Pub Date : 2017-04-24DOI: 10.17230/INGCIENCIA.13.25.5
D. Arango, Ricardo Urrego, S. Rivera
A lo largo de este articulo se muestran simulaciones de posibles despachos economicos para un sistema con penetracion de energias renovables cuando hay variaciones de la velocidad del viento y de radiacion solar para diferentes horas del dia. Para ello se prueba y se valida una metodologia para minimizar el costo total del sistema a partir del uso del metodo de punto interior utilizado por la funcion fmincon de MatLab. Uno de los aportes de este articulo, es que se propone una adaptacion de las restricciones del sistema de potencia a la sintaxis de la funcion que requiere que estas restricciones sean lineales.
{"title":"Despacho económico en microredes con penetración de energía renovable usando algoritmo de punto interior y restricciones lineales","authors":"D. Arango, Ricardo Urrego, S. Rivera","doi":"10.17230/INGCIENCIA.13.25.5","DOIUrl":"https://doi.org/10.17230/INGCIENCIA.13.25.5","url":null,"abstract":"A lo largo de este articulo se muestran simulaciones de posibles despachos economicos para un sistema con penetracion de energias renovables cuando hay variaciones de la velocidad del viento y de radiacion solar para diferentes horas del dia. Para ello se prueba y se valida una metodologia para minimizar el costo total del sistema a partir del uso del metodo de punto interior utilizado por la funcion fmincon de MatLab. Uno de los aportes de este articulo, es que se propone una adaptacion de las restricciones del sistema de potencia a la sintaxis de la funcion que requiere que estas restricciones sean lineales.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"13 1","pages":"123-152"},"PeriodicalIF":0.0,"publicationDate":"2017-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43567155","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}
Pub Date : 2017-04-24DOI: 10.17230/INGCIENCIA.13.25.4
G. Parra, Abraham J. Arenas, Miladys R. Cogollo
En este trabajo se investiga la positividad y acotamineto de la solucion de un modelo epidemiologico estacional estocastico para el virus respiratorio sincitial (RSV ). La estocasticidad en el modelo se debe a entornos fisicos y sociales fluctuantes y se introduce perturbando el parametro de transmision de la enfermedad. Se demuestra la existencia y unicidad de la solucion positiva del modelo epidemiologico estacional estocastico, lo cual se requiere en el modelado de las poblaciones ya que todas las poblaciones deben ser positivos desde el punto de vista biologico. Adicionalmente, la positividad y la acotacion de las soluciones es importante para otros modelos no lineales que se presentan en las ciencias y la ingenieria. Las simulaciones numericas del modelo estocastico se realizan utilizando el esquema numerico de Milstein y se incluyen para apoyar los resultados analiticos.
{"title":"Positivity and Boundedness of Solutions for a Stochastic Seasonal Epidemiological Model for Respiratory Syncytial Virus (RSV)","authors":"G. Parra, Abraham J. Arenas, Miladys R. Cogollo","doi":"10.17230/INGCIENCIA.13.25.4","DOIUrl":"https://doi.org/10.17230/INGCIENCIA.13.25.4","url":null,"abstract":"En este trabajo se investiga la positividad y acotamineto de la solucion de un modelo epidemiologico estacional estocastico para el virus respiratorio sincitial (RSV ). La estocasticidad en el modelo se debe a entornos fisicos y sociales fluctuantes y se introduce perturbando el parametro de transmision de la enfermedad. Se demuestra la existencia y unicidad de la solucion positiva del modelo epidemiologico estacional estocastico, lo cual se requiere en el modelado de las poblaciones ya que todas las poblaciones deben ser positivos desde el punto de vista biologico. Adicionalmente, la positividad y la acotacion de las soluciones es importante para otros modelos no lineales que se presentan en las ciencias y la ingenieria. Las simulaciones numericas del modelo estocastico se realizan utilizando el esquema numerico de Milstein y se incluyen para apoyar los resultados analiticos.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"13 1","pages":"95-121"},"PeriodicalIF":0.0,"publicationDate":"2017-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41692176","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}
Pub Date : 2017-04-24DOI: 10.17230/INGCIENCIA.13.25.9
Ana Beatriz Acevedo, F. N. Z. Mejía
Assessment of the seismic vulnerability of the building stock of a region is a key issue for its seismic risk evaluation. Schools are an important building class as they gather a high number of people, they are important for the social development and they could be used as shelters after an emergency. This paper presents an assessment of the characteristics of 77 buildings from 28 schools of Medellin, Itagui and Sabaneta (Colombia). Each building is a reinforced concrete frame with masonry infill. Analyzed parameters include the number of stories, building height, ground floor area, height and plan irregularity, presence of short columns, walls materials, columns and walls dimensions, soil type, designed lateral load, level of maintenance, year of construction and presence of damage or retrofit intervention. The analysis of the schools characteristics represents useful information that could be used for the estimation of the vulnerability of this building class, as well as for its seismic risk assessment.
{"title":"Características estructurales de escuelas colombianas de hormigón reforzado con mampostería no reforzada","authors":"Ana Beatriz Acevedo, F. N. Z. Mejía","doi":"10.17230/INGCIENCIA.13.25.9","DOIUrl":"https://doi.org/10.17230/INGCIENCIA.13.25.9","url":null,"abstract":"Assessment of the seismic vulnerability of the building stock of a region is a key issue for its seismic risk evaluation. Schools are an important building class as they gather a high number of people, they are important for the social development and they could be used as shelters after an emergency. This paper presents an assessment of the characteristics of 77 buildings from 28 schools of Medellin, Itagui and Sabaneta (Colombia). Each building is a reinforced concrete frame with masonry infill. Analyzed parameters include the number of stories, building height, ground floor area, height and plan irregularity, presence of short columns, walls materials, columns and walls dimensions, soil type, designed lateral load, level of maintenance, year of construction and presence of damage or retrofit intervention. The analysis of the schools characteristics represents useful information that could be used for the estimation of the vulnerability of this building class, as well as for its seismic risk assessment.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"13 1","pages":"209-227"},"PeriodicalIF":0.0,"publicationDate":"2017-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17230/INGCIENCIA.13.25.9","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47023450","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}
Pub Date : 2017-04-24DOI: 10.17230/INGCIENCIA.13.25.3
Nathaly Solano-Pinzón, David Pinzón-Marroquín, W. J. Guerrero
This article studies the problem of locating surveillance cameras in the context of a public transportation system. A network of stops or stations is considered which is interconnected by a set of predetermined bus routes. The studied problem is to choose the set of stations to be monitored by cameras in order to simultaneously optimize two objectives: the expected number of crimes detected by the cameras, and the image quality of the entire surveillance system. Two mathematical models based on integer programming are proposed for this problem, considering multiple periods, budget constraints, and connectivity constraints which ensure that at least a surveillance camera is assigned to one station for each pair of directly connected stations. A comparison of the performance of the proposed mathematical models using a commercial optimizer is performed using a set of randomly generated instances with 20-200 stations. The computational results show the capability of the proposed mathematical models to find optimal solutions and the required computational resources.
{"title":"Modelos de localización de cámaras de vigilancia en una red de transporte público masivo","authors":"Nathaly Solano-Pinzón, David Pinzón-Marroquín, W. J. Guerrero","doi":"10.17230/INGCIENCIA.13.25.3","DOIUrl":"https://doi.org/10.17230/INGCIENCIA.13.25.3","url":null,"abstract":"This article studies the problem of locating surveillance cameras in the context of a public transportation system. A network of stops or stations is considered which is interconnected by a set of predetermined bus routes. The studied problem is to choose the set of stations to be monitored by cameras in order to simultaneously optimize two objectives: the expected number of crimes detected by the cameras, and the image quality of the entire surveillance system. Two mathematical models based on integer programming are proposed for this problem, considering multiple periods, budget constraints, and connectivity constraints which ensure that at least a surveillance camera is assigned to one station for each pair of directly connected stations. A comparison of the performance of the proposed mathematical models using a commercial optimizer is performed using a set of randomly generated instances with 20-200 stations. The computational results show the capability of the proposed mathematical models to find optimal solutions and the required computational resources.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"13 1","pages":"71-93"},"PeriodicalIF":0.0,"publicationDate":"2017-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44855021","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}
Pub Date : 2017-04-24DOI: 10.17230/INGCIENCIA.13.25.6
M. E. Fernández, G. Murillo, R. Vargas, D. P. Lara, J. Diosa
Using impedance spectroscopy (IS), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and infrared spectroscopy (IR) techniques to study the polymer electrolyte membranes based on poly(vinyl alcohol) (PVA) and hypophosphorous acid (H3 PO2) with different titanium oxide nanoparticles (TiO$_2$) concentrations. The polymer systems (1-x)(H3 PO2/ PVA) + xTiO2 were prepared using the sol-casting method and different weight percent of TiO2, x= 10.0%. The DSC results show that the glass transition for molar fraction P/OH = 0.3 appears around 75°C and for the samples doped with TiO2 around 35°C the melting point for all membranes appear around 175°C. The FTIR spectra show changes in the profiles of the absorption bands with the addition of H3 PO2 and the different concentrations of TiO2. The IS results show dielectric and conductivity relaxations as well as a change in DC ionic conductivity with the TiO$_2$ content. The order of the ionic conductivity is about 10-2 S/cm for 5.0% of TiO2. The TGA in the heating run shows water loss that is in agreement with de DC conductivity measurements.
{"title":"Improvement of proton-exchange membranes based on (1-x)(H3PO2/PVA)-xTiO2","authors":"M. E. Fernández, G. Murillo, R. Vargas, D. P. Lara, J. Diosa","doi":"10.17230/INGCIENCIA.13.25.6","DOIUrl":"https://doi.org/10.17230/INGCIENCIA.13.25.6","url":null,"abstract":"Using impedance spectroscopy (IS), differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), and infrared spectroscopy (IR) techniques to study the polymer electrolyte membranes based on poly(vinyl alcohol) (PVA) and hypophosphorous acid (H3 PO2) with different titanium oxide nanoparticles (TiO$_2$) concentrations. The polymer systems (1-x)(H3 PO2/ PVA) + xTiO2 were prepared using the sol-casting method and different weight percent of TiO2, x= 10.0%. The DSC results show that the glass transition for molar fraction P/OH = 0.3 appears around 75°C and for the samples doped with TiO2 around 35°C the melting point for all membranes appear around 175°C. The FTIR spectra show changes in the profiles of the absorption bands with the addition of H3 PO2 and the different concentrations of TiO2. The IS results show dielectric and conductivity relaxations as well as a change in DC ionic conductivity with the TiO$_2$ content. The order of the ionic conductivity is about 10-2 S/cm for 5.0% of TiO2. The TGA in the heating run shows water loss that is in agreement with de DC conductivity measurements.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"13 1","pages":"153-166"},"PeriodicalIF":0.0,"publicationDate":"2017-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45465543","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}
Pub Date : 2017-01-01DOI: 10.17230/INGCIENCIA.13.26.4
J. Rodríguez
espanolEste articulo presenta los resultados finales de una investigacion adelantada en el distrito de riego Usochicamocha del Departamento de Boyaca - Colombia, el cual enfrenta un problema a causa de la no devolucion y recoleccion de la totalidad de los envases y empaques vacios de plaguicidas que generan los agricultores. Debido a lo anterior, con la investigacion se propone una configuracion y funcionamiento de la red de logistica inversa (LI) para la recoleccion, acopio y disposicion final de los residuos de plaguicidas en dicha zona, para lo cual se desarrolla un modelo de programacion lineal entera mixta con el fin de definir tanto las cantidades a recolectar y transportar a disposicion final y evaluar la posibilidad de abrir nuevos centros de acopio. Los resultados del modelo matematico evidencian que, en promedio, se recolectan en cada finca 5 kg de residuos y que se envian 1106.58 kg a eliminacion segura y 1292.31 kg a reciclaje. EnglishThis paper presents the final results of an advance investigation in the Usochicamocha irrigation district of the Department of Boyaca - Colombia, which faces a problem because of the non - return and collection of al the empty packaging and packaging of pesticides that generate the farmers. Due to the above, the research proposes a configuration and operation of the reverse logistics network (LI) for the collection, collection and final disposal of pesticide residues in that area, for which a linear programming model was developed mixed in order to define both the quantities to be collected and transported to final disposal and to evaluate the possibility of opening new collection centers. The results of the mathematical model show that, on average, 5 kg of waste are collected on each farm and 1106.58 kg are sent to safe disposal and 1292.31 kg to be recycled.
本文介绍了在哥伦比亚Boyaca省Usochicamocha灌溉区进行的一项高级研究的最终结果，该灌溉区面临着一个问题，即农民生产的所有容器和空包装的农药都不能回收和收集。因此,调查拟配置和运行recoleccion logistica逆向(LI)网络,收集和处理该地区的农药残留结束,为此开展了一整个programacion线性混合模型以确定数量被收集和转移到处理结束,评估收集中心,奋力开拓的可能性。数学模型结果表明，平均每个农场收集5公斤垃圾，1106.58公斤用于安全处理，1292.31公斤用于回收。本文介绍了在哥伦比亚Boyaca省Usochicamocha灌溉区进行的初步调查的最后结果，该地区由于农民生产的农药的空包装和包装不归还和收集而面临问题。由于to the, the research向configuration政见and operation of the reverse logistics network (LI) for the collection,农药的collection and final . in that area, for which was a线性方案model发达,in order to define both the少量to be指导and transported to final . and the possibility of franciois new collection的centers。数学模型的结果表明，每个农场平均收集5公斤废物，1106.58公斤送往安全处置，1292.31公斤回收。
{"title":"Diseño de una red de logística inversa: caso de estudio Usochicamocha - Boyacá","authors":"J. Rodríguez","doi":"10.17230/INGCIENCIA.13.26.4","DOIUrl":"https://doi.org/10.17230/INGCIENCIA.13.26.4","url":null,"abstract":"espanolEste articulo presenta los resultados finales de una investigacion adelantada en el distrito de riego Usochicamocha del Departamento de Boyaca - Colombia, el cual enfrenta un problema a causa de la no devolucion y recoleccion de la totalidad de los envases y empaques vacios de plaguicidas que generan los agricultores. Debido a lo anterior, con la investigacion se propone una configuracion y funcionamiento de la red de logistica inversa (LI) para la recoleccion, acopio y disposicion final de los residuos de plaguicidas en dicha zona, para lo cual se desarrolla un modelo de programacion lineal entera mixta con el fin de definir tanto las cantidades a recolectar y transportar a disposicion final y evaluar la posibilidad de abrir nuevos centros de acopio. Los resultados del modelo matematico evidencian que, en promedio, se recolectan en cada finca 5 kg de residuos y que se envian 1106.58 kg a eliminacion segura y 1292.31 kg a reciclaje. EnglishThis paper presents the final results of an advance investigation in the Usochicamocha irrigation district of the Department of Boyaca - Colombia, which faces a problem because of the non - return and collection of al the empty packaging and packaging of pesticides that generate the farmers. Due to the above, the research proposes a configuration and operation of the reverse logistics network (LI) for the collection, collection and final disposal of pesticide residues in that area, for which a linear programming model was developed mixed in order to define both the quantities to be collected and transported to final disposal and to evaluate the possibility of opening new collection centers. The results of the mathematical model show that, on average, 5 kg of waste are collected on each farm and 1106.58 kg are sent to safe disposal and 1292.31 kg to be recycled.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"13 1","pages":"91-113"},"PeriodicalIF":0.0,"publicationDate":"2017-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.17230/INGCIENCIA.13.26.4","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67422647","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}
Pub Date : 2016-11-22DOI: 10.17230/INGCIENCIA.12.24.9
Johnny Valencia-Calvo, Carlos Jaime Franco-Cardona, Gerard Olivar-Tost, Isaac Dyner-Rezonzew
In the this paper, we show a methodological summary to simulate and understand the complex behavior of energy market models. The goal of this work is to propose the business approach of system dynamics, with the dynamical systems and its mathematical point of view. Additionally we present two ways to perform sensitivity analysis on models based on system dynamics. The first one is numerical sensitivity analysis, and the second one is using Poincare maps. Finally, we conclude that there is complementarity between the mathematical framework and the business applications for the market. This will allow us to achieve greater exploitation for our models.
{"title":"Enfoque metodológico para el estudio y representación de comportamientos complejos en mercados de electricidad","authors":"Johnny Valencia-Calvo, Carlos Jaime Franco-Cardona, Gerard Olivar-Tost, Isaac Dyner-Rezonzew","doi":"10.17230/INGCIENCIA.12.24.9","DOIUrl":"https://doi.org/10.17230/INGCIENCIA.12.24.9","url":null,"abstract":"In the this paper, we show a methodological summary to simulate and understand the complex behavior of energy market models. The goal of this work is to propose the business approach of system dynamics, with the dynamical systems and its mathematical point of view. Additionally we present two ways to perform sensitivity analysis on models based on system dynamics. The first one is numerical sensitivity analysis, and the second one is using Poincare maps. Finally, we conclude that there is complementarity between the mathematical framework and the business applications for the market. This will allow us to achieve greater exploitation for our models.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"12 1","pages":"195-220"},"PeriodicalIF":0.0,"publicationDate":"2016-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67422611","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}
Pub Date : 2016-11-22DOI: 10.17230/INGCIENCIA.12.24.10
Luis F. Cardona, L. Rivera, Héctor J. Martínez
The aim of this paper study the impact of class-based storage policy based on the optimal configuration of U-flow single command warehouses using a on an ABC product classification. For that purpose, the authors propose a non linear optimization model to minimize the expected travel distance of the warehouse and use analytical methods to solve it. The most important contribution is to provide a mathematical proof that regardless of the storage policy (It does not matter the specifics of the turnover pattern of the products), the optimal warehouse has a width that is the double of its length, and the pick and deposit point should be located in the middle of the width of the warehouse. In addition, authors perform a sensitivity analysis that indicates that the optimal solution is robust, meaning that a certain deviation from the optimum layout does not impose a significant penalty on the expected travel distance of the warehouse.
{"title":"Analytical Optimization for the Warehouse Sizing Problem Under Class-Based Storage Policy","authors":"Luis F. Cardona, L. Rivera, Héctor J. Martínez","doi":"10.17230/INGCIENCIA.12.24.10","DOIUrl":"https://doi.org/10.17230/INGCIENCIA.12.24.10","url":null,"abstract":"The aim of this paper study the impact of class-based storage policy based on the optimal configuration of U-flow single command warehouses using a on an ABC product classification. For that purpose, the authors propose a non linear optimization model to minimize the expected travel distance of the warehouse and use analytical methods to solve it. The most important contribution is to provide a mathematical proof that regardless of the storage policy (It does not matter the specifics of the turnover pattern of the products), the optimal warehouse has a width that is the double of its length, and the pick and deposit point should be located in the middle of the width of the warehouse. In addition, authors perform a sensitivity analysis that indicates that the optimal solution is robust, meaning that a certain deviation from the optimum layout does not impose a significant penalty on the expected travel distance of the warehouse.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"12 1","pages":"221-248"},"PeriodicalIF":0.0,"publicationDate":"2016-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67422027","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}
Pub Date : 2016-11-22DOI: 10.17230/INGCIENCIA.12.24.8
Jose M. Celis-Peñaranda, Christian D Escobar-Amado, S. B. Sepúlveda-Mora, S. A. Castro-Casadiego, Byron Medina-Delgado, J. Ramirez-Mateus
In order to optimize the traffic flow on a road intersection, an adaptive control algorithm and a data base were designed; both components were hosted on a Raspberry Pi B+ embedded system. The data base helps to debug the performance of the controller. The efficiency of the algorithm was assessed using a virtual instrument, which emulated a traffic light intersection in the city of Cucuta, i. e., the magnetorresistive sensors, the activation process of the traffic lights and the traffic flow. By processing and updating the times assigned to the traffic lights, the traffic flow was increased up to 5.5 % and the maximum time a vehicle has to wait before passing through the traffic light was decreased up to 28 seconds. Aditionally the length of line was diminished up to 18 %. Based on this case study, it can be inferred that is possible to integrate the adaptive control and the embedded systems as software and hardware tools to improve the operation of traffic control systems.
{"title":"Control adaptativo para optimizar una intersección semafórica basado en un sistema embebido","authors":"Jose M. Celis-Peñaranda, Christian D Escobar-Amado, S. B. Sepúlveda-Mora, S. A. Castro-Casadiego, Byron Medina-Delgado, J. Ramirez-Mateus","doi":"10.17230/INGCIENCIA.12.24.8","DOIUrl":"https://doi.org/10.17230/INGCIENCIA.12.24.8","url":null,"abstract":"In order to optimize the traffic flow on a road intersection, an adaptive control algorithm and a data base were designed; both components were hosted on a Raspberry Pi B+ embedded system. The data base helps to debug the performance of the controller. The efficiency of the algorithm was assessed using a virtual instrument, which emulated a traffic light intersection in the city of Cucuta, i. e., the magnetorresistive sensors, the activation process of the traffic lights and the traffic flow. By processing and updating the times assigned to the traffic lights, the traffic flow was increased up to 5.5 % and the maximum time a vehicle has to wait before passing through the traffic light was decreased up to 28 seconds. Aditionally the length of line was diminished up to 18 %. Based on this case study, it can be inferred that is possible to integrate the adaptive control and the embedded systems as software and hardware tools to improve the operation of traffic control systems.","PeriodicalId":30405,"journal":{"name":"Ingenieria y Ciencia","volume":"45 1","pages":"169-193"},"PeriodicalIF":0.0,"publicationDate":"2016-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"67422604","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}
Pub Date : 2016-11-22DOI: 10.17230/INGCIENCIA.12.24.6
D. Ballesteros, D. Renza, L.F. Pedraza
The purpose of this paper is to present a comparative analysis of hardware design of the Discrete Wavelet Transform (DWT) in terms of three design goals: accuracy, hardware cost and operating frequency. Every design should take into account the following facts: method (non-polyphase, polyphase and lifting), topology (multiplier-based and multiplierless-based), structure (conventional or pipelined), and quantization format (floatingpoint, fixed-point, CSD or integer). Since DWT is widely used in several applications (e.g. compression, filtering, coding, pattern recognition among others), selection of adequate parameters plays an important role in the performance of these systems.
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