关于网络计划技术中结点时间的求解

指出网络计划技术中求解结点时间是网络时间计算的重点．抓住结点，就可突破网络．在笔者多年实践的基础上向读者推荐一有利于读者学习和使用的简易口诀和简图．最后举例加以说明．     

Ranking terrorists in networks: A sensitivity analysis of Al Qaeda's 9/11 attack

All over the world, intelligence services are collecting data concerning possible terrorist threats. This information is usually transformed into network structures in which the nodes represent the individuals in the data set and the links possible connections between these individuals. Unfortunately, it is nearly impossible to keep track of all individuals in the resulting complex network. Therefore, Lindelauf et al. (2013) introduced a methodology that ranks terrorists in a network. The rankings that result from this methodology can be used as a decision support system to efficiently allocate the scarce surveillance means of intelligence agencies. Moreover, usage of these rankings can improve the quality of surveillance which can in turn lead to prevention of attacks or destabilization of the networks under surveillance.The methodology introduced by Lindelauf et al. (2013) is based on a game theoretic centrality measure, which is innovative in the sense that it takes into account not only the structure of the network but also individual and coalitional characteristics of the members of the network. In this paper we elaborate on this methodology by introducing a new game theoretic centrality measure that better takes into account the operational strength of connected subnetworks.Moreover, we perform a sensitivity analysis on the rankings derived from this new centrality measure for the case of Al Qaeda's 9/11 attack. In this sensitivity analysis we consider firstly the possible additional information available about members of the network, secondly, variations in relational strength and, finally, the absence or presence of a small percentage of links in the network. We also introduce a case specific method to compare the different rankings that result from the sensitivity analysis and show that the new centrality measure is robust to small changes in the data.     

The influence of network structures of Wikipedia discussion pages on the efficiency of WikiProjects

As a platform for discussion and communication, talk pages play an essential role in Wikipedia to facilitate coordination, sharing of information and knowledge resources among Wikipedians. In this work we explore the influence of network structures of these pages on the efficiency of WikiProjects. Project efficiency is measured as the amount of work done by project members in a quarter. The study uses the comments on WikiProject talk pages to construct communication networks. The structural properties of these networks are studied using ideas from social network theory. We develop three hypotheses about how network structures influence project effectiveness and examine the hypotheses using a longitudinal dataset of 362 WikiProjects. The evaluation suggests that an intermediate level of cohesion with a core of influential users dominating network flow improves effectiveness for a WikiProject, and that greater average membership tenure relates to project efficiency in a positive way. We discuss the implications of this analysis for the future management of WikiProjects.     

Gamers’ confidants: Massively Multiplayer Online Game participation and core networks in China

Through a survey of more than 18,000 participants in a Chinese Massively Multiplayer Online Game (MMOG), this study examines how the size and diversity of Chinese gamers’ core networks vary by individuals’ sociodemographic, socioeconomic and game-related characteristics. It represents the first study focusing exclusively on the gamer population and one of the most recent examining personal networks in contemporary China, home to over 560 million Internet users. We found that Chinese gamers have notably larger and more diverse core networks than those of major studies. Coplaying patterns and attachment to the game community contributed significantly to network size and diversity.     

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.     

现代科技与信息化浪潮对大学生的影响及对策

面向 2 1世纪的现代科技与信息化浪潮正向我们走来。我们必须从实际出发 ,充分发挥学生教育和管理工作的作用 ,正视网络工作阵地。教育学生刻苦学习 ,加强修养 ,抓住网络和信息技术革命的历史机遇 ,善于利用计算机与互联网络获取知识和信息 ,从而培养适应信息化浪潮的高素质人才     

网络时代高校思想政治工作的对策研究

随着信息技术的迅速发展,做好网络时代思想政治教育工作的重要性和紧迫性尤为突出,网络既给高校思想政治教育工作带来了机遇,同时又产生了一定的负面影响。做好网络时代高校思想政治工作,观念要创新,思想要转变;要加强对网络的社会理论研究;要建立高校思想政治教育网络;要有针对性地建立、健全校园网主页。     

网络化高职英语第二课堂构建探赜

教育技术的不断更新和进步对传统英语课堂模式产生了巨大的冲击。作为非智育阵地的英语第二课堂成了广大高职英语教师探索全新英语教学模式的试验田。通过网络平台构建多样化的第二课堂活动开展形式,可为学生创造充足的＂加工知识和运用语言＂的时间和机会,提升英语学习效果和质量。     

网络信息产业融合机理与发展策略研究

随着网络信息技术的日益发展,信息技术产业的融合之势愈加明显,各种新兴网络应用服务层出不穷。信息产业融合型的增长模式正在快速改变着社会经济的运行方式。产业融合正在加速产业结构的变动调整,也在推动产业转型升级。产业间的融合渗透促进了新兴业务的活跃爆发,为产业发展带来了一股全新的力量。应当以此为契机,培育新一代产业增长极。首先需要认清产业发展规律,科学地指导产业发展;其次有必要打破体制壁垒,创造良好的政策支持环境;再者,营造开放的发展环境,鼓励企业创新,从而以产业融合有力地推动网络信息产业发展。     

ADSL的原理及应用

阐述了ASDL的工作的原理。并从单机用户接入和局域网用户共享接入的方案与实现 ,介绍了它们的具体要求和操作过程。