戴维森与第三人效果:一种舆论学的视角

本文从舆论研究切入,结合第三人效果提出者戴维森的经历,从哥伦比亚学派、心理战与舆论战经历、舆论研究核心框架等角度探讨了戴维森的舆论研究与第三人效果之间的理论脉络关系。研究的最后一部分从学派影响、学术焦点、学科交叉等角度探讨了第三人效果作为理论创新的一些启示。     

Premiums,announcement returns and desperation in high tech mergers: A growth options analysis

We examine the announcements of high tech mergers using a relatively new proxy for growth options we call “growth to book.” We find this adds significantly to help explain the premiums paid and announcement period abnormal returns when acquiring tech targets. Higher synergies are expected by managers and investors when targets have low growth options and acquirers have high growth options, resulting in higher premiums paid and either less negative or more positive abnormal returns. However, we find significant variation in the results by the relative size of the target and when low growth to book (GTB) firms acquire. While high GTB acquirers tend to pay more in premiums, low GTB acquirers can pay higher premiums and receive some of the most negative returns at announcement. We find evidence some acquisitions are motivated by desperation as these acquirers have the lowest GTB and do a disproportionate number of the relatively largest deals, receiving the worst abnormal returns at announcement.     

一种快速的QAM信号半盲混合均衡算法研究

针对传输正交幅度调制(QAM)信号的多输入多输出(MIMO)无线通信系统中的信号间干扰问题,提出了恒模算法(CMA)和软决策(SDD)算法相结合的混合算法。该方法代价函数结构简单,精确地利用了已知信息,使得均衡后信号具有良好的误码率性能。本文采用共轭梯度法进行优化,与现在常用的梯度类算法相比较,具有快速收敛的特性。最后分别通过信道最大扭曲和收敛速度分析了该算法的可靠性和有效性,且通过计算机仿真证明了该算法的良好性能。     

小布什执政后中美关系未来走向评析

最富戏剧性的美国大选结束了,小布什已入主白宫。新总统原则上将沿续美国“单极独霸”世界的全球战略,但将进行战略调整,把战略重点放在亚太地区。小布什将把中国作为竞争对手而不是克林顿的“建设性战略伙伴”关系,近期中美关系在一定程度上会受到损害,但中美的共同利益必将使双方回到“对话与合作”的战略关系上来。中美关系未来走向将直接影响２１世纪世界格局和国际形势的走向。     

No “fear of flying”? Worrals of the WAAF,fiction, and girls’ informal wartime education

Abstract

This article focuses on the series of 11 books about a young female pilot, Worrals of the WAAF, by W.E. Johns, creator of Biggles. The Worrals books were published from 1941 when recruitment for the Women’s Auxiliary Air Force was falling. Johns chose to ignore that the WAAF supported pilots through their work on the ground and did not themselves fly. The article discusses how historians of education can draw on fiction in order to identify aspects of informal education, especially during wartime, when so many children’s formal schooling was disrupted or non-existent. Drawing on Erica Jong’s 1970s metaphor of “flying” as representative of female freedom, it is possible to read Worrals’ character as a role model for teenage girls. The conundrum of why Johns chose to put Worrals in the WAAF, rather than in Air Transport with the likes of Amy Johnson, is further explored in the light of evidence that a number of WAAF were seconded to the SOE. It concludes that fiction read alongside a range of other evidence offers a rich source for the historian engaged in a search for the gendered nature of education beyond the classroom.     

3Cr2W8V模具钢球化退火工艺研究

分析模具凹模坯料用冷冲压制造型腔时开裂的原因，进行了几种3Cr2W8V模具钢球热处理软化工艺试验，观察了组织，测定了力学性能，获得实际生产中可行的3Cr2W8V模具钢球化退火工艺．     

阿普尔批判教育研究的批判逻辑

作为美国新马克思主义教育哲学的创立者和最早在北美倡导批判教育运动的领军人物之一,阿普尔对由右翼保守势力主导的市场化和私有化的教育改革已经进行了长达四十多年的批判研究。在批判立场上,阿普尔表现出对社会草根群体的现实关怀;在批判方法上,阿普尔采取了情境化的关系分析进路;在批判旨趣上,阿普尔致力于民主社会的教育重建,其实践策略包括将批判性反思、学校变革、民主实践的捍卫与对教育改革中赤裸裸的经济逻辑的抵制相结合的"非改革主义的改革",将教师、社区和社会活动家等众多教育利益相关者动员起来积极参与学校教育变革的"厚民主"的教育,以及旨在实现教育领域的知识分子从单纯以知识生产为目的的"学者"转变为能够基于自己所发现的知识在政治和教育层面上为追求经济、社会和教育的平等与民主开展行动的"活动家"的身份重塑。     

孤独的歌者：Whitman诗歌同性恋主题探微——基于In Paths Untrodden个案研究

性和性爱是Whitman诗歌的一个主要且重要的主题。在饱受争议的组诗Calamus中,诗人大胆地将这一主题磊落铺陈。In Paths Untrodden是Calamus的序诗,对理解整首组诗具有至关重要的意义。文章借鉴性别研究理论,结合诗人的时代背景、诗学理念和人生经历,对InPaths Untrodden这首诗进行个案研究,尽量还原、复活诗人当时的创作意图,重新理解、深入解读Whitman的这些性诗,领略诗人在19世纪的历史环境下用模糊暧昧的意象和迂回隐约的暗示来表达自己真情实感和思想的策略与技巧。Whitman从隐藏、变形到尽量体现自己原来的创作意图,这一系列变化反映了时代变迁下性观念的改变,以及对同性恋现象和行为的理解、接受和宽容。     

基于光纤连接三个光腔制备三原子W态(英文)

提出一种基于两光纤连接三个光腔制备三原子W态的方案。在此方案中,腔场的信息可以通过光纤进行传送,利用集成在光纤上的两个法拉第回转器阻止来自第二个和第三个腔场的反射。制备得到三原子W态时腔场处于初始时的真空态。由于原子与腔场之间是共振作用,耦合强度相对较大,能缩短所需的相互作用时间。     

从5W1H要素入手解析ESP课程——以南京农业大学为例

随着经济全球化进程及中国经济的快速发展,社会对复合型人才的需求剧增,重在培养特殊用途英语的ESP课程受到重视。文章以5W1H六要素为切入点,从课程目的、课程内容、课程开设时间、课程师资队伍建设及课程教学方法等几个方面来解析ESP课程情况。