955 resultados para Problem solving Study and teaching


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Pràctiques d’hidrogeologia realitzades per Anna Menció i Domingo, dins aquesta assignatura que forma part del mòdul obligatori de Bases científiques del medi natural del segon curs del grau en Ciències Ambientals.

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La transformación, sin duda, más compleja del proceso de cambio del modelo universitario es la que implica el paso de un modelo centrado en la enseñanza a otro organizado en torno al aprendizaje. Formar estudiantes autónomos, capaces de dirigir y protagonizar su propio proceso de aprendizaje implica, además de un cambio metodológico, la transformación de roles y de mentalidades así como de estructuras organizativas y materiales. La comunicación presenta algunas de las cuestiones claves del proceso de cambio del modelo formativo que han surgido de la experiencia de utilización del modelo ABP en el primer curso del grado de Geografía y Ordenación del Territorio en la Universidad del País Vasco

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El Espacio Europeo de Educación Superior (EEES) es una gran oportunidad para cambiar los viejos modelos de docencia en la universidad, centrados generalmente en la clase magistral. En este trabajo se propone una metodología, centrada en el estudiante, que elimina o reduce sustancialmente la clase magistral, aumentando la interacción del estudiante con el grupo y con el profesor, haciendo énfasis en el trabajo previo a las clases, así como en el aprendizaje basado en problemas (ABP) y en un planteamiento que acerca los contenidos al mundo profesional

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L'Aprenentatge Basat en Problemes (ABP) en el grau d'infermeria de l'Escola Universitària d'Infermeria del Mar (EUI Mar) es va posar en pràctica des de l'inici del Grau, en el curs 2009-2010. Donat que és una estratègia incorporada recentment per l'equip, dins d'un procés d'innovació docent integral, i amb l'objectiu de millorar la qualitat, es va dissenyar un qüestionari ad hoc, per tal de conèixer la satisfacció del professorat. En la present comunicació, descriurem la implementació de l'ABP en la nostra institució, i analitzarem els resultats del nivell de satisfacció dels professors que hi han participat

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La Comunicación se enmarca dentro del análisis y efectividad que la evaluación 360 grados tiene en el desarrollo de las competencias de trabajo en equipo por parte el alumnado de la asignatura Análisis de Mercado Turístico. En la comunicación se detallan las fases de aplicación del sistema de evaluación así como los resultados obtenidos en la ejecución de la evaluación integral o 360º. En último lugar se presentan las conclusiones de la investigación, las cuales permiten plantear una metodología o sistema de evaluación novedoso y renovado en el que se mejoran y complementan los métodos de valoración de competencias así como los mecanismos formativos adscritos a los mismos

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La Búsqueda de herramientas eficaces para la evaluación de competencias transversales, comunes a diferentes asignaturas de un mismo plan de estudios, es uno de los pilares del nuevo Espacio Europeo de Educación Superior. El trabajo que aquí se presenta pretende mostrar las experiencias realizadas en primer curso del Grado en Ingeniería de Edificación en la Escuela Politécnica de Cuenca mediante prácticas dirigidas sobre edificios y proyectos de edificación. El objetivo principal es obtener estrategias de integración de conocimientos multidisciplinares por parte del alumnado, y de evaluación de competencias genéricas, de forma conjunta por parte del profesorado, a partir del trabajo coordinado sobre un mismo modelo arquitectónico

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Estudiamos el grado de implementación del trabajo colaborativo en los distintos títulos de Grado de la Facultad de Ciencias Económicas y Empresariales de la Universidad de Alicante. A través del empleo de una metodología descriptiva, profundizaremos en los distintos aspectos de interés relativos al trabajo colaborativo que se recogen en las fichas oficiales de cada asignatura. Los resultados del estudio nos permitirán conocer cómo se ha implementado el trabajo colaborativo como método de aprendizaje y evaluación, tanto a nivel particular para cada una de las asignaturas analizadas, como a nivel global para las distintas titulaciones que integran nuestra Facultad

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The characteristics of service independence and flexibility of ATM networks make the control problems of such networks very critical. One of the main challenges in ATM networks is to design traffic control mechanisms that enable both economically efficient use of the network resources and desired quality of service to higher layer applications. Window flow control mechanisms of traditional packet switched networks are not well suited to real time services, at the speeds envisaged for the future networks. In this work, the utilisation of the Probability of Congestion (PC) as a bandwidth decision parameter is presented. The validity of PC utilisation is compared with QOS parameters in buffer-less environments when only the cell loss ratio (CLR) parameter is relevant. The convolution algorithm is a good solution for CAC in ATM networks with small buffers. If the source characteristics are known, the actual CLR can be very well estimated. Furthermore, this estimation is always conservative, allowing the retention of the network performance guarantees. Several experiments have been carried out and investigated to explain the deviation between the proposed method and the simulation. Time parameters for burst length and different buffer sizes have been considered. Experiments to confine the limits of the burst length with respect to the buffer size conclude that a minimum buffer size is necessary to achieve adequate cell contention. Note that propagation delay is a no dismiss limit for long distance and interactive communications, then small buffer must be used in order to minimise delay. Under previous premises, the convolution approach is the most accurate method used in bandwidth allocation. This method gives enough accuracy in both homogeneous and heterogeneous networks. But, the convolution approach has a considerable computation cost and a high number of accumulated calculations. To overcome this drawbacks, a new method of evaluation is analysed: the Enhanced Convolution Approach (ECA). In ECA, traffic is grouped in classes of identical parameters. By using the multinomial distribution function instead of the formula-based convolution, a partial state corresponding to each class of traffic is obtained. Finally, the global state probabilities are evaluated by multi-convolution of the partial results. This method avoids accumulated calculations and saves storage requirements, specially in complex scenarios. Sorting is the dominant factor for the formula-based convolution, whereas cost evaluation is the dominant factor for the enhanced convolution. A set of cut-off mechanisms are introduced to reduce the complexity of the ECA evaluation. The ECA also computes the CLR for each j-class of traffic (CLRj), an expression for the CLRj evaluation is also presented. We can conclude that by combining the ECA method with cut-off mechanisms, utilisation of ECA in real-time CAC environments as a single level scheme is always possible.

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Pressing global environmental problems highlight the need to develop tools to measure progress towards "sustainability." However, some argue that any such attempt inevitably reflects the views of those creating such tools and only produce highly contested notions of "reality." To explore this tension, we critically assesses the Environmental Sustainability Index (ESI), a well-publicized product of the World Economic Forum that is designed to measure 'sustainability' by ranking nations on league tables based on extensive databases of environmental indicators. By recreating this index, and then using statistical tools (principal components analysis) to test relations between various components of the index, we challenge ways in which countries are ranked in the ESI. Based on this analysis, we suggest (1) that the approach taken to aggregate, interpret and present the ESI creates a misleading impression that Western countries are more sustainable than the developing world; (2) that unaccounted methodological biases allowed the authors of the ESI to over-generalize the relative 'sustainability' of different countries; and, (3) that this has resulted in simplistic conclusions on the relation between economic growth and environmental sustainability. This criticism should not be interpreted as a call for the abandonment of efforts to create standardized comparable data. Instead, this paper proposes that indicator selection and data collection should draw on a range of voices, including local stakeholders as well as international experts. We also propose that aggregating data into final league ranking tables is too prone to error and creates the illusion of absolute and categorical interpretations. (c) 2004 Elsevier Ltd. All rights reserved.

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The difference between cirrus emissivities at 8 and 11 μm is sensitive to the mean effective ice crystal size of the cirrus cloud, De. By using single scattering properties of ice crystals shaped as planar polycrystals, diameters of up to about 70 μm can be retrieved, instead of up to 45 μm assuming spheres or hexagonal columns. The method described in this article is used for a global determination of mean effective ice crystal sizes of cirrus clouds from TOVS satellite observations. A sensitivity study of the De retrieval to uncertainties in hypotheses on ice crystal shape, size distributions, and temperature profiles, as well as in vertical and horizontal cloud heterogeneities shows that uncertainties can be as large as 30%. However, the TOVS data set is one of few data sets which provides global and long-term coverage. Having analyzed the years 1987–1991, it was found that measured effective ice crystal diameters De are stable from year to year. For 1990 a global median De of 53.5 μm was determined. Averages distinguishing ocean/land, season, and latitude lie between 23 μm in winter over Northern Hemisphere midlatitude land and 64 μm in the tropics. In general, larger Des are found in regions with higher atmospheric water vapor and for cirrus with a smaller effective emissivity.

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This article reports on an investigation into the language learning beliefs of students of French in England, aged 16 to 18. It focuses on qualitative data from two groups of learners (10 in total). While both groups had broadly similar levels of achievement in French in terns of examination success, they dffered greatly in the self-image they had of themselves as language learners, with one group displaying low levels of self-eficacy beliefs regarding the possibility of future success. The implica tions of such beliefs for students' levels of motivation and persistence are discussed, together with their possible causes. The article concludes by suggesting changes in classroom practice that might help students develop a more positive image of them selves as language learners.