Gestión de Producción y Logística

URI permanente para esta comunidad

https://hdl.handle.net/10784/4313

Realiza proyectos de investigación en conjunto con el sector industrial y/o gobierno, con el propósito de dar solución a problemas que se presenten en las áreas de producción y logística de las empresas, buscando así mejorar la productividad y competitividad de las mismas.

Líneas de investigación: Gestión de Producción y Logística Industrial.
Código Minciencias: COL0025371.
Categoría 2019: A.
Escuela: Ingeniería.
Departamento académico: Ingeniería de Producción.
Coordinador: Carlos Alberto Castro Zuluaga.
Correo electrónico: ccastro@eafit.edu.co

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Mostrando 1 - 20 de 45

ABC Multi-Classifier: A Simple Tool for Multi Criteria ABC Analysis.
(Universidad de Los Andes, 2010-07-23) Castro Zuluaga; Castro; Jaime; Rodriguez; Manuel; Universidad EAFIT. Departamento de Ingeniería de Producción; Gestión de Producción y Logística
Organizations have many stock keeping units (sku?s) that must be controlled for inventory purposes. In order to have an efficient control of all of them
AFOR-TSM: A Tool for Forecast with Time Series Models
(Inst of Industrial Engineers; Cdr edition, 2012-01-01) Castro Zuluaga; Builes; Rosana; Bravo; Maria Cristina; Universidad EAFIT. Departamento de Ingeniería de Producción; Gestión de Producción y Logística
One of the most complex and necessary subjects in courses of Operations Management (OM) is that students understand and apply Time Series Models (TSM) to forecast future demand.
Allocation of intermediate buffer storage capacities in a production line
(2013-07-24) Vélez Gallego, Mario César; Jaramillo Jiménez, Jhull B.; Universidad EAFIT. Departamento de Ingeniería de Producción; marvelez@eafit.edu.co; jjaram61@eafit.edu.co; Gestión de Producción y Logística
In this research proposal we consider a production line with random demand and subject to random failures at each workstation -- Every time a workstation fails, a corrective maintenance activity is triggered to repair the workstation -- In order to palliate the effect of the random failures in the performance of the system, intermediate buffers are placed in-between workstations -- An inventory holding cost that increases with the stage of the process is associated to each buffer -- The research objective in this work is to allocate capacity to each intermediate buffer in the line so that the average cost per time unit is minimized while the average service level is kept above a minimum value -- In this paper we assume that unsatisfied demand is lost and the service level is defined as the long term proportion of satisfied demand -- A greedy simulation–based heuristic is presented to find a feasible solution to the problem in a reasonable computational time
Analysis of chaotic behaviour in supply chain variables
(Journal of Economics, Finance and Administrative Science, 2011-12) Peña Zapata, Gloria Elena; Ramírez Echeverri, Sergio Augusto; Universidad EAFIT. Departamento de Ingeniería de Producción; ramire@eafit.edu.co; gepena@unal.edu.co; Gestión de Producción y Logística
In this article we develop a supply chain model of four levels through the utilization of system dynamics with Ithink® and Mathlab® softwares to analyze data -- The supply chain is studied from the chaos theory perspective, which helps identifying the sensitive variables that can lead to a state of chaos -- A generic structure model that comprehends factory links, distribution, wholesale, retail and the client is constructed -- The difficulty of operations and logistics managers to decide how much to order and when to do it is simulated accordingly to what occurs in the links of the preceding and subsequent levels with two decision parameters: The first parameter denominated A indicates the participation (between 0 and 1) of the number of product units that are taken into account in the actual stock and the pending orders at the moment of performing an order – Thesecond parameter, denominated B, is the participation (between 0 and 1) of the number of units in the supply line (in transit) at the moment of performing orders of each of the links of the supply chain
An approach for printing the maximum possible number of images
(Institute of Industrial Engineers, 2017-01-01) Rojas-Santiago M.; Barbosa R.C.; Muthuswamy S.; Hulett M.; Velez-Gallego M.C.; Universidad EAFIT. Departamento de Ingeniería de Producción; Gestión de Producción y Logística
This paper considers a real life application of a printing process in a lithographic company that manufactures food packaging bags. The focus area of this problem is to print a variety of 2D images of bags on a surface area for maximum press layouts, with a constraint that the orientation of all bags is fixed and they should be placed parallel to the edges of the impression material. The problem under study is NP-hard and is an extension of the classical knapsack problem. An algorithm to maximize the number of rectangular images of bags that can be placed within the printing material is proposed. The results were compared with a Particle Swarm Optimization (PSO) metaheuristic. Several numerical experiments show that our procedure outperforms the PSO algorithm and improves the lithography's performance.
An approach to make statistical forecasting of products with stationary/seasonal patterns
(Production and Operations Management Society (POMS), 2014-05-09) Castro-Zuluaga, Carlos A.; Botero-Escobar, Sara C.; Castro-Zuluaga, Carlos A.; Botero-Escobar, Sara C.; Universidad EAFIT. Grupo de Investigación Gestión de Producción y Logística; Universidad EAFIT. Departamento de Ingeniería de Producción; ccastro@eafit.edu.co; sboter11@eafit.edu.co; Gestión de Producción y Logística
At any company there are hundreds, maybe thousands of products that must be forecasted with the best accuracy, in order to make a good demand management process, which are required at all planning levels in a company -- Statistical forecasting must be done fast and sometimes there are not enough resources to do it well -- In In this paper we make a proposal of an approach to define the parameter of the exponential smoothing model for products with a behavior pattern stationary or seasonal/stationary in the historical data, to obtain “good forecasting" A numerical example is used to show the effectiveness of the proposed method
Aspects to consider for high quality administration of Corporate Distribution Centers (Centros de Distribución, CEDIS)
(Journal of Economics, Finance and Administrative Science, 2011-06) Arrieta Posada, Juan Gregorio; Universidad EAFIT. Departamento de Ingeniería de Producción; jarrieta@eafit.edu.co; Gestión de Producción y Logística
In this document we present different aspects that are necessary to perform an excellent administration and control of distribution centers that corporations may have -- If these ideas are implemented correctly in an efficient way, most of the productivity problems in the warehouse could be solved easily -- Thus, it is important to evaluate the products’ activity profile, thelayout of the warehouse and the products’ flow through the distribution center -- The objective of this process is to obtain the conditions of a world class warehouse
Benchmarking about Lean Manufacturing in the textile sector in Medellin
(Journal of Economics, Finance and Administrative Science, 2010-06) Arrieta Posada, Juan Gregorio; Romano Martínez, María Jimena; Botero Herrera, Victoria Eugenia; Universidad EAFIT. Departamento de Ingeniería de Producción; jarrieta@eafit.edu.co; vboteroh@eafit.edu.co; mromanom@eafit.edu.co; Gestión de Producción y Logística
This document shows the results of a benchmarking study among different firms from the clothing industry that seeks to evaluate their degree of implementation in Lean Manufacturing during their respective productive processes -- The study mainly targets firms that produce blue jeans, cotton shirts and t-shirts -- Indeed, this industrial sector in the city of Medellin is highly developed and one of the most dynamic, thus the interest to perform an evaluation in this area -- To achieve the benchmarking, a questionnaire was designed and applied to the different firms that were visited -- The most significant result obtained was that Lean Manufacturing techniques were not prevalent within the general public -- Only those companies with years in the business, exporters or foreign trademarks licensees, were knowledgeable of their application and development
Benchmarking methodology on lean manufacturing in the apparel industry
(Fraunhofer-Verlag, 2011-01-01) Juan Gregorio, A.P.; Victoria Eugenia, B.H.; María Jimena, R.M.; Juan Gregorio, A.P.; Victoria Eugenia, B.H.; María Jimena, R.M.; Universidad EAFIT. Departamento de Ingeniería de Producción; Gestión de Producción y Logística
This project provides the methodology to apply a Benchmarking approach between different companies in the apparel sector, the aim of the project is to evaluate the implementation degree of Lean manufacturing in their productive processes, specifically companies that produce blue jeans, T-shirts and polo shirts. This industry sector is very developed in the city of Medellin and it is one of the most dynamic industries, hence the interest in evaluation. For the Benchmarking methodology development, a questionnaire is needed to be constructed and applied in different companies in the city, the most important result was that, the implementation of Lean manufacturing techniques are not widespread among the industry and only those with big experience as exporters or international brands licensees are more advanced in their application and development.
Biomedical Computer Vision Using Computer Algebra: Analysis of a Case of Rhinocerebral Mucormycosis in a Diabetic Boy
(Springer Berlin Heidelberg, 2010-01-01) Mario C. Vélez-Gallego; Giraldo JO; Universidad EAFIT. Departamento de Ingeniería de Producción; Gestión de Producción y Logística
Computer algebra is applied to biomedical computer vision. Specifically certain biomedical images resulting from a case of rhinocerebral mucormysocis in a diabetic boy are analyzed using techniques in computational geometry and in algebraic-geometric
Clasificación ABC Multicriterio: tipos de criterios y efectos en la asignación de pesos
(2011-11-28) Vélez Gallego, Mario César; Castro Urrego, Jaime Andrés; Castro Zuluaga, Carlos Alberto; Vélez Gallego, Mario César; Castro Urrego, Jaime Andrés; Castro Zuluaga, Carlos Alberto; Universidad EAFIT. Grupo de Investigación Gestión de Producción y Logística; Universidad EAFIT. Departamento de Ingeniería de Producción; ccastro@eafit.edu.co; marvelez@eafit.edu.co; jcastrou@eafit.edu.co; Gestión de Producción y Logística
ABC classification is traditionally performed in companies in order to define and implement an inventory control policy for all the products within the same category -- The classification of products into categories is done according to their importance or relevance for some kind of criteria, usually the consumption or annual usage (for raw materials or spare parts) or demand or annual sales (for finished goods) using the well-know Pareto´s principle -- However, sometimes it is highly recommended and necessary to use additional criteria in order to make a more effective differentiation of stocks -- Therefore, this paper presents a collection of useful criteria for ABC classification; describes its meaning and how it must be measured -- Additionally, an example of a critical stage of a classification ABC with three criteria, shows that depending on the weights assigned and the characteristics of the products included in the classification process, the validity of some criteria are lost in the analysis
Combining LR and 2-opt for scheduling a single machine subject to job ready times and sequence dependent setup times
(Institute of Industrial Engineers, 2014-01-01) Rojas-Santiago, M.; Muthuswamy, S.; Vélez-Gallego, M.C.; Montoya-Torres, J.R.; Universidad EAFIT. Departamento de Ingeniería de Producción; Gestión de Producción y Logística
In this research, the job ready times and sequence-dependent setup times of a single machine scheduling problem are considered with the objective of makespan minimization. As the problem is NP-hard, a Lagrangean Relaxation (LR) approach is proposed to find an initial solution and a heuristic based on 2-opt was implemented to improve it. Extensive computational experiments showed that the proposed combination of LR and 2-opt is effective. Wide range of test problems from 25 to 75 jobs was studied. The performance of the proposed approach was compared with the results from a commercial solver.
Design of a didactic guide for learning in teh area of operations and logistics with the beer game in the software iThink®
(Latin American and Caribbean Journal of Engineering Education, 2011) Peña, Gloria Elena; Rodríguez, Carlos A; Ramírez, Sergio; Universidad EAFIT. Departamento de Ingeniería de Producción; sramire@eafit.edu.co; carodri@eafit.edu.co; gepena@unal.edu.co; Gestión de Producción y Logística
The systems dynamics has charged significant importance as tool of support to the educational processes for the learning --An example is the the Beer Game, which, through the use of the software iThink®, simulates a chain of supplies, which permits the student to take decisions with regard to the behavior of the same one under certain conditions of simulation -- This work presents a didactic guide of the Play of the Beer by means of the use of the software iThink®, which has been developed as a complement in the processes of learning of the students of pregraduated level of Engineering of Production of the EAFIT University in Medellin, Colombia -- It is sought with this experience to develop a strategy that when it be played, the unique one that can create variations in the model is the player and the strategy can vary when be considered that is not throwing the results of form desired -- To be able to play should be determined the values of FAI and FLS that signify respectively; the first one is that so intense responds the inventory to the changes and the second is that weight in the quantity of inventory is found in transit for each position, With these concepts the variables are reinforced that disturb the effect whip in the supply chain
Diseño de un juego serio como herramienta de apoyo para el curso de programación de operaciones
(Asociación Colombiana de Facultades de Ingeniería (ACOFI), 2013-09-24) Carmona González, Guillermo L.; Trefftz Gómez, Helmuth; Universidad EAFIT. Departamento de Ingeniería de Producción; gcarmona@eafit.edu.co; htrefftz@eafit.edu.co; Gestión de Producción y Logística
The difficulty in applying theoretical concepts in real scenarios, little experience, knowledge and deepening low motivation in students, are some of the problems can be observed in some higher education courses -- One cause of this problem is due, in large part, to the traditional teaching-learning process with a heavy emphasis of theory over practice -- On the other side, one can observe a population increasingly habituated to videogames who dedicate large amounts of time to this activity, and besides many do so with motivation -- Video games provide players with risk-free virtual worlds where their decisions have effects with immediate feedback -- This has generated a growing interest in the application of video games with learning objectives and has been called serious games -- The successful application of serious games has been reported in different fields of knowledge, but especially in military areas, social and health -- However, the best of our knowledge, operation scheduling issues no reports of serious games -- The above mentioned reasons explain our interest on the development, and impact evaluation of a video game used as academic tool to motivate the students for the study of operation scheduling while, at the same time, providing a tool in which they can implement theories covered in class -- This paper presents a description of the serious game in its alpha version, the main considerations taken when designing it, general aspects of the development tool and the methodology used for development -- It also presents the results of a pilot of this first version, seeking game improvement and evaluating the students' perceptions about the potential use of games as academic and motivational tools
Games and practical exercises as support to the interactive courses for the Operations and Logistics Management area in the Production Engineering Pregraduated Program of the EAFIT University
(Latin American and Caribbean Journal of Engineering Education, 2010-11-16) Rodríguez, Carlos A.; Ramírez, Sergio A.; Universidad EAFIT. Departamento de Ingeniería de Producción; carodri@eafit.edu.co; sramire@eafit.edu.co; Gestión de Producción y Logística
The following paper introduces the way on how play different games played in the subjects studied in engineering -- These games are a complement to the theory learnt in class and also facilitate students’ learning process. The games goal is to allow the student to have more control of his/her learning process, making it necessary to develop new ways of teaching class -- Teachers and students will be able to find the tools necessary to make the games a true learning process in this paper
GRASP Algorithm to Minimize Makespan in a No-Wait Flow Shop with Batch Processing Machines
(Inst of Industrial Engineers; Cdr edition, 2012-05-19) Muthuswamy; Shanthi; Mario C. Vélez-Gallego; Maya; Jairo; Rojas; Miguel; Universidad EAFIT. Departamento de Ingeniería de Producción; Gestión de Producción y Logística
Given a set of jobs and two Batch Processing Machines (BPMs) in a flow shop environment
Herramienta académica para distribución del almacén según el pick density
(Universidad de Los Andes, 2010-07-23) Arrieta-Posada; Juan Gregorio; Carmona; Guillermo Leon; Rodriguez; D.C.; Ruíz; S.; Universidad EAFIT. Departamento de Ingeniería de Producción; Gestión de Producción y Logística
La distribución de los artículos en el almacén tiene un alto impacto en los costos logísticos de las empresas. Existen diferentes estrategias de distribución para un almacén
Herramienta para enseñanza del modelo (s, Q) mediante simulación en un curso de gestión de inventarios
(Asociación Colombiana de Facultades de Ingeniería (ACOFI), 2013-09-24) Castro Urrego, Jaime A.; Castro-Zuluaga, Carlos A.; Universidad EAFIT. Departamento de Ingeniería de Producción; ccastro@eafit.edu.co; jcastrou@eafit.edu.co; Gestión de Producción y Logística
In recent years, inventory management has become a critical issue within companies because a suitable management of inventories can drive toward improve their competitive advantages -- This paper presents a simulation tool developed in VBA of Microsoft Excel ®, which has the main purpose to help students in their teaching and learning processes of the inventory management theory, in order to enhance the skills and abilities of them in the decision making process related with an effective management of stocks
Herramientas de Producción. Ayudas para el mejoramiento de los procesos productivos
(Fondo Editorial Universidad EAFIT, 2011-05) Arrieta Posada, Juan Gregorio; Universidad EAFIT. Departamento de Ingeniería de Producción; jarrieta@eafit.edu.co; Gestión de Producción y Logística
Herramientas de Producción presenta de manera integrada algunas de las técnicas de mejoramiento de procesos de producción de mayor aplicación en la industria, con el propósito de que el lector comprenda las relaciones que existen entre cada una de ellas y como deben ser implementadas en la industria -- Adicionalmente, se refuerza este enfoque de mejoramiento con casos de trabajo que pueden ser aplicados tanto en la empresa como en la vida diaria -- El libro está dirigido a estudiantes de ingeniería, egresados y profesionales que tengan que ver con las áreas de Administración de Operaciones y mejoramiento de procesos productivos, que deseen conocer y aplicar los temas de 5s, Sistema SMED y Sistema poka-yoke y la Fábrica visual
Herramientas de producción: ayudas para el mejoramiento de los procesos productivos
(Fondo Editorial Universidad EAFIT, 2011-01-01) Juan Gregorio, A.P.; Universidad EAFIT. Departamento de Ingeniería de Producción; Gestión de Producción y Logística
El libro presenta de manera integrada algunas de las técnicas de mejoramiento de procesos productivos de mayor aplicación en la industria, con el propósito de que el lector comprenda las relaciones que existen entre cada una de ellas y cómo deben ser impl

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