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Paul McKevitt 《Information & Communications Technology Law》1993,2(1):35-52
One of the growing areas of computer technology is electronic data interchange (EDI). Electronic data interchange is the electronic transfer of data from one agent to another. One of the most important problems with computer programs today is that they are not reliable. The reason for this is quite simple. Computer programs are built to solve particular problems and these problems can be quite large. By large we mean having lots of constraints, cases and rules as to what constitutes the problem. Real‐world problems are so complex that it is hard to be sure that when a program has been built it will never fail for an input that has not been taken into account. Hence, reliability of computer programs for EDI has serious implications because if a program fails to work then this can lead to problems with security. If the field of computer science concentrates on better techniques for increasing computer reliability then we will be able to build more reliable and secure programs for EDI. 相似文献
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《Computers & Education》1999,32(3):221-238
This article is a report of the use of an electronic network by trainee teachers in a `school-based' initial teacher education course to facilitate discussion between participants. A rational for incorporating computer conferencing, drawing on teachers' knowledge and how this might be acquired, is presented. The potential of electronic networks for sharing ideas about teaching, and encouraging `reflective practice', is examined. Features of one application of electronic working are briefly described, and data are reported on the extent to which the potential of the medium was realised with the trainee teachers in a specific case. Deeply held concerns about computer conferencing by these trainees indicates that participation in a `virtual community' cannot be assumed when computer conferencing is introduced into initial teacher education courses. 相似文献
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介绍了一种为电子经纬仪开发利用AC4-83数字I/O板的并行数据通讯方法和相应的控制软件,使得PC微机能够通过设计的并行数据通讯电路与电子经纬仪进行实时通讯。讨论了并行通讯方法的硬件原理、工作过程和通讯软件的设计及例程,利用这一通讯方法可以达到利用PC微机对电子经纬仪测得的水平和垂直角度进行自动采集和处理分析的目的。 相似文献
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介绍了一种适用于电子天平的辅助检定系统设计方法,系统具备辅助检定、数据计算、文档生成、台账管理等功能,在系统辅助下,只需根据提示放置相应砝码即可完成检定工作,大幅提高了检定工作的作业效率,设计方法通用性强,具有良好的推广应用前景。 相似文献
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陈俊英 《自动化与仪器仪表》2012,(3):63-65
气象数据如风向、风速及温湿度等,对于安全生产有很高的参考意义,由于市场上的自动气象站价格很高,故本文设计了一款低成本简易型电子气象站,通过单片机采集气象数据,并通过串口转送至PC机,PC机端采用LabVIEW接收数据并显示. 相似文献
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QU Li-rong 《数字社区&智能家居》2008,(22)
虚拟技术是利用计算机模拟仿真真实过程的一项实用技术,虚拟技术的发展使电子线路的分析设计过程得以在计算机上轻松、准确、快捷地完成。其优点是方便的更改电路和元件参数,更快更好的了解电子电路的各种性质,缩短设计电路的时间。利用计算机的电子设计自动化,促进《模拟电子线路》教学的现代化是一种新的教学方法,也是一种培养学生实际动手能力的有效工具,更是电子类课程教学的发展方向。本文介绍了EWB虚拟技术在《模拟电子线路》课程教学中的应用,基于Multisim进行电子线路设计仿真,让抽象的理论及时得到检验,加深对理论的理解和记忆,作为教学的补充。 相似文献
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曲丽荣 《数字社区&智能家居》2008,(8):735-737
虚拟技术是利用计算机模拟仿真真实过程的一项实用技术,虚拟技术的发展使电子线路的分析设计过程得以在计算机上轻松、准确、快捷地完成。其优点是方便的更改电路和元件参数,更快更好的了解电子电路的各种性质,缩短设计电路的时间。利用计算机的电子设计自动化,促进《模拟电子线路》教学的现代化是一种新的教学方法,也是一种培养学生实际动手能力的有效工具,更是电子类课程教学的发展方向。本文介绍了EWB虚拟技术在《模拟电子线路》课程教学中的应用,基于Multisim进行电子线路设计仿真,让抽象的理论及时得到检验,加深对理论的理解和记忆,作为教学的补充。 相似文献
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近些年,计算机技术飞速发展,计算机网络犯罪也在暗流涌动,比如曾经备受关注的网络诈骗徐玉玉案,其对社会治安、网络空间安全等都造成了极其不良的影响.文章介绍计算机网络犯罪的概念和特点;其次,介绍计算机网络犯罪中的电子数据基本概念,阐述侦查人员在对案件进行电子数据取证时遵循的基本原则以及一些特殊要求;然后,以路由器为例介绍对... 相似文献
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Self-report estimates of frequency and duration of computer use are used extensively in research related to computer and information systems acceptance. Despite concerns that self-report estimates are inferior to computer log data there is a paucity of research investigating the relationship between self-report and log data measures of computer use. The present study compared self-report estimates and six months of electronic log data for 62 health care workers using a new Community Services Information System. There were moderate to strong correlations between the self-report and electronic log estimates of frequency and duration of system use. Self-report estimates were relatively accurate in that they were quite similar in magnitude to log data values. The merits of combinations of frequency and duration data (composites) were also assessed. 相似文献
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针对电子电路协同设计中的设计数据共享提出解决方案。文章以微机上电子CAD工具Protel和工作站电子CAD工具Mentor为例,分析底层数据文件结构与格式,讨论关于原理图级器件仿真模型对应方法以及印刷电路板级物理连接关系计算方法,给出原理图、网表和PCB三个层次数据交换的算法软件实现。 相似文献
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本文介绍了80386汉化Xenix环境下用C语言开发的电子字典软件原型的设计及实现思想。给出了电子字典的形式化描述,详细讨论了声音,文字字符等数据的存储及编码技术。最后,提出了电子字典中采纳的几个高效查询算法。 相似文献
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随着电子血压计的家庭化,为了对人体的血压值进行长时间的动态监测,我们需将测量的血压值存储起来以便观察分析.但目前市场上的电子血压计大多都没有接口可以与计算机直接进行数据传输.介绍了一种应用于家用电子血压计与计算机进行数据传输的接口方案,采用AVR单片机与9针RS-232串口,实现了血压数据的无失真传输.分析了血压测量方... 相似文献
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曲鹏友 《自动化技术与应用》2006,25(8):59-62
当前对新型的电子测量仪器的设计应具备能自动测试系统工作的能力.GPIB标准接口就是为此目的而设计的.本文以小信号直流电压的数据采集为例,着重介绍了接口板与计算机之间以IEEE-488进行数据传输以及接口板直接对其他智能仪器程控的硬件和软件的实现. 相似文献
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支持计算机取证的电子证据安全保护策略 总被引:2,自引:0,他引:2
计算机数据具有脆弱性,因此必须在计算机取证过程中对电子证据进行安全保护使其具有证据能力。该文提出一种基于SHA-1, RSA和Rabin容错算法实现的电子证据安全保护策略以支持计算机取证,对原始记录进行实时、安全的转移并分散存储,保证数据的真实性和完整性,能通过快速检测和还原对其进行有效性鉴定。 相似文献
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This paper describes an electronic database for handling the interactions between active principles administered to various patients. The computer used is a personal computer with adequate mass memory, software, and data obtained from pharmacological sources. The main features of this work are: 'all-patient' orientation, a special sentence-coding system, suitability for most existing catalogues of drug interactions, drug-keyed and cause-and-effect-keyed accesses, menu-driven interaction between the user (a physician) and the system, implementation on a personal computer (as available in most hospital departments) and activation from other programs. 相似文献