查询词典 system

Firstly, the thesis introduced the development of VOD, the background and meaning of the program, then the author introduced the associated technology, mainly including the feature of multimedia, video compression technology and the protocols SCTP and RTP. Considering the ambulant of host , fluctuation of bandwidth,high error rate data in wireless networks ,the author proposed some QoS strategy in the wireless networks such as RTP/SCTP protocol stack , connection control of the server, two buffers in the client end point.,TFC congestion control algorithms ,etc. Based these strategies, the team members gives the software and hardware solution of the wireless video-on-demand system and gives the main modules design of the software system. The system adopted the C/S structure including two parts: server and client ,using the Mpeg-2 which is apporiate for networks as the supported format. The thesis emphatically researches on the video-serving module of the server and the sink module, player module of client.

本文首先介绍了视频点播系统的发展现状、课题的研究背景和意义；接着对课题的相关技术进行概述主要包括了多媒体特点，压缩技术，传输协议SCTP以及RTP；针对无线环境的节点移动性，带宽波动性，数据错误率高等三大特点，作者研究设计了无线环境下的QoS策略：RTP/SCTP协议栈，服务器准入控制机制，客户端双缓冲区，TFRC拥塞控制机制等；在这些策略的基础上设计了系统的软硬件解决方案，并对软件体系结构的主要模块进行了设计，整个视频点播系统采用C/S结构，由服务器，客户端2个部分组成，使用适合网络传输的流媒体格式Mpeg-2作为系统支持的格式，文中重点研究了服务器的视频服务模块以及客户端的接收模块和播放器模块，并利用线程池技术对系统进行实现。

On the other hand namely concerning the operation, the first is to build register system of property of every people, the second is to build single account system, the third is to astrict cash consumption, the fourth is to build economic amercement system of corruption.

从操作性方面看：一要推行全民财产登记制度；二要推行一人一个银行账户制；三要推行限额现金消费；四要建立对腐败的经济罚款制度。

The data of the pre and post reconstruction of microwave time comparison system is collected and processed. The performance of one-way time transfer of previous system, the digital channel and the analog channel of the reconstructed system are analyzed, and the performance of two-way time comparison of the analog channel and the performance of GPS CV time comparison are analyzed too.

对改造前后的微波时间比对系统和GPS共视比对系统进行数据采集、处理，分析了改造前微波时间比对系统的单向时间传递性能，改造后的数字微波时间比对系统数字通道和模拟通道的单向时间传递性能，模拟通道的双向时间比对性能及GPS共视系统的时间比对性能。

People are required to know and analyze the operating axes of rotary kiln in time in practice, in order to adjust and maintenance it in reason. So The Great Wall Aluminum Corporation of China bankrolled for studying the microcomputer real-time monitoring system of large-scale rotary kiln and commissioned Central South University to develop it.Based on analyzing and comparing the status quo of the monitoring system of rotary kiln, this paper brings forward a new method of monitoring the operating status of rotary kiln. It analyses the system-error and the configuration and demonstrate the feasibility in detail. In the design of hardware configuration it analyzes the principle and speciality of the tailor-made eddy current transducer and PCI-1713 analog input card and the multilevel supervisory network.

本论文首先在分析和比较同内外回转窑检测系统现状的基础上，首次提出了新的回转窑运行状态检测方法，并从系统误差及可行性角度进行了详细的分析和论证；其次，在监测系统硬件结构设计中，详细地分析了多级管理网络的实现，PCI-1713双缓冲区高速数据采集装置的原理、特点、工作过程，以及针对该系统恶劣的工作环境、特定性能要求而设计的特制电涡流传感器的原理、波形特性及性能特点，及为了减小非线性误差而采用计算机软件进行多段线性插补方法实现误差补偿；另外，在系统软件设计中，详细地分析了高速数据采样软件、智能信号处理软件、系统监测软件的实现，分析了采用模糊自适应滤波方法有效地滤除本系统恶劣环境下的各种干扰因素，并简要地介绍了系统分析软件的功能。

First, the thesis introduces the research background and significance of the project, and summarizes the advantages of the digital monitor system. Its pointed out that the analog monitor system is bound to be replaced by the digital one, and the key techniques in the system are referred to.

论文首先阐述了研究背景与意义，介绍了网络数字监控系统的优点，指出监控系统由模拟式转变为数字式、网络式是必然趋势，并简要提及了数字监控系统中的关键技术。

Therefore, we apply the distributed monitor and control network technology based on OMRON PLC to the mine hoist"s back-up protection control system, working-condition monitor system, analog data acquisition data processing system. And applying the HOST Link and the PLC Link communication technology, we realize the following functions, the real-time monitor and control the hoist"s running state and running speed on line, real-time dynamic display, unified management by computer.

为此我们把所研究的由OMRON公司的PLC组成的集散测控网络技术，实际应用到矿井提升机的后备保护控制系统和提升机的工况检测、模拟量的数据采集与处理系统之中，并且应用PLC网络中的HOST Link和PLC Link通信技术，具体实现了对提升容器的运行状态、运行速度的在线实时监控和动态显示以及计算机的统一管理。

In order to meet the higher requirements for some scientific experiment due to site conditions limitation for data acquisition system's volume,power consumption and reliability,a real-time data acquisition system based on TMS320F2812 chip was designed,which could carry out real-time acquiring and recording for analog signals output from power system.

为了满足有些科学实验由于现场条件的限制对数据采集系统的体积、功耗以及可靠性等方面所提出的较高要求，设计了一种基于 TMS320F2812芯片的实时数据采集系统，该系统可对电力系统所输出的模拟电压信号进行实时的采集和记录。

Most of present airborne platforms are analogic control system, digital control system can improve the system general performance, digital control is the development direction of platform systems, digital control has especial techonoly, this paper focus on researching the key technologies of digital control of airborne electro-optical stable platform.

现有的机载平台大多采用模拟控制，数字控制系统能提高系统综合性能，便于系统调试，采用数字控制方式是平台系统的必然发展方向，系统辨识、控制器设计和多采样率问题的研究是数字控制系统研究的关键问题，有关机载光电稳定平台数字控制的这些关键技术研究是本文的目的。

In the process of establishing audit quality appraisal index system, this article decomposes it. According to the appraisal index system principle, it proposes audit quality synthesis appraisal index system of accounting firms by two levels and has determined the weight of each index using Analytic Hierarchy Process.

在构建审计质量评价指标体系的过程中，本文将会计师事务所审计质量进行层层分解，遵循评价指标体系的构建原则，提出了由一级指标和二级指标构成的会计师事务所审计质量综合评价指标体系，并利用层次分析法确定了各项指标的权重。

It using the system security analytic method. The appraisal index system had been designed before. It guaranteed the systematic characteristic, and integrity of this system, avoiding the omission and negligence. The practical application proved that this safety appraisal can used to dangerous chemical enterprises.

4本文所研究的评价指标体系是运用系统安全分析法事先设计的，保证了评价指标的系统性、完整性，避免评价时可能会造成的遗漏和疏忽，经实际应用表明，可用于对危险化学品生产企业进行安全评价。

Nowadays, most of research are to build a transmutative Petri Nets through adding controlling place sets, controlling arc sets and controlling policy to the basic Petri Nets, while the Controlled Petri Nets could be used to argue many controlling theory problems conveniently and to induce many logically and physically supervisory and solve the Event Feedback Controlling Problems and State Feedback Controlling Problem in DEDS supervisory theory.

目前大多数的研究表现为在变形后的受控Petri网基础上，利用各种方法求得各种逻辑型、结构型控制器，解决DEDS监控理论中的事件反馈控制问题与状态反馈控制问题。

On one hand, there are discussions with the works council and union about extension of short time working up to the end of September.

一方面，有讨论，工程理事会和联盟关于延长工作时间短至9月底。