Effects of quality of opposition and match status on technical and tactical performances in elite volleyball

The aim of this study was to assess the effects of quality of opposition and match status on technical and tactical volleyball performances, as measured by block, attack, serve, and set actions related to the tasks, space, players, and efficacy of selected game actions. Twenty-five matches from the men's World Cup 2007 were notated and through cluster analysis were classified as "high" (HIGH), "intermediate" (INT) or "low" (LOW) quality. The difference between points scored and points allowed was used to define match status. Multinomial logistic regression identified an association of match status with: set direction (likelihood ratio test [LRT]?=?15.5, P?=?0.017) and block typology (LRT?=?9.6, P?=?0.047) in HIGH vs. HIGH matches; attack player (LRT?=?17.4, P?=?0.026) and block typology (LRT?=?9.2, P?=?0.010) in LOW vs. LOW matches; and serve type (LRT?=?17.4, P?=?0.002), block strategy (LRT?=?53.7, P?<0.001), and serve efficacy (LRT?=?26.0, P?=?0.001) in HIGH vs. LOW matches. Results suggest that volleyball teams took more risky decisions in unbalanced situations. They also carried less risk through technical and tactical decisions in balanced and moderate situations whether they had the advantage or not. Therefore, strategic behaviour was affected by the interaction of quality of opposition and match status, providing a better understanding of volleyball game performance and new insights for practice, competition, and research.     

Spreading the digital word: ISI’s Electronic Library Project

Describes the process behind – and the progress of – a unique project designed to explore many of the technical and economic issues pertaining to the implementation and use of an electronic library.     

Playing surface and UK professional rugby union injury risk

Artificial rugby union playing surface installation is increasing. This prospective cohort study aimed to examine the effect of playing surface on match injury types within 157 players of two UK professional rugby union clubs playing 209 matches (96 on artificial surfaces and 113 on grass) over three seasons. There was no difference in overall injury risk between the two playing surfaces with injury incidence on artificial 80.2 (CI 69.9–91.7) and on grass 81.9 per 1000 match-hours (CI 72.2–92.5), with an incidence rate ratio (RR) of 0.98 (CI 0.82–1.17). There was a higher rate of concussion (RR 0.52, CI 0.34 – 0.78) and chest injuries on grass (RR 0.26 CI 0.07, 0.95), and a higher rate of thigh haematoma (RR 2.25, CI 1.05–4.82) foot injuries (RR 4.12, CI 1.10, 15.40) and injury to players being tackled (RR 1.46, CI 1.00, 2.15) on artificial. Whilst there was no higher injury risk for matches played on artificial versus natural grass surfaces, the higher incidence of concussion and chest injury on grass, and the higher rate of foot injuries on artificial surfaces may be related to tackle and footwear-to-surface interface factors.     

Las posibilidades de un modelo teórico para la enseñanza de la comprensión lectora

Resumen

La autora aborda la problemática de la enseñanza de la comprensión lectora desde la perspectiva del modelo interactivo. Tras explicitar las características de este módelo y los avances que supone respecto de formalizaciones anteriores—bottom up y top down—, el artículo se centra en las indicaciones que de él se desprenden para la planificación de actividades de enseñanza/aprendizaje cuyo objeto es la comprensión de textos. Se insiste particularmente en la imposibilidad de aplicar mecánicamente dichos principios, y en la función primordial del maestro para promover en los alumnos estrategias adecuadas de comprensión lectora.     

Effective and inclusive schools? Attention to diversity in highly effective schools in the Autonomous Region of the Basque Country

This paper forms part of a research project that aims to characterise best practices in highly effective schools in the Autonomous Region of the Basque Country (ARBC). The aim is for the best practices identified to serve as points of reference when designing improvement plans to be implemented in all schools in the ARBC, with the advice and support of the education inspectorate. Highly effective schools are identified through the results of the Diagnostic Assessments carried out by the Basque Institute for Research and Evaluation in Education (ISEI-IVEI) of all primary and secondary schools in the ARBC. Multilevel statistical modelling and Hierarchical Linear Models were used to select 32 highly effective schools, with highly effective being taken to mean any school with higher-than-expected student results after adjusting for the effect of contextual factors. Eighty-three interviews were conducted with management teams, educational advisors and inspectors at each of the selected schools. This paper presents the results obtained in relation to how attention to diversity is organised. The practices identified included, among others, inclusive actions such as support teaching in ordinary classrooms, the splitting up of classroom groups, the formation of heterogeneous groups and the conceptualisation of the support provided as a shared teaching responsibility.     

Systematic Review: Flipped Classrooms in the Performance of Undergraduate Science Students

Journal of Science Education and Technology - The sciences are a complex and especially demanding area of study for undergraduate students, particularly in the earlier years, which are a critical...