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   143847篇
  免费   4800篇
  国内免费   1篇
财政金融   27085篇
工业经济   11964篇
计划管理   23488篇
经济学   31512篇
综合类   1523篇
运输经济   1058篇
旅游经济   2537篇
贸易经济   25041篇
农业经济   6392篇
经济概况   17748篇
信息产业经济   8篇
邮电经济   292篇
  2021年   910篇
  2020年   1796篇
  2019年   2798篇
  2018年   2675篇
  2017年   2924篇
  2016年   3065篇
  2015年   2418篇
  2014年   3691篇
  2013年   15868篇
  2012年   4584篇
  2011年   4592篇
  2010年   4058篇
  2009年   4565篇
  2008年   4200篇
  2007年   3553篇
  2006年   3776篇
  2005年   3748篇
  2004年   3352篇
  2003年   3101篇
  2002年   3037篇
  2001年   2814篇
  2000年   2759篇
  1999年   2569篇
  1998年   2463篇
  1997年   2449篇
  1996年   2308篇
  1995年   2127篇
  1994年   2141篇
  1993年   2120篇
  1992年   2172篇
  1991年   2096篇
  1990年   1936篇
  1989年   1738篇
  1988年   1684篇
  1987年   1690篇
  1986年   1778篇
  1985年   2544篇
  1984年   2428篇
  1983年   2247篇
  1982年   2097篇
  1981年   2005篇
  1980年   1971篇
  1979年   1913篇
  1978年   1702篇
  1977年   1645篇
  1976年   1411篇
  1975年   1305篇
  1974年   1201篇
  1973年   1195篇
  1972年   907篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
131.
Small Business Economics - The human personality predicts a wide range of activities and occupational choices—from musical sophistication to entrepreneurial careers. However, which method...  相似文献   
132.
Using a panel dataset of 105 developing countries for the period 2003–15, this paper assesses the effects of Aid for Trade (AfT) on greenfield FDI flows to the aid‐recipient countries. Particularly, this paper classifies the total dollar value of greenfield FDI flows to each recipient country in terms of four different layers: the extensive and intensive margins of projects as well as the extensive and intensive margins of source countries. Applying the system GMM estimator, this paper finds that AfT not only increases the dollar value of FDI flows to the recipient countries but also helps diversify the greenfield projects and source countries. In addition, this paper finds that AfT has a greater effect for greenfield FDI from donor (developed) countries than from non‐donor (developing) countries. Among the three components of AfT, aid for trade‐related infrastructure and aid for trade policy regulations are found to have positive links with greenfield FDI, irrespective of source‐country groups, yet their effects are larger for developed source countries. In contrast, aid for building productive capacity hinders greenfield FDI flows from non‐donor countries, while it promotes greenfield FDI from donor countries. We offer some explanations for this finding.  相似文献   
133.
134.
This paper applies the Least Absolute Shrinkage and Selection Operator (LASSO) to make rolling one‐minute‐ahead return forecasts using the entire cross‐section of lagged returns as candidate predictors. The LASSO increases both out‐of‐sample fit and forecast‐implied Sharpe ratios. This out‐of‐sample success comes from identifying predictors that are unexpected, short‐lived, and sparse. Although the LASSO uses a statistical rule rather than economic intuition to identify predictors, the predictors it identifies are nevertheless associated with economically meaningful events: the LASSO tends to identify as predictors stocks with news about fundamentals.  相似文献   
135.
Has the Chinese economy approached the ‘Lewisian turning point’ that marks the ending of the initial phase of industrial transformation fuelled by surplus labour? In this paper we undertake an interpretative survey of the literature on this issue, in the context of China's labour market conditions prior to the reforms and structural change of the past three decades. The available evidence is mixed, and our assessment makes a strong case for probing institutional constraints to labour mobility from an economy‐wide perspective, going beyond the confines of the rural economy.  相似文献   
136.
137.
138.
139.
This paper presents the case for and the evidence in favour of passive investment strategies and examines the major criticisms of the technique. I conclude that the evidence strongly supports passive investment management in all markets—small–capitalisation stocks as well as large–capitalisation equities, US markets as well as international markets, and bonds as well as stocks. Recent attacks on the efficient market hypothesis do not weaken the case for indexing.  相似文献   
140.
The present paper was inspired by and is a response to the Rola-Rubzen, Hardaker and Dillon paper 'Agricultural economists and world poverty: progress and prospects' (Rola-Rubzen et al. 2001). It is agreed that the position of agricultural economists in foreign aid and poverty programs has declined over recent decades. Such a feeling of guilt and remorse expressed by the above authors does indeed create considerable 'angst'. A major reason for this state of affairs lies in 'the flavour of the month' approach of the development agencies. These include women in development, gender-based farming systems research, household nutrition and food security, people participation, and targeting the poorest of the poor. These fads have driven disciplinary considerations to the wall and the more widely-defined objectives have reduced the drive for economic efficiency. We argue there is still a place for better designed and delivered assistance programs within the wider framework of assistance that has become fashionable. Greater application of institutional principles in both the political processes associated with assistance and the implementation agencies would improve the outcomes of many projects. Particular attention would need to be given to the interface between the development agencies and recipient governments. The present paper picks up on the market failure aspects of agriculture's rather poor contribution to development, and develops a wider perspective in terms of the new institutional economics and a continuing role for the agricultural economist.  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