The associations of selected technical parameters with discus throwing performance: a cross-sectional study

The aim of this study was to identify associations between discus throwing performance and the technical parameters of: hip-shoulder and shoulder-arm separation, trunk forward-backward tilt, and throwing-arm elevation angles. Video data of male and female discus throwers' competitive performances were captured during major competitions. Real-life three-dimensional coordinates of 21 body landmarks, and the discus's centre, were obtained for 94 trials using the direct linear transformation procedure. Each technical parameter was reduced at six critical instants. The trend of each parameter across four standards of performance was analysed separately for both sexes. For the female throwers, hip-shoulder and shoulder-arm separations after the flight phase, as well as forward-backward trunk tilts at the beginning and end of the throwing procedure were associated with performance. For male throwers, only the hip-shoulder separation immediately before the flight phase was associated with performance. These findings suggest that the relationships between technical parameters and discus throwing performance are different for males and females. Our results suggest that elite female discus throwers are reliant on effective technique throughout the throwing procedure to achieve long distances, whereas male discus throwers may have a relatively homogeneous technique, and a dependence on physical strength to achieve their long throws.     

Manipulating Treatment Dose: Evaluating the Frequency of a Small Group Intervention Targeting Whole Number Operations

Treatment dose is an understudied aspect of treatment effectiveness. This study compared the frequency with which a small‐group mathematics intervention was delivered weekly (i.e., four times, twice, once) with a control condition while controlling for total duration. 101 at‐risk students in grades 2–4 were randomly assigned to a condition following universal screening and skill‐based assessments. Multilevel modeling was used to evaluate final score and growth on three measures. Results suggested that for the most proximal computation measure, treatment sessions occurring four times weekly produced clear benefits. On the application measure, students in all treatment groups outperformed students in the control condition. For the most complex computation measure, frequency was not a useful predictor. Grade was a moderating variable.     

Australian engineering educators’ attitudes towards Aboriginal cultures and perspectives

In Australia, representation of Aboriginal populations within the engineering profession is very low despite participation targets set by Government departments, professional bodies and Universities. Progressing the Aboriginal inclusion agenda within Australian Engineering Education requires a clearer understanding of engineering educators’ preparedness for increased numbers of students from this non-traditional cohort. This research stems from a recently completed project that explored Aboriginal perspectives in engineering education and proposed a model for embedding perspectives in curricula. Nine engineering academics were interviewed to explore attitudes towards Aboriginal perspectives in engineering and the viability of the proposed model. Results of the interviews indicate efforts to embed Aboriginal perspectives are starting from a small base of knowledge and experience. Individuals’ motivations and values indicate that there is significant support for improving this, but that efforts can be hampered by conceptions of Aboriginal perspectives that do not consider how Aboriginal knowledges may change engineering itself.     

Depressive Symptoms in Third‐Grade Teachers: Relations to Classroom Quality and Student Achievement

This study investigated associations among third‐grade teachers' (N = 27) symptoms of depression, quality of the classroom‐learning environment (CLE), and students' (N = 523, M_age = 8.6 years) math and literacy performance. teachers' depressive symptoms in the winter negatively predicted students' spring mathematics achievement. This depended on students' fall mathematics scores; students who began the year with weaker math skills and were in classrooms where teachers reported more depressive symptoms achieved smaller gains than did peers whose teachers reported fewer symptoms. teachers' depressive symptoms were negatively associated with quality of CLE, and quality of CLE mediated the association between depressive symptoms and student achievement. The findings point to the importance of teachers' mental health, with implications for policy and practice.     

Caring in the Ivory Tower

In this paper I argue that the teacher educators who deliberately create and nurture caring teacher–student relationships, despite the many challenges, benefit both themselves and their students in several ways. Although the notion that teachers should care for their students is not new, it may well be that professors too seldom communicate their caring clearly to students. First, I outline the literature on caring in education and provide examples of how professors show they care – and why students find this so important. Building on my belief that all (good) teaching involves humans in relation, I then describe how I use beginning-of-the-semester, one-to-one meetings with new students as one example of how caring can be operationalized. In an era when content-matter dissemination and accountability are increasingly reified, it is crucially important to see and treat our students as whole people rather than consumer-critics so that the dominant reductionist and consumerist traditions can be challenged and ultimately transformed.     

A Review of: “HMO/PPO Directory: Detailed Profiles of U.S. Managed Healthcare Organizations & Key Decision Makers, 2010. 22nd ed.”

The Fourth-year Academic Clinical Training and Teaching Selective (FACTTS) is a course taught by medical and library faculty on the practice of evidence-based medicine and critical appraisal of the medical literature. This study assesses the impact of the course on students' understanding of the subject matter by examining three years of pre- and post-test data and addresses whether the number of sessions in the course affects the knowledge gained by the students. The data show an improvement in the students' understanding of course material, but no benefit was found in having two versus three sessions.     

General Communication

THE MEDIA MONOPOLY by Ben H. Bagdikian (Boston, Massachusetts: Beacon Press, 1983—$8.95, paper).

COMMUNICATION TECHNOLOGIES &; SOCIETY: CONCEPTIONS OF CAUSALITY &; THE POLITICS OF TECHNOLOGICAL INTERVENTION by Jennifer Daryl Slack (Norwood, New Jersey: Ablex Publishing, 1984—price not given).

THE MIRROR MAKERS: A HISTORY OF AMERICAN ADVERTISING AND ITS CREATORS by Stephen Fox (New York: William Morrow, 1984—$17.95).

INSTEAD OF REGULATION: ALTERNATIVES TO FEDERAL REGULATORY AGENCIES edited by. Robert W. Poole, Jr. (Lexington, Massachusetts: Lexington Books, 1982—$28.50).

MASS MEDIA ISSUES: ANALYSIS AND DEBATE edited by George Rodman (Chicago, Minois: SRA Inc., 1984— price not given, paper).