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   328篇
  免费   17篇
  2021年   3篇
  2020年   3篇
  2019年   6篇
  2018年   12篇
  2017年   13篇
  2016年   8篇
  2015年   7篇
  2014年   6篇
  2013年   80篇
  2012年   8篇
  2011年   5篇
  2010年   8篇
  2009年   7篇
  2008年   6篇
  2007年   2篇
  2006年   8篇
  2005年   7篇
  2004年   11篇
  2003年   9篇
  2002年   6篇
  2001年   5篇
  2000年   7篇
  1999年   5篇
  1998年   5篇
  1997年   9篇
  1996年   2篇
  1995年   3篇
  1994年   2篇
  1993年   3篇
  1992年   8篇
  1991年   5篇
  1990年   3篇
  1989年   3篇
  1988年   2篇
  1987年   2篇
  1984年   4篇
  1983年   3篇
  1982年   2篇
  1981年   6篇
  1980年   3篇
  1979年   6篇
  1978年   6篇
  1977年   9篇
  1976年   2篇
  1975年   5篇
  1974年   3篇
  1973年   4篇
  1972年   4篇
  1971年   2篇
  1970年   2篇
排序方式: 共有345条查询结果,搜索用时 15 毫秒
131.
132.
'The Road Not Taken'
Two roads diverged in a yellow wood, And sorry I could not travel both And be one traveller, long I stood And looked down one as far as I could To where it bent in the undergrowth;
Then took the other, as just as fair, And having perhaps the better claim, Because it was grassy and wanted wear; Though as for that the passing there Had worn them really about the same,
And both that morning equally lay In leaves no step had trodden black. Oh, I kept the first for another day! Yet knowing how way leads on to way, I doubted if I should ever come back.
I shall be telling this with a sigh Somewhere ages and ages hence: Two roads diverged in a wood, and I -I took the road less travelled by, And that has made all the difference.  相似文献   
133.
134.
ABSTRACT. The performance of five criteria for identifying significant interregional labor market linkages is compared. The criteria suggest differential model specifications based on the implicit tradeoff between parsimony and specification bias. Models were specified using: Akaike's final prediction error; Schwarz's Bayesian information criterion; an input-output model; Aoki's time series algorithm; and a combined input-outputi/time series approach. Models of the changes in monthly employment for twelve industries in six regions in northeastern Utah were specified using each criterion. Models based on Schwarz's criterion and the input-output criterion were preferred to those based on other criteria.  相似文献   
135.
136.
137.
138.
ABSTRACT

As Parliamentary Under-Secretary of State for Foreign Affairs in the Liberal Government from August 1892 to June 1895, Sir Edward Grey was exposed to the damage that an anti-British, Franco-Russian Alliance could do to the interests of the British Empire. The experience of those years left an enduring impression upon him. Between June 1895 and December 1905 Grey espoused the cause of agreement with the Russian Empire wherever possible. As Foreign Secretary, he advanced this cause through the Anglo-Russian Conventions of August 1907, whose objectives were to achieve what he described as ‘repose’ on the North West Frontier of India, and the reduction of Russian pressure on Persia in particular. So far as the outbreak of war in 1914 is concerned, Grey's known propensity to maintain good terms with Russia gave the latter a degree of leverage which they exploited to the full in insisting on British support in standing up to Germany and Austria-Hungary following the assassination of Archduke Franz Ferdinand. Grey's position within the Liberal Government, and his clear determination to resign unless Russian demands were met, swung the British government from a neutralist stance to one of full participation in the Great War.  相似文献   
139.
140.
Theory suggests that the spatial distribution of development within a local jurisdiction affects the costs of providing local public services. We use GINI coefficients to characterize these distributions at the county level and estimate the effects on real per capita expenditures from reductions in the spatial concentration of all buildings and nine alternative types of development. We also estimate the effect on expenditures from expansions in the developed area of a county. The results obtained from a panel of Florida counties confirm our theory and suggest that the geography of development within a county affects public services costs.  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