5 resultados para elementary science


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[Es]En este trabajo se aborda la problemática detectada como consecuencia del fracaso que presenta gran mayoría del alumnado de la E. U. de Magisterio de Bilbao, futuro profesorado de Educación Primaria (EP), en la aplicación creativa de conocimientos transmitidos en el aula de ciencias, esto es, en la resolución de problemas y en la explicación de fenómenos cotidianos del mundo que nos rodea. Para ello se ha analizado, por un lado, su capacitación en relación a varios tópicos de ciencias incluidos en el Área de Conocimiento del Medio en la EP, presentados en un contexto de ciencia en la vida cotidiana y su autovaloración en relación a su capacitación didáctica para abordarlos en aulas de ciencias escolares y, por otro, la metodología didáctica utilizada en las clases de ciencias que han recibido en etapas educativas previas a la universitaria.

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Tracking the evolution of research in waste recycling science (WRS) can be valuable for environmental agencies, as well as for recycling businesses. Maps of science are visual, easily readable representations of the cognitive structure of a branch of science, a particular area of research or the global spectrum of scientific production. They are generally built upon evidence collected from reliable sources of information, such as patent and scientific publication databases. This study uses the methodology developed by Rafols et al. (2010) to make a “double overlay map” of WRS upon a basemap reflecting the cognitive structure of all journal-published science, for the years 2005 and 2010. The analysis has taken into account the cognitive areas where WRS articles are published and the areas from where it takes its intellectual nourishing, paying special attention to the growing trends of the key areas. Interpretation of results lead to the conclusion that extraction of energy from waste will probably be an important research topic in the future, along with developments in general chemistry and chemical engineering oriented to the recovery of valuable materials from waste. Agricultural and material sciences, together with the combined economics, politics and geography field, are areas with which WRS shows a relevant and ever increasing cognitive relationship.

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This report is an introduction to the concept of treewidth, a property of graphs that has important implications in algorithms. Some basic concepts of graph theory are presented in the first chapter for those readers that are not familiar with the notation. In Chapter 2, the definition of treewidth and some different ways of characterizing it are explained. The last two chapters focus on the algorithmic implications of treewidth, which are very relevant in Computer Science. An algorithm to compute the treewidth of a graph is presented and its result can be later applied to many other problems in graph theory, like those introduced in the last chapter.