一种基于ATCA平台下的IPMI监视软件

ATCA（高级电信计算架构）有着优秀的机架管理功能,这种功能基于IPMI（智能平台管理接口）规范实现。设计了一种ATCA平台下的对ShMC（机架管理控制器）和刀片上IPMC（智能平台管理控制器）模块间的IPMI报文交互进行监控的软件,从而能够对刀片上的FRU的整个热插拔过程进行分析。该软件是用VC＋＋实现的,运行结果表明,它能够准确地显示IPMI报文的相关信息．令操作人员能够对ATCA单板的运行状态进行有效分析。     

ATCA之机箱管理及高可靠性设计与实现

本文介绍了在ATCA系统中的机箱管理,基于IPMI(Intelligent Platform Management Interface)规格兼容的管理技术,使管理人员能完成远程监控与管理,得知系统的健康状况,运行状态,实现远程配置。并结合系统管理功能,来提高系统的可靠性。     

基于国产平台的VPX架构IPMC控制器设计

针对VPX架构体系中由于IPMC未能完全按照规范要求设计而引发的一系列兼容性问题,提出了一种基于国产MCU控制芯片的通用IPMC控制器的设计与实现。该IPMC控制器应用于国产平台通信单元机箱内功能板卡端,设计满足VITA46.11标准和IPMI协议,作为管理系统的核心组件智能平台管理控制器,IPMC设计实现功能板卡与机箱控制器ChMC之间的标准IPMI管理以及各种故障信息的诊断与处理。该IPMC控制器管理接口设计灵活,可拓展性强,便于后续的移植与维护,经联调测试验证了该设计的灵活性与实用性。     

Sun将推出节能刀片

2月22日获悉,Sun公司宣布将在今年晚些时候推出基于UltraSPARC T1处理器的ATCA刀片服务器和Netra运营商级机架服务器。新的采用UltraSPARC T1处理器的刀片服务器,基于PICMG3.x标准,将能够减少大容量3G网络基础设施和IP服务架构中所需的刀片服务器的数目,在系统、功耗、冷却和所占空间诸方面为电信运营商节约数百万美元。Sun公司表示,UltraSPARC T1处理器对电信刀片架构极为理想,它比任何其他的ATCA(高级电信计算架构)刀片系统允许更大的吞吐量,可让网络设备供应商和电信运营商在行业最密集的ATCA刀片服务器上支持数目空前…     

一种应用于ATCA系统的IPMI解决方案

针对IPMI 2.0协议,提出一个简单有效的实现方案。利用32位RISC单片机HD64F2168丰富的I2 C总线资源,配合外围的多种传感器对ATCA单板健康状况实时监控,并将数据记录、存储,能够响应机架管理器的查询请求,为系统管理平台提供支撑,从而实现多单板系统的监控管理。该设计具有通用性好、开发易上手、研发风险小、投入成本低等优点。实验结果表明,各模块工作稳定,通信可靠,数据上报准确。     

软在管理

传统的第三方服务器管理解决方案并不适用于处理刀片服务器环境,但 F5公司和 Jareva 公司却在预备工具,这些工具可能提供更好的管理方式和刀片服务器规则。上月发布的 F5公司的 Big-IP 刀片服务器管理软件能够为刀片服务器的执行带来通信优化特性:Big-IP 的控制器将刀片连接为一个统一的计算平台,它不论是(机架)底盘内部的服务器刀片,还是运行在刀片上的应用程序,都可以智能地为 IP 通信分配最理想的资源。另外,Big-IP 刀片服务器控制器提供了可靠的 Socket 层加速、负载平衡、应用健康监视以及额外的安全特性。Big-IP 刀片控制器已经获得了在惠普 BC1100、ProLiant BL10e 刀片服务器上的运行鉴定,同样也通过了 RLX 公司的 ServerBlade 800i 刀片系统的认证测试。F5公司的官员说,因为它们变得可用,来自干其它供应商的刀片系统也将被鉴定。Big-IP 的价格与它所管理的在刀片服务器上的处理器数目相关。对于一个处理器,它的价格是4000美元;两个处理器将花费5500美元;而它的授权费用是     

基于ARM9的通用IPMC载板设计

针对ATCA构架体系中由IPMC没有完全按照规范要求设计而引发的兼容性差的问题,提出一种基于ARM 9的通用IPMC载板设计方案;该方案以ARM 9嵌入式微处理器为核心,设计了合理的硬件电路,符合PICMG 3.0规范和IPMI 2.0标准,可以适应各种背景的ATCA板卡管理;选取Radisys机箱作为实验平台,IPMC载板可以实现对ATCA板卡的管理并且与机箱管理进行可靠通信,有效验证了载板的可行性和通用性;通过将载板搭载在不同的FRU上进行实验,结果证明载板具有良好的兼容性。     

智能管理平台接口研究及实现

为了提高系统的可用性,越来越多的企业开始在其生产的设备中支持智能平台管理接口(IPMI)标准。文中主要研究了IPMI相关的内容,包括IPMI提出的背景、发展现状I、PMI相关的各种总线协议以及IPMI在实际中的应用,并给出了IPMI在C8051F020单片机上的实现。管理员可以通过MC对系统的温度、电压等参数进行查看或配置。当系统的指标超出预定的范围时,系统就会发出警报通知管理员。     

3U空间装12个CPU

NEC Express5800/420Ma 刀片服务器是专为特殊应用行业和高密度计算机环境设计的.刀片服务器的插入或移去(热插拔)都不会影响其它刀片服务器的运行.系统可以轻松地进行替换.并且将维护时间减少到最小.保证用户系统持续运行。需要指出的是.NECExpress5800/420Ma 在高3U 和4U 的插板中最多可容纳6块(12个处理器)处理器板.12块硬盘.相当于在标准的42U 机架上能够安装120个处理器以上.是空间有限的数据中心理想的平台选择。     

辅助系统综合监控平台在智能变电站中的应用

在变电环节,无人或少人值班模式已相当普及,为保障变电站的稳定运行．辅助系统综合监控平台可以满足更多项目需求：在变电站实现安全防范．防止不法分子偷窃、破坏：对变电站设备的运行情况及操作过程实现可视化监控：对变电站设备的运行场地实现环境监控;对变电站功能室大门实现出入口管理;变电站内辅助系统能够实现联动功能：实现与生产系统的联动以及信息一体化系统的互动,对变电站的设备巡检、应急指挥实现可视化监控;根据电网公司技术规范实现多级联网监控。     

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。     

How do children do mathematics with LOGO?

Abstract  This paper considers some results of a study designed to investigate the kinds of mathematical activity undertaken by children (aged between 8 and 11) as they learned to program in LOGO. A model of learning modes is proposed, which attempts to describe the ways in which children used and acquired understanding of the programming/mathematical concepts involved. The remainder of the paper is concerned with discussing the validity and limitations of the model, and its implications for further research and curriculum development.