Pub Date : 2020-08-28DOI: 10.17533/udea.redin.20200805
A. Vásquez, Julian Uribe Perez
Amputación de miembros inferiores; marcha, dispositivo de alineación; ingeniería de diseño; impresión 3D ABSTRACT: The alignment of lower limb prosthesis is one of the most significant procedures for prosthetic adaptation since it allows greater comfort and fulfillment of the prosthesis function. Prosthetic misalignment can lead to severe consequences for the patient, such as gait instability and increased load on the residual limb. The fitting and alignment of the prosthetic system is a highly subjective procedure that relies mainly on the professional experience of the prosthetist. This study aims to design a prototype of a low-cost alignment device for lower transfemoral prosthesis to be used temporarily during the prosthesis static alignment. The conceptual design methodology was implemented. The device was modeled in SolidWorks, and the mechanical resistance of the device was determined in a finite element analysis in Ansys. Among the tested materials, CarbonFil exhibited the best behavior showing promising results for a 3D printed alignment device prototype. The viability of this device’s massive production should be considered to further reduce its cost and be implemented in a larger number of prosthetic centers worldwide.
Amputación de miembros inferiores;Marcha, dispositivo de alineación;Ingeniería de diseño;摘要:下肢假肢的对准是假肢适应的重要步骤之一，因为它可以提供更大的舒适性和实现假肢的功能。假体错位会对患者造成严重后果，如步态不稳定和残肢负荷增加。假体系统的装配和对齐是一个高度主观的过程，主要依赖于假体医师的专业经验。本研究旨在设计一种低成本的经股下肢假体对准装置原型，用于假体静态对准时的临时使用。实施了概念设计方法。在SolidWorks中对装置进行建模，在Ansys中进行有限元分析，确定装置的机械阻力。在测试的材料中，CarbonFil表现出最好的性能，显示出3D打印对准装置原型的良好结果。应该考虑该装置大规模生产的可行性，以进一步降低其成本，并在世界范围内更多的假肢中心实施。
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Pub Date : 2020-08-24DOI: 10.17533/udea.redin.20200804
Roberto Andrés Estrada Cingualbres, Héctor Calzadilla Dubras, José Martínez Grave de Peralta, Rafael Valera Llanes, J. R. Pérez Pupo
Roberto Andrés Estrada Cingualbres1, Héctor Calzadilla Dubras2, José Martínez Grave de Peralta 3, Rafael Valera Llanes 2, Juan Rafael Pérez Pupo4* 1Centro de estudios CAD/CAM, Facultad de Mecánica, Universidad de Holguín. Avenida XX Aniversario. C. P. 80100. Holguín, Cuba. 2Centro de Desarrollo de la Maquinaria Agrícola (CEDEMA). C. P. 80100 Holguín, Cuba. 3Departamento de Mecánica Aplicada, Facultad de Ingeniería, Universidad de Holguín. Avenida XX Aniversario. C. P. 80100. Holguín, Cuba. 4Escuela Politécnica Superior del Chimborazo. Ent 1 ESPOCH. C. P. 060155. Riobamba, Ecuador.
罗伯托·安德烈·埃斯特拉达Cingualbres1,赫克托耳Calzadilla Dubras2、jose martinez严重Peralta3、Rafael Valera Llanes 2, Juan Rafael perez Pupo4 * 1Centro学习CAD / CAM holguin大学机械学院。20周年纪念大道。c.p. 80100。2农业机械发展中心(CEDEMA)。C. P. 80100 holguin，古巴。3 holguin大学工程学院应用力学系。20周年纪念大道。c.p. 80100。4钦博拉索高等理工学院。有一个引信。邮政信箱060155。Riobamba、厄瓜多尔。
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Pub Date : 2020-08-19DOI: 10.19053/01211129.v29.n54.2020.11373
J. Pineda-Jaimes, C. García-Ubaque, Rodrigo Elías Esquivel-Ramírez
The development of resilient and sustainable cities considers the construction of infrastructure projects that involve deep excavations. During excavations, surface displacements frequently occur that may be inadmissible for previously constructed elements of the urban environment, threatening the sustainability of already consolidated sectors. In this article, we present an approximation to the estimation of the geotechnical hazard by deep excavations in soft lacustrine soils of Bogotá, DC, using parametric numerical simulations that sought to establish the probability of occurrence of base bottom heave, and the estimation of surface displacements for variable excavation geometries. A database was consolidated from 85 projects found in geotechnical zones having soft soils in the city. From this base, statistically representative values of shear strength and stiffness were determined, and a statistically representative geotechnical profile of the lacustrine clays was prepared for parametric analyzes. The hazard estimation was developed in three stages: construction of the geotechnical model, approach of hazard scenarios and 1 Ph. D. Universidad Distrital “Francisco José de Caldas” (Bogotá-Distrito Capital, Colombia). japinedaj@udistrital.edu.co. ORCID: 0000-0002-0953-9745 2 Ph. D. Universidad Distrital “Francisco José de Caldas” (Bogotá-Distrito Capital, Colombia). cagarciau@udistrital.edu.co. ORCID: 0000-0002-1825-0097 3 M. Sc. (c). Universidad Distrital “Francisco José de Caldas” (Bogotá-Distrito Capital, Colombia). resquivel@udistrital.edu.co. ORCID: 0000-0002-6048-7098 Assessment of Geotechnical Hazard due to Deep Excavations in Bogota Clays: A Contribution for Sustainability in Urban Environments Revista Facultad de Ingeniería (Rev. Fac. Ing.) Vol. 29 (54), e10892. 2020. Tunja-Boyacá, Colombia. L-ISSN: 0121-1129, e-ISSN: 2357-5328, DOI: https://doi.org/10.19053/01211129.v29.n54.2020.11373 determination of the hazard level. The following parameters were considered: excavation geometry (base and height), safety factor, failure probability and vertical ground displacements (settlements). Finally, a matrix is presented to determine the hazard level by excavations in the soft soils of Bogotá, whose data provide a prior assessment that contributes to promoting resilience and sustainability of already developed areas.
弹性和可持续城市的发展考虑到涉及深度挖掘的基础设施项目的建设。在挖掘过程中，地表经常发生位移，这可能是以前建造的城市环境要素所不能接受的，威胁到已经巩固的部分的可持续性。在这篇文章中，我们提出了波哥大软湖土中深开挖岩土工程危害估计的近似值，使用参数数值模拟，试图建立基础底部隆起发生的概率，以及对可变开挖几何形状的表面位移的估计。从城市软土的岩土工区发现的85个项目中合并了一个数据库。在此基础上，确定了具有统计代表性的抗剪强度和刚度值，并编制了具有统计代表性的湖相粘土岩土剖面进行参数分析。灾害估计分三个阶段进行:岩土模型的构建、灾害情景的方法和“Francisco jos de Caldas”大学区博士学位1 (Bogotá-Distrito，哥伦比亚首都)。japinedaj@udistrital.edu.co。ORCID: 0000-0002-0953-9745 2 phd . universsidad distriital“Francisco josise de Caldas”(Bogotá-Distrito Capital, columbia)。cagarciau@udistrital.edu.co。ORCID: 0000-0002-1825-0097 3 m.s c. Universidad distriital“Francisco jos de Caldas”(Bogotá-Distrito Capital, columbia)。resquivel@udistrital.edu.co。地质与工程学报，2000,21(2):444 - 444。荷兰国际集团(Ing))。Vol. 29 (54)， e10892。2020. Tunja-Boyaca,哥伦比亚。L-ISSN: 0121-1129, e-ISSN: 2357-5328, DOI: https://doi.org/10.19053/01211129.v29.n54.2020.11373危害等级的测定。考虑开挖几何形状(基底和高度)、安全系数、破坏概率和地面垂直位移(沉降)等参数。最后，提出了一个矩阵来确定波哥大软土中挖掘的危害程度，其数据提供了一个预先评估，有助于促进已开发地区的恢复力和可持续性。
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Pub Date : 2020-08-06DOI: 10.17533/udea.redin.20200802
A. Bouras, Slimane Bouras, C. Rouabhia, Luis Hernández Callejo, Nassim Eddine Haouam
Investigación experimental de un generador alternativo diseñado para energía eólica Abdelkarim Bouras1, Slimane Bouras2, Chems Eddine-Rouabhia3, Luis Hernández-Callejo4*, Nassim Eddine-Haouem2 1Electromechanical Systems Laboratory, Department of Electromechanical, Badji Mokhtar University. C. P. 23000. Annaba, Algeria. 2The Industrial Risks, C.N.D, S.O.M.M Laboratory, Department of Electromechanical, Badji Mokhtar University. C. P. 23000. Annaba, Algeria. 3Electromechanical Engineering Laboratory, Department of Electromechanical, FSI, Badji Mokhtar University. C. P. 23000. Annaba, Algeria. 4Departamento de Ingeniería Agrícola y Forestal, Universidad de Valladolid (UVa). C/Plaza de Santa Cruz, 8, Valladoid. C. P. 42004. Soria, España.
实验性研究一个备用发电机用于风能Abdelkarim Bouras1,Slimane Bouras2、Chems Eddine-Rouabhia3、Luis Hernández-Callejo4 *、Nassim Eddine-Haouem2 1Electromechanical Systems Laboratory) Department of Electromechanical,巴吉Mokhtar大学。公元前23000年。2工业风险，C.N.D, S.O.M.M实验室，Badji Mokhtar大学机电系。公元前23000年。阿尔及利亚安纳巴，Badji Mokhtar大学机电工程系第三机电工程实验室。公元前23000年。4巴利亚多利德大学农业与林业工程系(UVa)。圣克鲁斯广场，8号，瓦拉多利德。它是一种非常罕见的鸟类。雅阁下,西班牙。
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Pub Date : 2020-07-28DOI: 10.17533/udea.redin.20200700
Yulian Fernando Rodríguez Pantoja, Ana Paula Villaquirán Vargas, Samuel Fernando Muñoz Navarro
Study of mechanisms responsible for foaming-agent loss in porous media at high-temperature conditions Mecanismos que ocasionan pérdidas de agente espumante en medio poroso en condiciones de alta temperatura Yulian Fernando Rodríguez-Pantoja 1*, Ana Paula Villaquirán-Vargas 1, Samuel Fernando Muñoz-Navarro1 1Grupo de Investigación GRM, Escuela de Ingeniería de Petróleos, Facultad de Ingenierías Fisico-químicas, Universidad Industrial de Santander. Cra 27 Calle 9 Ciudad Universitaria. C. P. 680002. Bucaramanga, Colombia.
Study of机制负责foaming-agent loss in porous半个at high-temperature conditions机制造成的损失多孔发泡剂在高温条件下Yulian Fernando Rodríguez-Pantoja1 *,Ana Paula Villaquirán-Vargas1 Samuel Fernando Muñoz-Navarro1 1Grupo GRM研究石油工程学院,工程学院工业大学Fisico-químicas桑坦德。Cra 27 9街大学城。邮政信箱680002。布卡拉曼加、哥伦比亚。
{"title":"Study of mechanisms responsible for foaming-agent loss in porous media at high-temperature conditions","authors":"Yulian Fernando Rodríguez Pantoja, Ana Paula Villaquirán Vargas, Samuel Fernando Muñoz Navarro","doi":"10.17533/udea.redin.20200700","DOIUrl":"https://doi.org/10.17533/udea.redin.20200700","url":null,"abstract":"Study of mechanisms responsible for foaming-agent loss in porous media at high-temperature conditions Mecanismos que ocasionan pérdidas de agente espumante en medio poroso en condiciones de alta temperatura Yulian Fernando Rodríguez-Pantoja 1*, Ana Paula Villaquirán-Vargas 1, Samuel Fernando Muñoz-Navarro1 1Grupo de Investigación GRM, Escuela de Ingeniería de Petróleos, Facultad de Ingenierías Fisico-químicas, Universidad Industrial de Santander. Cra 27 Calle 9 Ciudad Universitaria. C. P. 680002. Bucaramanga, Colombia.","PeriodicalId":21428,"journal":{"name":"Revista Facultad De Ingenieria-universidad De Antioquia","volume":"47 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2020-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74010384","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 : 2020-07-27DOI: 10.17533/udea.redin.20200799
Antonio José Bravo Valero, M. Vera, Yoleidy Katherine Huérfano Maldonado, Yeison Fabián Manrique Hidalgo
A comprehensive study of a similarity criterion in cardiac computerized tomography images enhancement Estudio de un criterio de similaridad en la mejora de imágenes cardiacas de tomografía computarizada Antonio José Bravo Valero1*, Miguel Angel Vera1, Yoleidy Huérfano2, Yeison Fabian Manrique Hidalgo3 1Facultad de Ciencias Básicas y Biomédicas, Universidad Simón Bolívar. Av 3 # 13--34 La Playa. C. P. 540001. San José de Cúcuta, Colombia. 2Grupo de Investigación en Procesamiento Computacional de Datos, Universidad de Los Andes. Av Las Pilas. C. P. 5001. San Cristóbal, Venezuela. 3Facultad de Ingeniería, Universidad Simón Bolívar. Av 3 # 13--34 La Playa. C. P. 540001. San José de Cúcuta, Colombia.
要全面study of similarity雅典in cardiac computerized tomography images enhancement相似的标准研究改善心脏图像计算机层析成像扫描何塞·安东尼奥布拉沃Valero1 * 1、Yoleidy孤儿米开朗基罗维拉2、Yeison Fabian曼里克Hidalgo3 1Facultad大学基础科学和生物医学的西蒙·玻利瓦尔。3号Av # 13- 34海滩。邮政信箱540001。2洛斯安第斯大学计算数据处理研究小组。去电池。邮政信箱5001。San cristobal，委内瑞拉，simon bolivar大学工程学院。3号Av # 13- 34海滩。邮政信箱540001。San jose de cucuta，哥伦比亚。
{"title":"A comprehensive study of a similarity criterion in cardiac computerized tomography images enhancement","authors":"Antonio José Bravo Valero, M. Vera, Yoleidy Katherine Huérfano Maldonado, Yeison Fabián Manrique Hidalgo","doi":"10.17533/udea.redin.20200799","DOIUrl":"https://doi.org/10.17533/udea.redin.20200799","url":null,"abstract":"A comprehensive study of a similarity criterion in cardiac computerized tomography images enhancement Estudio de un criterio de similaridad en la mejora de imágenes cardiacas de tomografía computarizada Antonio José Bravo Valero1*, Miguel Angel Vera1, Yoleidy Huérfano2, Yeison Fabian Manrique Hidalgo3 1Facultad de Ciencias Básicas y Biomédicas, Universidad Simón Bolívar. Av 3 # 13--34 La Playa. C. P. 540001. San José de Cúcuta, Colombia. 2Grupo de Investigación en Procesamiento Computacional de Datos, Universidad de Los Andes. Av Las Pilas. C. P. 5001. San Cristóbal, Venezuela. 3Facultad de Ingeniería, Universidad Simón Bolívar. Av 3 # 13--34 La Playa. C. P. 540001. San José de Cúcuta, Colombia.","PeriodicalId":21428,"journal":{"name":"Revista Facultad De Ingenieria-universidad De Antioquia","volume":"41 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2020-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76363024","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 : 2020-07-24DOI: 10.17533/udea.redin.20200798
Melquisedec Cortés Zambrano, Wilson Enrique Amaya Tequia, Dania Soraya Gamba-Fernández
Implementation of the hydraulic modelling of urban drainage in the northeast sector, Tunja, Boyacá Modelización hidráulica de drenaje urbano. Implementación en sector, nororiental, Tunja-Boyacá Melquisedec Cortés-Zambrano1*, Wilson Enrique Amaya Tequia1, Dania Soraya Gamba Fernández 1 1Facultad de Ingeniería Civil, Universidad Santo Tomás. Calle 48 # 1 – 235 este. C. P. 150003. Tunja, Colombia.
{"title":"Implementation of the hydraulic modelling of urban drainage in the northeast sector, Tunja, Boyacá","authors":"Melquisedec Cortés Zambrano, Wilson Enrique Amaya Tequia, Dania Soraya Gamba-Fernández","doi":"10.17533/udea.redin.20200798","DOIUrl":"https://doi.org/10.17533/udea.redin.20200798","url":null,"abstract":"Implementation of the hydraulic modelling of urban drainage in the northeast sector, Tunja, Boyacá Modelización hidráulica de drenaje urbano. Implementación en sector, nororiental, Tunja-Boyacá Melquisedec Cortés-Zambrano1*, Wilson Enrique Amaya Tequia1, Dania Soraya Gamba Fernández 1 1Facultad de Ingeniería Civil, Universidad Santo Tomás. Calle 48 # 1 – 235 este. C. P. 150003. Tunja, Colombia.","PeriodicalId":21428,"journal":{"name":"Revista Facultad De Ingenieria-universidad De Antioquia","volume":"18 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2020-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78370619","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 : 2020-06-30DOI: 10.19053/01211129.v29.n54.2020.10892
Johanna Elvira Rodríguez-Ballesteros, Diana Catalina Rodriguez-Loaiza, G. A. Peñuela-Mesa
The decomposition of submerged organic matter after the flooding process of a reservoir and the organic matter transported by the tributaries that supply it, gives rise to the formation of greenhouse gases (GHG), such as CO2 and CH4, product of the aerobic and anaerobic biological processes that take place both on the surface and at the bottom of the reservoir. In this study, the dynamics of aerobic and anaerobic processes as well as the generation of greenhouse gases in the degradation of organic matter, present in a tropical reservoir, were compared. Batch reactors and plant material extracted from the protection strip were used. Likewise, the behavior of the variation of the COD, physicochemical parameters such as pH, dissolved oxygen, redox potential, and conductivity were evaluated, and the kinetic constants that represent the behavior of organic matter were defined. The results showed that the degradation of the organic material leads to the generation of GHG, however, when using water plus vegetal material, the GHG increased considerably after a time. This process is due to the fact that the plant material suffers the breakdown of its polymer chains and so it degrades more quickly, which increases 1 Universidad Industrial de Santander (Bucaramanga-Santander, Colombia). ORCID: 0000-0001-5479-908X 2 Ph. D. Universidad de Antioquia (Medellín-Antioquia, Colombia). diana.rodriguez@udea.edu.co. ORCID: 00000002-9310-6925 3 Ph. D. Universidad de Antioquia (Medellín-Antioquia, Colombia). gustavo.penuela@udea.edu.co. ORCID: 0000-0003-3065-0285 Comparison of in Batch Aerobic and Anaerobic Processes for the Degradation of Organic Matter in a Tropical Reservoir Revista Facultad de Ingeniería (Rev. Fac. Ing.) Vol. 29 (54), e10892. 2020. Tunja-Boyacá, Colombia. L-ISSN: 0121-1129, e-ISSN: 2357-5328, DOI: https://doi.org/10.19053/01211129.v29.n54.2020.10892 the concentration of organic matter available to microorganisms. GHG values were on average 10.290 g CO2eq/m.d with water only, and 24.536 g CO2eq/m.d with water and vegetal material for aerobic processes. In anaerobic processes, the values were on average 12.056 g CO2eq/m.d with water only, and 33.470 g CO2eq/m.d with water plus vegetal material. These laboratory scale results allow analyzing the behavior of the reservoir and the incidence of flooded plant material on GHGs.
水库淹水过程后被淹没的有机物的分解，以及供给它的支流输送的有机物，产生温室气体(GHG)，如CO2和CH4，这是发生在水库表面和底部的好氧和厌氧生物过程的产物。在本研究中，比较了热带水库中有机物降解过程中有氧和厌氧过程的动态以及温室气体的产生。采用间歇式反应器和从保护带中提取的植物材料。同样，对COD、理化参数(如pH、溶解氧、氧化还原电位和电导率)的变化行为进行了评估，并定义了代表有机物行为的动力学常数。结果表明:有机物质的降解导致温室气体的产生，而水加植物物质在一段时间后，温室气体的排放量明显增加。这一过程是由于植物材料的聚合物链被破坏，因此它降解得更快，这增加了1桑坦德工业大学(哥伦比亚布卡拉曼加-桑坦德)。ORCID: 0000-0001-5479-908X 2哥伦比亚安蒂奥基亚大学博士(Medellín-Antioquia)diana.rodriguez@udea.edu.co。ORCID: 00000002-9310-6925 3 Antioquia大学博士(Medellín-Antioquia，哥伦比亚)。gustavo.penuela@udea.edu.co。热带水库中有机物降解的间歇式好氧与厌氧工艺比较研究[j] .环境科学与工程学报Ingeniería (Rev. Fac.)。荷兰国际集团(Ing))。Vol. 29 (54)， e10892。2020. Tunja-Boyaca,哥伦比亚。L-ISSN: 0121-1129, e-ISSN: 2357-5328, DOI: https://doi.org/10.19053/01211129.v29.n54.2020.10892微生物可利用的有机物浓度。GHG值平均为10.290 g CO2eq/m。和24.536 g CO2eq/m。D与水和植物材料的有氧过程。在厌氧过程中，平均值为12.056 g CO2eq/m。和33.470 g CO2eq/m。D用水加上植物物质。这些实验室规模的结果可以分析水库的行为和被淹没的植物物质对温室气体的影响。
{"title":"Comparison of in Batch Aerobic and Anaerobic Processes for the Degradation of Organic Matter in a Tropical Reservoir","authors":"Johanna Elvira Rodríguez-Ballesteros, Diana Catalina Rodriguez-Loaiza, G. A. Peñuela-Mesa","doi":"10.19053/01211129.v29.n54.2020.10892","DOIUrl":"https://doi.org/10.19053/01211129.v29.n54.2020.10892","url":null,"abstract":"The decomposition of submerged organic matter after the flooding process of a reservoir and the organic matter transported by the tributaries that supply it, gives rise to the formation of greenhouse gases (GHG), such as CO2 and CH4, product of the aerobic and anaerobic biological processes that take place both on the surface and at the bottom of the reservoir. In this study, the dynamics of aerobic and anaerobic processes as well as the generation of greenhouse gases in the degradation of organic matter, present in a tropical reservoir, were compared. Batch reactors and plant material extracted from the protection strip were used. Likewise, the behavior of the variation of the COD, physicochemical parameters such as pH, dissolved oxygen, redox potential, and conductivity were evaluated, and the kinetic constants that represent the behavior of organic matter were defined. The results showed that the degradation of the organic material leads to the generation of GHG, however, when using water plus vegetal material, the GHG increased considerably after a time. This process is due to the fact that the plant material suffers the breakdown of its polymer chains and so it degrades more quickly, which increases 1 Universidad Industrial de Santander (Bucaramanga-Santander, Colombia). ORCID: 0000-0001-5479-908X 2 Ph. D. Universidad de Antioquia (Medellín-Antioquia, Colombia). diana.rodriguez@udea.edu.co. ORCID: 00000002-9310-6925 3 Ph. D. Universidad de Antioquia (Medellín-Antioquia, Colombia). gustavo.penuela@udea.edu.co. ORCID: 0000-0003-3065-0285 Comparison of in Batch Aerobic and Anaerobic Processes for the Degradation of Organic Matter in a Tropical Reservoir Revista Facultad de Ingeniería (Rev. Fac. Ing.) Vol. 29 (54), e10892. 2020. Tunja-Boyacá, Colombia. L-ISSN: 0121-1129, e-ISSN: 2357-5328, DOI: https://doi.org/10.19053/01211129.v29.n54.2020.10892 the concentration of organic matter available to microorganisms. GHG values were on average 10.290 g CO2eq/m.d with water only, and 24.536 g CO2eq/m.d with water and vegetal material for aerobic processes. In anaerobic processes, the values were on average 12.056 g CO2eq/m.d with water only, and 33.470 g CO2eq/m.d with water plus vegetal material. These laboratory scale results allow analyzing the behavior of the reservoir and the incidence of flooded plant material on GHGs.","PeriodicalId":21428,"journal":{"name":"Revista Facultad De Ingenieria-universidad De Antioquia","volume":"52 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73539450","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 : 2020-06-30DOI: 10.17533/udea.redin.20200690
Angelo Magno De Jesus, Ismar Frango Silveira
Gamebased collaborative learning framework for computational thinking development Marco de aprendizaje colaborativo basado en videojuegos para el desarrollo del pensamiento computacional Ângelo Magno de Jesus1,2Ismar Frango Silveira2 1Instituto Federal de Minas Gerais. Avenida Prof. Mário Werneck, 2590 Buritis. C. P. 36420-000. Belo Horizonte, Brazil. 2Universidade Cruzeiro do Sul. Galvão Bueno st., 868, Liberdade. C. P. 01506-000. São Paulo, Brazil.
{"title":"Game-based collaborative learning framework for computational thinking development","authors":"Angelo Magno De Jesus, Ismar Frango Silveira","doi":"10.17533/udea.redin.20200690","DOIUrl":"https://doi.org/10.17533/udea.redin.20200690","url":null,"abstract":"Gamebased collaborative learning framework for computational thinking development Marco de aprendizaje colaborativo basado en videojuegos para el desarrollo del pensamiento computacional Ângelo Magno de Jesus1,2Ismar Frango Silveira2 1Instituto Federal de Minas Gerais. Avenida Prof. Mário Werneck, 2590 Buritis. C. P. 36420-000. Belo Horizonte, Brazil. 2Universidade Cruzeiro do Sul. Galvão Bueno st., 868, Liberdade. C. P. 01506-000. São Paulo, Brazil.","PeriodicalId":21428,"journal":{"name":"Revista Facultad De Ingenieria-universidad De Antioquia","volume":"48 1","pages":"113-123"},"PeriodicalIF":1.0,"publicationDate":"2020-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82369518","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 : 2020-06-18DOI: 10.17533/udea.redin.20200692
Liliana Bolaños-Zúñiga, Carlos Julio Vidal-Holguín
Red de abastecimiento; inventarios; optimización; modelos de simulación ABSTRACT: The explicit consideration of inventory holding costs for the strategic design of supply chains has not been sufficiently addressed in scientific literature. A possible cause is that usually supply chain optimization models are deterministic and linear or mixed-integer linear, while forecasting methods and inventory control systems are stochastic and non-linear. It is clear, however, that inventory costs might have a significant impact on optimal supply chain configuration and on distribution systems expansion or contraction. This article presents a practical strategy that considers an item-by-item inventory control system by means of a Monte Carlo simulation model as a starting point to include inventory holding costs in a supply chain optimization model. Three strategies to include inventory costs in the objective function were analyzed: The Square Root Law (SRL), the potential functions that relate average inventory with warehouse throughput, and the estimation of average inventories by simulation. The results suggest that the SRL should not be used unless unusual assumptions hold and that potential functions are a very good approximation to consider inventory costs for supply chain configuration.
{"title":"The impact of inventory holding costs on the strategic design of supply chains","authors":"Liliana Bolaños-Zúñiga, Carlos Julio Vidal-Holguín","doi":"10.17533/udea.redin.20200692","DOIUrl":"https://doi.org/10.17533/udea.redin.20200692","url":null,"abstract":"Red de abastecimiento; inventarios; optimización; modelos de simulación ABSTRACT: The explicit consideration of inventory holding costs for the strategic design of supply chains has not been sufficiently addressed in scientific literature. A possible cause is that usually supply chain optimization models are deterministic and linear or mixed-integer linear, while forecasting methods and inventory control systems are stochastic and non-linear. It is clear, however, that inventory costs might have a significant impact on optimal supply chain configuration and on distribution systems expansion or contraction. This article presents a practical strategy that considers an item-by-item inventory control system by means of a Monte Carlo simulation model as a starting point to include inventory holding costs in a supply chain optimization model. Three strategies to include inventory costs in the objective function were analyzed: The Square Root Law (SRL), the potential functions that relate average inventory with warehouse throughput, and the estimation of average inventories by simulation. The results suggest that the SRL should not be used unless unusual assumptions hold and that potential functions are a very good approximation to consider inventory costs for supply chain configuration.","PeriodicalId":21428,"journal":{"name":"Revista Facultad De Ingenieria-universidad De Antioquia","volume":"23 1","pages":""},"PeriodicalIF":1.0,"publicationDate":"2020-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74548003","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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