Ad Hoc网络AODV路由选择协议的改进

在移动Ad Hoc网络环境中，链路失效和路由改变的事件经常发生．TCP应用在这样的环境中性能是低下的，因为它总是认为数据包的丢失是由于网络拥塞造成的．提出一种改进的AODV路由协议（E-AODV），此协议在选路时会选择一条稳定的路径，进而提高TCP的吞吐量．仿真结果表明E-AODV协议是有效的．     

Effect of Mixed Solvents and Additives on the Habit Modification of 6-APA Crystals

6-aminopenicillanic acid (6-APA) crystals obtained under different physical and chemical conditions of the solutions may present different habits. The habits of diamond-shaped plates are desirable compared with other habits of 6-APA crystals. To obtain ideal 6-APA crystals, the effects of the mixed solvents and additives on 6-APA crystal habits were investigated. Ethanol or acetone was used as the organic solvent, and impurities existing in the ,6-APA purification process were used as the additives. 6-APA growth habits were changed when the concentrations of ethanol, acetone or phenyl acetic acid were increased to exceed their critical concentration. The observed results show that the dominant face on 6-APA crystals was identified to be , {020}, but the overall habit was controlled by the relative growth rates of the : 101 and {002} faces. Crystal growth rates and habits can be appreciably changed by specific adsorption of additives on crystal faces. In some cases solvent molecules can act in a similar way and may be regarded as bulk additives. The effects of additives and organic solvents on 6-APA crystal habits were the results of adsorption effect,which fitted the experimental results quite well.     

第三届深圳少儿美术论坛全国少儿美术教育交流会通知

小女丫茹，今年4岁有余，活泼可爱，见到班里小朋友有了什么新鲜的玩意儿，或者见到自己喜欢的零食、玩具，也总想买回家。我呢，认为该买的买，不该买的坚决不买。女儿倒也乖巧，不再缠着我要。正当我暗自窃喜教女有方时，却发现家里的玩具、图书有增无减，桌上也堆放着许多刚开袋的零食。原来，女儿见在我这里达不到目的，就转向了她爸爸。[第一段]     

基于OpenPLC的医疗仪器通信协议转换平台设计

医疗仪器信息集成已成为医疗卫生信息化不可或缺的一环。由于非影像类医疗仪器信息传输标准滞后,使这类医疗仪器信息集成发展较为缓慢。通过分析多种通信协议,利用图形化编程优势,基于OpenPLC设计实现了一种医疗仪器通信协议转换软件的组件化设计平台。使用模块拼接完成医疗仪器数据帧协议转换配置,在保证协议转换通用性、易用性的同时,降低了使用人员的技术门槛。     

移动IPv6原理及其安全性分析

本文首先介绍了移动IPv6的工作原理,然后分析了在IPv6网络中引入移动IP协议可能给网络带来的安全隐患,并讨论了移动IPv6所采用的安全技术。     

解释学与认知科学

哲学解释学——被理解为解释的理论——所研究的一些问题，也是认知科学要回答的。人的理解的性质、我们获取和组织知识的方式、语言和记忆在其中所起的作用、意识和无意识知识的关系、以及我们如何理解他人等，对这些问题的回答，可以构建起解释学和认知科学之间的交叉平台。尽管解释学绝大多数时候和自然科学是相对的，但它们之间也有一些明显的通路，使得解释学可以有助于认知科学，反之亦然。     

Join Hands in Developing Accelerator Mass Spectrometry

The signing ceremony for a protocol to jointly develop the Xi‘an Center for Accelerator Mass Spectrometry was held on July 5 at Xi‘an Jiaotong University in Xi‘an, capital of northwest China‘s Shaanxi Province. Representatives from CAS, Ministry of Science and Technology(MOST) and Ministry of Education (MOE) put their names on the framework agreement for cooperation on behalf of their respective agencies     

试论仲裁协议的法律效力

仲裁协议是指当事人各方同意将在他们之间确定的不论是契约或非契约性的法律关系上已经发生或可能发生的一切或某些争议提交仲裁的协议。下面将围绕仲裁协议的纵向展开，具体论述了三个方面：一、仲裁协议的表现形式及其内容；二、有效仲裁协议的构成条件；三、仲裁协议效力的确认。     

中国研制出世界首台无线路由器

我国首台拥有自主知识产权、技术性能达到世界先进水平的高性能IPV6无线路由器，近日在京通过了教育部组织的鉴定。