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   143280篇
  免费   4023篇
  国内免费   1篇
财政金融   26980篇
工业经济   12080篇
计划管理   23048篇
经济学   31203篇
综合类   1507篇
运输经济   1037篇
旅游经济   2608篇
贸易经济   24506篇
农业经济   6456篇
经济概况   17582篇
信息产业经济   7篇
邮电经济   290篇
  2021年   890篇
  2020年   1714篇
  2019年   2497篇
  2018年   2549篇
  2017年   2668篇
  2016年   2864篇
  2015年   2200篇
  2014年   3531篇
  2013年   15902篇
  2012年   4376篇
  2011年   4430篇
  2010年   3931篇
  2009年   4564篇
  2008年   4193篇
  2007年   3533篇
  2006年   3808篇
  2005年   3779篇
  2004年   3366篇
  2003年   3157篇
  2002年   3057篇
  2001年   2829篇
  2000年   2749篇
  1999年   2587篇
  1998年   2478篇
  1997年   2484篇
  1996年   2334篇
  1995年   2146篇
  1994年   2163篇
  1993年   2127篇
  1992年   2174篇
  1991年   2081篇
  1990年   1929篇
  1989年   1765篇
  1988年   1686篇
  1987年   1700篇
  1986年   1771篇
  1985年   2550篇
  1984年   2460篇
  1983年   2253篇
  1982年   2118篇
  1981年   2015篇
  1980年   1989篇
  1979年   1916篇
  1978年   1712篇
  1977年   1667篇
  1976年   1419篇
  1975年   1310篇
  1974年   1215篇
  1973年   1211篇
  1972年   911篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
151.
The Local Whittle Estimator of Long-Memory Stochastic Volatility   总被引:1,自引:0,他引:1  
We propose a new semiparametric estimator of the degree of persistencein volatility for long memory stochastic volatility (LMSV) models.The estimator uses the periodogram of the log squared returnsin a local Whittle criterion which explicitly accounts for thenoise term in the LMSV model. Finite-sample and asymptotic standarderrors for the estimator are provided. An extensive simulationstudy reveals that the local Whittle estimator is much lessbiased and that the finite-sample standard errors yield moreaccurate confidence intervals than the widely-used GPH estimator.The estimator is also found to be robust against possible leverageeffects. In an empirical analysis of the daily Deutsche Mark/USDollar exchange rate, the new estimator indicates stronger persistencein volatility than the GPH estimator, provided that a largenumber of frequencies is used.  相似文献   
152.
Using data for a sample of Malaysian stocks that are traded in both Malaysia and Singapore, we show that the turnover rate (trading volume relative to shares held) is significantly higher in the foreign market than in the domestic market. We also find that ownership of cross–listed shares by foreign investors is not motivated by diversification benefits. Instead, we find that the proportion of a firm's shares held in Singapore is directly related to the firm's level of systematic risk.  相似文献   
153.
154.
This article focuses on the housing issues of rural migrants arising from urbanization, with particular reference to chengzhongcun, a topic with considerable impact on policymaking. An attempt is made to understand the underlying rationale of self‐help in housing and the important role of chengzhongcun in sheltering rural migrants in the context of China's rural‐urban dichotomy. As demonstrated in this study, chengzhongcun accommodate, with little in the way of government resources and assistance, millions of rural migrants because of their social accessibility and affordability. While not denying their social problems, we argue that chengzhongcun in fact act as an innovative and positive agent to promote urbanization in present day China by housing massive numbers of rural migrants and assimilating them into cities. Current government policies towards chengzhongcun have generated a wide range of interest conflicts and confrontations. The consequences of such conflicts show that the government policies were problematic and unworkable, as they violated basic market principles as well as citizen rights. Policy strategy towards the redevelopment of chengzhongcun must acknowledge their credibility in the Chinese road to urbanization and requires more thoughtful and prudent consideration of migrants' demands for affordable housing.  相似文献   
155.
156.
157.
In the UK, 1950-75 was a lively period in the long-running debates between proponents of absorption and marginal costing. In the nexus of competing interests, management accountants advocated and defended rival costing systems with much vigour and passion. Expressed in the language of the times, these debates were 'battles' in the costing 'war'. We focus on these battles, analysing the various forces that operated upon the combatants, and locate them in the wider costing war. We conclude that no final resolution of the conflict was achieved in the twentieth century, nor is one likely in the foreseeable future.  相似文献   
158.
The increasing popularity of public private partnerships (PPPs) thrusts on to centre stage the inherent tension between accountability and transparency on the one hand, and efficiency and commerciality on the other. This paper explores a number of accountability issues that are exacerbated by a public private partnership structure. The organisational structure of a PPP, where much of the activity associated with the delivery of a public service is embedded in a private-sector entity, increases the likelihood that public scrutiny of decisions and actions is significantly inhibited  相似文献   
159.
This article tests three common budgetary decision–making theories in the US states. Pooled time series cross–section analysis is used from 1960 to 1996 to test the garbage can theory and incrementalism, and from 1989 to 1996 to test various theories of rational budgeting. The results demonstrate that there was some support for all three theories in terms of their impact on reducing state budget outputs. Rational budgeting reduces expenditures in aggregate, incrementalism has relatively low explanatory power below the aggregates, and garbage can budgeting is more prevalent in functional areas than for government as a whole. These findings imply that the future research agenda on budgetary decision–making theories should focus more on a system–wide approach, which takes into account many of the characteristics of all three rival models of decision–making, rather than exclusively focusing on each one singly.  相似文献   
160.
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