8253定时/计数器方式3计数过程的实验研究

对于我系选用教材和部分参考资料关于8253定时/计数器在方式3的计数过程中表述中所存在的矛盾之处,基于武汉众友电子科技有限公司的接口实验台,提出了一个探究8253计数过程的实验方案。通过分析实验结果,指出了正确的计数过程。     

Three dimensional couette flow and heat transfer through a porous medium with variable permeability

This paper reports research on the effects of variations in injection velocity and permeability on the heat transfer and flow through a highly porous medium between two horizontal parallel plates situated at constant distance with constant suction by the upper plate. Due to this type of variation in injection velocity and in permeability the flow becomes three dimensional. The governing equations are solved by adopting complex variable notations to obtain the expressions for the velocity and temperature field. The skin-friction along the main flow direction and rate of heat transfer are discussed with the help of graphs.     

美国教师专业化的原因分析

20世纪80年代美国提出了教师专业化口号,其原因是多方面的,如经济的衰落引发的教育和人才反思、科学教学的兴起等,但主要还是起因于教师职前教育不到位、聘用要求不严以及职后培训质量不高所造成的教师专业水平低等。     

Consolidation behavior of cement- and lime/cement-mixed column foundations

The consolidation behavior of mixed in place cement- and lime/cement-mixed column was studied. Consolidation of the composite foundation was modeled as a three-dimensional axi-symmetric problem. The authors used the finite difference method to obtain the pore pressure variation with time at any location below the surface. A computer program developed by the authors was used to draw some interesting conclusions about the consolidation behaviors of cement- and lime/cement-mixed pile foundation. Finally, a combined model including the permeability coefficients of cement-mixed piles and soil, was studied and its feasibility was evaluated. Project supported by National Natural Science Foundation of China (No. 59908012) and Education Ministry of China     

CeO2载体对Au/CeO2催化剂CO氧化活性的影响

采用六水硝酸铈和氢氧化钠为反应物,用水熟合成法制备了纳米Ce02.并以不同合成条件下得到的CeO2为栽体,担载了相同含量的贵金属Au,制备了具有高活性的Au/CeO2催化荆.实验结果发现,以CeO1-2h为载体的催化剂在高温区易展现出较好的活性,而以CeO2-10h为载体的催化剂在低温区易展现出较好的活性.说明载体结构对催化荆的CO催化氧化活性有决定性的作用.     

论高校思想政治教育网络平台的建设

随着信息技术的高速发展特别是互联网的日益普及,网络已经成为大学生求知、社交、娱乐的重要途径。高校的思想政治教育要根据这些新的变化,加强在方法、手段等方面的改革与创新,不断拓展思想政治教育的新领域,打造高校思想政治教育的网络平台,整合校内网络资源,使之形成合力,充分发挥高校思想政治教育网络平台的功能和作用,抢占思想政治教育的新阵地。     

Misperceptions of Chinese People about North American Culture

Cultural knowledge has some influence on successful inter-cultural communication.In order to help Chinese people communicate well with foreigners,this paper discusses some misperceptions of Chinese people about North American culture based on the data collected from several Chinese and American participants.And MK.Mayer’s model of basic values and Kluckhohn-Strodtotbeck’s model are adopted to analyze the reasons why Chinese people have such misperceptions.Based on the findings,three suggestions are provided to help Chinese to overcome some misperceptions with the hope that they can conduct a good communication with foreigners.     

The American Dream in American Movies

All the Americans cherish a beautiful myth in their hearts,which is called The American Dream.And in nowadays movies play a more and more important role in the American culture,as well as being a reflection of the American culture.The paper discussed this theme through explaining the four well-known American movies:The Great Gatsby,Foreest Gum,Born On The Fourth Of July And American Beauty.     

Analysis on Chinese/English Code-Switching in Computer-Mediated Communication Based on Meme Theory

Nowadays,computer-mediated communication(CMC) becomes one of the most convenient ways for people to connect with each other in which Chinese/English code-switching has been frequently used and widely spread.The article will memeticly interpret this language phenomenon based on the authentic examples collected from various kinds of CMC,and point out that the Chinese/English code-switching in CMC is a kind of strong memeplex which includes many different strong memes,resulting in the popularity of Chinese/English code-switching in CMC.     

An Analysis of Foreign Language Learning Styles from the Cognitive Perspective

From the 1970s,learning styles began to enter the domain of foreign language learning researches.Foreign language learning style is often regarded as a significant factor attributing to individual differences among language learners.Nowadays,many researchers begin studying individual learners’characteristics and exploring how different learners interact with external factors from cognitive perspective.The field-independence/dependence construct became a focus.Based on previous studies,the paper is committed to analyzing the nature of FID learners.It is expected that this research can establish a well-grounded basis for following studies.