对美国信息企业成功经营经验的探索

本文通过剖析美国若干信息企业的发展历程来探讨它们在激烈竞争的环境中获得巨大成就的经验。它们善于捕捉历史机遇，并且制定充分利用机遇的独特经营战略。历史机遇为企业提供新的市场空间，而高超的经营战略则有利于发挥自己的优势，提高竞争力     

The European Union’s Constitutional Crisis—Causes and Consequences

The rejection of the treaty establishing a European constitution by French and Dutch voters has thrown the EU into a deep crisis. What developments in the EU contributed to these referenda results? What consequences are to be drawn for the continuation of integration and the integration goal, the governance of the EU-25 and the further planned enlargements? What flaws are there in the present draft constitution and how can these be dealt with?     

Terrorism and tourism as logical companions

The symbiotic relationship between terrorism and tourism needs to be understood and acted on, not just in terms of security and marketing, but in terms of such factors as planning, site development, employment policies, political risk analysis and emergency management. This article looks at the relationship between tourism and terrorism from several perspectives. The political and economic impact of terrorism on tourism is assessed, including the sensitivity of the tourism industry to general political strife and the vulnerability of travellers and tourist facilities to terroristic activity. The nature of terroristic violence and the objectives of terrorist groups are evaluated to determine why and how attacks on tourists and facilities may fit the organizational and political objectives of terrorist groups. Finally, the article suggests how the industry and policy makers must proceed to reduce the vulnerability for tourists and the travel sector.     

微波反馈放大器匹配及增益带宽的研究

本文介绍的是小信号微波反馈放大器的分析与综合。放大器是采用通常的增益级的框图,并取并联反馈。文中提供全部网络元件值的估算和预测闭环宽频带增益、带宽和双端口的匹配值。简述匹配值与增益用图解法的权衡。最后描述了综合方法并举例说明设计实例。     

Fred Turner. From Counterculture to Cyberculture: Stewart Brand, the Whole Earth Network, and the Rise of Digital Utopianism

The Whole Earth Catalog provided the commune-dwellers of the1960s with a forum in which to discuss tools and systems forbuilding alternative life styles. From Counterculture to Cybercultureexplains why and how the Catalog's perspective on tools andsystems became a dominant paradigm for information networksand the technology industry. Using archival material and hisown interviews with many key figures, Fred Turner has writtenan engrossing and in-depth account of the role the Catalog andits founder, Stewart Brand, played