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91.
Tertiary Education and Management - The aim of this study is to compare the results of successful mergers in terms of ranking performance of the so called ‘world-class’ universities in... 相似文献
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94.
PT Esteves D Araújo K Davids L Vilar B Travassos C Esteves 《Journal of sports sciences》2012,30(12):1285-1293
Abstract In this study, we examined the effects of relative positioning of attacker-defender dyads to the basket on interpersonal coordination tendencies in basketball. To achieve this aim, four right-hand dominant basketball players performed in a 1 vs. 1 sub-phase, at nine different playing locations relative to the basket (from 0° to 180°, in 20° increments). Performers' movement displacement trajectories were video-recorded and digitized in 162 trials. Results showed that interpersonal coordination tendencies changed according to the scaling of the relative position of performers to the basket. Stable in-phase modes of coordination were observed between performers' longitudinal and lateral displacements (50.47% and 43.02%) on the left side of the court. On the right side of the court, a shift in the dominant mode of coordination was observed to a defender lead-lag of -30°, both for longitudinal and lateral displacements (30.51% and 32.65%). These results suggest how information about dribbler hand dominance and relative position to the basket may have constrained attacker-defender coordination tendencies in 1 vs. 1 sub-phases of basketball. 相似文献
95.
Fermín L. Cruz Carlos G. VallejoFernando Enrı´quez José A. Troyano 《Information processing & management》2012
In this paper we present the relevance ranking algorithm named PolarityRank. This algorithm is inspired in PageRank, the webpage relevance calculus method used by Google, and generalizes it to deal with graphs having not only positive but also negative weighted arcs. Besides the definition of our algorithm, this paper includes the algebraic justification, the convergence demonstration and an empirical study in which PolarityRank is applied to two unrelated tasks where a graph with positive and negative weights can be built: the calculation of word semantic orientation and instance selection from a learning dataset. 相似文献
96.
George Kelly’s repertory grid application seems a promising method for researching the moral significance of teaching from a ‘life world’ perspective. However, we encountered several challenges employing the repertory grid in its standard form for an inquiry into the inherent moral significance of teachers’ everyday classroom interactions. In this article we will set out in detail how, on the basis of the standard repertory grid application, we developed a repertory interview method that can be used to collect data that could foster a thorough understanding of the inherent moral significance of teachers’ day-to-day classroom interactions. 相似文献
97.
Carlos Nolasco 《Soccer & Society》2019,20(6):795-809
In a context of intense competition, emphasized by globalization processes, the football industry seeks to maximize performances through an incessant search for high quality skilled players. In a market logic, these players become a scarce asset. They are intensely sought out by teams, which results in an intense migration flow of footballers. Portuguese football is also imbedded in these migrations dynamics. Although it is not a new phenomenon in recent years, Portugal has become a crossroads of migratory flows players, with a large number of foreign players to reach national clubs, and many Portuguese players to go to foreign clubs. The aim of this paper is to observe the migratory trends of football players in Portugal, and identify the migratory routes not only of the foreign players who arrived in Portugal, but also of the Portuguese players who go abroad. 相似文献
98.
Natalia Ribeiro Carlos Ugrinowitsch Valéria Leme Gonçalves Panissa Valmor Tricoli 《European Journal of Sport Science》2019,19(3):287-294
The aim of the present study was to investigate the acute effect of the aerobic exercise volume on maximum strength and strength-endurance performance; and possible causes of strength decrements (i.e. central and peripheral fatigue). Twenty-one moderately trained men were submitted to a maximal incremental test to determine anaerobic threshold (AnT) and maximum dynamic strength (1RM) and strength-endurance (i.e. total volume load [TV]) tests to determine their baseline strength performance. Following, subjects performed six experimental sessions: aerobic exercise sessions (continuous running at 90% AnT) with different volumes (3?km, 5?km or 7?km) followed by 1RM or strength-endurance test in the 45° leg press exercise. Maximum voluntary isometric contraction (MVIC), voluntary activation (VA) level, contractile properties, and electromyographic activity (root mean square [RMS]) of the knee extensor muscles were assessed before and after aerobic exercises and after strength tests. TV was lower after 5?km and 7?km runs than in the control condition (12% and 22%, respectively). Additionally, TV was lower after 7?km than 3?km (14%) and 5?km (12%) runs. MVIC, VA, RMS, and contractile properties were reduced after all aerobic exercise volumes (~8%, ~5%, ~11% and ~6–14%, respectively). Additionally, MVIC, VA, and contractile properties were lower after strength tests (~15%, ~6%, ~9–26%, respectively). In conclusion, strength-endurance performance is impaired when performed after aerobic exercise and the magnitude of this interference is dependent on the aerobic exercise volume; and peripheral and central fatigue indices could not explain the different TV observed. 相似文献
99.
Mário Hebling Campos Nayane Martins Giraldi Paulo Gentil Claudio Andre Barbosa de Lira Carlos A. Vieira Marcelo Costa de Paula 《Journal of sports sciences》2017,35(12):1134-1141
This study analysed the behaviour of the geometric curvature of the spine during sirshasana. The position of dorsal retroreflective markers was computed via stereophotogrammetric analysis in six males and five females (29.4 ± 8.8 years, 63.0 ± 11.4 kg, 1.66 ± 0.08 m [average ± standard deviation]). The spinal points were projected onto the sagittal and frontal planes of the trunk, a polynomial was fitted to the data and the two-dimensional geometric curvature was quantified. The inferior lumbar lordosis decreased compared to the orthostatic position and gait, which may favour the posterior protrusion of the lumbar spinal nucleus pulposus in people with posterior herniation. The lateral deviation at the middle of the thoracic spine increases during sirshasana, which may reflect increased difficulties for postural control and spinal loads. It could be useful for promoting positive spinal structural and functional chronic adaptations for healthy participants, if the yoga programme is carefully planned and the spinal alignment is carefully monitored during a headstand. However, it may aggravate some spinal diseases, especially scoliosis. 相似文献
100.
Determinants of possession of the ball in soccer 总被引:1,自引:0,他引:1
In research on the importance of the possession of the ball in soccer, little attention has been paid to its determinants. Using data from 170 matches of the 2003 - 2004 Spanish Soccer League, we explain why differences in the possession of the ball among teams are so great. In particular, four variables are examined: evolving match status (i.e. whether the team is winning, losing or drawing), venue (i.e. playing at home or away), and the identities of the team and the opponent in each match. Results of linear regression analysis show that these four variables are statistically significant and together explain most of the variance in possession. In short, home teams have more possession than away teams, teams have more possession when they are losing matches than when winning or drawing, and the identity of the opponent matters - the worse the opponent, the greater the possession of the ball. Combinations of these variables could be used to develop a model that predicts possession in soccer. 相似文献