主流

With the improvement of Internet Bandwidth and the development of Video-Compact technology, Digital Video Monitor products become the mainstream.

随着Internet带宽的不断增长和视频压缩技术的日趋完善，数字视频监控产品逐渐成为了市场的主流。

This paper generalizes the capability and the feature of the main three types of products in current digital video recorder market,and makes detailed analysis and comparison for these products.

文章综述了目前数字录像机市场三大主流产品的性能、特点，并对这几种产品加以详细分析和比较。

CBFEC emphasizes direct correspondence of concepts in EC with its software architecture for ease of understanding and using; minimal coupling with specific problem structure for easy adaptation it to solve a large number of wholly different problems; interface-centered design for extendibility. To achieve those objects, the problem-solving method of EC is analyzed and the problem-solving procedure of EC is divided into three interactive aspects: population-based stochastic searching mechanism, problem specific information to implicitly guide the stochastic searching, and the observation and control of the computation procedure of EC. Then the key concepts of EC are identified in those three aspects; the normal implementations of those concepts are summarized; the interfaces represents those concepts in software are abstracted; the collaborations of components through those interfaces are designed. CBFEC is implemented on mainstream component software platform COM/DCOM (Component Object Model/Distributed COM from Microsoft), which includes interfaces definitions, commonly using EC components implemented those interfaces, such as Simply EA component, Steady State EA component, EA component, EA component, Population component, Tournament Selection component, Linear Ranking Selection component, Nonlinear Ranking Selection component, Random Number Generator component, etc, and the collaborations of those components through those interfaces.

具体的做法是把演化计算看作是基于组件的软件工程的一个应用领域：首先分析了演化计算求解问题的一般思路和方法，把演化计算问题求解过程分为："设计基于群体的随机搜索机制"、"研究问题的性质并以此隐含地定义算法的搜索方向"和"求解过程的观察与控制"三个部分；然后分别找出各个部分中的关键概念，总结这些概念现有的一般实现方法，抽取其本质，以此结合设计模式来定义组件软件的接口；通过分析演化计算各个概念之间的相互联系来设计组件软件间通过接口的进行交互的方式；最后还在目前一种主流组件软件开发平台COM／DCOM（微软提出的组件对象模型）的基础上实现了常用的演化计算组件，如简单演化算法组件、稳态演化算法组件、演化算法组件、演化算法组件、种群组件、锦标赛选择策略组件、线性排名选择策略组件、非线性排名选择策略组件、随机数发生器组件等等。

Mainstream view is that genetic and environmentalfactor result in the disbalance of central nervous and intestinal plexus,and then lead to abnormality of gastrointestinal motility and visceral sense,which ultimately cause symptoms.

主流观点认为是由于遗传和环境等因素造成中枢神经和肠神经丛的调节失衡，从而导致胃肠动力和内脏感觉异常，引起症状。

The custom of the day was not due to a lack of paper for printing name cards, or any intended discourtesy, but because the prevailing ideology at the time saw doing business, and especially foreign trade business, as a necessary evil rather than an activity to be enthusiastically embraced.

当年的这种习惯，并非由于缺少打印名片的纸张或是故意不礼貌，而是由于当时的主流意识形态仍把做生意尤其是对外贸易视为一种免不了的邪恶，而不是一种受到热烈欢迎的活动。

This is an alternative therapy that can safely and discreetly provide the treatment they need to function in mainstream society.

" "这是一个另类疗法可以安全和慎重提供的待遇，他们需要的功能在主流社会。

Fully depending on the math, modern mainstream economists have a suit of unitive linguistic system and the common discourse foundation. And based on such an artificial linguistic system, economic discursion and analysis show more logically precious and accurate advantages than natural language.

充分依赖于数学这样一种符号化的诉求，现代主流经济学家不仅拥有了一套统一的语言体系及共同的话语基础，而且借助于这样一种人工语言系统，又使得经济学的推理与分析过程呈现了比自然语言更具逻辑严谨性和精确性的优势。

It shows how officials and the mainstream media began a disinformation campaign within hours of her death.

它显示了如何官员和主流媒体开始造谣运动后数小时内，她的死因。

He makes disquieting reading, but you won't find him in the mainstream.

他使令人不安的读，但你不会找到他在主流。

However, keywords can only represent the simple content, which easily dissever the relevancy of the content The deep-content representation and application are not developed, so semantic navigation is not satisfied at present. Time mechanism is a kind of navigation mechanisms that uses time for the signpost, and determines navigation route according to the time of occurrence.

时序机制指以时间为导航路标、根据事物发生的时间顺序确定访问路径的一种导航机制，主要应用于WWW信息空间中以时问顺序为线索组织信息的结构中；空间机制指依据对象间的空间关联，为用户指引路径，提供导航路标的机制，应用于具有空间特征的结构中；社会机制指利用先行者的经验、建议为后来者指引路径的行为，原来主要应用在推荐系统、协作系统中，目前已经在主流的信息检索系统中得到了应用，如在CNKl知识网络服务平台（CNS 5.0）中的应用。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。