基于智能代理的电子商务信息服务评价研究

随着计算机技术和信息技术的发展开始应用到诸多领域,现在最为热门的是智能代理技术在电子商务信息服务中的应用。本文首先从理论上阐述了智能代理技术的定义、特点、应用结构以及应用领域,归纳了其在电子商务信息服务中的应用层面和应用架构,然后重点对两个应用智能代理技术来提供信息服务的电子商务网站进行详尽的比较分析和研究,最后评价了电子商务信息服务中引入智能代理技术后出现的相关问题,并提出了部分改进意见。     

CHARACTERIZATION OF EFFICIENT SEQUENTIAL SCHEMES FOR POPULATION GROWTH MODELS1

For population growth models, which include standard processes like Poisson, birth, birth-death, immigration-death, simple epidemic and M/M/1 queue as particular cases, we obtain efficient sequential schemes and characterize all efficiently estimable functions of the parameters by first deriving a sequential version of the information inequality.     

关于县级审计机关深化同级财政预算执行情况审计的几个问题

预算执行审计是财政审计的主要内容 ,而财政审计是国家审计机关永恒的主题。县级审计机关在预算执行审计过程中存在诸多的难点 ,但也有其审计内容的侧重点。为此 ,需要进一步探索县级审计机关深化同级财政预算执行情况审计的新的思路。     

《信息系统分析与设计》课程的教学探索

随着信息技术的发展,信息系统分析、设计、构建、维护和管理的知识与能力已成为高校信息类和管理类专业学生的基本素质要求。本文主要总结分析了《信息系统分析与设计》课程的教学目的、教学内容、教学进度、教学模式,并介绍了在该课程教学改革中采取的措施与方法。     

信息社会背景下的信息自决权

联邦宪法法院在1983年"人口普查案"中创制了"信息自决权",其防御法构想已经无法适应互联网时代信息无处不在的现象. 传统"信息自决权"保护范围过于宽泛,侵犯条件容易满足,这既不符合现实要求,也将导致该领域陷入"法律化陷阱". 改革方案提出保护信息的使用情境,这将导致基本权保护范围大幅缩减. 建议"进化"而非"革命"地重新调整对该基本权的认识,其保护人格权且应当考虑个人"合理的隐私期待",应限制对侵犯的认定. 在私人法律关系中,还应当谨慎运用国家保护义务教义.     

论艺术院系师生同质性互动关系

艺术院系的师生关系与其他院系存在诸多差异,他们之间的互动体现为更多的同质性特点。因此,从同质性互动的视角去理解高校艺术院系和谐师生关系的构建,不仅有利于准确把握互动主体的差异性特点和主体行动的源动力,而且有利于改善影响他们和谐交往的环境,为艺术院系师生和谐关系的构建提供借鉴和参考。当前高等教育内外环境中存在一些影响师生和谐关系的因素,需要从政策、教育方式和教育主体上进行系统的改革才能有效疏解矛盾,提升互动的有效性,营造艺术院系健康、稳定的关系氛围。     

浅谈如何加强施工单位项目部领导班子建设

加强施工单位项目部领导班子建设是对搞好项目管理有着至关重要的作用。本文主要从理论学习、素质提升、加强沟通和坚持民主制度四个方面对加强领导班子建设进行了分析。     

Model Selection Information Criteria in Latent Class Models with Missing Data and Contingency Question

Latent class analysis (LCA) has been found to have important applications in social and behavioral sciences for modeling categorical response variables, and nonresponse is typical when collecting data. In this study, the nonresponse mainly included “contingency questions” and real “missing data.” The primary objective of this research was to evaluate the effects of some potential factors on model selection indices in LCA with nonresponse data.

We simulated missing data with contingency questions and evaluated the accuracy rates of eight information criteria for selecting the correct models. The results showed that the main factors are latent class proportions, conditional probabilities, sample size, the number of items, the missing data rate, and the contingency data rate. Interactions of the conditional probabilities with class proportions, sample size, and the number of items are also significant. From our simulation results, the impact of missing data and contingency questions can be amended by increasing the sample size or the number of items.     

Path to “Stardom” in Globally Distributed Hybrid Teams: An Examination of a Knowledge‐Centered Perspective using Social Network Analysis

Although distributed teams have been researched extensively in information systems and decision science disciplines, a review of the literature suggests that the dominant focus has been on understanding the factors affecting performance at the team level. There has however been an increasing recognition that specific individuals within such teams are often critical to the team's performance. Consequently, existing knowledge about such teams may be enhanced by examining the factors that affect the performance of individual team members. This study attempts to address this need by identifying individuals who emerge as “stars” in globally distributed teams involved in knowledge work such as information systems development (ISD). Specifically, the study takes a knowledge‐centered view in explaining which factors lead to “stardom” in such teams. Further, it adopts a social network approach consistent with the core principles of structural/relational analysis in developing and empirically validating the research model. Data from U.S.–Scandinavia self‐managed “hybrid” teams engaged in systems development were used to deductively test the proposed model. The overall study has several implications for group decision making: (i) the study focuses on stars within distributed teams, who play an important role in shaping group decision making, and emerge as a result of a negotiated/consensual decision making within egalitarian teams; (ii) an examination of emergent stars from the team members’ point of view reflects the collective acceptance and support dimension decision‐making contexts identified in prior literature; (iii) finally, the study suggests that the social network analysis technique using relational data can be a tool for a democratic decision‐making technique within groups.     

云南农业信息化建设研究

当前,信息化已成为农业发展的驱动器、平台和重要工具;信息化的程度成为衡量农业现代化的标志之一。作者详细述评了云南农业信息化的发展成就、存在的问题及原因,在此基础上提出了加强云南农业信息化的若干对策建议。