全文获取类型
收费全文 | 30314篇 |
免费 | 711篇 |
专业分类
财政金融 | 5204篇 |
工业经济 | 2039篇 |
计划管理 | 5068篇 |
经济学 | 7084篇 |
综合类 | 539篇 |
运输经济 | 187篇 |
旅游经济 | 367篇 |
贸易经济 | 5384篇 |
农业经济 | 1290篇 |
经济概况 | 3758篇 |
信息产业经济 | 5篇 |
邮电经济 | 100篇 |
出版年
2023年 | 127篇 |
2021年 | 169篇 |
2020年 | 319篇 |
2019年 | 502篇 |
2018年 | 1164篇 |
2017年 | 1186篇 |
2016年 | 915篇 |
2015年 | 414篇 |
2014年 | 689篇 |
2013年 | 2764篇 |
2012年 | 1004篇 |
2011年 | 1455篇 |
2010年 | 1301篇 |
2009年 | 1336篇 |
2008年 | 1238篇 |
2007年 | 1269篇 |
2006年 | 709篇 |
2005年 | 671篇 |
2004年 | 658篇 |
2003年 | 706篇 |
2002年 | 544篇 |
2001年 | 554篇 |
2000年 | 525篇 |
1999年 | 456篇 |
1998年 | 530篇 |
1997年 | 447篇 |
1996年 | 478篇 |
1995年 | 397篇 |
1994年 | 412篇 |
1993年 | 393篇 |
1992年 | 409篇 |
1991年 | 425篇 |
1990年 | 393篇 |
1989年 | 278篇 |
1988年 | 289篇 |
1987年 | 300篇 |
1986年 | 283篇 |
1985年 | 418篇 |
1984年 | 401篇 |
1983年 | 361篇 |
1982年 | 320篇 |
1981年 | 325篇 |
1980年 | 321篇 |
1979年 | 317篇 |
1978年 | 267篇 |
1977年 | 229篇 |
1976年 | 221篇 |
1975年 | 191篇 |
1974年 | 171篇 |
1973年 | 165篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
141.
OPTIONS AND EFFICIENCY IN MULTIDATE SECURITY MARKETS 总被引:1,自引:0,他引:1
This paper extends the work of Ross (1976; Q. J. Econ. (90)1, 75–89) to multidate security markets. First, we show that if a primitive security separates states at the terminal date, then there exist multiperiod European options on that security generating dynamically complete markets. Second, we show that if a primitive security conditionally separates states at the terminal date, then there exist multiperiod European options on that security generating generically dynamically complete markets provided that certain conditions hold. Third, we show that there are economies for which the minimum number of multiperiod European options on a primitive security generating generically dynamically complete markets is relatively large. Finally, we show that in these economies, a relatively small number of multiperiod European options on possibly different portfolio strategies of primitive securities generates generically dynamically complete markets. 相似文献
142.
Strategic partnerships are commonplace in today's global economy. Effective use of partnerships are viewed increasingly as an important issue facing small, growth-oriented firms. A key debate is how small firms should manage supplier partnerships. Contrasting the debate about the extent to which small firms are inertial versus adaptive, the impact of growth on value chain partnerships with suppliers was investigated. Data collected from 91 pharmaceutical-related firms is used to test the proposition that firm growth is related positively to maintaining or to expanding relationships with suppliers, not to terminating partnerships. The paper further posits that this relationship between firm growth and the amount purchased from a supplier is moderated by the perceived effectiveness of the value-chain partnerships such that when effectiveness is higher, the relationship between sales growth and the amount purchased from a value-chain partner is stronger. The propositions, which are tested with regression analysis, are supported partially. 相似文献
143.
144.
Samuel V. Bruton 《Journal of Business Ethics》2004,49(2):179-187
The Golden Rule is endorsed in oneform or another by most cultures and majorreligions and is still espoused byphilosophers, business ethicists, and popularbusiness authors. Because it also resonateswith undergraduate business majors, it can bean effective teaching tool. This paperdescribes a way of teaching the Golden Rulethrough a series of business-oriented examplesintended to bring out its strengths andweaknesses. The method described alsointroduces students to some basic moralreasoning skills and acquaints them with a widerange of moral issues that arise in business. Kant's Formula of Humanity is discussed in thefinal section as a principle that overcomes atleast some of the Golden Rule's defects. 相似文献
145.
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
146.
147.
148.
149.
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
150.
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