网络传输的方向是群对群传输研究

网络传输可以分为四种形态：“一对一”,“多对一”,“一对多”和“多对多”。“一对一”是问题分解的终极,而“多对多”则是效率所追求的终极。由四种形态之间转变展开讨论,为了提高效率,网络传输应该转向“多对多”。群对群是“多对多”的另一种传输方式,或者说,是强调分群的“多对多”传输。     

社会化搜索研究进展综述

首先,引入互联网群体协作的思想,对社会化搜索的概念进行初步界定;随后,在宏观与微观两个层面上,重点从动因（why）、用户（who）、目标（what）、形式（how）4个维度对社会化搜索的概念进行深入解析,并分别从行为、技术、应用、资源4个视角对当前社会化搜索的主要研究内容和主题进行归纳,试图从理论上明晰社会化搜索今后的研究思路与方向;最后阐述当前社会化搜索的研究不足和发展趋势。     

Managing the Electronic Resources Lifecycle: Creating a Comprehensive Checklist Using Techniques for Electronic Resource Management (TERMS)

One of the core functions of the electronic resources librarian (ERL) consists of managing various stages of the electronic resource lifecycle. In order to do this effectively, it is extremely helpful to have a detailed guide on hand. An e-resources acquisition checklist can assist the librarian in covering all aspects of evaluation, acquisition, renewal, and cancellation of e-resources such as databases, e-books, e-journals, and more. Such a tool can be indispensable, especially for new ERLs attempting to get a grasp on the logistics of electronic resources management. Using the newly created Techniques for Electronic Resource Management, the author details the process by which librarians navigate the e-resources lifecycle.     

科技信息资源虚拟联盟间信息质量约束机制的构建

在众多科技信息资源共享模式中,虚拟联盟是实现科技信息资源共建共享的有效组织形式之一,在我国 科技信息资源共享建设中发挥重要作用。但由于不同共享建设单位的资源状况各异、技术条件不同、信息资源质量不 同、数据管理能力水平不齐,使得虚拟联盟间共享信息资源的信息质量问题成为最重要和迫切需要解决的问题之一。 为此,本文提出以构建信息质量约束机制为切入点为科技信息资源共享建设中虚拟联盟间的信息质量管理提供一个基 本分析框架,有助于采取新的质量管理思路、方法和措施进行信息质量的改进,更接近于实践中IQ问题的解决。它包     

基于DMBOK的电动汽车多源信息决策支持系统 数据质量管理过程研究

依据国际数据管理协会数据管理知识体系（DMBOK）中的数据质量管理过程,分析了电动汽车多源信息 决策支持系统中的数据特点以及建设中存在的问题,提出改进建议,并初步构建适用于电动汽车多源信息决策支持系 统的数据质量管理流程。     

高校图书馆的多功能化设计与实现探索——以上海交通大学李政道图书馆为例

文章以集图书馆、博物馆、档案馆、科技馆、美术馆"五馆"功能合一的上海交通大学李政道图书馆为例,探讨了多功能高校图书馆的功能设计、馆藏资源建设与实现途径。     

Fictitious Academic Expertise and Processing Resources

A previous study showed that pairs of students interacting in a second language produced more words when they were assigned a fictitious expert position in a specific competence dimension than when they were assigned a nonexpert position. It has also been shown that the usual level of expertise has an impact on the assigned fictitious expertise effect. The present study was designed to determine whether the processing capacity allotted to the current task could partly determine performance. A given position of expertise may demand a large or small attentional capacity. Two experiments were conducted using a dual-task paradigm. As expected, the different expertise positions led to different reaction times on the secondary task. The second experiment showed that the impact of assigning a position of expertise to students depends on their usual academic standing. This study supports the idea that in interactive situations, performance variations as a function of the expertise position can be partially explained by differences in the processing resources allocated to the task. Implications for teaching are discussed.     

基于到达时间差的无线传感器网络中Sybil攻击检测方案

As wireless sensor networks （WSN） are deployed in fire monitoring, object tracking applications, security emerges as a central requirement. A case that Sybil node illegitimately reports messages to the master node with multiple non-existent identities （ID） will cause harmful effects on decision-making or resource allocation in these applications. In this paper, we present an efficient and lightweight solution for Sybil attack detection based on the time difference of arrival （TDOA） between the source node and beacon nodes. This solution can detect the existence of Sybil attacks, and locate the Sybil nodes. We demonstrate efficiency of the solution through experiments. The experiments show that this solution can detect all Sybil attack cases without missing.