关于平均指标若干问题的探讨

目前统计界在对平均指标的概念、数理基础及应用分析等方面的阐述还存在一些疑点。重新界定平均指标的概念、阐明统计平均数与数学平均数的区别、进一步明确调和平均数的应用场合，是非常必要的。     

普通高校高水平篮球队技术训练的宏观思考

结合多年率队训练与比赛的实践经验,总结出普通高校高水平篮球队技术训练的四点基本思路,并对六大基本技术训练中应遵循要点进行了分析与讨论.     

中距离不同投篮点投篮命中率的差异分析

通过对两个不同水平的班级的投篮命中率的测试和检验。发现中距离不同投篮点的投篮命中率不存在显著性差异,投篮的“习惯位置”只是心理的产物,它并不意味着“非习惯位置”的投篮低命中率。但比赛中的“习惯位置”有待于进一步探讨。     

海纳百川博采众长——谈蒋孔阳先生的学术品格

蒋孔阳先生虽然已离我们而去，却永远值得我们怀念。他的学术品格为：海纳百川，博采众长，巍然卓立。同时，这种品格的形成，又是以蒋先生的虚怀若谷、有容乃大的高尚人格为前提的。     

Selection methods for undergraduate admissions in Australia. Does the Australian predominate entry scheme the Australian Tertiary Admissions Rank (ATAR) have a future?

This article considers the Australian entry score system, the Australian Tertiary Admissions Rank (ATAR), and its usage as a selection mechanism for undergraduate places in Australian higher education institutions and asks whether its role as the main selection criterion will continue with the introduction of demand driven funding in 2012. Admission strategies for undergraduate places in Australian universities have remained unchanged for many years. The author concludes that the current entry scheme, the ATAR, will continue as a dominant selection criterion particularly for courses where demand exceeds supply, but ATAR-based selection will be insufficient to meet the participation targets set by the federal government. There is now an opportunity for universities to differentiate themselves by their admission strategies and to improve participation of equity groups through the normalisation of alternative entry mechanisms.     

运用有效方法 提高练琴效率

20世纪以后的钢琴演奏理论和钢琴教学,日益重视练琴的方式方法,练琴的方法与效率是直接影响演奏质量的问题,文章从把握音乐形象、了解分析作品、慢速练习、分手练习、重点难点练习等几个方面来说明,只有运用合理有效的方法,才能提高练琴效率的有效性。     

FID检测器的工作原理、操作条件及使用注意事项

本文通过对实际操作的总结,介绍了FID检测器的工作原理、操作条件以及使用注意事项。     

基于标准样地的国家级农用地等别质量监测点设置方法探讨

标准样地作为典型农用地等别质量的标志地,产生于农用地分等,省级以上标准样地分布的广泛性和代表性可以满足作为国家级农用地等别质量监测点的需求,研究建立基于标准样地的农用地等别质量监测点设置方法对创新农用地等别质量监测体系研究具有重要意义.基于此,本文选择业已完成农用地分等国家级汇总的冀豫鄂3省为案例区,探讨从这3省省级以上标准样地中选择合适样地作为国家级农用地等别质量监测点的方法.文章采用格网法与景观多样性指数法布设3省农用地等别质量监测样带,采用分层抽样法选取标准样地作为监测点,最终从确定的一纵三横四条监测样带中抽取出48个具有代表性的标准样地作为农用地等别质量的国家级监测点.研究认为作为国家级农用地等别质量监测点,首先需要监测点在等别质量上体现区域农用地等别质量骨架;其次监测点数目合理,以此才能在保证监测精度的前提下,有效减少数据冗余,同时节省监测数据采集的时间和经济成本.     

Taylor's decomposition on four points for solving third-order linear time-varying systems

In the present paper, the use of three-step difference schemes generated by Taylor's decomposition on four points for the numerical solutions of third-order time-varying linear dynamical systems is presented. The method is illustrated for the numerical analysis of an up-converter used in communication systems.     

Best entry points for structured document retrieval—Part II: Types,usage and effectiveness

Structured document retrieval makes use of document components as the basis of the retrieval process, rather than complete documents. The inherent relationships between these components make it vital to support users’ natural browsing behaviour in order to offer effective and efficient access to structured documents. This paper examines the concept of best entry points, which are document components from which the user can browse to obtain optimal access to relevant document components. It investigates at the types of best entry points in structured document retrieval, and their usage and effectiveness in real information search tasks.