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   4939篇
  免费   1243篇
财政金融   917篇
工业经济   435篇
计划管理   1190篇
经济学   1182篇
综合类   14篇
运输经济   106篇
旅游经济   61篇
贸易经济   1360篇
农业经济   330篇
经济概况   587篇
  2023年   16篇
  2022年   11篇
  2021年   94篇
  2020年   188篇
  2019年   516篇
  2018年   255篇
  2017年   395篇
  2016年   384篇
  2015年   402篇
  2014年   397篇
  2013年   638篇
  2012年   414篇
  2011年   399篇
  2010年   336篇
  2009年   249篇
  2008年   256篇
  2007年   205篇
  2006年   185篇
  2005年   142篇
  2004年   126篇
  2003年   111篇
  2002年   111篇
  2001年   100篇
  2000年   62篇
  1999年   24篇
  1998年   14篇
  1997年   10篇
  1996年   8篇
  1995年   15篇
  1994年   15篇
  1993年   5篇
  1992年   4篇
  1991年   5篇
  1990年   5篇
  1989年   6篇
  1988年   2篇
  1987年   9篇
  1986年   5篇
  1985年   9篇
  1984年   4篇
  1983年   8篇
  1982年   5篇
  1981年   6篇
  1980年   3篇
  1979年   9篇
  1978年   3篇
  1977年   6篇
  1976年   2篇
  1967年   1篇
  1965年   1篇
排序方式: 共有6182条查询结果,搜索用时 15 毫秒
51.
While the benefits of being market oriented are largely accepted, a group of scholars and managers remain skeptical. Marketing scholars have sought to counter the criticisms leveled against market orientation (MO) by arguing that it has both responsive and proactive dimensions. However, few studies have empirically examined the complexity of the effects of these dimensions on firm performance. Drawing on theories of resource‐based advantage and organizational search behavior, this article advances understanding by arguing that responsive and proactive market orientations have curvilinear effects on product development performance, that their interaction may be positively related to product development performance, and that their effects on new product program performance are moderated differentially by the organizational implementation conditions and marketing function power. Survey results of 175 U.S. firms indicate support for most of the hypotheses. Specifically, whereas responsive MO has a U‐shaped relationship with new product program performance, proactive MO has an inverted U‐shaped relationship with new product program performance. Contrary to the arguments presented here, the interaction of both orientations is negatively related to new product program performance. This study finds that both orientations are needed; however, new product program performance is enhanced when one is at higher level and the other is at lower level. Finally, responsive MO is only positively related to new product program performance under specific conditions such as when strategic consensus among managers is high. On the other hand, the positive effect of proactive MO on new product program performance is further strengthened when learning orientation and marketing power are high. Overall, this study suggests that the effects of responsive and proactive MO on new product program performance are more complex than previously theoretically argued and empirically examined.  相似文献   
52.
We propose two novel approaches for feature selection and ranking tasks based on simulated annealing (SA) and Walsh analysis, which use a support vector machine as an underlying classifier. These approaches are inspired by one of the key problems in the insurance sector: predicting the insolvency of a non‐life insurance company. This prediction is based on accounting ratios, which measure the health of the companies. The approaches proposed provide a set of ratios (the SA approach) and a ranking of the ratios (the Walsh analysis ranking) that would allow a decision about the financial state of each company studied. The proposed feature selection methods are applied to the prediction the insolvency of several Spanish non‐life insurance companies, yielding state‐of‐the‐art results in the tests performed. Copyright © 2005 John Wiley & Sons, Ltd.  相似文献   
53.
A feature transformation method based on domain knowledge for arti?cial neural networks (ANNs) is proposed. The method of feature transformation based on domain knowledge converts continuous values into discrete values in accordance with the knowledge of experts in speci?c application domains. This approach effectively ?lters data, trains the classi?er, and extracts the rules from the classi?er. In addition, it reduces the dimensionality of the feature space, which not only decreases the cost and time in the operation but also enhances the generalizability of the classi?er. The experimental results of the proposed approach will be compared and tested statistically with the results of the linear transformation method. The results show that the method of feature transformation based on domain knowledge outperforms the linear transformation in modelling of ANNs. Copyright © 2004 John Wiley & Sons, Ltd.  相似文献   
54.
The Cuban economy has experienced a significant increase in foreign direct investment over the past decade due to the end of the Soviet Union and the establishment of more liberal trade policies. Although the U.S. embargo of trade with Cuba still exists, there has been movement lately that suggests the end of the four‐decades‐old policy. The purpose of this article is to analyze the current Cuban business environment and to identify potential entrepreneurial opportunities in the service sector. Major trade partners are also reviewed and managerial implications discussed. © 2006 Wiley Periodicals, Inc.  相似文献   
55.
This study examines three trust-building processes and outcomes in sales manager-salesperson relationships. This study, based on a sample of more than 400 business-to-business salespeoples from a variety of industries, shows two trust-building processes (predictive and identification) to be significantly related to salesperson trust in the sales manager. Interpersonal trust was found to be most strongly related to shared values and respect. Trust was directly related to job satisfaction and relationalism, and indirectly related to organizational commitment and turnover intention. Thomas G. Brashear (brashear@mktg.umass.edu) (Ph.D., Georgia State University) is an assistant professor of marketing in the Isenberg School of Management at the University of Massachusetts-Amherst. James S. Boles (jboles@gsu.edu) (Ph.D., Louisiana State University) is an associate professor of marketing in the Robinson College of Business at Georgia State University. His research has appeared in a variety of journals, including theJournal of Marketing, theJournal of Business Research, theJournal of the Academy of Marketing Science, theJournal of Retailing, theJournal of Personal Selling and Sales Management, and theJournal of Applied Psychology. His areas of research interest include personal selling, sales management, key and strategic account management, and business relationships. Danny N. Bellenger (mktdnb@langate.gsu.edu) (Ph.D., University of Alabama) is currently chairman of the Marketing Department in the Robinson College of Business at Georgia State University. His research has appeared in a number of academic journals including theJournal of Marketing Research, theJournal of Marketing, theJournal of Advertising Research, theCalifornia Management Review, theJournal of Retailing, theJournal of Personal Selling and Sales Management, Industrial Marketing Management, and theJournal of Business Research. He has authored four monographs and four textbooks on marketing research, sales, and retailing. Charles M. Brooks (brooks@quinnipiac.edu) (Ph.D., Georgia State University) is an associate professor and chair of the Department of Marketing and Advertising at Quinnipiac University. His research has appeared in theJournal of Business Research, theJournal of Retailing, Marketing Theory, and theJournal of Marketing Theory and Practice.  相似文献   
56.
Abstract

This paper uses Social Exchange Theory as a lens for comparing the impact of management support upon police perceptions of discretionary power and employee engagement, across three countries. A survey-based, self-report process collected data from 193 police officers in Australia, 588 from the USA, and 249 from Malta. Structural equation modelling was used to analyse the data. The findings suggest a significantly different management support context across the three countries, as well as significantly different perceptions of discretionary power. Across the three countries, police perceived relatively poor satisfaction with organizational management support and only some engagement levels. However, USA police perceived significantly more discretionary power than the other country samples. These findings provide greater clarity about the link between management support, discretionary power and engagement for the police officers. Since employee engagement likely affects policing outcomes, the findings suggest that poor management support of police officers could negatively affect the provided service. Potential strategies to enhance police engagement include (a) training police managers about how to manage so as to promote greater engagement, and (b) modifying police managers’ performance indicators in line with achieving better police engagement.  相似文献   
57.
We propose an optimal filter to transform the Conference Board Composite Leading Index (CLI) into recession probabilities in the US economy. We also analyse the CLI's accuracy at anticipating US output growth. We compare the predictive performance of linear, VAR extensions of smooth transition regression and switching regimes, probit, non‐parametric models and conclude that a combination of the switching regimes and non‐parametric forecasts is the best strategy at predicting both the NBER business cycle schedule and GDP growth. This confirms the usefulness of CLI, even in a real‐time analysis. Copyright © 2002 John Wiley & Sons, Ltd.  相似文献   
58.
一、引言 保理公司是专门负责应收账款管理的金融机构。如果保理商选择购买一个企业的应收账款,它将按应收账款发票面值的一定折扣预先支付给企业一定的资金。@近来有些文献试图检验企业保理决策背后的动机:Mian&Mian提供了一个综合的实证检验,  相似文献   
59.
The last few years have witnessed important advances in our understanding of time preference and social discounting. In particular, several rationales for the use of time-varying social discount rates have emerged. These rationales range from the ad hoc to the formal, with some founded solely in economic theory while others reflect principles of intergenerational equity. While these advances are to be applauded, the practitioner is left with a confusing array of rationales and the sense that almost any discount rate can be justified. This paper draws together these different strands and provides a critical review of past and present contributions to this literature. In addition to this we highlight some of the problems with employing DDRs in the decision-making process, the most pressing of which may be time inconsistency. We clarify their practical implications, and potential pitfalls, of the more credible rationales and argue that some approaches popular in environmental economics literature are ill-conceived. Finally, we illustrate the impact of different approaches by examining global warming and nuclear power investment. This includes an application and extension of Newell and Pizer [‘Discounting the benefits of climate change mitigation : how much do uncertain rates increase valuations?’ Journal of Environmental Economics and Management 46 (2003) 52] to UK interest rate data.  相似文献   
60.
This article examines the redistributive impact of Commonwealth outlays and taxes (including outlays directed through and to the States)and two possible alternative systems of distributing Commonwealth funding amongst the States.  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