T. A. Castillo, C. E. Díaz B., J. D. Gomez, E. Orduz, M. Niño
We solved the Flexible Job Shop Scheduling Problem (FJSSP) with transportation constraints in order to minimize the makespan by sequencing and assigning machines. A bibliographic review was made in order to guide the methodology to be used. From there, we approached the problem with a genetic algorithm. We validated its eff ectiveness by comparing the results obtained with different instances proposed in the literature. The results obtained show that the proposed genetic algorithm is efficient in the different classic Job Shop configurations tested. The algorithm is able to find very approximate solutions to the best found to date for the Flexible Job Shop Scheduling Problem with transportation constraints.
{"title":"Optimización del makespan en el problema de Job Shop Flexible con restricciones de transporte usando Algoritmos Genéticos","authors":"T. A. Castillo, C. E. Díaz B., J. D. Gomez, E. Orduz, M. Niño","doi":"10.31908/19098367.3820","DOIUrl":"https://doi.org/10.31908/19098367.3820","url":null,"abstract":"We solved the Flexible Job Shop Scheduling Problem (FJSSP) with transportation constraints in order to minimize the makespan by sequencing and assigning machines. A bibliographic review was made in order to guide the methodology to be used. From there, we approached the problem with a genetic algorithm. We validated its eff ectiveness by comparing the results obtained with different instances proposed in the literature. The results obtained show that the proposed genetic algorithm is efficient in the different classic Job Shop configurations tested. The algorithm is able to find very approximate solutions to the best found to date for the Flexible Job Shop Scheduling Problem with transportation constraints.","PeriodicalId":41325,"journal":{"name":"ENTRE CIENCIA E INGENIERIA","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2018-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46915647","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 current models of endovascular stents have an auto-expanding biomechanism with shape memory material which is able to adjust itself in the middle of implantation. These models have problems in implantation procedures in the artery; including problems of decoupling. As an alternative to the situation, a new aortic adjustable stent was developed. This model of controlled mobility aims to facilitate the implantation procedure and the non-decoupling due to the hemodynamic activity. A geometric design was developed, and several simulations were developed to analyze its biomechanical behavior using the Working Model program as a computational tool. Some results were obtained that indicated the feasibility and correct functionality of this alternative for the problem of decoupling and implantation.
{"title":"Diseño estructural de un stent endovascular para el tratamiento de un aneurisma aórtico","authors":"S. Aristizábal, G. Suárez, S. Parra","doi":"10.31908/19098367.3809","DOIUrl":"https://doi.org/10.31908/19098367.3809","url":null,"abstract":"The current models of endovascular stents have an auto-expanding biomechanism with shape memory material which is able to adjust itself in the middle of implantation. These models have problems in implantation procedures in the artery; including problems of decoupling. As an alternative to the situation, a new aortic adjustable stent was developed. This model of controlled mobility aims to facilitate the implantation procedure and the non-decoupling due to the hemodynamic activity. A geometric design was developed, and several simulations were developed to analyze its biomechanical behavior using the Working Model program as a computational tool. Some results were obtained that indicated the feasibility and correct functionality of this alternative for the problem of decoupling and implantation.","PeriodicalId":41325,"journal":{"name":"ENTRE CIENCIA E INGENIERIA","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2018-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46024041","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 work briefl y recounts the beginnings of project management as a formal profession, presenting the diff erent organizations around the world that promote it, its methodologies and standards as well as certifi cations for its accreditation. It also makes a succinct analysis of the project management situation in Colombia to fi nish with closing notes.
{"title":"Gestión de Proyectos: origen, instituciones, metodologías, estándares y certificaciones","authors":"S. Velez, J. A. Zapata, A. Henao","doi":"10.31908/19098367.3818","DOIUrl":"https://doi.org/10.31908/19098367.3818","url":null,"abstract":"This work briefl y recounts the beginnings of project management as a formal profession, presenting the diff erent organizations around the world that promote it, its methodologies and standards as well as certifi cations for its accreditation. It also makes a succinct analysis of the project management situation in Colombia to fi nish with closing notes.","PeriodicalId":41325,"journal":{"name":"ENTRE CIENCIA E INGENIERIA","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2018-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45964455","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}
We are sharing some ideas and theoretical supports that comes from a doctoral thesis, with the scientifi c community that is inquiring about the nature of the science fi eld (NOS). The goal of this work is to identify the epistemological time derives by NOS using two books, mainly in the representation and languages fi elds. Systematic networks were built in order to asses the textual statement derives from the books. no propositions related to Representation and Languages were found suggesting the absence or unclear thought about a NOS representation. These results have been already reported previously in other investigations. The highlight of this work is the proposal of the epistemology periodization, which is considered as a useful metascientifi c tool used for the characterization of NOS representation, with a better conceptual approach.
{"title":"Representaciones de naturaleza de la ciencia en libros de texto de química: indagando por los tópicos epistemológicos de Representación y Lenguajes","authors":"R. Amador, N. Ospina, A. Aduriz","doi":"10.31908/19098367.3821","DOIUrl":"https://doi.org/10.31908/19098367.3821","url":null,"abstract":"We are sharing some ideas and theoretical supports that comes from a doctoral thesis, with the scientifi c community that is inquiring about the nature of the science fi eld (NOS). The goal of this work is to identify the epistemological time derives by NOS using two books, mainly in the representation and languages fi elds. Systematic networks were built in order to asses the textual statement derives from the books. no propositions related to Representation and Languages were found suggesting the absence or unclear thought about a NOS representation. These results have been already reported previously in other investigations. The highlight of this work is the proposal of the epistemology periodization, which is considered as a useful metascientifi c tool used for the characterization of NOS representation, with a better conceptual approach.","PeriodicalId":41325,"journal":{"name":"ENTRE CIENCIA E INGENIERIA","volume":"219 5","pages":""},"PeriodicalIF":0.4,"publicationDate":"2018-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41266421","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}
{"title":"Uso de kits experimentales para mejorar las actitudes y bajar la repitencia en Química General","authors":"M. Molina C.","doi":"10.31908/19098367.3817","DOIUrl":"https://doi.org/10.31908/19098367.3817","url":null,"abstract":"","PeriodicalId":41325,"journal":{"name":"ENTRE CIENCIA E INGENIERIA","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2018-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69786468","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}
El objetivo de este articulo de revision de tema se fundamenta en tres aspectos: 1. Una Aproximacion conceptual y normativa desde diferentes paises sobre productos peligrosos/ defectuosos; 2. La responsabilidad asumida por los entes de vigilancia y control en Colombia, y 3. Las implicaciones a nivel de salud y seguridad para el consumidor generadas por los productos peligrosos/defectuosos. Aunque existe normatividad sobre dichos productos, y teorias que soportan el tema, en Colombia son incipientes las estrategias de divulgacion empleadas por el Estado y por las entidades u organismos que salvaguardan los derechos de los consumidores, o se desconocen los medios de consulta que pueden emplear estos. Para la recoleccion de la informacion se consultaron bases de datos en idioma espanol e ingles, con fecha de publicacion de 2010 a 2017. Con el fi n de procesar la informacion se reviso la literatura seleccionada y se identifi caron puntos de encuentro con relacion al objetivo propuesto. El articulo concluye que el consumidor debe participar activamente en esta cadena, identificando los productos peligrosos y defectuosos y quien los comercializa, con el objeto de que las instancias competentes los retiren del mercado y minimizar asi el impacto/dano a su salud o a su integridad.
{"title":"Dispositivos electrónicos y vehículos automotores: productos defectuosos y peligrosos para el consumidor","authors":"F. Almanza, M. Cáceres, B. J. Pérez","doi":"10.31908/19098367.3819","DOIUrl":"https://doi.org/10.31908/19098367.3819","url":null,"abstract":"El objetivo de este articulo de revision de tema se fundamenta en tres aspectos: 1. Una Aproximacion conceptual y normativa desde diferentes paises sobre productos peligrosos/ defectuosos; 2. La responsabilidad asumida por los entes de vigilancia y control en Colombia, y 3. Las implicaciones a nivel de salud y seguridad para el consumidor generadas por los productos peligrosos/defectuosos. Aunque existe normatividad sobre dichos productos, y teorias que soportan el tema, en Colombia son incipientes las estrategias de divulgacion empleadas por el Estado y por las entidades u organismos que salvaguardan los derechos de los consumidores, o se desconocen los medios de consulta que pueden emplear estos. Para la recoleccion de la informacion se consultaron bases de datos en idioma espanol e ingles, con fecha de publicacion de 2010 a 2017. Con el fi n de procesar la informacion se reviso la literatura seleccionada y se identifi caron puntos de encuentro con relacion al objetivo propuesto. El articulo concluye que el consumidor debe participar activamente en esta cadena, identificando los productos peligrosos y defectuosos y quien los comercializa, con el objeto de que las instancias competentes los retiren del mercado y minimizar asi el impacto/dano a su salud o a su integridad.","PeriodicalId":41325,"journal":{"name":"ENTRE CIENCIA E INGENIERIA","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2018-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49523057","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}
Este articulo muestra un panorama general de las tematicas de investigacion y desarrollo en el area de la simulacion en el entrenamiento y apoyo de cirugias usando la tecnologia de Realidad Aumentada, la cual se caracteriza por enriquecer la percepcion sensorial adicionando contenido virtual sobre la percepcion de realidad. Inicialmente, se describen los sistemas de guia de ayuda para cirugia, luego, los principales avances en simuladores usando como base de comparacion los simuladores de Realidad Virtual (VR) y, para fi nalizar, se realiza una exposicion de aplicaciones de Realidad Aumentada (AR) en la cirugia haciendo enfasis en las cirugias minimamente invasivas. En esta revision se muestra el rol de la simulacion en el entrenamiento quirurgico y en la cirugia guiada, asi como la ventaja comparativa de los entrenadores de Realidad Aumentada (AR) sobre los de Realidad Virtual (VR).
{"title":"Una aproximación a la realidad aumentada y sus aplicaciones quirúrgicas","authors":"E. Aguilar, A. Vivas, J. Sabater","doi":"10.31908/19098367.3811","DOIUrl":"https://doi.org/10.31908/19098367.3811","url":null,"abstract":"Este articulo muestra un panorama general de las tematicas de investigacion y desarrollo en el area de la simulacion en el entrenamiento y apoyo de cirugias usando la tecnologia de Realidad Aumentada, la cual se caracteriza por enriquecer la percepcion sensorial adicionando contenido virtual sobre la percepcion de realidad. Inicialmente, se describen los sistemas de guia de ayuda para cirugia, luego, los principales avances en simuladores usando como base de comparacion los simuladores de Realidad Virtual (VR) y, para fi nalizar, se realiza una exposicion de aplicaciones de Realidad Aumentada (AR) en la cirugia haciendo enfasis en las cirugias minimamente invasivas. En esta revision se muestra el rol de la simulacion en el entrenamiento quirurgico y en la cirugia guiada, asi como la ventaja comparativa de los entrenadores de Realidad Aumentada (AR) sobre los de Realidad Virtual (VR).","PeriodicalId":41325,"journal":{"name":"ENTRE CIENCIA E INGENIERIA","volume":"1 1","pages":""},"PeriodicalIF":0.4,"publicationDate":"2018-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69786113","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}
Arbustos de Syzyngium paniculatum se encuentran en la ciudad de Bogota adornando calles, parques y jardines; presentan frutos vistosos conocidos como cereza magenta, a los que no se les da ningun tipo de aprovechamiento. En este estudio se realiza la caracterizacion de las propiedades fi sicoquimicas de dichos frutos en diferentes estados de maduracion, para lo cual se llevaron a cabo analisis de peso fresco (0.23g–5.7g), diametro longitudinal (9.22mm–26.2mm) y ecuatorial (6.18mm–23.6mm), humedad (70%-85%), cenizas (0.012%-0.038%), pH (3.00–4.12), solidos solubles totales (6.2°Brix–12.2°Brix), acidez total titulable (1.7–23.9mg de acido citrico/g), clasifi cando fi nalmente cinco estados de maduracion. En frutos con estado de maduracion de consumo se analizo el contenido de minerales por espectrofotometria de absorcion atomica. Se concluye que los frutos de S. paniculatum son un producto que tienen potencial para ser explotado para consumo humano en Bogota, de acuerdo con las caracteristicas fi sicoquimicas encontradas y el contenido de fenoles. A su vez, se sugiere realizar analisis fi toquimicos que complementen un estudio de la bioprospeccion del fruto.
在波哥大的街道、公园和花园中发现了Syzyngium paniculatum灌木;它们有艳丽的果实，被称为品红樱桃，没有任何用途。在这项研究中进行该属性的caracterizacion fi sicoquimicas maduracion取得这些成果在不同国家,为此开展了分析重(0.23g—5.7g)、纵向diametro (9.22mm—26.2mm)和赤道(6.18mm—23.6mm(70%-85%湿度)、灰(0.012%-0.038%)、酸碱度(3—(4.12),自己完全糖总额6.2°Brix—12.2°Brix),总酸度titulable(1.7—23.9mg citrico酸/ g), clasifi cando fi nalmente maduracion五国。本研究的目的是分析在墨西哥和美国的水果中矿物质的含量。本研究的目的是评估在Bogota中发现的paniculatum果实的物理化学特性和酚含量，并确定其对人类消费的潜力。此外，还建议进行化学分析，以补充水果生物勘探的研究。
{"title":"Análisis fisicoquímico de frutos de Syzygium paniculatum en diferentes estados de maduración","authors":"W. Pérez, J. Mojica","doi":"10.31908/19098367.3822","DOIUrl":"https://doi.org/10.31908/19098367.3822","url":null,"abstract":"Arbustos de Syzyngium paniculatum se encuentran en la ciudad de Bogota adornando calles, parques y jardines; presentan frutos vistosos conocidos como cereza magenta, a los que no se les da ningun tipo de aprovechamiento. En este estudio se realiza la caracterizacion de las propiedades fi sicoquimicas de dichos frutos en diferentes estados de maduracion, para lo cual se llevaron a cabo analisis de peso fresco (0.23g–5.7g), diametro longitudinal (9.22mm–26.2mm) y ecuatorial (6.18mm–23.6mm), humedad (70%-85%), cenizas (0.012%-0.038%), pH (3.00–4.12), solidos solubles totales (6.2°Brix–12.2°Brix), acidez total titulable (1.7–23.9mg de acido citrico/g), clasifi cando fi nalmente cinco estados de maduracion. En frutos con estado de maduracion de consumo se analizo el contenido de minerales por espectrofotometria de absorcion atomica. Se concluye que los frutos de S. paniculatum son un producto que tienen potencial para ser explotado para consumo humano en Bogota, de acuerdo con las caracteristicas fi sicoquimicas encontradas y el contenido de fenoles. A su vez, se sugiere realizar analisis fi toquimicos que complementen un estudio de la bioprospeccion del fruto.","PeriodicalId":41325,"journal":{"name":"ENTRE CIENCIA E INGENIERIA","volume":" ","pages":""},"PeriodicalIF":0.4,"publicationDate":"2018-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46961357","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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