基于LabVIEW虚拟仪器技术在谐波分析的应用

论文描述了电力网中的谐波污染,介绍了一种运用LabVIEW虚拟仪器技术对谐波进行分析的方法。文中模拟生成一畸变正弦信号,并运用该方法对其进行谐波分析,得出其基波与谐波的情况。     

高校大学生信息商测度--以300名大学生测试为例

在信息商概念及其模型的相关研究基础上，选择了西南科技大学的300名大学生作为问卷测试对象，运用信息商测试方法进行测试，并就结果进行分析，从而揭示出信息商三元素间、三元素与信息商值间的关系，对已建立的信息商模型进行实证研究。     

风险投资机会测评与资源配置战略

风险投资家面对一项投资机会应该如何应对其资源配置战略？本文经过研究，提出一种资源配置战略：通过对风险投资机会测评，找出机会成长所应缺乏的资源差距，从而制定风险投资机会配置战略。     

古"筑"探源--中国古乐器探索之一

作为中国古代重要乐器之一的筑,由于失传太久而众说纷纭。本文结合传世文献和出土材料,重点梳理了筑之得名原因、外形特征、弦之数目、形制大小(尺寸)、演奏方法以及与筑有关的人物和故事。     

Assessing Understanding of the Learning Cycle: The ULC

An 18-item, multiple choice, 2-tiered instrument designed to measure understanding of the learning cycle (ULC) was developed and field-tested from the learning cycle test (LCT) of Odom and Settlage (Journal of Science Teacher Education, 7, 123–142, 1996). All question sets of the LCT were modified to some degree and 5 new sets were added, resulting in the ULC. The ULC measures (a) understandings and misunderstandings of the learning cycle, (b) the learning cycle’s association with Piaget’s (Biology and knowledge theory: An essay on the relations between organic regulations and cognitive processes, 1975) theory of mental functioning, and (c) applications of the learning cycle. The resulting ULC instrument was evaluated for internal consistency with Cronbach’s alpha, yielding a coefficient of .791.     

一种基于虚拟仪器的局域网导弹测控仿真培训系统

介绍了一个局域网中的导弹测控仿真培训系统,包括硬件平台的搭建和应用软件的设计。讨论了基于LabVIEW软件平台仿真培训系统的关键技术问题。实践证明该设计方案可行且功能全、成本低。     

基于Web的虚拟实验系统的设计

介绍了将计算机网络技术、数据库技术与虚拟仪器技术相结合的实现基于Web的虚拟实验系统的方法。给出了虚拟实验室的特点,分析了单一软件实现及软件和硬件结合实现虚拟仪器仿真的方法,并提出了虚拟实验室的构建方法。     

Assessing practice-based influences on adolescent psychosocial development in sport: the activity context in youth sport questionnaire

The aim of this study was to provide initial evidence of validity and reliability of scores derived from the Activity Context in Youth Sport Questionnaire (ACYSQ), an instrument designed to offer a comprehensive assessment of the activities adolescents take part in during sport practices. Two studies were designed for the purposes of item development and selection, and to provide evidence of structural and criterion validity of ACYSQ scores, respectively (N = 334; M age = 14.93, SD = 1.76 years). Confirmatory factor analysis (CFA) supported the adequacy of a 20-item ACYSQ measurement model, which was invariant across gender, and comprised the following dimensions: (1) stimulation; (2) usefulness-value; (3) authenticity; (4) repetition-boredom; and (5) ineffectiveness. Internal consistency reliability estimates and composite reliability estimates for ACYSQ subscale scores ranged from 0.72 to 0.91. In regression analyses, stimulation predicted enjoyment and perceived competence, ineffectiveness was significantly associated with perceived competence and authenticity emerged as a predictor of commitment in sport. These findings indicate that the ACYSQ displays adequate psychometric properties and the use of the instrument may be useful for studying selected activity-based features of the practice environment and their motivational consequences in youth sport.     

农村中学生体育生活方式对身心健康的影响——以皖西北地区为例

应用心理卫生症状自评量表(SCL-90)及自编<中学生体育生活方式情况调查表>,对皖西北10县市农村中学随机抽取1825人进行问卷调查,分析了解农村中学生体育生活方式对身心健康的影响关系.结果表明:体育活动兴趣、每周活动频率、每次活动时间和运动强度对SCL-90量表诸多因子有显著影响,具备良好体育生活方式特征的学生中度及以上阳性因子检出率明显低于无良好体育生活方式的学生.身体形态、机能、素质和运动能力两组学生也有显著差异.结论:良好的体育生活方式对农村高中生的身心健康有很好的改善和促进作用.     

基于CAN总线的智能数据采集仪表设计

论述了一种基于CAN总线的以8031为核心的多通道、多功能、高精度的智能数据采集仪表的设计原理及实践方法。介绍了该仪表的硬件组成及软件程序流图,给出了该仪表的使用方法。