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   29980篇
  免费   353篇
  国内免费   1篇
财政金融   5008篇
工业经济   1864篇
计划管理   4738篇
经济学   6762篇
综合类   648篇
运输经济   100篇
旅游经济   200篇
贸易经济   6659篇
农业经济   668篇
经济概况   3064篇
信息产业经济   46篇
邮电经济   577篇
  2021年   74篇
  2020年   138篇
  2019年   190篇
  2018年   2578篇
  2017年   2336篇
  2016年   1492篇
  2015年   253篇
  2014年   354篇
  2013年   1328篇
  2012年   811篇
  2011年   2396篇
  2010年   2166篇
  2009年   1913篇
  2008年   1847篇
  2007年   2244篇
  2006年   386篇
  2005年   627篇
  2004年   753篇
  2003年   847篇
  2002年   549篇
  2001年   309篇
  2000年   316篇
  1999年   225篇
  1998年   252篇
  1997年   238篇
  1996年   245篇
  1995年   205篇
  1994年   212篇
  1993年   208篇
  1992年   253篇
  1991年   233篇
  1990年   188篇
  1989年   161篇
  1988年   156篇
  1987年   195篇
  1986年   204篇
  1985年   261篇
  1984年   283篇
  1983年   263篇
  1982年   231篇
  1981年   230篇
  1980年   223篇
  1979年   234篇
  1978年   147篇
  1977年   139篇
  1976年   101篇
  1975年   130篇
  1974年   93篇
  1973年   93篇
  1971年   77篇
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
81.
Summary  Competition authorities are increasingly measuring the effects of their enforcement actions, seeking a robust justification for the proliferation of competition policy. We highlight the importance of identifying the right counterfactual against which to measure effects, and set out the relevant categories of costs and benefits. We then explore how a balance can be struck between the benefits and inherent limitations of these measurement exercises. Relatively crude analyses of cartel action benefits can be sufficient to achieve public legitimacy for competition policy. Assessing the effects of merger and conduct inquiries is often ambiguous, but could be used to improve decision-making processes. Director and Managing Consultant, respectively, at Oxera, Oxford and London. The valuable comments of Fod Barnes, Kerry Hughes and an anonymous referee are gratefully acknowledged. The opinions expressed in this article are those of the authors alone.  相似文献   
82.
83.
84.
85.
We employ panel data as well as country-specific models to uncover empirically the determinants of current account imbalances. We find evidence of slope heterogeneity likely rendering the fixed-effect estimator inconsistent. Mean group estimation is followed to overcome the latter difficulty. Both estimation techniques are evaluated by means of in- and out-of-sample criteria. The mean group estimator outperforms the fixed-effect approach and, moreover, only three economic variables are found to impact on the current account balance significantly. These are the government budget balance, the domestic output gap and the changes of the terms of trade. We finally propose a parsimonious dynamic model of the current account, including only these variables and illustrate that it has similar predictive accuracy as country-specific benchmark models. JEL no. F32, C23, C53  相似文献   
86.
回顾1.需求7月份,世界主要经济体跌幅趋缓,显现经济复苏迹象。中国经济更是率先走出低迷,增长提速,第二季度国内生产总值同比增长7.9%。基础设施投资起到了决定性的作用。7月份固定资产投资延续上半年的趋  相似文献   
87.
88.
A survey conducted in Mississippi, Texas, Indiana, and Nebraska elicited producers' preferences for various farm policy changes. This permitted examination of the diversity of preferences that single-state studies have not allowed. Five policy choices, including deficiency payments, loan programs, crop insurance, export programs, and disaster payments were examined. Logit model results predicting producer preferences for each of the five dichotomous policy choices are reported. Explanatory variables based on expected utility theory such as risk aversion, price and yield variability, and price–yield correlation are significant in various models.  相似文献   
89.
The role of tourism is of vital economic importance, particularly for small countries with a privileged geographical location and favourable weather conditions. This paper examines the importance of tourism as a conditioning factor for higher regional growth in Portugal by employing the conditional convergence hypothesis of Barro and Sala-i-Martin, associated with the endogenous growth theory. The panel data estimation approach provides evidence of the positive impact of tourism (through the accommodation capacity) on the growth in per-capita income among the Portuguese regions, increasing the rate of convergence. Therefore, tourism can be considered as an alternative source for stimulating higher regional growth in Portugal, if the supply characteristics of this sector are improved.  相似文献   
90.
This paper focuses on the development of a theoretical scheme describing the transformation of primary incomes into end consumption and savings in the Russian economy. This scheme is basically a system of interrelated tables reflecting the distribution of primary incomes across the institutional sectors and their further reallocation and use. The scheme makes allowances for the specific features of the Russian economy and existing statistics. In terms of methodology, it is coordinated with the interindustry balance in current buyer prices and, from the theoretical standpoint, describes the connection between Quadrant II and Quadrant III of the balance. Therefore, the proposed system of tables is treated in the paper as Quadrant IV of the interindustry balance. The theoretical scheme is used by the authors as a necessary basis for constructing an empirical model of the relationship between value added and end product, which will be published in the next issue of this journal.  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