The Importance of Attention Diversity and How to Measure It

Studies of political attention often focus on attention to a single issue, such as front‐page coverage of the economy. However, examining attention to a single issue without accounting for the agenda as a whole can lead to faulty assumptions. One solution is to consider the diversity of attention; that is, how narrowly or widely attention is distributed across items (e.g., issues on an agenda or, at a lower level, frames in an issue debate). Attention diversity is an important variable in its own right, offering insight into how agendas vary in their accessibility to policy problems and perspectives. Yet despite the importance of attention diversity, we lack a standard for how best to measure it. This paper focuses on the four most commonly used measures: the inverse Herfindahl Index, Shannon's H, and their normalized versions. We discuss the purposes of these measures and compare them through simulations and using three real‐world datasets. We conclude that both Shannon's H and its normalized form are better measures, minimizing the danger of spurious findings that could result from the less sensitive Herfindahl measures. The choice between the Shannon's H measures should be made based on whether variance in the total number of possible items (e.g., issues) is meaningful.     

希腊化时期王友刍议

王友在希腊化时期的君主统治中起着关键作用,但国内外学者对王友的本质还存在不同看法,如认为王友是朋友、佣人或士等。从王友的起源与构成来看,王友的任用带有明显的种族歧视;王友与国王的关系是一种基于仪式化友谊而建立起来的复杂的个人关系;王友的功能与作用随着历史的发展从朋友间的互助发展到一个官僚集团。如果把上述关于王友的三个方面与中国战国时期的士进行比较,并进一步分析两者之间的共同点和不同点,可以得出王友是仕,而不是士、朋友或佣人的结论。     

新时期中国文化发展的几个宏观问题研究

改革开放以来,中国共产党的文化理论与政策经历了从“一体化”的文化建设理论与方针到建设“高扬主旋律”的多样化的文化观念与政策的演进;党在知识分子问题上的认识和政策也发生了很大转变,不但认识到知识分子是工人阶级的一部分,是先进生产力的开拓者,而且把市场经济、知识经济、信息时代与知识分子政策密切联系在一起;与此同时,建立在一元化基础上的一体化的文化形态开始解构,并形成了主导文化、大众文化和精英文化三足鼎立的当代中国文化的基本格局。     

The "Mouse That Roared": Agenda Setting in Canadian Pesticides Politics

Issue redefinition and venue shopping have been identified as key strategies for enacting agenda and policy change, but much work remains to be done in elaborating these processes. I argue that an important aspect of issue redefinition involves shifting not only the image of an issue but also the bases for considering those issues—what I call policy principles. Policy principles are the core values, beliefs, or guidelines attached to policies that help direct decision making. The emergence and acceptance of new principles by the public and policymakers can be a vital source of policy change, at times having far greater consequences for policy than redefining an issue. Venue shopping is also a multifaceted undertaking involving efforts by policy entrepreneurs and advocacy groups to keep issues out of venues they would rather not participate in as well as move decision making to new arenas. Moreover, while the literature suggests that shifting venues is usually a sensible strategy, sometimes venue shopping can backfire. A case study of the municipal movement to restrict the nonessential use of lawn and garden pesticides in Canada illustrates these theoretical points and shows the applicability of agenda setting models to contexts outside the United States.     

祭器、礼器、“邵局”——关于南宋官窑的几个问题

作者在多年积累的考古实物资料的基础上,结合历史文献,探讨了与南宋官窑密切相关的诸问题：如南宋陶质祭器的使用与特征,王晋锡、邵谔与礼器局、邵局、修内司官窑的关系,南宋官窑生产的仿青铜礼器瓷的性质与用途等。作者认为,王晋锡之陶质祭器的烧造与邵谔之修内司官窑的建立,是先后发生在南宋绍兴年间的两件不同的事件,两者之间并无直接或间接的关系,南宋陶质祭器与官窑仿青铜礼器瓷在形制及用途上有本质的区别。     

英国新社会史思潮的兴起及其整体社会史研究的国际反响

“新社会史研究”作为一种史学新思潮,与西方史学的整体化趋势,几乎同时出现于现代国际史学舞台。英国新社会史思潮具有广泛和深刻的国内外史学渊源。英国新社会史学派宣扬的核心问题是坚持“自下而上”史学观念,它彰显了由此观念指导下的整体社会史取向和研究实践。从较广泛的分析角度看,在国际史学发展格局重新调整的现时背景下,英国马克思主义新社会史学派引起国内外史学界的广泛注意和效仿。它对国际史学发展的推动性作用是不可忽视的,这集中体现了该学派及其整体史学研究的国际反响。     

20世纪50年代中国在引进基础上的技术创新

20世纪50年代中国的技术引进和技术创新活动集中在“一五”时期和“大跃进”时期,虽然这两个时期在引进基础上的创新活动都是在重工业优先发展战略下的体制框架内进行的,但在引进技术的行业构成、规模、项目建设的实施和技术的消化乃至技术创新机制、成效等方面都有所不同。“一五”时期采用了全面、系统、灵活多样的方式和重点攻关,在消化、吸收引进技术方面取得了明显的成效,某些领域实现了技术再造,技术创新能力得到了迅速积累,但从总体上看仍处于对引进技术的翻版、修改阶段。“大跃进”时期的技术创新机制被严重干扰,群众运动代替了深入细致的科学研究,在群众性技术革新运动中引进基础上的创新活动格外活跃,通过技术革新运动学会了自行制造一些成套设备、生产工艺,但并没有从产业部门或行业整体上真正实现引进基础上的再次创新,其整体水平依然停留在对引进技术的“初级模仿”阶段。     

宋代江南地区慈善事业研究

宋代江南地区社会慈善事业的发达,集中体现在官方慈善事业的繁荣和民间慈善事业的勃兴两个方面.官方通过兴建慈善机构、设置慈善粮仓、实施应急救济等手段来推动慈善事业的发展.民间则通过成立慈善组织、实施族内济助、自发捐资行善等方式来促进慈善事业的进步.宋代江南地区的慈善事业具有机构设置早、规模大、设施全、济助对象多、慈善活动制度化等特点.政府高度重视、经济高度发达、古代慈善思想的影响以及社会各界人士的积极参与等,是宋代江南地区社会慈善事业迅速发展的主要原因.     

《毛诗序》溯源

现存《毛诗序》并非汉代儒生凭空臆造。它的内容传自孔子,文章成于子夏,子夏之后,毛公和卫宏都可能对序文内容做过较大的调整与发挥。就孔子而言,他对《诗经》诗歌内容的理解可能来自周代史官。这些史官在周代采诗活动中,最早保存了当时诗人作诗的创作意图。     

对峙中的缓和：70年代的美国对朝政策

对朝鲜政策是美国亚太政策中非常重要的一环.伴随着70年代国际局势的相对缓和,美国对朝政策也出现松动.尽管两国间危机不断,但在安全、政治、文化交流等领域美国仍采取了一些主动缓和的措施.然而,作为二战后美国第一场热战的主要对手之一和意识形态上的敌人,美国对改善对朝关系又心存疑虑,同时也受到多方牵制,最终没能有所突破.