987 resultados para higher moments
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Resumen tomado de la publicaci??n
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Resumen tomado de la publicaci??n
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Resumen basado en el de la publicaci??n
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Resumen basado en el de la publicaci??n
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Resumen basado en el de la publicaci??n
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Resumen basado en el de la publicaci??n
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Resumen basado en el de la publicai??n
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Resumen basado en el de la publicaci??n
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Monogr??fico con el t??tulo: "Calidad en la Educaci??n Superior: una visi??n en perspectiva"
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Incluye ap??ndice
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L’éducation physique (EP) est considérée comme une discipline fortement caractérisée par le «faire». Ce sont des mouvements, des gestes, des techniques ou des tactiques en situation et leurs résultats qui sont évalués. C’est aussi à travers le «faire moteur» que majoritairement est pensé le processus d’apprentissage des élèves. Toutefois, si les actions motrices se trouvent au centre des préoccupations disciplinaires, les leçons d’éducation physique comportent toujours une part, parfois assez importante, des «moments à dominance verbale» (MàDV). Ces derniers renvoient aux phases de la séance durant lesquelles l’enseignant et/ou les élèves communiquent verbalement (des gestes ou des démonstrations peuvent accompagner la parole). Le temps dédié aux consignes initiales, le temps des régulations après une situation de jeu ou le temps des feed-back sont des exemples typiques
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We present an algorithm for computing exact shortest paths, and consequently distances, from a generalized source (point, segment, polygonal chain or polygonal region) on a possibly non-convex polyhedral surface in which polygonal chain or polygon obstacles are allowed. We also present algorithms for computing discrete Voronoi diagrams of a set of generalized sites (points, segments, polygonal chains or polygons) on a polyhedral surface with obstacles. To obtain the discrete Voronoi diagrams our algorithms, exploiting hardware graphics capabilities, compute shortest path distances defined by the sites
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Two common methods of accounting for electric-field-induced perturbations to molecular vibration are analyzed and compared. The first method is based on a perturbation-theoretic treatment and the second on a finite-field treatment. The relationship between the two, which is not immediately apparent, is made by developing an algebraic formalism for the latter. Some of the higher-order terms in this development are documented here for the first time. As well as considering vibrational dipole polarizabilities and hyperpolarizabilities, we also make mention of the vibrational Stark effec
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Treball sobre la creació d’un pla de màrqueting d’un hotel temàtic fictici. Aquest sorgeix d’un objectiu secundari fruit d’una motivació personal amb interès cap a la coneixença dels hotels temàtics, que responia a les següents preguntes: Què és un hotel temàtic? Quins tipus d’hotels temàtics podem trobar? Quan sorgeixen els hotels temàtics? El Pla de Màrqueting representa el desenvolupament d’una idea creativa, imaginant que els hotels poden ser molt més que un simple allotjament. Poden esdevenir llocs que poden conduir cap al món de les sensacions i de les experiències úniques
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Zooplankton community structure (composition, diversity, dynamics and trophic relationships) of Mediterranian marshes, has been analysed by means of a size based approach. In temporary basins the shape of the biomass-size spectra is related to the hydrological cycle. Linear shape spectra are more frequent in flooding situations when nutrient input causes population growth of small-sized organisms, more than compensating for the effect of competitive interactions. During confinement conditions the scarcity of food would decrease zooplankton growth and increase intra- and interspecific interactions between zooplankton organisms which favour the greatest sizes thus leading to the appearance of curved shape spectra. Temporary and permanent basins have similar taxonomic composition but the latter have higher species diversity, a more simplified temporal pattern and a size distribution dominated mainly by smaller sizes. In permanents basins zooplankton growth is not only conditioned by the availability of resources but by the variable predation of planktivorous fish, so that the temporal variability of the spectra may also be a result of temporal differences in fish predation. Size diversity seems to be a better indicator of the degree of this community structure than species diversity. The tendency of size diversity to increase during succession makes it useful to discriminate between different succession stages, fact that is not achieved by analysing only species diversity since it is low both under large and frequent or small and rare disturbances. Amino acid composition differences found among stages of copepod species indicate a gradual change in diet during the life cycle of these copepods, which provide evidence of food niche partitioning during ontogeny, whereas Daphnia species show a relatively constant amino acid composition. There is a relationship between the degree of trophic niche overlap among stages of the different species and nutrient concentration. Copepods, which have low trophic niche overlap among stages are dominant in food-limited environments, probably because trophic niche partitioning during development allow them to reduce intraspecific competition between adults, juveniles and nauplii. Daphnia species are only dominant in water bodies or periods with high productivity, probably due to the high trophic niche overlap between juveniles and adults. These findings suggest that, in addition to the effect of interspecific competition, predation and abiotic factors, the intraspecific competition might play also an important role in structuring zooplankton assemblages.