网吧管理监控信息系统

以一个大型的网吧管理监控系统的设计实现为例子，全面分析了该系统的信息流数据流，介绍了大型网吧管理监控系统的设计与实现，并对其中关键技术进行了较为深入的探讨。     

科研单位生产管理系统设计

新形势下，科研单位的生产管理日趋重要。对科研单位生产管理现状及模式进行了分析，从系统总体目标、系统基本功能以及系统架构设计几方面提出了生产管理系统的设计思路。     

跳线管理至关重要

对很多系统设计人员来说，他们通常是在系统安装完成后才想起对跳线进行管理，但是研究结果表明跳线管理具有重要的作用。对跳线进行管理将对所需要的配线架空间及地板空间的大小产生影响，并且将简化系统的管理，而这对于成功的系统设计而言是最基本的要求。     

实现MIS系统菜单管理智能化的应用

本文对大型MIS系统用户菜单管理的方法进行了研究，并提出了一套智能化管理PB程序菜单的方法。该方法通过在应用系统中建立菜单数据表来实现系统菜单项的动态显示，同时通过控制用户菜单条级权限和数据窗口级权限来实现对系统用户权限的有效管理。并按照用户群的特点，将角色引入对系统菜单的管理中，有效地解决了大型MIS系统用户权限的管理问题。     

PDM中数据驱动的工作流管理

本文介绍了PDM系统的历史、发展、针对基于文档共享的PDM系统在工作管理方面的不足，提出了一种系统数据库、共享数据库、工作数据库的多库体系结构；通过对工作流管理三要素的分析，提出了数据驱动的工作流管理的思想，构造了一个面向对象的工作流管理数据模型；并对数据驱动的工作流管理进行了详细分析。     

网络安全管理平台研究

首先阐述了目前主流网络安全产品的局限性，由此引入了网络安全管理平台的概念。随后总结归纳出网络安全管理平台的系统组成模块及平台应具备的功能，在此基础上对网络安全管理平台的关键技术——联动互操作技术进行了深入讨论，并对目前国内外典型产品进行了技术分析，最后对网络安全管理平台的发展趋势及现有难点进行了论述并提出了建议。     

审批系统中工作日管理的设计与实现

本文主要针对在企事业单位中对各业务环节有时间限制要求的办公业务系统中如何按工作日进行时间管理进行了探讨，并以环评项目审批系统为例，对时间管理提出了设计与实现的思路，描述了在审批系统中，如何设计和实现对各审世孥节的时间控制.     

电子现金系统的RBAC管理方案

在基于电子现金的网络支付方案中，交易过程相关的多个实体有不同类型的权限和访问标准，如果各自进行安全管理，会使得整个系统的维护协调有很大难度。因此，横跨多个实体的权限管理带来了额外的安全性挑战。分析了基于RBAC的电子现金系统的权限管理策略，通过基于常规角色的授权实现了对电子现金系统内多个实体的访问控制，并设置与常规角色互斥的管理角色实现系统的分布式自行管理．     

浅谈手机短信在系统运行监控管理中的应用

本文介绍了手机短信在计算机系统管理中的应用，研究了利用手机短信进行系统管理的可行性、可操作性，同时给出了如何搭建方便实用的短信系统来管理自己的系统平台的具体方法。     

嵌入式系统中内存管理中间件的研究与实现

通过对内存管理的分析，提出了一个基于嵌入式系统的内存管理的新方案。该方案解决了在嵌入式系统中对有限的内存资源进行统一分配，为上层频繁申请和释放内存块的应用设计了各自独立的内存区。这样，不仅提高了内存管理的效率，而且很大程度地保证了系统的健壮性，加快了对内存问题的定位和解决，让内存管理得到很好优化。     

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.     

Call for Papers The 6^th International Conference on Grid and Cooperative Computing

Recent years have seen rapid advances in various grid-related technologies, middleware, and applications. The GCC conference has become one of the largest scientific events worldwide in grid and cooperative computing. The 6th international conference on grid and cooperative computing (GCC2007) Sponsored by China Computer Federation (CCF),Institute of Computing Technology, Chinese Academy of Sciences (ICT) and Xinjiang University ,and in Cooperation with IEEE Computer Soceity ,is to be held from August 16 to 18, 2007 in Urumchi, Xinjiang, China.     

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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