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   1334篇
  免费   299篇
  2023年   2篇
  2022年   2篇
  2021年   15篇
  2020年   11篇
  2019年   104篇
  2018年   74篇
  2017年   74篇
  2016年   124篇
  2015年   84篇
  2014年   86篇
  2013年   272篇
  2012年   86篇
  2011年   99篇
  2010年   76篇
  2009年   51篇
  2008年   68篇
  2007年   65篇
  2006年   45篇
  2005年   19篇
  2004年   36篇
  2003年   30篇
  2002年   22篇
  2001年   22篇
  2000年   32篇
  1999年   4篇
  1998年   15篇
  1997年   18篇
  1996年   13篇
  1995年   15篇
  1994年   11篇
  1993年   4篇
  1992年   5篇
  1991年   2篇
  1990年   2篇
  1987年   4篇
  1986年   5篇
  1985年   6篇
  1983年   1篇
  1982年   4篇
  1980年   3篇
  1979年   2篇
  1978年   1篇
  1977年   6篇
  1976年   2篇
  1975年   2篇
  1974年   2篇
  1971年   1篇
  1969年   1篇
  1968年   1篇
  1951年   1篇
排序方式: 共有1633条查询结果,搜索用时 15 毫秒
101.
Despite the prevalence of state‐level commissions convened to make policy recommendations, research to date has not systematically investigated the ways in which these bodies impact policy or degree to which state‐level interest groups can use these institutions in that process. We argue that less powerful groups will favor these mechanisms and use them to get issues onto the institutional agenda and to increase the likelihood of legislative success. We also suggest that traditionally powerful groups will oppose the creation of reform‐minded task forces, but will likely use them to hinder policy change once they are formed. We test this assertion in an analysis of the creation and recommendations of task forces convened to study autism insurance mandates, as well as the eventual adoption of such mandates, in the American states between 2001 and 2010. The results suggest that public and industry groups influence the formation and recommendations of task forces, but that the latter appears to have a relatively larger impact. They also suggest that a task force recommendation has a large impact on the likelihood of adopting an autism insurance mandate and that neither the insurance industry nor autism advocacy groups have a direct influence on adoption after controlling for the presence of a recommendation.  相似文献   
102.
This paper documents court‐imposed bail and sentencing conditions with spatial dimensions, such as red zones, no contact conditions, curfews and prohibitions to demonstrate, issued in the context of criminal proceedings. These conditional orders, which are growing in importance and have a significant impact on the lives of marginalized groups of people, have not received the attention they deserve in the literature. As opposed to better publicized forms of spatial regulation such as legislation or policing strategies, these conditional orders are a distinctive form of spatial tactic that rely on ancient and routinized rules of criminal procedure and the practices of the courts. In order to understand this spatial tactic, and its impact on marginalized people's rights and uses of spaces, we argue that it is necessary to pay attention to the legal rationalities, knowledge and practices that sustain them.  相似文献   
103.
ABSTRACT We investigate the relationship between income tax rate variation and internal migration for the unique case of Switzerland, whose system of determining tax rates primarily at the community level results in enough variation to permit analysis of their influence on migration. Specifically, using Swiss census data, we analyze migratory responses to tax rate variations for various groups defined by age, education, and nationality/residence permit. The results suggest that young Swiss college graduates are most sensitive to tax rate differences, but the estimated effects are not large enough to offset the revenue‐increasing effect of a rise in tax rate. The migratory responses of foreigners and other age‐education groups are even smaller, and reverse causation seems negligible.  相似文献   
104.
105.
Can age, period and cohort effects help explain support for Quebec sovereignty? Previous work on this question has focused mostly on the effects of age and cohort. We contribute to this debate by adding a period perspective. As such, our study is the first to investigate the impact of age, cohort and period effects in a single study of opinion towards sovereignty in Quebec. We take advantage of an original dataset that includes survey data collected between 1985 and 2012. We use these data to examine the impact of age, birth year and survey year on support for this constitutional option among francophone Quebeckers. Our results are in line with previous work: we show that younger Quebeckers are more likely to support sovereignty, and that some cohorts – namely, respondents born between 1945 and 1959 – are also more likely to favour this option. Perhaps more surprisingly, we find that specific events are comparatively the most important factor to explain fluctuations in Quebeckers' attitudes towards sovereignty.  相似文献   
106.
Recent excavations in south‐eastern Wadi ‘Araba in Jordan have revealed the first early Islamic‐period copper‐smelting site known in the eastern side of the valley, which extends south of the Dead Sea to the Gulf of ‘Aqaba. Five test pits were excavated in 2012 at Khirbat al–Mana‘iyya, a prominent copper‐smelting camp in south‐eastern Wadi ‘Araba, Jordan. The results of these excavations demonstrate that the site was primarily active in the seventh–ninth century AD. Its distance from the copper sources of south‐west ‘Araba suggests that its location was chosen based on proximity to wood and water resources, rather than copper ore deposits. The discovery that the site dates to the early Islamic period has implications for previous and future work in south‐east ‘Araba. In particular, it challenges the common—until now—view of the region as virtually devoid of settlement during this period.  相似文献   
107.
108.
Human skeletal remains from the Neolithic sites BHS18 in the interior of the Sharjah Emirate and the Neolithic shell midden UAQ2 (Umm al‐Quwain) on the coast of the Persian Gulf (United Arab Emirates, UAE) were analysed for their isotope ratios of strontium (87Sr/86Sr) and oxygen (18O/16O). The results are not in agreement with earlier assumptions about a Neolithic nomadism between inland regions and the south‐eastern coast of the Persian Gulf. Existing evidence of nomadic movements of the people from BHS18 most possibly refers to transhumance within the mountains in the hinterland. The strontium isotope measurements on human skeletons from UAQ2 on the contrary indicate uninterrupted residence of this population on the coast. Nevertheless, evidence was found of individual mobility between inland regions and the coast.  相似文献   
109.
110.
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