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Keywords: The theory of evidence, generalized evidence theory, upper probability,lower probability, Dempsters rule of condition

利用这个关系，本文推广了上、下概率的概念，并用其解释了Guan和Bell提出的广义证据理论，同时还证明了Guan和Bell定义的条件信任函数，实际上是Dempster条件规则的推广。

At first This paper formulates the necessity for depurating network information content,and introduces the history of information security and study point in information security.Also this paper analyses in detail the key technology of content filtering such as data frame capture,bridge, network protocol analysis and content analysis.And then this paper comes up with the solution for content filtering facing application layer which is based on the technology of protocol analysis and format conversion in combination with text filtering techonology of Multiple Patterns Matching..Also this paper amplifies on the design and the implement method of each module.Finally this paper introduces how the client of content filtering system manages the keywords and log and makes suggestion for the improvement of the system.

本文首先阐述了对网络信息内容净化的必要性，介绍了信息安全的发展过程以及当前信息安全方面的研究重点，详细分析了内容过滤的关键技术，如数据帧捕获、网桥、网络协议分析和内容分析等方面的技术，然后提出了在Windows2000下实现基于协议分析技术，结合多模式匹配的文本过滤技术，面向应用层的内容过滤解决方案，并给出了内容过滤引擎的详细设计以及各个模块的实现方法，最后介绍了内容过滤系统客户端对有害信息关键词和日志的管理以及对本系统改进的一些建议。

Using hidden text (hidden links and keywords on a Web page can be hidden divs, valuable sources trick or white text) are white.

网页上使用隐藏文本（隐藏链接和关键字都可以隐藏div的，有价值的来源欺骗或白色文字）是白人。

DATA SOURCES: An online search of National Center for Biotechnology Information, Entrez Pubmed, and the web sites of http://www.ninds.nih.gov/health_and_medical/pubs/post-polio.html, http://www.post-polio.org/ipn/pnn11-4d.html and China Journal Net was undertaken to identify articles about post-polio syndrome published from January 1998 to February 2005 by using the keywords of＂sport, post-polio syndrome＂.

资料来源：通过计算机检索NCBI，Entrez，Pubmed，http：／／www.ninds.nih.gov／heahhand_medical／pubs／post-polio.html，Nov.10.2004，http：／／www.post-polio.org／ipn／pnn11-4d.html。和中国期刊网1998—01／2005—02期间关于小儿麻痹后遗症的相关研究文献，检索词&运动&，&小儿麻痹后遗症（Post—Polio Syndrome）&。

Keywords: Eukaryote; Gene structure prediction; Gene function prediction; Information fusion; Knowledge discovery

中文关键词：真核生物；基因结构预测；基因功能预测；信息融合；知识发现

Keywords Gas-solid two-phase flow;Pneumatic conveying;High temperature pipe expansion system;Numerical simulation;Structural optimization

气固两相流；气力输送；高温管式膨胀系统；数值模拟；结构优化

Keywords vitrified bond;Na2O;diamond grinding wheel;expansion coefficient;refractoriness

陶瓷结合剂； Na2O；金刚石砂轮；膨胀系数；耐火度

Keywords: gas explosion ,flame ,explosion wave

中文关键词：瓦斯爆炸，火焰，爆炸波

Keywords: Photonic crystals; Photonic band gap; FDTD; colloidal microspheres; face-centered cubic.

中文关键词：光子晶体；光子带隙； FDTD法；微球粒度；面心立方。

Keywords xanthan gum;fermentation;thermal stability;thermogravimetry

黄原胶；发酵；热稳定性；热重分析

Methods Clinical data of 3 cases of bile duct injury during laparoscopic cholecystectomy were analyzed retrospectively.

回顾总结3例LC术中胆管损伤的临床资料，分析3例胆管损伤的原因及对策。

These techniques are applied to the gobang.

本文将这些技术用于五子棋中。