2024-03-28T13:38:57Zhttps://rei.iteso.mx/oai/requestoai:rei.iteso.mx:11117/40622020-02-12T07:13:03Zcom_11117_560col_11117_561
Enhancement and Edge-Preserving Denoising: An OpenCL-Based Approach for Remote Sensing Imagery
Ortegón-Aguilar, Jaime
Castillo-Atoche, Alejandro
Carrasco-Álvarez, Roberto
Vázquez-Castillo, Javier
Villalón-Turrubiates, Iván E.
Pérez-Martínez, Omar
Image enhancement
Image Processing
Parallel Processing
Remote Sensing
Unmanned Aerial Vehicles
Image enhancement and edge-preserving denoising are relevant steps before classification or other postprocessing techniques for remote sensing images. However, multisensor array systems are able to simultaneously capture several low-resolution images from the same area on different wavelengths, forming a high spatial/spectral resolution image and raising a series of new challenges. In this paper, an open computing language based parallel implementation approach is presented for near real-time enhancement based on Bayesian maximum entropy (BME), as well as an edge-preserving denoising algorithm for remote sensing imagery, which uses the local linear Stein’s unbiased risk estimate (LLSURE). BME was selected for its results on synthetic aperture radar image enhancement, whereas LLSURE has shown better noise removal properties than other commonly used methods. Within this context, image processing methods are algorithmically adapted via parallel computing techniques and efficiently implemented using CPUs and commodity graphics processing units (GPUs). Experimental results demonstrate the reduction of computational load of real-world image processing for near real-time GPU adapted implementation.
2016-12-06T17:37:20Z
2016-12-06T17:37:20Z
2016-11
info:eu-repo/semantics/article
J. O. Aguilar; A. C. Atoche; R. C. Álvarez; J. V. Castillo; I. Villalón–Turrubiates; O. Pérez-Martínez, "Enhancement and Edge-Preserving Denoising: An OpenCL-Based Approach for Remote Sensing Imagery," in IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing , vol. 9, no. 12, pp.1-11, 2016.
1939-1404
http://hdl.handle.net/11117/4062
eng
IEEE Journal of Selected Topics in Applied Earth Observation and Remote Sensing (J-STARS): Special Issue on Remote Sensing in Latin America;99
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/64542021-09-06T15:51:29Zcom_11117_560col_11117_561
An Objective Function Formulation for Circuit Parameter Extraction Based on the Kullback-Leibler Distance
Loera-Díaz, Roberto
Rayas-Sánchez, José E.
Chebyshev
Entropy
Euclidean
Kullback-Leibler
Parameter Extraction
l-th norm
Shannon Information Theory
Optimization
Numerical circuit parameter extraction is widely used for modeling many kinds of high-frequency structures. In particular, parameter extraction can be used to find the optimal parameter values of an equivalent circuit model to match as close as possible a given target response. This paper presents a novel objective function formulation for parameter extraction based on the Kullback-Leibler distance. A rigorous graphical and numerical comparison of the proposed new formulation against classical l-th norm formulations is included. One- and two-dimensional synthetic examples are used to illustrate the advantages of the proposed Kullback-Leibler distance formulation. Our results indicate that the proposed new formulation yields similar or better-behaved parameter extraction objective functions than those obtained from l-th norm formulations.
2021-01-08T18:48:42Z
2021-01-08T18:48:42Z
2020-06
info:eu-repo/semantics/article
R. Loera-Díaz and J. E. Rayas-Sánchez, An objective function formulation for circuit parameter extraction based on the Kullback-Leibler distance, in IEEE MTT-S Int. Microwave Symp. Dig., Los Angeles, CA, Jun. 2020, pp. 80-82. (ISSN: 0149-645X; ISSN-e: 2576-7216; ISBN: 978-1-7281-6816-6; e-ISBN: 978-1-7281-6815-9; DOI: 10.1109/IMS30576.2020.9224002
0149-645X
https://hdl.handle.net/11117/6454
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/6232020-02-12T07:06:20Zcom_11117_560col_11117_561
Neural space mapping optimization for EM-based design
Bakr, Mohamed H.
Bandler, John W.
Ismail, Mostafa A.
Rayas-Sánchez, José E.
Zhang, Qi J.
Design Automation
Electromagnetic Based Optimization
Microwave Circuits
Microstrip Filters
Neural Network Applications
Neural Modeling
Optimization Methods
Space Mapping
Neural Space Mapping (NSM)
We propose, for the first time, neural space-mapping (NSM) optimization for electromagnetic-based design. NSM optimization exploits our space-mapping (SM)-based neuromodeling techniques to efficiently approximate the mapping. A novel procedure that does not require troublesome parameter extraction to predict the next point is proposed. The initial mapping is established by performing upfront fine-model analyses at a reduced number of base points. Coarse-model sensitivities are exploited to select those base points. Huber optimization is used to train, without testing points, simple SM-based neuromodels at each NSM iteration. The technique is illustrated by a high-temperature superconducting quarter-wave parallel coupled-line microstrip filter and a bandstop microstrip filter with quarter-wave resonant open stubs.
2013-05-21T20:29:46Z
2013-05-21T20:29:46Z
2000-12
info:eu-repo/semantics/article
M.H. Bakr, J.W. Bandler, M.A. Ismail, J.E. Rayas-Sánchez and Q.J. Zhang, “Neural space mapping optimization for EM-based design,” IEEE Trans. Microwave Theory Tech., vol. 48, pp. 2307-2315, Dec. 2000.
0018-9480
http://hdl.handle.net/11117/623
eng
Trans. Microwave Theory Tech.;48
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE Trans. Microwave Theory Tech.;48
oai:rei.iteso.mx:11117/32432020-02-12T06:51:42Zcom_11117_560col_11117_561
Dynamical Characterization of Land-Use Classification using Multispectral Remote Sensing Data for Guadalajara Region
Villalón-Turrubiates, Iván E.
Image Classification
Remote Sensing
Multispectral Data
Dynamical Analysis
An intelligent post-processing computational paradigm based on the use of dynamical filtering techniques modified to enhance the quality of reconstruction of remote sensing signatures based on SPOT-5 imagery is proposed. As a matter of particular study, a robust algorithm is reported for the analysis of the dynamic behavior of geophysical indexes extracted from remotely sensed scenes. Simulations are reported to probe the efficiency of the proposed technique.
2016-04-05T19:26:30Z
2016-04-05T19:26:30Z
2014-07
info:eu-repo/semantics/conferencePaper
I.E. Villalón-Turrubiates (2014). “Dynamical Characterization of Land-Use Classification using Multispectral Remote Sensing Data for Guadalajara Region”. Proceedings of the 2014 IEEE International Geoscience and Remote Sensing Symposium (IGARSS): Energy and our Changing Planet, Québec, Canadá, 2014, pp.145-148.
978-1-4799-5775-0
http://hdl.handle.net/11117/3243
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/54062020-02-12T07:13:52Zcom_11117_560col_11117_561
Semantic Invoice Processing
Escobar-Vega, Luis M.
Zaldívar-Carrillo, Víctor H.
Villalón-Turrubiates, Iván E.
organizational knowledge
knowledge management
semantic technology
semantic web
information extraction
ontology modelling
This work highlights how to transform information from invoice documents to semantic models, as an implementation of ontology modeling. The migration from printed paper to digital documents in the Mexican Government Offices in the last few years has brought significant opportunities for the usage of information technologies and applications. However, when changing digital document information into knowledge, there are still many gaps to be filled. This work proposes a solution to some issues regarding ontology modeling, specifically when mapping a document that follows some XML schema to an ontology under the OWL standard. The main contribution of this work is to provide new interpretations of the XML terms in the context of OWL, so that the XML Schema Definition (XSD) structures can be mapped into more complex OWL structures. A software tool developed to test and validate the information extraction strategies proposed is presented here.
2018-06-13T16:03:07Z
2018-06-13T16:03:07Z
2018-05
info:eu-repo/semantics/article
Escobar-Vega, L.M., Zaldívar-Carrilo, V.H. & Villalón-Turrubiates, I.E. (2018). Semantic Invoice Processing, Journal of Intelligent & Fuzzy Systems, vol. 34, no. 5, pp. 2913-2922, 2018. The final publication is available at IOS Press through http://dx.doi.org/10.3233/JIFS-169477
1064-1246
http://hdl.handle.net/11117/5406
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
IOS Press
oai:rei.iteso.mx:11117/5962020-02-12T06:51:50Zcom_11117_560col_11117_561
EM-based statistical analysis and yield estimation using linear-input and neural-output space mapping
Rayas-Sánchez, José E.
Gutiérrez-Ayala, Vladimir
Neural Space Mapping (NSM)
Electromagnetic Based Design
Broyden-Based Linear Input Mapping
Electromagnetic Based Yield Prediction
We propose a method for highly accurate
electromagnetics-based statistical analysis and yield calculations
around a space mapped nominal solution for RF and microwave
circuits. Our method consists of applying a constrained
Broyden-based linear input mapping approach to design,
followed by an output neural mapping modeling process in which
not only the responses but the design parameters and
independent variable are used as inputs to the output neural
network. We illustrate the accuracy of our technique using a
classical synthetic problem.
2013-05-21T17:03:31Z
2013-05-21T17:03:31Z
2006-06
info:eu-repo/semantics/conferencePaper
J. E. Rayas-Sánchez and V. Gutiérrez-Ayala, “EM-based statistical analysis and yield estimation using linear-input and neural-output space mapping,” in IEEE MTT-S Int. Microwave Symp. Dig., San Francisco, CA, Jun. 2006, pp. 1597-1600. (ISSN: 0149-645X; E-ISBN: 0-7803-7542-5; P-ISBN: 0-7803-9541-7; INSPEC: 9098190; DOI: 10.1109/MWSYM.2006.249641)
http://hdl.handle.net/11117/596
eng
IEEE MTT-S International Microwave Symposium;2006
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE MTT-S International Microwave Symposium
oai:rei.iteso.mx:11117/32302020-02-12T06:45:25Zcom_11117_560col_11117_561
Las redes de Petri en la paralelización eficiente de aplicaciones: caso de uso
Alcaraz-Mejía, Mildreth
Campos-Rodríguez, Raúl
Acosta-Lúa, Cuauhtémoc
Carranza-Sahagún, Diego U.
Cómputo Paralelo
Redes de Petri
Programación
En este trabajo se presenta el método basado en modelos de Redes de Petri para el análisis y paralelización eficiente de aplicaciones programadas con un paradigma secuencial. Primeramente, se realiza el modelo de la aplicación secuencial. Enseguida, se analizan las partes paralelizables, y se presenta un modelo en Red de Petri de la aplicación paralelizada. A partir del modelo en Red de Petri, se realiza la verificación de la construcción del modelo y se analiza de manera informal la relación de los P-Invariantes con la paralelización del modelo. Finalmente, se realiza una comparación del tiempo de cómputo entre el paradigma secuencial y el paralelo. Se utiliza la multiplicación de matrices como caso de estudio y se reportan los resultados experimentales.
2016-04-04T18:10:31Z
2016-04-04T18:10:31Z
2010-10
info:eu-repo/semantics/conferencePaper
M. Alcaraz-Mejía, R. Campos-Rodríguez, C. Acosta-Lúa, D. Carranza-Sahagún (2010). Las redes de Petri en la paralelización eficiente de aplicaciones: caso de uso. En VI Semana Nacional de Ingeniería Electrónica. Memorias en Extenso, v.1, pp.629-636.
978-607-477-363-7
http://hdl.handle.net/11117/3230
spa
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Universidad Autónoma Metropolitana / Universidad Autónoma de Nayarit
oai:rei.iteso.mx:11117/14132020-02-12T06:55:03Zcom_11117_560col_11117_561
Software implementation of space mapping based neuromodels of microwave components
Bandler, John W.
Rayas-Sánchez, José E.
Zhang, Qi J.
CAD
Microwave Modeling
Surrogate Modeling
Space Mapping
Software
Neuromodeler
We present novel realizations of SM based neuromodels of microwave components using available software. In the SM based neuromodeling techniques a neural network is used to implement a mapping from the electromagnetic to the circuit-theoretic input space. The implicit knowledge in the circuit model allows us to decrease not only the number of learning points needed, but also the complexity of the neural network and to improve the generalization performance. A Frequency Space Mapped Neuromodel (FSMN) of a microstrip right angle bend is implemented using NeuroModeler, and entered into ADS as a library component through an ADS plug-in module.
2014-08-26T18:25:50Z
2014-08-26T18:25:50Z
2000-04
info:eu-repo/semantics/conferencePaper
Bandler, J.W; Rayas-Sánchez, J.E. and Zhang, Q.J. (2000) “Software implementation of space mapping based neuromodels of microwave components,” in Micronet Annual Workshop, Ottawa, ON, Apr., pp. 67-68.
http://hdl.handle.net/11117/1413
eng
Micronet Annual Workshop;
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
Micronet Annual Workshop
oai:rei.iteso.mx:11117/5812020-02-12T06:49:33Zcom_11117_560col_11117_561
Yield-driven em optimization using space mapping-based neuromodels
Rayas-Sánchez, José E.
Bandler, John W.
Zhang, Qi J.
Electromagnetic Based Design
Microwave Circuits
Space Mapping
Electromagnetic Based Optimization
In this work, an efficient procedure to realize electromagnetics-based yield optimization and statistical analysis of microwave structures using space mapping-based neuromodels is proposed.
A generalized relationship between the fine and coarse model sensitivities through the Jacobian of the neuromapping is proposed. Our technique is illustrated by the EM-based statistical analysis
and yield optimization of an HTS microstrip filter.
2013-05-20T19:38:02Z
2013-05-20T19:38:02Z
2001-09
info:eu-repo/semantics/conferencePaper
J. W. Bandler, J. E. Rayas-Sánchez and Q.J. Zhang, “Yield-driven EM optimization using space mapping-based neuromodels,” in 31st European Microwave Conf., vol. 2, London, England, Sep. 2001, pp. 117-120. (10.1109/EUMA.2001.338979)
http://hdl.handle.net/11117/581
eng
European Microwave Conference;31st
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
31st European Microwave Conference
oai:rei.iteso.mx:11117/5922020-02-12T06:53:08Zcom_11117_560col_11117_561
EM-based space mapping optimization of left-handed coplanar waveguide filters with split ring resonators
Roglá, Luis J.
Rayas-Sánchez, José E.
Boria, V. E.
Carbonell, J.
Filter Design
Split Ring Resonator
Space Mapping
Surrogate Modeling
Coplanar Waveguide
For the first time, an automated design procedure
based on space mapping techniques is developed for the EMbased
optimization of left-handed coplanar waveguide (CPW)
filters based on split ring resonators (SRRs). Our design procedure
is based on a constrained Broyden-based input multistage
space mapping strategy, using a statistical approach to
parameter extraction (PE). Pre-conditioning of the coarse model
design parameters is used at each PE iteration, imposed by
the severely bounded region of validity of the equivalent circuit
model. The space mapping algorithm effectively aligns equivalent
circuit responses with simulated results provided by full-wave
electromagnetic simulation tools. Our method is illustrated by
the EM-based design of a CPW bandpass filter with 3 SRRs.
2013-05-21T17:03:09Z
2013-05-21T17:03:09Z
2007-06
info:eu-repo/semantics/conferencePaper
L. J. Roglá, J. E. Rayas-Sánchez, V. E. Boria and J. Carbonell, “EM-based space mapping optimization of left-handed coplanar waveguide filters with split ring resonators,” in IEEE MTT-S Int. Microwave Symp. Dig., Honolulu, HI, Jun. 2007, pp. 111-114. (ISSN: 0149-645X; E-ISBN: 1-4244-0688-9; P-ISBN: 1-4244-0688-9; INSPEC: 9727520; DOI: 10.1109/MWSYM.2007.380267)
http://hdl.handle.net/11117/592
eng
IEEE MTT-S International Microwave Symposium;2007
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE MTT-S International Microwave Symposium
oai:rei.iteso.mx:11117/5982020-02-12T06:53:08Zcom_11117_560col_11117_561
EM-based parametric optimization of a transition from microstrip to substrate integrated waveguide interconnect
Rayas-Sánchez, José E.
Gutiérrez-Ayala, Vladimir
SIW
Hardened Interconnects
Electromagnetic Based Optimization
Parametric Optimization
Microstrip-to-SIW Transitions
Substrate Integrated Waveguide (SIW)
An electromagnetics (EM)-based parametric
optimization of a microstrip to substrate integrated waveguide
(SIW) transition is described in this work. We study the
waveguide length effects over the reflection coefficient in order to
find a suitable SIW surrogate model. We perform a parametric
optimization of this surrogate model. Finally, we simulate the
original full-length SIW interconnect with microstrip transitions
at the optimal surrogate model solution, confirming a significant
improvement not only in the reflections but also in the
transmission. Both the SIW interconnect and its surrogate model
are simulated using a commercially available full-wave EM
simulator.
2013-05-21T17:56:51Z
2013-05-21T17:56:51Z
2008-02
info:eu-repo/semantics/conferencePaper
J. E. Rayas-Sánchez and V. Gutiérrez-Ayala, “EM-based parametric optimization of a transition from microstrip to substrate integrated waveguide interconnect,” in 9th IEEE Latin-American Test Workshop (LATW 2008), Puebla, Mexico, Feb. 2008, pp. 145-150.
http://hdl.handle.net/11117/598
eng
9th IEEE Latin-American Test Workshop (LATW);2008
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
9th IEEE Latin-American Test Workshop
oai:rei.iteso.mx:11117/14122020-02-12T06:55:00Zcom_11117_560col_11117_561
A generalized space mapping tableau approach to device modeling
Bandler, John W.
Ismail, Mostafa A.
Georgieva, Natalia
Rayas-Sánchez, José E.
Zhang, Qi J.
CAD
Artificial Neural Networks (ANN)
RF
Space Mapping
Neuromodeling
Microwave Modeling
A novel, comprehensive framework to engineering device modeling called Generalized Space Mapping (GSM) is introduced. The accuracy of available empirical models of microwave devices can be significantly enchanced by exploiting GSM. The new concept is verified on several device modeling problems, typically utilizing very few full-wave EM simulations, yielding remarkable improvement in accuracy.
2014-08-26T18:16:58Z
2014-08-26T18:16:58Z
1999-10
info:eu-repo/semantics/conferencePaper
Bandler, J.W; Georgieva, N; Ismail, M.A; Rayas-Sánchez, J.E. and Zhang, Q.J. (1999) “A generalized space mapping tableau approach to device modeling,” in 29th European Microwave Conf., Munich, Germany, Oct., vol. 3, pp. 231-234. (DOI: 10.1109/EUMA.1999.338480)
DOI: 10.1109
http://hdl.handle.net/11117/1412
eng
European Microwave Conf.;29th
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
European Microwave Conf.
oai:rei.iteso.mx:11117/5712020-02-12T07:06:07Zcom_11117_560col_11117_561
Tuning-aided implicit space mapping
Cheng, Qingsha S.
Bandler, John W.
Rayas-Sánchez, José E.
Space Mapping
Circuit Simulator
Tuning
Microstrip Notch Filter
Electromagnetic Simulator
We demonstrate an implicit space mapping (ISM) method for microwave filter design that is enhanced and assisted by a tuning procedure. This procedure helps us to select design variables as well as suitable preassigned parameters for an ISM implementation. It also aids us in the convergence of our ISM algorithm. We investigated and solved a microstrip notch filter using this technique. This shows that tuning-aided sensitivity analysis guides the parameter selections and enhances the performance of ISM optimization.
2013-05-20T18:49:42Z
2013-05-20T18:49:42Z
2008-09
info:eu-repo/semantics/article
Q.S. Cheng, J.W. Bandler and J.E. Rayas-Sánchez, “Tuning-aided implicit space mapping,” Int. J. RF and Microwave CAE, vol. 18, pp. 445-453, Sep. 2008.
1096-4290
http://hdl.handle.net/11117/571
eng
Int. J. RF and Microwave CAE;18
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
Int. J. RF and Microwave CAE
oai:rei.iteso.mx:11117/5702020-02-12T07:06:06Zcom_11117_560col_11117_561
Neural input space mapping optimization based on nonlinear two-layer perceptrons with optimized nonlinearity
Gutiérrez-Ayala, Vladimir
Rayas-Sánchez, José E.
Computer Aided Design (CAD)
Circuit Design
Electromagnetic Based Optimization
Three-Layer Perceptron
Two-Layer Perceptron
Microstrip Filters
Surrogate Modeling
Neural Space Mapping (NSM)
Artificial Neural Networks (ANN)
A neural space mapping optimization algorithm based on nonlinear two layer perceptrons (2LP) is described in this article. This work is an improved version of the Neural Space-Mapping (NSM) algorithm that uses three layer perceptrons (3LP) to implement a nonlinear input mapping function at each iteration. The new version uses a nonlinear 2LP whose nonlinearity is automatically regulated with classical optimization algorithms. Additionally, the new algorithm uses a different optimization method to train the SM-based neuromodel and a more efficient manner to predict the next iterate. With these improvements, we obtain a more efficient and faster algorithm. To verify the algorithm performance, we design some synthetic circuits, as well as a stopband microstrip filter with quarter-wave resonant opens stubs, a bandpass microstrip filter, and a microstrip notch filter with mitered bends. The last three cases use commercially available full-wave electromagnetic simulators. A rigorous comparison is made with the original NSM algorithm, showing the performance improvement achieved by our proposed new formulation.
2013-05-20T18:48:26Z
2013-05-20T18:48:26Z
2010-09
info:eu-repo/semantics/article
V. Gutiérrez-Ayala and J.E. Rayas-Sánchez, “Neural input space mapping optimization based on nonlinear two-layer perceptrons with optimized nonlinearity,” Int. J. RF and Microwave CAE, vol. 20, pp. 512-526, Sep. 2010.
1096-4290
http://hdl.handle.net/11117/570
eng
Int. J. RF and Microwave CAE;20
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
Int. J. RF and Microwave CAE
oai:rei.iteso.mx:11117/21482020-02-12T07:02:08Zcom_11117_1299com_11117_560col_11117_1469col_11117_561
La vinculación universidad privada–empresa: el caso del Centro de Consultoría del PROGINNT / ITESO
Ortiz-Cantú, Sara J.
Pedroza-Zapata, Álvaro R.
Gestión de la Innovación y la Tecnología
Vinculación Universidad Empresa
ITESO Programa Interdireccional de Gestión de la Innovación y la Tecnología (PROGINNT)
ITESO Centro de Consultoría en Gestión de la Innovación y la Tecnología
En esta ponencia se construye un marco teórico, desde la perspectiva del Sistema Nacional de Innovación y los trabajos sobre la vinculación universidad-empresa presentados en los Seminarios ALTEC 2007 y 2009. Este marco sirve como contexto para presentar el caso del Centro de Consultoría en Gestión de la Innovación y Tecnología del Programa para la Gestión de la Innovación y la Tecnología del ITESO.
2015-06-23T18:09:42Z
2015-06-23T18:09:42Z
2010
info:eu-repo/semantics/conferencePaper
Ortiz-Cantú, S.J. y Pedroza-Zapata, A.R. (2010). La vinculación universidad privada–empresa: el caso del Centro de Consultoría del PROGINNT / ITESO. Congreso Internacional de Sistemas de Innovación para la Competitividad.
http://hdl.handle.net/11117/2148
spa
Congreso Internacional de Sistemas de Innovación para la Competitividad;Edición 2010
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
SINNCO
oai:rei.iteso.mx:11117/6212020-02-12T07:02:04Zcom_11117_560col_11117_561
Optimization of the stub-alternated and serpentine microstrip structures to minimize far-end crosstalk
Rayas-Sánchez, José E.
Becerra-Pérez, Daniel
Nelder-Mead
Sonnet
Python
Crosstalk Reduction
Genetic Algorithm
Stub-alternated Microstrip
Serpentine Microstrip
Crosstalk is a signal integrity effect that negatively
impacts high-speed digital designs, especially those with dense
routing. Several techniques have been proposed to reduce
crosstalk. One of them consists of using innovative microstrip
structures, such as the stub-alternated and the serpentine
structures, which are intended to reduce far-end crosstalk.
However, these structures also present a negative effect on return
loss and near-end crosstalk. In this paper, these two structures
are optimized for far-end crosstalk reduction while minimizing
their negative impact on reflections and near-end crosstalk. A
genetic algorithm complemented with the Nelder-Mead method
is employed for direct optimization, using highly accurate EM
simulations in Sonnet driven from Python.
2013-05-21T19:15:16Z
2013-05-21T19:15:16Z
2012-10
info:eu-repo/semantics/conferencePaper
D. Becerra-Pérez and J. E. Rayas-Sánchez, “Optimization of the stub-alternated and serpentine microstrip structures to minimize far-end crosstalk,” in IEEE Conf. Electrical Performance of Electronic Packaging and Systems (EPEPS 2012), Tempe, AZ, Oct. 2012, pp. 109-112. (E-ISBN: 978-1-4673-2537-0; P-ISBN: 978-1-4673-2539-4; INSPEC: 13308359, DOI: 10.1109/EPEPS.2012.6457854)
http://hdl.handle.net/11117/621
eng
IEEE Conf. Electrical Performance of Electronic Packaging and Systems;2012
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE Conf. Electrical Performance of Electronic Packaging and Systems
oai:rei.iteso.mx:11117/32452020-02-12T07:02:18Zcom_11117_560col_11117_561
Unifying the Experiment Design and Constrained Regularization Paradigms for Reconstructive Imaging with Remote Sensing Data
Shkvarko, Yuriy
Leyva-Montiel, José L.
Villalón-Turrubiates, Iván E.
Signal Processing
Image Reconstruction
Regularization
In this paper, the problem of estimating from a finite set of measurements of the radar remotely sensed complex data signals, the power spatial spectrum pattern (SSP) of the wavefield sources distributed in the environment is cast in the framework of Bayesian minimum risk (MR) paradigm unified with the experiment design (ED) regularization technique. The fused MR-ED regularization of the ill-posed nonlinear inverse problem of the SSP reconstruction is performed via incorporating into the MR estimation strategy the projection-regularization ED constraints. The simulation examples are incorporated to illustrate the efficiency of the proposed unified MR-ED technique.
2016-04-05T22:50:55Z
2016-04-05T22:50:55Z
2006
info:eu-repo/semantics/conferencePaper
Y. Shkvarko; J.L. Leyva-Montiel; I.E. Villalón-Turrubiates (2006). “Unifying the Experiment Design and Constrained Regularization Paradigms for Reconstructive Imaging with Remote Sensing Data”. Proceedings of the IEEE International Conference on Image Processing (ICIP), Atlanta, EEUU, pp.3241-3244.
1-4244-0480-0
http://hdl.handle.net/11117/3245
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/82482023-03-01T14:16:06Zcom_11117_560col_11117_561
EM‐driven tolerance optimization of compact microwave components using response feature surrogates
Pietrenko‐Dabrowska, Anna
Slawomir, Koziel
Bandler, John W.
Rayas-Sánchez, José E.
Fabrication Tolerances
Optimization
Statistical Analysis
Robust Design
Response Features
EM-driven design
Compact Components
Improving microwave component immunity to parameter deviations is of high importance, especially in the case of stringent performance specifications. This paper proposes a computationally efficient algorithm for robustness enhancement of compact microwave circuits. The objective is to increase the acceptable levels of geometry parameter deviations under which the prescribed performance specifications are still fulfilled. Our approach incorporates feature-based surrogate models utilized for low-cost prediction of the fabrication yield, as well as the trustregion framework for adaptive control of design relocation and ensuring convergence of the optimization process. The efficacy of our technique is demonstrated using a broadband microstrip filter.
2022-10-21T17:56:05Z
2022-10-21T17:56:05Z
2022-06-21
info:eu-repo/semantics/article
A. Pietrenko‐Dabrowska, S. Koziel, J. W. Bandler and J. E. Rayas-Sánchez, “EM‐driven tolerance optimization of compact microwave components using response feature surrogates,” in IEEE MTT-S Int. Microwave Symp. Dig., Denver CO, Jun. 2022, pp. 107-110.
978-1-6654-9614-8
0149-645X
https://hdl.handle.net/11117/8248
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/32472020-02-12T07:02:14Zcom_11117_560col_11117_561
Dynamical Processing of Geophysical Signatures based on SPOT-5 Remote Sensing Imagery
Villalón-Turrubiates, Iván E.
Dynamical Processing
Geophysycal Signatures
Spot-5
Remote Sensing Imagery
An intelligent post-processing computational paradigm based on the use of dynamical filtering techniques modified to enhance the quality of reconstruction of geophysical signatures based on Spot-5 imagery is proposed. As a matter of particular study, a robust algorithm is reported for the analysis of the dynamic behavior of geophysical indexes extracted from the real-world remotely sensed scenes. The simulation results verify the efficiency of the approach as required for decision support in resources management.
2016-04-05T23:09:07Z
2016-04-05T23:09:07Z
2010-07
info:eu-repo/semantics/conferencePaper
Iván E. Villalón-Turrubiates. “Dynamical Processing of Geophysical Signatures based on SPOT-5 Remote Sensing Imagery”. Proceedings of the 2010 IEEE International Geoscience and Remote Sensing Symposium (IGARSS): Global Vision for Local Action, Honolulú, Hawái, 2010, pp.2244-2247.
978-1-4244-9565-8
http://hdl.handle.net/11117/3247
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/5782020-02-12T06:49:09Zcom_11117_560col_11117_561
Space Mapping Technology with Applications in EM-based Device Modeling and Statistical Design
Rayas-Sánchez, José E.
Bandler, John W.
Ismail, Mostafa A.
Space Mapping Super Model (SMSM)
Frequency-Space Mapping Super Model (FSMSM)
Microwave Circuits
Electromagnetic Based Design
Space Mapping
The Space Mapping concept intelligently links companion “coarse” and “fine” engineering models of different complexities, e.g., fullwave
electromagnetic (EM) simulations and empirical circuit-theory based models.
A comprehensive framework to engineering device modeling which we call Generalized Space Mapping (GSM) has been developed. GSM
is a tableau-based approach. It permits many different practical implementations. As a result the accuracy of available empirical models of
microwave devices can be significantly enhanced in selected regions of interest in the parameter space. We present two fundamental
illustrations: a basic Space Mapping Super Model (SMSM) which maps designable device parameters and a Frequency-Space Mapping
Super Model (FSMSM) which also maps the frequency variable. The SMSM and FSMSM concepts have been verified on several
modeling problems, typically utilizing a few relevant full-wave EM simulations. We present several microstrip examples, yielding
remarkable modeling improvement.
We consider the GSM technique to be very easy to implement. It has been reported to be very useful in the RF industry for development
of new library models involving commercial software such as Agilent Momentum and ADS.
Accurate yield optimization and statistical analysis of microwave components are crucial for manufacturability-driven designs in a time-tomarket
development environment. Yield optimization requires intensive simulations to cover the entire statistic of possible outputs of a
given manufacturing process. An efficient procedure to realize EM-based yield optimization and statistical analysis of microwave
structures using space mapping based neuromodels will be presented. Several practical microwave components illustrate our technique using commercial EM simulators.
2013-05-20T19:37:45Z
2013-05-20T19:37:45Z
2001-05
info:eu-repo/semantics/conferencePaper
J. W. Bandler, M. A. Ismail and J. E. Rayas-Sánchez, “Space mapping technology with applications in EM-based device modeling and statistical design,” in IEEE MTT-S Int. Microwave Symp. Workshop Notes and Short Courses, Phoenix, AZ, May 2001.
http://hdl.handle.net/11117/578
eng
IEEE MTT-S International Microwave Symposium;2001
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE MTT-S International Microwave Symposium
oai:rei.iteso.mx:11117/29152021-02-24T01:12:48Zcom_11117_560col_11117_561
Wavelet Fisher’s Information Measure of 1=fα Signals
Ramírez-Pacheco, Julio
Torres-Román, Deni
Rizo-Domínguez, Luis
Trejo-Sánchez, Joel
Manzano-Pinzón, Franciso
Structural Breaks
Fisher Information
Fractal Index Estimation
Fractional Gaussian Noise
This article defines the concept of wavelet-based Fisher’s information measure (wavelet FIM) and develops a closed-form expression of this measure for 1/fα signals. Wavelet Fisher’s information measure characterizes the complexities associated to 1/fα signals and provides a powerful tool for their analysis. Theoretical and experimental studies demonstrate that this quantity is exponentially increasing for α > 1 (non-stationary signals) and almost constant for α < 1 (stationary signals). Potential applications of wavelet FIM are discussed in some detail and its power and robustness for the detection of structural breaks in the mean embedded in stationary fractional Gaussian noise signals studied.
2016-01-20T00:46:58Z
2016-01-20T00:46:58Z
2011-09
info:eu-repo/semantics/article
Ramírez-Pacheco, J.; Rizo-Domínguez, L., Torres-Román, D., Trejo Sánchez, J., Manzano-Pinzón, F. (2011). “Wavelet Fisher’s Information Measure of 1/fα signals”. Entropy Journal 13(9), pp 1648. Basel, Switzerland: MDPI
1099-4300
doi 10.3390/e13091648.
http://hdl.handle.net/11117/2915
eng
Entropy;13(9)
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
MDPI
oai:rei.iteso.mx:11117/13992020-02-12T06:54:39Zcom_11117_560col_11117_561
Space mapping based neuromodeling of high frequency circuits
Bandler, John W.
Rayas-Sánchez, José E.
Zhang, Qi J.
Artificial Neural Networks (ANN)
Neuromodeling
High-frequency Circuits Design
Space Mapping
Artificial Neural Networks (ANN) are very convenient in modeling high-dimensional and highly nonlinear components, as those found in the microwave and high frequency arena, due to their ability to learn and generalize from data, their non-linear processing nature, and their massively parallel structure.
In modeling high frequency components the learning data is usually obtained from a detailed or “fine” model (EM simulator or measurements). This is generally very time consuming because the simulation/measurements must be performed for many combinations of different values of input parameters. This is the main drawback of classical ANN modeling. Without sufficient learning samples, the neural models may not be reliable.
Several innovative strategies to develop neuromodels take advantage of empirical or “coarse” models already available (circuit-equivalent models and analytical formulas). Here we describe space mapping based neuromodeling of high frequency circuits.
2014-08-12T19:11:42Z
2014-08-12T19:11:42Z
1999-04
info:eu-repo/semantics/conferencePaper
Bandler. J.W,; Rayas-Sánchez, J.E. and Zhang, Q.J. (1999). “Space mapping based neuromodeling of high frequency circuits,” in Micronet Annual Workshop, Ottawa, ON, april, pp.122-123.
http://hdl.handle.net/11117/1399
eng
Micronet Annual Workshop;
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
Micronet Annual Workshop
oai:rei.iteso.mx:11117/6572020-02-12T07:06:38Zcom_11117_560col_11117_561
Direct comparison of recombination dynamics in cubic and hexagonal GaN-AlN quantum dots
Simon, Julia
Pelekanos, N.T.
Adelmann, Christoph
Martínez-Guerrero, Esteban
André, R.
Daudin, B.
Dang, Le Si
Mariette, H.
Wuirzite
Zincblende GaN
AlN Quatum Dots
Photoluminiscence
Carrier Lifetime
We report on time-integrated and -resolved photoluminescence (PL) data on self-assembled GaN quantum dots (QD's) embedded in AlN, in both cubic [zinc-blende (ZB)] and hexagonal [wurtzite (Wz)] crystallographic phases. The comparison of the optical properties of ZB and Wz nitride QD's allows us to distinguish pure dimensionality effects from the influence of the large polarization-induced electric fields present in the Wz nanostructures. Specifically, the PL energy of the ZB QD's is always higher than the bulk cubic GaN band-gap energy, in contrast to the Wz QD's where a 7-MV/cm polarization field gives rise to below-gap PL emission for sufficiently large QD's. As a further consequence of the internal field, the low-temperature PL decay times of the Wz QD's are significantly longer than the ZB ones, and increase strongly with the QD height in contrast to the ZB ones, which exhibit only a small size dependence. For both types of QD's, the PL intensity is found to be weakly dependent on temperature, underscoring the strong zero-dimensional exciton localization in the GaN/AlN system. In spite of the strong localization, however, we show that the nonradiative channels cannot be neglected and have a significant contribution in the PL decay time for both ZB and Wz QD's
2013-06-14T15:32:18Z
2013-06-14T15:32:18Z
2003-07-15
info:eu-repo/semantics/article
J. Simon, N. T. Pelekanos, C. Adelmann,E. Martinez-Guerrero, R. André, B. Daudin, Le Si Dang, and H. Mariette, Direct comparison of recombination dynamics in cubic and hexagonal GaN-AlN quantum dots, Phys. Rev. B 68, 035312 (1-7), (2003)
1098-0121
http://hdl.handle.net/11117/657
eng
Phys. Rev. B;No 68
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
American Physical Society
oai:rei.iteso.mx:11117/6162020-02-12T06:54:31Zcom_11117_560col_11117_561
A linear regression inverse space mapping algorithm for EM-based design optimization of microwave circuits
Rayas-Sánchez, José E.
Vargas-Chávez, Noel
Space Mapping
Electromagnetic Based Optimization
Stripline Transformer
Microstrip Filters
A new simplified formulation for inverse space mapping optimization of microwave circuits is presented in this work. In contrast to previous inverse space mapping algorithms, where artificial neural networks are trained to approximate the inverse space mapping at each iteration, our approach makes use of a linear regression formulation to calculate in closed form the
inverse mapping parameters at each iteration, making faster and
more robust the prediction of the next iterates. The inverse
mapping parameters are obtained by inverting a small matrix of
base points that is warranted to be full-rank. Direct input space
mapping by linear regression is also discussed. Our technique is
illustrated by the design optimization of a four-section 1:3
Butterworth stripline impedance transformer, and by a
microstrip notch filter with mitered bends.
2013-05-21T19:14:43Z
2013-05-21T19:14:43Z
2011-06
info:eu-repo/semantics/conferencePaper
J. E. Rayas-Sánchez and N. Vargas-Chávez, “A linear regression inverse space mapping algorithm for EM-based design optimization of microwave circuits,” in IEEE MTT-S Int. Microwave Symp. Dig., Baltimore, MD, Jun. 2011, pp. 1-4. (ISSN: 0149-645X; E-ISBN: 978-1-61284-756-6; P-ISBN: 978-1-61284-754-2; INSPEC: 12180836; DOI: 10.1109/MWSYM.2011.5972954)
http://hdl.handle.net/11117/616
eng
IEEE MTT-S International Microwave Symposium (IMS);2011
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE MTT-S International Microwave Symposium
oai:rei.iteso.mx:11117/78632022-03-15T03:01:07Zcom_11117_560col_11117_561
Optimizing a buck voltage regulator and the number of decoupling capacitors for a PDN application
Moreno-Mojica, Aurea E.
Rayas-Sánchez, José E.
Leal-Romo, Felipe J.
Impedance Profile
Noise Control
Power Delivery Network
Power Integrity
Voltage Droop
Voltage Regulator
An optimization methodology to determine the best values of the compensation elements of a buck voltage regulator (VR) as well as the optimal number of decoupling capacitors in a power delivery network (PDN) application is proposed. A state average equivalent circuit model of the buck converter is employed. The proposed optimization methodology gradually finds the best compensation parameter values of a buck converter VR to meet some stability criteria in a PDN application. Additionally, the number of parallel decoupling capacitors in the PDN is minimized to simultaneously meet a frequency-domain impedance profile specification and a time-domain voltage droop requirement.
2022-03-14T23:02:28Z
2022-03-14T23:02:28Z
2021-05
info:eu-repo/semantics/article
A.E. Moreno-Mojica, J.E. Rayas-Sánchez and F.J. Leal-Romo, “Optimizing a buck voltage regulator and the number of decoupling capacitors for a PDN application,” in IEEE MTT-S Latin America Microwave Conf. (LAMC-2021), Cali, Colombia, May 2021, pp. 1-4. DOI: 10.1109/LAMC50424.2021.9601574
978-1-7281-9359-5
https://hdl.handle.net/11117/7863
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/5822020-02-12T07:06:11Zcom_11117_560col_11117_561
EM-based Monte Carlo analysis and yield prediction of microwave circuits using linear-input neural-output space mapping
Rayas-Sánchez, José E.
Gutiérrez-Ayala, Vladimir
Microstrip Filters
Monte Carlo Analysis
Neural Modeling
Space Mapping
Statistical Analysis
Surrogate Models
Computer Aided Design (CAD)
Electromagnetic Based Design
Electromagnetic Based Yield Prediction
A computationally efficient method for highly accurate electromagnetics-based statistical analysis and yield estimation of RF and microwave circuits is described in this paper. The statistical analysis is realized around a space-mapped nominal solution. Our method consists of applying a constrained Broyden-based linear input space-mapping approach to design, followed by an output neural space-mapping modeling process in which not only the responses, but the design parameters and independent variable are used as inputs to the output neural network. The output neural network is trained using reduced sets of training and testing data generated around the space-mapped nominal solution. We illustrate the accuracy and efficiency of our technique through the design and statistical analysis of a classical synthetic problem and a microstrip notch filter with mitered bends.
2013-05-20T21:37:18Z
2013-05-20T21:37:18Z
2006-12
info:eu-repo/semantics/article
J.E. Rayas-Sánchez and V. Gutiérrez-Ayala, “EM-based Monte Carlo analysis and yield prediction of microwave circuits using linear-input neural-output space mapping,” IEEE Trans. Microwave Theory Tech., vol. 54, pp. 4528-4537, Dec. 2006.
0018-9480
http://hdl.handle.net/11117/582
eng
IEEE Trans. Microwave Theory Tech.;54
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE Trans. Microwave Theory Tech.;54
oai:rei.iteso.mx:11117/44762020-02-12T06:45:38Zcom_11117_560col_11117_561
Research activities on computer-aided modeling, design and optimization of RF and microwave circuits at ITESO Mexico
Rayas-Sánchez, José E.
Brito-Brito, Zabdiel
EM-based design optimization
Microwaves in Latin America
Space Mapping
Surrogate-Based Optimization
Artificial Neural Networks
ITESO (Instituto Tecnológico y de Estudios Superiores de Occidente) is a private Jesuit university in Guadalajara, Jalisco, Mexico. The Department of Electronics, Systems and Informatics at ITESO is the host of the Research Group on Computer-Aided Engineering of Circuits and Systems (CAECAS), which focuses on state-of-the-art CAD techniques for high-frequency electronics design. In this paper, we describe our general research capabilities in this field, and our educational programs related to RF and microwave circuits. We briefly review selected research contributions in the area of computer-aided modeling, design and optimization of RF and microwave circuits exploiting space mapping (SM), artificial neural networks (ANN), and surrogate-based optimization (SBO). We illustrate one of our methodologies by a design optimization example using a microwave filter.
2017-05-10T17:12:06Z
2014-06
info:eu-repo/semantics/conferencePaper
J. E. Rayas-Sánchez and Z. Brito-Brito, “Research activities on computer-aided modeling, design and optimization of RF and microwave circuits at ITESO Mexico” in IEEE MTT-S Int. Microwave Symp. Dig., Tampa, FL, Jun. 2014, pp. 1-3. (ISBN: 978-1-4799-3868-1, INSPEC: 14432494, DOI: 10.1109/MWSYM.2014.6848342).
978-1-4799-3868-1
DOI: 10.1109/MWSYM.2014.6848342
http://hdl.handle.net/11117/4476
eng
IEEE MTT-S International Microwave Symposium Digest;
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
IEEE MTT-S International Microwave Symposium Digest
oai:rei.iteso.mx:11117/60142020-02-12T06:47:56Zcom_11117_560col_11117_561
A Novel High-Performance Length Matching Element for High-Speed Interconnect Differential Channels
Sánchez-Mesa, Rosa J.
Cortés-Hernández, Diego M.
Gálvez-Sahagún, Benjamín
Rayas-Sánchez, José E.
Brito-Brito, Zabdiel
ADS
Differential Interconnects
Full-wave EM Simulation
High-speed
HFSS
Length Matching Element
Mode Conversion
PCB
S-parameters
TDR
Length matching elements (LME) are used for intra-pair length matching and inter-pair skew reduction to get high data rates in high-speed differential channels. Although these structures are widely used in printed circuit boards (PCB), the effectiveness of the structure depends on its geometry and dimensions, allowing different design alternatives. In this work, a novel LME for PCB designs is proposed. It is formed by three sub-structures, such that the insertion and impedance profile can be parametrically controlled by the geometry of the proposed LME without affecting the length matching. Mixed-mode parameters, extracted from simulation data, shows that the proposed LME presents lower insertion loss and less electromagnetic interference (EMI), than trapezoidal LME. In addition, time domain reflected analysis (TDR) shows better impedance profile for the proposed LME than for the trapezoidal shape. Both frequency- and time-domain results indicate that the proposed LME can be a good alternative for length matching compensation in high-speed channels.
2019-08-30T20:16:38Z
2019-08-30T20:16:38Z
2018-12
info:eu-repo/semantics/article
R.J. Sánchez-Mesa, D.M. Cortés-Hernández, B. Gálvez-Sahagún, J.E. Rayas-Sánchez, and Z. Brito-Brito, “A novel high-performance length matching element for high-speed interconnect differential channels,” in IEEE MTT-S Latin America Microwave Conf. (LAMC-2018), Arequipa, Peru, Dec. 2018, pp. 1-3. DOI: 10.1109/LAMC.2018.8699027
978-1-5386-7334-8
http://hdl.handle.net/11117/6014
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/59512020-02-12T06:47:43Zcom_11117_560col_11117_561
Academic and Industrial Research Activities on RF and Microwaves in Latin America: An Overview
Rayas-Sánchez, José E.
Brito-Brito, Zabdiel
Latin America
RF and Microwave Modeling
Academic Research
Industrial Research
In this paper, we present a comprehensive general view of the main academic and industrial research activities in the areas of RF and microwaves in Latin America. We provide a geographical perspective of the overall distribution of the main research and development clusters on RF and microwaves in this region. We make a summary of RF and microwave academic research in the following countries: Argentina, Brazil, Chile, Colombia, Costa Rica, Ecuador, Mexico, Nicaragua, Peru, Puerto Rico and Venezuela. Industrial research and development in RF and microwaves in Latin America is also briefly reviewed. We finalize by highlighting international research-funding programs currently available to support collaborations between Latin American institutions and those from other regions of the world, particularly with European countries.
2019-07-23T18:30:25Z
2019-07-23T18:30:25Z
2017-10
info:eu-repo/semantics/article
J. E. Rayas-Sánchez and Z. Brito-Brito, “Academic and industrial research activities on RF and microwaves in Latin America: an overview,” in European Microwave Conf. (EuMC-2017), Nuremberg, Germany, Oct. 2017, pp. 536-539.
978-1-5386-3964-1
http://hdl.handle.net/11117/5951
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
EuMA
oai:rei.iteso.mx:11117/32422020-02-12T07:02:17Zcom_11117_560col_11117_561
Dynamical Enhancement of the Large Scale Remote Sensing Imagery for Decision Support in Environmental Resource Management
Shkvarko, Yuriy
Villalón-Turrubiates, Iván E.
Environmental Remote Sensing
Dynamic Filtration
Resource Management
Decision Support
Regularization
In this study, we address a new efficient robust optimization approach to large-scale environmental RSSS reconstruction/enhancement as required for remote sensing imaging with multi-spectral array sensors/SAR. First, the problem- oriented robustification of the previously proposed fused Bayesian-regularization (FBR) enhanced imaging method is performed to alleviate its ill-poseness due to system-level and model-level uncertainties. Second, we incorporate the dynamic filtration paradigm into the overall reconstruction technique to enhance the quality of the imagery as it is required for decision support in environmental resource management with dynamic RSSS behavior.
2016-04-05T19:10:35Z
2016-04-05T19:10:35Z
2007
info:eu-repo/semantics/conferencePaper
Y. Shkvarko e I.E. Villalón-Turrubiates (2007). “Dynamical Enhancement of the Large Scale Remote Sensing Imagery for Decision Support in Environmental Resource Management”, en Proceedings of the 18th International Conference of the Information Resources Management Association: Managing Worldwide Operations and Communications with Information Technology, Vancouver Canadá, 2007, pp.1335-1337.
978-1-59904-929-8
http://hdl.handle.net/11117/3242
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Information Resources Management Association
oai:rei.iteso.mx:11117/60082020-02-12T06:47:39Zcom_11117_560col_11117_561
A Historical Account and Technical Reassessment of the Broyden-based Input Space Mapping Optimization Algorithm
Rayas-Sánchez, José E.
Aggressive Space Mapping
Broyden
Em-based Design
Non-linear Systems
Optimization
The Broyden-based input space mapping (SM) algorithm, better known as the aggressive space mapping (ASM) algorithm, is revisited in this article. The most fundamental SM-based optimization methods developed until now, in which ASM is framed, are overviewed. More than two decades of ASM evolution are briefly accounted, evidencing its popularity in both academia and industry. The two main characteristics that explain its popularity are emphasized: 1) simplicity, and 2) efficiency (when it works, it works extremely well). The fundamentals behind the Broyden-based input SM algorithm are illustrated, accentuating key steps for its successful implementation, as well as typical scenarios where it may fail. Finally, some future directions regarding ASM are ventured.
2019-08-30T18:44:12Z
2019-08-30T18:44:12Z
2017-06
info:eu-repo/semantics/article
J. E. Rayas-Sánchez, “A historical account and technical reassessment of the Broyden-based input space mapping optimization algorithm,” in IEEE MTT-S Int. Microwave Symp. Dig., Honolulu, HI, Jun. 2017, pp. 1495-1497. DOI: 10.1109/MWSYM.2017.8058906
0149-645X
http://hdl.handle.net/11117/6008
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/44782020-02-12T06:45:51Zcom_11117_560col_11117_561
Enhanced formulation for polynomial-based surrogate modeling of microwave structures in frequency domain
Brito-Brito, Zabdiel
Rayas-Sánchez, José E.
Chávez-Hurtado, José L.
Surrogate Modeling
Polynomial Functionals
EM-based Models
Space Mapping
High-speed Interconnects
Substrate Integrated Waveguides
Microstrip-SIW Transitions
Practical formulations for EM-based modeling of microwave structures using simple polynomial surrogate functionals are described in this paper. A new polynomial surrogate formulation is proposed and compared against a previously published formulation. Both formulations calculate the surrogate model weighting factors in closed form, yielding global optimal values in the least squares sense. These formulations are suitable for EM-based design problems with no equivalent circuital models available. Our new formulation exhibits smaller learning errors and better generalization performance than the original formulation. Both methodologies are illustrated by the EM-based modeling a SIW interconnect with microstrip transitions on a standard FR4-based substrate implemented in a 3D full-wave FEM simulator.
2017-05-10T18:15:47Z
2015-08
info:eu-repo/semantics/conferencePaper
J. E. Rayas-Sánchez, J. L. Chávez-Hurtado, and Z. Brito-Brito, “Enhanced formulation for polynomial-based surrogate modeling of microwave structures in frequency domain,” in IEEE MTT-S Int. Conf. Num. EM Mutiphysics Modeling Opt. RF, Microw., Terahertz App. (NEMO-2015), Ottawa, Canada, Aug. 2015, pp. 1-3. (DOI: 10.1109/NEMO.2015.7415094).
DOI: 10.1109/NEMO.2015.7415094
http://hdl.handle.net/11117/4478
eng
IEEE MTT-S Int. Conf. Num. EM Mutiphysics Modeling Opt. RF, Microw., Terahertz App. (NEMO-2015);
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
IEEE MTT-S Int. Conf. Num. EM Mutiphysics Modeling Opt. RF, Microw., Terahertz App.
oai:rei.iteso.mx:11117/60002020-02-12T06:48:05Zcom_11117_560col_11117_561
High-Speed Links Receiver Optimization in Post-Silicon Validation Exploiting Broyden-based Input Space Mapping
Rangel-Patiño, Francisco E.
Rayas-Sánchez, José E.
Viveros-Wacher, Andrés
Vega-Ochoa, Edgar A.
Hakim, Nagib
Aggressive Space Mapping
Broyden
DoE
Eye Diagram
Equalization
HSIO
Metamodels
SATA
SM
Surrogate-based Optimization
One of the major challenges in high-speed input/output (HSIO) links electrical validation is the physical layer (PHY) tuning process. Equalization techniques are employed to cancel any undesired effect. Typical industrial practices require massive lab measurements, making the equalization process very time consuming. In this paper, we exploit the Broyden-based input space mapping (SM) algorithm to efficiently optimize the PHY tuning receiver (Rx) equalizer settings for a SATA Gen 3 channel topology. We use a good-enough surrogate model as the coarse model, and an industrial post-silicon validation physical platform as the fine model. A map between the coarse and the fine model Rx equalizer settings is implicitly built, yielding an accelerated SM-based optimization of the PHY tuning process.
2019-08-29T20:32:09Z
2019-08-29T20:32:09Z
2018-08
info:eu-repo/semantics/article
F. E. Rangel-Patiño, J. E. Rayas-Sánchez, A. Viveros-Wacher, E. A. Vega-Ochoa and N. Hakim, "High-Speed Links Receiver Optimization in Post-Silicon Validation Exploiting Broyden-based Input Space Mapping," 2018 IEEE MTT-S International Conference on Numerical Electromagnetic and Multiphysics Modeling and Optimization (NEMO), Reykjavik, 2018, pp. 1-3. doi: 10.1109/NEMO.2018.8503099
978-1-5386-5205-3
http://hdl.handle.net/11117/6000
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/33052020-02-12T06:51:41Zcom_11117_560col_11117_561
A Novel Algorithm for Tridimensional Reconstruction using Data from Low-Cost Sensors
Barrera-Pelayo, Alicia
Villalón-Turrubiates, Iván E.
Image Processing
Optical Sensor
Array Signal Processing
Monitoring
A novel algorithm to generate a tridimensional reconstruction of an object using a series of images obtained with sensors within low-cost cameras is proposed. As a matter of particular study, this paper present the methodology employed to set an array of sensors to extract the necessary information from a particular group of acquired images surrounding the sample, the processing schema for its interpretation and its mapping, in order to approximate a tridimensional model with the use of real data. The simulation results can verify the efficiency of the proposed approach, showing an application where it could be a useful tool for decision support or resource management.
2016-04-21T18:34:39Z
2016-04-21T18:34:39Z
2015-07
info:eu-repo/semantics/conferencePaper
Ivan E. Villalon-Turrubiates y Alicia Barrera-Pelayo, “A Novel Algorithm for Tridimensional Reconstruction using Data from Low-Cost Sensors”, en Proceedings of the 2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS): Understanding the Earth for a Safer World, Milán Italia, 2015, pp. 3014-3017.
978-1-4799-7929-5
http://hdl.handle.net/11117/3305
eng
2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS): Understanding the Earth for a Safer World;
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Institute of Electrical and Electronics Engineers
oai:rei.iteso.mx:11117/32952020-02-12T07:02:14Zcom_11117_560col_11117_561
Multispectral Classification of Remote Sensing Imagery for Archaeological Land Use Analysis: Prospective Study
Villalón-Turrubiates, Iván E.
Llovera-Torres, María J.
Remote Sensing
Multispectral Data
Multispectral Image Classification
Weighted Pixel Statistics
Archaeological Land Use
Much of human history can be traced through the impacts of human actions upon the environment. The use of remote sensing technology offers the archeologist the opportunity to detect these impacts which are often invisible to the naked eye. The extraction of remote sensing signatures from a particular geographical region allows the generation of geophysical signature maps; this can be achieved using an accurate and recently developed multispectral image classification approach based on pixel statistics for the class description, which is referred to as the Weighted Pixel Statistics method. This paper presents the prospective study of the effectiveness that this approach provides for supervised segmentation and classification of sensed archaeological signatures for land use analysis. The results obtained with this study uses real multispectral scenes obtained with remote sensing techniques (high-resolution synthetic aperture radar) to probe the efficiency of the classification technique.
2016-04-21T15:26:02Z
2016-04-21T15:26:02Z
2010-07
info:eu-repo/semantics/conferencePaper
Iván E. Villalón-Turrubiates y María J. Llovera-Torres, “Multispectral Classification of Remote Sensing Imagery for Archaeological Land Use Analysis: Prospective Study”, in Proceedings of the 2010 IEEE International Geoscience and Remote Sensing Symposium (IGARSS): Global Vision for Local Action, Honolulu, Hawaii, 2010, pp. 323-326.
978-1-4244-9565-8
http://hdl.handle.net/11117/3295
eng
2010 IEEE International Geoscience and Remote Sensing Symposium (IGARSS): Global Vision for Local Action;
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Institute of Electrical and Electronics Engineers
oai:rei.iteso.mx:11117/5942020-02-12T06:51:37Zcom_11117_560col_11117_561
Automated Modeling and Neuro Space Mapping for Microwave Design
Rayas-Sánchez, José E.
Zhang, Qi J.
Zhang, Lei
Neural Space Mapping (NSM)
Automated Modeling Algorithms
• Introduction
• Automated modeling algorithms
• Neuro-Space mapping for passive modeling
• Neuro-Space mapping for active device modeling
2013-05-21T17:03:21Z
2013-05-21T17:03:21Z
2005-06
info:eu-repo/semantics/conferencePaper
Q. J. Zhang, L. Zhang and J. E. Rayas-Sánchez, “Automated modeling and neuro space mapping for microwave design,” in IEEE MTT-S Int. Microwave Symp. Workshop Notes and Short Courses, Long Beach, CA, Jun. 2005.
http://hdl.handle.net/11117/594
eng
IEEE MTT-S Int. Microwave Symp. Workshop Notes and Short Courses;2005
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE MTT-S Int. Microwave Symp. Workshop Notes and Short Courses
oai:rei.iteso.mx:11117/5842020-02-12T06:50:33Zcom_11117_560col_11117_561
Statistical Design of High Frequency Electronic Circuits Using Space Mapping-Based Neuromodels
Rayas-Sánchez, José E.
Bandler, John W.
Microwave Circuits
Electromagnetic Based Design
Full Wave Electromagnetic Simulations
Manufacturability-driven designs
in a time-to-market development industrial
environment demand accurate yield
optimization and statistical analysis of the
electronic components. Yield optimization
requires intensive simulations to cover the
entire statistic of possible outcomes of a given
manufacturing process. Full wave electromagnetic
simulations are usually needed to
accurately characterize high frequency
electronic circuits. Performing direct yield
optimization using accurate full wave
electromagnetic simulations for high frequency
circuits does not appear feasible. In
this paper, an efficient procedure to perform
electromagnetics-based yield optimization and
statistical analysis of high frequency
structures using space mapping-based neuromodels
is proposed. Our technique is illustrated
by the EM-based statistical analysis and
yield optimization of an HTS filter.
2013-05-21T15:23:13Z
2013-05-21T15:23:13Z
2002-04
info:eu-repo/semantics/conferencePaper
J. E. Rayas-Sánchez and J.W. Bandler, “Statistical design of high frequency electronic circuits using space mapping-based neuromodels,” in VIII International Workshop Iberchip (IWS 2002), Guadalajara, Mexico, Apr. 2002.
http://hdl.handle.net/11117/584
eng
VIII International Workshop Iberchip (IWS);2002
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
VIII International Workshop Iberchip
oai:rei.iteso.mx:11117/25822020-02-12T06:55:10Zcom_11117_560col_11117_561
Robust Tracking of Bio-Inspired References for a Biped Robot Using Geometric Algebra and Sliding Modes
Oviedo-Barriga, J.
Carbajal-Espinosa, O.
González-Jiménez, Luis E.
Castillo-Toledo, Bernardino
Bayro-Corrochano, Eduardo
Biped Robot
Sliding Mode Control
Geometric Algebra
Controlling walking biped robots is a challenging
problem due to its complex and uncertain dynamics. In order
to tackle this, we propose a sliding mode controller based on a
dynamic model which was obtained using the conformal
geometric algebra approach (CGA). The CGA framework
permits us to use lines, points, and other geometric entities, to
obtain the Lagrange equations of the system. The references
for the joints of the robot were bio-inspired in the kinematics of
a walking human body. The first and second derivatives of the
reference signal were obtained through an exact robust
differentiator based on high order sliding modes. The
performance of the proposed control scheme is illustrated
through simulation.
2015-10-16T18:15:31Z
2015-10-16T18:15:31Z
2013-05-10
info:eu-repo/semantics/conferencePaper
Oviedo-Barriga, J.; Carbajal-Espinosa, O.; González-Jiménez, L.E.; Castillo-Toledo, B.; Bayro-Corrochano, E. (2013). Robust Tracking of Bio-Inspired References for a Biped Robot Using Geometric Algebra and Sliding Modes. IEEE International Conference on Robotics and Automation (ICRA)
9781467356404
http://hdl.handle.net/11117/2582
eng
IEEE International Conference on Robotics and Automation;2013
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/6122020-02-12T06:54:03Zcom_11117_560col_11117_561
Design optimization of microstrip lines with via fences through surrogate modeling based on polynomial functional interpolants
Rayas-Sánchez, José E.
Vargas-Chávez, Noel
Crosstalk
Microstrip Via Fences
Guard Traces
High-speed Interconnects
Signal Integrity
Surrogate Modeling
Space Mapping
Electromagnetic Based Optimization
A common technique to reduce crosstalk between
microstrip lines consists of using via fences or guard traces.
However, via fences may significantly increase the amount of
reflections at the signaling microstrip lines. We propose an EMbased
design optimization method to achieve reduction of
crosstalk and transmission losses by the use of via fences without
a significant deterioration of impedance matching at the
signaling microstrip lines. Our method exploits surrogate models
using polynomial-based functional interpolants. We start from a
zero-order model that is as simple as a fixed EM model response.
This zero-order model is enhanced by multidimensional
polynomial interpolants around a reference base point in the
design space. The polynomial approximation is a function of the
design variables, and it is used to interpolate highly accurate EM
responses in a region of interest around the selected base point.
Global optimum values for the surrogate model weighting factors
are efficiently obtained in closed form. By optimizing the
surrogate model, we efficiently find an optimal performance for
the microstrip lines with via fences.
Index Terms — Crosstalk, microstrip
2013-05-21T19:14:23Z
2013-05-21T19:14:23Z
2010-10
info:eu-repo/semantics/conferencePaper
J. E. Rayas-Sánchez and N. Vargas-Chávez, “Design optimization of microstrip lines with via fences through surrogate modeling based on polynomial functional interpolants,” in IEEE Conf. Electrical Performance of Electronic Packaging and Systems (EPEPS 2010), Austin, TX, Oct. 2010, pp. 125-128. (E-ISBN: 978-1-4244-6866-9; P-ISBN: 978-1-4244-6865-2; INSPEC: 11664332)
http://hdl.handle.net/11117/612
eng
IEEE Conf. Electrical Performance of Electronic Packaging and Systems (EPEPS);2010
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE Conf. Electrical Performance of Electronic Packaging and Systems
oai:rei.iteso.mx:11117/60172020-02-12T06:47:48Zcom_11117_560col_11117_561
A Linear Inverse Space Mapping Algorithm for Microwave Design in the Frequency and Transient Domains (poster)
Rayas-Sánchez, José E.
Lara-Rojo, Fernando
Martínez-Guerrero, Esteban
CAD
High-speed Digital Design
Artificial Neural Networks (ANN)
Optimizing Expensive Functions
RF and Microwave Design
Space Mapping (SM)
Surrogate Models
Transient Design
An inverse space mapping optimization algorithm for designing linear and non-linear microwave circuits is presented in this work for the first time. The inverse space mapping follows a piece-wise linear formulation, avoiding the use of neural networks. Microwave circuits in the frequency domain or in the time domain transient-state can be efficiently optimized by applying this algorithm. We contrast our new algorithm with Neural Inverse Space Mapping (NISM) optimization. The physical design of a set of CMOS inverters driving an electrically long microstrip line on FR4 illustrates our algorithm.
2019-08-30T20:36:46Z
2019-08-30T20:36:46Z
2004-06
info:eu-repo/semantics/conferencePoster
J.E. Rayas-Sánchez, F. Lara-Rojo and E. Martínez-Guerrero, “A linear inverse space mapping algorithm for microwave design in the frequency and transient domains,” in IEEE MTT-S Int. Microwave Symp. Dig., Fort Worth, TX, Jun. 2004. (poster).
0-7803-8331-1
http://hdl.handle.net/11117/6017
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/50092020-02-12T06:49:36Zcom_11117_560col_11117_561
Towards a user network profiling for internal security using top-K rankings similarity measures
Parres-Peredo, Álvaro I.
Piza-Dávila, Hugo I.
Cervantes, Francisco
Seguridad Informática
Perfil de Usuarios
Redes de Computadoras
Top-K Rankings
Análisis de Trafico de Red
A major goal of current computer network security systems is to protect the network from outside attackers; however, protecting the network from its own users is still an unattended problem. In campus area networks, the risk of having internal attacks is high because of their topologies and the amount of users. This work proposes a new approach to identify whether a network user is having or not a normal behavior, by analyzing host traffic using top-k ranking similarity measures. The result of this analysis could be an input of intrusion detection systems. The document presents an experiment where real-time traffic of different users in a campus area network is compared to a reference traffic that corresponds to one of them.
2017-10-16T16:13:40Z
2017-10-16T16:13:40Z
2017-07
info:eu-repo/semantics/conferencePaper
A.I. Parres-Peredo; H.I. Piza-Davila and F. Cervantes (2017). Towards a user network profiling for internal security using top-k rankings similarity measures. In 40th Int. Conf. Telecommunications and Signal Processing (TSP 2017), Barcelona, Spain, pp.16-19. https://rei.iteso.mx/handle/11117/5009
978-1-5090-3982-1
http://hdl.handle.net/11117/5009
eng
Int. Conf. Telecommunications and Signal Processing;40th
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/101172023-09-30T09:00:19Zcom_11117_560col_11117_561
One World, Two Ideas and Three Adaptations: Innovation Intermediaries Enabling Sustainable Open Innovation in University–Industry Collaboration in Finland, Mexico and Nicaragua
Koria, Mikko
Osorno-Hinojosa, Roberto
Ramírez-Vázquez, DeliaDelCarmen
VanDenBroek, Antonius
Sustainable Development
Innovation Intermediaries
Open Innovation
University–industry Collaboration
Value Co-creation
Collaboration Culture
Sharing global knowledge and practices while adapting them to local contexts is a central concern in innovation and sustainable development. In this paper, we examined how intermediary organisations promoting innovation can foster and enable the diffusion and local adaptation of knowledge, practices of open innovation and collaboration between universities, firms and social innovators. We studied three longitudinal, interlinked cases from Finland, Mexico and Nicaragua, moving from highly industrialised to emerging-economy contexts. We traced how innovation intermediaries support developing cultures of collaboration and the value co-creation by diffusing knowledge, getting actors together, sharing activities and supporting the engagement between organisations. Through observation, interviews, participatory action and self-reflection, we proposed a stepwise generic model for diffusion and adaptation. We argued that all steps and roles must co-exist to achieve successful transfers, and noted the evolutionary nature of the process and the importance of aligning the interests and activities of the actors. We contributed to sustainable development goals through the global diffusion of open innovation knowledge within the collaboration of universities, firms and social innovators. We noted the limitations of addressing three cases, while proposing directions for further research on the capabilities of actors, collaboration practices and the co-creation of value by actors.
2023-09-29T19:18:16Z
2023-09-29T19:18:16Z
2022-09
info:eu-repo/semantics/article
Koria, M., Osorno-Hinojosa, R., Ramírez-Vázquez, D. & van den Broek, A. (2022). One World, Two Ideas and Three Adaptations: Innovation Intermediaries Enabling Sustainable Open Innovation in University–Industry Collaboration in Finland, Mexico and Nicaragua. Sustainability, 14(18), 11270.
https://hdl.handle.net/11117/10117
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
MDPI
oai:rei.iteso.mx:11117/25842020-02-12T06:55:37Zcom_11117_560col_11117_561
Visual Servoing and Robust Object Manipulation Using Symmetries and Conformal Geometric Algebra
Osuna-González, G.
González-Jiménez, Luis E.
Carbajal-Espinosa, O.
Loukianov, Alexander
Bayro-Corrochano, Eduardo
Symmetries
Object Manipulation
Visual Servoing
Object tracking and manipulation is an important process for many applications in robotics and computer vision. A novel 3D pose estimation of objects using reflectionally symmetry formulated in Conformal Geometric Algebra (CGA) is proposed in this work. The synthesis of the kinematics model for robots and a sliding mode controller using the CGA approach is described. Real time implementation results are presented for the pose estimation of object using a stereo vision system.
2015-10-16T18:38:31Z
2015-10-16T18:38:31Z
2014-11-20
info:eu-repo/semantics/conferencePaper
Osuna-González, G.; Gonzalez-Jimenez, L.E.; Carbajal-Espinosa, O.; Loukianov, A.; Bayro-Corrochano, E. (2014). Visual Servoing and Robust Object Manipulation Using Symmetries and Conformal Geometric Algebra. 14th IEEE-RAS International Conference on Humanoid Robots (Humanoids); Madrid, Spain, November 18-20.
9781479971756
http://hdl.handle.net/11117/2584
eng
IEEE-RAS International Conference on Humanoid Robots (Humanoids);14th
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/60032020-02-12T06:47:42Zcom_11117_560col_11117_561
A Holistic Methodology for System Margining and Jitter Tolerance Optimization in Post-Silicon Validation
Rangel-Patiño, Francisco E.
Viveros-Wacher, Andrés
Rayas-Sánchez, José E.
Vega-Ochoa, Edgar A.
Duron-Rosales, Ismael
Hakim, Nagib
Post-silicon Validation
Jitter
System Margining
Eye Diagram
The optimization of receiver analog circuitry in modern high-speed input/output (HSIO) links is a very time consuming post-silicon validation process. Current industrial practices are based on exhaustive enumeration methods to improve either the system margins or the jitter tolerance compliance test. In this paper, these two requirements are addressed in a holistic optimization-based approach. We propose an innovative objective function based on these two metrics. Our method employs Kriging to build a surrogate model based on system margining and jitter tolerance measurements. The proposed method is able to deliver optimal system margins and guarantee jitter tolerance compliance while substantially decreasing the typical post-Si validation time.
2019-08-30T18:04:19Z
2019-08-30T18:04:19Z
2016-12
info:eu-repo/semantics/article
F.E. Rangel-Patino, A. Viveros-Wacher, J.E. Rayas-Sánchez, E.A. Vega-Ochoa, I. Duron-Rosales, and N. Hakim, “A holistic methodology for system margining and jitter tolerance optimization in post-silicon validation,” in IEEE MTT-S Latin America Microwave Conf. (LAMC-2016), Puerto Vallarta, Mexico, Dec. 2016, pp. 1-4. DOI: 10.1109/LAMC.2016.7851268
978-1-5090-4288-3
http://hdl.handle.net/11117/6003
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/27762020-02-12T06:55:39Zcom_11117_560col_11117_561
Multi-mode Flight Sliding Mode Control System for a Quadrotor
Villanueva, Abraham
Castillo-Toledo, Bernardino
Bayro-Corrochano, Eduardo
Luque-Vega, Luis F.
González-Jiménez, Luis E.
Multi-mode Flight Control
Sliding Modes
Quadrotor
There is a wide range of applications for unmanned aerial vehicles that requires the capability of having several and robust flight controllers available. This paper presents the main framework of a multimode flight control system for a quadrotor based on
the super twisting control algorithm. The design stages for the four flight control modes encompassing manual, altitude, GPS fixed and autonomous mode are presented. The stability proof for each flight mode is carried out by means of Lyapunov functions while the stability
analysis for the complete system, when a transition from one mode to another occurs, is demonstrated using the switching nonlinear systems theory. The performance of the proposed framework is demonstrated in a simulation study taking into account external disturbances.
2016-01-11T20:05:09Z
2016-01-11T20:05:09Z
2015-06-12
info:eu-repo/semantics/conferencePaper
Villanueva, A.; Castillo-Toledo, B.; Bayro-Corrochano, E.;Luque-Vega, L.F., and González-Jiménez, L.E. (2015). Multi-mode Flight Sliding Mode Control System for a Quadrotor. 2015 International Conference on Unmanned Aircraft Systems.
http://hdl.handle.net/11117/2776
eng
International Conference on Unmanned Aircraft Systems;ICUAS 2015
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/14102020-02-12T06:54:56Zcom_11117_560col_11117_561
Neural modeling and space mapping: two approaches to circuit design
Bandler, John W.
Rayas-Sánchez, José E.
Zhang, Qi J.
Microwave Modeling
Neural Networks
Space Mapping
CAD
The drive in the microwave industry for manufacturability-driven design and time-to-market demands powerful and efficient computer-aided design tools. The need for statistical analysis and yield optimization coupled with the desire to use accurate physics-based and EM-based models leads to tasks that are computationally intensive using conventional approaches. We present two recent advances in the microwave CAD area, Artificial Neural Network (ANN) based modeling and Space Mapping (SM) based modeling for fast and accurate design of microwave components and circuits.
2014-08-25T18:58:08Z
2014-08-25T18:58:08Z
1999-08
info:eu-repo/semantics/conferencePaper
Bandler, J.W; Rayas-Sánchez, J.E. and Zhang, Q.J. (1999) “Neural modeling and space mapping: two approaches to circuit design,” in XXVI URSI General Assembly, Toronto, ON, Aug., p. 246.
http://hdl.handle.net/11117/1410
eng
XXVI URSI General Assembly;
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
XXVI URSI General Assembly
oai:rei.iteso.mx:11117/6562020-02-12T07:06:35Zcom_11117_560col_11117_561
GaN Quantum Dots: Physics and Applications
Dang, Le Si
Fishman, G.
Mariette, H.
Adelmann, Christoph
Martínez-Guerrero, Esteban
Simon, Julia
Daudin, B.
Monroy, E.
Pelekanos, N.T.
Rouvière, J.L.
Cho, Y.H.
Self-assembled Quantum Dot
Nitride Semiconductors
Excitons
Quantum Confined Stark Effect
TEM
Photoluminiscence
Cathodoluminiscence
UV Laser
Recent works by our group on hexagonal and cubic GaN/AlN quantum dots grown by molecular beam epitaxy are reviewed. It is shown that the growth of GaN on AlN can occur either in a layerby-
layer mode to form quantum wells or in the Stranski-Krastanow mode to form self-assembled quantum dots. High resolution transmission electron microscopy reveals that quantum dots are
truncated pyramids (typically 3 nm high and 15 nm wide), nucleating on top of a wetting layer.
The existence of internal electric elds of 7 MV/cm in hexagonal quantum dots is evidenced by observations of various physical e ects related to the quantum con ned Stark e ect, e.g. energy
redshift of the interband transition, decrease of its oscillator strength, or enhancement of the exciton interaction with LO phonons. Prospects for UV and near-IR applications, using interband and
intersubband transitions of GaN/AlN quantum dots, respectively, will be discussed also in this presentation.
2013-06-14T15:09:46Z
2013-06-14T15:09:46Z
2003-02-14
info:eu-repo/semantics/article
Le Si Dang, G. Fishman and H. Mariette, C. Adelmann, E. Martinez, J. Simon, B. Daudin, E. Monroy, N. Pelekanos and J. L. Rouviere, and Y. H. Cho, GaN Quantum Dots: Physics and Applications, Journal of the Korean Physical Society, Vol. 42, pp. S657-S661, (2003)
http://hdl.handle.net/11117/656
eng
Journal of the Korean Physical Society;Vol. 42
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
Korean Physical Society
oai:rei.iteso.mx:11117/31472020-02-12T07:02:12Zcom_11117_560col_11117_561
EM simulation of a low-pass filter based on a microstrip defected ground structure using COMSOL
Rayas-Sánchez, José E.
Aguilar-Torrentera, Jorge
Brito-Brito, Zabdiel
López, Carlos A.
Cervantes-González, Juan C.
Microstrip Structure
Defected Ground Structure
Radiation Loss
We perform EM simulations of a lowpass microstrip filter consisting of a crossjunction open stub and two unit sections implemented as defected ground structures (DGS). The defect introduced by unit sections corresponds to an etched lattice on the copper backside ground plane. The filter presents wide and deep attenuation characteristics in the stopband. Different model implementations were carried out with the aim at evaluating the computational costs versus accuracy. Simulations of a high-fidelity model are in good agreement with experimental data reported in a previous paper. COMSOL simulation settings, enclosing box, computational costs, and simulation times for the considered models are provided.
2016-03-03T18:34:35Z
2016-03-03T18:34:35Z
2012-10
info:eu-repo/semantics/conferencePaper
Rayas-Sánchez, J.E.; Aguilar-Torrentera, J.; Brito-Brito, Z.; Cervantes-González, J.C., and López, C.A. (2012). “EM simulation of a low-pass filter based on a microstrip defected ground structure using COMSOL” in COMSOL Conf., Boston, MA, Oct., pp. 1-6.
http://hdl.handle.net/11117/3147
eng
COMSOL Conference;2012
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
COMSOL Conference
oai:rei.iteso.mx:11117/33042020-02-12T06:51:42Zcom_11117_560col_11117_561
A Dynamical Model to Classify the Content of Multitemporal Images employing Distributed Computing Techniques
Villalón-Turrubiates, Iván E.
Remote Sensing
Multispectral Imaging
Geodynamics
Distributed Computing
An intelligent post-processing paradigm based on the use of a dynamical filtering technique modified to enhance the reconstruction quality of remote sensing indexes using multitemporal images and distributed computing techniques is proposed. As a matter of particular study, a robust algorithm is reported for the analysis of the dynamic behavior of geophysical signatures extracted from remotely sensed scenes. The simulation results prove the efficiency of the proposed technique along with the computational implementation based on a big-data framework using distributed processing.
2016-04-21T18:16:40Z
2016-04-21T18:16:40Z
2015-07
info:eu-repo/semantics/conferencePaper
Ivan E. Villalon-Turrubiates, “A Dynamical Model to Classify the Content of Multitemporal Images employing Distributed Computing Techniques”, in Proceedings of the 8th International Workshop on the Analysis of Multitemporal Remote Sensing Images (MULTITEMP), IEEE, Annecy Francia, 2015.
978-1-4799-7929-5
http://hdl.handle.net/11117/3304
eng
International Workshop on the Analysis of Multitemporal Remote Sensing Images (MULTITEMP);8th
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Information Resources Management Association
oai:rei.iteso.mx:11117/59442020-02-12T06:47:41Zcom_11117_560col_11117_561
Multiphysics polynomial-based surrogate modeling of microwave structures in frequency domain
Chávez-Hurtado, José L.
Rayas-Sánchez, José E.
Brito-Brito, Zabdiel
Multiphysics Modeling
Polynomial Model
Surrogate Modeling
Microwaves
A formulation to develop polynomial surrogate models for high frequency structures subject to multiphysics variations in the frequency domain is presented in this paper. The original fine model considers the mechanical stress and the electromagnetic (EM) effects caused by changes in circuit temperature. These effects are calculated in a FEM-based simulator for which we define the electro-thermo-mechanical properties of the metallic and dielectric materials involved. We illustrate our technique by developing a polynomial surrogate model of a microstrip line implemented in COMSOL, where the circuit temperature is varied from -20 to 180 Celsius degrees. Obtained results show a very good match between the multiphysical fine model and the corresponding surrogate.
2019-07-23T16:09:52Z
2016-12
info:eu-repo/semantics/conferencePaper
J. L. Chávez-Hurtado, J. E. Rayas-Sánchez, and Z. Brito-Brito, “Multiphysics polynomial-based surrogate modeling of microwave structures in frequency domain,” in IEEE MTT-S Latin America Microwave Conf. (LAMC-2016), Puerto Vallarta, Mexico, Dec. 2016, pp. 1-3.
978-1-5090-4288-3
http://hdl.handle.net/11117/5944
eng
http://quijote.biblio.iteso.mx/licencias/TodosLosDerechosReservados.pdf
IEEE
oai:rei.iteso.mx:11117/21382020-02-12T07:10:37Zcom_11117_1299com_11117_560col_11117_1469col_11117_561
Análisis morfológico de patentes para desarrollar un producto de seguridad vehicular
Ortiz-Cantú, Sara J.
Pedroza-Zapata, Álvaro R.
Martínez-Guerrero, Esteban
Gestión de la Innovación y la Tecnología
Inteligencia Tecnológica
Análisis Morfológico de Patentes
Oportunidades Tecnológicas
En este trabajo se proporcionan las bases de inteligencia tecnológica para un proyecto de seguridad vehicular, adoptando el modelo de innovación propuesto por Myers y Marquis, Se hizo un análisis morfológico de patentes basado en palabras clave para buscar las configuraciones ya utilizadas (protegidas) y se identifican las configuraciones aún no empleadas para identificar las oportunidades tecnológicas a desarrollar. Este análisis se presta para conocer el estado del arte y no comenzar de cero o inventar el hilo negro; evitar invadir propiedad industrial de terceros, y descubrir huecos de oportunidades tecnológicas
2015-06-22T18:44:51Z
2015-06-22T18:44:51Z
2013-02
info:eu-repo/semantics/article
Ortiz-Cantú, S.J.;Pedroza-Zapata, Á.R. y Martínez-Guerrero, E. (2013). Análisis morfológico de patentes para desarrollar un producto de seguridad vehicular. Journal of Technology Management & Innovation, Vol. 8 Special Issue Altec. pp 105 – 116.
07182724
http://hdl.handle.net/11117/2138
spa
Journal of Technology Management & Innovation;Vol. 8 Special Issue Altec
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Universidad Alberto Hurtado
oai:rei.iteso.mx:11117/107252024-01-30T09:00:22Zcom_11117_560col_11117_561
PCIe Gen6 physical layer equalization tuning by using unsupervised and supervised machine learning techniques
Rangel-Patiño, Francisco
Viveros-Wacher, Andrés
Rayas-Sánchez, José E.
Vega-Ochoa, Édgar
Shival, Hemanth
Rodríguez-Saenz, Sofía
Clustering
Equalization
Equalization Maps
Eye-diagram
FIR
GPR
HSIO
High-speed Links
Metamodels
Optimization
PCIe
Post-silicon Validation
Receiver
Signal Integrity
Transmitter
Tuning
Ever faster applications triggered the development of the new PCIe Gen6 specification, reaching 64 GT/s data rates with PAM4 modulation. This brings new challenges for the physical channel design, where equalization (EQ) plays a key role. PCIe specification defines an EQ process at the transmitter (Tx) and the receiver (Rx). Current post-silicon validation practices consist of finding optimal subsets of Tx and Rx coefficients by measuring the eye diagram at the Rx across many different channels. However, these practices are very time consuming since they require massive lab measurements. In this paper, we propose machine learning techniques to cluster post-silicon data from different channels and feed those clusters to Gaussian process regression (GPR) models. We then optimize each GPR surrogate to obtain the optimal tuning settings for each identified cluster. Our methodology is validated by using MATLAB SerDes Toolbox simulations of the functional eye diagram of a Gen6 link.
2024-01-25T16:19:48Z
2024-01-25T16:19:48Z
2023-12
info:eu-repo/semantics/article
F. Rangel-Patiño, A. Viveros-Wacher, S. Rodríguez-Saenz, J.E. Rayas-Sánchez, E. Vega-Ochoa, and H. Shival, “PCIe Gen6 physical layer equalization tuning by using unsupervised and supervised machine learning techniques,” in IEEE MTT-S Latin America Microwave Conf. (LAMC-2023), San Jose, Costa Rica, Dec. 2023, pp. 105-108.
979-8-3503-1641-4
https://hdl.handle.net/11117/10725
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/6182020-02-12T07:06:17Zcom_11117_560col_11117_561
On knowledge-based neural networks and neuro-space mapping
Rayas-Sánchez, José E.
Zhang, Qi J.
Space Mapping
Electromagnetic Based Optimization
Neural Networks
Knowledge Based Techniques
This article reviews the most significant milestones
in CAD methodologies for intelligent EM-based modeling and
design optimization using artificial neural networks and space
mapping. We consider knowledge-based and automatic neural
network model generation based on advanced data sampling
algorithms. Computationally efficient neural space mapping
methods for highly accurate EM-based modeling, statistical
analysis and yield estimation are described. We briefly compare
different strategies for developing suitable (input and output)
neuro-mappings. Inverse modeling exploiting neural networks is
addressed, including neural inverse space mapping optimization.
Embedded passives, microstrip filters, active devices and
waveguide structures illustrate the techniques.
2013-05-21T19:14:54Z
2013-05-21T19:14:54Z
2012-06
info:eu-repo/semantics/article
J. E. Rayas-Sánchez and Q. J. Zhang, “On knowledge-based neural networks and neuro-space mapping,” in IEEE MTT-S Int. Microwave Symp. Dig., Montreal, Canada, Jun. 2012, pp. 1-3. (ISSN: 0149-645X; E-ISBN: 978-1-4673-1086-4; P-ISBN: 978-1-4673-1085-7; DOI: 10.1109/MWSYM.2011.5972954)
http://hdl.handle.net/11117/618
eng
IEEE MTT-S International Microwave Symposium;2012
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE MTT-S International Microwave Symposium
oai:rei.iteso.mx:11117/25832020-02-12T06:55:18Zcom_11117_560col_11117_561
Power Line Inspection Via an Unmanned Aerial System Based on the Quadrotor Helicopter
Luque-Vega, Luis F.
Castillo-Toledo, Bernardino
Loukianov, Alexander
González-Jiménez, Luis E.
Quadrotor
Power Line Inspection
Computer Vision
The inspection of high voltage power transmission lines is mainly carried out by manned aerial vehicles or foot patrol. However, these maintenance methodologies for inspection are somehow inefficient and expensive. Moreover, helicopter assisted inspection endangers the human life. Recently, unmanned aerial vehicles have been under development in several research centers all over the world due to its potential applications. In this paper, we present an unmanned aerial system based on the quadrotor helicopter for high voltage power line inspection. Our interest is to equip the quadrotor helicopter with the necessary payload in order to be able to carry out a qualitative inspection, therefore the hardware architecture of the aerial robotic system is presented. Finally, some experimental results are shown to demonstrate the feasibility of the proposed system.
2015-10-16T18:22:54Z
2015-10-16T18:22:54Z
2014-04-16
info:eu-repo/semantics/conferencePaper
Luque-Vega, L.F.; Castillo-Toledo, B.; Loukianov, A.; Gonzalez-Jimenez, L.E. (2014). Power Line Inspection Via an Unmanned Aerial System Based on the Quadrotor Helicopter. 17th IEEE Mediterranean Electrotechnical Conference, Beirut, Lebanon, 13-16 April.
9781479923380
http://hdl.handle.net/11117/2583
eng
IEEE Mediterranean Electrotechnical Conference;17th
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/60052020-02-12T06:47:46Zcom_11117_560col_11117_561
Design and Validation of a Portable Radio-Frequency Diathermy Prototype
Corres-Matamoros, Antonio
Martínez-Guerrero, Esteban
Rayas-Sánchez, José E.
Low-frequency Oscillator
Voltage-controlled Oscillator
Inductive-load Voltage Amplifier
Radio-frequency Diathermy
RFD
Characterization
Prototype
Product Design
In this work we present the design of a portable radio-frequency diathermy (RFD) prototype and its initial medical validation. The electronic circuit consists of a voltage-controlled oscillator, a low-frequency oscillator and a voltage amplifier powered by a rechargeable battery. Circuit was designed to develop a pulsed output of 120 V at a frequency ranging from 500 KHz to 1 MHz. The RFD circuit was implemented with commercially available components and assembled on a printed circuit board (PCB). The complete product, including flexible electrodes, was assembled on a 6 cm x 9 cm x 3 cm cabinet. Experimental results show that the output can reach a pulsed voltage of 84 Vpp and a current of 120 mA during 8 hours of continuous operation, which fulfills the autonomy requirement of portable devices for low power RFD applications. A comparative study according to physical rehabilitation protocol was carried out on a universe of 20 patients with lumbago disease with continuous RFD treatment using our prototype versus a traditional RFD treatment. Preliminary results show that muscle healing was more effective in patients with continuous RFD treatment, validating this prototype for therapeutic applications.
2019-08-30T18:20:28Z
2019-08-30T18:20:28Z
2017-06
info:eu-repo/semantics/article
A. Corres-Matamoros, E. Martínez-Guerrero, and J. E. Rayas-Sánchez, “Design and validation of a portable radio-frequency diathermy prototype,” Int. Caribbean Conf. Devices, Circuits, and Systems (ICCDCS-2017), Cozumel, Mexico, Jun. 2017, pp. 93-96. DOI: 10.1109/ICCDCS.2017.7959710
2165-3550
http://hdl.handle.net/11117/6005
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/33002020-02-12T06:51:43Zcom_11117_560col_11117_561
Aerosol Air Mass Distinctions over Jalisco using Multi-Angle Imaging Spectroradiometer
Faus-Landeros, Gloria E.
Villalón-Turrubiates, Iván E.
Global Ozone Chemistry Aerosol Radiation and Transport GOCART
Satellite Measurements
Aerosols play an important role in global climate change.[Reference new IPCC report]. These particles directly affect the radiative budget due to absorption and scattering of radiation. Additionally, aerosols are known to alter various ecosystems, cloud formation and properties, precipitation, air quality and visibility. They also have well-documented impacts on human health.
In the last 30 years, progress has been made in remote sensing retrievals of aerosol distribution and properties, using different satellite sensors as well as ground-based sun photometer instruments, monitoring programs, and intensive field campaigns around the world. This paper describes how the study and analysis of satellite-based (CALIPSO) measurements and the Global Ozone Chemistry Aerosol Radiation and Transport (GOCART) model make it possible to identify some of the predominant tropospheric aerosols, black carbon and organic carbon. We present the black carbon and organic carbon aerosols and their optical properties by season, within the region of Jalisco México.
2016-04-21T17:10:14Z
2016-04-21T17:10:14Z
2014-07
info:eu-repo/semantics/conferencePaper
Gloria E. Faus-Landeros, Ivan E. Villalon-Turrubiates, “Aerosol Air Mass Distinctions over Jalisco using Multi-Angle Imaging Spectroradiometer”, in Proceedings of the 2014 IEEE International Geoscience and Remote Sensing Symposium (IGARSS): Energy and our Changing Planet, Québec Canadá, 2014, pp. 141-144.
978-1-4799-5775-0
http://hdl.handle.net/11117/3300
eng
Proceedings of the 2014 IEEE International Geoscience and Remote Sensing Symposium (IGARSS): Energy and our Changing Planet;
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Institute of Electrical and Electronics Engineers
oai:rei.iteso.mx:11117/49552020-02-12T06:54:53Zcom_11117_560col_11117_561
Model for Identification of Seasonal Aerosols within the Environment for a Particular Region using Remote Sensing Data
Faus-Landeros, Gloria E.
Villalón-Turrubiates, Iván E.
Remote Sensing
Aerosols
Environment
Remote sensing methods for the understanding of physical phenomena has been used since the last 50 years. Satellite- based sensors and ground-based sun photometers provide quantitative and qualitative knowledge about the composition of different elements that exists within the atmosphere of the Earth. One of the current tasks relates to understanding the changes of the climate on different regions throughout the planet, where a particular problem is related to aerosol climate forcing. Improvement in measurement-based systems is necessary to identify remaining issues and improve quantification of aerosol effects on climate. Also the improvement in modeling is necessary to confidently extend estimates of forcing to prior times and to project future emissions. Achieving these capabilities will require a synergistic approach between observational systems and modeling. This paper describes how the study and analysis of satellite-based and ground-based measurements can be used to develop an innovative method, based in the existent methods to calculate some optical properties that will help in characterization of dominant temporal aerosols.
2017-09-15T18:32:36Z
2017-09-15T18:32:36Z
2016-12
info:eu-repo/semantics/conferencePaper
Gloria E. Faus Landeros e Iván E. Villalón-Turrubiates, “Model for Identification of Seasonal Aerosols within the Environment for a Particular Region Using Remote Sensing Data”, en Proceedings of the 2016 IEEE 1er Congreso Nacional de Ciencias Geoespaciales (CNCG): Sustainable Geospatial Technology at Service of Society, Ciudad de México, 2016, pp. 34- 38.
978-1-5386-1863-9
http://hdl.handle.net/11117/4955
eng
2016 IEEE 1er Congreso Nacional de Ciencias Geoespaciales (CNCG);
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Institute of Electrical and Electronics Engineers
oai:rei.iteso.mx:11117/41532020-02-12T07:13:01Zcom_11117_1299com_11117_560col_11117_1469col_11117_561
A technology park with a triple helix trajectory: Tecnosinos- São Leopoldo’s technology park (Brazil)
Ortiz-Cantú, Sara J.
Pedroza-Zapata, Álvaro R.
Technology Park
Triple Helix
Cabral–Dahab Paradigm
Government
University
Regional Development
University’s Curriculum
Knowledge Economy
This paper analyses, through a case study method, the genesis and management of a laureate, private, and university-linked technology park. The analysis is under the lens of the ten Cabral-Dahab criteria paradigm and the Triple Helix paradigm. In addition to confirming the park’s triple helix trajectory (University - Organized Private Sector – Government) and the combination of both paradigms as an appropriate model for a developing country, specific situations were also found in the areas of park management as well as the university’s curriculum in relation to electronics and information technology, that contribute to the development of the São Leopoldo region (Brazil) based on the knowledge economy. Further aspects of knowledge related to the Cabral-Dahab paradigm criteria are mentioned.
2017-01-12T16:33:22Z
2017-07-15T10:01:01Z
2016-10
info:eu-repo/semantics/article
Ortiz-Cantú, S. J. & Pedroza-Zapata, Á.R. (2016) A technology park with a triple helix trajectory: Tecnosinos- São Leopoldo’s technology park (Brazil).International Journal of Technology Transfer and Commercialisation, 14 (1), pp 96-116.
1470-6075
DOI: 10.1504/IJTTC.2016.079929
ESSN: 1741-5284
http://hdl.handle.net/11117/4153
eng
International Journal of Technology Transfer and Commercialisation;14(1)
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Brazil
Inderscience
oai:rei.iteso.mx:11117/5762020-02-12T06:48:16Zcom_11117_560col_11117_561
SMX-A Novel Object-Oriented Optimization System
Rayas-Sánchez, José E.
Bakr, Mohamed H.
Bandler, John W.
Cheng, Qingsha S.
Ismail, Mostafa A.
SMX
Electromagnetic Based Design
Neural Networks
Microwave Circuits
Space Mapping
The novel, object-oriented SMX optimization
system implements the powerful Surrogate Model-based
Space Mapping (SMSM) algorithm, which is automated for
the first time. SMX is capable of driving commercial EM,
circuit and user-supplied simulators. The SMX architecture
permits easy integration of new simulators and optimization
tools. The power of SMX is illustrated through an
optimization example exploiting Momentum.
2013-05-20T18:57:19Z
2013-05-20T18:57:19Z
2001-05
info:eu-repo/semantics/conferencePaper
M. H. Bakr, J. W. Bandler, Q. S. Cheng, M. A. Ismail and J. E. Rayas-Sánchez, “SMX—A novel object-oriented optimization system,” in IEEE MTT-S Int. Microwave Symp. Dig, Phoenix, AZ, May 2001, pp. 2083-2086.
http://hdl.handle.net/11117/576
eng
IEEE MTT-S International Microwave Symposium;2001
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE MTT-S International Microwave Symposium
oai:rei.iteso.mx:11117/27832020-02-12T06:55:40Zcom_11117_560col_11117_561
Return-loss minimization of package interconnects through input space mapping using FEM-based models
Cervantes-González, Juan C.
López, Carlos A.
Rayas-Sánchez, José E.
Brito-Brito, Zabdiel
Hernández-Sosa, Gaudencio
Space Mapping
Package Interconnects
EM-based Design Optimization
High-speed
Return-loss
FEM Space Mapping
Highly efficient CAD methodologies based on full-wave EM analysis, for the design of package interconnects are necessary due to the increased frequencies of operation and a desire of faster time-to-market. In this work, we exploit a Broyden-based input space mapping (SM) algorithm with both fine and coarse models implemented with the finite-element method (FEM), to efficiently optimize design parameters of a modern package interconnect. This optimization algorithm has been applied to a single-ended package line resulting in a significant decrease of the return loss in the 5-10 GHz range, requiring just a few fine model evaluations.
2016-01-12T17:32:01Z
2013-08
info:eu-repo/semantics/conferencePaper
Cervantes-González, J.C.; López, C.A.; Rayas-Sánchez, J.E.; Brito-Brito, Z, and Hernández-Sosa, G. (2013). “Return-loss minimization of package interconnects through input space mapping using FEM-based models,” in Proc. SBMO/IEEE MTT-S Int. Microwave Optoelectronics Conf. (IMOC-2013), Rio de Janeiro, Brazil, Aug. 2013, pp. 1-4.
978-1-4799-1397-8
DOI: 10.1109
http://hdl.handle.net/11117/2783
eng
Proceedings of the SBMO/IEEE MTT-S International Microwave Optoelectronics Conference;IMOC-2013
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
SBMO/IEEE MTT-S International Microwave Optoelectronics Conference (IMOC-2013)
oai:rei.iteso.mx:11117/27812020-02-12T06:50:17Zcom_11117_560col_11117_561
Systematic configuration of coarsely discretized 3D EM solvers for reliable and fast simulation of high-frequency planar structures
Rayas-Sánchez, José E.
Brito-Brito, Zabdiel
Cervantes-González, Juan C.
López, Carlos A.
EM Solver
Meshing
Coarse Discretization
Simulation Bounding Box
Boundary Conditions
Microstrip Structure
High-frequency Simulation
Signal Integrity
Accurate simulation of microstrip and other planar structures at very high frequencies usually requires employing full-wave electromagnetic (EM) solvers. For planar circuits, 2.5D EM solvers are especially suited and easy to configure. However, in some cases, planar circuits are required to be simulated in 3D solvers. On the other hand, low-resolution discretization in 3D solvers is necessary when coarse models are employed for direct EM optimization, for instance, in space mapping methodologies, or in surrogate-based modeling techniques. In this work, we propose a systematic methodology to find a suitable 3D EM solver configuration when low-resolution meshing is needed for reliable and fast simulation of planar structures. We illustrate how improper configuration of the 3D EM solver might lead to significant alteration of the inherent structure’s EM response, as well as to numerical noise that affects the parameterized usage of these models, such as in direct EM optimization. Our technique is illustrated by a couple of classical microstrip filters simulated with a commercially available 3D full-wave EM solver.
2016-01-12T17:18:52Z
2013-02
info:eu-repo/semantics/conferencePaper
Rayas-Sánchez, J.E.; Brito-Brito, Z; Cervantes-González, J.C.; and López, C.A. (2013). “Systematic configuration of coarsely discretized 3D EM solvers for reliable and fast simulation of high-frequency planar structures,” in IEEE Latin American Symp. Circuits and Systems Dig. (LASCAS 2012), Cuzco, Peru, pp.1-4.
978-1-4673-4897-3
DOI: 10.1109/LASCAS.2013.6519093
http://hdl.handle.net/11117/2781
eng
IEEE Latin American Symposium on Circuits and Systems Digest;LASCAS 2013
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE Latin American Symposium on Circuits and Systems (LASCAS 2013)
oai:rei.iteso.mx:11117/12172020-02-12T07:07:32Zcom_11117_560col_11117_561
An evolutionary algorithm with acceleration operator to generate a subset of typical testors
Sánchez-Díaz, Guillermo
Díaz-Sánchez, Germán
Mora-González, Miguel
Aguirre-Salado, Carlos A.
Huerta-Cuéllar, Guillermo
Piza-Dávila, Hugo I.
Reyes-Cárdenas, Óscar
Cárdenas-Tristán, Abraham
Hill Climbers
Feature Selection
Typical Testors
Pattern Recognition
This paper is focused on introducing a Hill-Climbing algorithm as a way to solve the problem of generating
typical testors – or non-reducible descriptors – from a training matrix. All the algorithms reported
in the state-of-the-art have exponential complexity. However, there are problems for which there is no
need to generate the whole set of typical testors, but it suffices to find only a subset of them. For this reason,
we introduce a Hill-Climbing algorithm that incorporates an acceleration operation at the mutation
step, providing a more efficient exploration of the search space. The experiments have shown that, under
the same circumstances, the proposed algorithm performs better than other related algorithms reported
so far.
2014-03-14T18:13:16Z
2014-03-14T18:13:16Z
2014-05-01
info:eu-repo/semantics/article
Sanchez-Diaz, G.; Diaz-Sanchez, G.; Mora-Gonzalez, M; Piza-Davila, H.I.; Aguirre-Salado, C.A.; Huerta-Cuellar, G; Reyes-Cardenas, O.; Cardenas-Tristan, A. (2014). "An evolutionary algorithm with acceleration operator to generate a subset of typical testors". Pattern Recognition Letters. Volume 41, 1 May, pp.34-42.
0167-8655
http://www.sciencedirect.com/science/article/pii/S0167865513004297
http://hdl.handle.net/11117/1217
eng
Pattern Recognition Letters;41
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Elsevier
oai:rei.iteso.mx:11117/21342020-02-12T07:10:35Zcom_11117_1299com_11117_560col_11117_1469col_11117_561
¿Qué es la gestión de la innovación y la tecnología (GInnT)?
Ortiz-Cantú, Sara J.
Pedroza-Zapata, Álvaro R.
Gestión
Innovación
Tecnología
Gestión de la Innovación y la Tecnología
El objetivo de este artículo es presentar el estado de la cuestión del campo de conocimiento de la gestión de la innovación y la tecnología. Para lo cual se analizarán por separado cada uno de los conceptos para luego establecer las relaciones entre ello; además se estudiarán las aportaciones procedentes de distintas disciplinas científicas como la sociología, la historia, la economía y distintos campos de la dirección de empresas (muy especialmente la dirección estratégica, la dirección de operaciones y el comportamiento organizativo) para construir este campo.
2015-06-22T16:32:05Z
2015-06-22T16:32:05Z
2006-06
info:eu-repo/semantics/article
Ortiz-Cantú, S.J. y Pedroza-Zapata, A.R. (2006). ¿Qué es la gestión de la innovación y la tecnología (GInnt)?, Journal of Technology Management & Innovation, 1(2).
ISSN 07182724
http://hdl.handle.net/11117/2134
spa
Journal of Technology Management & Innovation;1(2)
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
Universidad de Talca
oai:rei.iteso.mx:11117/16252020-02-12T06:46:17Zcom_11117_560col_11117_561
Métodos de docencia constructivistas y herramientas virtuales
Zaldívar-Carrillo, Víctor H.
Rosas-Tello, Christian H.
Villareal-García, Isaac
Educación
Constructivismo
Sistemas de Gestión de Cursos
Métodos de Docencia
Drupal
Moodle
Herramientas Virtuales
Hoy en día se considera que el constructivismo es una de las teorías que mejor explican el aprendizaje y se ha utilizado como fundamento para el desarrollo de un sinnúmero de técnicas de docencia que funcionan dentro del salón de clase.
Por otro lado, el desarrollo de la tecnología ha hecho que los sistemas de administración de cursos o sistemas de administración de aprendizaje (LMS, por sus siglas en inglés) sean herramientas muy utilizadas como apoyo a los cursos desde nivel de educación primaria hasta el posgrado, llegando a haber programas educativos que se ofrecen exclusivamente en línea a través de Internet. Sin embargo, las herramientas para la administración de cursos no han incorporado las técnicas constructivistas, de manera que es prácticamente imposible realizar actividades constructivistas en línea. En este sentido comenzamos un proyecto para desarrollar un conjunto de plug-ins para una herramienta open-source de administración de cursos (Drupal) de manera que estos plug-ins permitan que un profesor realice la planificación, ejecución y evaluación de las actividades de su curso de manera consistente con la teoría constructivista.
Comenzamos con el desarrollo de una entrevista a un grupo de profesores interesados en el tema. Esta entrevista nos permitió recabar, por un lado, qué aspectos de las técnicas constructivistas resultaban más interesantes para los profesores y en qué momento del curso les interesaban más y, por otro, un conjunto de requerimientos funcionales para los plug-ins a desarrollar.
Para fines de este estudio tomamos como referencia los siguientes aspectos del desarrollo constructivista en un curso de nivel licenciatura: planificación de resultados de aprendizaje, trabajo en equipo, elaboración de preguntas y cuestionarios, discusiones y debates y métodos de evaluación alternativa. Todos estos aspectos han sido abordados abundantemente en los espacios de enseñanza y docencia y existe una gran cantidad de literatura que va desde las bases teóricas hasta las técnicas prácticas en el aula para implementarlas. Sin embargo, ninguna herramienta basada en web incorpora estas técnicas o funcionalidades para implementarlas cuando se trata de cursos en línea o cursos presenciales con soporte en línea.
En esta ponencia presentamos los resultados de la aplicación de las entrevistas y un avance de los plug-ins resultantes, así como las impresiones de los profesores que han hecho pruebas sobre ellos y un plan de trabajo para los desarrollos futuros.
2015-04-29T18:52:07Z
2015-04-29T18:52:07Z
2010-08-25
info:eu-repo/semantics/conferencePaper
Zaldivar-Carrillo, V.H.; Villareal-García, I.; Rosas-Tello, C.H. (2010). "Métodos de docencia constructivistas y herramientas virtuales"; 5° Congreso Internacinal de Sistemas de Innovación para la Competitividad 2010 "Tecnologías Convergentes para la Competitividad", Consejo Estatal de Ciencia y Tecnología del Estado de Guanajuato, Celaya, Guanajuato, 25 al 27 de agosto.
http://hdl.handle.net/11117/1625
spa
Congreso Internacional de Sistemas de Innovación para la Competitividad;
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Consejo Estatal de Ciencia y Tecnología del Estado de Guanajuato
oai:rei.iteso.mx:11117/26162020-02-12T06:49:03Zcom_11117_1299com_11117_560col_11117_1469col_11117_561
Análisis desde el paradigma Cabral-Dahab de un parque tecnológico de universidad privada: Parque Tecnológico ITESO (México)
Ortiz-Cantú, Sara J.
Pedroza-Zapata, Álvaro R.
Parque Tecnológico
Gestión de la Innovación y la Tecnología
Vinculación Universidad Empresa
Transferencia
Desarrollo
ITESO Parque Tecnológico
En este trabajo se analiza, mediante el método de estudio de caso, la gestión de un parque tecnológico propiedad de una universidad privada: el Parque Tecnológico ITESO (PTI). El marco teórico se basa el modelo Triple Hélice y los diez criterios del Paradigma Cabral-Dahab de la gestión de parques tecnológicos. El análisis mostró que el PTI tuvo sustancial respaldo de varios niveles de gobierno, asociaciones empresariales y la universidad con su red de contactos.
Encontramos que el PTI tiene una identidad “en construcción y definición”; que el financiamiento público ha sido la palanca fundamental para el avance del parque y de la estructura de apoyo directo. Hay una pobre interacción de investigación formal entre las empresas y la universidad, tal vez inherente a la cultura de ambos sectores. Se requiere investigar nuevas formas de aproximarlos para lograr una mejor relación con resultados ganar-ganar en ambos sectores para beneficio de la localidad. En el interior del parque se cuenta con laboratorios de medio ambiente y energía solar. No existen servicios de apoyo para desarrollar o ampliar los mercados locales y mucho menos los internacionales.
El desarrollo del caso ejemplifica de una manera clara la actuación conjunta de las tres hélices: universidad-empresas y gobierno para lograr que el parque tenga un efecto positivo en el desarrollo económico de la región. Entre los resultados se mencionan aspectos de conocimiento relacionados a los criterios de análisis. La principal recomendación a los políticos es utilizar los criterios discutidos en una etapa temprana del desarrollo de un parque tecnológico universitario para detectar inconsistencias en los planes. Además, tener en cuenta que un parque tecnológico exitoso puede ser un instrumento apropiado para conformar un ecosistema de innovación y emprendimiento universitario que puede coadyuvar al desarrollo de la región.
2015-10-31T00:03:38Z
2015-10-31T00:03:38Z
2015-10-19
info:eu-repo/semantics/conferencePaper
Pedroza-Zapata,Á.R. y Ortiz-Cantú, S.J. (2015) Análisis desde el paradigma Cabral-Dahab de un parque tecnológico de universidad privada: Parque Tecnológico ITESO (México). XVI Congreso Latino-Iberoamerciano de Gestión de la Tecnología, Porto Alegre, Brasil.
http://hdl.handle.net/11117/2616
spa
Congreso Latino-Iberoamerciano de Gestión de la Tecnología;XVI
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Altec
oai:rei.iteso.mx:11117/21512020-02-12T06:48:21Zcom_11117_1299com_11117_560col_11117_1469col_11117_561
ITIL (Information Technology Infrastructure Library) como medio para mejorar la eficacia de los servicios de TI. Un caso de estudio.
Ortiz-Cantú, Sara J.
Ruiz-Sahagún, Andrés
Ortega-Guzmán, Víctor H.
Fernández-Larios, Óscar F.
Gestión de la Innovación y la Tecnología
Information Technology Infrastructure Library ITIL
Metodología de Diagnóstico
ITSM
El presente trabajo presenta el caso de una gerencia de sistemas de Información de una organización que decidió utilizar a ITIL (Information Technology Index Library) como medio para mejorar la eficacia de los servicios de TI. El caso de estudio incluye tres fases: el diagnóstico del departamento, el diseño y documentación de los procesos de ITIL, incluyendo la metodología de trabajo, y la implantación de estos. Se presentan resultados preliminares derivados de la medición de los procesos.
2015-06-23T22:02:59Z
2015-06-23T22:02:59Z
2010
info:eu-repo/semantics/conferencePaper
Ortiz-Cantú, S.J.; Ruiz-Sahagún, A.; Ortega-Guzmán, V.H. y Fernández-Larios, Ó.F. (2010). ITIL (Information Technology Infrastructure Library) como medio para mejorar la eficacia de los servicios de TI. Un caso de estudio. Congreso Internacional de Sistemas de Innovación para la Competitividad.
http://hdl.handle.net/11117/2151
spa
Congreso Internacional de Sistemas de Innovación para la Competitividad;Edición 2010
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
SINNCO
oai:rei.iteso.mx:11117/5952020-02-12T06:45:30Zcom_11117_560col_11117_561
Diseño de circuitos de alta frecuencia usando mapeo espacial neural con no linealidad regulada
Rayas-Sánchez, José E.
Gutiérrez-Ayala, Vladimir
Mapeo Espacial Neural
Circuitos De Alta Frecuencia
En este trabajo se realizan mejoras sustanciales al
algoritmo de diseño de circuitos electrónicos basado en
mapeo espacial neural. Dichas mejoras incluyen la
regulación de la cantidad de no-linealidad utilizada por la
red neuronal durante el entrenamiento del neuromodelo
mapeado, así como una simplificación del proceso de
obtención del siguiente punto predicho por el algoritmo, y
la determinación automática de criterios de finalización del
mismo. Con las mejoras implementadas se obtiene un
algoritmo de diseño más eficiente y robusto. Para ilustrar
el desempeño de este nuevo algoritmo se diseñan dos
filtros en tecnología microcinta: un filtro rechaza-banda
con “stubs” abiertos resonantes de un cuarto de longitud
de onda, y un filtro notch de alta selectividad. Para ambos
circuitos se utilizan simuladores electromagnéticos de
onda completa.
2013-05-21T17:03:26Z
2013-05-21T17:03:26Z
2006-03
info:eu-repo/semantics/conferencePaper
V. Gutiérrez-Ayala and J. E. Rayas-Sánchez, “Diseño de circuitos de alta frecuencia usando mapeo espacial neural con no-linealidad regulada,” in XII International Workshop Iberchip (IWS 2006), San Jose, Costa Rica, Mar. 2006, pp. 150-153.
http://hdl.handle.net/11117/595
spa
International Workshop Iberchip;XII
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
XII International Workshop Iberchip
oai:rei.iteso.mx:11117/32372020-02-12T07:02:13Zcom_11117_560col_11117_561
Supervisory control of discrete event systems using observers
Campos-Rodríguez, Raúl
Alcaraz-Mejía, Mildreth
Mireles-García, José
Petri Net
Discrete Event Systems
Observers
State Feedback
Supervisory Control
State-feedback supervisory controllers for discrete event systems are synthesized. A state observer providing the feedback information is integrated to the control scheme. Petri nets models are used for modeling the system, the controller and the observer. The required behavior of the system is specified as linear constrains. The proposed technique allows the construction of controllers for systems with partial state observation. An application example is provided.
2016-04-04T22:27:50Z
2016-04-04T22:27:50Z
2007
info:eu-repo/semantics/conferencePaper
R. Campos-Rodríguez; M. Alcaraz-Mejía & J. Mireles-García (2007). "Supervisory control of discrete event systems using observers". IEEE Mediterranean Control Conference, Athens.
978-1-4244-1281-5
http://hdl.handle.net/11117/3237
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/21502020-02-12T06:48:23Zcom_11117_1299com_11117_560col_11117_1469col_11117_561
Retos y oportunidades para la formación de recursos humanos en gestión de la innovación y la tecnología en México
Pedroza-Zapata, Álvaro R.
Ortiz-Cantú, Sara J.
Gestión de la Innovación y la Tecnología
Formación de Recursos Humanos
Posgrados
Desarrollo Económico
Desarrollo Tecnológico
En este documento se exploran los retos y oportunidades en la formación de recursos humanos en gestión de la innovación y la tecnología (GINNT) como un factor que pudiera contribuir al desarrollo económico apoyando el desarrollo tecnológico que podrían generar en las empresas los especialistas formados en esta área de conocimiento. Se muestra la problemática que presenta el país en términos de competitividad; posteriormente se acota el área de conocimiento de la GINNT de acuerdo a la experiencia internacional en términos de los temas que se manejan y, finalmente, se presenta un estudio de la oferta de programas de GINNT a nivel nacional e internacional, que resulta insuficiente para formar a los especialistas necesarios para corregir rápidamente el rumbo competitivo a través del desarrollo tecnológico.
2015-06-23T21:45:09Z
2015-06-23T21:45:09Z
2006-05
info:eu-repo/semantics/conferencePaper
Pedroza-Zapata, Á.R. y Ortiz-Cantú, S.J. (2006). Retos y oportunidades para la formación de recursos humanos en gestión de la innovación y la tecnología en México. X Congreso Anual de la Academia de Ciencias Administrativas, A.C. 2-5 mayo, San Luis Potosí.
http://hdl.handle.net/11117/2150
spa
Congreso Anual de la Academia de Ciencias Administrativas, A.C.;X
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
México
Academia de Ciencias Administrativas A.C.
oai:rei.iteso.mx:11117/21352020-02-12T06:48:21Zcom_11117_1299com_11117_560col_11117_1469col_11117_561
Metodología de diagnóstico para identificar los requerimientos de una implementación de ITIL
Ortiz-Cantú, Sara J.
Ruiz-Sahagún, Andrés
Ortega-Guzmán, Víctor H.
Fernández-Larios, Óscar F.
Information Technology Service Management
Tecnologías de la Información y la Comunicación TIC
ITSM
ITIL
Implementación
Metodología de Diagnóstico
Este documento presenta una metodología de diagnóstico para identificar los requerimientos de una implementación de ITILv2, incluyendo el grado de conocimiento sobre los conceptos, la organización del departamento de tecnología de información, así como la definición de roles y responsabilidades orientadas al servicio. Para lograrlo se incluyen los casos de dos organizaciones en las cuales se llevó a cabo la metodología, los cuestionarios desarrollados así como las conclusiones de los mismos.
2015-06-22T16:51:15Z
2015-06-22T16:51:15Z
2010
info:eu-repo/semantics/conferencePaper
Ortiz-Cantú, S.J.; Ruiz-Sahagún, A.; Ortega-Guzmán, V.H. yFernández-Larios, Ó.F. (2010). Metodología de diagnóstico para identificar los requerimientos de una implementación de ITIL. Congreso Internacional de Sistemas de Innovación para la Competitividad.
http://hdl.handle.net/11117/2135
spa
Congreso Internacional de Sistemas de Innovación para la Competitividad;2010
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
SINNCO
oai:rei.iteso.mx:11117/5772020-02-12T06:48:27Zcom_11117_560col_11117_561
Applications of Space Mapping Optimization Technology to Filter Design
Rayas-Sánchez, José E.
Bandler, John W.
Bakr, Mohamed H.
Cheng, Qingsha S.
Ismail, Mostafa A.
Space Mapping
Filter Design
Expanded Space Mapping Design Framework (ESMDF)
Microwave Circuits
Electromagnetic Based Design
One of the frontiers that remains in the optimization of large engineering systems is the successful application of optimization
procedures in problems where direct optimization is not practical. The recent exploitation of surrogates in conjunction with “true”
models, the development of artificial neural network approaches to device modeling and the implementation of space mapping are
attempts to address this issue.
Our original “Space Mapping” concept, first conceived in 1993, and the subsequent Aggressive Space Mapping approach to
engineering design optimization will be discussed, along with new variations. Aggressive space mapping optimization closely follows
the traditional experience and intuition of designers. It has been amply demonstrated as a very natural and flexible way of
systematically optimizing microwave filters.
Space mapping optimization intelligently links companion “coarse” and “fine” models of different complexities, e.g., full-wave
electromagnetic simulations and empirical circuit-theory based simulations, to accelerate iterative design optimization of engineering
structures. New trust region space mapping optimization algorithms will be mentioned.
We briefly review the Expanded Space Mapping Design Framework (ESMDF) concept in which we allow preassigned parameters, not
used in optimization, to change in some components of the coarse model. Other recent developments include the introduction of the
object oriented SMX system to facilitate implementation of our algorithms in conjunction with certain commercial simulators.
Extensive filter design examples complement the presentation.
2013-05-20T19:37:38Z
2013-05-20T19:37:38Z
2001-05
info:eu-repo/semantics/conferencePaper
J. W. Bandler, M. H. Bakr, Q. S. Cheng, M. A. Ismail and J. E. Rayas-Sánchez, “Applications of space mapping optimization technology to filter design,” in IEEE MTT-S Int. Microwave Symp. Workshop Notes and Short Courses, Phoenix, AZ, May 2001.
http://hdl.handle.net/11117/577
eng
IEEE MTT-S International Microwave Symposium;2001
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE MTT-S International Microwave Symposium
oai:rei.iteso.mx:11117/59982020-02-12T06:47:48Zcom_11117_560col_11117_561
A Programmable CMOS Voltage Controlled Ring Oscillator for Radio-Frequency Diathermy On-chip Circuit
Corres-Matamoros, Antonio
Martínez-Guerrero, Esteban
Rayas-Sánchez, José E.
Low-frequency Oscillator
Voltage-controlled Oscillator
Ring Oscillator
Radio-frequency Diathermy
RFD
In this work we present the design of a digitally controlled ring type oscillator in 0.5 μm CMOS technology for a low-cost and portable radio-frequency diathermy (RFD) device. The oscillator circuit is composed by a low frequency ring oscillator (LFRO), a voltage controlled ring oscillator (VCRO), and a logic control. The digital circuit generates an input signal for the LFO, which generates a voltage ramp that controls the oscillating output signal of the VCRO in the range of 100 KHz to 1 MHz. Simulation results show that the proposed circuit exhibits controllable output characteristics in the range of 100 KHz – 1 MHz, with low power consumption and low phase noise, making it suitable for a portable RFD device.
2019-08-29T20:15:23Z
2019-08-29T20:15:23Z
2017-06
info:eu-repo/semantics/article
A. Corres-Matamoros, E. Martínez-Guerrero and J. E. Rayas-Sanchez, "A programmable CMOS voltage controlled ring oscillator for radio-frequency diathermy on-chip circuit," 2017 International Caribbean Conference on Devices, Circuits and Systems (ICCDCS), Cozumel, 2017, pp. 65-68. doi: 10.1109/ICCDCS.2017.7959721
2165-3550
http://hdl.handle.net/11117/5998
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/31312020-02-12T06:55:42Zcom_11117_560col_11117_561
Reliable full-wave EM simulation of a single-layer SIW interconnect with transitions to microstrip lines
Rayas-Sánchez, José E.
Chávez-Hurtado, José L.
Brito-Brito, Zabdiel
Simulation Bounding Box
Meshing Scheme
SIW
Microstrip Line
Interconnect
EM Simulation
We present a procedure to obtain reliable EM responses for a substrate integrated waveguide (SIW) interconnect with microstrip line transitions. The procedure focuses on two COMSOL configuration settings: meshing sizes and simulation bounding box. Once both are properly configured, the implemented structure is tested by perturbing the simulation bounding box to assure it has no effect on the EM responses
2016-03-02T17:31:20Z
2016-03-02T17:31:20Z
2014-10
info:eu-repo/semantics/conferencePaper
Chávez-Hurtado, J.L.; Rayas-Sánchez,E. and Brito-Brito, Z. “Reliable full-wave EM simulation of a single-layer SIW interconnect with transitions to microstrip lines,” in COMSOL Conf., Boston, MA, Oct. 2014, pp. 1-5. (DOI: 10.13140/RG.2.1.2579.1445).
DOI: 10.13140/RG.2.1.2579.1445
http://hdl.handle.net/11117/3131
eng
COMSOL Conference;
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
COMSOL Conference
oai:rei.iteso.mx:11117/59962020-02-12T06:47:33Zcom_11117_560col_11117_561
Polynomial-based surrogate modeling of RF and microwave circuits in frequency domain exploiting the multinomial theorem
Rayas-Sánchez, José E.
Chávez-Hurtado, José L.
Surrogate Models
Multinomial Theorem
Polynomial
Microwave Circuits
A general formulation to develop EM-based polynomial surrogate models in frequency domain utilizing the multinomial theorem is presented in this paper. Our approach is especially suitable when the number of learning samples is very limited and no physics-based coarse model is available. We compare our methodology against other four surrogate modeling techniques: response surface modeling, support vector machines, generalized regression neural networks, and Kriging. Results confirm that our modeling approach has the best performance among these techniques when using a very small amount of learning base points on relatively small modeling regions. We illustrate our technique by developing a surrogate model for an SIW interconnect with transitions to microstrip lines, a dual band T-slot PIFA handset antenna, and a high-speed package interconnect. Examples are simulated on a commercially available 3D FEM simulator.
2019-08-29T20:01:44Z
2019-08-29T20:01:44Z
2016-12
info:eu-repo/semantics/article
J. L. Chávez-Hurtado and J. E. Rayas-Sánchez, "Polynomial-Based Surrogate Modeling of RF and Microwave Circuits in Frequency Domain Exploiting the Multinomial Theorem," in IEEE Transactions on Microwave Theory and Techniques, vol. 64, no. 12, pp. 4371-4381, Dec. 2016. doi: 10.1109/TMTT.2016.2623902
0018-9480
http://hdl.handle.net/11117/5996
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/27842020-02-12T06:50:16Zcom_11117_560col_11117_561
Impact of 3D EM model configuration on the direct optimization of microstrip structures
Brito-Brito, Zabdiel
Rayas-Sánchez, José E.
Cervantes-González, Juan C.
López, Carlos A.
Microstrip
Model Configuration
EM Simulation
Direct Optimization
We apply the classical Nelder-Mead optimization algorithm to a low fidelity EM model, using different mesh and bounding-box configurations. We demonstrate that the interaction of the coarse mesh with the bounding box size can determine whether the optimization is successful or not.
2016-01-12T17:45:21Z
2016-01-12T17:45:21Z
2013-10
info:eu-repo/semantics/conferencePaper
Brito-Brito, Z.; Rayas-Sánchez, J.E.; Cervantes-González, J.C. and López, C.A. (2013) “Impact of 3D EM model configuration on the direct optimization of microstrip structures,” in COMSOL Conf., Boston, MA, Oct. 2013, pp.1-5.
DOI: 10.13140/RG.2.1.3889.8641
http://hdl.handle.net/11117/2784
eng
COMSOL Conference;2013
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
COMSOL
oai:rei.iteso.mx:11117/5832020-02-12T07:06:12Zcom_11117_560col_11117_561
A linear inverse space mapping (LISM) algorithm to design linear and nonlinear RF and microwave circuits
Rayas-Sánchez, José E.
Lara-Rojo, Fernando
Martínez-Guerrero, Esteban
Algorithm Design and Analysis
Design Optimization
Microstrip
Microwave Circuits
Neural Networks
Optimization Methods
Piecewise Linear Techniques
Radio Frequency
Samarium
Time Domain Analysis
A linear inverse space-mapping (LISM) optimization algorithm for designing linear and nonlinear RF and microwave circuits is described in this paper. LISM is directly applicable to microwave circuits in the frequency- or time-domain transient state. The inverse space mapping (SM) used follows a piecewise linear formulation, avoiding the use of neural networks. A rigorous comparison between Broyden-based "direct" SM, neural inverse space mapping (NISM) and LISM is realized. LISM optimization outperforms the other two methods, and represents a significant simplification over NISM optimization. LISM is applied to several linear frequency-domain classical microstrip problems. The physical design of a set of CMOS inverters driving an electrically long microstrip line on FR4 illustrates LISM for nonlinear design.
2013-05-20T21:37:54Z
2013-05-20T21:37:54Z
2005-03
info:eu-repo/semantics/article
J.E. Rayas-Sánchez, F. Lara-Rojo and E. Martínez-Guerrero, “A linear inverse space mapping (LISM) algorithm to design linear and nonlinear RF and microwave circuits,” IEEE Trans. Microwave Theory Tech., vol. 53, pp. 960-968, Mar. 2005.
0018-9480
http://hdl.handle.net/11117/583
http://ieeexplore.ieee.org/xpl/articleDetails.jsp?arnumber=1406292
eng
IEEE Trans. Microwave Theory Tech.;53
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE
IEEE Trans. Microwave Theory Tech.;53
oai:rei.iteso.mx:11117/83842023-03-01T14:17:36Zcom_11117_560col_11117_561
An Early History of Optimization Technology for Automated Design of Microwave Circuits
Bandler, John W.
Rayas-Sánchez, José E.
Adjoint Sensitivities
Bayesian
Broyden
CAD
Cognition-driven Design
Design Centering
Electromagnetics-based Design
Empipe
FDTD
FEM
Huber
Microwave Design
MIMIC
Neural Networks
Nonlinear Modeling
Optimization
Space Mapping
Surrogate Modeling
TLM
Tolerance Optimization
Waveguide Filters
Yield-driven Design
MTT 70th Anniversary Special Issue
This paper outlines the early history of optimization technology for the design of microwave circuits—a personal journey filled with aspirations, academic contributions, and commercial innovations. Microwave engineers have evolved from being consumers of mathematical optimization algorithms to originators of exciting concepts and technologies that have spread far beyond the boundaries of microwaves. From the early days of simple direct search algorithms based on heuristic methods through gradient-based electromagnetic optimization to space mapping technology we arrive at today’s surrogate methodologies. Our path finally connects to today’s multi-physics, system-level, and measurement-based optimization challenges exploiting confined and feature-based surrogates, cognition-driven space mapping, Bayesian approaches, and more. Our story recognizes visionaries such as William J. Getsinger of the 1960s and Robert Pucel of the 1980s, and highlights a seminal decades-long collaboration with mathematician Kaj Madsen. We address not only academic contributions that provide proof of concept, but also indicate early formative milestones in the development of commercially competitive software specifically featuring optimization technology.
2023-01-09T22:47:06Z
2023-01-09T22:47:06Z
2023-01
info:eu-repo/semantics/article
J. W. Bandler and J. E. Rayas-Sánchez, “An early history of optimization technology for automated design of microwave circuits,” IEEE J. of Microwaves, vol. 3, no. 1, pp. 319-337, Jan. 2023.
2692-8388
https://hdl.handle.net/11117/8384
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/5732020-02-12T07:06:10Zcom_11117_560col_11117_561
Yield-driven electromagnetic optimization via space mapping-based neuromodels
Bandler, John W.
Rayas-Sánchez, José E.
Zhang, Qi J.
Neural Network Applications
Optimization Methods
Design Automation
Statistical Analysis
Yield Optimization
Design Centering
Microwave Circuits
Microstrip Filters
Neural Modeling
Neural Space Mapping (NSM)
Electromagnetic Based Optimization
Accurate yield optimization and statistical analysis of microwave components are crucial ingredients for manufacturability-driven designs in a time-to-market development environment. Yield optimization requires intensive simulations to cover the entire
statistic of possible outcomes of a given manufacturing process. Performing direct yield optimization using accurate full-wave electromagnetic simulations does not appear feasible. In this article, an efficient procedure to realize electromagnetics (EM) based yield optimization and statistical analysis of microwave structures using space mapping-based neuromodels is proposed. Our technique is illustrated by the EM-based statistical analysis and yield optimization of a high temperature superconducting (HTS) microstrip filter.
2013-05-20T18:51:45Z
2013-05-20T18:51:45Z
2002-01
info:eu-repo/semantics/article
J.W. Bandler, J.E. Rayas-Sánchez and Q.J. Zhang, “Yield-driven electromagnetic optimization via space mapping-based neuromodels,” Int. J. RF and Microwave CAE, vol. 12, pp. 79-89, Jan. 2002.
1096-4290
http://hdl.handle.net/11117/573
eng
Int. J. RF and Microwave CAE;12
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
Int. J. RF and Microwave CAE
oai:rei.iteso.mx:11117/27772020-02-12T07:10:48Zcom_11117_560col_11117_561
Robust Pose Control of Robot Manipulators Using Conformal Geometric Algebra
González-Jiménez, Luis E.
Carbajal-Espinosa, O.
Loukianov, Alexander
Bayro-Corrochano, Eduardo
Sliding Mode Control
Serial Manipulators
Conformal Geometric Algebra
A controller, based on sliding mode control, is proposed for the n-link robotic manipulator pose tracking problem. The point pair (a geometric entity expressed in geometric algebra) is used to represent position and orientation of the end-effector of a manipulator. This permits us to express the direct and differential kinematics of the endeffector of the manipulator in a simple and compact way. For the control, a sliding mode controller is designed with the following properties: robustness against perturbations and parameter variations, finite time convergence, and easy implementation. Finally, the application, of the proposed controller in a 6 DOF robotic manipulator is presented via simulation.
2016-01-11T20:16:11Z
2016-01-11T20:16:11Z
2014-02-15
info:eu-repo/semantics/article
González-Jiménez, L.E.; Carbajal-Espinosa, O.; Loukianov, A.; Bayro-Corrochano, E. (2014). Robust Pose Control of Robot Manipulators Using Conformal Geometric Algebra. In Advances in Applied Clifford Algebras.
0188-7009
DOI 10.1007/s00006-014-0448-2
http://hdl.handle.net/11117/2777
eng
Advances in Applied Clifford Algebras;
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Springer Basel
oai:rei.iteso.mx:11117/33252020-02-12T06:52:22Zcom_11117_560col_11117_561
Comparison Among Booth’s and Pekmestzi’s Algorithms for the Multiplication of Two Numbers
Rojas-Laguna, Roberto
Villalón-Turrubiates, Iván E.
Serrano-Arellano, Santiago
Alvarado-Méndez, Edgar
Estudillo-Ayala, Juan M.
Vite-Chávez, Osvaldo
Pekmestzi
Booth
Digital Multiplication
A comparison between two different methods of multiplication of two 8-bit numbers is presented. This methods are the Booth’s algorithm and the algorithm proposed by Kiamal Z. Pekmestzi [1]. The general objective is to show the benefits and the advantages obtained if it’s used one of this algorithms over the other. This multipliers have low circuit complexity permitting high-speed operations and the interconnections of the cells are regular. This is the reason why the results shown was obtained using VHDL realization on a FPGA XC4010XL by Xilinx.
2016-04-26T14:22:02Z
2016-04-26T14:22:02Z
2003
info:eu-repo/semantics/conferencePaper
Iván E. Villalón-Turrubiates et al., “Comparison Among Booth’s and Pekmestzi’s Algorithms for the Multiplication of Two Numbers”, en Proceedings of the International Conference on Devices, Circuits and Systems (CIDCSVER), Veracruz México, 2003.
http://hdl.handle.net/11117/3325
eng
International Conference on Devices, Circuits and Systems (CIDCSVER);
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Institute of Electrical and Electronics Engineers
oai:rei.iteso.mx:11117/62502021-09-06T16:00:07Zcom_11117_560col_11117_561
IoT Smart Parking System Based on the Visual-Aided Smart Vehicle Presence Sensor: SPIN-V
Luque-Vega, Luis F.
Michel-Torres, David A.
López-Neri, Emmanuel
Carlos-Mancilla, Miriam A.
González-Jiménez, Luis E.
sensing solution
smart city
smart parking system
smart vehicle presence sensor
Humanity is currently experiencing one of the short periods of transition thanks to novel sensing solutions for smart cities that bring the future to today. Overpopulation of cities demands the development of solid strategic plannings that uses infrastructure, innovation, and technology to adapt to rapid changes. To improve mobility in cities with a larger and larger vehicle fleet, a novel sensing solution that is the cornerstone of a smart parking system, the smart vehicular presence sensor (SPIN-V, in its Spanish abbreviation), is presented. The SPIN-V is composed of a small single-board computer, distance sensor, camera, LED indicator, buzzer, and battery and devoted to obtain the status of a parking space. This smart mobility project involves three main elements, namely the SPIN-V, a mobile application, and a monitoring center, working together to monitor, control, process, and display the parking space information in real-time to the drivers. In addition, the design and implementation of the three elements of the complete architecture are presented.
2020-06-15T19:40:36Z
2020-06-15T19:40:36Z
2020-03
info:eu-repo/semantics/article
Luque-Vega, L.F.; Michel-Torres, D.A.; Lopez-Neri, E.; Carlos-Mancilla, M.A.; González-Jiménez, L.E. IoT Smart Parking System Based on the Visual-Aided Smart Vehicle Presence Sensor: SPIN-V. Sensors (Basel). 2020;20(5):1476. doi:10.3390/s20051476
1424-8220
https://hdl.handle.net/11117/6250
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
MDPI
oai:rei.iteso.mx:11117/32342020-02-12T07:02:23Zcom_11117_560col_11117_561
Real-Time Reconstruction of Remote Sensing Imagery: Aggregation of Robust Regularization with Neural Computing
Shkvarko, Yuriy
Villalón-Turrubiates, Iván E.
Image Reconstruction
Regularization
Neural Networks
The robustified numerical technique for real-time sensor array reconstructive image processing is developed as required for remote sensing imaging with large scale array/synthesized array radars. The addressed technique is designed via performing the regularized robustification of the fused Bayesian-regularization imaging method aggregated with the efficient real-time numerical implementation scheme that employs the neural network computing.
2016-04-04T21:04:34Z
2016-04-04T21:04:34Z
2005
info:eu-repo/semantics/conferencePaper
Y. Shkvarko & I.E. Villalón-Turrubiate (2005), “Real-Time Reconstruction of Remote Sensing Imagery: Aggregation of Robust Regularization with Neural Computing”. Proceedings of the 17th International Association for Mathematics and Computers in Simulation (IMACS) World Congress, París, Francia.
http://hdl.handle.net/11117/3234
eng
IMACS;17h
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Association for Mathematics and Computers in Simulation
oai:rei.iteso.mx:11117/29132020-02-12T07:11:27Zcom_11117_560col_11117_561
A Family of Hybrid Space-Time Codes for MIMO Wireless Communications
Longoria-Gándara, Omar
Cortez-González, Joaquín
Parra-Michel, Ramón
Bazdresch-Sierra, Luis M.
Linear Dispersion Codes
Hybrid Space-time Codes
Correlated MIMO Channel
MIMO Systems
Sorted QR Decomposition
Hybrid MIMO space-time codes combine the benefits of spatial multiplexing with diversity gain to achieve both high spectral efficiency and link reliability. In this paper, we present a family of hybrid codes, known as LD STBC-VBLAST codes, along with a receiver architecture suitable for low-complexity hardware implementation. We show that, under Rayleigh fading, the performance of LD STBC-VBLAST codes is superior to other recently proposed hybrid codes. We also present a technique to derive, from a given propagation scenario, spatially correlated MIMO channel models adequate for space-time coding performance analysis. Using this technique, we evaluate the performance of LD STBC-VBLAST codes under several correlated channels.
2016-01-20T00:34:28Z
2016-01-20T00:34:28Z
2012-04
info:eu-repo/semantics/article
Bazdresch-Parada, M., Cortez-González, J., Longoria-Gándara, O., Parra-Michel, R., (2012). “A Family of Hybrid Space-Time Codes for MIMO Wireless Communications”. Journal of Applied Research and Technology 10(2). México: UNAM.
1665-6423
http://hdl.handle.net/11117/2913
eng
Journal of Applied Research and Technology;10(2)
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
UNAM
oai:rei.iteso.mx:11117/62222021-09-06T15:58:21Zcom_11117_560col_11117_561
Machine learning techniques and space mapping approaches to enhance signal and power integrity in high-speed links and power delivery networks
Rayas-Sánchez, José E.
Rangel-Patiño, Francisco E.
Mercado-Casillas, Benjamin
Leal-Romo, Felipe
Chávez-Hurtado, José L.
Broyden
DDR
DoE
Equalization
Ethernet
Eye Diagram
HSIO
Impedance Profile
Kriging
Parameter Extraction
PCIe
PDN
PHY
Post-silicon Validation
Power Integrity
SATA
Signal Integrity
SI-PI co-simulation
Space Mapping
Surrogate
System Margining
USB
Voltage Regulator
Enhancing signal integrity (SI) and reliability in modern computer platforms heavily depends on the post-silicon validation of high-speed input/output (HSIO) links, which implies a physical layer (PHY) tuning process where equalization techniques are employed. On the other hand, the interaction between SI and power delivery networks (PDN) is becoming crucial in the computer industry, imposing the need of computationally expensive models to also ensure power integrity (PI). In this paper, surrogate-based optimization (SBO) methods, including space mapping (SM), are applied to efficiently tune equalizers in HSIO links using lab measurements on industrial post-silicon validation platforms, speeding up the PHY tuning process while enhancing eye diagram margins. Two HSIO interfaces illustrate the proposed SBO/SM techniques: USB3 Gen 1 and SATA Gen 3. Additionally, a methodology based on parameter extraction is described to develop fast PDN lumped models for low-cost SI-PI co-simulation; a dual data rate (DDR) memory sub-system illustrates this methodology. Finally, we describe a surrogate modeling methodology for efficient PDN optimization, comparing several machine learning techniques; a PDN voltage regulator with dual power rail remote sensing illustrates this last methodology.
2020-05-18T23:53:13Z
2020-05-18T23:53:13Z
2020-02-26
info:eu-repo/semantics/conferencePaper
J. E. Rayas-Sánchez, F. E. Rangel-Patiño, B. Mercado-Casillas, F. Leal-Romo, and J. L. Chávez-Hurtado, Machine learning techniques and space mapping approaches to enhance signal and power integrity in high-speed links and power delivery networks. IEEE Latin American Symp. Circuits and Systems Dig. (LASCAS 2020), San Jose, Costa Rica, Feb. 2020, pp.1-4. http://dx.doi.org/10.1109/LASCAS45839.2020.9068994
978-1-7281-3428-4
2330-9954
https://hdl.handle.net/11117/6222
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/65752021-09-06T15:54:14Zcom_11117_560col_11117_561
Minimizing Routing Broadcast and Packet Loss in Wireless Ad-hoc Networks with a Cluster-Based Self-Organized Algorithm as MAC protocol
Balart-Sanchez, Francisco E.
Gutiérrez-Preciado, Luis F.
Olascuaga-Cabrera, Guadalupe
Redes Móviles Inalámbricas
Autoorganización
Ruteo
AODV
Self-Organization
EESOA
Ad-hoc Network
Clustering
Emergent Behavior
Stigmergy
WSON
One of the main issues of routing protocols on wireless ad-hoc networks is the energy consumed by the traffic generated in the route discovery and routing table construction and maintenance. To reduce such of amount messages, we propose to use a backbone structure which would control the network traffic flow in an energy-efficient manner. This paper proposes the implementation of the energy-efficient selforganized algorithm (EESOA) as Medium Access Control (MAC) protocol. Also, we extended the algorithm to address network segmentation by handling inter clusters connectivity. EESOA as MAC provide a backbone structure for wireless ad-hoc networks due to their cluster-based capabilities and robustness to topology changes. The encapsulation of EESOA on MAC provides a cross layer solution, agnostic to the routing protocol and wireless technology. To show the performance of this cross-layer solution, an implementation of a wireless ad-hoc network with AODV and EESOA as MAC protocol in the NS3 simulator is used. This simulation allows evaluating the performance of the AODV routingprotocoloverEESOAasMACprotocolcomparedagainst normal Ad-hoc MAC. Therefore, the use of routing protocol over a self-organized algorithm can obtain better results, in packet loss, network connectivity and node reachability.
2021-04-29T00:33:50Z
2021-04-29T00:33:50Z
2019-01
info:eu-repo/semantics/conferencePaper
F. E. Balart-Sanchez, L. F. Gutierrez-Preciado and G. Olascuaga-Cabrera, "Minimizing Routing Broadcast and Packet Loss in Wireless Ad-hoc Networks with a Cluster-Based Self-Organized Algorithm as MAC protocol", 2019 IEEE 9th Annual Computing and Communication Workshop and Conference (CCWC), Las Vegas, NV, USA, 2019, pp. 0499-0505.
https://hdl.handle.net/11117/6575
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/21542020-02-12T06:48:23Zcom_11117_1299com_11117_560col_11117_1469col_11117_561
Estructura de interfaz universitaria: estudio de caso
Ortiz-Cantú, Sara J.
Pedroza-Zapata, Álvaro R.
Tercera Misión
Estructura de Interfaz
Transferencia de Conomimiento
ITESO Programa Interdireccional de Gestión de la Innovación y la Tecnología (PROGINNT)
Gestión de la Innovación y la Tecnología
Vinculación Universidad Empresa
Se utiliza el marco de la tercera misión de las universidades (concepto que abarca las actividades relacionadas con la generación, uso, aplicación y explotación, fuera del ámbito académico, del conocimiento y de otras capacidades de las que disponen las universidades), para analizar la función de una unidad de interfaz universitaria como vínculo para crear y transferir las capacidades de conocimiento de una universidad privada con su entorno.
Aun cuando los resultados han sido relativamente satisfactorios, se han tenido algunas dificultades para alinear la investigación con las necesidades de la sociedad, así como una falta de cultura de las empresas, lo cual ha determinado la velocidad de avance de la estructura de interfaz universitaria. A pesar de ello, comparativamente con otras universidades de la región, se han obtenido reconocimientos por los avances y logros obtenidos.
2015-06-23T22:48:06Z
2015-06-23T22:48:06Z
2013-10
info:eu-repo/semantics/conferencePaper
Ortiz-Cantú, S.J. y Pedroza-Zapata, A.R. (2013). Estructura de interfaz universitaria: estudio de caso. XV Congreso Latino Iberoamericano de Gestión de la Tecnología. Porto, Portugal, 27-31 octubre.
http://hdl.handle.net/11117/2154
spa
Congreso Latino Iberoamericano de Gestión de la Tecnología;XV
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Asociación Latino-Iberoamericana de Gestión Tecnológica ALTEC
oai:rei.iteso.mx:11117/33072020-02-12T07:02:15Zcom_11117_560col_11117_561
Weighted Pixel Statistics for Multispectral Image Classification of Remote Sensing Signatures: Performance Study
Villalón-Turrubiates, Iván E.
Image Segmentation
Image Classification
Remote Sensing
Statistics
The extraction of remote sensing signatures from a particular geographical region allows the generation of electronic signature maps, which are the basis to create a high- resolution collection atlas processed in continuous discrete time. This can be achieved using a new multispectral image classification approach based on pixel statistics for the class description. This is referred to as the Weighted Pixel Statistics Method. This paper explores the effectiveness of this novel approach developed for supervised segmentation and classification of remote sensing signatures, with a comparison with the traditional Weighted Order Statistics Method. The extraction of remote sensing signatures from real-world high- resolution environmental remote sensing imagery is reported to probe the efficiency of the developed technique.
2016-04-21T19:21:56Z
2016-04-21T19:21:56Z
2008
info:eu-repo/semantics/conferencePaper
Ivan E. Villalon-Turrubiates, “Weighted Pixel Statistics for Multispectral Image Classification of Remote Sensing Signatures: Performance Study”, en Proceedings of the 5rd IEEE International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE), Ciudad de México, 2008, pp. 534-539.
978-1-4244-2498-6
http://hdl.handle.net/11117/3307
eng
IEEE International Conference on Electrical Engineering, Computing Science and Automatic Control (CCE);5rd
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Institute of Electrical and Electronics Engineers
oai:rei.iteso.mx:11117/59952020-02-12T06:47:43Zcom_11117_560col_11117_561
Polynomial-based surrogate modeling of microwave structures in frequency domain exploiting the multinomial theorem
Chávez-Hurtado, José L.
Rayas-Sánchez, José E.
Surrogate Modeling
Multinomial Theorem
Polynomial
RF and Microwave Modeling
We propose a methodology for developing EM-based polynomial surrogate models exploiting the multinomial theorem. Our methodology is compared against four EM surrogate modeling techniques: response surface modeling, support vector machines, generalized regression neural networks, and Kriging. Results show that the proposed polynomial surrogate modeling approach has the best performance among these techniques when using a very small amount of learning base points. The proposed methodology is illustrated by developing a surrogate model for a T-slot PIFA antenna simulated on a commercially available 3D FEM simulator.
2019-08-29T19:49:43Z
2019-08-29T19:49:43Z
2016-05
info:eu-repo/semantics/article
J. L. Chávez-Hurtado and J. E. Rayas-Sánchez, "Polynomial-based surrogate modeling of microwave structures in frequency domain exploiting the multinomial theorem," 2016 IEEE MTT-S International Microwave Symposium (IMS), San Francisco, CA, 2016, pp.1-3. doi: 10.1109/MWSYM.2016.7540398
0149-645X
http://hdl.handle.net/11117/5995
eng
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/60132020-02-12T06:47:01Zcom_11117_560col_11117_561
A Digital Predistortion Technique Based on a NARX Network to Linearize GaN Class F Power Amplifiers (poster)
Aguilar-Lobo, Lina M.
Reynoso-Hernandez
García-Osorio, Alberto
Loo-Yau, José R.
Ortega-Cisneros, Susana
Moreno, Pablo
Rayas-Sánchez, José E.
Reynoso-Hernández, Apolinar
PA Linearization
Long-term Memory Effects
NARX Network
Recurrent Neural Networks
Nonlinear Systems
Digital Predistortion
This work presents a novel Digital Predistortion (DPD) scheme based on a NARX network, suitable for linearizing power amplifiers (PAs). The NARX network is a Recurrent Neural Network (RNN) with embedded memory that allows efficient modeling of nonlinear systems. Its neural architecture is very effective to model long term dependencies, such as the typical memory effects of PAs. To demonstrate the feasibility of the NARX network as a DPD system, a GaN class F PA with two LTE signals with 5 MHz of bandwidth is used. Experimental results show a distortion correction better than 10 dB.
2019-08-30T20:08:39Z
2019-08-30T20:08:39Z
2014-08
info:eu-repo/semantics/conferencePoster
L.M. Aguilar-Lobo, A. Garcia-Osorio, J.R. Loo-Yau, S. Ortega-Cisneros, P. Moreno, J.E. Rayas-Sánchez, and A. Reynoso-Hernández, “A digital predistortion technique based on a NARX network to linearize GaN class F power amplifiers,” in IEEE Int. Midwest Symp. Circuits Syst., College Station, TX, Aug. 2014, poster.
978-1-4799-4134-6
http://hdl.handle.net/11117/6013
eng
IEEE International Midwest Symposium on Circuits and Systems;
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE
oai:rei.iteso.mx:11117/49562020-02-12T06:56:58Zcom_11117_560col_11117_561
Identification Model for Large Remote Sensing Datasets Applied to Environmental Analysis within Mexico
Villalón-Turrubiates, Iván E.
Image Classification
Image Processing
Multispectral
Remote Sensing
The classification procedure to identify remote sensing signatures from a particular geographical region can be achieved using an accurate identification model that is based on multispectral data and uses pixel statistics for the class description. This methodology is referred to as the Multispectral Identification Model. This paper presents this particular methodology applied to large remote sensing datasets (multispectral images obtained from the SPOT-5 satellite sensors) with the objective to perform environmental and land use analysis for regions within Mexico, taking advantage of high-performance computing techniques to improve the processing time and computational load. The results obtained uses real multispectral scenes (high- resolution optical images) to probe the efficiency of the classification technique.
2017-09-15T19:05:28Z
2017-09-15T19:05:28Z
2017-07
info:eu-repo/semantics/conferencePaper
Iván E. Villalón-Turrubiates, Identification Model for Large Remote Sensing Datasets Applied to Environmental Analysis within Mexico”, in Proceedings of the 2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS): International Cooperation for Global Awareness, Fort Worth Texas EE.UU., 2017, pp. 3019-3022.
978-1-5090-4951-6
http://hdl.handle.net/11117/4956
eng
2017 IEEE International Geoscience and Remote Sensing Symposium (IGARSS): International Cooperation for Global Awareness;
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Institute of Electrical and Electronics Engineers
oai:rei.iteso.mx:11117/5692020-02-12T06:45:20Zcom_11117_560col_11117_561
Neural Inverse Space Mapping EM-Optimization
Rayas-Sánchez, José E.
Bandler, John W.
Ismail, Mostafa A.
Zhang, Qi J.
Microwave Circuits
Electromagnetic Based Design
Space Mapping
Neural Networks
For the first time, we present Neural Inverse
Space Mapping (NISM) optimization for EM-based design of
microwave structures. The inverse of the mapping from the
fine to the coarse model parameter spaces is exploited for the
first time in a Space Mapping algorithm. NISM optimization
does not require: up-front EM simulations, multipoint
parameter extraction or frequency mapping. The inverse of
the mapping is approximated by a neural network whose
generalization performance is controlled through a network
growing strategy. We contrast our new algorithm with
Neural Space Mapping (NSM) optimization.
2013-05-20T17:32:45Z
2013-05-20T17:32:45Z
2001-05-23
info:eu-repo/semantics/conferencePaper
J. W. Bandler, M. A. Ismail, J. E. Rayas-Sánchez and Q. J. Zhang, “Neural inverse space mapping EM-optimization,” in IEEE MTT-S Int. Microwave Symp. Dig., Phoenix, AZ, May 2001, pp. 1007-1010. (ISSN: 0149-645X; P-ISBN: 0-7803-6538-0; INSPEC: 6999380; DOI: 10.1109/MWSYM.2001.967062)
http://hdl.handle.net/11117/569
eng
IEEE MTT-S International Microwave Symposium;2001
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE MTT-S International Microwave Symposium
oai:rei.iteso.mx:11117/32992020-02-12T06:51:43Zcom_11117_560col_11117_561
Classification Algorithm for Embedded Systems using High-Resolution Multispectral Data
Villalón-Turrubiates, Iván E.
Image Classification
Remote Sensing
Multispectral Data
Embedded Systems
The extraction of remote sensing signatures from a particular geographical region allows the generation of electronic signature maps, which are the basis to create a high-resolution collection atlas processed in discrete time. This can be achieved using an image classification approach based on pixel statistics for the class description, referred to as the multispectral pixel neighborhood method. This paper explores the effectiveness of this approach developed for supervised segmentation and classification of high- resolution remote sensing imagery using SPOT-5 data. Moreover, an analysis of the proposition for implementation as an embedded system is provided, to improve the processing time and reducing computational load, using a scheme based on hardware/software codesign techniques. Simulations are reported to probe the efficiency of the proposed technique.
2016-04-21T16:10:39Z
2016-04-21T16:10:39Z
2013-07
info:eu-repo/semantics/conferencePaper
Ivan E. Villalon-Turrubiates, “Classification Algorithm for Embedded Systems using High-Resolution Multispectral Data”, in Proceedings of the 2013 IEEE International Geoscience and Remote Sensing Symposium (IGARSS): Building a Sustainable Earth through Remote Sensing, Melbourne Australia, 2013, pp. 3582-3585.
978-1-4799-1114-1
http://hdl.handle.net/11117/3299
eng
Proceedings of the 2013 IEEE International Geoscience and Remote Sensing Symposium (IGARSS): Building a Sustainable Earth through Remote Sensing;
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Institute of Electrical and Electronics Engineers
oai:rei.iteso.mx:11117/5892020-02-12T06:51:13Zcom_11117_560col_11117_561
A linear inverse space mapping algorithm for microwave design in the frequency and transient domains
Rayas-Sánchez, José E.
Lara-Rojo, Fernando
Martínez-Guerrero, Esteban
Neural Networks
Optimizing Expensive Functions
RF and Microwave Design
Space Mapping
High-speed Digital Design
An inverse space mapping optimization
algorithm for designing linear and non-linear microwave
circuits is presented in this work for the first time. The
inverse space mapping follows a piece-wise linear
formulation, avoiding the use of neural networks.
Microwave circuits in the frequency domain or in the time
domain transient-state can be efficiently optimized by
applying this algorithm. We contrast our new algorithm
with Neural Inverse Space Mapping (NISM) optimization.
The physical design of a set of CMOS inverters driving an
electrically long microstrip line on FR4 illustrates our
algorithm.
2013-05-21T16:03:55Z
2013-05-21T16:03:55Z
2004-06
info:eu-repo/semantics/conferencePaper
J. E. Rayas-Sánchez, F. Lara-Rojo and E. Martínez-Guerrero, “A linear inverse space mapping algorithm for microwave design in the frequency and transient domains,” in IEEE MTT-S Int. Microwave Symp. Dig., Fort Worth, TX, Jun. 2004, pp. 1847-1850. (ISSN: 0149-645X; P-ISBN: 0-7803-8331-1; INSPEC: 8058109; DOI: 10.1109/MWSYM.2004.1338966)
http://hdl.handle.net/11117/589
eng
IEEE MTT-S International Microwave Symposium;2004
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE MTT-S International Microwave Symposium
oai:rei.iteso.mx:11117/32982020-02-12T06:51:44Zcom_11117_560col_11117_561
Satellite Measurements of the Angstrom Exponent using an Innovative Mathematical Method to Identify Seasonal Aerosols
Faus-Landeros, Gloria E.
Celarier, Edward A.
Villalón-Turrubiates, Iván E.
Satellite Measurements
Photometry
Remote Sensing
Seasonal Aerosols
Angstrom Exponent
The remote sensing methods for understanding physical phenomena are being used since the last 50 years. Satellite- based sensors and ground-based sun photometers provides quantitative and qualitative knowledge about the composition of elements within the Earth’s atmosphere. One actual problem is the changes on the climate of different regions of the Earth; one of them is related to aerosol climate forcing. Improvement in measurement-based systems is necessary to identify remaining issues and improve quantification of aerosol effects on climate. Also the improvement in modeling is necessary to confidently extend estimates of forcing to prior times and to project future emissions. Achieving these capabilities will require a synergistic approach between observational systems and modeling. This paper describes how the study and analysis of satellite-based and ground-based measurements can be used to develop an innovative method, based in the existent methods to calculate some optical properties that will help in characterization of the dominant temporal aerosols found in and around the city of Guadalajara in Mexico, based on previous algorithms. The quantifiable knowledge about the temporal and regional aerosols’ optical properties will contribute to future investigations related to their quantitative effects on atmospheric processes in this region.
2016-04-21T15:58:30Z
2016-04-21T15:58:30Z
2013-07
info:eu-repo/semantics/conferencePaper
Ivan E. Villalon-Turrubiates, Gloria E. Faus-Landeros y Edward A. Celarier, “Satellite Measurements of the Angstrom Exponent using an Innovative Mathematical Method to Identify Seasonal Aerosols”, in Proceedings of the 2013 IEEE International Geoscience and Remote Sensing Symposium (IGARSS): Building a Sustainable Earth through Remote Sensing, Melbourne Australia, 2013, pp. 589-592.
978-1-4799-1114-1
http://hdl.handle.net/11117/3298
eng
Proceedings of the 2013 IEEE International Geoscience and Remote Sensing Symposium (IGARSS): Building a Sustainable Earth through Remote Sensing;
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-2.5-MX.pdf
Institute of Electrical and Electronics Engineers
oai:rei.iteso.mx:11117/6202020-02-12T06:54:33Zcom_11117_560col_11117_561
EM simulation of a low-pass filter based on a microstrip defected ground structure
Rayas-Sánchez, José E.
Aguilar-Torrentera, Jorge
Brito-Brito, Zabdiel
Cervantes-González, J. C.
López, Carlos A.
COMSOL
Microstrip Structure
Defected Ground Structure
Radiation Loss
We perform EM simulations of a lowpass microstrip filter consisting of a crossjunction open stub and two unit sections implemented as defected ground structures (DGS). The defect introduced by unit sections corresponds to an etched lattice on the copper backside ground plane. The filter presents wide and deep attenuation characteristics in the stopband. Different model implementations were carried out with the aim at evaluating the computational costs versus accuracy.
Simulations of a high-fidelity model are in good agreement with experimental data reported in a previous paper. COMSOL simulation settings, enclosing box, computational costs, and simulation times for the considered models are provided.
2013-05-21T19:15:11Z
2013-05-21T19:15:11Z
2012-10
info:eu-repo/semantics/conferencePaper
J. E. Rayas-Sánchez, J. Aguilar-Torrentera, Z. Brito-Brito, J. C. Cervantes-González, and C. A. López, “EM simulation of a low-pass filter based on a microstrip defected ground structure,” in COMSOL Conf., Boston, MA, Oct. 2012, pp. 1-6.
http://hdl.handle.net/11117/620
eng
COMSOL Conference;2012
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
COMSOL Conference
oai:rei.iteso.mx:11117/6032020-02-12T06:53:40Zcom_11117_560col_11117_561
EM-based optimization of a single layer SIW with microstrip transitions using linear output space mapping
Rayas-Sánchez, José E.
Jasso-Urzúa, Jorge A.
Electromagnetic Based Optimization
High-speed Interconnects
Space Mapping
Surrogate Modeling
Substrate Integrated Waveguide (SIW)
A computationally efficient linear output space
mapping technique is proposed in this work to optimize
single-layer SIW interconnects with microstrip transitions
using full-wave electromagnetic simulators. The initial design
of the SIW structure is obtained from empirical equations. A
very low-resolution EM model with solid walls (grooves) and
lossless metals is exploited as an efficient surrogate for direct
EM optimization. The surrogate model is enhanced by
developing an output linear mapping over a large region of
interest, centered at the optimal coarse model solution. The
enhanced interpolated surrogate is re-optimized to find the
optimal transition. An excellent match is obtained between
the original fine model and the enhanced surrogate model at
the optimal solution found. The proposed technique is
illustrated by designing a 10-50 GHz SIW interconnect with
microstrip transitions on a standard FR4-based substrate.
2013-05-21T17:57:18Z
2013-05-21T17:57:18Z
2009-06
info:eu-repo/semantics/conferencePaper
J. E. Rayas-Sánchez and J. A. Jasso-Urzúa, “EM-based optimization of a single layer SIW with microstrip transitions using linear output space mapping,” in IEEE MTT-S Int. Microwave Symp. Dig., Boston, MA, Jun. 2009, pp. 525-528. (ISSN: 0149-645X; E-ISBN: 978-1-4244-2804-5; P-ISBN: 978-1-4244-2803-8; INSPEC: 10788740; DOI: 10.1109/MWSYM.2009.5165749)
http://hdl.handle.net/11117/603
eng
IEEE MTT-S International Microwave Symposium;2009
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE MTT-S International Microwave Symposium
oai:rei.iteso.mx:11117/6052020-02-12T06:53:42Zcom_11117_560col_11117_561
Design of reusable CMOS OTAs using CAD tools
Cháves-Hurtado, J. L.
Martínez-Guerrero, Esteban
Rayas-Sánchez, José E.
FDFC OTA with CMFB
Design Automation
Circuit Optimization
Analog Cells
In this paper an automation tool is proposed for OTA
designs. The core of the tool is a combination of a mathematical
tool and a circuit simulator. The automation tool contains four
libraries: OTA topologies, technology parameters, performance
limits and design constraints. Design of typical OTA topologies
can be implemented in three fabrication technologies. The user
introduces OTA specifications and the automation tool looks for
the best OTA structure considering the cheapest fabrication
technology available in the library, and delivers a sized circuit
that fulfills design specifications. Our automation tool is
illustrated by a complete design flow of an FDFC with CMFB
OTA in AMIS 0.5 m CMOS technology.
2013-05-21T17:57:31Z
2013-05-21T17:57:31Z
2009-08
info:eu-repo/semantics/conferencePaper
J. L. Chávez-Hurtado, E. Martínez-Guerrero and J. E. Rayas-Sánchez, “Design of reusable CMOS OTAs using CAD tools,” in IEEE Int. Midwest Symp. Circuits and Systems (MWSCAS 2009), Cancun, Mexico, Aug. 2009, pp. 228-231. (ISSN: 1548-3746; E-ISBN: 978-1-4244-4480-9; P-ISBN: 978-1-4244-4479-3; INSPEC: 10868803; DOI: 10.1109/MWSCAS.2009.5236110)
http://hdl.handle.net/11117/605
eng
IEEE Int. Midwest Symp. Circuits and Systems (MWSCAS);2009
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE Int. Midwest Symp. Circuits and Systems
oai:rei.iteso.mx:11117/14112020-02-12T06:54:57Zcom_11117_560col_11117_561
Realizations of Space Mapping based neuromodels of microwave components
Bandler, John W.
Rayas-Sánchez, José E.
Zhang, Qi J.
Wang, F.
Microwave Components
Neural Modeling
Space Mapping
CAD
RF
Artificial Neural Networks (ANN)
Artificial Neural Networks (ANN) are suitable in modeling high-dimensional and highly nonlinear elements, such as those found in the microwave arena. In modeling microwave components, the learning data is obtained from a detailed or “fine” model (typically an EM simulator), which is accurate but slow to evaluate. This is aggravated because simulations are needed for many combinations of input parameter values. This is the main drawback of conventional ANN modeling. We use available equivalent circuits or “coarse” models to overcome this limitation.
In the Space Mapping (SM) based neuromodeling techniques an ANN is used to implement a suitable mapping from the fine to the coarse input space. The implicit knowledge in the coarse model not only allows us to decrease significantly the number of learning points needed, but also to reduce the complexity of the ANN and to improve the generalization performance. We present novel realizations of SM based neuromodels of practical passive components using commercial software. An SM-based neuromodel of a microstrip right angle bend is developed using NeuroModeler, and entered into HP ADS as a library component through an ADS plug-in module.
2014-08-25T19:11:00Z
2014-08-25T19:11:00Z
2000-04
info:eu-repo/semantics/conferencePaper
Bandler, J.W; Rayas-Sánchez, J.E; Wang, F. and Zhang, Q.J. (2000) “Realizations of Space Mapping based neuromodels of microwave components,” in AP2000 Millennium Conf. on Antennas & Propagation, Davos, Switzerland, Apr., vol. 1, pp. 460.
http://hdl.handle.net/11117/1411
eng
AP2000 Millennium Conf. on Antennas & Propagation;
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
AP2000 Millennium Conf. on Antennas & Propagation
oai:rei.iteso.mx:11117/21372020-02-12T07:10:36Zcom_11117_1299com_11117_560col_11117_1469col_11117_561
Gestión estratégica de la tecnología en el predesarrollo de nuevos productos
Ortiz-Cantú, Sara J.
Pedroza-Zapata, Álvaro R.
Gestión de la Innovación y la Tecnología
Empresas
Desarrollo de Nuevos Productos
Fuzzy Front End FFE
Frente Difuso
Estrategia Tecnológica
La innovación es el motor más importante para la prosperidad de las empresas. Por ello estas deben tener una estrategia definida
para el desarrollo de nuevos productos y su estructura organizacional claramente alineada a una cultura de innovación. En
este trabajo se propone una herramienta aplicable en el frente difuso (Fuzzy Front End (FFE)), previo al desarrollo formal de los
nuevos productos. El método que aquí proponemos parte del establecimiento de frentes tecnológicos derivados de la estrategia
de negocios y tecnológica de la empresa. Para cada uno de ellos se utilizan mapas de posición tecnológica relativa del negocio
en relación a los competidores y al conocimiento científico y tecnológico disponible. A partir de la posición tecnológica
relativa de la empresa se determina la brecha en relación a la posición deseada. Para disminuirla, se establecen proyectos de adquisición
de conocimiento tecnológico apoyados en el modelo de inteligencia competitiva: de mercado y vigilancia tecnológica.
Se provee un ejemplo relacionado con la industria química.
2015-06-22T18:22:03Z
2015-06-22T18:22:03Z
2008-01
info:eu-repo/semantics/article
Ortiz-Cantú, S.J. y Pedroza-Zapata, Á.R. (2008) Gestión estratégica de la tecnología en el predesarrollo de nuevos productos. Journal of Technology Management & Innovation, 3(3).
07182724
http://hdl.handle.net/11117/2137
spa
Journal of Technology Management & Innovation;3(3)
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
JOTMI Research Group
oai:rei.iteso.mx:11117/6002020-02-12T06:53:37Zcom_11117_560col_11117_561
Fast parametric models for EM design using neural networks and space mapping
Rayas-Sánchez, José E.
Zhang, Qi J.
Linear-Input Neural-Output Space Mapping (LINO-SM)
Electromagnetic Based Design
Neural Networks
Space Mapping
- Brief introduction to ANNs
- EM-based statistical analysis
- Input Space Mapping
- Linear-Input Neural-Output Space Mapping (LINO-SM)
- LINO-SM approach to yield estimation
- Constrained Broyden-Based Space Mapping
- Training the Output Neuromapping
- Example
- Conclusions
2013-05-21T17:57:02Z
2013-05-21T17:57:02Z
2008-06
info:eu-repo/semantics/conferencePaper
http://hdl.handle.net/11117/600
eng
IEEE MTT-S Int. Microwave Symp. Workshop Notes and Short Courses;2008
http://quijote.biblio.iteso.mx/licencias/CC-BY-NC-ND-2.5-MX.pdf
IEEE MTT-S Int. Microwave Symp. Workshop Notes and Short Courses
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