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1.
分析了IPX/SPX协议的特性,研究了基于NOVELL网络环境下工作站之间实现点对点数据安全传输的技术,讨论了安全机制的主要设计方法。  相似文献   

2.
Classical IP Over ATM规范(上)   总被引:1,自引:0,他引:1  
ATM(异步传输模式)技术是目前最受人瞩目的高速网络技术之一,如何使ATM网络与现有的网络协议(如TCP/IP)相结合是ATM技术发展的关键性问题。本文通过对比分析了在ATM局域网与传统局域网上IP协议实现的异同,并较为深入地介绍了在ATM上运行TCP/IP协议的技术方案。  相似文献   

3.
本文介绍了互联网协议和异步传输模式的结合技术(IP over ATM),主要有ATM之上的多协议封装、经典IP网、网仿真和MPOA等技术,并以此分析了两者结合的原因、要点和形式。  相似文献   

4.
本文介绍了互联网协议和异步传输模式的结合技术(IP over ATM),主要有 ATM之上的多协议封 装、经典 IP网、局域网仿真和 MPOA等技术,并以此分析了两者结合的原因、要点和形式。  相似文献   

5.
IP电话采用的信道复用和基于分组交换的传输技术提高了线路传输利用率。HFC网双向改造的完成和 DOCSIS的不断完善为开展 IP电话增值业务提供了理想的接入网平台。本文研究了IP电话技术的现状、发展趋势,以及 IP电话的标准 H.323规约、 SIP、 MGCP、 RTP/RTCP和RSVP。最后介绍了一种国内开发的 HFC网上IP电话应用系统。  相似文献   

6.
利用JAVA实现远程图像的传输   总被引:1,自引:0,他引:1  
本文介绍利用Java语言、TCP/IPSocket和图形显示的双缓冲技术来实现Client/Server方式下的远程图像的传输。  相似文献   

7.
协议是计算机通过网络彼此交流的一种“语言”。不同计算机之间必须使用相同的网络协议才能进行通信。Windows95提供了三种网络协议:IPX/SPX、NetBEUI和TCP/IP,三者面向不同网络需求和规模,各有优势。1、IPX/SPXIPX/SPX是...  相似文献   

8.
本文论述了ATM 兴衰和宽带IP 网的产生和发展。并讨论了基于TCP/IP 的实时传输标准和它在三网融合中的地位  相似文献   

9.
一、需求分析与设计原则随着计算机网络技术,尤其是TCP/IP技术的进步,电信网络的所有传统业务和新型业务都将在以IP技术为主的数据网中传输,使投资和营运成本大为下降,并进一步推动各种宽带多媒体业务进入社会和普通家庭。这些变化使人们的工作、生活、学习和...  相似文献   

10.
本文简要叙述了计算机网络与Internet及其协议TCP/IP的发展,重点介绍了TCP/IP协议的组成及与ISO/OSI参考模型的联系与区别。同时指出了Internet及TCP/IP的局限性,并介绍了TCP/IP的发展动态及最新技术  相似文献   

11.
Abstract This paper describes an approach to the design of interactive multimedia materials being developed in a European Community project. The developmental process is seen as a dialogue between technologists and teachers. This dialogue is often problematic because of the differences in training, experience and culture between them. Conditions needed for fruitful dialogue are described and the generic model for learning design used in the project is explained.  相似文献   

12.
European Community policy and the market   总被引:1,自引:0,他引:1  
Abstract This paper starts with some reflections on the policy considerations and priorities which are shaping European Commission (EC) research programmes. Then it attempts to position the current projects which seek to capitalise on information and communications technologies for learning in relation to these priorities and the apparent realities of the marketplace. It concludes that while there are grounds to be optimistic about the contribution EC programmes can make to the efficiency and standard of education and training, they are still too technology driven.  相似文献   

13.
融合集成方法已经广泛应用在模式识别领域,然而一些基分类器实时性能稳定性较差,导致多分类器融合性能差,针对上述问题本文提出了一种新的基于多分类器的子融合集成分类器系统。该方法考虑在度量层融合层次之上通过对各类基多分类器进行动态选择,票数最多的类别作为融合系统中对特征向量识别的类别,构成一种新的自适应子融合集成分类器方法。实验表明,该方法比传统的分类器以及分类融合方法识别准确率明显更高,具有更好的鲁棒性。  相似文献   

14.
Development of software intensive systems (systems) in practice involves a series of self-contained phases for the lifecycle of a system. Semantic and temporal gaps, which occur among phases and among developer disciplines within and across phases, hinder the ongoing development of a system because of the interdependencies among phases and among disciplines. Such gaps are magnified among systems that are developed at different times by different development teams, which may limit reuse of artifacts of systems development and interoperability among the systems. This article discusses such gaps and a systems development process for avoiding them.  相似文献   

15.
This paper presents control charts models and the necessary simulation software for the location of economic values of the control parameters. The simulation program is written in FORTRAN, requires only 10K of main storage, and can run on most mini and micro computers. Two models are presented - one describes the process when it is operating at full capacity and the other when the process is operating under capacity. The models allow the product quality to deteriorate to a further level before an existing out-of-control state is detected, and they can also be used in situations where no prior knowledge exists of the out-of-control causes and the resulting proportion defectives.  相似文献   

16.
Going through a few examples of robot artists who are recognized worldwide, we try to analyze the deepest meaning of what is called “robot art” and the related art field definition. We also try to highlight its well-marked borders, such as kinetic sculptures, kinetic art, cyber art, and cyberpunk. A brief excursion into the importance of the context, the message, and its semiotics is also provided, case by case, together with a few hints on the history of this discipline in the light of an artistic perspective. Therefore, the aim of this article is to try to summarize the main characteristics that might classify robot art as a unique and innovative discipline, and to track down some of the principles by which a robotic artifact can or cannot be considered an art piece in terms of social, cultural, and strictly artistic interest. This work was presented in part at the 13th International Symposium on Artificial Life and Robotics, Oita, Japan, January 31–February 2, 2008  相似文献   

17.
《计算机科学》2007,34(4):148-148
Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.  相似文献   

18.
为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.  相似文献   

19.
Although there are many arguments that logic is an appropriate tool for artificial intelligence, there has been a perceived problem with the monotonicity of classical logic. This paper elaborates on the idea that reasoning should be viewed as theory formation where logic tells us the consequences of our assumptions. The two activities of predicting what is expected to be true and explaining observations are considered in a simple theory formation framework. Properties of each activity are discussed, along with a number of proposals as to what should be predicted or accepted as reasonable explanations. An architecture is proposed to combine explanation and prediction into one coherent framework. Algorithms used to implement the system as well as examples from a running implementation are given.  相似文献   

20.
This paper provides the author's personal views and perspectives on software process improvement. Starting with his first work on technology assessment in IBM over 20 years ago, Watts Humphrey describes the process improvement work he has been directly involved in. This includes the development of the early process assessment methods, the original design of the CMM, and the introduction of the Personal Software Process (PSP)SM and Team Software Process (TSP){SM}. In addition to describing the original motivation for this work, the author also reviews many of the problems he and his associates encountered and why they solved them the way they did. He also comments on the outstanding issues and likely directions for future work. Finally, this work has built on the experiences and contributions of many people. Mr. Humphrey only describes work that he was personally involved in and he names many of the key contributors. However, so many people have been involved in this work that a full list of the important participants would be impractical.  相似文献   

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