扩展性

The paper mainly concerns about:(1)Proposing the idea of completing the job using GIS software by discussing deficiency of the traditional transportation job;(2)Discussing the transportation plan algorithm and the flow, in this foundation, designing the transportation model programming realization flow chart;(3)With the comparison of the domestic and foreign GIS software platform, determining ArcGIS Desktop which has large drawing edit and spatial analyse functions as the development platform of transportation planning;(4)In the data organization and the database establishment, by using the recent object-oriented spatial data— Geodatabase and UML, completing the system database design and establishment, including spatial database, attribute database as well as transportation network database

详细研究内容如下：(1)论述了传统交通规划软件存在问题，提出了利用GIS平台开发交通规划系统的基本思想；(2)论述了交通规划的算法和流程，在此基础上，设计了交通模型编程实现的流程图；(3)通过比较国内外GIS软件平台，选定了具有强大图形编辑和空间分析功能的ArcGIS桌面版为交通规划系统的开发平台；(4)在数据的组织和数据库的建立上使用新的面向对象的空间数据—Geodatabase，并利用统一建模语言UML完成了系统数据库的设计与建立，包括空间数据库，属性数据库以及交通网络数据库；(5)论述了系统编程实现的基本方法，在ArcMap下采用VBA编程方法自由地定制了系统界面；(6)利用ADO Data和数据网格控件存取交通规划系统预测功能所需的数据库；(7)采用VB对ArcObject控件扩展开发方式，实现系统功能的开发，即利用COM技术的扩展性在VB中创建ActiveX动态链接库来实现特定的系统功能，并集成在ArcMap中运行；(8)系统完成了交通发生预测、交通分布、缓冲区分析、道路的网络分析、公交

The largest limitation in traditional data-dictionary design pattern in Information systems is short of extensibility, and it is unadapted for the acceptance of new information resources.

传统的信息模型中数据字典的构建模式存在的最大问题，就是不具备可扩展性，无法接纳新资源信息的加入。

The development of modern data acquisition teachnology is very quick, many data acqu- isition systems which adopt ISA or PCI technique are quite mature, but they have some defects such as complex, expensive, unexpanded, electromagnetism disturb etc.

现代数据采集技术发展迅速，各种基于ISA、PCI等总线的数据采集系统已经相当成熟，但这些采集系统存在安装麻烦、受计算机插槽数量、地址、中断资源的限制、可扩展性差等缺陷。

This paper adds extensible accidence database and syntax database in the PDP,and policy transformation is performed through universal agent program in the PEP,which supports the extension of different devices and types in the system.

该文通过在策略决策点增加可扩展的词法库和语法库，在策略执行点采用通用代理程序进行策略翻译，支持系统内不同设备及类型的动态扩展，为不同类型的安全设备的策略翻译提供了一种新方法，提高了策略管理的可扩展性和通用性。

Although scalability had been considered in existing systems when they were designed, their implements still relied on specific systems, so the universalness of systems still need to be improved.

现有的信息交互和协议尽管在设计时都考虑了系统的扩展性，但仍然在实现方式上存在着对特定系统的依赖性，因而在通用性上仍有待改进。

For the complexity of Trend component in industry control software,this paper presents a trend OCX based on Visual Basic which realized powerable function,has good universalness,extendibility,real time capability,easy to use and can be mebedded into the software.

针对工控软件趋势图制作比较复杂的特点，开发了基于VB的趋势图控件，该控件不仅功能强大，而且具有高通用性、易用性、可扩展性和实时性，可以方便地嵌入到工控软件中。

The holistic design of the system and resolved the designs of software and hardware based on VXI bus are put forward according to the demand of test system. The hardware and software is designed, including the formation and design of hardware system, visual instrument software architecture, program design for instrument driver, high speed real-time data collection. In the dynamic test program, the idea of"software is instrument"was applied to meet the diverse test demands. Last, it is proposed that the VXI test system be developed to more totalization and networked. The basic theory of system identification was introduced briefly at first. The principle of spectrum analysis system identification based on Wiener-Hopf equation was expatiated. and the questions in applying Peusdo Random signal as spectrum analysis methods stimulate signal was studied, The generation principle of the peusdo random signal is researched, the characteristic of peusdo random are analyzed from time domain and frequency domain, the inverse repeat peusdo random signal is brought forward to make up the shortage of ordinary peusdo random signal. And a new chaos genetic algorithmis presented to solve the unprecise problem of the traditional method. In the servo valve dynamic characteristic test system, the spectrum analysis methods was applied successfully, the servo valve dynamic characteristic could be acquired rapidly and exactly, the test results were analyzed and the ameliorate methods were brought forward at last.

结合航天某集团液压测试中心测试系统的需求，提出了基于VXI总线的液压测试系统的整体设计方案，完成了测试系统的硬件设计与软件设计，包括硬件系统构成与设计、虚拟仪器软件结构、仪器驱动程序设计、高速同步实时数据采集等内容；以伺服阀动态特性测试为例设计了测试模块，该模块体现了VXI总线仪器软件开发所倡导的"虚拟仪器"的思想，以软件的灵活应用满足了不同的测试需求；结合自动测试系统的发展，研究了VXI测试系统与网络技术结合，实现各种软硬件资源共享，进一步提高设备及数据的利用率和系统的扩展性，使自动测试向综合化、网络化方向发展；研究了伪随机信号作为谱分析法辨识的激励信号时存在的问题，讨论了伪随机信号的产生机理，从频域和时域分析了伪随机信号的性质及其应用，提出了用逆重复伪随机信号弥补了普通伪随机信号的不足，并以混沌遗传算法对逆重复伪随机信号产生过程中的参数进行优化，可以更合理而不是凭经验产生需要的逆重复伪随机信号。

This desktop-centric approach is considered to be non-scalable, untraceable, unrepeatable, unsecured and particularly difficult to audit.

这种以桌面为中心的方法被认为是非可扩展性，难以跟踪，不可重复的，不安全的和并且很难审计的。

But it is too unscalable and inflexible to expand into large-scale network environment.

传统消息中间件MOM虽具有松耦合和异步传输特性，但大多适用于企业内部集成，且其扩展性和灵活性不足，难以拓展到大规模网络环境。

Ask for help the ASP WEB the application the procedure, the customer passes the Browser software conjunction backstage database and complete to do the operation, on the B/ the mode of S net shopping system, the data supports the convenient customer carries to have no to need the appropriative software, having the good network expand the sex, supporting the TCP/ the IP agreement connects into the Internet directly, at the same time for B/ the mode of S but speech, the procedure have been no longer so important with the physics position of the data, the visitant concern just their URL all right.

借助 ASP 的 WEB 应用程序，用户通过Browser 软件连接后台数据库并完成做操作， B/S模式的网上订餐系统，数据维护方便客户端无需专用的软件，有较好的网络扩展性，支持TCP/IP协议直接接入Internet，同时对于B/S模式而言，程序和数据的物理位置已经不再是那么重要了，访问者所关心的只是它们的URL就可以了。

If you are committed to an education career, then the Master of Arts in Education from Ashford University is for you.

如果你是致力于教育事业，那么，艺术教育硕士学位阿什福德大学是给你的。

objective:to explore the expression of survivin protein and its mrna in rectal cancer and their clinic significance.

目的：研究凋亡抑制因子survivin蛋白及其mrna在直肠癌组织中的表达及其与临床病理关系。