系统的环境系统

引入了系统的环境系统、系统的全环境系统、系统集的环境系统和多层系统的环境系统等概念，并对它们间的同态、同构、范畴和不变性等有关问题进行了讨论，得到了相应的结果，指出了这些概念和结果在自然、科学、社会、经济等方面的应用。     

入侵检测系统

入侵检别系统是网络安全系统的重要组成部分之一，本文介绍了入侵检测系统的概念、基本原理和分类，讨论了入侵检测系统面临的挑战，展望了这项技术的未来。     

分布式虚拟现实系统

分布式虚拟现实(DVR)是计算机和信息科学的交叉和融合，被认为是21世纪信息科学领域最有发展前途的技术，目前已得到国内外学术界的普遍关注，本文介绍了分布式虚拟现实系统的概念、发展过程及应用领域，分析了其结构模型，并提出了需进一步研究的问题。     

以系统科研促系统课改

去年上半年是２１世纪基础教育课程教材改革实验在我区开展的第二学期。区教委明确提出：我们要以科研的态度，以课题的形式来参与本次实验。我校根据课改的形势和我校的现状提出了学校的工作目标和基本策略，概括归纳为“一、二、三、四”，即一个目标：团结建校、质量立校、科研兴校，以系统科研促系统课改，各项工作不断争取更好；二项改进：校园育人环境和设施向人文化、现代化、高标准方向改进，两支队伍向不断优化、科研型方向改进；三大工程：强魂工程聚合力、师能工程夯根基、学力（指学生的综合能力）工程促发展；四个重点：把承担…     

嵌入式系统教学探讨

针对嵌入式系统教学的特点，分析了目前国内和我校在嵌入式系统方面的教学现状，结合教学和项目开发经验，提出了嵌入式系统教学的课程体系设置，包括系统结构、硬件平台、操作系统、课程教学内容、实验教学内容等，并提出了教学改革方面的一些思路。     

嵌入式系统综述

嵌入式系统是当前信息技术应用的热点，本文综述了嵌入式系统的基本概念、组成框架及关键技术，并对嵌入式系统的发展前景作了展望。     

个人CAI系统

介绍了个人CAI系统的构成，声卡、视频卡的安装，多媒体写作工具应具备的功能。     

计算机会计信息系统与手工会计系统的比较

本文阐述了现阶段计算机会计信息系统与手工会计的异同点，特别指出计算机会计信息系统的明显优势推动了经济的发展，随着计算机网络化、智能化的发展，必将更加深化扣完善。     

浅谈细水雾灭火系统

介绍了细水雾灭火系统的基本原理，简要地说明了各种细水雾灭火系统的构成及其应用，并结合有关试验成果，对其灭火效果进行总结和分析。介绍了细水雾灭火系统的分类、细水雾灭火系统的适用火灾类型及应用场所并与哈龙、二氧化碳、自动喷水灭火系统进行了比较。     

计算机考试系统

本文系统的介绍了计算机考试系统的定义、目的、功能。阐述了本系统的可行性、必要性以及与传统的工作方法相比较的优越性。具体介绍了本系统的设计过程和它的实用功能。本系统使用的开发工具为PowerBuilder6．0，开发平台为Windows4．0，数据库为MicrosoftACCESS，与数据库连结采用ODBC的专用接口。计算机考试系统主要由考生考试模块和管理员模块两大部分组成。     

浅述电子邮件系统

从电子邮件的发展、架构、运作原理及应用上系统地阐述了这一互联网的基本应用，介绍建构及维护E-mail服务器中可能遇到的备种问题，并提出了若干解决办法。     

现代加密技术的原理及应用

随着计算机网络技术的发展,信息安全成为当今网络社会的突出问题.信息安全的核心问题是密码技术.现代计算机加密技术就是适应网络信息安全而产生的,它为我们在网络上进行诸如文件传输、电子邮件往来和合同文本的签署等活动提供了安全保障.     

用于邮件自动分类的聚类剪辑算法设计

垃圾邮件给网络及用户造成了极大的危害,严重影响人们的工作、生活和学习.文章分析传统KNN技术在进行邮件分类中存在的问题,提出用聚类技术解决问题;进一步分析一般聚类算法存在的时间性能较低特点,设计改进算法提高算法的时间性能.     

Comparing response rates in e-mail and paper surveys: A meta-analysis

This meta-analysis examined 35 study results within last 10 years that directly compared the response rates of e-mail versus mail surveys. Individual studies reported inconsistent findings concerning the response rate difference between e-mail and mail surveys, but e-mail surveys generally have lower response rate (about 20% lower on the average) than mail surveys. Two study features (population type and follow-up reminders) could account for some variation in the e-mail and mail survey response rate differences across the studies. For the studies involving college populations, the response rate difference between e-mail and mail surveys was much smaller, or even negligible, suggesting that e-mail survey is reasonably comparable with mail survey for college populations. The finding about follow-up reminder as a statistically significant study feature turns out to be somewhat an anomaly. Other study features (i.e., article type, random assignment of survey respondents into e-mail and mail survey modes, and use of incentives) did not prove to be statistically useful in accounting for the variation of response rate differences between mail and e-mail surveys. The findings here suggest that, in this age of internet technology, mail survey is still superior to e-mail survey in terms of obtaining higher response rate.     

Internet/E-mail Usage and Well-Being Among 65–84 Year Olds in New Zealand: Policy Implications

Research indicates that significant groups of older people are using Internet/e-mail technology. Using data from a 2007 random sample of 1,680 New Zealanders aged 65–84, predictors of Internet/e-mail usage and the impact of usage on well-being were investigated. Gender, age, education, household composition, income, and work were significant predictors of Internet/e-mail usage. Significant positive relationships were also found between Internet/e-mail usage, self-rated health, leisure/recreation participation and leadership, and well-being. These research findings suggest that public policies should encourage older people to adopt Internet/e-mail technology to ensure continued participation, learning, and well-being throughout later years.     

电子邮件在大学英语写作教学中的作用研究

电子邮件写作教学是英语写作教学的一种方式。本文采用实证研究的方法,通过教学实验,考察了电子邮件写作教学对学生英语写作水平和非语言能力的影响。结果表明：电子邮件写作教学对提高学生的英语写作水平具有积极作用;电子邮件写作教学有助于培养学生的学习动机、自信心、自主学习能力、跨文化意识等非语言能力。     

A comparative analysis of e-mail and face-to-face communication in an educational environment

Electronic mail (e-mail) is an extremely important medium for Internet-based education. Due to its unique characteristics, there is reason to be concerned that students do not put appropriate care into writing messages that are sent via e-mail. This has significant implications for the effectiveness of online learning environments. This paper describes an empirical research project to investigate the amount of thought students put into e-mail communication versus traditional face-to-face communication. A survey was administered to 596 undergraduates. The results of this survey indicate that students put significantly more thought into e-mail communication with the instructor and groups of peers than they do for equivalent face-to-face communication. At the same time, students tend to put about the same amount of thought into e-mail compared to verbal communication with individual peers. Finally, the research uncovered some interesting patterns concerning student gender and technology comfort as predictors of thought put into e-mail communication.     

Rough Set在垃圾邮件过滤技术中的应用

垃圾邮件是Internet上面临急待解决的问题.Rough集理论是处理模糊和不精确数据的新型工具,能提供描述正常模型的最小预测规则集.重点阐述了Rough set在垃圾邮件过滤中的应用,并对大量数据进行了实验对比,试验验证了Rough set在垃圾邮件过滤技术上的可行性和可靠性.     

Electronic Mail as a Pedagogical Delivery System: An Analysis of the Learning of Argumentation

The article reports a study in which 31 volunteered Finnish undergraduate students practiced argumentation by electronic mail (e-mail). Generally argumentation refers to grounding of stated claims. The study seeks to clarify the feasibility of e-mail study environment for practicing argumentation and compares a tutor-led seminar mode and self-directed student discussion mode, using e-mail as the study tool in both modes. The data consisted of the students' 441 e-mail messages. The content analysis of the data focused on the level and development of argumentation and counterargumentation in the messages. The results indicated that the messages' level of argumentation improved during the experiment and was higher in those messages that included counterargumentation targeted against others' standpoints. In addition, the students engaged in the student-led mode of e-mail study presented more and higher-level counterargumentation compared to the students engaged in the tutor-led mode. The results suggested that e-mail is a feasible study tool in practicing academic argumentation and that, given that this is an important aim in higher education, students' self-direction and debating should be encouraged.     

电子邮件安全问题探析

电子邮件传输系统是现代网络通信最广泛的传输工具之一,也是在异构环境下唯一跨平台的、通用的分布系统。随着电子邮件的爆炸式增长,其安全问题也日益突出。病毒、木马、垃圾邮件、钓鱼软件等一系列不安全的因素的存在,使得使用电子邮件面临着被攻击或者被欺骗等各种安全风险。文章将探讨提高电子邮件安全的两种主要安全技术——防火墙和PGP。