A canonical correlation analysis of demographic information and the behavior problem checklist

The purpose of the present study was to do a canonical correlation analysis of demographic information and the Behavior Problem Checklist (BPCL) in order (a) to employ the demographic information in a manner that had not been possible using other methods, and (b) to examine the four factors on the BPCL as a general measure of mental health and mental illness. Subjects were 2,314 children who differed in grade in school, sex, social class, ethnic group status, and type of class in school (i.e., regular or special education). Teachers provided the demographic information and the BPCL ratings. It was found that the four factors on the BPCL were significantly correlated. It was also found that there were four canonical correlations between the demographic information and the BPCL ratings of which three were and one was not significant. The meanings of the four canonical correlations were described for the demographic information and for the four factors on the BPCL.     

Mixed Reality Lab at Mississippi State University Libraries

Virtual and Augmented Realities are advancing technologies that are becoming more popular in gaming and programming communities. However, virtual reality has been in development for decades. As libraries are often at the forefront of offering new and advancing technologies to their communities, virtual and augmented reality programs have become new additions to library services. While gaming is the prominent use of these technologies, virtual and augmented reality affords many educational opportunities. Mississippi State University Libraries have recently added a virtual/augmented reality lab as part of its library program.     

Are you a budding academic writer?

Academic writing can seem a daunting prospect although with the right support and information it can be more achievable than you think. In this first set of editorial comments of 2016, editors from all sections of the Health Information and Libraries Journal outline the origins of the individual section of the journal which they oversee and highlight some of the things you might want to consider when thinking of submitting your writing for publication.     

重构中的图书馆软件产业

2005年图书馆软件行业的重新洗牌,昭示了如今的风云变幻、吐故纳新乃至沧桑巨变。2006年图书馆集成管理系统(ILS)产业稳步发展,总收入从2005年的大约5.35亿美元提高到了2006年的5.7亿美元。一些公司ILS核心产品的收入在减少,而基于Web界面和电子内容管理的新产品收入在增加。无     

Lunge performance and its determinants

For activities such as squash, badminton and fencing, the ability to quickly complete a lunge and return to the start or move off in another direction is critical for success. Determining which strength qualities are important predictors of lunge performance was the focus of this study. Thirty-one male athletes performed: (1) a unilateral maximal squat (one-repetition maximum, 1-RM) and unilateral jump squat (50% 1-RM) on an instrumented supine squat machine, and (2) a forward lunge while attached to a linear transducer. We performed stepwise multiple regression analysis with lunge performance as the dependent variable and various strength, flexibility and anthropometric measures as the independent variables. From the many strength and power measures calculated, time to peak force was the best single predictor of lunge performance, which accounted for 55% of the explained variance. The best three-variable model for predicting lunge performance accounted for 76-85% of the explained variance. The models differed, however, according to whether lunge performance was expressed relative to body mass (time to peak force, mean power and relative strength = 76%) or taken as an absolute value (time to peak force, leg length and flexibility = 85%). We conclude that one to two trials were reliable for strength diagnosis and that one strength measure cannot accurately explain functional performance because other factors, such as body mass, flexibility and leg length, have diverse effects on the statistical models.     

Student activity levels, lesson context, and teacher behavior during middle school physical education

There is little research on students' engagement in physical activity in middle school physical education (PE). We observed student activity, lesson context, and teacher behavior in 430 PE lessons taught by 126 teachers in 24 schools. Variables were analyzed by mixed-model nested analyses of covariance. Boys were more active than girls overall and during skill drills, game play, and free play. Student activity varied by lesson context, with fitness activities producing the most activity. Class size was negatively associated with student activity. Daily PE contributed a weekly total of 25 min of vigorous activity and 83 min of moderate-to-vigorous activity--much less than national objectives. Results suggest that numerous opportunities exist for increasing student physical activity during middle school PE.