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   1741篇
  免费   68篇
  2023年   11篇
  2020年   20篇
  2019年   43篇
  2018年   49篇
  2017年   71篇
  2016年   64篇
  2015年   37篇
  2014年   37篇
  2013年   666篇
  2012年   36篇
  2011年   45篇
  2010年   43篇
  2009年   41篇
  2008年   32篇
  2007年   29篇
  2006年   24篇
  2005年   16篇
  2004年   31篇
  2003年   25篇
  2002年   27篇
  2001年   18篇
  2000年   14篇
  1999年   20篇
  1998年   14篇
  1997年   11篇
  1996年   9篇
  1995年   8篇
  1994年   8篇
  1993年   22篇
  1992年   9篇
  1991年   16篇
  1990年   13篇
  1989年   13篇
  1988年   13篇
  1987年   14篇
  1986年   13篇
  1985年   14篇
  1984年   17篇
  1983年   11篇
  1982年   12篇
  1981年   16篇
  1980年   22篇
  1979年   12篇
  1978年   16篇
  1977年   22篇
  1976年   28篇
  1975年   12篇
  1973年   11篇
  1972年   8篇
  1971年   9篇
排序方式: 共有1809条查询结果,搜索用时 15 毫秒
131.
The dynamic interaction of pile foundations, embedded in a horizontally stratified soil profile, with superstructures under low to moderate earthquake excitation can be handled in different ways. In this article, the soil-pile-superstructure dynamic interaction problem has been investigated using the coupled finite element-boundary element method. Comparison with shaking table experiments of a small scale model pile shows a good correlation with the proposed method in terms of the kinematic response of pile foundations and the structural response. A parametric study of the proposed model has yielded important results essentially concerning the amplification factors of the pile foundation and the superstructure.  相似文献   
132.
133.
134.
135.
The 1630s was a decade of dramatic and often controversial change within the Church of England, as innovatory standards of ceremonial conformity and for the maintenance and appearance of church buildings were imposed upon the Church. This article will examine the imposition of so-called Laudian policies in the Yorkshire parish of Slaidburn. Despite a growing interest in Laudianism amongst historians in recent decades, little work has attempted to explore the dynamics of Laudianism in one parish. The unusual variety of sources which survive relating to Slaidburn during this period provides a rare opportunity to explore the circumstances in which Laudian enforcement was enacted. Central to these responses was the rector, Samuel Moore, a somewhat isolated figure within the parish. This article will suggest that beyond the high polemics which buttressed Laudianism, practical considerations may have prompted a willing clerical constituency for Laudian ideas of ministry and of proper worship.  相似文献   
136.
This paper introduces a collection of seven papers on archaeological theory in the southeastern United States, originally presented as a plenary session of the 2012 meeting of the Southeastern Archaeological Conference in Baton Rouge, Louisiana. I explain the original idea for the session and present the instructions given in advance to the participants.  相似文献   
137.
138.
Current research on USS Arizona is focused on a minimum-impact technique for calculating corrosion rate of the battleship's steel hull by analysing physical and chemical properties of marine encrustation covering the exposed hull. An equation is derived that allows concretion thickness, density, and total iron content to be used to calculate corrosion rate of steel hull plate.
© 2006 The Authors  相似文献   
139.
140.
Behavioral ecology is the study of adaptive behavior in relation to social and environmental circumstances. Analysts working from this perspective hold that the reproductive strategies and decision-making capacities of all living organisms—including humans—are shaped by natural selection. Archaeologists have been using this proposition in the study of past human behavior for more than 30 years. Significant insights on variation in prehistoric human subsistence, life history, social organization, and their respective fossil and archaeological consequences have been among the more important results.  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