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   254篇
  免费   25篇
  2023年   3篇
  2022年   1篇
  2021年   1篇
  2020年   10篇
  2019年   18篇
  2018年   19篇
  2017年   16篇
  2016年   20篇
  2015年   12篇
  2014年   11篇
  2013年   51篇
  2012年   13篇
  2011年   15篇
  2010年   14篇
  2009年   7篇
  2008年   11篇
  2007年   5篇
  2006年   8篇
  2005年   5篇
  2004年   3篇
  2003年   4篇
  2002年   5篇
  2001年   4篇
  2000年   5篇
  1999年   2篇
  1998年   2篇
  1997年   2篇
  1995年   1篇
  1994年   1篇
  1991年   1篇
  1989年   1篇
  1988年   3篇
  1983年   1篇
  1978年   1篇
  1977年   3篇
排序方式: 共有279条查询结果,搜索用时 62 毫秒
51.
倪婷 《世界历史》2012,(2):96-106,159
本文概述了社会史在美国的发展,重点讨论了社会史的起源、发展及其面临的挑战。作者也考察了社会史研究方法的变迁,包括借鉴人种史、心理学、社会学、行为科学及计量学的研究方法。美国社会史对于历史研究的贡献在于:普通老百姓不仅有自己的历史而且还对历史的发展作出了贡献;社会史还使超越政治的各种人类行为成为历史研究中不可缺少的部分。美国社会史的诞生及成长绝非一帆风顺,特别是自20世纪60年代以来,社会史学家不仅需要面对其他史学同行的挑战,而且还要在与保守派的斗争中赢得美国公众的支持。  相似文献   
52.
Making use of analytical, chemical and mineralogical methods, this paper focuses on the analysis of inclusions in order to address the question of the provenance of prehistoric artefacts excavated in Gura Cheii-Râ?nov Cave (Romania). The study represents the first discovery of bitumen on lithic tools belonging to the Upper and Middle Palaeolithic in Europe. The material was identified through several analytical procedures, such as Fourier transform infrared spectroscopy (FTIR), energy-dispersive X-ray fluorescence (EDXRF), inductively coupled plasma atomic emission spectroscopy (ICP-AES), and X-ray diffraction (XRD).  相似文献   
53.
Abstract: Indigenous activists and anarchist Settler people are articulating common ground in opposition to imperialism and colonialism. However, many anarchists have faced difficulties in Indigenous solidarity work through unintentional (often unwitting) transgressions and appropriations. Through the introduction of settler colonialism as a complicating power dynamic, we observe that anarchists bring unconscious spatial perceptions into their solidarity work. Further, Indigenous activists often perceive anarchists as Settler people first and foremost, which carries another set of spatial implications. We examine a number of examples of anarchist and Indigenous activism, at times empowering and at times conflictual, in order to reveal some general trends. Through an intensive synthesis of Indigenous peoples’ theories and articulations of place‐based relationships, we suggest that deeper understandings of these relationships can be of great importance in approaching solidarity work in place and with respect.  相似文献   
54.
It is a widely held belief that civil development programs play a central role in any counterinsurgency campaign. It is assumed that civil development assistance is key to ‘winning the hearts and minds’ of the civilian population, which, in turn, is crucial for victory. However, there is currently little evidence to support this belief. This article begins by analysing the different methods that have been used in Afghanistan in order to evaluate the effectiveness of civil development programs since 2001. It finds that these methods have severe limitations. Indeed, based solely upon current methods of evaluation, we have no reliable evidence whether civil development programs are actively improving security, having no impact or making matters worse. As such, this article makes the case for a field experiment approach to be adopted in Afghanistan. It argues that field experiments are the most powerful methodology currently available to social scientists for making causal inferences and, by making minor changes to the way in which civil development is distributed, we can vastly improve our understanding of the relationship between aid and security.  相似文献   
55.
在地球某个角落,生活在林荫中的一群人用他们的行动和习俗演绎着对神的虔诚,对祖先的眷念及对生命的特殊理解。他们被称为中国最后一个枪族部落,大树的民族。他们过着大部分中国人所向往的桃源生活,享受着现代人已久违的那份清淡与宁静。这就是至今仍信仰着人树同体的贵州从江县岜沙苗人。  相似文献   
56.
57.
Journal of Archaeological Method and Theory - Shovel probes are a common form of archaeological data collection in densely vegetated landscapes. They were once the subject of critical analyses that...  相似文献   
58.
倪毅 《收藏家》2013,(6):72-78
一.浙江民间文书的搜集与整理在历史研究中,民间文书作为个案资料的典型代表已经越来越受到学者重视。尤其是各地契约文书的大量发现,使契约学渐成显学。其中尤为引人注意的是徽州及闽台地区古文书研究,已形成完整体系。而近年来学者们也开始注意到浙江地区民间文书的搜集和整理研究。  相似文献   
59.
Cai, C.-Y., ?lipiński, A. & Huang, D.-Y., 31.3.2015. The oldest root-eating beetle from the Middle Jurassic of China (Coleoptera, Monotomidae). Alcheringa 39,488–493. ISSN 0311-5518.

Jurorhizophagus alienus gen. et sp. nov., a new fossil root-eating beetle, is described and figured based on an exceptionally well-preserved impression fossil from the Middle Jurassic Daohugou beds (ca 165 Ma), Inner Mongolia, northeastern China. It represents the earliest fossil Monotomidae known to date. Jurorhizophagus can not be assigned to either of two subfamilies Monotominae or Rhizophaginae based on the unique combination of many unusual characters, including an 11-segmented antenna with a 3-segmented club, the presence of a distinct frontoclypeal suture and transverse pronotum with a median longitudinal groove. The discovery of a new genus from the Middle Jurassic highlights the antiquity of Monotomidae and provides new information about the phylogenetic relationships between Monotomidae and its allied families.

Chen-Yang Cai [], Di-Ying Huang [] (corresponding author), State Key Laboratory of Palaeobiology and Stratigraphy, Nanjing Institute of Geology and Palaeontology, Chinese Academy of Sciences, Nanjing 210008, PR China; Adam ?lipiński [], Australian National Insect Collection, CSIRO National Collections Australia, GPO Box 1700, Canberra ACT 2601, Australia.  相似文献   
60.
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