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   5389篇
  免费   178篇
财政金融   1012篇
工业经济   476篇
计划管理   922篇
经济学   1156篇
综合类   62篇
运输经济   32篇
旅游经济   64篇
贸易经济   1173篇
农业经济   223篇
经济概况   398篇
邮电经济   49篇
  2023年   34篇
  2022年   26篇
  2021年   57篇
  2020年   89篇
  2019年   114篇
  2018年   137篇
  2017年   153篇
  2016年   188篇
  2015年   136篇
  2014年   159篇
  2013年   588篇
  2012年   230篇
  2011年   229篇
  2010年   198篇
  2009年   243篇
  2008年   188篇
  2007年   199篇
  2006年   161篇
  2005年   139篇
  2004年   140篇
  2003年   154篇
  2002年   123篇
  2001年   117篇
  2000年   100篇
  1999年   100篇
  1998年   104篇
  1997年   89篇
  1996年   90篇
  1995年   80篇
  1994年   79篇
  1993年   68篇
  1992年   78篇
  1991年   63篇
  1990年   64篇
  1989年   64篇
  1988年   52篇
  1987年   42篇
  1986年   54篇
  1985年   71篇
  1984年   66篇
  1983年   51篇
  1982年   74篇
  1981年   47篇
  1980年   44篇
  1979年   37篇
  1978年   36篇
  1977年   35篇
  1976年   32篇
  1975年   27篇
  1972年   19篇
排序方式: 共有5567条查询结果,搜索用时 15 毫秒
51.
52.
53.
Cross‐listings of equities internationally are becoming more common. Using data for Europe and North America, previous studies reject the order flow diversion hypothesis, which states that international cross‐listings reduce home‐country trading volume. We test this hypothesis using data for equities cross‐listed in Singapore and Malaysia. We find that trading volume in Malaysia fell 42.9% when Singapore markets were closed for holidays. Furthermore, we show that trading volume in Malaysia did not increase following the implementation of regulations that ended the trading of Malaysian equities in Singapore in 1998. Hence, we reject the order flow diversion hypothesis.  相似文献   
54.
55.
56.
Supported by SNF Grant No: DMS 8803556.  相似文献   
57.
This paper incorporates an ecosystem model into a model of a simple economy. The decisionmaking agents in the ecosystem are individual organisms aggregated to the species level. A species may provide utility directly to humans, or it may provide utility indirectly because it is used either as a raw material in goods fabrication or as sustenance for other species. We describe a comparative static equilibrium of the ecosystem where species' demands for other species are equal to the supplies of those other species, and energy is conserved. The ecosystem is then embedded in the economy so that the effects of human intervention can be traced through both the ecosystem and the economy. Human intervention creates ecosystem externalities such that ecosystem equilibria are shifted and the new equilibria affect the utility or the production processes of other humans. This framework allows us to describe in principle which ecosystem services can be efficiently usurped by humans, which waste flows can be efficiently allowed into ecosystems, and which ecosystem organisms and physical attributes can be efficiently maintained.  相似文献   
58.
The Chicago Board Options Exchange concurrently listed European‐style and American‐style options on the Standard and Poor's 500 Index from April 2, 1986 through June 20, 1986. This unique time period allows for a direct measurement of the early exercise premium in American‐style index options. In this study, using ask quotes, we find average early exercise premiums ranging from 5.04 to 5.90% for calls, and from 7.97 to 10.86% for puts. Additionally, we are able to depict a potentially useful functional form of the early exercise premium. As in previous studies, we find some instances of negative early exercise premiums. However, a trading simulation shows that traders must be able to trade within the bid–ask spread to profit from these apparent arbitrage opportunities. © 2003 Wiley Periodicals, Inc. Jrl Fut Mark 23:287–313, 2003  相似文献   
59.
The Internet has increased the level of importance of the end‐consumer market to transportation carriers. In two between subject experiments, carrier disclosure on retail merchant websites is examined as a strategic differentiation strategy. Predictions are offered concerning effects of carrier disclosure strategies on product delivery‐related expectations, consumer attitudes, and intentions to purchase a product online. Results from Study 1 reveal significant differences between disclosure and nondisclosure of the carrier for numerous product delivery‐related variables, as well as many differences between the six carriers examined in this first study. Study 2 extends these findings by showing that providing consumers with a choice of carrier leads to increased levels of satisfaction with the online experience and greater willingness to buy, relative to nondisclosure and disclosure strategies.  相似文献   
60.
This study attempts to infuse relationship marketing theory into the study of logistics outsourcing relationships. In particular, the study demonstrates that not all of the partnerships between customers and providers of third‐party logistics services are the same in terms of their level of development. The existence of distinct levels of partnership established previously in the logistics literature is partially supported and a relationship between level of partnership development and the customer perceptions of key relationship marketing elements and outcomes is established. While exploratory in nature, these findings suggest there are benefits for the increased costs of developing closer partnerships.  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