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   141846篇
  免费   3869篇
  国内免费   2篇
财政金融   26669篇
工业经济   11813篇
计划管理   22996篇
经济学   31041篇
综合类   1552篇
运输经济   970篇
旅游经济   2504篇
贸易经济   24224篇
农业经济   6256篇
经济概况   17391篇
信息产业经济   7篇
邮电经济   294篇
  2021年   854篇
  2020年   1641篇
  2019年   2390篇
  2018年   2488篇
  2017年   2630篇
  2016年   2775篇
  2015年   2110篇
  2014年   3426篇
  2013年   15371篇
  2012年   4318篇
  2011年   4402篇
  2010年   3886篇
  2009年   4490篇
  2008年   4129篇
  2007年   3527篇
  2006年   3701篇
  2005年   3711篇
  2004年   3290篇
  2003年   3050篇
  2002年   2991篇
  2001年   2779篇
  2000年   2712篇
  1999年   2570篇
  1998年   2454篇
  1997年   2458篇
  1996年   2340篇
  1995年   2147篇
  1994年   2168篇
  1993年   2127篇
  1992年   2198篇
  1991年   2108篇
  1990年   1956篇
  1989年   1757篇
  1988年   1692篇
  1987年   1696篇
  1986年   1794篇
  1985年   2569篇
  1984年   2480篇
  1983年   2300篇
  1982年   2147篇
  1981年   2066篇
  1980年   2034篇
  1979年   1973篇
  1978年   1717篇
  1977年   1658篇
  1976年   1416篇
  1975年   1316篇
  1974年   1203篇
  1973年   1199篇
  1972年   915篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
121.
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   
122.
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   
123.
124.
125.
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   
126.
This paper aims to identify both the Greek branch and the central division employees' perceptions towards implications of electronic banking adoption and explore whether there are any differences between them. To this end, based on 14 potential implications recognised in the literature review, a questionnaire was designed and completed by 613 bank employees. The analysis showed that perceptions vary in relation to respondents' working position. Additionally, there are indications that the identified differences are greater if they are linked with the respondents' working experience and educational qualifications, as well as the size of the financial institution. In conclusion, the paper discusses the strategic implications of the findings.  相似文献   
127.
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   
128.
129.
Major tax reform to simplify the UK tax system is possible. Merging income taxes, social security taxes and corporation tax into only a single flat-rate of tax on all incomes would be a radical start. Avoiding taxes on income and expenditure which are 'too high' requires major reductions in government spending, mainly on the welfare state. Given the political will, over a period of years we really can hugely improve the UK tax system.  相似文献   
130.
The decline in private health insurance coverage over the period 1989–95 is analysed using the ABS National Health Surveys. Individuals' health status and health risk behaviours are found to be significant determinants of their decision to purchase private health insurance. At a point in time, the pool of the insured is very heterogeneous, with a mix of both good and bad health risks. It is found that the decline in insurance coverage over the period 1989–95 coincided with an increase in the degree of 'adverse selection' within the insured population.  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