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https://hdl.handle.net/10784/28389

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Distance interaction in education processes using a Telepresence tool
(SPRINGER-VERLAG BERLIN, 2010-01-01) Giraldo, F.; Jiménez, A.; Trefftz, H.; Restrepo, J.; Esteban, P.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
Distance interaction among educational communities is becoming increasingly important. Courses and talks are shared among institutions and individuals who are located in different places. The Telepresence tool, developed by Eafit and Universidad del Quindío, permits course sharing among the institutions. Instructors from one institution can teach students of the other one, thereby sharing the positive features of each course. In this paper, we present the recent improvements of the Telepresence tool. We also report on the use of the tool in a Multi-Variable Calculus course, designed in accordance to the Teaching for Understanding (TFU) pedagogical framework. © 2010 Springer Science+Business Media B.V.
RISK MANAGEMENT BASED ON FUZZY LOGIC FOR A FRANCIS TURBINE
(EUROSIS, 2011-01-01) Mejia, Diego Tobon; Hennequin, Sophie; Botero, Francisco; Rezg, Nidhal; Castaneda, Leonel; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
To facilitate the maintenance of hydroelectric groups and ensure the production of electrical energy, we defined a decision making tool to help the construction of maintenance plans by integrating the concept of risk for a Francis turbine currently operating in Colombia. As the risks are generally expressed in terms of human knowledge, it seems very interesting to use fuzzy logic to solve this kind of problems. Moreover, it can also be applied in case of detectable failures (via sensors) or undetectable failures. This work has been done in collaboration with EAFIT University in Colombia.
Improving Student Results in a Statics Course using a Computer-based Training and Assessment System
(IEEE, 2013-01-01) Zapata Rivera, Luis Felipe; Restrepo Ochoa, Jorge Luis; Barbosa Perez, Jaime L.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
One of the main causes of desertion in engineering programs is the poor student academic performance in basic courses. One of these courses is Statics, which is taught at the undergraduate level. Between 2009 and 2011 about 30% of students did not get a satisfactory grade to pass the course and a high percentage of these students deserted from their engineering program at EAFIT University. The evolution of computer systems and the Internet progress have enabled educators to develop software to support teaching and learning processes. For instance, educational software like E-learning platforms now allow teachers and students to interact through collaborative and friendly environments that can result in improvement on student learning outcomes and therefore improvement in their final results. Various learning tools based on problem-based learning approaches have been developed for the Statics area. These systems usually pose problems for students to solve; however, the problems usually used to evaluate and certify student knowledge are different from those used by the students during their training process. This is aimed at focusing students' attention to the use of analytical skills instead of memorizing processes. This paper describes the results of using a computer system to support training and assessment processes to convey concepts related to a Statics course using an existing open source tool and implementing a dynamic assessment generation scheme (i.e., generation of multiple versions of the same problem using algorithms with variables). This system has been used in the Statics courses during two academic periods in 2012 involving the participation of 400 students. The results of this experiment are compared with performance results of students from previous years who used traditional practice and assessment methods such as solving tasks in conventional paper and pencil tests. Results have had a positive impact in student grades and retention.
Improving student results in a statics course using a computer-based training and assessment system
(Institute of Electrical and Electronics Engineers Inc., 2013-01-01) Rivera, L.F.Z.; D. C. Restrepo-Ochoa; Pérez, J.L.B.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
One of the main causes of desertion in engineering programs is the poor student academic performance in basic courses. One of these courses is Statics, which is taught at the undergraduate level. Between 2009 and 2011 about 30% of students did not get a satisfactory grade to pass the course and a high percentage of these students deserted from their engineering program at EAFIT University. The evolution of computer systems and the Internet progress have enabled educators to develop software to support teaching and learning processes. For instance, educational software like E-learning platforms now allow teachers and students to interact through collaborative and friendly environments that can result in improvement on student learning outcomes and therefore improvement in their final results. Various learning tools based on problem-based learning approaches have been developed for the Statics area. These systems usually pose problems for students to solve; however, the problems usually used to evaluate and certify student knowledge are different from those used by the students during their training process. This is aimed at focusing students' attention to the use of analytical skills instead of memorizing processes. This paper describes the results of using a computer system to support training and assessment processes to convey concepts related to a Statics course using an existing open source tool and implementing a dynamic assessment generation scheme (i.e., generation of multiple versions of the same problem using algorithms with variables). This system has been used in the Statics courses during two academic periods in 2012 involving the participation of 400 students. The results of this experiment are compared with performance results of students from previous years who used traditional practice and assessment methods such as solving tasks in conventional paper and pencil tests. Results have had a positive impact in student grades and retention. © 2013 IEEE.
Pronósticos del comportamiento de equipos en mantenimiento, en sistema de bombeo experimental investigation gemieaftt: Utllizar los pronósticos de los indicadores internacionales de Mantenimiento CMD-ßeta-MTTR-MTTB-FMECA-para gestar y operar el mantentmiento
(International Institute of Informatics and Systemics, IIIS, 2014-01-01) Alberto Mora, G.; Jaramillo, J.S.V.; Martínez, J.H.H.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
Pronósticos del comportamiento de equipos en mantenimiento, en sistema de bombeo experimental investigation gemieaftt: Utllizar los pronósticos de los indicadores internacionales de Mantenimiento CMD-ßeta-MTTR-MTTB-FMECA-para gestar y operar el mantentmiento
(International Institute of Informatics and Systemics, IIIS, 2014-01-01) Alberto Mora, G.; Jaramillo, J.S.V.; Martínez, J.H.H.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
[No abstract available]
Revision of TPM implementations cases in Colombia
(Institute of Industrial Engineers, 2014-01-01) Gustavo, A.V.L.; Juan, S.V.L.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
Previous studies about the implementation of Total Productivity Management (TPM) in Colombia have shown that this philosophy makes a competitive company stand out internationally, and even makes the difference between survival and death for many of them. Several years after these findings, it is necessary to verify if TPM is still having a leading role, or if it has been discarded or replaced by other strategies or techniques. This article shows the main findings and up-to-date case studies about the implementation of Total Productivity Management in Colombia, which were found in research projects at Universidad EAFIT from 2003 until today. The questions addressed in this paper are: Was TPM established in Colombian companies as a current administration and management trend? What are the main obstacles in the implementation of TPM? Which strategies are followed to overcome these obstacles?
Items' difficulty level determination based on a Statics test with parameters variation
(IEEE, 2014-01-01) Restrepo Cadavid, Andres; Restrepo Ochoa, Jorge Luis; Barbosa Perez, Jaime L.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
Looking for the improvement of the students' learning, the engineering school of EAFIT University is currently developing an evaluation and training system. In this system, each student has the option of doing ``dynamic'' exercises in a specific field of a subject. Whenever a student uses the system, an exercise is generated with different parameters and values. The mentioned system (Evaluation System) has been used in the last semesters, achieving the improvement in the students' comprehension and learning level of the Statics subject. The system under development, allows the students to train themselves in different topics of the subject and, at the same time, it allows the teachers to evaluate the learning process. Based on the fact that in the course assessments, an exam with different parameters and values is presented every time a student accesses the system, it is possible that some students present tests with different complexity levels. Therefore, the test could be considered inequitable for some people. This paper presents an analysis of the difficulty level of a test generated with the system. The test was applied to two different groups of students which are taking the course in the 2014-1 semester. The first group took a test where the items' values and parameters were not changed; and the second one, took a test where the items' values and parameters change for each student. Based on the obtained results, a statistical study is made which intends to determine the difficulty and discrimination level of each of the test items, both for the dynamics parameters test and the fixed parameters test in order to finally determine how much varies the items' difficulty due to the parameters variation. This will help to generate more equitable tests in the future for the assessment of a group of students that are taking the course.
Cómo pronosticar conexactitud la demanda futura de un producto, bien o servicio: Caso real international
(International Institute of Informatics and Systemics, IIIS, 2014-01-01) Alberto Mora, G.; Claves, P.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
[No abstract available]
Assessing interactions among students geographically disperse during multinational design projects
(AMER SOC ENGINEERING EDUCATION, 2014-01-01) Esparragoza, Ivan E.; Lascano Farak, Sheila Katherine; Ocampo, Jared Roberto; Vigano, Roberto; Duque-Rivera Duque-Rivera, Jorge W.; Rodriguez, Carlos A.; Universidad EAFIT. Departamento de Ingeniería de Producción; Tecnologías para la Producción
The new business model and global operations of many enterprises have brought new challenges for engineers working in multinational companies. These new trends and the need of educating world-class engineers with global competencies have opened opportunities for new educational models to expose students to international experiences to start developing those capabilities. One pedagogical activity used to promote global competencies is the participation of students in multinational design projects, which is a problem-based learning approach in an international setting, where students get immersed in the solution of an engineering design task while they work in teams and collaborate with international partners. Consequently, a collaborative network of institutions from the Americas and Italy has developed and executed collaborative multinational design projects as part of academic experiences for their students. The main goal of these projects is to foster international collaboration and to offer an opportunity to the students to develop professional skills through international teamwork effort in the solution of a design problem. However, a real challenge of this practice has been to create an effective interaction among the students participating in this type of projects and to maintain the flow of information, and student engagement in the project and in their learning. Therefore, this paper reports the work related to an assessment approach used to monitor students' interaction in multinational collaborative projects. The main objectives of the proposed assessment tool are: (a) to evaluate the interaction among the students (frequency, quantity and quality); (b) to determine the value of social interaction in the flow of the interaction; (c) to determine the impact of interaction in the development of the project.
Application of product line commonality index (PCI) in a family of products
(TRANS TECH PUBLICATIONS LTD, 2014-01-01) Oliver Rubio, M.; Julian Mora, O.; Alvaro Guarin, G.; Pablo Carrizosa, I.; Universidad EAFIT. Departamento de Ingeniería de Producción; Tecnologías para la Producción
Currently many companies base their marketing strategy around a family of products. Thus, they regularly add new variations to products in order to meet changing market needs, or to attract new customers. Although the basic functionality remains unchanged across products, new features, aesthetic appearance and technologies are incorporated in each new product. This if it is not checked, can generate the "complexity of the product," which leads to a loss of productivity or quality. Thus, the effective management of product variations in design and manufacturing is challenging. The key is minimizing the non-value added variations through models within a range of options without limiting customers. This article discusses the factors that contribute to the "complexity of the product" and this is done through the product line commonality index (PCI) [1], which measures the level of common parts in a product family. A case study of bicycle frame displays its implementation and functionality. The index shows the possibility that the products in a family share parts effectively (modularity) and reduces the total number of parts (multifunctionality). © (2014) Trans Tech Publications, Switzerland.
Developing an experimental case in aluminium foils 1100 to determine the maximum angle of formability in a piece by Dieless-SPIF process
(IOP PUBLISHING LTD, 2014-01-01) Gabriel, Paramo; Adrian, Benitez; Universidad EAFIT. Departamento de Ingeniería de Producción; Tecnologías para la Producción
Incremental sheet forming by the method of single point incremental forming Dieless-SPIF, is a widely studied process, experimented and developed in countries with high manufacturing technologies, with friendly costs when the productive configuration in a productivity system is based in small production batches. United states, United kingdom and France lead this type of studies and cases, developing various proof with experimental geometries, different from the national environment such as Colombia, Bolivia, Chile, Ecuador and Peru where this process where discretely studied. Previously mentioned, it pretends develop an experimental case of a particular geometry, identifying the maximum formability angle of material permissible for the forming of a piece in one pass, the analysis of forming limit curve (FLC), with the objective to emphasizes in this innovative method based in CAD-CAM technologies, compare with other analogous process of deformation sheet metal like embossing, take correct decisions about the viability and applicability of this process (Dieless) in a particular industrial piece, which responses to the necessities of productive configurations mentioned and be highly taken like a manufacturing alternative to the other conventional process of forming sheet metal like embossing, for systems with slow batches production. © Published under licence by IOP Publishing Ltd.
Application Design Methodology for Building a Device Foil Incremental Deformation by Double Point Method Dieless-DPIF
(Institute of Electrical and Electronics Engineers Inc., 2014-01-01) Bermudez, G.P.; Garcia, J.A.; Lozano, A.B.; Universidad EAFIT. Departamento de Ingeniería de Producción; Tecnologías para la Producción
The new manufacturing technologies of the world are increasingly demanding the design and redesign of new alternative products and processes that can be useful and low cost term. The alternative solution and methodology to innovate in manufacturing processes of incremental sheet metal forming is shown in this paper. Through the methodology Product design specification (PDS) as a practical and effective solution, describes the design step, specific requirements, materials and building process to achieve a device's architecture for a sheet metal deformation by two-point method Die less - DPIF. The selection, simplification and functionality becomes a fundamental objective for design engineers. © 2014 IEEE.
El diagnóstico y los planes de trabajo como un requisito para la implantación exitosa de Lean Manufacturing
(Latin American and Caribbean Consortium of Engineering Institutions (LACCEI Inc), 2014-07-24) Rodriguez, C.; echeverri cartagena, carlos; López Cañas, C.A.; Universidad EAFIT. Departamento de Ingeniería de Producción; Tecnologías para la Producción
Este artículo presenta los resultados de ejecución de un diagnóstico inicial sobre el estado de implementación de Lean Manufacturing (Manufactura Esbelta) en un grupo de catorce empresas participantes del proyecto denominado Programa de Gestión del Sector
Items' difficulty level determination based on a Statics test with parameters variation
(Institute of Electrical and Electronics Engineers Inc., 2015-01-01) Cadavid, A.R.; Ochoa, J.L.R.; Pérez, J.L.B.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
Looking for the improvement of the students' learning, the engineering school of EAFIT University is currently developing an evaluation and training system. In this system, each student has the option of doing 'dynamic' exercises in a specific field of a subject. Whenever a student uses the system, an exercise is generated with different parameters and values. The mentioned system (Evaluation System) has been used in the last semesters, achieving the improvement in the students' comprehension and learning level of the Statics subject. The system under development, allows the students to train themselves in different topics of the subject and, at the same time, it allows the teachers to evaluate the learning process. Based on the fact that in the course assessments, an exam with different parameters and values is presented every time a student accesses the system, it is possible that some students present tests with different complexity levels. Therefore, the test could be considered inequitable for some people. This paper presents an analysis of the difficulty level of a test generated with the system. The test was applied to two different groups of students which are taking the course in the 2014-1 semester. The first group took a test where the items' values and parameters were not changed; and the second one, took a test where the items' values and parameters change for each student. Based on the obtained results, a statistical study is made which intends to determine the difficulty and discrimination level of each of the test items, both for the dynamics parameters test and the fixed parameters test in order to finally determine how much varies the items' difficulty due to the parameters variation. This will help to generate more equitable tests in the future for the assessment of a group of students that are taking the course. © 2014 IEEE.
Fuzzy Inference System for Modelling Failure Modes in a Ropeway for Massive Transportation
(ATLANTIS PRESS, 2015-01-01) Villa, Luisa F.; Quintero Montoya, O. L.; Castaneda, L.; Meja, G.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
This work uses Fuzzy Inference Systems to model the failure modes of the Metrocable (ropeway massive transportation system in Medellin-Colombia) and to this aim, handle the concept of Condition Based Maintenance (CBM) for the automation of maintenance routine. Maintenance procedures in this massive transportation ropeway system have been designed from manufacturer and improved by expert knowledge trough years of operation, so they can be modeled by fuzzy models. The following work is part of the project ``Diagnostic system of the interface grip-cable of the Metrocable'', developed between the entities COLCIENCIAS, Metro de Medellin and Universidad EAFIT.
Instrumented study of the wheel-Rail interaction
(JVE International, 2015-01-01) Zóltowski, B.; Castaneda, L.; Zóltowski, M.; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
This article describes a measurement method whit strain gages, which allows measure the vertical force independently of the lateral force in the wheel - Track interface of a railway. It also shows the obtained results from the implementation of this method to measure the forces in a commercial railway of the railway system. © JVE International Ltd.
Barriers and success factors in lean construction implementation-survey in pilot context
(Lean Construction, 2015-07-31) Cano, Sandra; Botero- B, Luis-F; Delgado, Jonathan; RUBIANO, OSCAR; Universidad EAFIT. Departamento de Ingeniería Civil; Gestión de la Construcción
The study identifies a set of barriers and critical success factors (CSF) involved in the implementation of Lean Construction (LC) through three phases: Literature's Collection, with analysis and obtained information processing
DEVELOPMENT OF AN AUTOMATIC PLOTTER FOR GENERATING EXERCISES FOR STATICS COURSE IN ENGINEERING
(IATED-INT ASSOC TECHNOLOGY EDUCATION A& DEVELOPMENT, 2016-01-01) Restrepo Ochoa, Jorge Luis; Barbosa Perez, Jaime Leonardo; Arenas Berrio, Julian; Universidad EAFIT. Departamento de Ingeniería Mecánica; Estudios en Mantenimiento (GEMI)
In the virtual platform for Statics course of Engineering School at EAFIT University it was implemented an automatic plotter for generating exercises to study truss type structures and beams in civil, mechanical and production engineering. Through graphics changes, range of variables and requested questions, the student is provided with different exercises each time that they log in to the platform, achieving the personalization in the learning and evaluation process. The plotters for the structures are developed in JAVA language, and the questions generated are converted into a compatible format with the management learning system MOODLE. Since 2012, the engineering students' population who have enrolled the Statics course is 1909 and all of them have solved exercises generated with automatic plotters. From the design of an automatic generator an unlimited questions bank is obtained to implement in the virtual platform, it allows to get security when applying evaluation tests due to the fact that each person solves a different question. The present study shows the design and programming methodology used to make plotters so it can be extended to others virtual environments in basic sciences. Future works consists in making automatic generators that allow to define difficulty levels to guide the students in a progressive study in the course topics.
PLM in a didactic environment: The path to smart factory
(Inderscience Enterprises Ltd., 2016-01-01) Bedolla, J.S.; Orozco, J.M.; De Jesús Guarín Grisales, Á.; D'Antonio, G.; Chiabert, P.; Universidad EAFIT. Departamento de Ingeniería de Producción; Tecnologías para la Producción
Universities around the world are teaching PLM following different strategies but most of them are limited to design applications. This paper presents a didactic manufacturing plant where design and production are managed in a PLM environment. During the course, students are exposed to the complexity of managing the production of a modular chess set while at the same time they are asked to fulfil design requirements and meet production, quality and cost goals. Course description and the achieved results are analysed thoroughly. This is the first step to realise a 'learning by doing' modular course in smart factories: future practitioners must be skilled in this theme, which plays a key role for the worldwide competition. The path towards such a course is also presented. Copyright © 2016 Inderscience Enterprises Ltd.

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