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   23477篇
  免费   622篇
财政金融   4281篇
工业经济   1705篇
计划管理   3985篇
经济学   5579篇
综合类   244篇
运输经济   176篇
旅游经济   343篇
贸易经济   3809篇
农业经济   1166篇
经济概况   2734篇
信息产业经济   3篇
邮电经济   74篇
  2023年   113篇
  2021年   149篇
  2020年   287篇
  2019年   458篇
  2018年   499篇
  2017年   527篇
  2016年   518篇
  2015年   357篇
  2014年   567篇
  2013年   2417篇
  2012年   800篇
  2011年   844篇
  2010年   731篇
  2009年   823篇
  2008年   745篇
  2007年   655篇
  2006年   639篇
  2005年   553篇
  2004年   475篇
  2003年   476篇
  2002年   423篇
  2001年   502篇
  2000年   461篇
  1999年   420篇
  1998年   484篇
  1997年   446篇
  1996年   446篇
  1995年   372篇
  1994年   387篇
  1993年   389篇
  1992年   375篇
  1991年   399篇
  1990年   372篇
  1989年   275篇
  1988年   285篇
  1987年   288篇
  1986年   262篇
  1985年   374篇
  1984年   380篇
  1983年   349篇
  1982年   307篇
  1981年   316篇
  1980年   301篇
  1979年   300篇
  1978年   238篇
  1977年   193篇
  1976年   188篇
  1975年   179篇
  1974年   156篇
  1973年   151篇
排序方式: 共有10000条查询结果,搜索用时 513 毫秒
121.
The purpose of this study was to assess the basis behavior of the Live Cattle Futures contract at the Chicago Mercantile Exchange (CME) before and after the 1995 contract changes. Additionally, an alternative method of basis calculation utilizing weighted mean futures prices versus settlement futures prices was compared to determine which method provides a better representation of the basis level. Within a regression model with heteroskedascity error framework, we found that the level of nearby basis in the period after June 1995 has shifted lower and the average monthly open interest of net commercial long positions has substantially increased after the contract modifications. These empirical results are consistent with the notion that more long activity entered the market in response to the contract modifications. Additionally, an alternative (new) measure of basis calculation (cash price minus weighted mean futures price) produced similar results to two other commonly used measures. In conclusion, the 1995 contract changes have neither increased nor decreased the volatility of live cattle basis. © 2004 Wiley Periodicals, Inc. Jrl Fut Mark 24:557–590, 2004  相似文献   
122.
123.
124.
Consumer spending over the life span of today's 18‐ to 25‐year‐old emerging adults will reach into the $10 trillion range. Emerging adults are a powerful force in shaping demand for consumer products. The problem recognition styles associated with emerging adults can help marketers understand this group of consumers and provide insight into what kinds of products, services, and messages will appeal to them as lifelong consumers. The purpose of this study was to examine differences between men and women and among fashion consumer groups in fashion problem recognition style. Participants were a convenience sample of emerging adult consumers from one Midwestern university in the US, 136 men and 158 women who completed the Measure of Fashion Innovativeness and Opinion Leadership, Fashion Problem Recognition Style Scale, and provided demographic information. Both fashion followers and men reflected a need‐based approach to problem recognition. Both fashion change agents and women reflected a want‐based approach to problem recognition. Male fashion followers differed from all other groups in indicating a need‐based approach to problem recognition. This study built on previous work by examining differences in problem recognition style owing to fashion consumer group and gender. The basic premise behind problem recognition style was validated; that is, actual state (need‐based) vs. ideal state (want‐based) approaches to fashion problem recognition did relate to fashion consumer group membership and gender.  相似文献   
125.
Two questions formed the structure for examining the formal communication among researchers using the Journal of Consumer Studies and Home Economics (JCSHE) The first question pertained to the interrelationship between the literature published and cited in JCSHE. The second asked what impact the literature published in JCSHE had on authors publishing in other journals. By performing Bradford analysis using the 1,160 journal references cited by authors of 210 articles in the first seven volumes of JCSHE, 26 core journals were identified. JCSHE was ranked second because it was cited 54 times in 37 articles by 29 authors. Through citation analysis 17 citing articles published in 12 journals other than JCSHE were found. Seven of these 17 citing articles were published in other home economics journals.  相似文献   
126.
This paper analyzes countertrade as a special case of a customs union in which the countertrade agreement gives rise (as in customs union theory) to both trade-creating and trade-diverting effects. The net effects on welfare are ambiguous. A detailed case study from Egypt and brief examples from other countries illustrate the relevance of this interpretation .  相似文献   
127.
128.
Local economic development (LED) planning is of major policy importance in post-apartheid South Africa. Although issues surrounding LED have attracted considerable policy attention, one neglected theme has been the role of tourism as a lead sector for LED. The aim of this article is to examine the planning and workings of one tourism-led LED initiative in South Africa. The case study is that of the Highlands Meander in Mpumalanga province, where five towns are collaborating in their LED initiatives in order to promote the area's tourism products. A key finding is that this growing tourism initiative is currently not benefiting local black communities. Recommendations are offered for developing a pro-poor tourism initiative.  相似文献   
129.
130.
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