网络地图的现状与发展趋势

通过广泛查阅国内外相关网站上的网络地图,分析和总结了网络地图的主要特点与发展现状。认为当 前网络地图产品的种类和形式单一,功能参差不齐,设计风格各异,信息被利用的程度不高。在此基础上,论 述了网络地图的若干发展趋势。     

基于Web自动答疑系统的构建

自动答疑系统是网上教学系统的重要组成部分。本文就设计和开发该系统应考虑的主要问题进行了分析 ,并给出了系统模型。     

校园网Web服务器的分布式管理

阐述了如何分布式管理学校的Web服务器,能及时主动地更新网页,充分发挥出校园网络功能的有效方案。     

博士招生报名网络系统的设计与实现

招生报名数据的采集已成为一项繁琐的工作,以往的采集方式已不适应实际工作的需要。Web技术的设计可以很好地解决这个难题。     

对提高高校思想政治网站点击率的几点思考

高校思想政治网站在高校学生的思想教育中发挥着重要的作用 ,当前思想政治网站普遍存在点击率偏低的现象。本文分析了高校思想政治网站的现状 ,指出高校设置思想政治网站应坚持的原则 ,提出了如何提高高校思想政治网站的点击率的对策建议     

基于现代技术的电子采购支持系统设计

本文利用多Agent技术的协同性、整体性、智能性以及Web Services实时性、动态性等技术特点,将Web Services与多Agent技术结合解决电子采购中的问题并给出系统整体解决方法,该方法将采购系统中的各个功能模块设计为单个Agent去实现,通过Agent之间的协作,实现了采购系统整体的高效运作.按照此方案设计的物流采购系统,已用到实际中,效果良好.     

A Tale of Two “Unorganizables”

How should we define “organizability?” I identify here four factors that contribute to a group’s organizability: organizers’ expectations, labor market structures, employers’ actions, and workers’ union sentiments. I briefly discuss how the first three factors correspond with workers’ union sentiments in comparing two divergent occupations: teaching assistants (TAs) and web designers. Workers must choose between conflicting identities in constructing themselves as “organizable” workers. While TAs ultimately framed their identities primarily as employees, web designers still consider themselves unorganizable. I explore similarities and differences between these cases and propose some steps union organizers and web designers could take in unionizing.     

Web2.0环境下协同写作网校的构建研究

针对Web2.0信息环境下写作学习方式的转变,分析了协同写作学习模式的特征与写作网校的应用优势,从写作资源的建构、学习和教学策略、用户模型、用户交互行为模型、网校评价及团队管理等方面阐述了网校的设计模型,最后基于.NET的三层架构模式的阐明了网校的技术框架.     

基于Peti网的WEB服务组合建模及验证

Web服务组合是为了应对日益复杂的业务处理流程,将单一的web服务组合在一起形成一个新的服务。正确的组合web服务是有效应用这些服务的前提,为此研究了利用Petri网组合Web服务的方法和web服务组合模型的验证算法。在对工作流和Web服务组合进行分析对比的基础上,借鉴基于Petri网的工作流建模技术,给出了一种基于Petri网技术的Web服务组合建模方法．采用直观的图形表示Web服务组合模型。结合Web服务组合模型的合理性定义,设计出Web服务组合模型合理性验证算法,利用库所向量和服务集合的表示方法对Web服务组合模型进行分析验证。最后用一个具体实例对Web服务组合建模和验证方法作进一步说明。     

Sociodemographic and Health-Related Risk Factors Among African-American,Caucasian and Hispanic Homeless Men: A Comparative Study

Data from a 1989-1990 cross-sectional survey of homeless adults in California were stratified by ethnicity to examine whether adverse childhood events and adult medical disorders preceding homelessness differed between 269 African-American, 599 Caucasian, 201 foreign-born Hispanic, and 136 native-born Hispanic men. Although African-Americans were overrepresented (21%) compared with their presence in local (3%) and state (7%) populations, within the homeless they were better educated and more likely to have held white collar jobs than Caucasians or Hispanics. In addition, despite being more likely to grow up in poverty, African-Americans reporled lower prevalences of alcohol and drug abuse, overnight psychiatric hospitalizations, placement in foster care, and physical or sexual abuse than Caucasians. Foreign-born Hispanics were the most likely to have low levels of education and job skills, but were least impaired by adult medical disorders. Native-born Hispanics reported lower rates of adverse childhood events, illegal drug use, and psychiatric hospitalizations than Caucasians, but were most likely among the three ethnic groups to suffer from alcohol abuse. The lower prevalences of adverse childhood events, addictive disorders, and psychiatric hospitalizations among homeless African-Americans, despite their higher representation in absolute numbers, suggests that factors such as childhood poverty may play a disproportionate role in homelessness among this ethnic minority group.