散步对中老年高级知识分子心脏功能影响的追踪分析

对采用散步作为锻炼手段的40名中老年高级知识分子的心脏功能指标进行追踪测试，显示散步可使中老年高级知识分子的PR、HOV、HOI降低；SV、SI、VPE、EWK升高；而对于CO、CI、LVWI的影响较小。提示坚持散步对提高中老年高级知识分子的心脏功能有较好的作用。     

Age of Entry to Kindergarten and Children's Academic Achievement and Socioemotional Development

Research Findings: Data on more than 900 children participating in the National Institute of Child Health and Human Development Study of Early Child Care were analyzed to examine the effect of age of entry to kindergarten on children's functioning in early elementary school. Children's academic achievement and socioemotional development were measured repeatedly from the age of 54 months through 3rd grade. With family background factors and experience in child care in the first 54 months of life controlled, hierarchical linear modeling (growth curve) analysis revealed that children who entered kindergarten at younger ages had higher (estimated) scores in kindergarten on the Woodcock—Johnson (W-J) Letter-Word Recognition subtest but received lower ratings from kindergarten teachers on Language and Literacy and Mathematical Thinking scales. Furthermore, children who entered kindergarten at older ages evinced greater increases over time on 4 W-J subtests (i.e., Letter-Word Recognition, Applied Problems, Memory for Sentences, Picture Vocabulary) and outperformed children who started kindergarten at younger ages on 2 W-J subtests in 3rd grade (i.e., Applied Problems, Picture Vocabulary). Age of entry proved unrelated to socioemotional functioning.

Practice: The fact that age-of-entry effects were small in magnitude and dwarfed by other aspects of children's family and child care experiences suggests that age at starting school should not be regarded as a major determinant of children's school achievement, but that it may merit consideration in context with other probably more important factors (e.g., child's behavior and abilities).     

Disentangling the relationship between working memory and language: The roles of short-term storage and cognitive control

This study investigates the relationship between working memory and language in young children growing up in a multilingual environment. The aim is to explore whether mechanisms of short-term storage and cognitive control hold similar relations to emerging language skills and to investigate if potential links are mediated by related cognitive abilities. A sample of 119 Luxembourgish 6-year-olds completed several assessments of working memory (complex and simple span), native and foreign vocabulary, syntax, reading, rhyme awareness, and fluid intelligence. Results showed that short-term storage and cognitive control manifested differential links with developing language abilities: Whereas verbal short-term storage was specifically linked to vocabulary; cognitive control manifested unique and robust links with syntax and early reading development. The study suggests that in young children the working memory system is composed of separate but interacting components corresponding to short-term storage and cognitive control that can be distinguished by the roles they play in supporting language acquisition.     

On-the-Job Training: Prescriptions and Practice

This article discusses the status of workplace training in the United States, describes a model of how to conduct effective on-the-job training, and presents the results of a questionnaire based on a model designed to assess on-the-job training practices aboard Navy ships. The model views the on-the-job trainer as a coach who guides the trainee through a task using three steps: 1) assessment, 2) training, and 3) evaluation. The questionnaire was sent to over 5,000 shipboard supervisors; 2,321 responded. Results indicate that nearly 50% of the Navy supervisors who responded are not as effective as they could be. The implications of these findings for the civilian workplace are discussed.     

运动人体科学类课程实验教学改革初探

本文通过剖析国内体育院校运动人体科学类课程实验教学的历史和现状．结合当前教育部办公厅[2004]9号文件《普通高等学校体育教育本科运动人体科学类课程教学指导纲要》的改革精神和科技奥运理念，阐述了培养面向社会的创新型体育人才的教学培养目标，对实验教学的特殊要求，提出了运动人体科学类课程实验教学改革的必要兴和紧迫性，对运动人体科学类课程实验教学改革设想进行了初步探讨，对实验教学计划、实验教学内容和实验教学管理等方面提出了改革建议。     

Tablet computers in Philippine public schools: school-level factors that influence technology management and use

Many developing countries are investing in large-scale initiatives to deploy information and communications technology in schools. However, merely equipping schools with hardware and software does not guarantee that the technology is used effectively to improve learning outcomes. This study aims to identify factors that influence the use of technology in schools in a developing-country context. It investigates this through a multiple-case study of the Australian AID tablet computer programme in the Philippines, in which 1000 tablets were given to nine public schools for student use. Focusing specifically on the impact at a whole-school level, the study revealed factors affecting outcomes that were specific to a developing-country context, as well as confirming the relevance of more general factors identified in the literature. The study also brings to light tablet-specific benefits and issues in this context. These results have implications for the effective school-level implementation of technology programmes in developing countries. Recommendations that proceed from these are presented for policy-makers and school administrators looking to use these devices in schools.     

Discourse appropriation and category boundary work: casual teachers in the market

With the increasing casualisation of the teacher labour force, there is little written on the experiences of casual teachers and the challenges they face in brokering professional identities within constantly shifting and uncertain work contexts. Being a category bound casual teacher (a product of category boundary work) is a complex subject position. The aim of this article is to advance our understandings of the identity work inherent in casual relief teachers (CRTs) performativity. Anti-essentialist theories support this exploration of CRT subjectivities and processes of discourse appropriation. Using collective biography methodology as re-storied memory work, this article speaks back to neoliberal politics of casualisation. The stories draw attention to how both experienced practitioners and newly graduated teachers might ‘do’ category boundary work within the complexity of school politics as they navigate the uncertainty of gaining and maintaining employment in the Education market.     

Structural marginalisation,othering and casual relief teacher subjectivities

Produced through market relations of neoliberal managerialism, teacher subjectivities are becoming progressively commodified. With the increasing casualisation of the teaching workforce, the well-being and status of casual relief teachers (CRTs) can be seen as an area of concern, at risk of ‘flexploitation’. More than just a convenient labour pool, CRTs operate on the margins of school communities, a space fraught with a range of issues. In many instances, CRTs experience less job satisfaction; less rapport with students and colleagues and less access to school information, professional development, resources and teaching materials. This article draws on a positioning theory to frame the discursive production of CRT selves within the neoliberal milieu. It offers a detailed analysis of collective biographies that explore narrative formations of casual teaching. Schooling discourse is replete with metaphorical language that frames teacher positioning, and a range of existing metaphors in CRT literature highlight their vulnerability in particular. Rather than offering an analysis that addresses casual teacher performance as a problem to be solved, this article proposes that the relationship between ‘structural marginalisation and the ‘othering’ that CRTs can experience is associated with the politics of market-related performativity.