分布式系统

When construction large-scale distributional enterprise application system, J2EE occupied the giant market share.

在建设大型的分布式企业级应用系统时，J2EE占据了巨大的市场份额。

The multilayered distributional application structure based on Web is adopted in this system to form central and distributed information management pattern.

系统采用基于Web的多层分布式应用结构，形成集中与分布相结合的信息管理模式。

This paper designs a multi-screen rendering system based on distributed real-time rendering, dividual output and tiled display.

设计了一个基于分布式实时渲染、屏拼接显示的多屏渲染系统。

Limited by traditional database technology, the spatial data and attribute data were stored dividually. With the transfermation of GIS application to the Distributed Management System, concurrency control, data sharing and network communication become the new problems.

受以往数据库的限制，空间数据和属性数据是分开存储的，随着GIS应用向分布式管理系统领域的转移，在数据共享、网络通信、并发控制等方面出现了许多难以解决的问题。

Business management system is a distributed application aiming at developing strong , firmness and enlargeable application , gather every kind of technique like NT, SQL SERVER, DELPHI, MIS etc. in the integral whole, it aims to set up an application frame based on customer/ service construction, and provide the basic service for this kind of application.

企事业管理系统是针对MIS平台上开发强键、稳固、可扩充的分布式应用而推出的方案，集NT、SQL SERVER、DELPHI、MIS等各种技术于一体，它的目标是创建一个基于客户/服务结构应用框架，并为这种应用提供基本服务。

To solve this problem of keeping date consistence in the heterochronous environment, the paper puts forward a synchronous updating system model, which applied Web Service to capture, store and then transfer updated things in the homogeneous distributed database system and farther implement the system's model of data synchronization, In the design of this model, the concurrency control of distributed things and the method of failure inspection are discussed and solved successfully.

针对异构或异质环境下保持数据一致性的问题，给出一个在分布式异质数据库中，通过Web Service技术，对数据库更新事务进行捕捉、存储后转发，进而实现数据同步更新的系统模型。

Workflow Engine is the core part of Workflow Management, this paper takes E- FSM as the model, consults the standards of WfMC, divides the Engine into five functional modules, adopts Distribute Object Computing technique of EJB、JMS、JNDI, control mechanism of thread polls and queue, script interpreter technique of BeanShell, and gives the design and implementation solution of each module,make it have the more obvious advantage in the application performance,resource utiliaztion,scalability,supporting heterogenicity and distribution.

工作流引擎是工作流管理系统的核心部件，本文以扩展的有限状态机为模型，参考WfMC标准，对工作流引擎的功能划分成五个模块，并采用EJB、JMS、JNDI等J2EE分布式计算技术和线程池、队列调度机制以及BeanSehll脚本解释技术等，给出了各个模块的设计和实现方案，使其在应用性能、资源利用率、可靠性、支持异构和分布性等方面均有较明显的优势。关键词扩展的有限状态机 EJB JMS 工作流引擎，线程池队列

The distributed control architecture for elevator is presented. The control system is divided into several function modules which are controlled by different controller modules, so the efficiency is improved, the hoistway lines are reduced, and it is easy for people to expand and repair the control system.

采用最新的DSP芯片TMS320F240和MCS51单片机，结合分布式控制理论，将整个电梯的控制功能分为若干模块，分别由不同的控制器来实现，提高了系统效率，减少了井道布线，易于扩展和检修。

Under the development of the computer and the network technology, establishing a distribution hydrologic measure system of long-distance control become possible.

在计算机及网络技术飞速发展的今天，建立一个分布式的，远距离控制，水文测量系统已成为可能。

On the basis of the bender forming characteristic analysis, this article gives necessary function of NC bender and designs distributed computer control system, which controlled the bender intellectively with one industrial computer and two PLC.

罗凯华（武夷学院，354300）摘要：在分析折弯机成形特点基础上，本文提出了数控折弯机的必备功能，设计出分布式的计算机控制系统，由一台工业控制机和两台PLC组成，实现了对折弯机的智能控制。

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。