改进GAs算法在大规模资源分配问题中的应用

采用改进ＧＡｓ算法建立了求解大规模规划的资源分配模型．针对大规模资源分配问题的具体特点，设计了合适的ＧＡｓ算子，并以实例验证了算法的合理性及有效性．     

改进GAs算濡大规模资源分配问题中的应用

采用改进ＧＡｓ算法建立了求解大规模规划的资源分配模型，针对大规模资源分配问题的具体特点，设计了合适的ＧＡｓ算子，并以实全我验证了处工法的合理性及有效性。     

SuperVGA图形卡的BMP文件的快速显示

本文研究了三种最常用的ＳｕｐｅｒＶＧＡ图形卡ＴＶＧＡ，ＰＶＧＡ，曾氏（Ｔｓｅｎｇ）ＳｕｐｅｒＶＧＡ的分页映射机制及其在高分辨率下的１６色和２５６色ＢＭＰ图像文件的ＶＲＡＭ直接存取显示问题，并提供了ＤＯＳ环境下快速显示ＢＭＰ图像文件的方法。     

连接三大陆的海底光缆

连接三大陆的海底光缆投资财团ＦＬＡＧ有限公司已把一项１２亿美元合同的主要份额授予ＡＴ＆ＴＳｕｂｍａｒｉｎｅＳｙｓｔｅｍｓ公司（ＡＴ＆Ｔ－ＳＳＩ），以敷设世界上最长的海底光缆系统。ＦＬＡＧ是Ｆｉｂｅｒ－ＯＰｔｉｃＬｉｎｋＡｒｏｕｎｄｔｈｅＧｌｏｂｅ的缩...     

AUTOMATIC PLANNING OF ASSEMBLING ORDER FROM ASSEMBLY DRAWING

ＡＵＴＯＭＡＴＩＣＰＬＡＮＮＩＮＧＯＦＡＳＳＥＭＢＬＩＮＧＯＲＤＥＲＦＲＯＭＡＳＳＥＭＢＬＹＤＲＡＷＩＮＧＬｉＳｈｉｎａｎＪｉｎｇＨａｉｄｏｎｇＡｂｓｔｒａｃｔＩｔｉｓｉｍｐｏｒｔａｎｔｔｏｐｌａｎｔｈｅａｓｅｍｂｌｉｎｇｏｒｄｅｒａｕｔｏｍａｔｉｃ...     

关于并行FFT算法

关于并行ＦＦＴ算法魏公毅，蔡中善（中国科学院计算中心）ＯＮＰＡＲＡＬＬＥＬＦＦＴＡＬＧＯＲＩＴＨＭＳ￥ＷｅｉＧｏｎｇ－ｙｉ；ＣａｉＺｈｏｎｇ－ｓｈａｎ（ＣｏｍｐｕｔｉｎｇＣｅｎｔｅｒ．ＡｃａｄｅｍｉａＳｉｎｉｃａ）Ａｂｓｔｒａｃｔ：Ｔｈｅｐａｒａｌｌ...     

SHAPE PRESERVING QUADRATIC SPLINEINTERPOLATION

ＳＨＡＰＥＰＲＥＳＥＲＶＩＮＧＱＵＡＤＲＡＴＩＣＳＰＬＩＮＥＩＮＴＥＲＰＯＬＡＴＩＯＮＣａｉｍｉｎｇＺｈａｎｇ；ＴａｋｅｓｈｉＡｇｕｉ；ＨｉｒｏｓｈｉＮａｇａｈａｓｈｉＳＨＡＰＥＰＲＥＳＥＲＶＩＮＧＱＵＡＤＲＡＴＩＣＳＰＬＩＮＥＩＮＴＥＲＰＯＬＡＴＩ...     

一个组合优化问题的Threshold算法

一个组合优化问题的Ｔｈｒｅｓｈｏｌｄ算法罗宗俊（贵州民族学院）ＡＴＨＲＥＳＨＯＬＤＡＬＧＯＲＩＴＨＭＦＯＲＡＳＰＥＣＩＡＬＣＯＭＢＩＮＡＴＯＲＩＡＬＯＰＴＩＭＩＺＡＴＩＯＮＰＲＯＢＬＥＭ￥ＬｕｏＺｏｎｇｊｕｎ（ＧｕｉｚｈｏｕＮａｔｉｏｎａｌＭｉｎｏｒ...     

一类GASA混合策略及其收敛性研究

结合模拟退火算法（ＳＡ）和遗传算法（ＧＡ）提出一类ＧＡＳＡ混合优化策略，借助于非平稳马氏链理论证明混合算法的全局渐近收敛性，同时实性地分析了算法的优化效率。     

任意长度GFT的W变换算法

任意长度ＧＦＴ的Ｗ变换算法付彬（湖南大学数学系）曾泳泓（国防科技大学七系）Ｗ－ＴＲＡＮＳＦＯＲＭＡＬＧＯＲＩＴＨＭＯＦＱＦＴＷＩＴＨＡＲＢＩＴＲＡＲＹＬＥＮＧＴＨ￥ＦｕＢｉｎ（ＨｕｎａｎＵｎｉｖｅｒｓｉｔｙ，Ｃｈａｎｇｓｈａ，Ｈｕａｎａ）ＺｅｎｇＹｏ...     

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