In the present work, the optimal determination of the constant k of ridge regression (RR) model was developed, since this method of regression permit to reduce the multicollinearity problem and it is a one advantage that takes the ridge regression model over ordinary least square (OLS). The optimal constant k was developed by some technique derived from intelligent systems (genetic algorithm) and some statistics techniques. In this paper we present a comparison between these two methodologies for finding the optimal constant k since this constant givesless variance, giving stability to the estimate coefficients and reduce the multicollinearity problem. The results analyzed by the statistical methods, showed that MSR and R2 have very good performance but theVIF's are greater than genetic algorithm (GA) and theGA reduces the VIF's but reduces R2 and increment the MSR.
{"title":"Optimal Determination of K Constant of Ridge Regression Using a Simple Genetic Algorithm","authors":"R.J. Praga-Alejo, L.M. Torres-Trevio, M.R. Pia-Monarrez","doi":"10.1109/CERMA.2008.77","DOIUrl":"https://doi.org/10.1109/CERMA.2008.77","url":null,"abstract":"In the present work, the optimal determination of the constant k of ridge regression (RR) model was developed, since this method of regression permit to reduce the multicollinearity problem and it is a one advantage that takes the ridge regression model over ordinary least square (OLS). The optimal constant k was developed by some technique derived from intelligent systems (genetic algorithm) and some statistics techniques. In this paper we present a comparison between these two methodologies for finding the optimal constant k since this constant givesless variance, giving stability to the estimate coefficients and reduce the multicollinearity problem. The results analyzed by the statistical methods, showed that MSR and R2 have very good performance but theVIF's are greater than genetic algorithm (GA) and theGA reduces the VIF's but reduces R2 and increment the MSR.","PeriodicalId":126172,"journal":{"name":"2008 Electronics, Robotics and Automotive Mechanics Conference (CERMA '08)","volume":"120 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123276525","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Romero Herrera Rodolfo, Francisco J. Gallegos Funes, Laura Méndez Segundo, rromeroh
This paper presents the design and development of a virtual pet, as well as the results obtained after its implementation. The described pet takes part of an artificial life system which includes affective computing, evolutionary computing, artificial neural networks, cellular automata and three dimensional modelled and animation. All of these allow the origin of an animated pet, whose emotional capacities, reproduction, learning and coexistence are unfolded on a three-dimensional environment, inside of a system which, in addition, provides an interface to the user for interpreting the petpsilas owner role, providing him the necessary cares for the petpsilas survival.
{"title":"Design & Development of a Virtual Pet","authors":"Romero Herrera Rodolfo, Francisco J. Gallegos Funes, Laura Méndez Segundo, rromeroh","doi":"10.1109/CERMA.2008.88","DOIUrl":"https://doi.org/10.1109/CERMA.2008.88","url":null,"abstract":"This paper presents the design and development of a virtual pet, as well as the results obtained after its implementation. The described pet takes part of an artificial life system which includes affective computing, evolutionary computing, artificial neural networks, cellular automata and three dimensional modelled and animation. All of these allow the origin of an animated pet, whose emotional capacities, reproduction, learning and coexistence are unfolded on a three-dimensional environment, inside of a system which, in addition, provides an interface to the user for interpreting the petpsilas owner role, providing him the necessary cares for the petpsilas survival.","PeriodicalId":126172,"journal":{"name":"2008 Electronics, Robotics and Automotive Mechanics Conference (CERMA '08)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123527485","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Robotic lighter-than-air vehicles (type of unanimated air vehicle UAV), provide a promissory strategic platform for the transport, exploration and surveillance. This paper presents an approach to the control of a small sized airship in cruise flight phase; specifically, non-linear control by extended linearization is considered. In order to make this control, a study of the dynamic model and some hypothesis for its reduction are presented. These reduced models enable to develop the control laws and the stabilization of the aerodynamic speed, altitude and heading of the airship. A technique of dynamical decoupling is considered in order to have a more stable altitude when the airship turns. Tests in simulation were made.
{"title":"Nonlinear Control of the Airship Cruise Flight Phase with Dynamical Decoupling","authors":"L. Solaque, Z. Pinzón, M. Duque","doi":"10.1109/CERMA.2008.53","DOIUrl":"https://doi.org/10.1109/CERMA.2008.53","url":null,"abstract":"Robotic lighter-than-air vehicles (type of unanimated air vehicle UAV), provide a promissory strategic platform for the transport, exploration and surveillance. This paper presents an approach to the control of a small sized airship in cruise flight phase; specifically, non-linear control by extended linearization is considered. In order to make this control, a study of the dynamic model and some hypothesis for its reduction are presented. These reduced models enable to develop the control laws and the stabilization of the aerodynamic speed, altitude and heading of the airship. A technique of dynamical decoupling is considered in order to have a more stable altitude when the airship turns. Tests in simulation were made.","PeriodicalId":126172,"journal":{"name":"2008 Electronics, Robotics and Automotive Mechanics Conference (CERMA '08)","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124198274","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper presents a steady state performance analysis carried out to study the behavior of a two VSC-based operating as a single-input single output HVDC link. The digital model of the HVDC link has been implemented and evaluated using PSCAD/EMTDC. The emphasis of this research work has been focused on evaluating the transference of active power from the rectifying station to the inverting station as well as the influence of the modulation index over the total harmonic distortion (THD).
{"title":"Steady State Performance Analysis of a VSC-Based HVDC Converter Stations Using PSCAD/EMTDC","authors":"E. Vasquez-Mortera, E. Moreno-Goytia","doi":"10.1109/CERMA.2008.104","DOIUrl":"https://doi.org/10.1109/CERMA.2008.104","url":null,"abstract":"This paper presents a steady state performance analysis carried out to study the behavior of a two VSC-based operating as a single-input single output HVDC link. The digital model of the HVDC link has been implemented and evaluated using PSCAD/EMTDC. The emphasis of this research work has been focused on evaluating the transference of active power from the rectifying station to the inverting station as well as the influence of the modulation index over the total harmonic distortion (THD).","PeriodicalId":126172,"journal":{"name":"2008 Electronics, Robotics and Automotive Mechanics Conference (CERMA '08)","volume":"166 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128226264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
This paper shows the results obtained when applying a learning strategy by using a free software, specifically Scilab, in the subjects of communication systems in the 8th and 9th semesters in the electronics degree program, of the technology department at the Universidad Pedagogica Nacional during the second term in 2007 and the first term in 2008. The implemented product is a didactic support handbook that includes the thematics that are developed in this field with a special profile and allows, with a direction to teachers and students, the creation of learning environments in the area of communication systems.
{"title":"Scilab as a Tool to Increase Learning in Courses of Communication Systems","authors":"J.W.R. Cano, Mateo Ospina","doi":"10.1109/CERMA.2008.15","DOIUrl":"https://doi.org/10.1109/CERMA.2008.15","url":null,"abstract":"This paper shows the results obtained when applying a learning strategy by using a free software, specifically Scilab, in the subjects of communication systems in the 8th and 9th semesters in the electronics degree program, of the technology department at the Universidad Pedagogica Nacional during the second term in 2007 and the first term in 2008. The implemented product is a didactic support handbook that includes the thematics that are developed in this field with a special profile and allows, with a direction to teachers and students, the creation of learning environments in the area of communication systems.","PeriodicalId":126172,"journal":{"name":"2008 Electronics, Robotics and Automotive Mechanics Conference (CERMA '08)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128574264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The aim of this work is to show the computational cost of implementing an conversion algorithm of Bayer format to RGB format by the method of bilinear interpolation, taking into consideration the correlation. This study demonstrates that in some applications the converter is not necessary, as in the case of real time tracking of different species, particularly in the subtraction and blurring of images. In the tracking of animals, timing can be critical.
{"title":"Property of Images in Bayer Formats in the Digital Processing of Images","authors":"C. Ramirez, F.J. Mora Mas, J. Enseat","doi":"10.1109/CERMA.2008.9","DOIUrl":"https://doi.org/10.1109/CERMA.2008.9","url":null,"abstract":"The aim of this work is to show the computational cost of implementing an conversion algorithm of Bayer format to RGB format by the method of bilinear interpolation, taking into consideration the correlation. This study demonstrates that in some applications the converter is not necessary, as in the case of real time tracking of different species, particularly in the subtraction and blurring of images. In the tracking of animals, timing can be critical.","PeriodicalId":126172,"journal":{"name":"2008 Electronics, Robotics and Automotive Mechanics Conference (CERMA '08)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126445288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
In order to obtain electronic devices based on PS/p-Si structure, we present a study the AC conductivity and Thermo-electrical behavior of Porous Silicon (PS) layers prepared by electrochemical etching in p-type silicon (p-Si) <100>substrates. The beginning is obtaining good electrical contacts on porous layer; for this reason, several Au/PS/Au junctions were electrically characterized to understand the transport mechanisms in porous surface and the temperature dependence in the porous properties studied, also the resistance-temperature characteristic of PS/p-Si thermistor device. Finally, we obtained the AC conductivity in modulo and phase; an electrical equivalent circuit was proposed to fit the experimental frequency response of the different samples.
{"title":"Electrical Transport and Impedance Analysis of Au/Porous Silicon Thin Films","authors":"F. Fonthal, C. Goyes, A. Rodroguez","doi":"10.1109/CERMA.2008.62","DOIUrl":"https://doi.org/10.1109/CERMA.2008.62","url":null,"abstract":"In order to obtain electronic devices based on PS/p-Si structure, we present a study the AC conductivity and Thermo-electrical behavior of Porous Silicon (PS) layers prepared by electrochemical etching in p-type silicon (p-Si) <100>substrates. The beginning is obtaining good electrical contacts on porous layer; for this reason, several Au/PS/Au junctions were electrically characterized to understand the transport mechanisms in porous surface and the temperature dependence in the porous properties studied, also the resistance-temperature characteristic of PS/p-Si thermistor device. Finally, we obtained the AC conductivity in modulo and phase; an electrical equivalent circuit was proposed to fit the experimental frequency response of the different samples.","PeriodicalId":126172,"journal":{"name":"2008 Electronics, Robotics and Automotive Mechanics Conference (CERMA '08)","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127977129","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Thanks to the permanent evolution of codecs for video and to the coding algorithms, every time with better performance, the television has found a new way of transmission across Internet. Taking into account these evolutions, the performance of the most commercial codecs based on MPEG-4 AVC/H.264 (RealNetworks, Apple) and VC-1 (Microsoft) standards is analyzed in this article. These codecs are the solutions nowadays for the diffusion of the television through IP network using video streaming technology. The codecs analysis is based on the evaluation of the main parameters that this technology requires. Also, the video streaming technology and its scheme is described.
{"title":"MPEG-4 AVC/H.264 and VC-1 Codecs Comparison Used in IPTV Video Streaming Technology","authors":"A. Acosta, M. García-Vázquez, J. Colores-Vargas","doi":"10.1109/CERMA.2008.93","DOIUrl":"https://doi.org/10.1109/CERMA.2008.93","url":null,"abstract":"Thanks to the permanent evolution of codecs for video and to the coding algorithms, every time with better performance, the television has found a new way of transmission across Internet. Taking into account these evolutions, the performance of the most commercial codecs based on MPEG-4 AVC/H.264 (RealNetworks, Apple) and VC-1 (Microsoft) standards is analyzed in this article. These codecs are the solutions nowadays for the diffusion of the television through IP network using video streaming technology. The codecs analysis is based on the evaluation of the main parameters that this technology requires. Also, the video streaming technology and its scheme is described.","PeriodicalId":126172,"journal":{"name":"2008 Electronics, Robotics and Automotive Mechanics Conference (CERMA '08)","volume":"254 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121207455","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
O. Estrada-Cruz, G. Gutiérrez-Alcaraz, J. Tovar-Hernández
Oligopolistic static equilibrium models are widely used in electricity market analysis. However, the repeated bidding process in real-life electricity markets calls for dynamic models. This paper formulates the classical Cournot model in a discrete-time linear system framework that permits close study of generation companiespsila dynamic decisions and their impacts on wholesale electricity markets. Network losses are also included.
{"title":"Discrete Time Cournot Model for Electricity Market Simulation","authors":"O. Estrada-Cruz, G. Gutiérrez-Alcaraz, J. Tovar-Hernández","doi":"10.1109/CERMA.2008.27","DOIUrl":"https://doi.org/10.1109/CERMA.2008.27","url":null,"abstract":"Oligopolistic static equilibrium models are widely used in electricity market analysis. However, the repeated bidding process in real-life electricity markets calls for dynamic models. This paper formulates the classical Cournot model in a discrete-time linear system framework that permits close study of generation companiespsila dynamic decisions and their impacts on wholesale electricity markets. Network losses are also included.","PeriodicalId":126172,"journal":{"name":"2008 Electronics, Robotics and Automotive Mechanics Conference (CERMA '08)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129067147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Since the Neural Network (NN) with a Genetic Algorithm (GA) as a complement; are good optimization tools, we compare its performance with the Response Surface Methodology (RSM) that is generally used in the optimization of the process, in this case welding process. For the data used in the comparison, the results show that NN plus GA and RSM have a good results and very well performance, for identify the optimal set of parameters to obtain amaximum response of the process.
{"title":"Optimization Welding Process Parameters through Response Surface, Neural Network and Genetic Algorithms","authors":"R.J. Praga-Alejo, L.M. Torres-Trevio, M.R. Pia-Monarrez","doi":"10.1109/CERMA.2008.70","DOIUrl":"https://doi.org/10.1109/CERMA.2008.70","url":null,"abstract":"Since the Neural Network (NN) with a Genetic Algorithm (GA) as a complement; are good optimization tools, we compare its performance with the Response Surface Methodology (RSM) that is generally used in the optimization of the process, in this case welding process. For the data used in the comparison, the results show that NN plus GA and RSM have a good results and very well performance, for identify the optimal set of parameters to obtain amaximum response of the process.","PeriodicalId":126172,"journal":{"name":"2008 Electronics, Robotics and Automotive Mechanics Conference (CERMA '08)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2008-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117129624","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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