Un lustro evaluando la Competencia Transversal “Aprendizaje Permanente”

[ES] La asignatura Transductores e Instrumentación Acústica, del Grado en Ingeniería de Sistemas de Telecomunicación, Sonido e Imagen, de la Escuela Politécnica Superior de Gandia, es punto de control de la Competencia Transversal “Aprendizaje Permanente” desde hace cinco años. En este trabajo se muestra cómo se ha puesto en marcha utilizando trabajos técnicos, las decisiones tomadas y su enfoque, los materiales desarrollados y su evolución, los resultados obtenidos y conclusiones. Se presenta un análisis DAFO final sobre la adquisición de esta competencia.[EN] The subject Transducers and Acoustic Instrumentation, of the Degree in Engineering of Systems of Telecommunication, Sound and Image, of the Escola Politècnica Superior de Gandia, is checkpoint of the Transversal Competence “Permanent Learning” from five years ago. This paper shows how it has been the set up using technical projects, the decisions we have taken and approach, the materials developed and their evolution, the results obtained and conclusions. It is also presented a SWOT analysis about the acquisition of this competence.Alba Fernández, J.; Del Rey Tormos, R.; Torregrosa Cabanilles, C. (2021). Un lustro evaluando la Competencia Transversal “Aprendizaje Permanente”. En IN-RED 2020: VI Congreso de Innovación Educativa y Docencia en Red. Editorial Universitat Politècnica de València. 898-909. https://doi.org/10.4995/INRED2020.2020.12011OCS89890

Non-Markovian Methods in Glass Transition

[EN] A model for the heterogeneity of local dynamics in polymer and other glass-forming materials is provided here. The fundamental characteristics of the glass transition phenomenology emerge when simulating a condensed matter open cluster that has a strong interaction with its heterogeneous environment. General glass transition features, such as non-exponential structural relaxations, the slowing down of relaxation times with temperature and specific off-equilibrium glassy dynamics can be reproduced by non-Markovian dynamics simulations with the minimum computer resources. Non-Markovian models are shown to be useful tools for obtaining insights into the complex dynamics involved in the glass transition phenomenon, including whether or not there is a need for a growing correlation length or the relationship between the non-exponentiality of structural relaxations and dynamic heterogeneity.The APC was funded by the Spanish Ministry of Science, Innovations, and Universities through the RTI2018-097862-B-C21 Project (including the FEDER financial support). CIBER-BBN is an initiative funded by the VI National R&D&I Plan 2008¿2011, Iniciativa Ingenio 2010, Consolider Program. CIBER Actions are financed by the Instituto de Salud Carlos III with assistance from the European Regional Development Fund.Torregrosa Cabanilles, C.; Molina Mateo, J.; Sabater I Serra, R.; Meseguer Dueñas, JM.; Gómez Ribelles, JL. (2020). Non-Markovian Methods in Glass Transition. Polymers. 12(9):1-14. https://doi.org/10.3390/polym12091997S11412

Aprendizaje basado en proyectos: Primera experiencia en la asignatura de Física del Grado en Ingeniería de Telecomunicación, Sonido e Imagen

[EN] This paper presents an implementation of the project based learning methods to Introductory Physics courses of the Telecommunication, Sound and Image Engineering Degree. This first project starts at the last lessons of the subject, devoted to magnetic field and electromagnetic induction. It has been organized in terms of practical projects that the students can choose voluntarily. Here we show how this active methodology was organized, from the context, aims, previous questions, procedures, planning, types of activities, working groups, until the evaluation and conclusions[ES] Esta comunicación trata sobre la prueba de aplicación del aprendizaje basado en proyectos en la asignatura de Física del Grado en Ingeniería de Telecomunicación, Sonido e Imagen. Se realiza esta primera experiencia donde el último bloque temático dedicado al campo magnético y a la inducción magnética se articula en forma de proyectos que los alumnos eligen de forma voluntaria. En la comunicación se resumen cómo se ha articulo esta metodología activa, desde el contexto, objetivos, preguntas motrices, enunciado, planificación, tipos de actividades, interdependencia, valoración y conclusiones.Los autores agradecen al Vicerrectorado de Estudios, Calidad y Acreditación y al Instituto de Ciencias de la Educación de la Universidat Politècnica de València la concesión del Proyecto de Innovación y Mejora Educativa en la convocatoria 2014 “A02/14 Metodologías activas en aprendizaje multidisciplinar. Protocolo de creación de catálogos o mapas de motivación de título” que permite tener financiación para la presentación de este trabajo.Alba Fernández, J.; Torregrosa Cabanilles, C.; Rey Tormos, RMD. (2015). Aprendizaje basado en proyectos: Primera experiencia en la asignatura de Física del Grado en Ingeniería de Telecomunicación, Sonido e Imagen. En In-Red 2015 - CONGRESO NACIONAL DE INNOVACIÓN EDUCATIVA Y DE DOCENCIA EN RED. Editorial Universitat Politècnica de València. https://doi.org/10.4995/INRED2015.2015.1591OC

Fluctuations of conformational mobility of macromolecules around the glass transition

[EN] The heterogeneity of local dynamics in disordered systems is behind some key features of glass transition. In order to improve our understanding of the molecular dynamics in disordered systems in the vicinity of the glass transition, different parameters have been proposed to quantitatively describe dynamical heterogeneity. In the case of polymers, free volume models relate the macromolecular mobility to the free or accessible volume. The relationship between dynamic heterogeneity and fluctuations of accessible volume seems straightforward. In the present work, the heterogeneity of local dynamics in polymeric systems is analyzed by computer simulation with the bond fluctuation model. The value of the accessible volume around each polymer chain is evaluated from a snapshot or static structure at each system state, resulting in a distribution of accessible volume that reflects system heterogeneity. The relationship between the average value and the standard deviation of free volume distributions at different temperatures fits amaster curve for different systems, regardless of the specific inter- and intramolecular interaction potentials that define each material. The dynamic slowdown around the glass transition is accompanied by a clear evolution of the mean value and shape of the accessible free volume distribution. The relative fluctuation of the dynamically accessible volume has been used as a parameter to quantitatively describe heterogeneity. The fluctuation varies with temperature with remarkable differences between the liquid and glassy states of the systems studied, presenting a peak at the glass transition temperature, which can be interpreted as a reflection of the distribution of local glass transition temperatures.The support from the Ministry of Economy and Competitiveness (Spain) through Project No. MAT2016-76039-C4-1-R (including the FEDER financial support) is gratefully acknowledged. R.S.S. acknowledges the support of the Ministry of Education, Culture and Sports (Spain) through the program "Estancias de movilidad de profesores e investigadores seniores en centros extranjeros de ensenanza superior e investigacion 2016 under Grant No. PRX16/00208". CIBER-BBN is an initiative funded by the VI National R&D&I Plan 2008-2011, Iniciativa Ingenio 2010, Consolider Program. CIBER Actions are financed by the Instituto de Salud Carlos III with assistance from the European Regional Development Fund.Torregrosa Cabanilles, C.; Molina Mateo, J.; Sabater I Serra, R.; Meseguer Dueñas, JM.; Gómez Ribelles, JL. (2018). Fluctuations of conformational mobility of macromolecules around the glass transition. Physical Review E. 97(6):062605-1-062605-7. https://doi.org/10.1103/PhysRevE.97.062605S062605-1062605-797

Computer simulation of the heterogeneity of segmental dynamics inamorphous polymers

The heterogeneity of local segmental dynamics in a polymer system is analyzed by computer simulation with the Bond Fluctuation Model. A different approach is proposed based on the concept of Dynamically Accessible Volume (DAV) due to the difficulties encountered in the characterization of this heterogeneity by means of the distribution of relaxation times. A DAV value is assigned to each polymer chain as the fraction of cells in its surroundings that could be occupied in one Monte Carlo Step. In this way it is possible to relate the mobility of a chain with the accessible volume around it, due to the relationship between DAV and diffusion coefficient. As temperature decreases in equilibrium the DAV distribution shifts towards lower values, its width decreases and the number of frozen molecules increases. The methodology proposed also provides a way of characterizing the evolution of segmental dynamics distribution in out of equilibrium states below glass transition temperatures.The authors would like to acknowledge the support provided by the Conselleria d'Educacio of the Generalitat Valenciana through the GV/2009/033 project. The translation of this paper was funded by the Universidad Politecnica de Valencia, Spain.Molina Mateo, J.; Torregrosa Cabanilles, C.; Sabater I Serra, R.; Meseguer Dueñas, JM.; Gómez Ribelles, JL. (2013). Computer simulation of the heterogeneity of segmental dynamics inamorphous polymers. Journal of Non-Crystalline Solids. 362:175-179. https://doi.org/10.1016/j.jnoncrysol.2012.11.034S17517936

Relaxation in non-Markovian models: From static to dynamic heterogeneity

[EN] Glass transition processes have often been explained in terms of wide distributions of relaxation times. By means of a simple stochastic model we here show how dynamic heterogeneity is the key to the emergence of the glass transition. A non-Markovian model representing a small open region of the amorphous material was previously shown to reproduce the time and thermal characteristic behavior of supercooled liquids and glasses. Due to the interaction of the open regions with their environment, the temperature dependence of the equilibrium relaxation times differs from the featureless behavior of the relaxation times of closed regions, whose static disorder does not lead to a glass transition, even with wider distributions of equilibrium relaxation times. The dynamic heterogeneity of the open region produces a glass transition between two different regimes: a faster-thanArrhenius and non-diverging growth of the supercooled liquid relaxation times and an average Arrhenius behavior of the ideal glass. The Kovacs' expansion gap was studied by evaluating the nonequilibrium distribution of relaxation times after the temperature quenches.Funding for open access charge: CRUE-Universitat Polit`ecnica de Val`encia. RSS and JMM acknowledge the Spanish Ministry of Science, Innovations and Universities through the RTI2018-097862-B-C21 Project (including the FEDER financial support). CIBER-BBN is an initiative funded by the VI National R&D&I Plan 2008-2011, Iniciativa Ingenio 2010, Consolider Program. CIBER Actions are financed by the Instituto de Salud Carlos III with assistance from the European Regional Development Fund.Torregrosa Cabanilles, C.; Molina Mateo, J.; Sabater I Serra, R.; Meseguer Dueñas, JM.; Gómez Ribelles, JL. (2022). Relaxation in non-Markovian models: From static to dynamic heterogeneity. Journal of Non-Crystalline Solids. 576. https://doi.org/10.1016/j.jnoncrysol.2021.12124512124557

Bio-Nanocomposite Hydrogel Based on Zinc Alginate/Graphene Oxide: Morphology, Structural Conformation, Thermal Behavior/Degradation, and Dielectric Properties

[EN] Bio-nanocomposite hydrogels based on sodium alginate (SA) as polymer matrix and graphene oxide (GO) nanosheets with zinc as crosslinking agent were synthesized with the aim of incorporating the intrinsic properties of their constituents (bioactivity and antimicrobial activity). Thus, stable and highly interconnected networks were obtained from GO nanosheets dispersed in SA matrices through interactions with low amounts of zinc. The GO nanosheets were successfully incorporated into the alginate matrix in the form of a complex nano-network involving different interactions: Bonds between alginate chains induced by Zn ions (egg box structure), interactions between GO nanosheets through Zn ions and hydrogen bonds between alginate chains, and GO nanosheets. The molecular interactions and morphology were confirmed by Fourier-transform infrared spectroscopy and transmission electron microscopy. The composite's structural organization showed enhanced thermal stability. The glass transition temperature shifted to a higher temperature due to the reduced mobility induced by additional crosslinking bonds after incorporating the GO nanosheets and Zn into the polymer matrix. Finally, the dielectric behavior revealed that charge carrier mobility was hampered by the compact structure of the nanonetwork, which reduced conductivity. The combined properties of these nanocomposite hydrogels make them attractive biomaterials in the field of regenerative medicine and wound care since both surface bioactivity and antibacterial behavior are two critical factors involved in the success of a biomaterial.This research was funded by the Spanish Ministry of Science, Innovations and Universities through the RTI2018-097862-B-C21 Project (including the FEDER financial support). A.S.-A. also acknowledges the Fundacion Universidad Catolica de Valencia San Vicente Martir though Grant No 2019-231-003UCV. CIBER-BBN (Centro de Investigacion Biomedica en Red, Bioingenieria, Biomateriales y Nanomedicina) is an initiative funded by the VI National R&D&I Plan 2008-2011, Iniciativa Ingenio 2010, Consolider Program. CIBER Actions are financed by the Instituto de Salud Carlos III with assistance from the European Regional Development Fund.Sabater I Serra, R.; Molina Mateo, J.; Torregrosa Cabanilles, C.; Andrio-Balado, A.; Meseguer Dueñas, JM.; Serrano-Aroca, Á. (2020). Bio-Nanocomposite Hydrogel Based on Zinc Alginate/Graphene Oxide: Morphology, Structural Conformation, Thermal Behavior/Degradation, and Dielectric Properties. Polymers. 12(3):1-16. https://doi.org/10.3390/polym12030702S11612

Novel Semi-Interpenetrated Polymer Networks of Poly(3-Hydroxybutyrate-co-3-Hydroxyvalerate)/Poly (Vinyl Alcohol) with Incorporated Conductive Polypyrrole Nanoparticles

[EN] This paper reports the preparation and characterization of semi-interpenetrating polymer networks (semi-IPN) of poly(3-hydroxybutirate-co-3-hydroxyvalerate), PHBV, and poly (vinyl alcohol), PVA, with conductive polypirrole (PPy) nanoparticles. Stable hybrid semi-IPN (PHBV/PVA 30/70 ratio) hydrogels were produced by solvent casting, dissolving each polymer in chloroform and 1-methyl-2-pyrrolidone respectively, and subsequent glutaraldehyde crosslinking of the PVA chains. The microstructure and physical properties of this novel polymeric system were analysed, including thermal behaviour and degradation, water sorption, wettability and electrical conductivity. The conductivity of these advanced networks rose significantly at higher PPy nanoparticles content. Fourier transform infrared spectroscopy (FTIR) and calorimetry characterization indicated good miscibility and compatibility between all the constituents, with no phase separation and strong interactions between phases. A single glass transition was observed between those of pure PHBV and PVA, although PVA was dominant in its contribution to the glass transition process. Incorporating PPy nanoparticles significantly reduced the hydrogel swelling, even at low concentrations, indicating molecular interactions between the PPy nanoparticles and the hydrogel matrix. The PHBV/PVA semi-IPN showed higher thermal stability than the neat polymers and PHBV/PVA blend, which also remained in the tertiary systems.This research was funded by the Spanish Ministry of Science, Innovation and Universities, grant number RTI2018-097862-B-C21, including the FEDER financial support, (awarded to R.S.i.S. and J.M.-M.) and by the Fundacion Universidad Catolica de Valencia San Vicente Martir, grant No 2019-231-003UCV (awarded to A.S.-A.). CIBER-BBN is an initiative funded by the VI National R&D&I Plan 2008-2011, Iniciativa Ingenio 2010, Consolider Program. CIBER Actions are financed by the Instituto de Salud Carlos III with assistance from the European Regional Development Fund.Aparicio-Collado, JL.; Novoa, JJ.; Molina Mateo, J.; Torregrosa Cabanilles, C.; Serrano-Aroca, Á.; Sabater I Serra, R. (2021). Novel Semi-Interpenetrated Polymer Networks of Poly(3-Hydroxybutyrate-co-3-Hydroxyvalerate)/Poly (Vinyl Alcohol) with Incorporated Conductive Polypyrrole Nanoparticles. Polymers. 13(1):1-21. https://doi.org/10.3390/polym13010057S12113

Flipped Teaching en Física del Grado en Ingenieria de Sistemas de Telecomunicación, Sonido e Imagen: primeros resultados

[EN] The “Group of Educational Innovation and Research in Scientific Fields (GIERMAC)” has been given the Project in Researching and Educational Improvement (PIME-UPV) project “Study on the application of the Flip Teaching in Mathematics and Physics subjects” in October 2015. The work here presented describes a first complete experience made with Physics students of the Engineering Degree in Telecommunication Systems, Sound and Image (GISTSI) during November and December 2015. The students in this experience present voluntary to this strategy and are compensated with additional points for the effort. The experience is focused in thermodynamics issues so it could be exported to subjects of other degrees that teach them.[ES] Al “Grup d’Innovación Educativa i Recerca en Matèries Científiques (GIERMAC)”, se le ha concedido en octubre de 2015 el proyecto PIME-UPV, “Estudio sobre la aplicación del Flip Teaching en asignaturas de Matemáticas y Física”. El trabajo que se presenta relata una primera experiencia completa realizada con los alumnos de Física del Grado en Ingeniería de Sistemas de Telecomunicación, Sonido e Imagen (GISTSI) durante los meses de noviembre y diciembre de 2015. En esta experiencia los alumnos se presentan de forma voluntaria a esta estrategia y son compensados con puntos adicionales por el esfuerzo. La experiencia está centrada en temas de termodinámica, por lo que será exportable a asignaturas de otras titulaciones que la impartan.Alba Fernández, J.; Torregrosa Cabanilles, C.; Vidal Meló, A.; Rey Tormos, RMD. (2016). Flipped Teaching en Física del Grado en Ingenieria de Sistemas de Telecomunicación, Sonido e Imagen: primeros resultados. En In-Red 2016. II Congreso nacional de innovación educativa y docencia en red. Editorial Universitat Politècnica de València. https://doi.org/10.4995/INRED2016.2016.4362OC

Aplicando Flipped Teaching en Física del Grado en Ingenieria de Sistemas de Telecomunicación, Sonido e Imagen

[EN] In November 2016, the GIERMAC team (Grup d’Innovación Educativa i Recerca en Matèries Científiques) received a PIME-UPV project. This project was entitled “Startup of several experiences with the Flip Teaching approach in Physics and Mathematics subjects” and it is a continuation of a previous project entitled “Study on the application of Flipped Teaching in Mathematics and Physics subjects”. This paper presents the application of Flip Teaching during two academic years in the subject of Physics of the Bachelor's Degree in Engineering of Telecommunications Systems, Sound and Image (GISTSI). Experience focuses on thermodynamics items. Students present in volunteer way and are compensated with additional points for strive.[ES] Al “Grup d’Innovación Educativa i Recerca en Matèries Científiques (GIERMAC)”, se le concedió en noviembre de 2016 el proyecto PIME-UPV, “Puesta en marcha de diversas experiencias con el enfoche Flip Teaching en asignaturas de Física y matemáticas”, continuación de otro proyecto anterior titulado“Estudio sobre la aplicación del Flip Teaching en asignaturas de Matemáticas y Física”. En el trabajo se presenta la aplicación del Flip Teaching en dos cursos académicos en la asignatura de Física del Grado en Ingeniería de Sistemas de Telecomunicación, Sonido e Imagen (GISTSI). La experiencia se centra en temas de termodinámica a la que los alumnos se presentan de forma voluntaria y son compensados con puntos adicionales por el esfuerzo.Este trabajo se ha realizado gracias al apoyo del Vicerrectorado de Estudios, Calidad y Acreditación de la UPV al Proyecto PIME 2016-2017 “Puesta en marcha de diversas experiencias con el enfoque Flipped Teaching en asignaturas de Matemáticas y Física”.Alba Fernández, J.; Torregrosa Cabanilles, C.; Vidal Meló, A.; Rey Tormos, RMD. (2017). Aplicando Flipped Teaching en Física del Grado en Ingenieria de Sistemas de Telecomunicación, Sonido e Imagen. En In-Red 2017. III Congreso Nacional de innovación educativa y de docencia en red. Editorial Universitat Politècnica de València. 571-582. https://doi.org/10.4995/INRED2017.2017.6864OCS57158