Xn+Yn=Zn n≥3时无整数解

本文利用首创的互补开方法,来证明此定理。     

On some difference sequence spaces defined by a sequence of Orlicz functions

INTRODUCTION Let w be the set of all sequences of real or com- plex numbers and R∞, c and c0 be the sequence spaces of bounded, convergent and null sequences x=(xk), respectively. A sequence x∈R∞ is said to be almost convergent (Lorentz, 1948) if all Banach limits of x coincide. Lorentz (1948) proved that 1 c? = ??? x =( xk ) :linm 1n ∑kn= xk s exists, uniformly in s???. Maddox (1967; 1978) has defined x to be strongly almost convergent to a number L if 1 linm 1n ∑k n= xk s? L=0,…     

歌妓角色与词人身份———词人笔下的歌妓形象

歌妓群体成为唐宋词中大量作品当然的抒情主人公, 词人从多方面描写其形神, 梦幻交织、亦凡亦仙, 成为艺术化的审美对象。特殊的身份使她们在词人生活中只能是被动的“他者”, 被欣赏、被使用的男性欲望、情感的承载者。     

打造强势“双师型”教师队伍的实践

在高职教育中,加强教师队伍建设,优化教师队伍结构,全面提高教师队伍的综合素质,必须建设一支高素质的集专业理论与实践技能于一身的“双师型”教师队伍。各高职院校要强化第一资源的“双师型”师资建设,做好相关工作。     

量子埃里克森循环性能的热力学分析

利用修正的理想气体状态方程推导出以理想玻色气体4He为工作物质的量子埃里克森热机效主和输出功的普遍表达式，并对结果进行一些有意义的讨论，所得结论可对低温气体热机的研究提供理论依据。     

对中小学网管人员的能力和素养的探讨

随着“校校通”工程的实施 ,各中小学校园网的建成 ,对教育领域最基层管理人员的专业能力与素养的培养被逐渐引起重视。笔者以从事基层网络管理、信息教育的经验为鉴 ,简述了几年来管理学校计算机网络和计算机设备的一些心得与技巧 ,提出了中小学网管人员必备的能力和素养之浅见 ,以此作为各中小学网管人员学习课程的一点参考。     

Teamwork and Entrepreneurial Behavior among K-12 Teachers in the United States

Abstract

This study attempted to identify the predictors of entrepreneurial behavior by assessing a series of variables that included teamwork skills and demographic variables, and to explore teachers’ experiences with teamwork. A sample of 367?K-12 public school teachers completed the survey. The findings indicated that teamwork predicts entrepreneurial behavior. Most participants received teamwork training through their school districts. Barriers to teamwork included time constraints, individual differences, and inability to collaborate.     

Variation among schools on classroom practices in science based on TIMSS‐1999 in Turkey

The purpose of this study was to investigate the differences among schools using student responses in the Trends in Mathematics and Science Study–1999 (TIMSS‐99) data. Schools were classified into two groups based on eighth grade students' overall achievement in science. Two different discriminant function analyses were performed to distinguish high‐ and low‐performing schools, based both on classroom practices and factor structures (student‐centered activities, teacher‐centered activities, attitudes toward technology use, socioeconomic status [SES], and doing well in science). The results indicate that there were significant differences between the two classifications of schools on ten variables regarding classroom practices and activities, and 29 variables regarding classroom practices, attitudes toward science, use of the computer and overhead projector (OHP), parental background characteristics, and need to do well in science. Contrary to general expectations, technology use (computer, OHP, etc.) was found to be negatively related to science achievement. Teachers should be trained on how to use technology in their classrooms. Turkey recently revised its curriculum to a student‐centered approach and this might increase students' ability to transfer knowledge into real life. Teachers and schools should pay more attention to SES effects. Teachers should also work toward building students' confidence in science. © 2007 Wiley Periodicals, Inc. J Res Sci Teach 44: 1417–1435, 2007     

两个特殊的查找算法

给出了一般有序表的随机查找算法和一类特殊有序表（单词）的分块查找算法。