Knowledge of bout duration influences pacing strategies during small-sided games

This investigation examines pacing during intermittent team sports. Sixteen junior Rugby League players participated in eight different small-sided offside touch games. All games were 24 min, but bout durations differed in continuous (1 × 24 min) or repeated (2 × 12, 3 × 8, 4 × 6, 6 × 4, 8 × 3, 12 × 2 or 24 × 1 min) formats. Repeat bouts were interspersed by 2 min of passive rest, and participants were informed of the bout duration immediately prior to the game. Heart rates, ratings of perceived exertion and data gathered from global positioning system devices were used to investigate the pacing strategies employed within each game. No significant (P > 0.05) between-game differences were observed in total distance; however, during the 1-min bouts, high-speed movement was significantly (P < 0.05) increased, during the first and second quarters of the 24 × 1-min game compared to all other formats (effect size range: 0.75 ± 0.61–1.38 ± 0.47). Furthermore, the rate of decline in high-speed movement over-time was greatest during the 24 × 1-min game with large differences observed between the first and third quarters (effect size: 0.90 ± 0.58). Greater moderate-speed (effect size range: 0.62 ± 0.63–1.56 ± 0.40) and less low-speed (effect size range: 0.69 ± 0.62–1.54 ± 0.40) distances were also observed during the 1-min bouts, yet heart rates were higher during the continuous 1 × 24-min game. Pacing strategies during intermittent activities are influenced by the number and duration of exercise bouts. Practitioners should consider within-game bout durations when prescribing game-based activities to improve aerobic capacity.     

��It depends on what science teacher you got��: urban science self-efficacy from teacher and student voices

In the United States today, urban schools serve the majority of high-poverty and high minority populations including large numbers of Hispanic students. While many Hispanic students perform below grade level in middle school science, the science teaching community as a whole is lacking elements of diversity as teachers struggle to meet the needs of all learners. Researchers have recognized that science teacher effectiveness, one consequence of self-efficacy among teachers, is associated with future science achievement and science-related careers of their students. This qualitative study explores how three science teachers’ effectiveness in the classroom impacts students’ science self-efficacy beliefs at one urban middle school. Hispanic students were the focus of this investigation due to demographics and history of underperformance within this district. Teachers’ perspectives, as well as outside observer evaluations of instructional strategies and classroom climates were triangulated to explore dynamics that influence students’ interests and motivation to learn science using a framework to link teachers’ sense of efficacy (focusing on student outcomes). Findings suggest the impact teacher effectiveness can have on student outcomes, including strengthened student science self-efficacy and increased science achievement. Building awareness and support in teachers’ sense of efficacy, as well as developing respectful and supportive relationships between educator/facilitator and pupil during the transition to middle school may construct permanence and accomplishment for all in science.     

Between education and psychology: school staff perspectives

When discussing contributions from psychology in/to educational practices like school-based mental health promotion, it is peculiar that psychologists (of an educational or clinical kind) or education-oriented sociologists, both not often based in schools or classrooms, dominate the topic. It has been acknowledged that school staff have been over looked and underutilised in contributing to the discussion, particularly as this pertains to sharing perspectives on how they experience their role in relationship to education policy and practice. The study presented here looked to address this situation by seeking the perspectives of school staff on a range of concerns situated at the nexus between education and psychology. Contrary to the type of displaced assessment intimated above, this group of school staff generally accepts they perform a crucial task in supporting students, their main concern being to incisively question how they might negotiate existing role-related pressures to better current school-based practice.     

Longitudinal analysis of the environmental attitudes of university students

This article addresses the important questions that higher education institutions ask concerning their impact on their students’ sustainability-related attributes ‘How do our students’ worldviews change as they experience higher education with us?’ The process of monitoring such a dynamic entity is fraught with statistical complexity but may not be impossible for an institution willing to ask whether or not its educational efforts in ‘education for sustainability’, ‘education for sustainable development’ or ‘environmental education’, and campus sustainability developments, are paralleled by changes in the attitudes of its students. We describe here a longitudinal survey process based on the revised New Ecological Paradigm scale, with two cohorts of students, in three programmes of study, operating over four years, with multiple survey inputs by each student. We implemented the longitudinal analysis using a linear mixed-effects model and describe here the development and testing of this model. We conclude that higher education institutions can benchmark the sustainability attributes of their students and monitor changes, if they are minded to. We invite higher education practitioners worldwide to join us in further developing suitable research instruments, processes and statistical models, and in further analysing the assumptions that link higher education to sustainability and to global citizenship.     

The 2010 Benjamin Franklin medal in Computer and Cognitive Science presented to Shafrira Goldwasser,Ph.D.

The Franklin Institute, Philadelphia, Pennsylvania, awards the 2010 Benjamin Franklin Medal in Computer and Cognitive Science to Professor Shafrira Goldwasser for fundamental work contributing to the theoretical foundation of modern cryptography and leading to techniques that mathematically guarantee secure access to the internet. More precisely, she is recognized for key contributions in provable security and in particular for interactive and zero-knowledge proofs and their application to cryptography and complexity theory.     

(1) U.S.A.

The authors of this study assess the attitudes and perceptions of academic librarians at three university libraries in China regarding library services for international students and scholars. The study directs particular focus on librarians at Shaanxi Normal University in Xi’an, Fudan University in Shanghai, and Wuhan University of Technology, China, and follows logically upon a study conducted in 2008 that explored the perceptions of international students at two Chinese universities regarding the effectiveness of library services and collections for their research needs. In particular, this study documents information about Chinese academic librarian perceptions regarding services for international students and attitudes toward future outcomes. The ultimate goal of the study is to lay a foundation for developing strategies for improving library services and resources for international students and scholars in Chinese academic libraries in particular, which in turn can serve to improve services for international students world-wide. The results support the assumption that academic librarians in China are strongly interested in improving services for international students and scholars while continuing to face challenges and trying to find ways to fulfill the information needs of international students and scholars.     

Beginning Bayes

Understanding a Bayesian perspective demands comfort with conditional probability and with probabilities that appear to change as we acquire additional information. This paper suggests a simple context in conditional probability that helps develop the understanding students would need for a successful introduction to Bayesian reasoning.