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   41313篇
  免费   496篇
  国内免费   1篇
财政金融   7252篇
工业经济   2468篇
计划管理   6292篇
经济学   9391篇
综合类   825篇
运输经济   225篇
旅游经济   467篇
贸易经济   8160篇
农业经济   1302篇
经济概况   4759篇
信息产业经济   44篇
邮电经济   625篇
  2021年   164篇
  2020年   312篇
  2019年   470篇
  2018年   2768篇
  2017年   2578篇
  2016年   1754篇
  2015年   434篇
  2014年   676篇
  2013年   2774篇
  2012年   1198篇
  2011年   2676篇
  2010年   2442篇
  2009年   2230篇
  2008年   2192篇
  2007年   2422篇
  2006年   655篇
  2005年   870篇
  2004年   970篇
  2003年   998篇
  2002年   758篇
  2001年   518篇
  2000年   515篇
  1999年   448篇
  1998年   432篇
  1997年   418篇
  1996年   428篇
  1995年   363篇
  1994年   369篇
  1993年   400篇
  1992年   412篇
  1991年   401篇
  1990年   329篇
  1989年   302篇
  1988年   291篇
  1987年   302篇
  1986年   323篇
  1985年   469篇
  1984年   436篇
  1983年   402篇
  1982年   376篇
  1981年   346篇
  1980年   391篇
  1979年   318篇
  1978年   271篇
  1977年   256篇
  1976年   199篇
  1975年   242篇
  1974年   195篇
  1973年   188篇
  1972年   133篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
11.
In this article the impact of technology education, as a new learning area (subject) in the curriculum, on in-service teacher education in South Africa is described in order to ascertain the extent of the impact. The research on which this article is based draws on a variety of experiences and observations in the field at grassroots level (in particular an outreach project in rural communities). The envisaged impact of technology education on South African schools, communities, teacher educators and teachers, the range of in-service teacher education that is required, and the impacts in urban and rural areas are discussed. Finally a number of concluding remarks are made about the extent of the impact of the inclusion of technology education in the new National Curriculum Statement and whether the situation has changed since the implementation of a pilot technology education project in 1998. This revised version was published online in July 2006 with corrections to the Cover Date.  相似文献   
12.
13.
The paper extends Manning's model on education and balanced growth to include labour immigration. Each immigration unit is assumed to consist of one skilled worker and some unskilled members. The optimal immigration policy which maximizes the per capita steady-state consumption of the host country is derived. We show that optimal immigration policy can reduce the steady-state skilled labour ratio. More interesting still, contrary to the widespread belief that immigration of skilled workers hurts local skilled workers, it is the unskilled local workers whose interests are threatened by optimal immigration policy.  相似文献   
14.
This article investigates the change in operating performance of firms as they make the transition from private to public ownership. A significant decline in operating performance subsequent to the initial public offering (IPO) is found. Additionally, there is a significant positive relation between post-IPO operating performance and equity retention by the original entrepreneurs, but no relation between post-IPO operating performance and the level of initial underpricing. Post-issue declines in the market-to-book ratio, price/earnings ratio, and earnings per share are also documented.  相似文献   
15.
16.
17.
The 1992–93 recession in the western states of Germany has been attributed, in substantial measure, to the macroeconomic consequences of policies to finance unification. Studies of the costs of unification have not attempted to measure the burden of the recession. We estimate a dynamic, panel model of household incomes using data from the German Socio-Economic Panel (GSOEP) and use it to forecast what these incomes would have been in 1992–94 without a recession. Using a ratio of actual to forecast incomes, we compare the relative burden of the recession across households. Our findings suggest that western households below the median income bore the brunt of the combined impact of unification and the recession of 1992–93.
JEL classification: P3, D3, E3.  相似文献   
18.
19.
This article surveys recent research of the Spanish colonial era in the Philippines since the late eighteenth century. While highlighting imperfections in our understanding, the article establishes the parameters with which the Philippine economy entered the twentieth century. It outlines the intensification of Spanish colonial rule through changes in the taxation system, particularly the expansion of forced tobacco cultivation until its abolition in 1882. Since then, the Spanish set out to further change and intensify colonial rule but contradictions in the system of colonial rule caused the effort to come to an abrupt end in 1898.  相似文献   
20.
The number of firms using alliances as part of their corporate venturing or market entry strategies has surged over the past decade. Three common reasons cited for pursuing alliances are technology convergence, market access and alliance partners' complementary resources. This paper contrasts the alliance strategies of HP and IBM, two major competitors in electronic services (i.e. Internet-based 'e- service') businesses, using the Familiarity Matrix as a display tool to portray the strategies. Whereas the HP strategy is to attempt to establish its technology infrastructure as the standard e-services infrastructure on the Internet, IBM aims to position its IBM Global Services, rather than its technology, at the center of this ecosystem.  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