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   19535篇
  免费   496篇
  国内免费   1篇
财政金融   3879篇
工业经济   1323篇
计划管理   3296篇
经济学   4602篇
综合类   220篇
运输经济   127篇
旅游经济   279篇
贸易经济   3312篇
农业经济   908篇
经济概况   2002篇
邮电经济   84篇
  2023年   135篇
  2021年   147篇
  2020年   286篇
  2019年   343篇
  2018年   483篇
  2017年   618篇
  2016年   531篇
  2015年   327篇
  2014年   475篇
  2013年   2098篇
  2012年   579篇
  2011年   576篇
  2010年   542篇
  2009年   582篇
  2008年   483篇
  2007年   468篇
  2006年   423篇
  2005年   404篇
  2004年   333篇
  2003年   399篇
  2002年   350篇
  2001年   338篇
  2000年   379篇
  1999年   309篇
  1998年   332篇
  1997年   330篇
  1996年   315篇
  1995年   306篇
  1994年   317篇
  1993年   303篇
  1992年   338篇
  1991年   350篇
  1990年   279篇
  1989年   226篇
  1988年   239篇
  1987年   220篇
  1986年   253篇
  1985年   363篇
  1984年   348篇
  1983年   298篇
  1982年   322篇
  1981年   337篇
  1980年   285篇
  1979年   281篇
  1978年   257篇
  1977年   185篇
  1976年   189篇
  1975年   196篇
  1974年   149篇
  1973年   166篇
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
1.
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   
2.
I examine the effect of reform on telecom performance using a second-generation regulatory framework index and panel data techniques to test how regulatory governance affected sector performance in 22 Latin American countries during the period 1980–1997. Sound regulatory governance in telecommunications has a positive impact on network expansion and efficiency, in both the static and dynamic specifications. Openness of markets to competition and divestment of former state-owned telco operators also contributed positively to better sector performance. The dynamic specification shows that past performance has its own strong effect on present (and perhaps future) performance.  相似文献   
3.
This article examines the demographic and geographical importance of wealthy middle-class women. It argues that in certain towns and cities, notably London, such women were of sufficient importance to merit attention in their own right. Drawing upon a sample of wills, it describes the types of wealth owned by these women. By examining women's investment in government securities, it argues that women's wealth was of crucial importance to the British state. Its findings challenge conventional understandings of the relationships between gender ideology, wealth holding, and economic development.  相似文献   
4.
5.
The performance of service industries in Canada has been lower than that of good industries over the last four decades, with noticeable exceptions such as for railways and telecommunication carriers. Service industries were less economically (and technically) efficient in that they generated less output value (quantity) per hour worked (level and growth) or per combined unit of labour and capital (multifactor productivity growth) than good industries. The relative output price of services declined slightly over time compared with goods. At the disaggregated level, changing relative output prices were substantial and proved to be an important factor explaining the relative satisfactory economic performance of many service industries despite their low technical performance. Nevertheless, the output share of service industries increased over that period, sustained, mainly, by the growing recourse of all firms to outsourcing of services.  相似文献   
6.
许多情况说明,用于组织中数据存储的消费已经成爆炸状态。产生这种情况的主要因素是电子邮件和电子商务对数据的质量和数量的要求提高了,并且这种数据大部分是分散的、非结构性的,这就增加了对组织中数据管理的要求。本文是在澳大利亚进行的一次调查的基础上做出的,该调查是关于组织中如何处理数据增长和由于数据增长所带来的问题。调查的结果显示人们对该问题表现出高度的关注,同时显示出一种乐观的趋势,即技术将对未来出现的各种各样的问题提供解决方案。  相似文献   
7.
8.
In this paper we will analyze the relationship between the value and duration moments of a cash flow and movements in the yield curve. We will show that for changes in the yield curve which can be related to tn , the 1st order changes in the net present value of a cash flow are linearly dependent on the n + lth duration moments, and that the 2nd order changes are dependent on the sum of duration moments of order 2 n + 1 and 2 n + 2. We will use this relationship to tilt tracking portfolios so as to protect them against specific changes in the yield curve.  相似文献   
9.
10.
The paper highlights the main drivers for merger policy reform in the European Union, including the consequences of the recent appeal court reverses. It discusses some of the substantive and procedural issues that the reform package should address, and outlines the reforms in progress. The author concludes that much of the reform package will be beneficial, but some important opportunities have been missed in this inevitably patchwork process.  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