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   8679篇
  免费   141篇
财政金融   1829篇
工业经济   634篇
计划管理   1370篇
经济学   1842篇
综合类   113篇
运输经济   53篇
旅游经济   164篇
贸易经济   1338篇
农业经济   307篇
经济概况   1164篇
邮电经济   6篇
  2020年   76篇
  2019年   121篇
  2018年   148篇
  2017年   160篇
  2016年   145篇
  2015年   107篇
  2014年   148篇
  2013年   972篇
  2012年   223篇
  2011年   248篇
  2010年   220篇
  2009年   234篇
  2008年   225篇
  2007年   175篇
  2006年   189篇
  2005年   167篇
  2004年   173篇
  2003年   167篇
  2002年   177篇
  2001年   162篇
  2000年   160篇
  1999年   154篇
  1998年   166篇
  1997年   160篇
  1996年   148篇
  1995年   119篇
  1994年   125篇
  1993年   139篇
  1992年   158篇
  1991年   159篇
  1990年   113篇
  1989年   114篇
  1988年   97篇
  1987年   112篇
  1986年   122篇
  1985年   158篇
  1984年   136篇
  1983年   164篇
  1982年   135篇
  1981年   124篇
  1980年   141篇
  1979年   125篇
  1978年   95篇
  1977年   109篇
  1976年   103篇
  1975年   100篇
  1974年   91篇
  1973年   73篇
  1972年   62篇
  1971年   61篇
排序方式: 共有8820条查询结果,搜索用时 15 毫秒
181.
We use data from Germany, The Netherlands, Portugal and Spain to test for the effect of earnings variation on individual earnings. We replicate estimates for the USA and find that the variance of earnings in an occupation affects individual wages positively while the skewness of earnings has a negative effect. Both results are in conformity with wage compensation for risk averse workers. First version received: March 2001/Final version received: July 2002 We are grateful to two anonymous referees for valuable comments.  相似文献   
182.
183.
ABSTRACT . In The Calculus of Consent, Buchanan and Tullock argue for institutional safeguards to ensure maximal benefit for all members of a community against the potential tyranny of the majority. I extend this idea by introducing prudential concerns and argue that they ought to be factored into the decision making that constructs such safeguards. Specifically, I see the safeguarding of prudential concerns for all members of society as a matter that should be secured from the random fate of the political process by constitutional provisions.  相似文献   
184.
185.
In today's tough economic environment, governments at all levels face significant budget shortfalls and public rail transit systems must compete with other public services for government subsidies. It is critical that public rail transit systems be concerned with their operational performance and efficient use of resources. In this paper, we develop a methodology that measures a rail transit system's performance relative to that of other rail transit systems, compares its performance to an appropriate efficient benchmark system, and identifies the sources of its inefficiency. We analyze the relationship between public subsidies and operational performance of public rail systems and show an inverse relationship between subsidization and efficiency.  相似文献   
186.
Berlin is witnessing a massive tourism boom, and parts of it can be described as ‘new urban tourism’, which shows a preference for off the beaten track areas and ‘authentic’ experiences of the city. This form of tourism seems especially salient in Kreuzberg. It is here that an openly articulated critique of tourism attracted national attention in 2011 and has not ceased to do so since. This article aims to better understand the conflictive potential of (new urban) tourism in Kreuzberg. We argue that the readily expressed negative attitudes against tourists and the easily accepted link between tourism and gentrification have to be explained against the backdrop of certain housing‐market dynamics. Rising rents and a diminution in the number of flats available for rent are fuelling fears of gentrification in Kreuzberg, while the interest shown in new urban tourism and the comparatively low‐priced real‐estate market in Berlin result in a growing number of holiday flats. Although adding only slightly to the tightening of the housing market, holiday flats render complex processes of neighborhood change visible and further sustain an already prevalent tourism critique.  相似文献   
187.
Mixed methods research involves the combined use of quantitative and qualitative methods in the same research study, and it is becoming increasingly important in several scientific areas. The aim of this paper is to review and compare through a mixed methods multiple-case study the application of this methodology in three reputable behavioural science journals: the Journal of Organizational Behavior, Addictive Behaviors and Psicothema. A quantitative analysis was carried out to review all the papers published in these journals during the period 2003–2008 and classify them into two blocks: theoretical and empirical, with the latter being further subdivided into three subtypes (quantitative, qualitative and mixed). A qualitative analysis determined the main characteristics of the mixed methods studies identified, in order to describe in more detail the ways in which the two methods are combined based on their purpose, priority, implementation and research design. From the journals selected, a total of 1,958 articles were analysed, the majority of which corresponded to empirical studies, with only a small number referring to research that used mixed methods. Nonetheless, mixed methods research does appear in all the behavioural science journals studied within the period selected, showing a range of designs, where the sequential equal weight mixed methods research design seems to stand out.  相似文献   
188.
There are very few studies that quantify the interactions and tradeoffs between statistical and cognitive efficiency in designing stated-choice studies. While a conceptual framework for evaluating cognitive strategies would be desirable, Hensher adopts a strictly empirical approach in this experiment. The success of the study must be evaluated in light of his aggregating attributes rather than controlling the number of attributes, asymmetry in the narrow-range and wide-range attributes, and lack of orthogonality between the number of attributes and number of alternatives. Nevertheless, Hensher challenges uncritical acceptance of any given set of design features and correctly insists that we confirm our experience with rigorous, quantitative experiments.  相似文献   
189.
This paper develops the notion of parallel-neutral technical change for inputs and outputs. It is shown that parallel-neutral technical change generalizes existing radial notions of neutral technical change. A taxonomy of the structural consequences of parallel-neutral technical change is developed.  相似文献   
190.
Cities are key drivers of global climate change, with the majority of greenhouse gas (GHG) emissions being tied to urban life. Local actions to mitigate and adapt to climate change are essential for stabilization of the global climate and can also help to address other urban ecological problems such as pollution, decreasing biodiversity, etc. Companies are important urban actors in the development of low‐carbon cities because they provide a multitude of goods and services to city populations and directly influence urban carbon dioxide (CO2) emissions. This is a new area of research. While studies on corporate sustainability are numerous, there is little, if any, existing research that examines the role of companies in climate change adaptation and mitigation within specific urban areas. Urban ecologists also have not examined how corporate activity affects urban systems. Taking a multi‐disciplinary systems approach, we present a conceptual model of the role of companies in managing urban interactions with the climate system. We also present empirical findings illustrating how one company ‘partners’ with the city of Rotterdam to test electric vehicles as a pilot project for urban climate adaptation and mitigation. Copyright © 2010 John Wiley & Sons, Ltd and ERP Environment.  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