SNMP扩展代理的快速实现及扩展技巧

在理解简单网络管理协议基本概念的基础上，提出基于UCD－SNMP引擎快速实现SNMP网管扩展代理的机制，并利用MIB实例展示了代理扩展的技巧，使网管开发者将重点放在专用MIB库的组织和设备特定代码的设计上。     

SNMP委托代理在嵌入式系统中的实现

在不需要对原有设备进行改造的前提下,通过委托代理实现对非SNMP设备的管理是一种广泛采用的方法.本文提出了一种将私有协议中的管理信息抽象为SNMP MIB对象的方法,并介绍了在Rabbit 3000嵌入式系统上如何实现支持多种设备的SNMP委托代理.     

SNMP委托代理在嵌入式系统中的实现

在不需要对原有设备进行改造的前提下,通过委托代理实现对非SNMP设备的管理是一种广泛采用的方法。本文提出了一种将私有协议中的管理信息抽象为SNMPMIB对象的方法,并介绍了在Rabbit3000嵌入式系统上如何实现支持多种设备的SNMP委托代理。     

XML在网管协议中的应用及扩展

随着计算机网络的飞速发展，对于网络管理的性能要求越来越高。传统的简单网络管理协议已经不能够满足当前的需求。本文讨论了XML在网管协议中的应用和扩展，主要包括在数据说明，基于SNMP等传统网管以及基于SOAP／XML网管协议中的应用和扩展。     

基于SNMP的嵌入式Proxy代理的设计与实现

许多早期的嵌入式设备通过专用接口(如RS-232)进行管理,不支持网络管理.采用基于简单网络管理协议(SNMP)的Proxy 代理,可以满足嵌入式设备的网络管理需求.对Proxy代理的工作原理进行了说明,阐述了Proxy代理的软硬件设计方法,并将Proxy 代理成功地应用于微波通信设备,为嵌入式设备快速升级提供了一种通用的解决方案.     

基于SNMP和OPC的泵站监控代理的实现

为实现对城市污水泵站设备的远程实时监测与控制,分析简单网络管理协议（SNMP）和OLE for Process Control（OPC）技术的特点及其实现方法。结合2种技术,运用AgentX协议及在SNMP Agent中嵌入OPC客户端的方式构建扩展代理/管理系统,通过举例分析,验证SNMP和OPC技术可增强设备的运行安全,提高泵站运行效率。     

Windows NT下SNMP服务扩展代理的实现

对简单网络管理协议的模型和管理信息库进行了简要介绍，并在此基础上介绍了如何实现基于NT下SNMP服务的扩展代理。     

基于SNMP的业务管理系统研究与实现

分析了网络管理的发展趋势,指出了简单网络管理协议(SNMP)在业务系统管理方面的不足,在SNMP网络管理理论的基础上设计了一个业务管理原型系统.该系统中设计了统一的管理信息接口来获取业务系统的相关信息,扩展了业务系统管理信息结构.在管理信息接口的基础上实现业务管理信息采集代理,并实现业务系统自动拓扑发现、业务系统性能管理以及业务系统故障管理.分析比对的结果表明,该原型系统实现了对业务系统的监控和管理,完善了SNMP网络管理的功能.     

基于STP协议的物理网络拓扑发现算法

拓扑发现是网络管理的重要基础。该文提出一种基于网桥生成树协议STP的算法,利用简单网络管理协议(SNMP)获得各个交换机MIB库中的生成树状态信息,根据生成树协议推导出网络的物理拓扑。和已有方法相比,该算法不要求各个网桥FDB表的信息是完备的,同时也能很好地发现备份链路和集线器、哑交换机等不支持SNMP的设备。实验表明该算法是一个准确、全面的拓扑发现算法。     

复杂网络环境下SNMP和CMIP集成管理技术

网络管理协议是网络管理系统重要组成部分,简单网络管理协议(SNMP)和公共信息管理协议(CMIP)是目前两种重要的网络管理协议,这两种管理协议在信息结构定义和通信机制上存在很大差异,论文对这两种管理协议的集成技术进行了研究,并重点讨论用基于SNMP协议的管理系统管理基于CMIP协议的网络设备的委托代理技术的一种实现.     

Only connect: teaching, technology and telesis

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.     

European Community policy and the market

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.     

一种自适应子融合集成多分类器方法

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。     

Avoiding semantic and temporal gaps in developing software intensive systems

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.     

Designing economic np control charts: A programmed simulation approach

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.     

The development of robot art

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     

Explanation and prediction: an architecture for default and abductive reasoning

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.     

Three Process Perspectives: Organizations, Teams, and People

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.     

基于复小波噪声方差显著修正的SAR图像去噪

提出了一种基于复小波域统计建模与噪声方差估计显著性修正相结合的合成孔径雷达(Synthetic Aperture Radar,SAR)图像斑点噪声滤波方法。该方法首先通过对数变换将乘性噪声模型转化为加性噪声模型,然后对变换后的图像进行双树复小波变换(Dualtree Complex Wavelet Transform,DCWT),并对复数小波系数的统计分布进行建模。在此先验分布的基础上,通过运用贝叶斯估计方法从含噪系数中恢复原始系数,达到滤除噪声的目的。实验结果表明该方法在去除噪声的同时保留了图像的细节信息,取得了很好的降噪效果。     

基于QTE的蒙古文显示机制研究与实现

蒙古语言是中国蒙古族使用的通用语言,由于蒙古文区别于其他文字的书写方式和其自身变形机制等特点,在很多通用的文字处理引擎中都不被支持。在嵌入式产品开发与应用领域中Linux加QTE已经成为流行方式。该文给出了一种在QTE环境上实现基于标准Unicode的蒙古文点阵显示和变形算法, 并自定义了支持蒙古文的QTE组件,扩展了QTE功能,为在Linux加QTE方式的嵌入式体系结构中处理蒙古文提供了一种解决方法。