实时多媒体数据传输的研究及实现     

董芳  吴秀  费新元 《黔南民族师范学院学报》2003,23(3):1-4

本文主要进行RTP／RTCP与TCP协议的比较，着重分析RTP／RTCP协议对分组网上视频业务Qos的保证。在IP电话的实现中编码后的数据流采用RTP／RTCP协议来打包传送。结果表明，开发出的软件实时性好。  相似文献   

8253定时/计数器方式3计数过程的实验研究     

姜华  燕凤灵 《楚雄师范学院学报》2007,22(9):26-29

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。  相似文献   

如何言之有"物"--分析哲学与后现代主义比较     

陈道远 《乐山师范学院学报》2002,17(1):4-8

弗雷格、罗素、早期维特根斯坦所提出的指称理论以及后期维特根斯坦的“生活形式” ,说明了分析哲学具有一种实在的、“物”的认识的基础 ,后现代主义则使语言与物的界限消解了。但从逻辑上看 ,这种基础也是后现代主义得以存在的基础和发展的动力 ,同时也是它所要超越的对象  相似文献   

创建学习型企业应解决的几个问题     

杨勇  赵文奎 《运城学院学报》2004,22(1):80-82

创建学习型企业，首先要求企业必须认识学习对其生存和发展的重要意义．促成包括决策层、管理层和操作层在内的全员学习，并做好即时学习与终身学习、形式学习与实质学习、灌输学习与讨论学习、内部学习与外部学习等方面的结合。  相似文献   

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

Chaudhary?R.?C.?Email author  Sharma?Pawan?Kumar 《浙江大学学报(A卷英文版)》2003,4(2):181-185

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.  相似文献   

Consolidation behavior of cement- and lime/cement-mixed column foundations   总被引：1，自引：1，他引：1  

蔡袁强  徐长节 《浙江大学学报(A卷英文版)》2002,3(5):507-512

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  相似文献   

CeO2载体对Au/CeO2催化剂CO氧化活性的影响     

单文娟  刘畅 《华章》2011,(3)

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.  相似文献   

论高校思想政治教育网络平台的建设     

曾杰  周菁 《遵义师范学院学报》2011,13(1):109-110,113

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。  相似文献   

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

张淳  石娟丽 《海外英语》2011,(7):11-14

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.  相似文献   

An Analysis of Foreign Language Learning Styles from the Cognitive Perspective     

王欣 《海外英语》2011,(11):67-68

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.  相似文献