世界新闻通史体系刍议

本文归纳了已有外国新闻史研究的四种模式 ,并指陈其利弊。在此基础上 ,提出建立世界新闻通史体系的治学观点———空间上 ,能涵盖中外 ,以整个世界新闻传播全局为对象 ;时间上应古今贯通 ;研究对象上应涉及新闻事业、新闻制度和新闻观念     

关于图书馆服务创新的思考及建议

文章在研究图书馆服务创新的内涵基础上,运用服务创新的基本原理,分析了图书馆服务创新的几种主要方式,包括重组创新、专门化创新、形式化创新以及技术创新,最后,提出了关于图书馆服务创新的几点建议.     

The role of self-construal in moderating the advertising repetition effect: evidence from Korea

This study explored the role of self-construal in moderating the effect of same- and varied-ad repetition on consumer response to advertising and brand on the basis of self-construal and encoding variability theory. In the study, subjects primed with independent or interdependent self-construal were exposed to either the same or varied ads. Findings indicate that, for foreground information in ad, independent self-construal subjects elicited more than interdependent self-construal subjects in same-ad repetition whereas there was no difference between independent and interdependent self-construal subjects in varied-ad repetition. However, for background information, interdependent self-construal subjects performed better than independent self-construal subjects in both same- and varied-ad repetition. In the case of brand recall, in varied-ad repetition, interdependent self-construal subjects recalled better than independent self-construal subjects did, whereas there was no difference between interdependent and independent self-construal subjects in same-ad repetition. It was also found interdependent self-construal subjects evaluated the target brand more positively than independent self-construal subjects did in varied-ad repetition. However, there was no difference in brand attitude between independent and interdependent subjects in same-ad repetition.     

研究性学习课程与分科课程之关系辨

将研究性学习课程与传统分科课程加以辨析，主要是突出研究性学习课程的特点，理清二的区别与联系，使二相互渗透，在实际教学中共同发生作用。     

一种增强移动自组网Internet连接的改进型方案

针对移动自组网因单向链路以及盲目转播网关发现分组而造成的与Internet互联性能下降,提出了一种增强型互联方案.同时结合了先应和后应网关发现策略优点的混合网关发现策略被用来获取良好的Internet连接并保持低开销.而通过交换携带有额外增加的对称邻居节点列表和非对称邻居节点列表字段的AODV hello分组,单向链路得以从路由计算中予以清除而广播风暴也同时得到抑制.基于ns-2的仿真结果表明此改进型Internet连接方案在单向链路数量及节点移动速度均变化的应用环境下能取得较其他方案为优的互联性能.     

移动自组网AODV多路径路由研究

AODV协议是唯一通过IETF批准成为RFC文档的移动自组网按需控制路由协议．分析AODV路由协议工作过程及优缺点，并介绍了几种典型的基于AODV的多路径路由改进协议，最后对这些多路径协议进行优缺点分析及性能比较。     

Hybrid ants-like search algorithms for P2P media streaming distribution in ad hoc networks

Media streaming delivery in wireless ad hoc networks is challenging due to the stringent resource restrictions,po-tential high loss rate and the decentralized architecture. To support long and high-quality streams,one viable approach is that a media stream is partitioned into segments,and then the segments are replicated in a network and served in a peer-to-peer(P2P) fashion. However,the searching strategy for segments is one key problem with the approach. This paper proposes a hybrid ants-like search algorithm(HASA) for P2P media streaming distribution in ad hoc networks. It takes the advantages of random walks and ants-like algorithms for searching in unstructured P2P networks,such as low transmitting latency,less jitter times,and low unnecessary traffic. We quantify the performance of our scheme in terms of response time,jitter times,and network messages for media streaming distribution. Simulation results showed that it can effectively improve the search efficiency for P2P media streaming distribution in ad hoc networks.     

基于图论的ANMP分群算法的简单实现

针对分布式无线网络多跳、移动的特点,要实现整个网络的快速部署以及拓扑结构变化后的动态重建,最有效的方法是采用分群协议,并在linux环境下,利用基于图论的ANMP分群算法,实现自组网的分群。     

美国国务院对华文化外交的出台

长期以来,美国对外的文化和教育交流活动一直是由民间组织和个人发起并实施的,1938年国务院建立文化关系司,是美国政府致力于"文化外交"的开端。美国试图通过与其他国家及其人民之间观念、信息、艺术和文化的其他要素的交流来促进相互理解。1941年末太平洋战争爆发以后,为了扶植中国以抵抗日本的攻势,减轻对美国本土的威胁,从而赢得太平洋战争的胜利,美国国务院开始筹划实施专门针对中国的文化教育交流与合作项目。     

浅析广播融媒体直播车的系统构成及功能实现

江苏省广播电视总台新建广播融媒体直播车,集成音视频系统,并运用无线自组网、4G传输及卫星“动中通”等通信技术组成稳定可靠的传输系统,实现可移动的融媒体直播。