过渡时期高职院校图书馆应解决的几个问题

本文就高等职业技术院校图书馆在过渡时期存在的有关问题进行探讨,并提出相应的整改措施和方法。     

新时期农村职业教育改革的思考

加入WTO后，我国农业将与世界的联系更加紧密，市场竞争将由国内竞争转向国内，国际竞争，农业资源配置也将由国内配置转向国内国际双重配置，在这种新形势和发展阶段，我国农村职业教育要进一步明确农村职业教育的发展定位，及时调整专业结构，积极开展课程体系和教学内容改革，开放农村职业培训和继续教育，努力改善办学条件，提高教育质量。     

论新民主主义时期人民民主法制建设

新民主主义时期的人民民主法制建设有其产生、形成、发展的过程,其内容涉及政治、经济、军事、文化、教育等方面。尽管其在内容上有暂时性、地方性和形式上的不完备,但在当时却起着非常重要的作用。     

一种三维数值方法及其应用分析

为了提高包含有交界面的三维复杂流动问题的求解精度，将二维坐标系中的Youngs算法公式推广到三维坐标系应用，根据流体体积分数的定义，在二维直角坐标系Youngs算法的基础上，把介质分界面近似为平面，通过引入修正系数，实现了Youngs算法在三维坐标系中的应用，给出计算方法，并编写程序进行算例验证，数值模拟了具有复杂边界的空中爆炸形成冲击波的形成和传播过程，通过数值试验，证明了Youngs算法在三维坐标系中成功的应用．     

CILT2000: Visualization and Modeling

CILT2000 helped VisMod evolve from a collection of local and distinct research and development efforts into a solid field of education. Previous intellectual efforts focused around a) modeling and simulation tools, b) visual explanation tools, c) visual data analysis tools, d) exploring student needs in the context of VisMod, and e) exploring instructional frameworks for VisMod. These focus areas have evolved in two main trajectories, representing the evolution of the field, the generalization trend, which seeks to identify general principles and guidelines for designing learning environments, and the equitable application trend, seeking to use knowledge gained in the field to leverage education in general.     

口腔仿真模拟系统及其在临床前教学中的应用

介绍口腔仿真模拟系统的主要构成以及功能特点。在口腔临床前教学中应用此系统不但能够增强学生的学习积极性、巩固基础理论知识,而且能够提高临床操作技能,值得进一步在口腔教学中推广应用。     

试析沦陷初期江苏地区各阶层心态

沦陷时期江苏地区各阶层在大敌当头时的心理和行为:战争初期,社会混乱,国民政府官员弃民而逃;土匪、地痞流氓则浑水摸鱼,大肆抢劫;普通民众则处于高度恐慌状态,为躲战乱,流离失所;城镇地区则有地方头面人物(地方耆老、商会会长等)联系日军,或者迫于后者的压力,出面组成维持会,稳定秩序。     

论吴宓留学前的文化经历与其文化取向的关系

吴宓家族与近世三原大儒刘古愚关系密切。在清华求学近6年，吴宓与汤用彤、吴芳吉成为志同道合的好友，而且饶麓樵、J．Pickett等老师对他的诗歌赏鉴观和文化价值观倾向都有一定影响。同时，对儒家原典的熟读精思和对卡莱尔、爱默生、华兹华斯等人著述的阅读，也为他文化保守主义价值观的形成埋下了伏笔。分析吴宓当时的言论可知，是赴关留学以前的本土微观文化环境和经历促使吴宓主动选择了拜白壁德为师，并进而成为著名的文化保守主义者。     

新时期高校校办秘书应具备的素质

新时期对高校校办秘书素质提出了更高要求。本文认为 ,作为新时期高校校办秘书 ,应具备三方面素质———良好的政治素质、良好的业务素质和良好的心理素质     

Numerical investigation of cavitating flow behind the cone of a poppet valve in water hydraulic system

Computational Fluid Dynamics (CFD) simulations of cavitating flow through water hydraulic poppet valves were performed using advanced RNGk-epsilon turbulence model. The flow was turbulent, incompressible and unsteady, for Reynolds numbers greater than 43000. The working fluid was water, and the structure of the valve was simplified as a two dimensional axisymmetric geometrical model. Flow field visualization was numerically achieved. The effects of inlet velocity, outlet pressure, opening size as well as poppet angle on cavitation intensity in the poppet valve were numerically investigated. Experimental flow visualization was conducted to capture cavitation images near the orifice in the poppet valve with 30° poppet angle using high speed video camera. The binary cavitating flow field distribution obtained from digital processing of the original cavitation image showed a good agreement with the numerical result. Project supported by the National Natural Science Foundation of China (No. 59835160) and Scientific Research Foundation for Returned Overseas Chinese Scholars, State Education Ministry of China (No. 50175097)