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     

经济全球化与中国民主政治发展策略

经济全球化是人类社会生存发展的客观趋势，是资本主义生产方式运动的产物。它不仅给世界各国经济的发展提供了前所未有的机遇，同时，也给当代人类社会的诸多领导带来挑战，尤其是对中国民主政治发展的挑战，我国既要面对经济全球化作出新的选择，迎接新的挑战，又要看到我国民主政治发展的新曙光。     

可保利益原则对人效力及被保险人概念探讨

我国现行保险法中被保险人概念过于模糊 ,且对人身保险和财产保险中的被保险人概念统一定义的模式缺乏逻辑和实践的支撑 ,应当修改。可区分定义为 :财产保险被保险人是保险合同上保险金给付请求权的享有人 ;人身保险被保险人是保险合同上被作为保险标的的生命或身体的所有人。现行法关于可保利益原则的规定亦是不妥当的。可具体修改为 :财产保险中被保险人在承保危险发生时对保险标的具有可保利益是保险金给付请求权行使的条件 ;人身保险中 ,受益人的指定以必须取得被保险人的同意为原则 ,并附加部分例外。     

Polymorphisms in the genes for coagulation factor II,V,VII in patients undergoing coronary angiography

INTRODUCTIONCoronaryarterydisease (CAD)continuestobethemajorcauseofmorbidityandmortalityinourcountry .TheactivityofbloodcoagulationfactorshasbeenshowntobeanimportantriskindicatorforCAD .However,circulatinglevelsofcoagulationfactorsmaynotaccuratelyreflectt…     

对地方高校“九五”期间发展状况的回顾

“九五”期间，按照“发展才是硬道理”的思路，各地方高职院校在各项工作中都取得了可喜的进展，但是在发展的道路上也遇到了许多困难，笔对数省的地方高职院校在“九五”期间的发展情况进行了专题调研，总结了成绩，也找出了影响可持续发展的因素。     

浅谈市场经济下的物资设备采购

本文试图在我国市场经济初步形成、逐步完善的特定历史时期探索一种适合高等院校物资设备采购工作的新模式,更好地服务于我国的高等教育事业。     

河北省曲周县农田生态系统碳循环及碳效率研究

农田生态系统在全球碳循环中具有突出地位,研究农田生态系统碳循环过程、掌握地区碳收支情况,对挖掘农田多功能性、发展低碳农业具有重要意义,同时为制定农业生态补偿提供依据。本文综合分析农田生态系统碳循环过程,并根据实际情况修正核算了碳排放系数,从碳输入、碳输出、固碳三个过程对曲周县农田生态系统碳源和碳汇以及碳效率进行研究。结果表明,2011年曲周县农田生态系统碳平衡值为-3.30万t,当年可固定碳17.61万t。土壤呼吸、农用机械以及氮肥、磷肥的使用是造成碳排的主要因素。各乡镇农田生态系统碳源和碳汇情况有所差异,曲周镇等乡镇由于高投入低产出导致当年系统为碳源,而候村镇、河南疃镇等乡镇由于低投入、高产出导致当年系统为碳汇。曲周县农田生态系统虽整体表现为碳源,但仍具有较强的碳汇能力以及较高的碳效率,在一定程度上可弥补碳排放对环境造成的影响。