对中国男篮在连续三次世界大赛中与竞赛对手的技术统计分析

采用文献资料法、观察统计法和对比分析研究法，对中国男篮与竞赛对手在连续3次世界大赛中的多项技术指标进行对比分析。统计数据表明中国队各项指标并没有得到提高，无论个人技术能力，还是整体战术意识都不能和欧美球队抗衡，中国队以前存在的问题没有得到解决，中国队确立自己的技术特点和战术打法势在必行。     

现代远程开放教育环境下信息统计的功能及开发途径

电大是开展现代远程开放教育的新型高等学校,其教育教学工作具有远程、开放和网络化的特点,这些特点对信息统计工作提出了特定的要求.本文根据现代远程开放教育对信息统计的要求,在分析电大信息统计主要功能的基础上,提出了进一步发挥其作用的途径.     

我国学习困难研究的现状与展望

结合中国期刊网搜索和手工补充搜索方法,对国内自1990到2005年16年来有关学习困难研究的文章进行了多层统计分析,内容包括期刊、年份、研究内容、对象、方法和作者单位。结果发现,国内对学习困难的研究越来越丰富,涉及的内容也越来越广,研究方法越来越多样化,但学习困难基础理论的研究与构建以及长期的纵向研究仍是努力的方向。     

试论统计改革

近几年我国统计改革进展缓慢,统计工作和统计教育跌入低谷。统计改革势在必行。统计控制、统计预测应成为统计工作的重要环节。     

正态广义非线性模型参数置信域的曲率表示

本文从几何观点研究正态广义非线性模型参数和子集参数的置信域的曲率表示,由于本文研究的非线性模型中随机误差的协方差阵可以是正定和非负定的,因此,有关结论推广与发展了现有文献中的许多结论。     

关于高职院校“学评教”活动的科学性探讨

“学评教”是一种评价,也是一种测量。其质量取决于本身的效度、信度和区分度。“学评教”应有一套科学的评估指标体系、严谨的评估步骤和科学的统计分析方法,使“学评教”成为真正科学的测量评价工具。     

Mean and Mean-and-Variance Corrections With Big Data

Mean and mean-and-variance corrections are the 2 major principles to develop test statistics with violation of conditions. In structural equation modeling (SEM), mean-rescaled and mean-and-variance-adjusted test statistics have been recommended under different contexts. However, recent studies indicated that their Type I error rates vary from 0% to 100% as the number of variables p increases. Can we still trust the 2 principles and what alternative rules can be used to develop test statistics for SEM with “big data”? This article addresses the issues by a large-scale Monte Carlo study. Results indicate that empirical means and standard deviations of each statistic can differ from their expected values many times in standardized units when p is large. Thus, the problems in Type I error control with the 2 statistics are because they do not possess the properties to which they are entitled, not because of the wrongdoing of the mean and mean-and-variance corrections. However, the 2 principles need to be implemented using small sample methodology instead of asymptotics. Results also indicate that distributions other than chi-square might better describe the behavior of test statistics in SEM with big data.     

Analytical method for promoting process capability of shock absorption steel

Mechanical properties and low cycle fatigue are two factors that must be considered in developing new type steel for shock absorption. Process capability and process control are significant factors in achieving the purpose of research and development programs. Often-used evaluation methods failed to measure process yield and process centering; so this paper uses Taguchi loss function as basis to establish an evaluation method and the steps for assessing the quality of mechanical properties and process control of an iron and steel manufacturer. The establishment of this method can serve the research and development and manufacturing industry and lay a foundation in enhancing its process control ability to select better manufacturing processes that are more reliable than decision making by using the other commonly used methods.     

对《全国高校图书馆事实数据库》统计工作的几点想法

针对如何进一步完善《全国高校图书馆事实数据库》统计工作中的完整性和准确性及规范化，及时准确地反映出高校图书馆的学术水平和科研成果，根据实际统计工作的经验对《全国高校图书馆事实数据库》统计中存在的问题谈几点想法。