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   545篇
  免费   37篇
  2023年   2篇
  2020年   12篇
  2019年   14篇
  2018年   17篇
  2017年   30篇
  2016年   23篇
  2015年   19篇
  2014年   12篇
  2013年   151篇
  2012年   19篇
  2011年   21篇
  2010年   15篇
  2009年   18篇
  2008年   12篇
  2007年   17篇
  2006年   14篇
  2005年   6篇
  2004年   15篇
  2003年   16篇
  2002年   6篇
  2001年   6篇
  2000年   5篇
  1999年   9篇
  1998年   7篇
  1997年   4篇
  1996年   3篇
  1995年   5篇
  1994年   3篇
  1993年   6篇
  1992年   6篇
  1991年   10篇
  1990年   4篇
  1989年   8篇
  1988年   3篇
  1987年   2篇
  1986年   5篇
  1984年   10篇
  1983年   3篇
  1982年   5篇
  1980年   5篇
  1979年   3篇
  1978年   3篇
  1977年   3篇
  1974年   2篇
  1973年   2篇
  1972年   2篇
  1969年   2篇
  1954年   2篇
  1949年   2篇
  1948年   1篇
排序方式: 共有582条查询结果,搜索用时 15 毫秒
31.
Scholars of Canadian politics have noted that the Prime Minister plays a dominant role in shaping domestic and foreign policy. This article examines the role of the Prime Minister in shaping Canadian foreign policy toward Israel since 1993 and shows the central role that the Prime Minister has played on this issue. It specifically argues that Stephen Harper produced a noticeable pro-Israel shift in Canada’s policy and moved Canada away from the multilateralist approach pursued by Jean Chrétien and, to a lesser extent, Paul Martin. But this article also argues that Justin Trudeau has so far embraced a policy that largely reinforces the approach of Harper rather than rejecting it. Thus, one practical implication of the dominant role of the Prime Minister in shaping Canada’s policy toward Israel is that Canada has become more one-sided in its support of Israel in the past two decades.  相似文献   
32.
33.
34.
In this paper, we examine how government policy affects the sorting of industries across jurisdictions using the New Markets Tax Credit (NMTC) program. When estimating the impact of the tax credit on business activity, there are likely to be unobservable local characteristics that are correlated with business location decisions that would cause OLS estimates to be biased. To control for this endogenous selection, we use a plausibly exogenous eligibility cutoff and compare census tracts that are just eligible for the NMTC program to those that are just ineligible. Using data from the Dun and Bradstreet MarketPlace Files, we find that eligibility for the NMTC program caused industries to sort across eligible and noneligible tracts. In particular, we find that there is an increase in retail employment, both among new businesses and existing businesses, and an increase in manufacturing employment at existing businesses in tracts that were eligible for the program. However, we find negative effects on employment at new firms in the wholesale and transportation industries, and decreases in the number of new firms in FIRE and services. Policy makers should be cognizant of these results, as the implications of the sorting across industries on local areas must be considered to design effective policy.  相似文献   
35.
This paper examines the role of accelerator programmes in promoting transnational entrepreneurship. Designed to assist the growth of start-ups by providing seed finance and structured entrepreneurship support, these programmes are now a prominent feature in many entrepreneurial ecosystems around the world. Drawing on in-depth qualitative evidence focused on one particular programme, the paper shows accelerators play an important intermediary or ‘brokerage mechanism’ providing start-ups with enhanced relational connections and networks. Transnational entrepreneurs attracted to these programmes are highly focused on exploiting these networks whilst maintaining multiple levels of embeddedness in various contexts to maximize the opportunities afforded by accelerators. While many governments are attempting to replicate accelerators programmes within the public sector, the paper concludes that such attempts may prove problematic within weaker entrepreneurial ecosystems.  相似文献   
36.
37.
38.
Military might is widely recognized as having been a key element in the Mercian kings’ ability to forge and maintain a large kingdom in midland England in and after the seventh century. The paper argues that its basis was a network of fortified places – all major royal settlements that were given substantial defences in the eighth and early ninth centuries – and a systemic mechanism for manning them. The archaeological evidence of these defences at Hereford, Tamworth and Winchcombe is reviewed; the probable locations of other such early fortified places in midland England are considered; and the significance of this burghal system for our understanding of ‘the supremacy of the Mercian kings’ is weighed.  相似文献   
39.
40.
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