城市污染源S0_2扩散规律研究

通过剖析几种常用大气污染物扩散模式,选取合适的大气扩散场参数,建立了适用于郑州市区的污染源SO2扩散模式。用该模式计算市区重点污染源典型月所排SO2浓度,其结果与实际监测结果进行对比分析,对比结果表明,在采暖期和非采暖期两个典型月的相关系数分别为0.727和0.713,达到显著水平。     

高等师范学生教师职业技能训练及培养模式新论

高等师范学生的教师职业技能训练,自国家1995年《教师资格条例》颁布以来,虽在全国有关高校一度出现好的势头,但很快被我国高校扩招的形势冲淡了,目前情况令人担忧。因此,在我国高等教育发展的新形势下,从宏观上构建高等师范学生教师职业技能培养模式应是当务之急。     

概化理论在语言测试新进展中的应用

概化理论是一种发展较晚但功能全面的现代测试理论，能有效地设计、分析和评估测试项目。直到上个世纪八九十年代，Robert Brennan等人开发了GENOVA等一系列应用软件后，概化理论才在心理和教育测量领域的研究中逐渐受到重视，此后，运用概化理论研究实际问题的项目也逐渐多了起来。概化理论与项目反应理论属于不同的理论范畴，它们的基本假设也有很大的差别。     

普通高校体育教育专业田径专修跨栏教学素质教育模式的再探

对体育教育专业如何与“素质教育”良性接轨进行了探索与研究,旨在能够为全面推进体育教育专业素质教育改革起到抛砖引玉的作用.研究结果表明：设计的教学模式有助于实现从应试教育向素质教育的良性转化;还有助于在普通高校体育教育专业田径专修跨栏教学中增强学生的自信心,提高教与学的效率.     

Philosophy of chemistry and the image of science

The philosophical analysis of chemistry has advanced at such a pace during the last dozen years that the existence of philosophy of chemistry as an autonomous discipline cannot be doubted any more. The present paper will attempt to analyse the experience of philosophy of chemistry at the, so to say, meta-level. Philosophers of chemistry have especially stressed that all sciences need not be similar to physics. They have tried to argue for chemistry as its own type of science and for a pluralistic understanding of science in general. However, when stressing the specific character of chemistry, philosophers do not always analyse the question ‘What is science?’ theoretically. It is obvious that a ‘monistic’ understanding of science should not be based simply on physics as the epitome of science, regarding it as a historical accident that physics has obtained this status. The author’s point is that the philosophical and methodological image of science should not be chosen arbitrarily; instead, it should be theoretically elaborated as an idealization (theoretical model) substantiated on the historical practice of science. It is argued that although physics has, in a sense, justifiably obtained the status of a paradigm of science, chemistry, which is not simply a physical science, but a discipline with a dual character, is also relevant for elaborating a theoretical model of science. The theoretical model of science is a good tool for examining various issues in philosophy of chemistry as well as in philosophy of science or science studies generally.     

基于模糊数学的塑烧板除尘计算机控制系统

介绍了塑烧板除尘器的系统总体结构和工作原理,阐述了模糊控制模型的建立。     

基于时态关系模型的儿童保健系统的设计研究

根据当前时态数据模型的理论,为儿童保健管理信息系统建立了一个可行的时态关系模型,并对系统中的查询做了简单的描述,最后分析了这种建模方法的优缺点.     

A Brief Discussion on Streaming Teaching for Non-English Majors in Vocational & Technological Colleges

Streaming teaching is adopted gradually for non-English majors in some vocational & technological colleges,and in this thesis the advantages and problems of the method are discussed according to the teaching practice.Furthermore,as a consideration of the streaming teaching,much more progress is expected to be made in the future English teaching with the help of the thesis.     

A Digital Right Management Model for Distribution of Digital Audiovisual Content

0 IntroductionDue to the success of Internet technology and the emer-gence of wide band network,downloading encoded dig-ital audiovisual content files via HTTP,FTP,etc ,had gainedfavor amongInternet users because of thei mmediate access todesired content . Digital Right Management (DRM) system,can satisfy the content provider by encrypting digital audiovi-sual content andli miting access to onlythose people who haveacquired a proper license to play backthe content[1].DRMas defined bythe …     

考虑调整成本的Jorgenson投资模型

本文将资本存量的调整成本引入到Jorgenson投资模型，以说明资本存量是如何调整达到最优资本存量的问题。