一类常微分方程的复振荡

主要研究了一类非齐次线性复常微分方程f" e-zf' p1(z)e-zf=p2(z)解的增长性,其中p1(z)为级小于1/2的超越整函数,p2(z)为级小于1的整函数.     

我国农村“留守儿童”现象的再思考

“留守儿童”产生的原因是多方面的,但主要与我国现行制度的不公平、农民工较低的经济收入、打工子弟学校教学质量较差和农民工子女受歧视有关。长期的“留守”生活,对儿童的人身安全、学习、品行、心理等方面都产生了诸多消极的影响。要解决农村“留守儿童”问题,需要全社会的共同关注、政府对相关政策法规的及时调整、提高农村学校的教育质量、＂留守儿童＂的父母加强对自己的职责认识,多管齐下,是必由之路。     

求高次方程整数解的递推方法

以往求n次方程∑i=0^naix^i=0(ai∈Z)的整数解，是从常数次a0的因数(负因数)搜索而得。这种方法，在计算机上不容易实现。本文给出一种适于计算机求解的递推方法。     

如何办好校报

校报由于容量小,作者队伍有限及办报环境的制约,办好也不容易.校报要办出品位,办出特色,一要争取学校的高度重视;二要提高编辑人员的业务素质;三要加强通迅员队伍建设.     

基于Web的课程授课计划管理系统

介绍了利用动态网页技术进行课程授课计划管理系统的开发。该系统极大地方便了查阅、填写、管理、交流，提高了效率。重点介绍了系统的工作流程、数据库结构和实现的技术要点。     

中学历史教育的忧思──兼谈历史的持续学习问题

历史知识的重要与青少年历史知识的贫乏令人汗颜，启人深思，究其所以，原因甚多。如何把历史教育的功利性与趣味性结合起来，如何使学生毕业后保留持续学习历史的兴趣，是当前中学历史教师需要深思和探讨的问题。笔者以为，当从转变教育现念、改革教法、激发学生兴趣、增强教师自身素养入手。     

Effect of conceptual change approach accompanied with concept mapping on understanding of solution concepts

The purpose of this study was to investigate the effect of conceptual change texts accompanied with concept mapping instruction, compared to traditional instruction (TI), on 8th grade students understanding of solution concepts and their attitudes toward science as a school subject. Solution Concept Test was developed as a result of examination of related literature and interviews with teachers regarding their observations of students difficulties. The test was administered to a total of 64 eighth grade students from two classes of a general science course, taught by the same teacher. The experimental group received the conceptual change texts accompanied with concept mapping in a lecture by the teacher. This instruction explicitly dealt with students misconceptions. It was designed to suggest conditions in which misconceptions could be replaced by scientific conceptions and new conceptions could be integrated with existing conceptions. The control group received TI in which the teacher provided instruction through lecture and discussion methods. The results showed that conceptual change text accompanied with concept mapping instruction caused a significantly better acquisition of scientific conceptions related to solution concept and produced significantly higher positive attitudes toward science as a school subject than the TI. In addition, logical thinking ability and prior learning were strong predictors for the concept learning related to solution.     

解证数学存在性问题的策略

分析了"存在性问题"中考题型的结构、形式、特征,给出了几种解证策略.     

浅议项目建设成本的全过程控制

随着建设市场竞争机制的不断完善，加强项目建设成本的全过程控制已被广大投资业主接受。由于工程项目建设制约因素多，管理要求严，控制点多，因此建设成本的控制是一项综合性很强很复杂的工作，需要建立一套完整的成本管理机制。     

17－18世纪世界整体发展中的俄国：压力与对策

17－18世纪世界整体发展给俄国带来了多方面的压力,近代俄国政府始终坚持“欧化”改革,积极参与国际竞争,到18世纪末,终于跻身世界强国之列,俄国的经验为今天的发展中国家参与全球化竞争提供了有益的启示。