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rss_1.0 Recursos de colección

UPCommons - E-prints UPC Universitat Politècnica de Catalunya (78,099 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 270

1. 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)

2. 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.

3. 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)

4. 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...

5. 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...

6. 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.

7. 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...

8. 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...

9. 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...

10. A methodology to introduce sustainability into the Final Year Project to foster sustainable engineering projects - López Álvarez, David; Sánchez Carracedo, Fermín; Vidal López, Eva María; Pegueroles Vallés, Josep R.; Alier Forment, Marc; Cabré Garcia, José M.; García Almiñana, Jordi; García, Helena
The introduction of sustainability skills into higher education curricula is a natural effect of the increasing importance of sustainability in our daily lives. Topics like green computing, sustainable design or environmental engineering have become part of the knowledge required by today’s engineers. Furthermore, we strongly believe that the introduction of this skill will eventually enable future engineers to develop sustainable products, services and projects. The Final Year Project is the last academic stage facing students and a step towards their future professional engineering projects. As such, it constitutes a rehearsal for their professional future and an ideal opportunity for reflecting...

11. Foreign direct investment as engine of economic development in peripheral economies. What can we learn from the study of two different cases: the maquiladora subsidiary (Nicaragua) and a textile manufacturing subsidiary in (Albania) - Van Wunnik, Lucas Philippe; Kacani, Jolta
Using the analysis of two apparently very different cases, a Taiwanese maquiladora subsidiary of the garment industry (Nien Hsing Textile Co.) in Nicaragua and an Italian subsidiary in Albania, we try to verify the existence of the benefits attributed by many host governments to inward manufacturing foreign direct investment as engine of development in peripheral economies. In each case, we study three specific questions: (1) the technological transfer from the subsidiary, (2) the mobility potential of the manufacturing activities of the subsidiary, and (3) the evolution of the quality of the subsidiary (integration in the territory and complexity of the...

12. Improving communication skills: students' viewpoint on a content & language integrated learning project - Alsina Aubach, Montserrat; Fortuny Santos, Jordi; Lao Luque, Concepción; Heras Cisa, F. Xavier de las
The development of the European Higher Education Area (EHEA) scheme in Spanish universities implies a greater participation of the students in their own process of learning and competence-based teaching. Competences are the ability to apply knowledge, skills and attitudes and one of such competences is communication. Students must be able to communicate using their mother tongue, but they should be able to use a foreign language, especially English, too. This paper presents strategies applied in the School of Engineering at Manresa (EPSEM) (Barcelona), in order to improve students’ communication skills in English. An experimental research has been conducted, focusing on...

13. Improving communication skills: students' viewpoint on a content & language integrated learning project - Alsina Aubach, Montserrat; Fortuny Santos, Jordi; Lao Luque, Concepción; Heras Cisa, F. Xavier de las
The development of the European Higher Education Area (EHEA) scheme in Spanish universities implies a greater participation of the students in their own process of learning and competence-based teaching. Competences are the ability to apply knowledge, skills and attitudes and one of such competences is communication. Students must be able to communicate using their mother tongue, but they should be able to use a foreign language, especially English, too. This paper presents strategies applied in the School of Engineering at Manresa (EPSEM) (Barcelona), in order to improve students’ communication skills in English. An experimental research has been conducted, focusing on...

14. Students' research on lean and green - Luján Blanco, Itziar; Fortuny Santos, Jordi
This paper reports on the contribution of students to a research project. Its distinct characteristics are the relation between teaching and research, the early involvement of undergraduate students in research and the aim of raising students' environmental awareness. A group of students taking a compulsory course on Operations Management were asked to survey companies on the existence of synergic relations between lean manufacturing and environmental performance, which is the research topic of a Ph.D. candidate. The research began with the design of a structured questionnaire. The students interviewed operations managers in manufacturing companies. Since this subject is part of a...

15. Ergonomic risk minimisation in assembly line balancing - Bautista Valhondo, Joaquín; Batalla García, Cristina; Alfaro Pozo, Rocío
In this work it is presented a variant for the assembly line balancing that considers simultaneously production conditions and labour conditions. Specifically, a new mathematical model is formulated to solve the assembly line balancing problem. The objective of this model is minimising the maximum ergonomic risk, given a specific cycle time and a number of workstations. This affords the evaluation of the ergonomic risk impact on the number of workstations of the line through an application linked to the Nissan plant of engines, located in Barcelona.

16. Programación de tareas con recursos limitados mediante meta-algoritmos de exploración de entornos - Bautista Valhondo, Joaquín; Pereira Gude, Jordi; De la Rosa Herrero, Marcela; Companys Pascual, Ramón
La secuenciación de tareas o actividades con limitación de recursos (RCPSP: resource-constrained project scheduling problem) es un problema combinatorio clásico que aparece en diversos campos como la gestión de proyectos productivos y logísticos. El problema consiste en establecer el orden de lanzamiento de las actividades y la asignación de recursos que suponga menor tiempo de ocupación del sistema. Las heurísticas greedy basadas en reglas de prioridad son las más empleadas para su resolución, también se han propuesto procedimientos de búsqueda local con definiciones clásicas de vecindario válidas para cualquier problema de secuencias. Aquí se proponen dos procedimientos híbridos que combinan...

17. SIRUS: Un sistema de ayuda a la decisión para la recogida selectiva de residuos urbanos - Bautista Valhondo, Joaquín; Companys Pascual, Ramón
SIRUS, abreviatura de Sistema Integrado de Recogida Urbana Selectiva, es un software que surge y se desarrolla bajo la actividad de transferencia de tecnología denominada Proyecto integral de gestión de residuos urbanos en el municipio de Sant Boi de Llobregat: convenio de colaboración establecido entre el Ajuntament y la Universitat Politècnica de Catalunya (UPC). La función del sistema es ayudar a la toma de decisiones de diseño y de dirección de operaciones relativas a la recogida de residuos urbanos en un municipio. SIRUS facilita las labores periódicas de localización de áreas de aportación y contenedores, así como el diseño de...

18. Meta-heurística ACO (Ant Colony Optimization) para la resolución de problemas en líneas de producción - Bautista Valhondo, Joaquín; Bretón Blas, Javier; Fernández Ros, José Antonio; De la Rosa Herrero, Marcela
La meta-heurística ACO (Ant Colony Optimization) es un procedimiento heurístico para la resolución de problemas de optimización discreta basado en el comportamiento de las hormigas. Sus principales características son: (1) la utilización de

19. Aplicación de la CLP al problema de secuencia regulares con restricciones en una cadena de montaje de automóviles - Bautista Valhondo, Joaquín; Companys Pascual, Ramón; Vila, Albert; Pereira Gude, Jordi; Mateo Doll, Manuel
Las líneas de montaje de automóviles presentan problemas de diseño y programación cada vez más complejos generados por la diversificación del producto mediante opciones ofertadas sobre un modelo base. El problema de secuenciación de unidades mixtas en una única línea de producción con el objetivo de atenuar las variaciones de las tasas de consumo de recursos (componentes y cargas de trabajo) ha recibido atención creciente durante los últimos años. En el presente trabajo se presenta una visión de distintos enfoques recogidos en la literatura y se establece una generalización parcial de algunas variantes del problema mediante el CORV (constrained output...

20. What do we feel about archetypes: self-reports and physiological signals - Huang-Ming, Chang; Ivonin, Leonid; Díaz Boladeras, Marta; Català Mallofré, Andreu; Chen, Wei; Rauterberg, Mattias
In research on emotion, presenting affective stimuli has been believed to be an effective and reliable technique for emotion elicitation. Instead of collecting stimuli for pre-defined emotions, we propose to develop stimuli based on their symbolic meanings. We adopted archetypal symbolism as a standard to edit eight movie clips of archetypes as a new set of affective stimuli. These stimuli were used in an experiment for emotion elicitation. Participants' emotional responses toward these stimuli of archetypes were measured by the self-report technique and the physiological measurement. The results of linear discriminant analysis show that physiological measurement is more robust than...

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