二维变系数线性微分系统的求解定理

给出二维变系数线性微分系统在已知某解的情形下求通解的公式,并直接应用此公式,导出几类二维变系数线性微分系统的通解公式.对理论和实际应用都是有益的.     

略论戏曲程式的审美特性

戏曲程式从对生活形象的提炼开始,到"有意味的形式"的形成,乃至走向中国艺术共通的虚实相生、飞舞生动的最高境界,有着自己独特的反映社会生活和塑造人物形象的表现方式,不仅具有高超的艺术价值,而且具有鲜明的民族特色。     

This is not a race, this is a farce: Formula One and the Indianapolis Motor Speedway tire crisis

Formula One is the most technologically advanced and financially lucrative form of motorsport in the world with global audiences in the billions over the course of a season. A highly unusual and potentially deadly set of events took place during the Friday practice for the sixth annual United States Grand Prix at the Indianapolis Motor Speedway. Controversy and blame soon followed. Using Benoit's public relations and image restoration strategy framework, this paper examines the different strategies employed during the crisis by the Formula One teams, Michelin, the Federation Internationale De L’Automobile, Formula One Management, and the Indianapolis Motor Speedway. An examination of the crisis situation at the United States Grand Prix allows this study to expand Benoit's initial framework into sport as well as examining the implications for public relations and image repair strategies.     

经济表诠释

魁奈的经济表因晦涩难懂,被称为经济学说中的“司芬克斯之谜”。人们对经济表的普遍理解大都基于马克思对经济表的评述,而马克思的评述仅限于一版规范而均衡的图式表。魁奈的经济表共计12个版本,按各版本设制的时间先后和形式繁简,可分为“原表”、“略表”和“图式”;按经济表的均衡状态,又可分为均衡模式和非均衡模式。对经济表的各类版本和模式作出合理、全面的诠释,方见其蕴含的闪光的经济思想和宏观政策主张。     

Sample size determinations when two binomial proportions are very small

Sample size determination for testing the hypothesis of equality of proportions with a specified type I and type I1 error probabilitiesis of ten based on normal approximation to the binomial distribution. When the proportionsinvolved are very small, the exact distribution of the test statistic may not follow the assumed distribution. Consequently, the sample size determined by the test statistic may not result in the sespecifiederror probabilities. In this paper the author proposes a square root formula and compares it with several existing sample size approximation methods. It is found that with small proportion (p≦.01) the squar eroot formula provides the closest approximation to the exact sample sizes which attain a specified type I and type II error probabilities. Thes quare root formula is simple inform and has the advantage that equal differencesare equally detectable.     

学生自杀与学校责任——(2002)天法民初字第1424号民事判决书之检讨

注意义务是指导致损害赔偿责任的不是过错,而是指在具体情况下被告没有尽到合理的注意义务。注意义务已成为确定损害赔偿责任的一项重要衡量标准。注意义务本质上是一种衡量结果而非行为的工具。注意义务的判断标准有:被害人和加害人之间关系的紧密性;被告对损害的发生的合理预见性;在具体案例中,为保护一方之利益,而对他方课以注意义务,还要考虑是否合理公平且符合正义要求。     

论有利于弱者利益的法

国际私法对实质正义的追求必然产生在涉及弱者的领域中适用的法应是有利于弱者利益的。弱者的共性、系属公式的特点及国际国内社会的立法现状、司法实践决定了有必要将有利于弱者利益的法确定为系属公式。有利于弱者利益的法在适用中有不同的表现形式。     

奇异线性系统E_(n×n)=A_(n×n)X初值问题的通解公式

给出了奇异线性系统E_(nxn~x)=A_(nxn~x)的通解公式,并研究了初值问题解的结构.     

汉德公式B、P、PL变量的研究

人们对汉德公式B、P、PL变量存在模糊认识,实际上B、P、PL不是预防成本、概率、预期成本,而是它们各自的边际量:边际预防成本、边际概率、边际预期成本。在对最优预防水平的分析中指出了运用总量方法的不准确性,从而达到对该变量的准确理解。     

神秘的数字--巴尔末公式的由来

由氢的 4条谱线的波长与其极限波长之比得出四个杂乱的数 ,从其关系中得出巴尔末公式。