1,721,039 research outputs found
Muslimische Mädchen und Frauen im Sport. Erfahrungen und Perspektiven.
No full textKleindienst-Cachay C, Klein M-L. Muslimische Mädchen und Frauen im Sport. Erfahrungen und Perspektiven. Hohengehren: Schneider; 2004
Sportvereinsentwicklung: Ein Konzept zur Planung und Durchführung von Veränderungsprozessen
No full textSoziale Konstruktion von Geschlecht im Sport
No full textKleindienst-Cachay C, Hartmann- Tews I, Gieß-Stüber P, Klein M-L. Soziale Konstruktion von Geschlecht im Sport. Opladen: Leske + Budrich; 2003
Going Beyond Counting First Authors in Author Co-citation Analysis
Full text linkThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Variations on the Author
Full text link“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Full text linkWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Cation Transport in Lithium Sulphate Based Crystals
No full textMolecular dynamics simulations have been carried out of the fast-ion-conducting solid phases of lithium sulphate (Li2SO4), sodium-doped Li2SO4 and lithium sodium sulphate (LiNaSO4). An interionic potential model has been developed which provides a good fit to the experimental pressures, sound velocities, neutron structure factors and cation diffusion coefficients. The static distribution of the mobile cations is discussed in terms of the occupancy of interstitial sites and of anion-cation coordination. It is shown that the cations are almost invariably bonded to one and often to two oxygen atoms of neighbouring sulphate groups. The latter therefore play an essential role in the cation diffusion mechanism. The diffusion coefficients are partitioned in a way that makes it possible to identify separately the contributions from centre-of-mass displacements and rotations of the sulphate groups. It is concluded that the diffusion coefficient of Li+ is enhanced by up to approximately 50% by anion reorientation and that of Na+ by approximately 30%. The near equality of the diffusion coefficients of Li+ and Na+ in both doped Li2SO4 and LiNaSO4 is shown to arise as a balance between mass and size effects; the implications of this for related systems are noted
Structure of solid t-butyl cyanide: a study by means of constant-temperature, constant-pressure, molecular dynamics simulation
No full textThe structural phase transition that occurs in solid t‐butyl cyanide just before melting has been studied by constant‐temperature, constant‐pressure, molecular‐dynamics simulations. The simulations were based on a six‐site potential model with parameters obtained from static‐energy calculations for the observed, low‐temperature, monoclinic structure. Changes in the lattice constants and in order parameters for the molecular orientations show that an apparently first‐order transition to a tetragonal, orientationally disordered phase occurs at a temperature in the range between 250 and 275 K; experimentally, a similar transition is observed at 233 K. Comparison is made with neutron‐scattering results for the tetragonal phase, and deficiencies in the potential model and in the model used to parametrize it are discussed
Molecular Dynamics simulation of aqueous mixtures: Methanol, acetone and ammonia
No full textEffective pair‐potential models, parametrized to the properties of the pure liquids, have been used in molecular‐dynamics simulations of aqueous (binary) mixtures containing methanol, ammonia, or acetone. Results are reported for thermodynamic and structural properties, self‐diffusion coefficients, and reorientational correlation times. There is fair agreement with a wide variety of experimental data. The pattern of hydrogen bonding and the distribution of hydrogen‐bond lifetimes in the simulated mixtures have been investigated. The observed anomalous behavior of methanol and acetone solutions appears to be related to specific features of the hydrogen bonding—namely, the ability of these molecules to exhibit enhanced acceptor character. As a consequence of the assumed intermolecular potentials, the balance between the competing effects of hydrophobic hydration of methyl groups and hydrogen bonding to oxygen atoms is tipped towards the latter. A number of interesting structural effects have been noted. In particular, the distribution function g(R) for water oxygen atoms sharpens appreciably on addition of the second component. The structure of the water–ammonia system is discussed in detail. There is good accord with available x‐ray data at low concentration, but there are no measurements available to test the predictions at high concentration
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