Zp上的矩阵A的左(右)逆

基于Zp 上的加法和乘法运算 ,定义了Zp 上的矩阵A及有关概念 ,讨论了Zp 上的方阵可逆及s×n矩阵存在左 (右 )逆矩阵的充分必要条件。     

Validity of Holland’s theory in adolescence: evidence from a Slovak sample

The underlying calculus assumption of Holland’s theory was tested in two samples of primary school students (N₁ = 400 and N₂ = 250) with an average age of 13.86 and 14.14 years, respectively. Both exploratory and confirmatory multidimensional scaling and Hubert and Arabie’s randomization test of hypothesized order relations were calculated. The circular spatial arrangement of RIASEC types was not confirmed in either of the two samples. The study discusses possible causes of the inappropriateness of using Holland’s model in an adolescent sample.

     

多重共振系统的分析方法

根据 KBM方法的思想引入平均法 ,给出了多重共振发生的条件。通过在多重共振关系式及对应的相位中引入相应的调谐参数 ,得到了分析多重共振分岔系统的改进平均法 ,并应用此方法结合奇异性理论研究了四圆盘扭振系统三重共振定常运动分岔问题     

求解一类特征值反问题的新方法

提出了求解一类特征值反问题的新方法 ,应用此法确定了发电机组轴系扭振系统的模型参数。此法力学概念明确 ,易于操作     

Coming‐of‐age in 1980s England: reconceptualising black students’ schooling experience

Much conventional ‘race‐relations’ research of the schooling of black youth has tended to be underpinned by models of social pathology and subjective discrimination. It is argued here that there is a need to reconceptualise black youths’ schooling experience within a theoretical framework that moves beyond mono‐causal explanations and examines the multifaceted dimensions of racially structured English schooling. Placing students at the centre of the research enables us to see how schooling for black female and male youths is a central part of an alienating social response to them, that results in their experience of a structured ‘different reality’ from the white population. In response to this, they have, collectively and individually, creatively developed coping and survival strategies. These are examined here.     

女性心灵世界的独特透视--论铁凝小说的"第三性"写作

铁凝小说以“第三性”写作的视角，构建了色彩斑斓的女性世界。透过对女性躯体的赞美、爱欲认同、心灵拷问、生存解读展示女性的生命状态和精神家园。     

知识经济环境下财务报告的创新

知识经济环境下，财务报告的内容和方式必须拓展、创新。在内容上，财务报告应反映人力资源、无形资产、社会责任、衍生金融工具等信息；在方式上，财务报告应运用多重计量手段，提供形式多样、信息多元、实时、前瞻的会计信息。     

秦汉绘画颜料考

秦汉时期处于中国封建社会的上升时期，绘画，雕塑和印染工艺都得到了长足的发展，秦汉时期对色彩的认识有了很大程度的提高，彦是彩绘的物质基础，中国绘画彦制造的五大原料来源，在汉代已经齐全，其绘画颜料的制作应用的成熟，对我国绘画颜料发展起到了承前启后的作用，并为我国古代绘画处于世界绘画史领先地位奠定了坚实的基础。     

Mathematics Education: A Vision of Its Evolution

Teaching in general and teachingof mathematics in particular are matters ofgreat importance for contemporary society.Over the years, societies have establishedinstitutions in order to incorporatemathematics and science into the culture ofsociety with the clear intention ofencouraging a scientific vision of theworld among the population. This intensesocial process of scientific enlightenment has helped us recognize theneed to implement educational modificationsin the specific field of mathematics basedon designs that are better adapted toschool practices. Mathematics educationdeals with the systematic study of theeffects of such processes; in this paper,we have decided to describe a certainevolution of its research problems. This revised version was published online in July 2006 with corrections to the Cover Date.     

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