Methodological considerations for the 3D measurement of the X-factor and lower trunk movement in golf

It is believed that increasing the X-factor (movement of the shoulders relative to the hips) during the golf swing can increase ball velocity at impact. Increasing the X-factor may also increase the risk of low back pain. The aim of this study was to provide recommendations for the three-dimensional (3D) measurement of the X-factor and lower trunk movement during the golf swing. This three-part validation study involved; (1) developing and validating models and related algorithms (2) comparing 3D data obtained during static positions representative of the golf swing to visual estimates and (3) comparing 3D data obtained during dynamic golf swings to images gained from high-speed video. Of particular interest were issues related to sequence dependency. After models and algorithms were validated, results from parts two and three of the study supported the conclusion that a lateral bending/flexion-extension/axial rotation (ZYX) order of rotation was deemed to be the most suitable Cardanic sequence to use in the assessment of the X-factor and lower trunk movement in the golf swing. The findings of this study have relevance for further research examining the X-factor its relationship to club head speed and lower trunk movement and low back pain in golf.     

Medical Fellows Tell Stories of Application: A Grounded Theory on the Dynamics of Transfer

In this exploratory study, researchers collected and analyzed physician's stories of how they had applied what they had learned from a medical fellowship. We describe and explain the patterns shown in five cases of application. Based on these cases we form a theory of transfer for autonomous professionals learning an open skill. The findings support the claim that transfer is a dynamic process. We view transfer as part of a continuous learning and motivational process extending to a learner's past and projecting into a learner's future. The theory, in brief, is that professionally oriented learners follow an iterative constructive pattern of application when applying knowledge: learners perceive the usefulness of an idea, become ready to use the notion, make the application, and learn from its implementation. We also briefly describe practical and theoretical implications of the theory.     

Environmental Education in Primary Education: status and trends in southern and eastern Africa

This study presents the results of an international comparative study (based on secondary analysis techniques) into the status of environmental education (EE) in primary education in 10 southern and eastern African countries. The study concludes that the current provisions for EE in primary education in the countries sampled are insufficient for the comprehensive development of national programmes. The major barriers to the further development ofEE include inadequate provisions for EE in education policy, deficiencies in teacher training in EE and a lack of instructional materials. The study recommends that the most important step towards improving the status of EE in primary education in the region is the inclusion of EE in education policy, combined with the development of a mechanism that would facilitate policy implementation.     

Enhancing classroom management through proactive rules and procedures

This article presents an overview of classroom rule establishment and implementation within a proactive management strategy. Characteristics of classroom rules such as wording and means of presentation are included, and the intended nature and function of rules is discussed. It was concluded that rules do not work in isolation and therefore should be used in conjunction with an overall classroom management plan. Suggesitions for future research and practice are provided.     

The emergent genre of campaign e-mail in the 2008 presidential nomination campaign

This study describes e-mail use in the 2008 U.S. presidential nomination campaigns. A content analysis and rhetorical analysis of over 1,400 e-mails from the primary season of that campaign reveal evidence of typification. Consistent practices and shared purposes are evident in the campaign e-mails, along with shared and individual variations indicating an emergent communicative form. In-group identification pairs with interactive, supporter behaviors to make up the dominant constellations-of-practice within this corpus.     

Reflections on the Visiting Professorship Programme for Senior International Scientists at CAS

<正>I first learnt about the Visiting Professorship Programme after visiting the Institute of Geology and Palaeontology of the Chinese Academy of     

Conflict of Learning Styles: University Science Lectures in the Sultanate of Oman

This article examines the differing learning styles found in western lecturers and Omani students in science lectures in the Sultanate of Oman. Oman is a country which modernized very recently, and students there were encountering western lecturers and lecturing methods for the first time. The western lecturers found the Omani approach to science, which they characterized as memorization deficient and wished to introduce a problem-solving approach. However, it is argued that some memorization occurs in all learning of science everywhere, that the Omani approach has its merits, and that a major problem in these lectures was the lack of knowledge of Omani and Arabic culture in the lecturers. It is argued that all learning takes place by matching new knowledge and methods with previous ones, and that to successfully lecture to the Omani students the lecturers would need to research further into ways in which their approach could have built on, rather than replaced entirely, the Omani approach. The article is based on interviews with the lecturers and extracts from the lectures, which were recorded and transcribed by the writer.     

Perceptual-cognitive expertise in sport: a meta-analysis

Research focusing on perceptual-cognitive skill in sport is abundant. However, the existing qualitative syntheses of this research lack the quantitative detail necessary to determine the magnitude of differences between groups of varying levels of skills, thereby limiting the theoretical and practical contribution of this body of literature. We present a meta-analytic review focusing on perceptual-cognitive skill in sport (N = 42 studies, 388 effect sizes) with the primary aim of quantifying expertise differences. Effects were calculated for a variety of dependent measures (i.e., response accuracy, response time, number of visual fixations, visual fixation duration, and quiet eye period) using point-biserial correlation. Results indicated that experts are better than nonexperts in picking up perceptual cues, as revealed by measures of response accuracy and response time. Systematic differences in visual search behaviors were also observed, with experts using fewer fixations of longer duration, including prolonged quiet eye periods, compared with non-experts. Several factors (e.g., sport type, research paradigm employed, and stimulus presentation modality) significantly moderated the relationship between level of expertise and perceptual-cognitive skill. Practical and theoretical implications are presented and suggestions for empirical work are provided.