少年乒乓球运动员训练与比赛有关问题探究

就如何安排少年乒乓球运动员的训练 ,处理训练中量与强度的关系 ,如何抓住训练中的技术、身体、战术训练的重点 ,如何处理训练与比赛的关系等方面加以探讨 ,以便打好儿童少年训练的基础 ,提高训练效果 ,为上级乒乓球队伍输送优秀运动后备 ,提高训练的成材率。为从事儿童少年乒乓球业余训练的同行提供一些可借鉴的参考依据。     

解读名词数念的似是而非现象

英语名词单复数念变化,常常是初学者深感困扰、迷惑不解的问题,一定程度上影响其阅读和理解。本文从教学实践出发,较为详尽地总结了电大教材中常见的英语名词单复数念变化的实例,并加以条理化,旨在帮助电大学生系统地学习名词单复数变化的规律性,从而提高其阅读能力和速度。     

关于乒乓球高技术变革的理论思考

人转、拍转、球转“三转合一”打开了乒乓球高技术[注1]变革的新空间。牛顿第二运动定律是乒乓球高技术变革的核心原理。高性能的扭转爆发鞭冲型动力模式是乒乓球高技术变革的核心模式。     

浅析乒乓球新赛制对乒乓球技术的影响

本文对乒乓球新赛制出台后,当今世界乒乓球技术产生的变革以及今后乒乓球技术发展趋势作一简要分析.     

普通高校体育课教学质量评估的研究

通过调查，专家访谈，评估试验等方法对普通高校体育课质量评估进行了研究。根据普通高校体育课的特点，体育课质量高低应包括教与学及体育课的效果三方面的内容，评估档次分为优，良，中，差四档。     

中国优秀青年乒乓球运动员战术特征分析

近年来,乒乓球规则发生了3次重大变革,以2003年1月参加中国青年奥运集训比赛的114名运动员的1 128场比赛的现场统计为依据,分析不同竞技水平的男、女运动员在战术方面的差异及原因,并在此基础上指出目前国际乒乓球运动的发展趋势及中国乒乓球队在战术训练上应注意的问题和对策。     

一种基于数据挖掘技术的馆藏资源个性化推荐服务

本文介绍了一种如何将ID3决策树算法和关联规则应用于馆藏文献信息资源的个性化推荐服务当中去的方法.文中首先对读者借阅历史记录进行了挖掘和分析,利用决策树算法挖掘出可推荐的相关读者对象,再依据关联规则提取借阅历史记录并对其进行分析和挖掘,从中找出相关潜在的有用或有价值的规则,然后依据这些规则选择出最适合推荐的项目推荐给读者.该方式是为实现个性化推荐服务所进行的一种新的探讨,具有算法收敛性好,计算方法简单有效,可靠性高,推荐效果显著等优势,与传统推荐技术相比,能够更加全面、准确、清晰地进行文献推荐.理论和实践结果表明,所提出的这种方法是一种行之有效的形式.     

关于世界地区表“198古代地区”的探讨——与冯倍青同志商榷

通过分析古代地区表下各古代国家的历史,研究<中图法>(四版)类目划分的基本原则与修订重点,分析了"198古代地区"立类的合理性,并建议在198各下级类目增加类目注释,并修改类目注释示例.     

Overcoming Obstacles to Preventive Conservation Projects in Italy: With a Case Study of the Savoy Carriage Collection of the Presidency of the Republic

ABSTRACT

Working on preventive conservation in Italy is difficult but not impossible. After small successes and setbacks convincing museums to adopt elements of preventive conservation in the 1990s, the first author (Rossi Doria) was contracted for 15 years to preserve the historic carriages and associated objects of the Presidency of the Republic of Italy. This required patience to overcome or circumvent obstacles such as an inflexible bureaucracy and the absence of any formal recognition of preventive conservation within the educational and contractual systems for heritage conservation. The key factors in his success were the support of the curators, the financial and planning autonomy of the Presidency, and the obvious need for conservation and preservation of these elegant and complex objects. The program began in 2001 with the recovery of the forgotten collection from inappropriate storage in several locations. The entire collection was surveyed and recorded, not only the carriages but also thousands of harnesses, saddles, clothing, fabrics, weapons and memorabilia. Multiple preventive and interventive actions were undertaken, such as pest eradication for all sensitive materials, environmental surveys, and everyday maintenance, as well as complex treatments for the ornate carriages. Analysis by country of published articles on preventive conservation and of IIC membership both confirm that the topic is not as well established in Italy as in many other countries. Some reasons and solutions are proposed.     

Exploring data use practices around Europe: Identifying enablers and barriers

In this article we explore what data-based decision making use looks like in schools in five different countries (United Kingdom, Germany, Poland, Lithuania and the Netherlands). We explore for what purposes data are used in these countries and what the enablers and barriers to data use are. The case study results show that schools in all five countries use data for school development, accountability, and instructional improvement. Also, the schools in the five countries struggle with the same type of problems: e.g. lack of access to high quality data, lack of professional development in using data, and a lack of collaboration around the use of data. Finally, we discuss how some enablers can turn into barriers for effective data use.