Teaching Undergraduate Mathematics on the Internet

This is Part 2 of a two-part study of how APOS theory may be used to provide cognitive explanations of how students and mathematicians might think about the concept of infinity. We discuss infinite processes, describe how the mental mechanisms of interiorization and encapsulation can be used to conceive of an infinite process as a completed totality, explain the relationship between infinite processes and the objects that may result from them, and apply our analyses to certain mathematical issues related to infinity.     

Improving the precision of the keyword-matching pornographic text filtering method using a hybrid model

With the flooding of pornographic information on the Internet, how to keep people away from that offensive information is becoming one of the most important research areas in network information security. Some applications which can block or filter such information are used. Approaches in those systems can be roughly classified into two kinds:metadata based and content based. With the development of distributed technologies, content based filtering technologies will play a more and more important role in filtering systems. Keyword matching is a content based method used widely in harmful text filtering. Experiments to evaluate the recall and precision of the method showed that the precision of the method is not satisfactory, though the recall of the method is rather high. According to the results, a new pornographic text filtering model based on reconfirming is put forward. Experiments showed that the model is practical, has less loss of recall than the single keyword matching method, and has higher precision.     

函数值域的解析法处理

求函数的值域是研究函数的重要内容,方法灵活多样.本文介绍通过构造解析几何模型,运用解析法来确定函数值域的几种途径,供大家参考.     

转型期成人高等教育人才培养模式探微

社会转型期，成人高等教育应立足于为地方经济建设培养一线急需的应用性、操作型人才。为此，应按职业岗位要求和学员认知规律构建课程体系，创新教学方法和手段，强化实践教学环节，实施弹性学制，建立与教学同步的评价体系和考核标准，加强管理人员和师资队伍建设。     

从"课程开发"到"课程理解"——现代西方课程模式的演化轨迹与当代启示

在课程论诞生尚不足百年的历史中,目标模式、结构模式、实践模式、过程模式、情境模式、批判模式的不断提出与系统建构,不仅预示着课程研究由"课程开发"到"课程理解"的话题转变,而且表征了课程研究由对"技术兴趣"的追求到"实践兴趣"乃至"解放兴趣"的价值转向。现代课程模式演化中所蕴含的课程精神对于全面理解与实践我国基础教育课程改革的理念、制度与方法具有诸多启示。     

优美图的若干性质

刻划了优美图的基本性质 ,给出了某些优美图的具体标号。     

以健康为理念促进学校体育改革

在"健康第一"的思想指导下,对传统的学校体育进行反思,从学校体育的观念和体育教学目标的更新,体育教学内容、方法和评价方式的改变等方面具体探讨学校体育的全方位改革.     

高等级公路维护与管理专业人才培养探析

高等级公路维护与管理专业是近年开发和发展起来的新专业,从社会需求及岗位需要、专业人才培养目标、课程设置、教师队伍等多方面对高等级公路维护与管理专业的人才培养进行分析探索,从而确定高等级公路维护与管理专业的人才培养方向。