Truncation symmetry type graphs

There are operations that transform a map M (an embedding of a graph on a surface) into another map in the same surface, modifying its structure and consequently its set of flags F(M). For instance, by truncating all the vertices of a map M, each flag in F(M) is divided into three flags of the truncated map. Orbanic, Pellicer and Weiss studied the truncation of k-orbit maps for k < 4. They introduced the notion of T-compatible maps in order to give a necessary condition for a truncation of a k-orbit map to be either k-, 3k/2- or 3k-orbit map. Using a similar notion, by introducing an appropriate partition on the set of flags of the maps, we extend the results on truncation of k-orbit maps for k < 8 and k=9

Evaluación de la calidad de programas de detección precoz de hipoacusia neonatal. Revision bibliográfica

La audición es la vía habitual de adquisición del lenguaje por lo que su mal funcionamiento interferirá negativamente en la esfera social del niño. Hay evidencia científica que remarca la importancia de una identificación y diagnóstico precoz, antes de los 6 meses, para conseguir resultados más favorables en la adquisición del lenguaje. En los últimos años se han ido instaurando programas de cribado auditivo neonatal con el objetivo de prevenir factores de riesgo predisponentes a desarrollar esta patología, detectar precozmente estos déficits de audición e instaurar lo antes posible un tratamiento. El objetivo de este trabajo es conocer la situación actual de los programas de cribado de hipoacusia neonatal en diferentes hospitales, en cuanto a la calidad. Se ha realizado una revisión bibliográfica de literatura publicada sobre este tema en los últimos cinco años. Con este fin, se han consultado diferentes bases de datos de ciencias de la salud. Para garantizar buenos resultados de estos programas se utilizan una serie de indicadores de calidad. Las publicaciones más recientes toman como referencia los principios publicados en el 2007 por el JCIH (Joint Committee On Infant Hearing). Sin embargo, muchos de los programas estudiados muestran carencias en cuanto a la calidad recomendada encontrándose diferencias significativas dependiendo de los países analizados. Los aspectos con mayores deficiencias fueron los relativos a la cobertura de los programas y a los tiempos de realización del cribado siendo el factor más prevalente en el incumplimiento del cribado la pérdida de seguimiento de los casos.Departamento de EnfermeríaGrado en Enfermerí

Latent curing of epoxy-thiol thermosets

Epoxy-thiol curing is a click reaction which allows quantitative yield of the end products. The base-catalyzed reaction is rapid at low temperatures so it is most often desirable to harness reactivity by using latent catalysts. In this work, we used triazabicyclodecene tetraphenylborate (TBD·HBPh4) as a photobase generator (PB). We activated the PB either thermally or by UV light and monitored reaction kinetics by DSC and FTIR methods. Depending on the catalytic system used, the rate of the thiol-epoxy reaction was ordered as follows: Neat base > UV activated PB > thermally activated PB > uncatalyzed system. A series of isothermal and non-isothermal DSC experiments were run on non-irradiated and irradiated samples in order to study the effect of PB content and UV irradiation duration on PB activation efficiency and latency/storage stability. The data from DSC were analyzed using model-free linear isoconversional methods to estimate kinetic parameters such as activation energies. In addition, the kinetics data for both activation methods were shown to be accurately represented by multi-term Kamal models. The storage stability of the systems were studied at room temperature and was shown to fit well to the predictions of the kinetic model.Postprint (author's final draft

Técnicas de relajación en el aula: Propuesta teórica para desarrollar el autocontrol

En este apartado me gustaría dar las gracias a mis tutores Serafín Aldea y Jesús Bachiller, por toda la ayuda que me han prestado, su rápida disponibilidad, su comprensión, su atención y su paciencia. Gracias por todas las aportaciones, ideas y consejos con los que he podido realizar este trabajo. Gracias a las dos tutoras que tuve durante los períodos de prácticas Milagros Parrilla y Mª Esther Ruíz, por todo lo aprendido durante el practicum I y practicum II, y que he podido tener en cuenta a la hora de realizar el Trabajo Fin de Grado. Sin vuestra ayuda no me habría sido posible llevarlo a cabo. Muchas gracias.Grado en Educación Infanti

Spanish regions and sustainable development: measurement of advances from rio to johannesburg through multidimensional synthetic indexes

In the United Nations Conference on Environment and Development (Rio de Janeiro, 1992), the bases for a world sustainable development were set. Ten years later it took place in Johannesburg the World Summit on Sustainable Development, where it was discussed about the fulfilled advances and it favoured actions for century XXI. This document analyses the concern on sustainability in the Spanish regions by means of the creation of a global synthetic index of sustainable development that fulfils three conditions: it is adapted to Pressure-State-Answer principles, it adopts the Local Agenda 21 mandates and it fits in the four basic dimensions of sustainability: institutional, environmental, economic and social. Over the calculation of the changes taken place in the aforementioned decade in a set of selected variables – grouped in indicators and sub-indicators and classified according to the four dimensions aforementioned in the sustainable development – it is proceeded to the estimation of the synthetic index for the Spanish Autonomous Regions, what is useful as an instrument of analysis to make those regions hierarchical according to their degree of adaptation to the sustainability commitment developed in the Summit in Rio. JEL Classification: Q2, R1 Key Words: Sustainable development, regional analysis, Spain

Acetoacetate based thermosets prepared by dual-Michael addition reactions

A novel set of dual-curable multiacetoacetate-multiacrylate-divinyl sulfone ternary materials with versatile and manipulable properties are presented. In contrast to common dual-curing systems, the first stage polymer herein consists of a densely crosslinked, high Tg network as a result of base-catalyzed multiacetoacetate-divinyl sulfone Michael addition. A more flexible secondary network forms after base-catalyzed Michael addition of remaining multiacetoacetate to multiacrylate. Curing is truly sequential as the rates of the two Michael additions are significantly different. Curing kinetics were analyzed using differential scanning calorimetry (DSC) and Fourier-transform infrared (FTIR). The materials at each curing stage were characterized using dynamic mechanical analysis (DMA) and SEM. Although some phase separation was observed in certain formulations, the incompatibilities were minimized when the molar percentage of the acetoacetate-divinyl sulfone polymer network was above 75%. Furthermore, the environmental scanning electron microscopy (ESEM) images of these materials show that the more flexible acetoacetate-acrylate phase is dispersed in the form of polymeric spheres within the rigid acetoacetate-divinyl sulfone matrix. This unique dual microstructure can potentially render these materials highly resilient in applications requiring densely crosslinked polymer architectures with enhanced toughnesPostprint (published version

Sequential curing of amine-acrylate-methacrylate mixtures based on selective aza-Michael addition followed by radical photopolymerization

Dual curing systems find various uses in industry with the process flexibility they provide which allows tailoring properties at different curing stages in accordance with application requirements. A safe and efficient dual curing scheme is proposed here for a set of mixtures containing different proportions of acrylates and methacrylates. The first curing stage is a stoichiometric aza-Michael addition between acrylates and an amine, followed by photo-initiated radical homopolymerization of methacrylates and remaining acrylates. An analysis of aza-Michael reaction kinetics confirmed that amines react selectively with acrylates, leaving methacrylates unreacted after the first curing stage. It was found that acrylate-rich mixtures achieve complete global conversion at the end of the scheme. However, the highest crosslinking density and thermal resistance was observed in a methacrylate-rich formulation. The resulting materials show a wide range of viscoelastic properties at both curing stages that can be tailored to a variety of industrial application needs.Postprint (author's final draft

Projet ComunicARTE: De l’art et des mots dans l’apprentissage de l’espagnol et pour la participation dans la cité dans une approche interculturelle. Une proposition didactique

La propuesta que presentamos se desarrolla en un contexto escolar multicultural y multilingüe, en educación secundaria, con alumnado recién llegado a España procedente de diferentes continentes. A partir de un marco teórico interdisciplinar, se plantea el aprendizaje de español segunda lengua para desarrollar la competencia comunicativa conversacional, académica e intercultural y sensibilizar en el plurilingüismo. Desde una pedagogía que acompaña y escucha a los sujetos con su voz y biografía, se establecen conexiones entre lo subjetivo, referentes culturales y lingüísticos del alumnado del aula, los entornos cotidianos y lo escolar. Recurrimos al retrato y al autorretrato como texto escrito y como expresión plástica. Para ello nos acercamos a cómo mirar y leer una obra de arte a través de obras de algunos artistas y el arte de diferentes culturas; se realizan autorretratos, lecturas interculturales, en algunos casos bilingües en español y en otras lenguas del aula, y se trabaja la escritura de textos descriptivos, poéticos, informativos con contenidos de algunas áreas curriculares, propiciando el diálogo entre culturas y la sensibilización sobre la diversidad lingüística.Our proposal is developed in a multicultural and multilingual school contexts, in secondary education, with new students to Spain from different continents. Based on an interdisciplinary theoretical framework, there is the Spanish second language learning to develop conversational communicative competence, academic and intercultural awareness in multilingualism. From a pedagogy that accompanies and listen to his voice and subjects with biography, connections are established between subjective, cultural references and linguistic students of the classroom, school and everyday environments. We look to the portrait and self-portrait as a written text and as artistic expression .To do this we approach how to look and read a work of art through works of some artists and the art of different cultures are made self-portraits, intercultural readings in some cases bilingual in Spanish and other languages in the classroom, and work writing descriptive texts, poetic, informative, with contents of some curriculum areas, fostering dialogue between cultures and awareness of linguistic diversity.Notre proposition est développée dans un contexte scolair multiculturel et multilingue, dans l'enseignement secondaire, avec les élèves nouveaux arrivants à l'Espagne de différents continents . L'objectif est d'apprendre une langue seconde (espàgnol) pour développer la compétence communicative conversationnel, académique et interculturelle et de sensibilisation dans le multilinguisme. Nous nous tournons vers le portrait et l'autoportrait comme un texte écrit et d'expression artistique . Pour ce faire, nous abordons la façon de regarder et de lire une oeuvre d'art à travers les oeuvres de certains artistes et de l'art des différentes cultures; autoportraits, lectures interculturelles sont prises , dans certains cas, bilingue en espagnol et autres langues dans la salle de classe , et le travail écriture descriptive , poésie , textes informatifs , avec du matériel de certains domaines d'études ,pour favoriser le dialogue entre les cultures et la conscience de la diversité linguistiqu