全文获取类型
收费全文 | 47635篇 |
免费 | 879篇 |
国内免费 | 1篇 |
专业分类
财政金融 | 8644篇 |
工业经济 | 3366篇 |
计划管理 | 7500篇 |
经济学 | 10909篇 |
综合类 | 777篇 |
运输经济 | 329篇 |
旅游经济 | 733篇 |
贸易经济 | 7932篇 |
农业经济 | 2182篇 |
经济概况 | 6028篇 |
信息产业经济 | 5篇 |
邮电经济 | 110篇 |
出版年
2021年 | 265篇 |
2020年 | 496篇 |
2019年 | 795篇 |
2018年 | 1378篇 |
2017年 | 1419篇 |
2016年 | 1207篇 |
2015年 | 602篇 |
2014年 | 1052篇 |
2013年 | 4554篇 |
2012年 | 1495篇 |
2011年 | 1939篇 |
2010年 | 1690篇 |
2009年 | 1795篇 |
2008年 | 1714篇 |
2007年 | 1647篇 |
2006年 | 1114篇 |
2005年 | 1037篇 |
2004年 | 1024篇 |
2003年 | 1022篇 |
2002年 | 922篇 |
2001年 | 900篇 |
2000年 | 872篇 |
1999年 | 809篇 |
1998年 | 831篇 |
1997年 | 784篇 |
1996年 | 787篇 |
1995年 | 686篇 |
1994年 | 691篇 |
1993年 | 699篇 |
1992年 | 717篇 |
1991年 | 726篇 |
1990年 | 620篇 |
1989年 | 526篇 |
1988年 | 504篇 |
1987年 | 529篇 |
1986年 | 524篇 |
1985年 | 772篇 |
1984年 | 739篇 |
1983年 | 688篇 |
1982年 | 629篇 |
1981年 | 589篇 |
1980年 | 627篇 |
1979年 | 567篇 |
1978年 | 469篇 |
1977年 | 408篇 |
1976年 | 358篇 |
1975年 | 378篇 |
1974年 | 318篇 |
1973年 | 308篇 |
1972年 | 214篇 |
排序方式: 共有10000条查询结果,搜索用时 8 毫秒
61.
Timothy M. Devinney 《Journal of Product Innovation Management》1992,9(3):222-231
The historic focus of new products research has been on the ability of new products to enhance the profitability and competitive position of the innovating firm. In this article, Timothy Devinney shows that there exists an overlooked and potentially significant side effect associated with new product innovations: financial risk changes. He reports that significant financial risk changes occurred in approximately 50% of the new product announcements he examined. The magnitude of these financial risk changes translates into overestimates or underestimates of the firm's cost of capital by 17% to 18% and is strongly and positively related to the size of the firm and the firm's new product innovation activity. 相似文献
62.
This study investigates ethical decision-making by considering the differences in ethical judgments between undergraduate business and MBA students on selected ethical issues facing employees and managers of today's businesses. The study further investigates differences in ethical judgments between undergraduates and MBAs in terms of a perceived position as an employee or as a manager. The findings indicate that undergraduate students tend to be more ethical than MBA students and that both groups tend to be more ethical when they perceive themselves as managers rather than employees. The authors discuss the implications for both business practitioners and educators.Shohreh A. Kaynama is Associate Professor of Marketing in the School of Business and Economics at Towson State University in Baltimore, Maryland. She earned a Ph.D. in Marketing and the Decision Sciences. Dr. Kaynama has published extensively in numerous National and International proceedings. Her area of research is strategic marketing, consumer behavior, applications of computers and decision sciences in marketing and global marketing.
Louise W. Smith is Professor of Marketing in the School of Business and Economics at Towson State University in Baltimore, Maryland. Dr. Smith's main professional interest is consumer behavior. Dr. Smith's articles have appeared in the Journal of Public Policy & Marketing, Journal of Health Care Marketing, Journal of Marketing Education, Journal of Services Marketing, and Journal of Consumer Marketing among others.
Algin B. King is Professor of Marketing in the School of Business and Economics at Towson State University in Baltimore, Maryland. He has served on the Faculties of seven universities, publishing numerous articles in National Professional Meetings Proceedings and scholarly journals including Journal of Euro-Marketing, Atlantic Economic Journal. In addition he has served as a business consultant to numerous business firms. 相似文献
63.
64.
The purpose of this study was to find out if significant differences exist in patterns of expenditures between elderly and non-elderly consumers, taking poverty status into account. Cluster analysis was used to identify expenditure patterns. Four different expenditure patterns were found. Elderly middle-income and affluent households were more likely to belong to service-using cluster than non-elderly poor households. Nonelderly households were more likely to belong to shelter-dominated cluster than elderly households. Poor households were more likely to belong to homebound cluster, while non-poor households were more likely to belong to car-centred cluster. 相似文献
65.
The price movements of certain assets can be modeled by stochastic processes that combine continuous diffusion with discrete jumps. This paper compares values of options on assets with no jumps, jumps of fixed size, and jumps drawn from a lognormal distribution. It is shown that not only the magnitude but also the direction of the mispricing of the Black-Scholes model relative to jump models can vary with the distribution family of the jump component. This paper also discusses a methodology for the numerical valuation, via a backward induction algorithm, of American options on a jump-diffusion asset whose early exercise may be profitable. These cannot, in general, be accurately priced using analytic models. The procedure has the further advantage of being easily adaptable to nonanalytic, empirical distributions of period returns and to nonstationarity in the underlying diffusion process. 相似文献
66.
Christopher M. Dent 《Intereconomics》1997,32(1):7-13
Present economic linkages between the European Union and East Asia are relatively underdeveloped despite the fact that a number of EU member states have deep historical associations within the region. It is imperative that EU business engages itself more intensively in East Asia if Europe is not to become marginalised in an emergent “Pacific century”. *** DIRECT SUPPORT *** A02GP109 00002 相似文献
67.
Summary A sequential testing procedure called 2-SPRT for the meanμ of the negative binomial distribution with known exponentk is presented. For any fixedμ
0(μ
1<μ
0<μ
2), the 2-SPRT provides an asymptotic solution to the modified Kiefer-Weiss problem. Determination ofμ
0 such that the test provides an approximate solution to the Kiefer-Weiss problem is described. The behavior of the 2-SPRT
and the Sequential Probability Ratio Test is investigated using Monte Carlo methods. The error probabilities and the average
sample numbers are compared.
All the computations were carried out on the Alabama Supercomputer. 相似文献
68.
Dr. M. Riedel 《Metrika》1992,39(1):209-217
Summary In this note we characterize all linear transformations of random vectors which are invariant for a given parametric covariance
family. Two one-dimensional covariance families are discussed in detail. 相似文献
69.
This study investigates the relative roles of bond ratings and financial information in the setting of bond yields. Structural equation modeling techniques are used to learn whether ratings determine yields or whether both ratings and yields are determined by a concurrent set of economic and financial factors. Tests of alternative structural model configurations provide evidence regarding the associations between bond ratings, financial information, and bond yields. Both ratings and financial information are found to play an important role in determining bond yields. In addition, yields are consistent with the higher rating in cases of split ratings. 相似文献
70.