使用Servlet开发服务器端程序

本文对ＣＧＩ、ＩＳＡＰＩ／ＮＳＡＰＩ及 Ｓｅｒｖｅｌｅｔ进行了比较,简述了利用 Ｓｅｒｖｌｅｔ开发的优点, 最后给出一个开发计数器的范例。     

使用Servlet开发服务器端程序

本文对ＣＧＩ、ＩＳＡＰＩ／ＮＳＡＰＩ及Ｓｅｒｖｅｌｅｔ进行了比较，简述了利用Ｓｅｒｖｌｅｔ开发的优点，最后给出一个开发计数器的范例。     

多平台多数据库的通用CGI程序设计

本文研究Ｊａｖａ、ＪａｖａＳｃｒｉｐｔ、Ｓｅｒｖｌｅｔ、ＩＳＡＰＩ、ＮＳＡＰＩ、ＡｃｔｉｖｅＸ以及ＡＳＰ等Ｗｅｂ技术 缺点,并与ＣＧＩ技术作了比较和分析,提出了使用模板文件方法,设计运行于多种操作系统上并能访问多种数据库的通用ＣＧＩ程序的思路。     

基于Servlet和JDBC技术的数据库Web访问技术

０引言 目前Ｗｅｂ数据库访问处于多种技术并存的阶段,如传统的 ＣＧＩ,Ｊａｖａ Ｓｃｒｉｐｔ,ＮＳＡＰＩ,ＩＳＡＰＩ,ＡＳＰ,Ａｐｐｌｅｔ及 Ｓｅｒｖｌｅｔ等。ＣＧＩ技术具有语言无关性,使用灵活,但由于对每次请求系统均需建立一个进程并重新装载ＣＧＩ脚本,故响应速度较慢,当有大量的并发请求时服务器的性能将受到严重影响,且在安全性、代码重用性方面也没有保证。Ｊａｖａ Ｓｃｒｉｐｔ等客户端技术,功能有限,不适合访问任意数据库。ＮＳＡＰＩ和ＩＳＡＰＩ等服务器端技术,在开发交互式的Ｗｅｂ应用时存在不能跨平台和…     

SHAPE PRESERVING INTERPOLATION USING PIECEWISE CUBIC

ＳＨＡＰＥＰＲＥＳＥＲＶＩＮＧＩＮＴＥＲＰＯＬＡＴＩＯＮＵＳＩＮＧＰＩＥＣＥＷＩＳＥＣＵＢＩＣＦａｎｇＫｕｉ；ＴａｎＪｉａｎｒｏｎｇＳＭＯＯＴＨＳＵＲＦＡＣＥＩＮＴＥＲＰＯＬＡＴＩＯＮＯＶＥＲＡＲＢＩＴＲＡＲＹＴＲＩＡＮＧＵＬＡＴＩＯＮＳＢＹＳＵＢＤ...     

基于SQL Server数据库管理系统客户端时间的校正

本文运用ＳＱＬ Ｓｅｒｖｅｒ的存储过程,通过３２位ＯＤＢＣ及ＶＢ的ＲＤＯ和Ｗｉｎｄｏｗｓ ＡＰＩ函数,以软件的方式实现了基于ＳＱＬ Ｓｅｒｖｅｒ的局限域网数据库管理系统（ＬＡＮ ＤＢＭＳ）客户端的时间自动校正,从而保证了服务器端与客户机端时间上的统一。     

ISAPI及其访问机制分析

ＩＳＡＰＩ作为一种构造Ｉｎｔｅｒｎｅｔ（服务器程序的机制已得到了广泛的应用，本文通过程序实例分析了ＩＳＡＰＩ的基本原理和访问机制，并指出了ＩＳＡＰＩ的优越性。     

《深海争霸》上手指南

《深海争霸》围绕着ＷＨＩＴＥ ＳＨＡＲＫＳ、ＢＬＡＣＫ ＯＣＴＯＰＩ、 ＳＩＬＩＣＯＮＳ三个种族展开，三个不同文化的种族为争夺水中霸权而战，跟暴雪的《星际争霸》十分相似。 首先介绍游戏的界面：上方为资源状况，内容因所选种族而异， ＷＨＩＴＥ ＳＨＡＲＫＳ，ＢＬＡＣＫ ＯＣＴＯＰＩ都为人类，需要氧气（Ｏ２），而且科研与贸易都要钱（ＧＯＬＤ），而ＳＩＬＩ－ＣＯＮＳ就不需要氧气，代替为能源的需要，而且它们也不认识什么是钱：）。共同的资源是绿色代表的ＣＯＲＩＵＭ（真菌）和黑色代表的ＭＥＴＡＬ（矿物）。下方为命…     

用C＋＋Builder开发ISAPI扩展应用程序

本文介绍了ＩＳＡＰＩ扩展的工作方式,以及怎样用Ｃ＋＋Ｂｕｉｌｄｅｒ开发一个ＩＳＡＰＩ扩展应用程序。     

利用ISAPI开发Web应用

本文比较了ＩＳＡＰＩ与ＣＧＩ访问数据库的特点，并介绍了利用微软的ＩＩＳ提供的ＩＳＡＰＩ接口开发Ｗｅｂ应用的一般方法。     

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