传输网络

Under the new situation,along with the continual development of national economy,the importance of closed circuit television system enhances unceasingly in the city public security management.

在新的形势下，随着国民经济的持续发展，视频监控系统在城市治安管理中的重要性不断提高，该文从视频监控系统平台的建设模式和特点，总体构成、功能及主要设备的选配等方面入手，通过不同网络传输的连网方式，提出了解决所有用户及场所统一监控系统平台的建设方案，为城市的综合治理提供了重要的手段。

Its main task is to make students understand clearly and wholly the basic theory, analysis result and the latest development of information theorem and coding by teaching and exercises, which can build a substantial theory basis for studying the subsequent courses on the transmission, storage and processing of information, image and speech source compression and coding, and error-correcting coding for computer communication and wireless mobile communication, as well as the research and development of modern code theory.

它的主要任务是通过教学和习题，使学生对信息与编码的基本理论，主要分析结果以及最新的发展有一个清晰和完整的认识和理解。为学习和研究信息的传输，存储和处理相关类的后续课程，以及图像与语音信源压缩编码、计算机网络通信与无线移动通信纠错编码、以及各种现代密码理论与技术的研究和开发，打下坚实的理论基础。

Through analyzing report forms format of IEC 60 870-5104 stipulation,as well as considering computer monitoring system of 330kV Dashimen and Jingyang substation and experiences of provincial dispatching system,the paper studies some command flow,and provides technical safeguard for provincial dispatching automation system adopting network stipulations transmission process.

通过分析IEC 60 870-5-104规约的报文格式，借鉴330 kV景阳变、大石门变计算机监控系统和省调自动化系统的联调经验，研究了规约的各种命令流程，为省调自动化系统采用网络规约传输提供了技术保障，同时也极大地丰富了调度自动化系统的应用范围。

Objective: To study the methods for DICOM image processing and network communications.

目的 研究WINDOWS环境下DICOM图像处理和网络传输方法。

In this thesis, we will mainly do research on the novel scheme for Digital image Steganography, Digital Image Secret Transmission in network and the development of the information hiding device for application. The main contributions of this thesis are as following: The novel conversion method for mapping image to complex number is proposed, and the plus, minus, multiply and complex conjugate operation of image are defined based on Positional number systems and complex number system. Following new results have been gotten: 1 The suitable complex number basis to be used to express integers is a big set. 2 Any image can be mapping into a one-to-one point. 3 Lots of image processing problem can be considered based on geometric theory.

在本论文中，研究工作集中在数字图像伪装算法的新模型、图像在网络中的加密传输的新方案和信息伪装设备的研发等三个方面，主要包括：基于位值制记数法和复数系理论，提出利用复数作为基底的数字图像新的表示方法，用复数运算定义了图像和图像间的"加"、"减"、"乘"、"共轭"等运算关系；得到理论结果： 1、能表示任何整数的复数基是很大的一个集合。2、任何一幅图像，都能和复平面上的一个点一一对应。3、可以将图像问题化归为平面几何问题处理。4、复数系下的图像表示适合用于信息伪装。

Therefore, the reliable transmission of the compressed video over networks and wireless channels has been much attention.

所以，压缩视频在网络及无线信道上的可靠传输越来越得到广泛重视。

They enable the transfer of medical information via telephone, the Internet or other networks in order to efficiently support the consultation of patients and even remote medical treatments or examinations, explained Gérard Comyn, Head of Unit, ICT for Health.

它们使医疗信息可以通过电话、互联网或其他网络传输，以便于有效支持患者咨询与远程医疗治疗或检查。

Energy of nodes in wireless sensor networks was spent on delivering the packets mostly. In order to decrease the number of packets, but not increase the time delay simultaneously, a model of data dissemination based on confidence coefficient was presented.

无线传感器网络中节点的能量大部分用来传输数据，为减少数据的传输量，同时不增加数据包的延迟，提出了基于置信因子的数据分发概念。

Congestion control is an important problem in network transmission.

拥塞控制是网络传输中的重要问题。

From the motion equation of the bar which vibrates one-dimensionally and longitudinally, the model of mechanical four-terminal network and the transfer equations are set up, and the natural frequency equation of coniform horn and the ratio of speed of vibration are derived.

从变截面杆作一维纵振动的运动方程出发，建立机械四端网络的数学模型及传输特性方程，导出了圆锥形变幅杆的频率方程和振速比。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。