提高投篮命中率训练方案的优化与研究     

李再兴  刘小湘 《湖北体育科技》2002,21(2):219-220,223

通过查阅文献资料，专家咨询与长期实践，收集了大量提高投篮命中率的训练方法，经运用体育统计理论分析处理，优化出4种训练方法，在普通高校运动队的训练中进行对比实验。实验证明，用优化出的训练方法训练，更有效的提高了运动员投篮命中率。  相似文献   

《唐摭言》、《唐才子传》所记李洞事迹考     

吴在庆 《周口师范学院学报》2002,19(4):25-30

《唐摭言》，《唐才子传》所载李洞事迹有所讹误，如李洞在昭宗时并无凡三上不第之事；裴贽也并非因科场上有意屈抑李洞而遭无子的无谴，李洞之不第，乃与其崇奉贾岛，考场上的唐突之举，及其诗风的奇峭苦涩为礼部所厌恶有关。  相似文献   

冷轧纯铝板在不同温度退火后的织构   总被引：1，自引：0，他引：1  

任德华  杨瑞东  付再琦  孙骏 《昭通师范高等专科学校学报》2002,24(5):16-19

通过对单向冷轧的纯铝板在140℃，200℃，300℃，380℃退火，用X射线衍射物相分析，研究冷轧纯铝板在退火前和各温度退火后的织构，结果表明，在140－300℃的中低温退火后，板中的形变强织构被削弱，产生新的退火织构；在380℃的高温退火后，板中的形变强织构被进一步增强。  相似文献   

The dynamics of technological change in UK retail banking services: An evolutionary perspective   总被引：1，自引：0，他引：1  

Davide Consoli 《Research Policy》2005,34(4):461-480

The purpose of this paper is to elaborate an evolutionary perspective on the process of structural change that has characterized the banking industry in the United Kingdom (UK). For this purpose, the evolution of retail financial services is contrasted against the backdrop of the implementation and development of information and communication technologies (ICTs). The paper delves into the sources and the effects of technological change in banking over a long-term perspective (1840s-1990s) to point out the significance of the opportunities and the constraints that have shaped the growth and development of this industry. This is interpreted as a three-stage evolutionary process driven by intertemporal coordination across several complementary domains, including activities of production, business organization, consumption and the underlying regulatory setting. It is concluded that the evolution of UK retail banking displays the characteristics of a distributed process of innovation in which developers of technologies, service suppliers and customers contribute to the process of structural change of the industry.  相似文献   

新加坡人景仰徐霞客     

石在 《文化交流》2008,(6):78-81

今年春节过后,笔者和两位北京的朋友周艾若、曾俊伟,同时收到寄自新加坡的一只大信封.这件题为"敬请出任(海外首届创会)顾问"的"专函",于首行文字称"新加坡徐霞客学会于2007年9月7日在社团注册局审批下正式成为非营利、义务的文化社团".函件由该学会会长许铭真签发.这就是说,在海外研读中国古代文化名人、明末地理地质学家,旅行探险家、游记文学家徐霞客,继美国旧金山之后的第二个研究会宣告成立了.作为中国徐霞客研究会的成员,闻之欣喜异常.……  相似文献   

浅析虚报注册资本罪的若干问题     

王利宾  王在福 《河西学院学报》2006,22(1):4-6

虚报注册资本罪是1997年刑法新增的一个罪名,我国刑法规定其犯罪手段包括使用虚假证明文件或者采取其他欺诈手段,笔者认为应只为使用虚假证明文件。虚报注册资本罪与虚假出资罪、抽逃出资罪尽管有一定的相似之处,但其区别又是十分明显的。关于虚报注册资本罪与诈骗罪的关系以及虚报注册资本罪的犯罪形态问题应该具体分析,不能一概而论。  相似文献   

乒乓球弧圈球的空气动力学原理及其飞行轨迹的仿真分析   总被引：1，自引：0，他引：1  

孙在  余广鑫  郭美  朱丽莉  杨军  何正兵 《体育科学》2008,28(4):69-71

建立了乒乓球运动的动力学数学模型.弧圈球的运动是一个各种物理力学综合作用的过程,这些力包括重力、浮力、附加质量力、飞行阻力和Magnus力.通过求解乒乓球运动的数学模型,分析了弧圈球在不同情况下的飞行轨迹和运动规律.结果发现,乒乓球的旋转速率对其运行轨迹有直接影响,不同旋转速率的弧圈球的第1弧线和第2弧线有明显的区别.深入分析表明,弧圈球的速度和加速度在飞行过程中是不断变化的,Magnus力和球运动方向的变化是导致乒乓球速度变化的重要原因.  相似文献   

大灾过后,人畜严防三类疾病     

杨再  陈佳铭  任春来 《环球赛鸽科技》2008,(3)

  相似文献   

Understanding Bland Altman analysis     

Davide Giavarina 《Biochemia medica : ?asopis Hrvatskoga dru?tva medicinskih biokemi?ara / HDMB》2015,25(2):141-151

In a contemporary clinical laboratory it is very common to have to assess the agreement between two quantitative methods of measurement. The correct statistical approach to assess this degree of agreement is not obvious. Correlation and regression studies are frequently proposed. However, correlation studies the relationship between one variable and another, not the differences, and it is not recommended as a method for assessing the comparability between methods.
In 1983 Altman and Bland (B&A) proposed an alternative analysis, based on the quantification of the agreement between two quantitative measurements by studying the mean difference and constructing limits of agreement.
The B&A plot analysis is a simple way to evaluate a bias between the mean differences, and to estimate an agreement interval, within which 95% of the differences of the second method, compared to the first one, fall. Data can be analyzed both as unit differences plot and as percentage differences plot.
The B&A plot method only defines the intervals of agreements, it does not say whether those limits are acceptable or not. Acceptable limits must be defined a priori, based on clinical necessity, biological considerations or other goals.
The aim of this article is to provide guidance on the use and interpretation of Bland Altman analysis in method comparison studies.Key words: Bland-Altman, agreement analysis, laboratory research, method comparison, correlation of data  相似文献   

“Crossing the Rubicon”: Understanding Chinese EFL students’ volitional process underlying in-class participation with the theory of planned behaviour     

Davide Girardelli  Vijay K. Patel  Janine Martins-Shannon 《Educational Research and Evaluation》2017,23(3-4):119-137

An extended model based on the theory of planned behaviour (TPB) was used to study Chinese English as a foreign language (EFL) students’ in-class participation. The model included the core TPB constructs (behavioural intentions, attitudes, subjective norms, and perceived behavioural control/self-efficacy) and 2 additional constructs (foreign language classroom anxiety and face-saving) frequently discussed in the literature about Chinese EFL classroom dynamics. A total of 199 Chinese students enrolled in a Sino-American international branch campus were surveyed. The results of a partial least squares (PLS) path modelling analysis revealed that attitudes, subjective norms, perceived behavioural control/self-efficacy, and face-saving explained 46% of the variance in intentions to participate in English in class. Perceived behavioural control/self-efficacy fully mediated the negative indirect effect of foreign language classroom anxiety on intentions. Pedagogical implications and future directions are discussed for implementation purposes.  相似文献