工作平台

Considering the practice nature of platform regulation, this paper uses some city's regulation and operation for reference. Then, according to the frame of regulation, the blue print of xi'an international port park was drawn out.

物流园区信息平台的规划是实践性很强的一项工作，本文对国内相关物流信息平台的规划进行了比较，并分析了一些已投入运作的物流园区信息平台，以此作为对实际规划的经验借鉴。

The security of PKI system itself is especially emphasized during the system design and implementation process, which is in accordance with the pervasive characteristic of PKI. Second, the concept of a Trusted Key Management Center is introduced for the first time. This technology greatly strengthens key management practices and allows for smooth transition from PKI to Key Management Infrastructure . Third, certificate status mechanisms are investigated in depth, and a certificate revocation performance simulation system is devised. All these work will provide guides to practice and employment of PKI applications. Based on time constraints, a new taxonomy for authenticated dictionaries is proposed. Fourth, formal analysis of OCSP protocol is carried out; then an efficient and scalable OCSP system is developed. Fifth, the special requirements caused by the working environments of Wireless PKI are analyzed. Based on communicative hashing and dynamic Merkle hash tree, an efficient certificate status validation method suitable for WPKI is presented. Sixth, one important kind of fair exchange protocols is studied, and a new CEMBS based on RSA cryptosystem is proposed. Afterwards, a novel fair exchange protocol totally based on RSA signature scheme is devised.

在系统设计和实现的过程中，考虑到PKI作为普适性安全基础平台的特点，特别强调PKI系统自身的安全性；第二，首次在PKI系统的设计中提出了"可信密钥管理中心"的概念，这一独特设计大大地强化了密钥管理功能的实施，为PKI向密钥管理基础设施的平滑过渡提供了良好的技术准备；第三，对证书状态验证机制进行了深入研究，设计了证书状态模拟系统，以指导PKI系统和应用的部署和实施；在此基础上，基于时间约束首次给出了认证字典的一种新的分类方法；第四，对OCSP协议进行了形式化分析，设计和实现了一种高效、可扩展的OCSP系统；第五，分析了WPKI工作环境对设计安全基础平台提出的特殊要求，结合无线移动设备的具体特点，基于可交换杂凑函数和动态Merkle杂凑树设计出了一种适用于WPKI环境的高效证书状态查询机制；第六，对一类公平交换协议进行了深入的研究，从设计公平交换协议的密码基础结构出发，提出了一种新型的基于RSA密码体制的高效CEMBS；在此工作的基础上，设计了一种基于RSA密码体制的最优化公平交换协议。

In order to locate direct singular positions, we begin by expressing the determinant of the Jacobian matrix Jx in terms of position of the center P of the moving platform. The Z and the Y coordinates of P may be chosen from the workspace, then the determinant of Jx is now a six order polynomial of X, the x coordinate of P. The direct singular positions corresponding to are obtained by solving the polynomial equation, and retaining all real roots in the workspace.

由速度分析的Jacobian矩阵Jx，将其行列式值表示成活动平台中心点P位置的函数，寻找奇异位置的方法是先假设平台高度，再假设工作空间内P点的Y座标，使Jx行列式成为P点X座标的六次方程式，求解方程式并保留在工作空间内之实根。

The main problem of dynamic characters for the Spar platform is analyzed and reviewed, and the research direction is determined based on the above analysis.The main body of the Spar is simplified as an isolated, truncated and vertical floating circular cylinder.

本文主要工作和结论如下：综述了深海平台的发展现状，重点对Spar平台国内外研究进展进行了综述，分析和评述了Spar平台运动特性方面存在的主要问题，明确了本文的研究方向。

At last, we applicate the workflow system to some software, and the effect is well. We give the expectation of engine based on EPC.

最后说明了D2G平台与工作流管理在应用系统开发过程中起到的作用和收到的效果，并对D2G平台能基于EPC模型的工作流引擎的发展方向做了展望。

Develop the opinion of a few directiveness of the State Council of our the Party Central Committee and policy platform, internet is the platform that is a transmission not just, it also is the platform of a job, it can have certain effect in the society in informatization, the technology that uses Internet also can execute the superintendency of food safety, these action still do not have play far.

发挥我们党中央国务院的一些指导性的意见和政策平台，互联网不仅仅是是一个传播的平台，它也是一个工作的平台，它可以在信息化的社会中起到一定的作用，利用互联网的技术也可以实行食品安全的监管，这些作用还远远没有发挥。

Unfortunately implementation of this is reliant on the platform's collation and localisation support; this feature can not be relied upon to work portably across all platforms, or even all locales on one platform.

不幸的是这个实现依赖於平台的对照和地区支持；这个特性并不能很好地可移植工作於所有的平台，甚至一个平台上的所有区域。

Unfortunately implementation of this is reliant on the platform's collation and localisation support; this feature can not be relied upon to work portably across all platforms, or even all locales on one platform.

不幸的是这个实现依赖于平台的对照和地区支持；这个特性并不能很好地可移植工作于所有的平台，甚至一个平台上的所有区域。

The Botanical garden has the diversified floras and many kinds of ecological landscape.

植物园是进行物种迁地保护的场所，科研、科普是一个植物园的主要工作，而这些工作都是建立在一个平台之上，这个平台就是园林。

Column aluminum lift platform: three groups of mast platform supporting synchronous lifting, branch structure, with a single mast pole back platform, with a large load capacity and excellent job stability.

三立柱铝合金升降平台：三组桅柱支撑作业平台同步升降，支退结构同单桅柱式平台，具有超大的载重量和优秀的工作稳定性。

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。