ORACLE Developer／2000的多媒体开发

ORACLE是一个广泛使用的大型分布式关系数据库系统.其不久前推出的新版本ORACLE Developer/2000极力提倡Client/Server作方式,具有高效率、功能强、网络性好、面向对象编程、支持多媒体等优点,是用于开发大型综合MIS的优秀软件.它主要包括三个集成化应用开发工具:Forms(数据表格生成工具)、Reports(数据统计及报表生成工具)、Graphics(数据图形生成工具).本文以Forms为例介绍如何进行多媒体设计.     

ORACLE INTERMEDIA技术在网站内容管理中的应用研究

使用ORACLE9i数据库平台,将Oracle InterMedia技术和J2EE技术相结合,通过网站内容管理的实现分析了Oracle InterMedia在实现多媒体数据处理方面的技术优势;给出了多媒体数据、特别是图像数据在ORACLE数据库中存储的基本设计方法、以及关系数据库环境下实现结构化与非结构化数据管理的基本思路.     

基于C API的MySQL数据库多线程访问方法

目前,数据库在各行各业中广泛应用.在众多商业数据库软件中,SQL SERVER和ORACLE被较多的使用,因此这两个数据库软件的价格也较昂贵.本文主要介绍MySQL数据库在单线程或多线程程序环境下使用C API访问MySQL数据库方法,并给出了相应代码和分析.该数据库属于开源数据库,具有较高的成熟度,并且对于社区版本可以免费使用,因此对于需要使用C API访问数据库的项目开发,可降低开发成本.     

局域网环境下ORACLE数据库的多用户共享技术研究

该文首先剖析了ORACLE数据库的存贮结构及在局域网环境下多用户共事时产生冲突的原因;然后提出了在不修改ORACLE数据库系统本身的前提下,利用ORACLE数据库的分布功能,解决单用户ORACLE数据库在局域网环境下并发控制和多用户共享技术与策略。这种共享技术已在实际应用系统中得到应用,获得了满意的效果。     

ORACLE数据录入工具(O-DIT)

O-DIT为ORACLE数据库提供了一种方便的数据录入与修改工具。它与ORACLE软件sqlforms不同点在于:它保留了sqlforms的基本功能,但抛开了对不同关系需预先定义form格式的繁琐过程;可直接在任何关系(表)上运行。此外,O-DIT还具有记录批录入和数据唯一化等功能。     

网络教学与网络课程中的教学设计

网络课程是指在网络环境中为学生提供某门学科的教学内容及实施教学活动的总和。它包括按一定教学目标、教学策略组织起来的教学内容和网络支撑环境两部分。从该定义中我们可看出,网络课程作为一个教学系统,从大的方面来看该系统包括教学内容和网络支撑环境这两个要素。因此,对网络课程的设计也应该从教学功能和网络支撑环境这两部分进行。对后者的设计主要应该保证网络课程的有用性与技术性,而对前者的设计则应保证其实现教学性。而这一过程由教学系统设计来完成。     

基于知识点库的数据库学习系统

智能化计算机辅助教学(ICAI)将计算机技术、多媒体技术、Internet技术与传统教育相结合,通过教学模式、教学媒体、学生模型三方面的智能化设计,创造出一种新的教学形式。基于知识点库的数据库智能学习系统正是运用此技术,将其应用于数据库课程的教学开发中,实现本课程的远程、多样化学习等功能。     

网络教学与网络课程中的教学设计

网络课程是指在网络环境中为学生提供某门学科的教学内容及实施教学活动的总和.它包括按一定教学目标、教学策略组织起来的教学内容和网络支撑环境两部分.从该定义中我们可看出,网络课程作为一个教学系统,从大的方面来看该系统包括教学内容和网络支撑环境这两个要素.因此,对网络课程的设计也应该从教学功能和网络支撑环境这两部分进行.对后者的设计主要应该保证网络课程的有用性与技术性,而对前者的设计则应保证其实现教学性.而这一过程由教学系统设计来完成.     

将WORD生成的文件转入ORACLE数据库的方法

WORD FOR WINDOWS中文版是一种深受广大用户欢迎的文字处理软件,它完善的文字处理功能,友好的界面,为用户提供了一个良好的编辑环境,许多用户都用WORD建立文件档案.ORCLE是一个具有强大功能的关系数据库,支持多线索体系结构,具有高可靠性和数据控制权限,易于管理,便于开发,支持汉化,与网络环境集成,支持绝大多数网络协议,能在许多厂商的硬件平台和操作系统平台上运行.目前在关系数据库市场中,ORACLE始终占据最大的市场,许多用户的计算机管理系统都建筑在ORACLE之上.这里介绍一种利用DEVELOPER FORMS的系统编辑器(SYSTEM EDITOR)将WORD文件转入ORACLE方法,和     

化学工艺学CAI平台的开发

介绍了所开发的《化学工艺学》多媒体教学平台。应用Authorware为主要开发工具,制作了“应用平台”、“素材库”、“流程拼图”3个主要模块,阐述了教学平台与教学课件的区别：平台比课件更侧重于教学环境的提供,教师可应用常用文字工具自主设计与编辑板书内容并导入到平台中使用,开放设计提高了平台软件的通用性。另外对软件的基本功能与结构特点作了较为详细的阐述,探讨了多媒体技术应用在该课程教学中的必要性与优势。     

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.     

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.     

法律信息库系统

本文分析了法律数据库的结构和特点，介绍了采用面向对象设计方法和超文本数据库技术开发和实现法律信息库系统将作为重要网络资源之一为不同用户进行法律咨询服务。     

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.     

International Journal of Automation and Computing Table of Contents

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Information for authors

正SCIENCE CHINA Information Sciences(Sci China Inf Sci),cosponsored by the Chinese Academy of Sciences and the National Natural Science Foundation of China,and published by Science China Press,is committed to publishing highquality,original results of both basic and applied research in all areas of information sciences,including computer science and technology;systems science,control science and engineering(published in Issues with odd numbers);information and communication engineering;electronic science and technology(published in Issues with even numbers).Sci China Inf Sci is published monthly in both print and electronic forms.It is indexed by Academic OneFile,Astrophysics Data System(ADS),CSA,Cabells,Current Contents/Engineering,Computing and Technology,DBLP,Digital Mathematics Registry,Earthquake Engineering Abstracts,Engineering Index,Engineered Materials Abstracts,Gale,Google,INSPEC,Journal Citation Reports/Science Edition,Mathematical Reviews,OCLC,ProQuest,SCOPUS,Science Citation Index Expanded,Summon by Serial Solutions,VINITI,Zentralblatt MATH.     

Erratum to: Fast global kernel fuzzy c-means clustering algorithm for consonant/vowel segmentation of speech signal

正Erratum to:J Zhejiang Univ-Sci C(ComputElectron)2014 15(7):551-563doi:10.1631/jzus.C1300320The original version of this article unfortunately contained mistakes.Algorithm 6 should be as follows:Algorithm 6 FGKFCM-F clustering Input:(1)X={x_1,x_2,…,x_N},,x_iR~d,i=1,2,…,N,the dataset;(2)C,1C≤N,the number of clusters;(3)ε0,the stopping criterion;     

Journal of Zhejiang University-SCIENCE C (Computers & Electronics) Total contents

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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.