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   32233篇
  免费   785篇
  国内免费   1篇
财政金融   5683篇
工业经济   2349篇
计划管理   5453篇
经济学   7402篇
综合类   329篇
运输经济   224篇
旅游经济   518篇
贸易经济   5153篇
农业经济   1517篇
经济概况   4316篇
邮电经济   75篇
  2021年   201篇
  2020年   352篇
  2019年   483篇
  2018年   677篇
  2017年   678篇
  2016年   662篇
  2015年   452篇
  2014年   684篇
  2013年   3112篇
  2012年   943篇
  2011年   1019篇
  2010年   791篇
  2009年   932篇
  2008年   965篇
  2007年   852篇
  2006年   800篇
  2005年   778篇
  2004年   787篇
  2003年   735篇
  2002年   650篇
  2001年   658篇
  2000年   647篇
  1999年   569篇
  1998年   569篇
  1997年   536篇
  1996年   532篇
  1995年   475篇
  1994年   527篇
  1993年   531篇
  1992年   491篇
  1991年   523篇
  1990年   472篇
  1989年   399篇
  1988年   401篇
  1987年   395篇
  1986年   413篇
  1985年   582篇
  1984年   547篇
  1983年   544篇
  1982年   536篇
  1981年   467篇
  1980年   454篇
  1979年   464篇
  1978年   395篇
  1977年   349篇
  1976年   280篇
  1975年   273篇
  1974年   255篇
  1973年   244篇
  1972年   200篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
31.
The paper uses a three-factor (capital, low- and high-skill labor), two-household (low- and high-skill individuals), two-sector trade model to analyze the determinants of voter attitudes towards immigration under direct democracy, and to identify factors that would be coherent with both the observed increase in the skilled–unskilled wage differential and the stiffening attitudes towards low-skill capital-poor immigration. If the import-competing sector is intensive in the use of low-skill labor, and capital is the middle factor, an improvement in the terms of trade or neutral technical progress in the exporting sector leads nationals to oppose immigration of capital-poor low-skill households. An increase in income inequality is also likely to stiffen attitudes towards this type of capital-poor, low-skill immigration prevalent in Europe until recently.  相似文献   
32.
Abstract The economic environment in which Canadian manufacturing firms operate has changed substantially over the last 40 years. Technological changes, new regulations, deregulation, and exogenous economic shocks all have been important aspects of this economic environment. In this article, we show how to include such changes in the economic environment faced by the firms in a behavioural model that includes the investment decision of the firm under uncertainty. Assumptions regarding the expectation formation process and technology are kept minimal. We estimate the effects of innovations such as the free trade agreement, the foreign investment review agency, and the federal environmental policy on the economic decisions of fifteen Canadian manufacturing sectors. JEL Classification: D24
Choix de technologies et réglementation: le cas des secteurs manufacturiers canadiens Au cours des 40 dernières années, l'environnement économique des firmes manufacturières canadiennes s'est grandement transformé. Que ce soit à cause du changement technologique, de la réglementation, de vagues de déréglementation ou de chocs économiques exogènes, les firmes ont dû s'adapter en modifiant leur technologie. Dans cet article, nous montrons comment prendre en compte les changements de l'environnement économique des firmes dans le cadre d'un modèle décisionnel de la firme en incertitude avec investissement. Les hypothèses concernant la technologie et les anticipations sont aussi générales que possible. Nous estimons l'effet qu'ont eu l'accord de libre échange, l'agence de tamisage des investissements étrangers et la politique environnementale fédérale sur les choix de technologies des firmes de quinze secteurs manufacturiers canadiens.  相似文献   
33.
34.
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   
35.
36.
The introduction of traffic management schemes has been one response of the National Parks to the problem of ever-increasing car-borne visitors and the consequent damage caused to the rural environment. By reviewing these schemes and by determining and explaining attitudes towards one particular traffic management experiment, the paper aims to deduce lessons for future policy. The analysis, based on two visitor surveys, suggests that the likelihood of success is improved when schemes are integrated, containing both ‘carrot’ and ‘stick’ elements. Since public perceptions are also found to be pivotal to its success, appropriate marketing of a scheme is vital. The paper concludes, however, that to achieve the fundamental objective of greater accessibility with less mobility, a more wide-ranging marketing effort is required intended to engender a sea change in attitude towards both the car and public transport.  相似文献   
37.
38.
In social project appraisal, the policy profile of both distributional welfare weights and the social discount rate has risen considerably in recent years. This fact has important implications for the allocation of funds to social projects and policies in countries, and in unions of countries such as the EU. A key component in the formulae for both welfare weights and the social discount rate is the elasticity of marginal utility of consumption, e. A critical review of existing evidence on e suggests that the UK Treasury's preferred value of unity is too low. New evidence presented in this paper, based on the structure of personal income tax rates, suggests that, on average, for developed countries e is close to 1.4. This particular approach to the estimation of e has previously been under‐utilised by researchers.  相似文献   
39.
40.
ABSTRACT Over the past three decades strategic management has become a crucial aspect of business education and practice. At the core of strategic management – linking technique to worldview – is modelling (e.g. value chain, SWOT analysis) whereby the complex elements of strategic thinking are simplified. This accounts in large part for the apparent popularity of strategic management as complex interrelationships are pursued through relatively simple models. Yet has the field of strategic management realized the third order of simulacra? Is strategic management a model of simulation whereby reality has been replaced by hyperreality? A review of the extant literature on strategy explores the study and practice of strategy as a discourse, engulfed by its own truth effects. An examination of the concepts of reflexivity demonstrates the value of a postmodern radical reflexive account through the application of Baudrillard's (1983 , 1988 , 1991 , 1994 ) simulation and simulacra. It is through the development of a radical reflexive discourse of strategy as simulacra, this paper critically examines the study and practice of strategy and the lessons we can take from this perspective.  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