整治“非法操作”

我用自己的电脑写文章、听歌曲、上网，常常在不经意间，电脑屏幕跳出来一个“非法操作”框，“XX程序执行了非法操作，即将关闭。”于是，写好一半的文章，得停下，正听得起劲的歌曲，不能再听了，上网呢，免了吧。而常常，碰到这种情况，我是无可奈何的，能处理就处理一下，不能处理，就只有投降了。那种感觉，真是糟透了。懊恼、烦燥、愤怒，可是又无可奈何。有问题就要解决，痛定思痛，我请教了一些朋友，又翻了翻书，终于明白了其中的道理，其实，“非法操作”这种情况并不可怕，只要稍加处理是完全可以避免的。造成“非法操作”的原…     

百变家居

入住新家后，新家具，新环境，新电器，一切都是新的，让人很是惬意了一阵子。但是住了一段时间后，却又觉得腻了，一成不变的摆设，一如既往的风格，开始了审美疲劳……[编者按]     

钢材退火炉的程序控制

本文简要介绍了钢材的退火工艺，在此基础上采用智能调节仪实现了钢材退火炉炉温的程序控制，克服了退火炉内温度不均匀的现象，改善了控制精度和自动化程度，提高了产品质量和生产率，最后本文简单介绍了电磁兼容的有关概念，分析了本文中存在的电磁干扰并给出了解决方案，实践证明，该方法非常有效。     

基于知识表达的参数化尺寸标注机理研究与实现

本文研究了一种全新的尺寸标注机理，设计了通用，完整，较高层次的尺寸注模型，两个方面取得较大进展，其一，在交互标注过程中，借助于知识表达，自动得到了尺寸注类型，使尺寸菜单减少到一层，实现了智能化尺寸标注，其二，当图形发生拓扑不变的变化时，尺寸标注自动生成，实现了参数化的尺寸标注，尺寸标注的各种修改的尺寸标注模型的支持之下，并可随时进行，实现了尺寸数字对图线的自动裁剪，图样符合国家标准的规定。     

磁悬浮球实验系统的模糊控制仿真

该文介绍磁悬浮球实验系统的结构与工作原理，根据模糊控制技术，设计了一个二维模糊控制器，在实验的基础上，确定了输入输出变量的范围，并对变量进行了模糊化，根据小球的物理运动规律，建立了模糊控制规则，在Matlab/Simulink环境下进行了仿真，并进行了实际控制实验，实验表明，所设计的模糊控制器具有很强的鲁棒性。     

分布式多媒体教学考试系统的设计与实现

阐述了分布式多媒体教学考试系统的产生背景，对其中非常重要的考虑系统进行了详细地剖析，讨论了分布式系统，多媒体系统，面向对象技术，VC 6．0,WinSock技术，ADO等系统的实现的核心技术，阐述了分布式分布式多媒体教学考试系统的需求分析，功能划分，然后从试题类，ADO、Windows等几个角度讲述了分布式多媒体教学考试的详细设计与实现，总结了全文。     

MP3里的“小说连播”

早在学生时代，小菜就痴迷于抱着收音机定时收听中央台的小说连播，工作后却不得不忍痛割爱——没时间啊，连播的时候自己在工作，休息了，却早过了连播时间，真真郁闷死了。某天，小菜偶尔打开了中央人民广播电台的网站，意外发现，网站居然提供了小说连播的音频下载，想到自己新买的MP3，不由一阵窃喜。     

满足原子性和公平匿名性的AFAP协议研究

在分析电子交易的原子性和公平匿名性基础上，应用两阶段提交协议思想，实现了电子交易的原子性，改进了Brands教授提出的公平盲签名协议，不仅实现了交易中的匿名性，还提供了非法支付的所有者追踪和货币追踪，实现了公平匿名性，并提出了一个可同时实现原子的公平匿名的电子交易协议，给出了协议的五个子协议，详细描述了各子协议的执行过程，并非形式化地证明了协议原子性和公平匿名性，保证了公平电子交易和私密性。     

分布式工业控制计算机局域网的研究与实现

本文研究了一种分级分布式工业控制计算机局域网，提出了标准转换器．实现了硬件联网；根据国际标准制定了此网的通信协议，设计了所有通讯软件，实现了软件联网，成功地完成了一台IBM-PC386与三台STDBUS工业控制机的联网，构成了实时性好，可靠性高，价格较低的二级分布式工业控制计算机局域网络，此网不仅适用于化工生产，而且也适用其它生产过程控制，具有广泛的推广价值。     

交互式译系统IHSMTS的多策略翻译引擎

IHSMTS采用了多策略的翻译方式，融合了RBMT，EBMT和机助人译等思想，提高了自动构造文的质量，并实现了良好的经验记忆和知识自动获取，同时，采用智能人的机交互技术，构建了一个机组翻译平台，文章介绍了IHSMTS的翻译处理原理和系统关键技术的实现方法。     

煤矿井下安全监控分站的设计及其仿真实现

为了设计一种具有低成本、低功耗、易操作、功能强且可靠性高的煤矿井下安全分站,针对煤矿安全生产实际,文章提出了采用MCS-51系列单片机为核心、具有CAN总线通信接口的煤矿井下安全监控分站的设计方案;首先给出煤矿井下安全监控分站的整体构架设计,然后着重阐述模拟量输入信号处理系统的设计过程,最后说明单片机最小系统及其键盘、显示、报警、通信等各个组成部分的设计;为验证设计方案的可行性与有效性,使用Proteus软件对设计内容进行仿真验证,设计的煤矿井下安全监控分站具有瓦斯、温度等模拟量参数超标报警功能和电机开停、风门开闭等开关量指示功能;仿真结果表明:设计的煤矿井下安全监控分站具有一定的实际应用价值.     

View-based model-driven architecture for enhancing maintainability of data access services

In modern service-oriented architectures, database access is done by a special type of services, the so-called data access services (DAS). Though, particularly in data-intensive applications, using and developing DAS are very common today, the link between the DAS and their implementation, e.g. a layer of data access objects (DAOs) encapsulating the database queries, still is not sufficiently elaborated, yet. As a result, as the number of DAS grows, finding the desired DAS for reuse and/or associated documentation can become an impossible task. In this paper we focus on bridging this gap between the DAS and their implementation by presenting a view-based, model-driven data access architecture (VMDA) managing models of the DAS, DAOs and database queries in a queryable manner. Our models support tailored views of different stakeholders and are scalable with all types of DAS implementations. In this paper we show that our view-based and model driven architecture approach can enhance software development productivity and maintainability by improving DAS documentation. Moreover, our VMDA opens a wide range of applications such as evaluating DAS usage for DAS performance optimization. Furthermore, we provide tool support and illustrate the applicability of our VMDA in a large-scale case study. Finally, we quantitatively prove that our approach performs with acceptable response times.     

A pragmatic multi-method investigation of discrepant technological events: Coping,attributions, and ‘accidental’ learning

Discrepant technological events or situations that entail a problem, a misunderstanding or a difficulty with the Information Technology (IT) being employed, are common in the workplace, and can lead to frustration and avoidance behaviors. Little is known, however, about how individuals cope with these events. This paper examines these events by using a multi-method pragmatic approach informed by coping theory. The results of two studies – a critical incident study and an experiment – serve to build and test, respectively, a theoretical model that posits that individuals use a variety of strategies when dealing with these events: they experience negative emotions, make external attributions, and adopt engagement coping strategies directed at solving the event, eventually switching to a disengagement coping strategy when they feel they have no control over the situation. Furthermore, users’ efforts may result in ‘accidental’ learning as they try to overcome the discrepant IT events through engagement coping. The paper ends with a discussion of the results in light of existing literature, future opportunities for research, and implications for practice.     

The Distributed Time-Triggered Simulation Scheme: Core Principles and Supporting Execution Engine

Distributed real-time simulation is a young technology field but its practice is under increasing demands. In recent years the author and his collaborators have been establishing a new approach called the distributed time-triggered simulation (DTS) scheme which is conceptually simple and easy to use but widely applicable. The concept was initiated in the course of developing a new-generation object-oriented real-time programming scheme called the time-triggered message-triggered object (TMO) programming scheme. Some fundamental issues inherent in distributed real-time simulation that were learned during recent experimental studies are discussed along with some approaches for resolving the issues. An execution engine developed to support both the TMOs engaged in control computation and the TMOs engaged in DTS is also discussed along with its possible extensions that will enable significantly larger-scale DTSs.     

Software-Konfigurationsmanagement in großen Softwareprojekten

Zusammenfassung Mit zunehmender Größe der Softwaresysteme verschärfen sich die für die Software-Herstellung typischen Probleme: Beherrschen großer Objektmengen, Erhalten der Systemkonsistenz, Kontrolle der ständigen Änderungseinflüsse und Gewährleisten einer langen Lebensdauer. Die Disziplin Konfigurationsmanagement bildet den methodischen Ansatz, diese Probleme besser zu beherrschen. Software-Konfigurationsmanagement faßt die Herstellung von Softwaresystemen als eine Abfolge von kontrollierten Änderungen an gesicherten Zwischen- und Endergebnissen auf. Dargestellt werden die Objekte und Funktionen des Software-Konfigurationsmanagements sowie die hierfür in großen Software-Projekten benötigten Methoden, Instanzen und Hilfsmittel.     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and     

Editorial:Brain-machine interface(BMI) and cyborg intelligence

正Brain-machine interfaces(BMIs)aim at building a direct communication pathway between the brain and an external device,and represent an area of research where significant progress has been made during the past decade.Based on BMIs,mind information can be read out by neural signals to control     

Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate     

SCIENCE CHINA Information Sciences SUBJECT INDEX TO VOLUME 57(2014)

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Information for Authors

正http://www.zju.edu.cn/jzus http://www.springerlink.com Aim The Journals of Zhejiang University-SCIENCE(A/B/C)are edited by the international board of distinguished Chinese and foreign scientists,and are aimed to present the latest developments and achievements in scientific research in China and overseas to the world’s scientific circles,especially to stimulate