系统信息

Because the information in groupware system has Characteristic of complex, various, large quantity, non-structure or structure complex, close relativity of information, etc, and the traditional relational database can hardly handle these complex and various information. This paper aims at the problems that groupware system meets in application, put forward the research on groupware system based on object-oriented database management system.

由于群件系统中所处理的信息具有复杂、多样、量大、非结构化或结构复杂以及信息间的相关性紧密等特征，而传统的关系型数据库很难处理这些复杂多样的信息，因此，本文针对群件系统对数据库的应用需求，提出了基于面向对象数据库管理系统的群件系统的研究。

Besides, in general, accounting study regards ERP announcement as strategic orientation, while this paper would like to highlight the significance of non-financial information from ERP, and enhance the effeteness of accounting information. This study also assists corporations to review the efficiency of ERP before introducing, and meanwhile encourages enterprises to implement e-business. During the research, we realized that the model has the following constraints: 1. Sampling.

本论文希望能对学术界与企业界有所贡献，对于学术界而言，相关研究成果能有助于将信息科技投资的绩效评估研究触角加以延伸；另外，会计研究视ERP系统导入宣告为一种策略性导向，研究结果亦可同时强调在外部财务报表上揭露EPP系统等非财务性信息的重要性，藉以提升财务会计信息的有用性；对于企业而言，可以重新检视本身ERP系统成效，亦可提供企业在导入ERP系统前的决策参考，激励企业及早进行企业E化。

Translated Description: Digital Signage Network in China is about the Digital Signage (digital signage, multimedia information distribution system) and professional research analysts, is the number signs, multimedia information distribution system, information display systems, digital signage, electronic bulletin board system,...

Description：中国数字标牌网是关于数字标牌（digital signage，多媒体信息发布系统）的专业研究分析机构，是数字标牌，多媒体信息发布系统，信息显示系统，数字告示，电子公告系统，。。。

It proceeds from real work,according to the enterprise cost recovery issues of the shopping mall,electronic store,trade market.

本文以市场的物业管理信息系统开发为背景，从实际工作出发，针对在大型商场、电子商城、交易市场等大型企业的物业管理中存在的费用收缴问题，结合管理信息系统开发的概念、结构及系统开发的基本原理和方法，开发了一套综合的市场管理信息系统。

The results are the information transmission capacity of communications essentially lies on information carrier and information transmission mode,and on nowadays communication modes the information carries only by use of the space degree of freedom of signals and the information transmits only by use of the undulatory property of signals.

研究结果表明，通信系统的信息传输能力由信号承载和传输信息的方式决定；现有电子通信系统中信号处于低速宏观态，仅利用空间自由度承载信息和波动性传输信息，香农公式定量描述了该状态中信号的信息输运能力；高速态、微观态或介观态信号的信息输运能力有可能突破香农公式限制。

A system and method of information dissemination that permits the user to listen to the specific content of information when and where he or she wants to. A radio or television receiver system receives information from an FM subcarrier, a television vertical blanking interval transmission, an active picture area television transmission, a television separate audio program transmission or a dedicated radio channel and stores the transmitted information in a memory. A user interface allows selection from the memory of the stored information via a set of menus controlling a hierarchical database, so as to access particular items of the information.

一种信息传播的系统及方法，当他或她希望的时候及场合，允许用户，收听具体的信息内容，射频电视接收机系统从FM副载波、电视垂直消隐间隔发送、活动图象区电视发送、电视分离音频节目发送或专用无线电频道接收信息，并将所发送的信息存储在一个存储器中，用户接口通过一组控制分级数据库的菜单实现从存储器中对存储的信息的选择，以存取专项信息。

This thesis deeply researches the J2EE security strategy on the application tier of enterprise system. The security strategy predigests the information security model and meets the security requirements expediently. But there are some disadvantages when the security requirements become more complex. The expositive security on the Web-Tier can not offer more information for authentication; there is no authentication for EJB-Tier to use, make the EJB-Tier depend on the Web-Tier; J2EE uses database or application server to manage the role information. Use database to manage the role information will increase the complex of enterprise application, and the way of application server will reduce the ability of migrate other J2EE platform. To solve these problems, the thesis designs an improved security strategy model.

本文从企业级系统应用层安全的角度出发，深入研究J2EE多层体系结构的安全策略模型。J2EE提供的安全策略简化了系统的信息安全模型，能够很方便地满足基于J2EE的分布式应用系统的安全需求，但是在面对更加复杂的安全需求时，J2EE安全策略在验证授权和角色管理中还存在不足之处：其在Web层的声明式验证机制无法为用户提供更多验证信息，可扩展性较差；在EJB层缺少业务逻辑层可供采用的验证机制，而是借助于Web层的验证机制，其耦合程度较高有悖于业务逻辑分离于表现逻辑的原则；在角色管理方面，J2EE采用数据库或者应用服务器来管理角色信息，其中，数据库管理角色的方式增加了应用开发的复杂度，应用服务器管理角色降低了系统的可移植性，两者都具有片面性。

In this thesis's opinion, EIN and its application system is a complex system, its establishment must use the method of systems engineering. On the other hand, as a key subsystem of enterprise, EIN is related with other subsystem cheek by jowl, especially with enterprise management. Its establishment must be supported with the reform of enterprise management.

本文认为，企业信息网络工程及其应用系统的实施是一项复杂的系统工程，其建设必须按系统的方法进行；并且，企业信息系统作为企业的一个关键性子系统，与企业其它系统高度关联，与企业管理高度互动，企业信息网络建设必须与企业的管理变革同步推进。

Because cryptology technology is the most important method to insure information against filched, next this thesis introduces development status of cryptology theory and some traditional cryptology.

首先本文介绍了计算机信息安全系统的脆弱性，针对计算机信息系统存在的不安全因素，论述计算机安全系统的管理措施和安全等级划分标准，并以此作为信息安全系统的设计准则。

The thesis outspreads a systematic and ever in-depth exploring research work on some core problems such as how to sum up system reliability from all parts information of system reliability, how to quantify the parts information and how to make the most use of the parts information considering the parts information in the type of engineering reliability analysis and reliability tests samples.

本文围绕着如何能够充分利用和量化系统各层次可靠性信息，特别是工程可靠性分析信息，也包括可靠性试验信息，以及如何逐级向上综合出系统可靠度等核心问题，对'小子样'下的系统可靠性评估方法展开了系统全面、层层深入的研究探索工作。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。