首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   551篇
  免费   16篇
  2024年   2篇
  2023年   14篇
  2022年   10篇
  2021年   11篇
  2020年   19篇
  2019年   21篇
  2018年   20篇
  2017年   21篇
  2016年   27篇
  2015年   19篇
  2014年   15篇
  2013年   61篇
  2012年   27篇
  2011年   39篇
  2010年   25篇
  2009年   26篇
  2008年   33篇
  2007年   37篇
  2006年   25篇
  2005年   18篇
  2004年   18篇
  2003年   12篇
  2002年   16篇
  2001年   13篇
  2000年   9篇
  1999年   4篇
  1998年   4篇
  1997年   4篇
  1996年   5篇
  1995年   4篇
  1992年   3篇
  1991年   1篇
  1990年   1篇
  1985年   2篇
  1982年   1篇
排序方式: 共有567条查询结果,搜索用时 15 毫秒
531.
In the 1960s, scientists fascinated by the behavior of free-living animals founded research projects that expanded into multi-generation investigations. This paper charts the history of three scientists’ projects to uncover the varied reasons for investing in a “long-term” perspective when studying animal behavior: Kenneth Armitage's study of marmots in the Rocky Mountains, Jeanne Altmann's analysis of baboons in Kenya, and Timothy Hugh Clutton-Brock's studies (among others) of red deer on the island of Rhum and meerkats in the Kalahari. The desire to study the behavior of the same group of animals over extended periods of time, I argue, came from different methodological traditions – population biology, primatology, and sociobiology – even as each saw themselves as contributing to the legacy of ethology. As scientists embraced and combined these approaches, a small number of long-running behavioral ecology projects like these grew from short pilot projects into decades-long centers of intellectual gravity within behavioral ecology as a discipline. By attending to time as well as place, we can see how this long-term perspective was crucial to their success; they measured evolutionary changes over generations of animals and their data provided insights into how the animals they studied were adapting (or not) to changing local and global environmental factors.  相似文献   
532.
冯锴 《文博》2022,(1):22-28
秦始皇帝陵修建时长近四十年,期间经历了墓主人嬴政从秦王向统一帝国帝王的转变。本文从春秋至秦代数百年间秦陵的发展历程出发,以考古和文献资料为基础,对秦始皇帝陵的修建过程予以分期研究,揭示出秦始皇帝陵的顶层设计历经了由王陵设计向帝陵设计的转变。  相似文献   
533.
旅游目的地活力在开发规划与营销实践中已被广泛采纳,但其组成内核、形成机理却仍未可知。本文在对旅游目的地活力作为系统整体进行认识的基础上,从旅游者视角,以网络游记文本与深度访谈为资料来源,基于扎根理论的方法探索旅游目的地活力认知过程及影响因素。结果发现,通行衔接与吸引物构成了旅游目的地活力的基本组成要素,两者也是体验反馈的前驱要素,体验反馈是旅游目的地活力认知过程中的后效要素,社会性是传递基本组成要素到体验反馈的关键途径。此外,旅游目的地活力的认知过程还受到自然因素、人文因素、管理因素和发展水平因素的影响,且不同因素的影响效应各有不同。  相似文献   
534.
In the past millennium, there have been thousands of polities in Europe and millions of laws. This article contributes to efforts by historians and sociologists to make some sense of this sprawl by constructing common types of law and legal change. Such types constitute distinctive patterns by which historical actors change names, ideas, and applications of rules of law under various circumstances. Three classic forms of change, namely legislation, mutation of custom, and judge‐made law, were described by Max Weber. To Weber's model I add four new types or motifs of change, which I dub legal deeds, voice‐supersession, legal fictions, and anthropological expansion. The major advance of the four motifs is that they each combine what could be called a semantic and a social view of legal change. That is, they take seriously the fact that law is often bound in a self‐conscious tradition of thought and practice. But each motif of change is also characterized by a typified social configuration of legal operators and legal subjects, who apply competing ideas to one another in distinctive ways. The paradigm of law in which the four motifs are embedded is evolutionary, pluralist, and liberal in that it posits creative social organization by multiple, independent, interacting individuals in society, weaving cumulative, complex orders. This theory makes several significant scholarly interventions. First, it attempts to reconcile outstanding semantic and social theories of legal change. Second, it historicizes legal pluralism while giving evolutionary theory a healthy dose of contingency. Third, the four motifs should also be serviceable to intellectual historians as tools for describing how historical actors interact with traditions generally. Tradition need not be viewed as conservative or even overwhelmingly static. This paradigm may help historians and social scientists assess how the force of the status quo balances against the power of individuals to innovate.  相似文献   
535.
This book assumes that basic ways of thinking about history are hard‐wired in the brain. Since different styles of discourse with which we talk about the past are hardwired, Blum infers that a protohistorical consciousness is necessary for the existence of language. Historical logics reflect some preconceived part–whole relation. Blum discerns four kinds of part‐whole structure, which he terms continuity, quantum, continuum, and dialectic. Blum believes that these part–whole relations rest on universal, prereflective intuitions. He concludes that humans have different prelinguistic intuitions of time. Blum claims that people's variable innate temporality is expressed in their historical style. It follows that historical style antedates history as a genre. Hence we are not talking about historical style, but about how individuals apply their sense of the relation between parts and wholes to the problem of time. Our study of historical context becomes secondary to the assumptions we make about the interface between part–whole relations and time. The temporality of history is derivative of a phenomenon that is not historical. Certain conclusions are suggestive. First, modality precedes tense in evolution. Second, we ourselves are continuing to evolve. Blum believes that we are moving “towards a selection of abstract thinkers ruled by pure reason.” Instead of viewing cultures as organisms, it is more profitable to think of the evolution of structures of thinking, and to show that some are more prominent at present than they have been in the past. For Blum, historical thinking is a dependent variable. It depends on tense and modality, which are given before language and culture. Historical thinking reflects a primary experience, but it is not such a primary experience itself.  相似文献   
536.
537.
Media attention is fundamental to the policy process and policy change in punctuated equilibrium theory. In this literature, media attention is usually conceptualized as fomenting or contributing to shifts in attention, positive feedback, and large‐scale policy change. This article extends how we understand the role of the media and punctuated equilibrium by arguing that media coverage can also contribute to negative feedback and stability in the political system. Media attention should also slow down the speed of policymaking and the momentum for policy change as new policy participants and problem definitions enter the debate. Using event history analysis, this article tests the effects of media coverage on the length of time it takes legislation, once introduced, to become law for public laws from the 109th U.S. Congress (2005–06). Findings provide support for media attention “putting the brakes” on policymaking. Controlling for other factors, the speed of bill passage slows down as media attention increases. This effect decays over time for high levels of media coverage.  相似文献   
538.
90年来,中国共产党围绕争取民族独立、人民解放和实现国家繁荣富强、人民共同富裕这两大历史任务,提出了多个既相联系又有区别的国家建设目标。新民主主义革命时期,面临半殖民地半封建的国情,中国共产党提出要建设一个独立、自由、民主、统一、富强的新中国;获得全国执政地位后,在社会主义革命和建设时期,中国共产党提出要建设社会主义现代化强国的国家建设目标;改革开放历史新时期,立足于总结社会主义建设的经验教训,中国共产党又提出了走中国式现代化道路,建设富强、民主、文明、和谐的社会主义国家的新目标。  相似文献   
539.
张艳芳 《神州》2011,(3X):99-99,103
面对毫无写作兴趣的学生,如果只是简单地告诉他们作文的要求,读几篇范文,然后叫他们写作,这样效果肯定不好。因此在设计写作主题时必须抓住学生感兴趣的内容,让他们想说爱说,让他们萌发写作的欲望,进而产生写好作文的信心。  相似文献   
540.
霍华戈 《神州》2011,(3X):183-183
本文是初中语文《我的叔叔于勒》一课的教学设计,作者力求通过这种设计能够体现新课标所倡导的初中语文教学新理念,即通过语文阅读教学培养学生的感受、理解、欣赏和评价的能力。  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号