周刊IT指数

由于中关村证券涉嫌挪用客户交易结算资金违规经营，已于2月24日被中国证监会委托中国证券投资者保护基金进行托管清算。而中关村证券的这次“失火”，却秧及了无辜的池鱼：清华紫光（000938）日前公告称，由于中关村证券被托管．将对该公司的经营业绩产生重大负面影响。作为中关村证券的参股公司，清华紫光共持有中关村证券6000万股股份。     

证券数据仓库在证券业的应用及其结构

讨论证券行业的发展，提出适合未来一段时期证券数据仓库的基本结构。分析了证券业的竞争态势，总结了证券数据仓库的建设目标和结构。利用数据挖掘技术，提出证券客户分析的维度，总结了客户分析的内容；提出了强化经纪人和营销分析，总结了相应的分析内容。基于多维度的客户分析、经纪人分析、营销分析将成为主导券商数据仓库建设的主要任务之一，数据仓库和证券集中交易等系统一起构成完整的客户服务平台。     

证券网络安全性完善初探

分析了证券网络的构成与安全隐患，利用IPX／SPX网络通信技术，设计了可侦测指定工作站工作状态以及可及时发现盗用密码的非法用户的监控程序，此外还设计了证券网络接口库实时增量备份工具，从而有效完善了证券网络的安全性。     

证券交易系统的开发与应用

本文介绍了证券交易系统的运行模式，分析了证券系统的结构及其实现过程，总结了系统的开发体会，提出了证券的发展方向。     

股票衍生证券定价模型的研究

若金融衍生证券的估值没有确切的表达方式时，可用数值分析法来估算其值，这样可以弥补金融衍生证券的定价公式在某些条件得不到满足而不能应用的局限性，以便更合理，准确地为金融衍生证券的定价提供科学的参考。本文在股票衍生证券定价模型的基础上，研究了美式期权估值的数值分析方法。     

基于Web的证券信息定制服务研究

讨论如何建立一个Internet／Intranet上的证券信息服务接入平台，实现为各类用户提供其所需的特定证券信息的证券信息服务系统。该系统提供证券信息源的收集建立、证券信息存储、证券信息处理、证券信息提供等全过程的证券信息服务，其主要特点是为客户提供基于“Web服务”概念的“证券信息个性化定制服务”——即根据每个客户的特殊要求，通过组合相应的Web服务来为客户提供其所需要的特定信息。     

证券广播、信息处理系统的设计与实现

本文提出一种证券广播、信息处理系统，能实时的完成电脑证券系统的所有功能又无需上网。使用不同的接口．可应用于电脑系统和电视系统。本文主要从两个方面论述了该系统的原理，以W77E58为主芯片的证券信息广播服务器系统和以DALLS80C320为主要芯片的证券信息处理（接收、分析、交易）系统，并在此基础上，详细介绍了实现证券信息广播和接收、分析、交易的方法和原理。     

麻雀虽小 五脏俱全——汕头证券交易手段一瞥

汕头证券的规模也许无法与国内的大券商相提并论．但它却有着独到之处：以特色占优，以服务取胜。而基础建设的良好，更是汕头证券稳定发展的必要条件。电话委托业务是传统的远程委托方式之一，客户只要通过音频电话拨通委托电话系统即可进行证券买卖操作。在传统的电话委托业务中，汕头证券拥有300根中继线，在同行业中处于前列，换言之，系统可以允许300个客户在同一时间进行电话委托。显然这种情况出现的几率很小，也就是说．在汕头证券进行电话委托业务，几乎可以做到“一拨就通”。汕头证券还有一大服务上的特色，就是——上门开户，既方便了用户，又提高了服务的层次。虽然传统的交易方式已经非常稳固，但时代在进步，其他现代的交易方式又不断地涌现了出来。     

证券安全 取之有道——解析HP产品在广州证券中的成功应用

目前在我国的证券行业中交易的实施己全部实现了电脑控制及网络化的数据传输。而在这一过程中所引发的安全性问题也成为了该领域企业和公司的关注焦点，显然，一个经常遭受盗贼光顾数据信息无法保证，亦或系统时时出现宕机的证券企业是丝毫没有诚信可言的，对于证券系统中IT设备的安全性问题自然也就成了百说不厌、百听不烦的话题。对此，广卅证券有限公司总裁助理刘向民可谓深有感触，因为广州证券有限公司十几年来一直坚持使用HP的服务器正是出于对其产品安生性及可靠性的信任。     

证券商电脑网络系统的设计和实施

本文以一个典型证券商广域电脑网络系统为例，从网络的软、硬件系统配置，应用软件的设计，通信系统的建立等多方面全面阐述了一个广域网络实时系统的构思、规化和建立，从不同角度探讨了证券电脑网络系统所应具备的实时性，容错笥及安全性。根据目前证券网络的状况，分析了证券电脑系统的发展趋势。     

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.     

应用于CSCW协同控制机制的分析与设计

基于因特网环境的CSCW中协同控制的研究,提出一个协同控制机制的概念模式,依此模式发展一个协同控制协议,实际应用于CSCW环境,使得在一个多用户信息共享环境中的群体合作能顺利进行,并增进了CSCW系统的协同程度和确保数据的一致性,发展成为一个可以应用于CSCW环境的协同控制协议.通过对该协同控制模式的研究结果,建立有实际应用目标的CSCW环境,推广到远程协作学习、协同设计、协同会诊、协同创作、群体决策等应用领域.     

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.     

探究开放式计算机基础实验教学

本文通过探究开放式计算机基础实验教学,从实验内容、实验过程、实验空间及学习方式等方面,采取激发学生的学习兴趣的措施,调动学生学习的主动性和积极性,培养学生自主学习的能力和创新能力,解决目前计算机基础实验教学存在的弊端。     

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。     

Mapping the vegetation changes in giant panda habitat using Landsat remotely sensed data

Since the 1950s, with national policy changes and socio-economic development, the habitat of the giant pandas has altered accordingly. This can also be inferred from the population changes of the giant pandas as reported in three national surveys. Thus, monitoring the changes in giant panda habitat and then taking appropriate action would be a valuable contribution to giant panda protection. In this paper, using existing habitats and potential habitats of the giant pandas as the study area, multitemporal remotely sensed data from the three national surveys are used as the data source. The land cover of the study area is mapped by the maximum likelihood classification (MLC) method. The overall accuracy and kappa statistics for the resulting classification are 0.8 and 90%, respectively. The results reveal that the current status of the giant panda habitat is very good. Between 1974 and 1989, because of deforestation in the area, the giant panda habitat deteriorated considerably; the total area of broadleaved forests, coniferous forests, mixed coniferous and deciduous broadleaved forests and shrubs decreased from 62.03% to 57.40% in the study area. However, from 1989 to 2002, due to the conservation policies put into action, the giant panda habitat recovered to some extent; the total area of broadleaved forests, coniferous forests, mixed coniferous and deciduous broadleaved forests and shrubs increased from 57.40% to 60.68% in the study area. However, conditions are different among the mountain systems. Taking into account only the total of broadleaved forests, coniferous forests, mixed coniferous and deciduous broadleaved forests and shrubs, in the Minshan mountain system, the forest cover changed from 57.70% in 1974 to 56.74% in 1989 and to 56.30% in 2002, which can be regarded as stable. In the Qinling mountain system, forested areas changed from 70.05% in 1974 to 66.93% in 1989 and to 67.17% in 2002, which reveals little change in this area. In the Qionglai mountain system, forested areas changed from 72.84% in 1974 to 71.53% in 1989 and to 73.22% in 2002; therefore, an increase can be noted in this area. In the Xiangling mountain system, forested areas also increased from 50.81% in 1974 to 50.20% in 1989 and to 53.15% in 2002. In the Liangshan mountain system, forested areas changed from 68.43% in 1974 to 55.81% in 1989 and to 60.07% in 2002. These results are in accordance with the giant panda population changes in different mountain systems. Thus, the best way to improve the threatened status of the panda population is to protect the current habitat and the potential habitat.     

产品质量设计在ERP系统中的开发应用

ERP系统在济钢的成功运行,使其无论在日常运营、资源配置上,还是生产的管理、采购、销售中,发挥着越来越重要的作用。面向客户、面向订单的全过程的产品质量设计,及其在生产过程中的跟踪,提高客户满意度,实现精准、高效、和谐的生产模式上起着决定性作用。     

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.     

日汉机器翻译中词的自动切分技术

本文阐述NDJCMT系统中词的自动切分技术, NDJCMT是我们实现的一个日汉机器翻译实验系统, 词的自动切分是日语词素分析、句法及语义分析的基础, 是一项日本语计算机信息处理的基础性研完课题, 它涉及对语言本身的研究。日语和汉语类似, 词及词之间无分隔符, 通常假名、汉字混写, 给词的切分造成了困难。作者根据日语的特点, 提出了一种“ 句节数最少” 词的自动切分方法, 使用语言编程且在一机上获得实现。     

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。