http://hdl.handle.net/2117/3883 Wed, 19 Jun 2013 14:06:59 GMT 2013-06-19T14:06:59Z webmaster.bupc@upc.edu Universitat Politècnica de Catalunya. Servei de Biblioteques i Documentació no http://hdl.handle.net/2117/19365 Title: Apoyo institucional del ICE-UPC a las dinámicas de innovación docente: Proyecto RIMA Authors: Martínez Martínez, María del Rosario; Salán Ballesteros, Maria Núria; Adam, Araceli; Darnell, Isabel; Corral Manuel de Villena, Ignacio de; Gallego Fernández, María Isabel; Portet Cortés, Esperanza; Torra Bitlloch, Immaculada Abstract: En los últimos años, desde el Instituto de Ciencias de la Educación de la Universidad Politécnica de Cataluña (ICE - UPC), se ha incentiva do l a Innovación Docente mediante múltiples iniciativas. Desde 2007, con la creación del Proyecto RIMA (Investigación e Innovación en Metodologías de Aprendizaje - Recerca i Innovació en Metodologies d’Aprenentatge) y de su entorno virtual asociado (www.upc.ed u/rima), el apoyo a la innovación docente se completa con un proyecto coordinado, que facilita la confluencia de esfuerzos de grupos de profesorado con interés en este ámbito. En la presente comunicación y partiendo de los resultados y experiencias de los últimos años en adaptación e implantación de metodologías de innovación docente en la UPC, se realiza una reflexión sobre la acogida e incidencia de esta iniciativa en la adaptación a los nuevos planes de estudio del Espacio Europeo de E ducación Superior ( EEES), y en el planteamiento de nuevos objetivos institucionales referidos tanto al tema de la participación en innovación docente como a las nuevas metodologías y a la mejora de la calidad docente. Tue, 21 May 2013 17:25:49 GMT http://hdl.handle.net/2117/19365 2013-05-21T17:25:49Z Martínez Martínez, María del Rosario; Salán Ballesteros, Maria Núria; Adam, Araceli; Darnell, Isabel; Corral Manuel de Villena, Ignacio de; Gallego Fernández, María Isabel; Portet Cortés, Esperanza; Torra Bitlloch, Immaculada no En los últimos años, desde el Instituto de Ciencias de la Educación de la Universidad Politécnica de Cataluña (ICE - UPC), se ha incentiva do l a Innovación Docente mediante múltiples iniciativas. Desde 2007, con la creación del Proyecto RIMA (Investigación e Innovación en Metodologías de Aprendizaje - Recerca i Innovació en Metodologies d’Aprenentatge) y de su entorno virtual asociado (www.upc.ed u/rima), el apoyo a la innovación docente se completa con un proyecto coordinado, que facilita la confluencia de esfuerzos de grupos de profesorado con interés en este ámbito. En la presente comunicación y partiendo de los resultados y experiencias de los últimos años en adaptación e implantación de metodologías de innovación docente en la UPC, se realiza una reflexión sobre la acogida e incidencia de esta iniciativa en la adaptación a los nuevos planes de estudio del Espacio Europeo de E ducación Superior ( EEES), y en el planteamiento de nuevos objetivos institucionales referidos tanto al tema de la participación en innovación docente como a las nuevas metodologías y a la mejora de la calidad docente. http://hdl.handle.net/2117/19311 Title: Energy-efficiency and security issues in the Cisco Nexus virtual distributed switching Authors: Peterson, Benjamin; Ricciardi, Sergio; Nin Guerrero, Jordi Abstract: Virtualization technologies have brought with them the promise of increased security and energy saving. Such was the case with the Cisco Nexus virtual switching environment. However, possible security issues of this environment have not been evaluated and the achievable energy savings have not been quantified yet. In particular, it was necessary to investigate whether the security vulnerabilities existing in physical switches had persisted into the virtual environment. This paper provides an evaluation of the energy saving and an analysis of the security implications of the Cisco Nexus virtual distributed switching environment. Thu, 16 May 2013 14:10:16 GMT http://hdl.handle.net/2117/19311 2013-05-16T14:10:16Z Peterson, Benjamin; Ricciardi, Sergio; Nin Guerrero, Jordi no Nexus 1000V, energy consumption, security in switching virtualization, virtual architectures Virtualization technologies have brought with them the promise of increased security and energy saving. Such was the case with the Cisco Nexus virtual switching environment. However, possible security issues of this environment have not been evaluated and the achievable energy savings have not been quantified yet. In particular, it was necessary to investigate whether the security vulnerabilities existing in physical switches had persisted into the virtual environment. This paper provides an evaluation of the energy saving and an analysis of the security implications of the Cisco Nexus virtual distributed switching environment. http://hdl.handle.net/2117/19302 Title: Digital rights and privacy policies management as a service Authors: Delgado Mercè, Jaime; Llorente Viejo, Silvia; Rodríguez Luna, Eva Abstract: Controlling, protecting and managing access to multimedia content could be a difficult task if a system was not prepared for it. To solve this situation minimizing the impact on the existing system, we propose the use of a modular architecture which provides digital rights and privacy policies management features. It can be integrated just invoking some web service calls, depending on which services are needed. To show its use, we present several scenarios where we have successfully integrated it, like distribution of content for digital terrestrial television broadcasting and access to personal health information. Thu, 16 May 2013 13:15:06 GMT http://hdl.handle.net/2117/19302 2013-05-16T13:15:06Z Delgado Mercè, Jaime; Llorente Viejo, Silvia; Rodríguez Luna, Eva no Application scenario, Digital rights, Digital Rights Management, Digital terrestrial television broadcasting, Existing systems, Modular architectures, Multimedia contents, Personal health, Privacy policies Controlling, protecting and managing access to multimedia content could be a difficult task if a system was not prepared for it. To solve this situation minimizing the impact on the existing system, we propose the use of a modular architecture which provides digital rights and privacy policies management features. It can be integrated just invoking some web service calls, depending on which services are needed. To show its use, we present several scenarios where we have successfully integrated it, like distribution of content for digital terrestrial television broadcasting and access to personal health information. http://hdl.handle.net/2117/17730 Title: Implementing mobile applications with the MIPAMS content management platform Authors: Maroñas Borras, Xavier; Llorente Viejo, Silvia; Rodríguez Luna, Eva; Delgado Mercè, Jaime Abstract: New mobile devices (pda’s, tablets) permit the implementation of new business models as they are always connected and provide multimedia capabilities for capturing images, videos, music or even conversations. Together with an architecture for the secure management and distribution of multimedia content called MIPAMS, we propose a mobile business model with the implementation of a mobile application based on iOS (Apple operating system for mobile devices) for publishing added value content captured with a mobile device. Wed, 13 Feb 2013 15:21:01 GMT http://hdl.handle.net/2117/17730 2013-02-13T15:21:01Z Maroñas Borras, Xavier; Llorente Viejo, Silvia; Rodríguez Luna, Eva; Delgado Mercè, Jaime no Mobile applications, MIPAMS, iOS, Android New mobile devices (pda’s, tablets) permit the implementation of new business models as they are always connected and provide multimedia capabilities for capturing images, videos, music or even conversations. Together with an architecture for the secure management and distribution of multimedia content called MIPAMS, we propose a mobile business model with the implementation of a mobile application based on iOS (Apple operating system for mobile devices) for publishing added value content captured with a mobile device. http://hdl.handle.net/2117/17722 Title: Standards for query formalization in mobile visual search Authors: Tous Liesa, Rubén; Delgado Mercè, Jaime Abstract: The research around visual search is gaining relevance due to the evolution in the generation and usage of digital images. A signifi cant push comes from the mobile visual search topic, due to the widespread proliferation of camera enabled mobile devices. The new scenarios are increasing the urgency of novel solutions for challenging problems such as the effi cient coding of compact visual descriptors and the interoperability of distributed visual search query interfaces. Currently, almost every visual search service off ers a different retrieval interface and image metadata description format, preventing unified and effi cient access. In this context, standardization groups such as ISO/IEC SC29/WG11 (MPEG) and ISO/IEC SC29/WG1 (JPEG) have been working to create uni fied interfaces for image repositories. In one hand, MPEG provides the ISO/IEC 15938-12 (MPEG Query Format, MPQF), which standardizes a query language for multimedia repositories and has also started an activity for standardizing compact descriptors for visual search (CDVS). On the other hand, JPEG is now finishing the ISO/IEC 24800 (JPSearch), which provides solutions to the image metadata interoperability problem. This paper analyzes how these standardization activities can be combined to satisfy the requirements posed by the mobile visual search scenario, which are their limitations and which are the necessary actions to be taken by the standardization committees in order to overcome them. Wed, 13 Feb 2013 14:08:58 GMT http://hdl.handle.net/2117/17722 2013-02-13T14:08:58Z Tous Liesa, Rubén; Delgado Mercè, Jaime no Visual search, CBIR, Metadata, Interoperability, Image, Information retrieval, Standards, JPSearch, MPQF The research around visual search is gaining relevance due to the evolution in the generation and usage of digital images. A signifi cant push comes from the mobile visual search topic, due to the widespread proliferation of camera enabled mobile devices. The new scenarios are increasing the urgency of novel solutions for challenging problems such as the effi cient coding of compact visual descriptors and the interoperability of distributed visual search query interfaces. Currently, almost every visual search service off ers a different retrieval interface and image metadata description format, preventing unified and effi cient access. In this context, standardization groups such as ISO/IEC SC29/WG11 (MPEG) and ISO/IEC SC29/WG1 (JPEG) have been working to create uni fied interfaces for image repositories. In one hand, MPEG provides the ISO/IEC 15938-12 (MPEG Query Format, MPQF), which standardizes a query language for multimedia repositories and has also started an activity for standardizing compact descriptors for visual search (CDVS). On the other hand, JPEG is now finishing the ISO/IEC 24800 (JPSearch), which provides solutions to the image metadata interoperability problem. This paper analyzes how these standardization activities can be combined to satisfy the requirements posed by the mobile visual search scenario, which are their limitations and which are the necessary actions to be taken by the standardization committees in order to overcome them. http://hdl.handle.net/2117/17017 Title: ATENEA, la primera plataforma de campus virtual con certificado de accesibilidad Authors: Guasch Murillo, Daniel; Àlvarez Suau, Maria Hortènsia; Gallego Fernández, María Isabel; Villas Espitia, Francisco Angel; Sánchez Ricart, Oriol; Ribot Ballabriga, Enric; Recio Calderó, Ferran Abstract: The Universitat Politècnica de Catalunya-BarcelonaTech (UPC), in order to provide people with various disabilities equal access to information systems, has promoted the project “Infoaccessibilitat” coordinated by the Chair Accessibility, framed within the agreement of collaboration with UPC IMSERSO (Institute for the Elderly and Social Services) and the ONCE Foundation. This study describes a project undertaken to ensure that e-learning platform of UPC is accessible to everyone. Mon, 26 Nov 2012 08:37:17 GMT http://hdl.handle.net/2117/17017 2012-11-26T08:37:17Z Guasch Murillo, Daniel; Àlvarez Suau, Maria Hortènsia; Gallego Fernández, María Isabel; Villas Espitia, Francisco Angel; Sánchez Ricart, Oriol; Ribot Ballabriga, Enric; Recio Calderó, Ferran no The Universitat Politècnica de Catalunya-BarcelonaTech (UPC), in order to provide people with various disabilities equal access to information systems, has promoted the project “Infoaccessibilitat” coordinated by the Chair Accessibility, framed within the agreement of collaboration with UPC IMSERSO (Institute for the Elderly and Social Services) and the ONCE Foundation. This study describes a project undertaken to ensure that e-learning platform of UPC is accessible to everyone. http://hdl.handle.net/2117/16249 Title: Anonymizing data via polynomial regression Authors: Nin Guerrero, Jordi; Pont Tuset, Jordi; Medrano Gracia, Pau; Larriba Pey, Josep; Muntés Mulero, Víctor Abstract: The amount of confidential information accessible through the Internet is growing continuously. In this scenario, the improvement of anonymizing methods becomes crucial to avoid revealing sensible information of individuals. Among several protection methods proposed, those based on the use of linear regressions are widely utilized. However, there is not a reason to assume that linear regression is better than using more complex polynomial regressions. In this paper, we present PoROP-k, a family of anonymizing methods able to protect a data set using polynomial regressions. We show that PoROP-k not only reduces the loss of information, but it also obtains a better level of protection compared to previous proposals based on linear regressions. Fri, 13 Jul 2012 08:23:34 GMT http://hdl.handle.net/2117/16249 2012-07-13T08:23:34Z Nin Guerrero, Jordi; Pont Tuset, Jordi; Medrano Gracia, Pau; Larriba Pey, Josep; Muntés Mulero, Víctor no Anonymizing methods, PoROP-k, Polynomial regression The amount of confidential information accessible through the Internet is growing continuously. In this scenario, the improvement of anonymizing methods becomes crucial to avoid revealing sensible information of individuals. Among several protection methods proposed, those based on the use of linear regressions are widely utilized. However, there is not a reason to assume that linear regression is better than using more complex polynomial regressions. In this paper, we present PoROP-k, a family of anonymizing methods able to protect a data set using polynomial regressions. We show that PoROP-k not only reduces the loss of information, but it also obtains a better level of protection compared to previous proposals based on linear regressions. http://hdl.handle.net/2117/16248 Title: On method-specific record linkage for risk assessment Authors: Nin Guerrero, Jordi; Herranz Sotoca, Javier; Torra i Reventós, Vicenç Abstract: Nowadays, the need for privacy motivates the use of methods that permit us to protect a microdata file both minimizing the disclosure risk and preserving the statistical utility. Nevertheless, research is usually focused on how data utility is preserved, and much less research effort is dedicated to the study of the tools that an intruder might use to compromise the privacy of the data or, in other words, to increase the disclosure risk. Record linkage is a standard mechanism used to measure the disclosure risk of a microdata protection method. In this paper we present some improvements for the (standard) distance based record linkage. In particular, we test our improvements to evaluate the disclosure risk of rank swapping, which is higher than what was believed up to now. We will also present the results of the application of this approach to microaggregation. Fri, 13 Jul 2012 07:56:15 GMT http://hdl.handle.net/2117/16248 2012-07-13T07:56:15Z Nin Guerrero, Jordi; Herranz Sotoca, Javier; Torra i Reventós, Vicenç no Statistical data privacy, Record linkage, Disclosure risk Nowadays, the need for privacy motivates the use of methods that permit us to protect a microdata file both minimizing the disclosure risk and preserving the statistical utility. Nevertheless, research is usually focused on how data utility is preserved, and much less research effort is dedicated to the study of the tools that an intruder might use to compromise the privacy of the data or, in other words, to increase the disclosure risk. Record linkage is a standard mechanism used to measure the disclosure risk of a microdata protection method. In this paper we present some improvements for the (standard) distance based record linkage. In particular, we test our improvements to evaluate the disclosure risk of rank swapping, which is higher than what was believed up to now. We will also present the results of the application of this approach to microaggregation. http://hdl.handle.net/2117/16238 Title: Fuzzy measures and integrals in re-identification problems Authors: Nin Guerrero, Jordi; Torra i Reventós, Vicenç Abstract: In this paper we give an overview of our approach of using aggregation operators, and more specifically, fuzzy integrals for solving re-identification problems. We show that the use of Choquet integrals are suitable for some kind of problems. Thu, 12 Jul 2012 09:34:59 GMT http://hdl.handle.net/2117/16238 2012-07-12T09:34:59Z Nin Guerrero, Jordi; Torra i Reventós, Vicenç no Record linkage, Fuzzy integrals, OWA operators, Data cleaning, Privacy preserving data mining In this paper we give an overview of our approach of using aggregation operators, and more specifically, fuzzy integrals for solving re-identification problems. We show that the use of Choquet integrals are suitable for some kind of problems. http://hdl.handle.net/2117/15135 Title: Nuevos entornos alrededor del campus virtual ATENEA de la Universidad Politécnica de Cataluña Authors: Gallego Fernández, María Isabel; Torra Bitlloch, Immaculada; Villas Espitia, Francisco Angel; Giner, Elisabet; Morte, Joaquim Abstract: En este artículo se describe el servicio ATENEA, campus virtual de soporte a la docencia de la UPC, en su totalidad. Con el objetivo de mejorar el servicio se han diseñado una serie de entornos destinados a cubrir algunas de las necesidades específicas detectadas. Se hace especial énfasis en la descripción de algunos de dichos entornos como la gestión de los cursos históricos (ATENEA Saurus) o el entorno de pruebas de nuevas funcionalidades (ATENEA Labs). Se ofrecen también algunos datos de utilización del campus que dan una idea de su dimensión. Finalmente se describen algunos de las últimas funcionalidades incorporadas al servicio como es el proyecto de accesibilidad de ATENEA, que permite el acceso a ATENEA de personas con discapacidad visual, o el proyecto de movilidad que permite el acceso a ATENEA mediante un dispositivo móvil. Tue, 14 Feb 2012 17:51:14 GMT http://hdl.handle.net/2117/15135 2012-02-14T17:51:14Z Gallego Fernández, María Isabel; Torra Bitlloch, Immaculada; Villas Espitia, Francisco Angel; Giner, Elisabet; Morte, Joaquim no Campus Virtual, Aprendizaje electrónico, Plataforma Moodle En este artículo se describe el servicio ATENEA, campus virtual de soporte a la docencia de la UPC, en su totalidad. Con el objetivo de mejorar el servicio se han diseñado una serie de entornos destinados a cubrir algunas de las necesidades específicas detectadas. Se hace especial énfasis en la descripción de algunos de dichos entornos como la gestión de los cursos históricos (ATENEA Saurus) o el entorno de pruebas de nuevas funcionalidades (ATENEA Labs). Se ofrecen también algunos datos de utilización del campus que dan una idea de su dimensión. Finalmente se describen algunos de las últimas funcionalidades incorporadas al servicio como es el proyecto de accesibilidad de ATENEA, que permite el acceso a ATENEA de personas con discapacidad visual, o el proyecto de movilidad que permite el acceso a ATENEA mediante un dispositivo móvil. http://hdl.handle.net/2117/14700 Title: A cryptographic solution for private distributed simple meeting scheduling Authors: Herranz Sotoca, Javier; Matwin, Stan; Meseguer González, Pedro; Nin Guerrero, Jordi Abstract: Meeting scheduling is a suitable application for distributed computation motivated by its privacy requirements. Previous work on this problem have considered some cryptographic and conceptually clear approach to solve a simple case of Meeting Scheduling, even achieving complete privacy. Fri, 20 Jan 2012 11:59:25 GMT http://hdl.handle.net/2117/14700 2012-01-20T11:59:25Z Herranz Sotoca, Javier; Matwin, Stan; Meseguer González, Pedro; Nin Guerrero, Jordi no Meeting scheduling, Privacy, Homomorphic public key encryption Meeting scheduling is a suitable application for distributed computation motivated by its privacy requirements. Previous work on this problem have considered some cryptographic and conceptually clear approach to solve a simple case of Meeting Scheduling, even achieving complete privacy. http://hdl.handle.net/2117/13408 Title: Algunos ejemplos de evaluación del grupo GRAPA-RIMA-Universitat Politècnica de Catalunya Authors: Martínez Martínez, María del Rosario; Cadenato Matia, Ana María; Gallego Fernández, María Isabel; Jordana Barnils, José; Sánchez Robert, Francesc Josep Abstract: Uno de los objetivos del grupo de interés GRAPA (GRup d’Avaluació de la Práctica Acadèmica) perteneciente al proyecto RIMA (Recerca i Innovació en Metodologies de l’Aprenentatge) del Institut de Ciencies de l’Educació (ICE) de la Universitat Politècnica de Catalunya (UPC), es determinar cuáles son los criterios para considerar que una actividad de evaluación puede considerarse como un buen ejemplo. En la presente comunicación se recogen diversos ejemplos que cumplen los requisitos para ser considerados buenas prácticas de evaluación. Dichos ejemplos son fruto de la experiencia de diversos componentes del grupo, que durante diferentes cursos han ido incorporando mejoras en el aula para ir definiendo estos requisitos hasta consolidar dichas experiencias, de modo que en la actualidad pueden representar modelos a seguir en otras disciplinas dentro de los estudios universitarios. Mon, 03 Oct 2011 11:42:37 GMT http://hdl.handle.net/2117/13408 2011-10-03T11:42:37Z Martínez Martínez, María del Rosario; Cadenato Matia, Ana María; Gallego Fernández, María Isabel; Jordana Barnils, José; Sánchez Robert, Francesc Josep no Uno de los objetivos del grupo de interés GRAPA (GRup d’Avaluació de la Práctica Acadèmica) perteneciente al proyecto RIMA (Recerca i Innovació en Metodologies de l’Aprenentatge) del Institut de Ciencies de l’Educació (ICE) de la Universitat Politècnica de Catalunya (UPC), es determinar cuáles son los criterios para considerar que una actividad de evaluación puede considerarse como un buen ejemplo. En la presente comunicación se recogen diversos ejemplos que cumplen los requisitos para ser considerados buenas prácticas de evaluación. Dichos ejemplos son fruto de la experiencia de diversos componentes del grupo, que durante diferentes cursos han ido incorporando mejoras en el aula para ir definiendo estos requisitos hasta consolidar dichas experiencias, de modo que en la actualidad pueden representar modelos a seguir en otras disciplinas dentro de los estudios universitarios. http://hdl.handle.net/2117/13246 Title: Semantic blocking for record linkage Authors: Nin Guerrero, Jordi; Muntés Mulero, Víctor; Martínez Bazán, Norbert; Larriba Pey, Josep Abstract: Record Linkage (RL) is an important component of data cleaning and integration and data processing in general. For years, many efforts have focused on improving the performance of the RL process, either by reducing the number of record comparisons or reducing the number of attribute comparisons, which reduces the computational time, but increases the amount of error. However, the real bottleneck of RL is the post-process, where the results have to be reviewed by experts that decide which pairs or groups of records are real links and which are false hits. In this paper we show that exploiting the semantic relationships (e.g. foreign key), established between one or more data sources, makes it possible to find a new sort of semantic blocking method that improves the number of hits and reduces the amount of review effort. Mon, 19 Sep 2011 15:15:29 GMT http://hdl.handle.net/2117/13246 2011-09-19T15:15:29Z Nin Guerrero, Jordi; Muntés Mulero, Víctor; Martínez Bazán, Norbert; Larriba Pey, Josep no Data processing, Semantic information, Blocking algorithms, Record linkage, Data integration, Data cleansing Record Linkage (RL) is an important component of data cleaning and integration and data processing in general. For years, many efforts have focused on improving the performance of the RL process, either by reducing the number of record comparisons or reducing the number of attribute comparisons, which reduces the computational time, but increases the amount of error. However, the real bottleneck of RL is the post-process, where the results have to be reviewed by experts that decide which pairs or groups of records are real links and which are false hits. In this paper we show that exploiting the semantic relationships (e.g. foreign key), established between one or more data sources, makes it possible to find a new sort of semantic blocking method that improves the number of hits and reduces the amount of review effort. http://hdl.handle.net/2117/12942 Title: A mobile Scenario for Electronic Publishing based on the MIPAMS Architecture Authors: Delgado Mercè, Jaime; Llorente Viejo, Silvia; Rodríguez Luna, Eva; Torres Padrosa, Víctor Abstract: This paper describes several scenarios for the management of digital media, focusing on electronic publishing from mobile environments. The solution proposed in those scenarios is based on MIPAMS (Multimedia Information Protection And Management System), a service-oriented Digital Rights Management (DRM) platform, which enables the creation, registration and distribution of multimedia content in a secure way, respecting intellectual property rights. The particularity of the mobile scenario with respect to others is the limited capability of mobile devices. A specific use case has been identified for the mobile environment and a new system, based on MIPAMS, has been designed for the electronic publishing environment. Tue, 12 Jul 2011 17:42:14 GMT http://hdl.handle.net/2117/12942 2011-07-12T17:42:14Z Delgado Mercè, Jaime; Llorente Viejo, Silvia; Rodríguez Luna, Eva; Torres Padrosa, Víctor no This paper describes several scenarios for the management of digital media, focusing on electronic publishing from mobile environments. The solution proposed in those scenarios is based on MIPAMS (Multimedia Information Protection And Management System), a service-oriented Digital Rights Management (DRM) platform, which enables the creation, registration and distribution of multimedia content in a secure way, respecting intellectual property rights. The particularity of the mobile scenario with respect to others is the limited capability of mobile devices. A specific use case has been identified for the mobile environment and a new system, based on MIPAMS, has been designed for the electronic publishing environment. http://hdl.handle.net/2117/11880 Title: Suport al professorat en el procés d'adaptació de les noves titulacions de grau Authors: Torra Bitlloch, Immaculada; Corral Manuel de Villena, Ignacio de; Gallego Fernández, María Isabel; Martínez Martínez, María del Rosario; Portet Cortés, Esperanza; Pérez Cabrera, María José; Adam Salvatierra, Araceli; Villas Espitia, Francisco Angel Wed, 16 Mar 2011 13:32:48 GMT http://hdl.handle.net/2117/11880 2011-03-16T13:32:48Z Torra Bitlloch, Immaculada; Corral Manuel de Villena, Ignacio de; Gallego Fernández, María Isabel; Martínez Martínez, María del Rosario; Portet Cortés, Esperanza; Pérez Cabrera, María José; Adam Salvatierra, Araceli; Villas Espitia, Francisco Angel no