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UPCommons - E-prints UPC Universitat Politècnica de Catalunya (83,371 recursos)
E-prints UPC cobreix dues finalitats: per una banda, és el dipòsit institucional de la UPC que recull els articles de revista, les comunicacions de congrés i els reports de recerca generats en les activitats de recerca del personal docent i investigador de la universitat; per l'altra, és una eina que permet accelerar la producció científica, allotjant versions de documents prèvies a la publicació en una revista o a les actes d’un congrés.

Ponències/Comunicacions de congressos

Mostrando recursos 1 - 20 de 281

1. Delimiting the linear area on the problems of assembly line balancing with minimal ergonomic risk - Bautista Valhondo, Joaquín; Batalla García, Cristina; Alfaro Pozo, Rocío
In this paper we propose to incorporate some working conditions to the assembly lines. For this, used a mathematical model to solve the assembly line balancing problem whose objective is minimizing the ergonomic risk, imposing the limitation of the cycle time, number of workstations and the maximum linear area for each station. A study is presented through a case study that corresponds to an assembly line from Nissan’s plant in Barcelona.

2. Productivity improvement, considering legal conditions and Just In Time principles in the mixed-model Sequencing problem - Bautista Valhondo, Joaquín; Alfaro Pozo, Rocío; Batalla García, Cristina
A new mathematical model to solve the Mixed-Model Sequencing Problem with Work overload minimization is formulated. The model incorporates productive, social and legal aspects in order to move the theory problem closer to the actual industrial environments. Specifically, there are considered the variation of work pace of workers throughout the workday to increase the completed work; the conditions of occupancy level of workers imposed by the collective agreements; and the idea of keeping constant the production mix through the sequence leading both to a balance between the required workloads at stations and regular consumption of components. Indeed, by means of...

3. A conceptual model to manage supply sequences in automotive industry for Nissan Barcelona - Bautista Valhondo, Joaquín; Fortuny Santos, Jordi
This paper presents an action research experience in Douki-Seisan in cooperation with the Nissan Factory in Barcelona. Three suppliers are involved in the experience to improve the way they perform synchro deliveries of parts to Nissan. Supplier issues are analysed and a decision making tool is developed for a supplier.

4. Give me a KIBS: Policy instruments mediating the relationship between service knowledge firms and sustainable manufacturing supply chains - Lafuente González, Esteban Miguel; Vaillant, Yancy; Vendrell Herrero, Ferran
In addition to product offering, the provision of advanced services is of growing importance for manufacturing businesses to maintain competitive advantage, a phenomenon best known as servitization. Mainstream servitization literature follows different approaches to describe the success of manufacturing companies in integrating services with their corporate clients. However, literature is still silent on how new manufacturing companies, which cannot internalize service offering, generate these services through Knowledge Intensive Business Service firms (KIBS). This research contributes to this literature stream by exploring how relevant industry characteristics—in our case, stock of manufacturing firms and total number of freights transported—mediate the relationship between...

5. Incorporando condiciones laborales a problemas de secuencias en líneas de productos mixtos - Bautista Valhondo, Joaquín; Alfaro Pozo, Rocío; Batalla García, Cristina
Partiendo de una variante de un problema de secuenciación en líneas de productos mixtos (MMSP-W: Mixed-Model Sequencing Problem with Workload Minimisation), se proponen dos nuevos modelos que incorporan condiciones laborales a los puestos de trabajo de la línea. El primero tiene en cuenta la limitación de la saturación de los puestos de trabajo, mientras que el segundo contempla, además, la activación de los operarios a lo largo de la jornada laboral. Se realizan sendas experiencias computacionales, empleando un caso de estudio de la planta de motores de Nissan en Barcelona, con dos propósitos: (1) estudiar la repercusión que ocasiona la...

6. Diseño y equilibrado de líneas de montaje minimizando el riesgo ergonómico - Bautista Valhondo, Joaquín; Batalla García, Cristina; Alfaro Pozo, Rocío
Se establece un sistema de medición del riesgo ergonómico generado por las operaciones requeridas en una línea de montaje. Se formula un modelo matemático para el problema de equilibrado de líneas de ensamblaje, con el objetivo de minimizar el riesgo ergonómico de la línea y considerando el número de puestos de trabajo, además de un conjunto de restricciones de carácter temporal y espacial. Se realiza una aplicación del modelo mediante una experiencia computacional basada en un caso de estudio de la planta de ensamble de motores de Nissan en Barcelona. El experimento mide el impacto generado por el incremento del...

7. Las habilidades sociales del docente universitario: una formación hacia la competencia interpersonal - Gómez Soberón, José Manuel Vicente; Berbegal Mirabent, Jasmina; Cañabate Carmona, Antonio; Farrerons Vidal, Óscar; Huerta Carrillo, María; Montero Mercadé, Lídia; Mora Giné, Mercè; Santos Boada, Germán; Torre Martínez, María del Rocío de la; Corral Manuel de Villena, Ignacio de
Desde el ICE de la UPC se ha planteado una nueva formación dirigida a todo el profesorado basada en la adquisición de competencias docentes. Uno de los módulos de formación puesto en marcha trabaja la adquisición de la competencia interpersonal. Hasta la fecha se han realizado dos cursos a lo largo del año 2013. En este artículo se detallan los contenidos tratados en el módulo y las experiencias desarrolladas por algunos de los profesores que lo pusieron en práctica. Promoted by the ICE of the UPC has been set a new training for all teachers based on the acquisition of teaching...

8. NTIGen: a software for generating Nissan based instances for time and space assembly line balancing - Chica Serrano, Manuel; Cordón García, Oscar; Damas Arroyo, Sergio; Bautista Valhondo, Joaquín
The time and space assembly line balancing problem (TSALBP) is a re- alistic multiobjective version of assembly line balancing industrial problems in- volving the joint optimization of conflicting criteria such as the cycle time, the number of stations, and the area of these stations. For this family of problems there is not any repository where researchers and practitioners can o bt ain realistic problem instances also containing information on mixed products plans. In this contribution we introduce a new TSALBP instance software generator that can produce problem instances having industrial real-like features. This generator is called NTIGen (Nissan TSALBP Instance GENerator) since it is...

9. Students' viewpoint on engineering subjects taugh in English - Heras Cisa, F. Xavier de las; Lao Luque, Concepción; Fortuny Santos, Jordi; Alsina Aubach, Montserrat
The European Educational Institutions have the challenge and the commitment to enhance multilingual competence and teaching curricular subjects in a foreign language is seen as one of the most promising alternatives. In that context, professors teaching different engineering subjects at the School of Engineering of the UPC at Manresa (EPSEM) have been involved in projects aiming at analyzing the current linguistic situation and developing some on-line open access materials using CLIL as a strategy. They formed the u-Linguatech Research Group on Multilingual Communication in Science and Technology in order to provide such resources in an effective and efficient way. In...

10. Evaluación de las oficinas de transferencia universitarias colombianas respecto a su labor como intermediarias en el mercado del conocimiento - Olaya, Erika Sofia; Duarte, Oscar German; Berbegal Mirabent, Jasmina; Simó Guzmán, Pep
Este artículo analiza el desempeño de las Oficinas de Transferencia Universitarias Colombianas (OTRI), respecto al modelo de la Triple Hélice y su rol como intermediarias para la valorización y comercialización del conocimiento. El resultado de este trabajo permitirá determinar los factores identificados en la literatura y que pueden influir en el éxito de la labor de estas oficinas y al mismo tiempo analizar su funcionamiento interno, importancia y grado de madurez como interfaz entre el mundo académico y el tejido empresarial colombiano. Este trabajo se estructura en tres fases. La primera es el estudio bibliométrico, mediante el cual se identifican...

11. A multiobjective genetic algorithm and robustness information function for time and space assembly line balancing - Chica Serrano, Manuel; Cordón García, Oscar; Damas Arroyo, Sergio; Bautista Valhondo, Joaquín
The time and space assembly line balancing problem (TSALBP) is a realistic multiobjective version of assembly line balancing industrial problems involving the joint optimization of conflicting criteria such as the cycle time, the number of stations, and the area of these stations. However, the existing problem formulation does not consider the industrial scenario where the demand of a set of mixed products is variable and uncertain. In this contribution we introduce a novel robustness function to measure the robustness of the line configuration when the production plans demand changes. The function is used as additional a posteriori information for the...

12. Simulación de la dinámica de un almacén distribuidor de equipos de medida de energía eléctrica destinada al consumo - Alfaro Pozo, Rocío; Perpiñán Pérez, Lourdes; Bautista Valhondo, Joaquín; Rami Rivas, Rubén
Postprint (published version)

13. Heuristics and hiperheuristics for sequencing mixed model assembly lines minimizing work overload - Bautista Valhondo, Joaquín; Cano, J.
There are different approaches for the mixed model sequencing problem on assembly lines. In this paper the goal of minimizing work overload is treated. Since solve this problem optimally is difficult, we test constructive procedures, local search and a new hiper heuristic proce dure.

14. Ergonomics as basis for a decision support system in the printing industry - Mateo Doll, Manuel; Álvarez Casado, Enrique; Rodríguez Mondelo, Pedro Manuel; Tarral, Marc
Postprint (published version)

15. A refined GRASP algorithm for the extended car sequencing problem - Lacovic, Elvira; Chica Serrano, Manuel; Damas Arroyo, Sergio; Bautista Valhondo, Joaquín; Cordón García, Oscar
In this study, we investigate the performance of GRASP (Greedy Randomized Adaptive Search Procedure) mataheuristic that has been used for solving extended optimization version of CSP (Car Sequencing Problem) with respect to different parameters and proposed modifications for the algorithm. While maximum appearance frequency of option in segment is usually a hard constraint, in this study we treat all capacity constraints as soft constraints by giving them same priority when evaluating candidates for the position in the sequence, in order to achieve more balanced sequences as initial solutions for the local improvement phase. The main disadvantage of the described greedy algorithm...

16. Algoritmos GRASP para el equilibrado de líneas con riesgo ergonómico mínimo - Bautista Valhondo, Joaquín; Alfaro Pozo, Rocío; Batalla García, Cristina; Llovera Laborda, Sara
Resumen - Se presenta un problema de equilibrado de líneas de montaje con ciclo compatible y número fijo de estaciones con el objetivo de minimizar el máximo riesgo ergonómico presente en las estaciones de trabajo. Tras la formu lación de un modelo matemático para el problema, se proponen procedimientos GRASP para su resolución. Los procedimientos incorporan un algoritmo greedy para regularizar el riesgo ergonómico así como diferentes tipos de mejora local. Después, se realiza una experiencia computacional sobre un caso de estudio de la planta de motores de Nissan en Barcelona, considerando diferentes diseños de línea en relación al número de puestos de trabajo. Los resultados ofrecidos por GRASP se comparan con los mejores obtenid os para dicho...

17. L'entreprise multinationale dans l'industrie maquiladora: un catalyseur de développement industriel ou une enclave? Réflexions à partir de l'étude d'une entreprise taïwanaise du secteur de l'habillement implantée au Nicaragua (1998-2007) - Van Wunnik, Lucas Philippe
Le Nicaragua, le pays le plus pauvre d’ Amérique Centrale, accueille de nombreux établissements asiatiques (Taiwan, Corée du Sud et Hong Kong) du secteur de l’habillement dans ses zones franches industrielles d’exportation. La question que nous posons est si ces entreprises de l’industrie maquiladora – une industrie d’exportation qui bénéficie d’un traitement fiscal et tarifaire préférentiel – contribuent à déclencher un développement industriel durable du pays d’ac cueil. L’article tente d’apporter quelques éléments de réponse à cette question en étudiant l’évolution (1998-2007) des établissements nicaraguayens (employant, au total, environ 16.000 travailleurs en 2007) d’une entreprise taïwanaise.

18. The differentiated impact of role models and social fear of failure over the entrepreneurial activities of rural youths - Lafuente González, Esteban Miguel; Vaillant, Yancy; Gómez, Eduardo
The main objective of this study is to determine the differential impact of certain socio-cultural variables (such as entrepreneurial self-confidence, role models and fear of failure) on the entrepreneurial process of Spanish rural youths. In consonance with the new rural policy paradigm, the European Commission and the OECD are proposing entrepreneurship as a tool for economic diversification and endogenous rural development. Entrepreneurship is associated in rural areas with economic vitality and prosperity. Entrepreneurship in rural areas becomes a means for capturing and optimizing the true natural, social and human capital of a territory as well as a source of opportunity...

19. Developing professional skills at tertiary level: A model to integrate competencies across the curriculum - Sánchez Carracedo, Fermín; Soler Cervera, Antonia; López Álvarez, David; Martín Escofet, Carme; Ageno Pulido, Alicia; Belanche Muñoz, Luis Antonio; Cabré Garcia, José M.; Cobo Valeri, Erik; Farré Cirera, Rafael; García Almiñana, Jordi; Marès Martí, Pere
In the context of the European Higher Education Area, curriculum design needs to be based on the defined competencies of each degree programs, including both domain specific and professional competencies. In this educational context, developing students’ professional skills poses a new challenge we need to face. The present work proposes a model to globally develop professional skills in an Engineering degree program. Based on competency maps, this model allows careful analysis, revision and iteration for an effective integration of professional skills. We define each competency in terms of “dimensions” (or sub-skills), which are further defined according to three-level objectives. Competency...

20. Evaluation and assessment of professional skills in the Final Year Project - Sánchez Carracedo, Fermín; Climent Vilaró, Joan; Corbalán González, Julita; Fonseca Casas, Pau; García Almiñana, Jordi; Herrero Zaragoza, José Ramón; Llinàs Audet, Francisco Javier; Rodríguez Hontoria, Horacio; Sancho Samsó, María Ribera; Alier Forment, Marc; Cabré Garcia, José M.; López Álvarez, David
In this paper, we present a methodology for Final Year Project (FYP) monitoring and assessment that considers the inclusion of the professional skills required in the particular engineering degree. This proper monitoring and clear evaluation framework provides the student with valuable support for the project implementation as well as for improving the quality of the projects, thereby reducing the academic drop-out rate. The proposed methodology has been implemented at the Barcelona School of Informatics at the Universitat Politècnica de Catalunya - BarcelonaTech. The FYP is structured around three milestones: project definition, project monitoring and project completion. Skills are assigned to each...

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