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}
J. Gnecchi, L. F. Tirado, G. Campos, R. Ramirez, C. Gordillo
This paper presents the design and construction of a soil moisture sensor (ITM-01) with temperature compensation using a backpropagation neural network. To validate the sensor measurements, a series of experiments were conducted near the city of Atecuaro, Michoacan, Mexico (19deg35psila N, 101deg11psila W), in two different test sites. The soil contents were 67% clay, 17% lime and 16% sand. Measurements of the soil water content were obtained using a TDR soil moisture sensor, (6050X1 Trase System), and the sensor described in this work. The neural network was trained using data obtained from the gravimetric method. The parameter chosen to evaluate the performance of the sensor was the Sum of Squared Error (SSE) of the measurements compared to the gravimetric method. The results showed that the sensor ITM-01, yields volumetric water content measurements in agreement with gravimetric and TDR measurements. In particular for the data reported in this work, the ITM-01 sensor delivered measurements closer to gravimetric data compared to data obtained using the TDR sensor. Corn Crop: SSE TDR= 926, SSE ITM-01=372. Flat terrain: SSE TDR= 410, SSE ITM-01= 78.
{"title":"Design of a Soil Moisture Sensor with Temperature Compensation Using a Backpropagation Neural Network","authors":"J. Gnecchi, L. F. Tirado, G. Campos, R. Ramirez, C. Gordillo","doi":"10.1109/CERMA.2008.92","DOIUrl":"https://doi.org/10.1109/CERMA.2008.92","url":null,"abstract":"This paper presents the design and construction of a soil moisture sensor (ITM-01) with temperature compensation using a backpropagation neural network. To validate the sensor measurements, a series of experiments were conducted near the city of Atecuaro, Michoacan, Mexico (19deg35psila N, 101deg11psila W), in two different test sites. The soil contents were 67% clay, 17% lime and 16% sand. Measurements of the soil water content were obtained using a TDR soil moisture sensor, (6050X1 Trase System), and the sensor described in this work. The neural network was trained using data obtained from the gravimetric method. The parameter chosen to evaluate the performance of the sensor was the Sum of Squared Error (SSE) of the measurements compared to the gravimetric method. The results showed that the sensor ITM-01, yields volumetric water content measurements in agreement with gravimetric and TDR measurements. In particular for the data reported in this work, the ITM-01 sensor delivered measurements closer to gravimetric data compared to data obtained using the TDR sensor. Corn Crop: SSE TDR= 926, SSE ITM-01=372. Flat terrain: SSE TDR= 410, SSE ITM-01= 78.","PeriodicalId":126172,"journal":{"name":"2008 Electronics, Robotics and Automotive Mechanics Conference (CERMA '08)","volume":"95 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":"124668778","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 software metric working prototype to evaluate Java programmer's profiles. In order to automatically detect source code patterns, a Multi Layer Perceptron neural network is applied. Features determined from such patterns constitute the basis for systempsilas programmer profiling. Results presented here show that the proposed prototype is a confident approach for support in the software quality assurance process.
{"title":"Intelligent Java Analyzer","authors":"M. Aguero, G. Esperón, F. Madou, D. L. de Luise","doi":"10.1109/CERMA.2008.51","DOIUrl":"https://doi.org/10.1109/CERMA.2008.51","url":null,"abstract":"This paper presents a software metric working prototype to evaluate Java programmer's profiles. In order to automatically detect source code patterns, a Multi Layer Perceptron neural network is applied. Features determined from such patterns constitute the basis for systempsilas programmer profiling. Results presented here show that the proposed prototype is a confident approach for support in the software quality assurance process.","PeriodicalId":126172,"journal":{"name":"2008 Electronics, Robotics and Automotive Mechanics Conference (CERMA '08)","volume":"43 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":"125709314","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 the development of an intelligent wireless system to monitoring mechanical fault in electric power transmission lines under oscillating movement, collapse, overheating or short circuit faults in the cable; caused by natural or induced man effects. The system has a remote module hanging on a cable and a central operation module communicated via wireless. The remote module has data acquisition, is capable to add the location where is going to be installed with a GPS receiver (Global Position System), is capable to sensing temperature, electric current and acceleration of the cable; the last one is an integrate circuit based in MEMS technology (micro electromechanical system), all of these operations are controlled and processed with a microcontroller. The central operation module is connected to serial port in a personal computer. The user can survey the remote module, ask the historic stored data, assign an identification number and assign global positioning coordinates via wireless, with the system-user software created in LabVIEW.
{"title":"Intelligent Wireless System to Monitoring Mechanical Fault in Power Transmission Lines","authors":"J. Rodriguez, C. Tello","doi":"10.1109/CERMA.2008.96","DOIUrl":"https://doi.org/10.1109/CERMA.2008.96","url":null,"abstract":"This paper presents the development of an intelligent wireless system to monitoring mechanical fault in electric power transmission lines under oscillating movement, collapse, overheating or short circuit faults in the cable; caused by natural or induced man effects. The system has a remote module hanging on a cable and a central operation module communicated via wireless. The remote module has data acquisition, is capable to add the location where is going to be installed with a GPS receiver (Global Position System), is capable to sensing temperature, electric current and acceleration of the cable; the last one is an integrate circuit based in MEMS technology (micro electromechanical system), all of these operations are controlled and processed with a microcontroller. The central operation module is connected to serial port in a personal computer. The user can survey the remote module, ask the historic stored data, assign an identification number and assign global positioning coordinates via wireless, with the system-user software created in LabVIEW.","PeriodicalId":126172,"journal":{"name":"2008 Electronics, Robotics and Automotive Mechanics Conference (CERMA '08)","volume":"134 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":"124373628","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}
Indoor wireless communication takes interest, because the wires are cumbersome and generate less free space. For this type of communication, 2.4 Ghz is a widely used frequency among electronic equipments, mainly at home and industry. Patch antennas are very popular in wireless communications, specially at home and industry, because they are easy to design and easy to integrate with microwave integrated circuits. They have others advantages, such as: light weigh, little volume, low fabrication cost, etc. In this work, the prototype of a rectangular patch antenna designed for Wireless Fidelity, Wi-Fi, with linear polarization, is presented. On the base of this rectangular antenna, it was realized cuts and grooves in order to improve its gain. A comparison on their performance is also shown.
{"title":"Prototype of Patch Antenna for Wi-Fi Communication","authors":"M.T. Torres, J. G. Vera-Dimas, S. Koshevaya","doi":"10.1109/CERMA.2008.84","DOIUrl":"https://doi.org/10.1109/CERMA.2008.84","url":null,"abstract":"Indoor wireless communication takes interest, because the wires are cumbersome and generate less free space. For this type of communication, 2.4 Ghz is a widely used frequency among electronic equipments, mainly at home and industry. Patch antennas are very popular in wireless communications, specially at home and industry, because they are easy to design and easy to integrate with microwave integrated circuits. They have others advantages, such as: light weigh, little volume, low fabrication cost, etc. In this work, the prototype of a rectangular patch antenna designed for Wireless Fidelity, Wi-Fi, with linear polarization, is presented. On the base of this rectangular antenna, it was realized cuts and grooves in order to improve its gain. A comparison on their performance is also shown.","PeriodicalId":126172,"journal":{"name":"2008 Electronics, Robotics and Automotive Mechanics Conference (CERMA '08)","volume":"28 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":"133607628","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}
M.A. Aguilar-Torres, A. Arguelles-Cruz, C. Yáñez-Márquez
This document introduces the implementation of an industrial machine vision system developed in LabView, same that helps classify the quality of mayonnaise trays. The methodology and the algorithms used as well as the results are described here.
{"title":"A Real Time Artificial Vision Implementation for Quality Inspection of Industrial Products","authors":"M.A. Aguilar-Torres, A. Arguelles-Cruz, C. Yáñez-Márquez","doi":"10.1109/CERMA.2008.75","DOIUrl":"https://doi.org/10.1109/CERMA.2008.75","url":null,"abstract":"This document introduces the implementation of an industrial machine vision system developed in LabView, same that helps classify the quality of mayonnaise trays. The methodology and the algorithms used as well as the results are described here.","PeriodicalId":126172,"journal":{"name":"2008 Electronics, Robotics and Automotive Mechanics Conference (CERMA '08)","volume":"22 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":"116835615","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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