浅议期刊出版质量与其光盘版的检索

以《中国学术期刊(光盘版)》为例,探讨入编期刊出版质量对其光盘版检索效率的影响,认为期刊在出版录方面应统一、规范,以提高检索效率。     

《中国学术期刊(光盘版)》的评价功能分析

《中国学术期刊（光盘版）》收录核心期刊的总比率只有62％,评价功能尚待完善。     

IEEE802.11MAC层CSMA/CA机制的分析与研究

本文分别介绍了CSMA、CSMA/CD、CSMA/CA机制,着重分析了IEEE802.11MAC层CSMA/CA的实现方法和存在的一些弊端.     

图书馆光盘检索系统设计研究

图书馆光盘检索系统设计方案包括系统结构设计、系统流程设计和代码设计等,为图书馆光盘检索系统提供开发的路线.并利用该设计方案,成功开发出高校图书馆光盘检索系统.     

基于CD40110芯片的数字频率计设计

介绍了一种频率计的开发过程,采用多功能、高集成度的CD40110芯片简化电路,通过对CD4060芯片时序分析,获得了理想的控制脉冲组合,解决了实训项目中的延迟时间和竞争冒险问题,从而设计出简单实用和调试方便的频率计。     

The Rise of the Small: The Effects of Industry Consolidation on Small Legal Publishers

Summary

The legal publishing industry has experienced waves of acquisition and consolidation, with almost all of the established players becoming affiliated with either Thomson or Reed Elsevier. A widespread assumption is that this consolidation is driving out the smaller participants in the market, especially in conjunction with the expansion of free Web sites for primary source material. It is presumed that the entrepreneurs who have smaller, profit-based companies are becoming less interested in the market due to financial pressures, increased difficulty of capturing market share, and threat of acquisition (friendly or hostile).

In order to confirm or refute this assumption, the author reviews the industry consolidations, describes the delineation of representative small legal publishers, and analyzes their responses to questions about how the recent industry changes have affected their strategies, markets and product lines. The resulting picture is of an environment much different than that painted by current media pundits. Contrary to the presumption of a disappearing landscape of small players, there is a positive perception of “ripe opportunity” pushing companies into this marketplace-companies armed with new technology tools and strong convictions that they can reach customers ready and willing to do old business in new ways. The small publishers seem to be weathering the climactic industry changes, and have expectations of growth and expansion.     

NE对THP-1细胞IL-6 HMGB1和CD137表达的影响

目的:探讨去甲肾上腺素对人THP-1细胞CD137、IL-6及HMGB1表达的影响.方法:加入101μmol/L的去甲肾上腺素处理THP-1细胞1小时.运用逆转录多聚酶链反应检测其CD137、IL-6及HMGB1mRNA的表达.结果:10μmol/L的去甲肾上腺素能上调THP-1细胞CD137及IL-6mRNA的表达,与对照组比较差异有显著性(P<0.01);但对HMGB1mRNA的表达没有影响.结论:去甲肾上腺素上调THP-1细胞CD137及IL-6mRNA水平.     

DAEMON下光盘镜像文件的自动加载

本文介绍了光盘镜像文件和虚拟光驱,并详述了在虚拟光驱DAEMON下光盘镜像文件自动加载的方法。