全文获取类型
收费全文 | 138852篇 |
免费 | 3235篇 |
国内免费 | 14篇 |
专业分类
财政金融 | 25910篇 |
工业经济 | 11625篇 |
计划管理 | 22171篇 |
经济学 | 29802篇 |
综合类 | 1565篇 |
运输经济 | 975篇 |
旅游经济 | 2509篇 |
贸易经济 | 23903篇 |
农业经济 | 6233篇 |
经济概况 | 17125篇 |
信息产业经济 | 7篇 |
邮电经济 | 276篇 |
出版年
2021年 | 862篇 |
2020年 | 1640篇 |
2019年 | 2394篇 |
2018年 | 2406篇 |
2017年 | 2603篇 |
2016年 | 2769篇 |
2015年 | 2121篇 |
2014年 | 3445篇 |
2013年 | 15411篇 |
2012年 | 4265篇 |
2011年 | 4236篇 |
2010年 | 3793篇 |
2009年 | 4361篇 |
2008年 | 4004篇 |
2007年 | 3355篇 |
2006年 | 3636篇 |
2005年 | 3636篇 |
2004年 | 3156篇 |
2003年 | 2949篇 |
2002年 | 2891篇 |
2001年 | 2672篇 |
2000年 | 2606篇 |
1999年 | 2478篇 |
1998年 | 2353篇 |
1997年 | 2381篇 |
1996年 | 2237篇 |
1995年 | 2033篇 |
1994年 | 2037篇 |
1993年 | 2018篇 |
1992年 | 2085篇 |
1991年 | 1988篇 |
1990年 | 1872篇 |
1989年 | 1710篇 |
1988年 | 1629篇 |
1987年 | 1635篇 |
1986年 | 1719篇 |
1985年 | 2518篇 |
1984年 | 2382篇 |
1983年 | 2188篇 |
1982年 | 2048篇 |
1981年 | 1979篇 |
1980年 | 1941篇 |
1979年 | 1876篇 |
1978年 | 1654篇 |
1977年 | 1630篇 |
1976年 | 1403篇 |
1975年 | 1295篇 |
1974年 | 1196篇 |
1973年 | 1196篇 |
1972年 | 902篇 |
排序方式: 共有10000条查询结果,搜索用时 0 毫秒
821.
In the 1980s a number of large corporations restructured their diversified businesses through divestitures. It is hypothesized that restructuring activity focused on firms at intermediate levels of diversification (e.g., related-linked) which have a mixture of related and unrelated business units. Results confirm this hypothesis which explains that such mixed corporate strategies create organizational and control inefficiencies in managing both related and unrelated types of business units. Restructured firms were also found to move towards two types of different internal capital markets (related and unrelated). Most restructuring firms moved toward lower levels of diversification (e.g., related-constrained), although some moved toward higher levels of diversification (e.g., unrelated business). Also, this study finds restructuring firms that changed their corporate strategy by reducing diversified scope increased their R&D intensity. Firms that restructured and increased their diversified scope decreased R&D intensity. This result suggested a partial substitution between diversification and R&D activity. 相似文献
822.
Leonard L. Berry 《Journal of the Academy of Marketing Science》1995,23(4):236-245
Relationship marketing is an old idea but a new focus now at the forefront of services marketing practice and academic research.
The impetus for its development has come from the maturing of services marketing with the emphasis on quality, increased recognition
of potential benefits for the firm and the customer, and technological advances. Accelerating interest and active research
are extending the concept to incorporate newer, more sophisticated viewpoints. Emerging perspectives explored here include
targeting profitable customers, using the strongest possible strategies for customer bonding, marketing to employees and other
stakeholders, and building trust as a marketing tool. Although relationship marketing is developing, more research is needed
before it reaches maturity. A baker’s dozen of researchable questions suggests some future directions.
holds the J. C. Penney Chair of Retailing Studies, is a professor of Marketing, and is director of the Center for Retailing
Studies at Texas A&M University. He is a former national president of the American Marketing Association. His research interests
are services marketing, service quality, and retailing strategy. He has published numerous journal articles and books, includingDelivering Quality Service: Balancing Customer Perceptions and Expectations (Free Press, 1990),Marketing Services: Competing Through Quality (Free Press, 1991), andOn Great Service: A Framework for Action (Free Press, 1995). 相似文献
823.
824.
The law of one price (LOOP) is an essential foundation of both the pure theory of trade and monetary theory. Strictly speaking, the law relates to prices of individual commodities. However, empirical tests of LOOP have often relied on aggregated data. In this paper, a model is derived and estimated using price data for 15 selected inputs in New Zealand agriculture. The results offer no support for the LOOP in the short run, and the results for the long run are mixed. It may be inappropriate, therefore, to assume that the LOOP holds generally in modelling exercises, particularly when models are used for policy purposes. 相似文献
825.
Thomas E. Armstrong 《Economic Theory》1992,2(1):27-41
Supported by SNF Grant No: DMS 8803556. 相似文献
826.
Gibrat's Law and Farm Growth in Canada 总被引:1,自引:0,他引:1
827.
Glen L. Gray 《International Journal of Intelligent Systems in Accounting, Finance & Management》1992,1(1):21-28
Hypertext discussions are occurring more frequently at expert systems conferences. Hypertext is not an expert system language or expert system shell, but instead it is simultaneously a method of storing and retrieving data. The growing interest in hypertext in the expert system domain is because the combination of hypertext capabilities and expert systems creates a compelling synergistic relationship (Oren, 1987). During a panel discussion at the Second International Symposium on Expert Systems in Business, Finance and Accounting, Bill Swartout compared traditional expert systems to hypertext by saying that the knowledge base (e.g. the production rules) of an expert system can be thought of as formal knowledge and hypertext can be thought of as informal knowledge. This article will demonstrate how this informal knowledge can add power to traditional expert systems by increasing the flexibility of the explanation facilities and thereby the appeal of the system to a broader range of users. The article also will discuss how expert systems can improve the functionality of hypertext systems by adding intelligence to traditional hypertext systems. This article is divided into three sections. The first describes basic hypertext concepts. The second section shows how hypertext can enhance expert systems and, conversely, how expert systems can enhance hypertext systems. The final section discusses some potential problems and concerns that must be considered when designing a hypertext system. 相似文献
828.
William J. Kross Wilbur G. Lewellen Byung T. Ro 《Managerial and Decision Economics》1994,15(3):187-200
A multivariate model of the process by which managers decide to release public forecasts of their firms' earnings is developed, based on factors that are hypothesized to affect the demand for and the willingness to supply such forecasts. We test the model on data from a comprehensive sample of earnings forecasts, and find support for our hypotheses about the likely joint influence of those factors. Larger firm size, greater leverage, higher and more stable earnings rates and less rapid growth rates are found to be associated with an increased propensity for management to provide earnings forecasts for their firms. 相似文献
829.
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
830.
Praveen R. Nayyar 《战略管理杂志》1992,13(3):219-235
Actual, not potential, relatedness determines the results of diversification strategies. An external examination of a firm's businesses, products, markets and technologies permits an assessment of potential relatedness among its various businesses. Potential relatedness is, however, often not realized. Also, relatedness may be externally invisible. Hence, actual relatedness may diverge from externally measured potential relatedness. This paper provides evidence suggesting that measures of corporate diversification strategy based on internal data differ significantly from those based on externally available data. 相似文献