IP SAN基于IP的存储区域网络

分析了存储区域网技术现状，详细介绍了几个基于IP的存储网络技术方案（FCIP,iFCP和iSCSI)，并探讨IP SAN技术的优势和所面临的问题，结果表明，IP SAN具有高性能、低成本和数据共享的优势。     

IP SAN基于IP的存储区域网络

分析了存储区域网技术现状,详细介绍了几个基于IP的存储网络技术方案(FCIP,iFCP和iSCSI),并探讨IP SAN技术的优势和所面临的问题.结果表明,IP SAN具有高性能、低成本和数据共享的优势.     

IP存储技术研究*

分析了存储网络技术现状,介绍了几种基于IP的存储网络技术方案（FCIP,iFCP和iSCSI）,并对这三种技术进行了较为详细的分析和比较,最后探讨了IP存储技术的优势和存在的问题。     

基于IP的SAN互联技术的研究

Both the requirement of the application and the development of the technology invoke the research of the new networking technology in network storage,currently the IP-based SAN has become the new focus.The main networking technology used in the IP-based SAN is:iSCSI,FCIP,iFCP,mFCP.These protocols all implement the transmitting of SCSI block I/O over the TCP/IP.To understand the protocols deeply,this paper analyzes and compares the protocols intensively.     

网存天下——SAN、NAS技术的分析比较

SAN 和 NAS 因满足用户不同层面的应用需求而共存,同时随着iSCSI、IP、Infiniband 等技术的不断出现,未来的 SAN、NAS 最终将逐渐走向统一     

iSCSI SAN技术及其应用

以电子商务为代表的各种网络服务业的飞速发展，对网络存储提出了更高的要求，并由此诞生了许多先进的网络存储技术。其中最有代表的是SAN，而尤为突出的是iSCSI SAN，即融入了基于网络的小型计算机标准接口的SAN。本文分析NAS和SAN的特点，详细阐述SAN以及iSCSI SAN的体系结构和特点，论述iSCSI技术的应用。     

有备无患——构建企业存储系统

近年来,网络存储行业大有“山雨欲来风满楼”之势。先是有如FC和SSA等专门为存储技术开发的协议;后又有SAN、NAS及ESN等各种存储体系结构的出现;如今,iSCSI、iFCP和iSNS等新技术与新概念也款款而来,令人目不暇接。     

存储

产品型号:BrocadeSilkWorm多协议路由器发布时间:2004年10月产品特性:支持SAN网络的高速增长,最大限度发挥高端资源的作用。能够在每个端口上支持三种多协议路由服务FC-FC、FCIP、iSCSI),最大限度提高灵活性,满足广泛的业务需求。通过逻辑SAN(LSAN),带来跨越SAN边界的安全,而有选择的光纤通道设备连接,支持在远距离IP网络上不间断地共享连接和资源,促进业务连续性解决方案的实现。可以让低成本iSCSI服务器访问共享式的光纤通道SAN资源。利用按需提供端口(Port-on-Demand)特性,快速、方便、经济有效地从8端口扩展到16端口。…     

一种基于iSCSI的SAN的研究与实现

网络上的数字信息呈爆炸性增长存储区域网(storage area network，SAN)越来越多的在企业级存储中得到应用，目前SAN的主流技术采用Fibre Channel(FC)协议．它性能高、可扩展性好，但也存在价格高、互操作差和管理等方面诸多的不足，阻碍了它进一步的应用和普及，为了克服这些不足，人们开始探索新的SAN互联技术．通过对iSCSI和传统的Fibre Channel互联技术较深入的对比，分析了iSCSI的技术关键，并给出一种基于iSCSI的SAN的设计方案及实验结果．     

浅谈IP SAN存储技术在高校数据中心的应用研究

本文介绍了目前比较流行的网络存储FC SAN和IP SAN技术,并对它们的优缺点进行了比较,阐述了iSCSI协议及其工作原理。结合高校数据中心存储的需求分析,给出了一种基于iSCSI协议的经济实用、高性价比的高校数据中心网络存储设计方案。     

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。     

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.