儿童单纯性肥胖的危害及防治措施     

梁玉  何玉秀 《武汉体育学院学报》2005,39(8):47-51

近年来儿童单纯性肥胖越来越多,其身心健康问题日趋严重,成为社会广泛关注的儿童健康问题。目前,主要通过行为矫正、合理饮食和适量运动来控制儿童单纯性肥胖。主要从儿童单纯性肥胖的流行现状、诊断方法、对儿童健康的危害及防治措施等方面进行综述。  相似文献   

体育教学情境下学生学业求助行为的影响因素研究   总被引：1，自引：0，他引：1  

胡小岗 《四川体育科学》2004,(1):49-50

以258名大学1、2年级的学生为被试，根据交互作用原理考察了在体育教学情境下学生学业求助行为的影响因素．结果表明：自我效能、内在动机、任务定向目标等动机因素和课堂环境均与学业求助行为呈显著正相关．自我效能、内在动机、任务定向目标、课堂环境对学业求助行为构成显著回归效应。  相似文献   

读者服务人员的行为规范浅谈   总被引：1，自引：0，他引：1  

朱洁 《高校图书馆工作》2008,28(5)

论述了图书馆员行为与现代化设施的差距,提出了塑造规范馆员良好行为的具体措施。参考文献5。  相似文献   

试论古汉语名词作状语的性质和特点     

陈昌琳 《黔南民族师范学院学报》2007,27(1):14-18,26

古汉语普通名词作状语是汉语名词基本功能中的一种特殊表现形式,在其名词作状语的语法虚化过程中,名词的基本特征并未改变,但发生了偏移现象,名词作状语表示的是一种与该名词相关的动态或状态意义。名词状语一旦和它的中心语结合后,便构成了一个非常紧密、不可分割的整体,使彼此间的形象色彩互相受到感染,从而产生出特殊的形象意味和感情色彩,具有鲜明的修辞特点。  相似文献   

Evaluating the appropriateness of electronic information resources for learning     

Dinara Saparova  Nathanial S. Nolan 《Journal of the Medical Library Association》2016,104(1):24-32

  相似文献   

Comparison of three web-scale discovery services for health sciences research     

Rosie Hanneke  Kelly K. O'Brien 《Journal of the Medical Library Association》2016,104(2):109-117

Objective

The purpose of this study was to investigate the relative effectiveness of three web-scale discovery (WSD) tools in answering health sciences search queries.

Methods

Simple keyword searches, based on topics from six health sciences disciplines, were run at multiple real-world implementations of EBSCO Discovery Service (EDS), Ex Libris''s Primo, and ProQuest''s Summon. Each WSD tool was evaluated in its ability to retrieve relevant results and in its coverage of MEDLINE content.

Results

All WSD tools returned between 50%–60% relevant results. Primo returned a higher number of duplicate results than the other 2 WSD products. Summon results were more relevant when search terms were automatically mapped to controlled vocabulary. EDS indexed the largest number of MEDLINE citations, followed closely by Summon. Additionally, keyword searches in all 3 WSD tools retrieved relevant material that was not found with precision (Medical Subject Headings) searches in MEDLINE.

Conclusions

None of the 3 WSD products studied was overwhelmingly more effective in returning relevant results. While difficult to place the figure of 50%–60% relevance in context, it implies a strong likelihood that the average user would be able to find satisfactory sources on the first page of search results using a rudimentary keyword search. The discovery of additional relevant material beyond that retrieved from MEDLINE indicates WSD tools'' value as a supplement to traditional resources for health sciences researchers.  相似文献   

浅议隔位修饰现象     

郭育红 《长治学院学报》2003,20(4):70-71

文章将多年来在教学中所遇到的一些典型的隔位修饰的例句加以分类归纳 ,旨在帮助学生更好地理解这种句子结构 ,提高他们的阅读理解能力。  相似文献   

建设项目全过程跟踪审计探讨     

阎春彩  刘平 《河北工业大学成人教育学院学报》2007,22(3):55-58

建设项目全过程跟踪审计是接受业主委托,对工程项目进行全过程的跟踪审计工作。其具体内容包括在工程招标阶段协助业主起草招标文件提供咨询服务;在工程施工阶段参加图纸会审,现场勘查,隐蔽工程验收,工程变更、洽商、签证的确认,工程进度拨款的控制,以及最后对工程结算进行的审核。对工程进行全面、详细的跟踪审计工作,协助业主实现建设项目投资控制目标,以便最大的发挥业主投资效益。  相似文献   

Symmetric alteration of four knots of B-spline and NURBS surfaces     

LI Ya-juan WANG Guo-zhao 《浙江大学学报(A卷英文版)》2006,7(6):1084-1087

INTRODUCTION Modification of knots of a B-spline curve changes the shape of the curve. In some recent pub-lications (Juhász and Hoffmann, 2001; 2003; Hoff-mann and Juhász, 2004; Li and Wang, 2005), the authors studied the effect of the alteration of a single knot on the shape of the curve. Hoffmann (2004) and Li & Wang (2006) applied these theories into the constrained shape modification of B-spline and NURBS curves. Juhász (2001) and Hoffmann & Ju-hász (2005) studied the effe…  相似文献   

Shape modification of Bézier curves by constrained optimization     

WU Qing-biao  XIA Fei-hai 《浙江大学学报(A卷英文版)》2005,6(Z1)

The Bézier curve is one of the most commonly used parametric curves in CAGD and Computer Graphics and has many portant problem, and is also an important research issue in CAD/CAM and NC technology fields. This work investigates the curves to satisfy the given constraints and modify the shape of the curves optimally. Practical examples are also given.  相似文献