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   353篇
  免费   20篇
  2021年   3篇
  2020年   4篇
  2019年   6篇
  2018年   13篇
  2017年   19篇
  2016年   9篇
  2015年   9篇
  2014年   7篇
  2013年   86篇
  2012年   9篇
  2011年   6篇
  2010年   8篇
  2009年   9篇
  2008年   6篇
  2007年   2篇
  2006年   8篇
  2005年   8篇
  2004年   13篇
  2003年   9篇
  2002年   6篇
  2001年   5篇
  2000年   8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   9篇
  1991年   5篇
  1990年   3篇
  1989年   2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   7篇
  1978年   7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373条查询结果,搜索用时 15 毫秒
81.
82.
The Policy Agendas Project collects and organises data from official documents to trace changes in the policy agenda and outputs of national, sub-national and supranational governments. In this paper we use the policy agendas method to analyse the changing contents of those Australian Governor-General's speeches delivered on behalf of incoming governments between 1945 and 2008. We suggest that these speeches provide an important insight into how the executive wishes to portray its policy agenda as it starts a new term of government. In mapping the changing agenda in this way we address four questions: which issues have risen or fallen in importance? When and in relation to what issues have there been policy ‘punctuations’? How stable is the Australian policy agenda? How fragmented is the policy agenda? We find evidence of a number of policy punctuations and one turning-point: the election of the Whitlam government.  相似文献   
83.
84.
85.
86.
87.
88.
Homeowners who make their homes their primary residence have resisted the entry of rentals into their neighborhoods and cities. Possible reasons underlying this resistance are that rentals reduce the property values, increase the property tax burdens, and raise the price of public services for these homeowners. We relate the market values of single-family homes occupied by permanent homeowners, the effective property tax rate of these homeowners, and the tax price they pay for public services to shifts in their city's housing units toward a variety of different types of rentals and second homes. Our analysis is based on large panels of Florida homes containing hundreds of thousands and millions of observations. Our results show that increases in the share of a city's housing units used as rentals or second homes reduce the home values, increase the property tax burdens, and raise the public services prices of homeowners who permanently reside in single-family homes. Impacts vary in magnitude among single-family, condominium, and mobile homes used as rentals and second homes. Estimated impacts are the strongest for share increases in single-family rentals and second homes.  相似文献   
89.
Infective lesions of bone in leprosy are of two types. In the rhinomaxillary syndrome, superficial infective changes in the bones of the maxilla are due to the presence of Mycobacterium leprae. Lytic foci in the medulla or the outer cortical surface may be due to Mycobacterium leprae at the site as granulomatous lesions. The most frequent infective bone changes in leprosy are, however, sequelae of regional anaesthesia and soft tissue ulceration. The bone lesions are due to pyogenic bacteria and the nature of these infective lesions is similar to that in non-leprous conditions. The pyogenic lesions in leprosy are restricted to the bones of the hands, feet and lower legs.  相似文献   
90.
A total of 1164 temporal bones from various cemetery sites in England were examined using a fibre optic endoscope. Eight bones were found to have evidence of otosclerosis in which proliferative new bone fixes the footplate of the stapes into the oval window, causing deafness. A prevalence of 0.9 per cent in this study is comparable with the incidence found in modern white populations and with that found in a study of 2760 Lithuanian temporal bones of various periods.  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