薄弱学校改进的个案研究

单从某些局部因素出发去改进薄弱学校的尝试往往是很难成功的.为此,本文选取了H中学作为个案,以学校作为改进单元运用质的研究方法进行了深入的研究.研究发现:学校改进是外驱力和内驱力共同作用的结果,在学校改进的不同时期内外驱力所起的作用是不同的;影响学校改进的主要因素包括学校制度的改进、关爱共同体的形成、校长的领导力、教师专业成长、环境建设、教育资源的共享等.薄弱学校改进的过程为学校自身发展、外部合作者和决策者提供了多方面启示.     

酪蛋白磷酸肽的功能及其制备

酪蛋白磷酸肽是从牛乳酪蛋白中水解分离所得的一种生物活性肽,具有很强的促钙吸收活性。本文就酪蛋白磷酸肽的结构、功能、制备、理化性质、检测等进行了系统的概述。     

高校工科教师胜任力的研究——模型构建与实证分析

通过对参与"卓越计划"试点高校的学生和教师进行访谈和问卷调查,将高校工科教师胜任力归纳为四个特征群,即素质、能力、知识和个人特质。在对工科教师胜任力架构进行主成分分析后得知:决定工科教师胜任力重要的主成分是素质群和个人特质群,其次是能力群,再次是知识群,胜任力的养成尤其应注重隐性的素质和个人特质两个维度;"卓越计划"下工科教师的胜任力结构具有发展度(胜任力测评)、协调度(胜任力各维度的均衡)和持续度(胜任力的持续提升)三个明显特征。     

Effects of two physical education programmes on health- and skill-related physical fitness of Albanian children

This study aims to evaluate the effectiveness of two school-based physical education (PE) programmes (exercise-based and games-based) compared with traditional PE, on health- and skill-related physical fitness components in children in Tirana, Albania.

Participants were 378 first-grade (6.8 years) and 389 fourth-grade (9.8 years) children attending four randomly selected schools in Tirana. Twenty-four school classes within these schools were randomly selected (stratified by school and school grade) to participate as exercise group (EG), games group (GG) and control group (CG). Both EG and GG intervention programmes were taught by professional PE teachers using station/circuit teaching framework while CG referred to traditional PE school lessons by a general teacher. All programmes ran in parallel and lasted 5 months, having the same frequency (twice weekly) and duration (45 min). Heart rate (HR) monitoring showed that intensity during PE lessons was significantly higher in the intervention groups compared with control (P < 0.001). Both PE exercise- and games programmes significantly improved several health- and skill-related fitness indicators compared with traditional PE lessons (e.g. gross motor skill summary score: 9.4 (95% CI 7.9; 10.9) for exercise vs. control and 6.5 (95% CI 5.1; 8.1) for games vs. control, cardiorespiratory fitness: 2.0 ml O₂ · min^?1 · kg^?1 (95% CI 1.5; 2.4) for exercise vs. control and 1.4 ml O₂ · min^?1 · kg^?1 (95% CI 1.0; 1.8) for games vs. control). Furthermore, compared to games-based PE, exercise-based PE showed more positive changes in some gross motor coordination skills outcomes, coordination skills outcomes and cardiorespiratory fitness. The results from this study show that exercise- and games-based PE represents a useful strategy for improving health- and skill-related physical fitness in Albanian elementary school children. In addition, the study shows that exercise-based PE was more effective than games-based PE in improving gross motor function and cardiorespiratory fitness.     

有助于程序理解的软件动态扇入扇出度量

In this paper,an approach to use run-time information to discover knowledge about software systems thus fa- cilitating program comprehension is presented.Some dynamic metrics based on traces of the subject system execution are proposed.A method of getting these dynamic metrics is introduced,in which instrumentation is implemented by using re- flective mechanism based on an open compiler.The system run-time information is captured during the instrumented system running and is then analyzed to get these dynamic metrics.A case study is given to illustrate the use of these dynamic metrics, i.e.,identifying critical components of the subject system.These critical components should be focus on user attentions in order to understand the subject system well.     

基于零部件归并问题的采购策略模型

针对不同价格和不同质量要求的 2种功能可互换的零部件 ,提出了一个研究零部件归并问题的数学模型 .在对零部件质量要求不同而供应商根据购买量提供的折扣不同的情形下 ,该模型可以帮助采购经理决定如何将零部件归并后统一购买以使得总购置成本最低 .     

江西省开发区投资环境与投资效益的比较分析

为了实现开发区建设的目标,必须全面分析江西省各开发区的投资环境与投资效益,以利于采取有效的对策。文章主要采用主成分分析法,并结合聚类分析方法,以江西省各开发区的投资环境与投资效益作为研究对象,比较各开发区的发展水平。     

论我国产品责任惩罚性赔偿制度之完善

我国《侵权责任法》在产品责任领域规定了惩罚性赔偿制度,然而还存在不足之处。惩罚性赔偿制度的适用条件过于严格,而赔偿数额又缺乏可操作性的规定,这将影响此制度的价值。文章探讨了该制度的适用范围,和惩罚性赔偿数额确定可操作性的标准。     

铁水包底吹喷粉脱磷预处理技术的可行性研究

提出了铁水包底吹喷粉脱磷预处理的技术。并从物料平衡、温降模型、及砖型设计等方面分析论述该技术的可行性。     

五种中药水提物清除自由基效应的比较

采用传统方法提取陈皮、葛根、黄芩、槐花米,银杏叶5种中药的水溶性成分,用分光光度法检测水提物对羟自由基（·OH）和超氧阴离子自由基（0i）的清除能力．结果表明,5种中药水提物对·OH和O2-均具有良好的清除作用．比较发现,对于清除羟自由基而言,槐花米的清除效果最佳,当原液稀释2倍时清除率达到了87．40％;对于清除超氧...