iSCSI协议的仿真实现

分析了iSCSI协议原理，提出了利用iSCSI协议规定的特性和参数在OPNET8.0上实现iSCSI协议的思路和方法，建立了iSCSI仿真模型，分析了SCSI和iSCSI层的实现方法，定义了在实现过程中所处的状态，阐述了这两层在OPNET中的实现过程。     

基于.NET平台的网络课程创作系统的设计与实现

网络教学的开展需要优秀网络课程的支持。根据网络课程的特点，讨论了基于．NET平台下面的网络课程创作系统的设计和实现，对系统进行了分析和功能设计，并重点解析了几种关键的实现技术，如基于Web的可视化编辑的实现技术，数据库服务层实现技术，模板个性化的实现技术等。     

基于RTEMS的ATM网卡设备驱动程序以及CIPOA的研究与实现

分析了在RTEMS平台上设计和实现ATM网卡的设备驱动程序，并在此基础上进一步研究CIPOA技术的实现。针对特殊应用，在设备驱动程序和CIPOA的设计和实现中简化了协议实现，增强了实时性，并进行了综合性测试。     

基于网络处理器的IPSec协议实现技术研究

在总结了IPSec协议的实现框架的基础上，介绍了网络处理器的重要相关实现技术，例如树搜索引擎技术等，结合实际的工程经验提出一套基于网络处理器的IPSec实现方法，描述了重要实现环节，例如SAD＆SPD实现、IPSec协议处理、加／解处理单芯片方案等。最后，对在新型路由器上实现网络协议的开发方法的发展趋势作出了预测。     

MatriXVB上智能算法实现的研究

介绍了Matrix VB在工程上实现智能算法的一种方法。该方法可以降低代码的复杂度，提高系统可靠性，易于实现数据的动态表现。以实现自适应BP算法在冷却塔风机效能建模中的应用为例，介绍了实现过程，为实现其它智能算法提供参考。     

基于网格的分布并行计算策略

网格计算为用户处理很多复杂问题提供了新方法，用网格实现大规模分布并行计算是必然的趋势。文章给出了基于网格中间件Globus Toolkit来实现分布并行计算的两种策略：紧密耦合并行程序和松散耦台并行服务，并给出实现这两种策略的实现方法，为实现分布并行计算提供了新方法。最后根据所提出的并行计算策略，在网格计算环境下实现了一个分布并行计算实例，并给出了相应的试验结果。     

基于Linux的网络设备驱动程序的机制分析

从Linux设备驱动程序的分类入手，分析了网络设备驱动程序的结构，并讨论了网络设备驱动程序的实现模式，最后描述了实现中要注意的问题。经实践检验．本实现模式是成功的。     

基于PowerBuilder的运费编辑器的设计与实现

针对当前复杂的数据管理问题，利用功能强大的工具PowerBuilder9．0，开发出了火电厂燃料管理系统的智能化运费编辑器。文中介绍了编辑器的实现技术和实现思想，重点论述了PowerBuilder的数据窗口技术、人机交互技术和科学计算，并给出了具体的实现方法。实践表明，该编辑器结构简单、操作方便、通用性好，仅做适当调整即可应用到其他同类软件中。采用PowrBuilder开发工具，大大提高了工作效率，实现了数据管理的规范化，具有广泛的应用价值和推广前景。     

基于GSM网络的环境监控系统的实现

监控系统中，实现监控任何地方是一个棘手的问题，GSM网络的短消息技术为实现监控任何地方提供了很好的解决方案。介绍了一种基于GSM网络的环境监控系统，先介绍了系统的原理，然后着重介绍了系统中采集终端的实现和处理服务器的实现，并给出了部分程序片段。系统具有运行可靠，费用低廉及便于升级等特点，已经在实际中得到了应用，并且该系统在其它领域同样具有很大的应用前景。     

面向机群路由器的ForCES协议实现技术研究

在对机群路由器和ForES协议进行分析研究的基础上，提出了协议实现的总体框架，并对协议实现的关键技术进行了深入地分析。同时，设计和实现了一套开放智能控制平台原型系统，并在该平台上实现了ForES协议。     

INTRODUCTION TO THE SPECIAL ISSUE ON CASE-BASED REASONING IN THE HEALTH SCIENCES

There has been an explosion of interest in health sciences applications of case-based reasoning (CBR), not only in the traditional CBR in medicine domain, but also in bioinformatics, enabling home health-care technologies, CBR integration, and synergies between CBR and knowledge discovery. This special issue features the best papers from the third workshop on CBR in the health sciences, held at ICCBR-05 in Madrid. It is the third in a series of exciting workshops, the first two of which were held at ICCBR-03, in Trondheim, Norway, and at ECCBR-04, in Madrid, Spain. The nine high-quality papers introduced here represent the research and experience of twenty-two authors working in eight different countries on a wide range of problems and projects. These papers illustrate some of the major trends of current research in CBR in the health sciences, and represent overall an excellent sample of the most recent advances of CBR in the health sciences.     

The Old-Age Healthy Dependency Ratio in Europe

The aim of this study is to answer the question of whether improvements in the health of the elderly in European countries could compensate for population ageing on the supply side of the labour market. We propose a state-of-health-specific (additive) decomposition of the old-age dependency ratio into an old-age healthy dependency ratio and an old-age unhealthy dependency ratio in order to participate in a discussion of the significance of changes in population health to compensate for the ageing of the labour force. Applying the proposed indicators to the Eurostat's population projection for the years 2010-2050, and assuming there will be equal improvements in life expectancy and healthy life expectancy at birth, we discuss various scenarios concerning future of the European labour force. While improvements in population health are anticipated during the years 2010-2050, the growth in the number of elderly people in Europe may be expected to lead to a rise in both healthy and unhealthy dependency ratios. The healthy dependency ratio is, however, projected to make up the greater part of the old-age dependency ratio. In the European countries in 2006, the value of the old-age dependency ratio was 25. But in the year 2050, with a positive migration balance over the years 2010-2050, there would be 18 elderly people in poor health plus 34 in good health per 100 people in the current working age range of 15-64. In the scenarios developed in this study, we demonstrate that improvements in health and progress in preventing disability will not, by themselves, compensate for the ageing of the workforce. However, coupled with a positive migration balance, at the level and with the age structure assumed in the Eurostat's population projections, these developments could ease the effect of population ageing on the supply side of the European labour market.     

Stability of nonlinear hybrid dynamical systems with time delay via sum of squares decomposition

Considering an infinite number of eigenvalues for time delay systems, it is difficult to determine their stability. We have developed a new approach for the stability test of time delay nonlinear hybrid systems. Construction of Lyapunov functions for hybrid systems is generally a difficult task, but once these functions are found, stability’s analysis of the system is straight-forward. In this paper both delay-independent and delay-dependent stability tests are proposed, based on the construction of appropriate Lyapunov-Krasovskii functionals. The methodology is based on the sum of squares decomposition of multivariate polynomials and the algorithmic construction is achieved through the use of semidefinite programming. The reduction techniques provide numerical solution of large-scale instances; otherwise they will be computationally infeasible to solve. The introduced method can be used for hybrid systems with linear or nonlinear vector fields. Finally simulation results show the correctness and validity of the designed method. Recommended by Editorial Board member Young Soo Suh under the direction of Editor Jae Weon Choi. The authors wish to express their thanks to Dr. A. Papachristodoulou and Dr. M. Peet for their helpful comments and suggestions. Mohammad Ali Badamchizadeh was born in Tabriz, Iran, in December 1975. He received the B.S. degree in Electrical Engineering from University of Tabriz in 1998 and the M.Sc. degree in Control Engineering from University of Tabriz in 2001. He received the Ph.D. degree in Control Engineering from University of Tabriz in 2007. He is now an Assistant Professor in the Faculty of Electrical and Computer Engineering at University of Tabriz. His research interests include Hybrid dynamical systems, Stability of systems, Time delay systems, Robot path planning. Sohrab Khanmohammadi received the B.S. degree in Industrial Engineering from Sharif University, Iran in 1977 and the M.Sc. degree in Automatic from University Paul Sabatie, France in 1980 and the Ph.D. degree in Automatic from National University, ENSAE, France in 1983. He is now a Professor of Electrical Engineering at University of Tabriz. His research interests are Fuzzy control, Artificial Intelligence applications in control and simulation on industrial systems and human behavior. Gasem Alizadeh was born in Tabriz, Iran in 1967. He received the B.S. degree in Electrical Engineering from Sharif University, Iran in 1990 and the M.Sc. degree from Khajeh Nasir Toosi University, Iran in 1993 and the Ph.D. degree in Electrical Engineering from Tarbiat Modarres University, Iran in 1998. From 1998, he is a Member of University of Tabriz in Iran. His research interests are robust and optimal control, guidance, navigation and adaptive control. Ali Aghagolzadeh was born in Babol, Iran. He received the B.S. degree in Electrical Engineering in 1985 from University of Tabriz, Tabriz, Iran, and the M.Sc. degree in Electrical Engineering in 1988 from the Illinois Institute of Technology, Chicago, IL. He also attended the School of Electrical Engineering at Purdue University in August 1998 where he was also employed as a part-time research assistant and received the Ph.D. degree in 1991. He is currently an Associate Professor of Electrical Engineering at University of Tabriz, Tabriz, Iran. His research interests include digital signal and image processing, image coding and communication, computer vision, and image analysis.     

The application of IT in organisations: Some trends and issues

Abstract

This paper describes some trends and issues in the application of information technology in organisations. Technology trends are outlined in the areas of computing power, telecommunications, networking, software and standards. Some trends in the applications of IT are described with respect to developments in information systems and office automation. Some differences in the likely role of IT in the industrialised and developing countries are discussed. The second half of the paper deals with issues in the management of IT applications in organisations, and issues are identified as being political, organisational and social in nature in addition to technical. A social systems framework is proposed for the analysis of these issues. Some specific IT issues are then discussed involving alternative stakeholder perspectives, the analysis of decision making processes, the process of consultation and communication and the organisational impacts of IT applications.     

汉语多重关系复句的关系层次分析

汉语多重关系复句的句法分析问题主要由复句中的关系分析和层次分析两部分组成.将多重关系复句中的层次分析作为研究对象.它是针对多种逻辑或并列关系,按照一定层次组成复杂主从关系复句而进行的关系层次分析过程.为了有效地形式化地表示多重关系复句的层次结构,提出了关系层次树的概念,并以此为基础构造文法,采用部分数据驱动的确定性移进-归约算法实现多重关系复句的关系层次分析.通过开放测试对计算机实现的多重关系复句句法分析器进行考察,93.56%的正确率使所提出的分析方法的有效性和正确性得到了充分的验证.     

Are My Neighbours Ageing Yet? Local Dimensions of Demographic Change in German Cities

Among the highly developed countries, demographic ageing is particularly advanced in Germany. Accentuated by migration, there is great regional variation in the progress of demographic change. Within urban areas, residential neighbourhoods differ considerably in their demographic composition and perspectives. Based on municipal data, this paper examines regional variability in the diversity and pace of neighbourhood-level ageing. Focusing on the Rhine-Ruhr conurbation in North Rhine-Westphalia, the analysis outlines at what pace ageing proceeds in a variety of neighbourhoods, which attract no constant influx of working-age migrants. After decades of suburbanisation, in the period from 1998 to 2008 regional migration concentrated on the central districts of large cities. More profoundly in the most prosperous cities growing in population than in other cities, childless working-age adults separate from other age groups and family types in selected central city quarters. The findings suggest that spatial differentials in ageing are likely to affect future location decisions and, thereby, regional and local prosperity.     

从教育公平看农村教育信息化

在农村大力推行教育信息化，旨在缩小城市与农村的教育差距。而在实践过程中，由于城乡教育的不公平所带来的影响，教育信息化在某种程度上却扩大了城乡教育差距。城乡居民的经济收入、人口数量、文化基础的差异，政府投入政策与相应的制度失衡以及城乡教育资源差异都在一定程度上阻碍了农村教育信息化。     

关于烟气在线监测装置SO2周期性异常的分析与处理

本文针对目前电厂脱硫烟气连续排放监测系统（CEMS）中SO2数据周期性波动,通过对历史数据曲线分析排查,发现取样探头温控仪故障导致取样探头加热器无法加热,烟气中水分遇冷凝结在管壁,管壁中的水分平时吸收烟气中的SO2,导致测量值偏低,待水珠汇聚变大流入下面带加热的取样管中后,水中溶解SO2的集中释放,导致数据在短期急剧上升,蒸发释放完后回归到原来的水平,形成这样一个周期性吸收和集中释放的过程。可见烟气取样管道温度保护环节在烟气测量中的作用非常重要。