珠江三角洲文化形态论纲

珠江三角洲文化形态的性质是务实求利;其特征是商业俗文化;其结构由岭南文化、中原文化、港澳文化和西方文化四因素构成;其地位是有中国特色的社会主义新文化的“曙光”,是中华民族大一统文化的“中介”。     

Political theater and student organizations in the 1989 Chinese movement: A multivariate analysis of Tiananmen

Social movement research has often been divided between organizational and cultural analyses of collective action. Organizationally oriented theorists have viewed indigenous organizational structure as the critical variable in the emergence of collective action. Political culture and cultural frame theorists have focused instead on the cultural frames that resonate with audiences, mobilizing them to action. But social movements cannot be the result of one or the other of these factors. An analysis of the 1989 Chinese movement illuminates the multivariate aspects of this social movement. This movement was a two-tiered movement with an organized student leadership tier and a mass audience. Enmeshed in university organizations and student networks, the student leaders relied on an organizational structure that had been emerging since the mid-1980s. This organized leadership tier employed cultural symbols and acts to mobilize mass audiences that were beyond the scope of the students' organizational linkages. The political theater of the organized student leaders was complemented by institutional changes that had been occurring over the decade of reform in China and a political opportunity that allowed wide coverage of the students' activities.     

卫星光通信中平台抖动补偿技术研究

以卫星光通信系统为例,对空间光通信系统中光学平台的抖动进行了分析。研究了一种自调节前馈补偿技术,通过自适应信号处理或对前馈控制器进行直接优化,可对光学平台的抖动进行有效抑制。     

宽带卫星通信和星际链路间激光通信的应用前景

提出了由于信息化社会、Ｉｎｔｅｒｎｅｔ、Ｉｎｔｒａｎｅｔ和多媒体技术的出现,从而要求卫星通信向多体制、多功能发展。文中着重分析了具有独特优点的激光通信在宽带卫星通信和星际链路中的现实商用前景。     

空间光通信ATP技术及其进展

对自由空间激光通信光束自动捕获、跟踪、瞄准（ＡＴＰ）系统的结构与系统主要技术指标进行了分析和讨论。通过对其中典型系统的介绍,进一步描述了ＡＴＰ技术的最新进展,论证了空间激光通信的可行性。     

空间光通信ATP系统设计分析

空间光束捕获、跟踪、瞄准（ＡＴＰ）技术在空间光通信中具有重要地位。文中讨论了空间光通信系统中的ＡＴＰ伺服系统的结构,并对系统稳态设计和系统动态综合等关键问题进行了详细的分析和研究。     

自由空间光通信ATP地面模拟系统研制

自由空间激光通信技术研究关键的步骤之一是通过其地面实验演示系统研究各项关键技术和整体优化技术,并验证它们的性能。文中描述了该地面实验演示系统的一个关键分系统—捕获、跟踪、瞄准（ＡＴＰ）系统的设计、预期达到的性能和未来升级的设想。     

卫星光通信关键技术与演示系统光学天线

针对卫星间光通信链路需求,分析了卫星间激光通信系统关键技术分布。介绍具有自动跟瞄功能的激光通信系统光学天线构成方式,对主要性能参数进行了设计和计算。     

半导体激光器的光学准直

对半导体激光器进行光学准直是空间光通信系统必须进行的重要工作。文中简述了准直通常使用的方法,测试了使用单透镜对一种３５ｍＷ半导体激光器的准直结果,准直效率约为６０％,准直后的发射角为０４～０７５ｍｒａｄ。     

What Do Movements Mean? The Value of Participant-Observation

Participant-observation can teach us much about the everyday meanings of doing social activism. I conceptualize these implicit meanings in relation to work in the sociology of culture, and social movement studies, and give examples from activists' everyday interaction. A participant-observer's forays into implicit meanings illuminate three dimensions of activists' experiences: the ways activists practice democratic citizenship in their groups, the ways they build group ties, and the ways they define the meaning of activism itself. By probing these implicit meanings, we can address questions that concern many social movement scholars. We increase our understanding of how movements grow, accomodate conflict, and build alliances, and we can specify which insights are useful in theories of contemporary or new social movements.