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   1883篇
  免费   56篇
财政金融   301篇
工业经济   159篇
计划管理   392篇
经济学   417篇
综合类   16篇
运输经济   17篇
旅游经济   24篇
贸易经济   365篇
农业经济   50篇
经济概况   195篇
邮电经济   3篇
  2023年   11篇
  2022年   16篇
  2021年   22篇
  2020年   26篇
  2019年   46篇
  2018年   64篇
  2017年   53篇
  2016年   96篇
  2015年   56篇
  2014年   95篇
  2013年   269篇
  2012年   84篇
  2011年   91篇
  2010年   92篇
  2009年   84篇
  2008年   68篇
  2007年   71篇
  2006年   45篇
  2005年   40篇
  2004年   33篇
  2003年   45篇
  2002年   38篇
  2001年   26篇
  2000年   43篇
  1999年   44篇
  1998年   34篇
  1997年   26篇
  1996年   16篇
  1995年   20篇
  1994年   25篇
  1993年   23篇
  1992年   12篇
  1991年   14篇
  1990年   10篇
  1989年   12篇
  1988年   8篇
  1987年   10篇
  1986年   14篇
  1985年   16篇
  1984年   18篇
  1983年   14篇
  1982年   11篇
  1981年   13篇
  1980年   11篇
  1979年   8篇
  1978年   14篇
  1977年   6篇
  1976年   6篇
  1973年   4篇
  1972年   7篇
排序方式: 共有1939条查询结果,搜索用时 15 毫秒
1.
Many observers argue that informed and insider trading is widespread in the emerging financial markets of transition countries, yet rigorous treatment of this issue has been virtually non–existent. The current paper estimates the extent of informed trading on the Prague Stock Exchange (PSE) using intra–day transaction data. Our estimates confirm that the average share of informed trading is equal to 0.32, which is high relative to developed markets and varies considerably among stocks. Using the Easley et al. (1996) approach on the very best segment of the PSE we obtained a high average probability of informed trading. Since data used in this study cover the period after the major attempts to improve market regulations, our results indicate that the PSE needs further strengthening to recover credibility and to become a real source of corporate financing. JEL classification: G14, G15.  相似文献   
2.
Previous studies of the driving times of shopping center patrons have not examined the effect of limited access highways. This study analyzed the impact of interstate highways on the driving times of 204 shoppers at three medium-sized regional shopping centers. Those shoppers indicating usage of interstate highways to reach their shopping destinations were significantly more likely to incur travel times greater than fifteen and twenty minutes than those not using the available interstate roads. In predicting the drawing power of these shopping centers, factors besides mass were found to be useful. These include square footage of shopping goods, stores, and number of parking places.  相似文献   
3.
December 1, 1996 a new law was implemented in Portugal to gradually reduce the standard workweek from 44 to 40 h. We study how this mandatory reduction affected employment through job creation and job destruction. There was considerable regional, sectoral and firm-size variation in the share of workers who were affected by the working hours reduction. We exploit this variation to assess the impact of the workweek reduction. We find evidence that the working hours reduction had a positive effect on employment through a fall in job destruction.  相似文献   
4.
Schweizer Konsumenten setzen sich sehr kritisch mit Lebensmitteln auseinander und sch?tzen Produkte, die über einen erkennbaren und relevanten Mehrwert verfügen. Mit einer innovativen Produktpalette an hochwertigen Frischeprodukten ist es Emmi gelungen, im In- und Ausland zu einem führenden Anbieter von Mehrwertprodukten aufzusteigen. Urs Riedener erkl?rt diesen Mehrwert und wieso Authentizit?t eine unabdingbare Voraussetzung für Glaubwürdigkeit ist.  相似文献   
5.
This paper aims to shed light on the role of the ‘ideology’of political parties in shaping the evolution of the welfarestate in 18 developed democracies, by providing empirical findingson the determinants of social-programme entitlements and socialspending over the period 1981–99. The paper shows thatstructural change is a major determinant of the extent of socialprotection. Our results suggest that overall spending is drivenup by structural change. On the other hand, strong structuralchange has a negative influence on welfare entitlements measuredby the net rate of sickness insurance. Partisan influence playsan important role in the dynamics of the welfare state. Left-winggovernments strengthen the positive effect of shocks on aggregatesocial expenditure, while right-wing governments undertake evenstronger cutbacks in replacement rates as a reaction to structuralchange. Footnotes 1 E-mail addresses: bruno.amable{at}ens.fr; donatella.gatti{at}cepremap.cnrs.fr;jan.schumacher{at}wiwi.uni-regensburg.de  相似文献   
6.
7.
8.
9.
Wildlife tourism experiences have the potential to positively impact tourists’ awareness, appreciation and actions in relation to the specific wildlife they encounter and the environment in general. This paper investigates the extent of such impact across multiple sites, and uses Structural Equation Modelling to identify factors that best predict positive long-term learning and environmental behaviour change outcomes. Three sets of variables were measured – visitors’ entering attributes (including pre-visit environmental orientation and motivation for the visit), salient aspects of the experience, and short- and long-term learning and environmental behaviour change outcomes. Although attributes such as pre-visit commitment and motivation to learn were among the best predictors of the long-term impact of the experience, there was evidence that aspects of the experience were also important. In particular, reflective engagement which involved cognitive and affective processing of the experience was found to be associated with short- and long-term environmental learning outcomes. The implications for wildlife tourism managers are discussed.  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