How do different types of intragroup conflict affect group potency in virtual compared with face-to-face teams? A longitudinal study

The number of organizations using teamwork is increasing. In this context, group potency has emerged as a key construct in group research. Moreover, in the last decades, information and communication technologies (ICT) have allowed organizations to form virtual teams. Consequently, a considerable amount of research has analysed the functioning of virtual teams. We focus on intragroup conflict as a relevant antecedent of potency in computer-mediated communication groups. Specifically, the aim of this research is to examine the role of ICT in the relationship between intragroup conflict and group potency in a longitudinal study. A laboratory experiment was carried out comparing 44 groups working in two communication media (face-to-face and computer-mediated communication). The groups developed a project over a one-month period. The results show that communication media play a moderator role between intragroup conflict (relationship and task conflict) and group potency. Implications of these results are discussed.     

The influence of dispositions and Internet motivation on online communication satisfaction and relationship closeness

Guided by the Uses and Gratifications (U&G) perspective, this study examined the influence of unwillingness to communicate, loneliness, Internet-use motives, and Internet (CMC) use and interaction (amount and types of use and self-disclosure) in online communication satisfaction and online relationship closeness. There were 261 participants in this study. Overall, participants who perceived their face-to-face communication to be rewarding, used CMC for self-fulfillment, and disclosed their personal feelings to others tended to feel close to their online partners. Moreover, those who used the Internet for purposes of self-fulfillment and affection and intended to disclose their feelings to others felt satisfied with their online communication. The associations among the constructs extend our knowledge of the U&G theoretical model, how and why people communicate interpersonally in CMC settings, and the influence of individual differences on CMC for relational communication.     

浅谈网络信息传播对教育的影响

网络信息时代的传播和通信科技迅猛发展使各类新媒介不断涌现、分裂和整合,具有自主、个性、互动等特征的网络个人传播实现了大众化发展、多元化应用的内在趋势,随着传播技术的日臻完善,人际传播现在越来越借助于现代传播媒介进行沟通,探究网络个人传播这一新传播方式的内在特性,并为其寻找可供借鉴的发展之路。     

改进NS2对局域网分布式系统在线仿真的实现

目前大多数仿真系统采用流量发生器等模拟l离散事件的发生,为了充分模拟网络环境中分布式系统各子系统的并发运行和彼此之间依据算法的实时交互,设有虚拟局域网VLAN的IEEE802.1Q协议。提出一种改进NS2模拟局域网分布式系统实际运行的在线仿真的集成方法,将各分布式应用对象移植为NS2的C++扩展对象,执行实际算法,构造一个模拟中心调度对象,管理各分布式对象的并发运行、转发各分布式对象之间的消息交给NS2以模拟其网络延迟,与领域仿真软件交换数据等。对NS2中共享式以太网协议模块改造,添加VLAN802.1Q协议模块,分别实现对交换式局域网和多播报文的模拟。变电站自动化系统的通信网络仿真实验结果,验证了在线仿真方法是有效的、所扩展的NS2模块是正确的。     

基于分布式中间件ICE的应用架构研究

在分布式系统中,分布式平台之间的差异增加了开发的复杂性.基于一种轻量级的分布式中间件ICE,提出了在分布式异构环境中的一般架构模型.该模型可以降低模块之间的耦合度,解决服务器负载过大的问题.将该模型应用到网络安全管理系统中,解决了网络安全管理系统中平台差异问题和服务器负载均衡问题.     

S7—200系列PLC与监控计算机通讯的几种实现方法

针对控制系统中上位机与S7—200系列PLC通讯的实际问题,总结了几种监控计算机与S7—200系列PLC实现数据通讯的方法。实际应用表明,这些方法分别在不同的控制环境中能较好地解决它们之间的数据通讯问题。     

基于无线通信的高速饮料生产线远程监控系统研究

本文研究了一种基于无线通信技术的高速饮料生产线远程监控系统。概述了该系统对安全生产监控的积极意义,给出了该系统的整体设计方案及功能特点,提出了一种无线通信方案,开发了通信模块,设计了PLC与PC的通信接口,并在VB平台上开发了监控系统软件,实现了该系统的功能。     

DLMS/COSEM电能表通信协议在自动抄表系统中的应用

在各种电能表通信协议标准中,DLMS/COSEM电能表通信协议是适用于不同制造厂家和仪表型号,并能满足电能表全部应用的具有互操作性的通信协议。本文介绍了DLMS/COSEM电能表通信协议的互操作性和兼容性,并介绍了其在自动抄表系统中的实际应用。     

无线传感器网络中的隐私保护研究

随着无线传感器网络的广泛应用,安全问题发生变化,通信安全成为重要的一部分,隐私保护日渐重要。首先分析了无线传感器网络的通信安全特点、通信安全的需求、面临的保密性威胁及攻击模型。最后,基于对无线传感器网络隐私保护问题的分析和评述,指出了今后该领域的研究方向。