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   2753篇
  免费   67篇
财政金融   628篇
工业经济   260篇
计划管理   444篇
经济学   503篇
综合类   63篇
运输经济   23篇
旅游经济   44篇
贸易经济   504篇
农业经济   146篇
经济概况   205篇
  2021年   15篇
  2020年   43篇
  2019年   67篇
  2018年   61篇
  2017年   62篇
  2016年   62篇
  2015年   25篇
  2014年   74篇
  2013年   317篇
  2012年   95篇
  2011年   101篇
  2010年   82篇
  2009年   94篇
  2008年   110篇
  2007年   93篇
  2006年   88篇
  2005年   65篇
  2004年   67篇
  2003年   60篇
  2002年   61篇
  2001年   62篇
  2000年   53篇
  1999年   46篇
  1998年   43篇
  1997年   35篇
  1996年   47篇
  1995年   30篇
  1994年   39篇
  1993年   30篇
  1992年   35篇
  1991年   43篇
  1990年   23篇
  1989年   38篇
  1988年   28篇
  1987年   34篇
  1986年   32篇
  1985年   58篇
  1984年   52篇
  1983年   38篇
  1982年   47篇
  1981年   29篇
  1980年   28篇
  1979年   25篇
  1978年   27篇
  1977年   31篇
  1976年   26篇
  1975年   28篇
  1974年   36篇
  1973年   22篇
  1971年   14篇
排序方式: 共有2820条查询结果,搜索用时 78 毫秒
1.
Recent decades have seen a fundamental shift in the nature of economic regulation in the United States. Unauthorized by congress, and largely unnoted in legal and academic circles, regulatory agencies such as the Federal Communications Commission have changed the regulatory process by linking otherwise unrelated regulatory issues. Examples include tying merger approval to firm commitments to engage in conceptually unrelated build‐outs and other projects of political importance. This linking of issues has several effects, the most prominent being (a) tying regulatory issues changes the outcomes obtained, plausibly in predictable ways; (b) tying in some circumstances allows regulators to extend their authority to issues for which they have little or no legal authority; and (c) tied regulatory bargaining fails to produce valid legal precedent for firm decision making. We provide an analysis of these conclusions by examining the increasing use of consent decrees, voluntary merger commitments, and merger conditions by the Federal Communications Commission, referencing our discussion with a simple model of joint bargaining applicable to regulatory practice.  相似文献   
2.
3.
I examine the effect of competition on the production and use of innovations using evidence from a natural experiment of policy reform, the introduction of cartel legislation in the U.K. in the late 1950’s. I compare manufacturing industries which had been collusive and were therefore affected by the policy with those that had been competitive and were not affected. The intensification of competition following the abolition of cartels caused a short‐run decrease in innovations produced, but had no significant effect in the long run. In contrast, innovations used increased both in the short run and in the long run.  相似文献   
4.
ABSTRACT

We examine gender wage gap (GWG) in Greece for 2013, by using a survey data set. Our findings show first, that the unadjusted GWG is 15.3%, while European Commission reports a value of 15%. Secondly, we derive the ‘adjusted’ GWG, using the Oaxaca and Ransom (OR) and the Juhn, Murphy and Pierce (JMP) methods to be ranging from 10% to 13.6%. Thirdly, looking into the behaviour of the full population, we find a decreasing trend for the discrimination effects, an increasing trend for the residuals effects and a ‘random’ endowments effects while moving to higher deciles. These three effects are associated to the economic crisis 2008–2015. Fourthly, our findings do not show evidence of either a ‘glass ceiling’ effect or a ‘sticky floor’ effect. Finally, that there is strong evidence that investing in higher education reduces the wage discrimination between sexes.  相似文献   
5.
6.
This paper examines the international trade of a variety of genetically modified (GM) food products over a 27-year period (1984–2011) with data from the United Nations using the tools of social network analysis. The results indicate that each of the different crops have a distinctive pattern of trade that has changed over time due to a number of different factors. Also, trade in agricultural commodities became more diversified over time, dominated less by the United States and other nations central in the trade networks and trade in the individual GM crops was stable over time. Countries maintained their trading partners for specific crops, despite the adoption of the genetically modified varieties. The economic implications of these results are discussed for specific countries.  相似文献   
7.
Journal of Productivity Analysis - An industry is an ensemble of individual firms (decision making units) which may or may not interact with each other. Similarly, an economy is an ensemble of...  相似文献   
8.
Atlantic Economic Journal - Japanese exports did not immediately react to the depreciations of the yen after a change in the economic policy framework in 2012, with the launching of Abenomics. This...  相似文献   
9.
The growing internet concern (IC) over the crude oil market and related events influences market trading, thus creating further instability within the oil market itself. We propose a modeling framework for analyzing the effects of IC on the oil market and for predicting the price volatility of crude oil’s futures market. This novel approach decomposes the original time series into intrinsic modes at different time scales using bivariate empirical mode decomposition (BEMD). The relationship between the oil price volatility and IC at an individual frequency is investigated. By utilizing decomposed intrinsic modes as specified characteristics, we also construct extreme learning machine (ELM) models with variant forecasting schemes. The experimental results illustrate that ELM models that incorporate intrinsic modes and IC outperform the baseline ELM and other benchmarks at distinct horizons. Having the power to improve the accuracy of baseline models, internet searching is a practical way of quantifying investor attention, which can help to predict short-run price fluctuations in the oil market.  相似文献   
10.
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