支持分布式超级计算的工作站群集系统

群集技术是当今并行分布处理的发展方向，本文介绍支持分布式超级计算的工作站群集系统的基本概念及其主要研究课题，着重讨论了ＡｃｔｉｖｅＭｅｓａｇｅ通信、全局ＵＮＩＸ和ＭＰＩ标准等问题。     

Open VMS AXP1.5版

Ｏｐｅｎ ＶＭＳ ＡＸＰ１．５版新增的能力包括：多种ＶＭＳ群集配置，支持对称多处理，ＤＥＣｄｔｍ服务以及加强型批／打印服务。Ｏｐｅｎ ＶＭＳ ＶＡＸ和Ｏｐｅｎ ＶＭＳ ＡＸＰ系统现在能并存于群集配置中，从而提供优越的投资保障。     

群集系统的软控制

考虑欧氏空间中群集动态系统的"软控制"问题,即在不改变群集系统中个体间现有规则的条件下,通过增加一个或多个可控智能体干扰群集个体的行为,使群集中心转移到期望的位置.给出了可控智能体的控制规则,并利用粒子群(PSO)算法讨论了群集系统软控制的最优收敛问题.实例研究表明了"软控制"在群集系统中的可行性.     

浅谈群集技术在办公自动化系统中的应用

本文简要介绍了群集的基本概念及类型,并通过在办公系统中的应用详细说明了群集的实现,以及使用过程中的一些常见问题和注意事项。     

谈群集技术在服务器中的实现方法

介绍了基于WindowsServer2003群集服务的涵义、功能优势、使用环境及建立群集的条件．并以两台服务器建立群集服务为例,给出了群集技术在服务器中的实现方法,这在一定程度上能提高整个服务器系统的性能和稳定性。     

群集技术及其在OA系统中应用探讨

本文介绍了群集技术在其不同类分方法，分析了机关行政（OA）系统的基本需求以及功能组成，简述了Domino群集的规划步骤，实施原则，最后介绍了利用Domino群集技术部署OA系统的具体案例及其应用效果。     

群集系统的软控制

考虑欧氏空间中群集动态系统的“软控制”问题,即在不改变群集系统中个体间现有规则的条件下,通过增加一个或多个可控智能体干扰群集个体的行为,使群集中心转移到期望的位置.给出了可控智能体的控制规则,并利用粒子群(PSO)算法讨论了群集系统软控制的最优收敛问题.实例研究表明了“软控制”在群集系统中的可行性.

     

Sun增强群集解决方案──新的Internet服务和HA工具箱可保证连续的正常运行时间

Ｓｕｎ增强群集解决方案新的Ｉｎｔｅｒｎｅｔ服务和ＨＡ工具箱可保证连续的正常运行时间ＳｕｎＭｉｃｒｏｓｙｓｔｅｍｓ分司１９９７年４月２９日宣布推出增强的服务器群集解决方案系列。这些解决方案提供的新高可用性Ｉｎｔｅｒｎｅｔ服务和工具箱，可让客户将大多数标...     

业界动态

群集眼务器取代超级计算机日前在达拉斯举行的Ｓｕｐｅｒｃｏｍｐｕｔｉｎｇ２０００展给Ｓｕｎ、Ｄｅｌｌ和ＩＢＭ等公司提供了一个展示他们在超级计算领域的新进展的机会;而且表明各公司已达成共识。单独的超级计算机将让位给多群组高性能群集服务器。Ｓｕｎ将ＳＭＰ方式引入超级计算。Ｓｕｎ和美国在线（ＡＯＬ）计划明年利用“ＡＯＬ管道通过Ｉｎｔｅｒｎｅｔ将Ｓｕｎ　Ｅｎｔｅｒ－ｐｒｉｓｅ１００００服务器群集连接在一起。Ｄｅｌｌ官员在Ｓｕｐｅｒｃｏｍｐｕｔｉｎｇ　２０００谈到最近用Ｄｅｌｌ的群集服务器替换了康标尔大学的…     

基于虚拟服务器的实时数据库群集方案探讨

详述MSCS群集服务的概念,分析虚拟系统的特点,介绍InfoPlus.21实时数据库在流程行业信息化建设中的地位和作用,深入探讨了如何融合群集技术与虚拟系统两者的优势,实现InfoPlus.21实时数据库系统群集的方法,为优化系统整体性能、提高可靠性及快速响应能力、进而实现企业以较低成本构建实时数据库服务器群集提供了可操作性的技术方案。     

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。