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   4409篇
  免费   244篇
财政金融   969篇
工业经济   333篇
计划管理   649篇
经济学   884篇
综合类   35篇
运输经济   90篇
旅游经济   291篇
贸易经济   944篇
农业经济   118篇
经济概况   333篇
邮电经济   7篇
  2023年   44篇
  2022年   26篇
  2021年   53篇
  2020年   100篇
  2019年   175篇
  2018年   200篇
  2017年   217篇
  2016年   180篇
  2015年   126篇
  2014年   195篇
  2013年   743篇
  2012年   222篇
  2011年   221篇
  2010年   220篇
  2009年   195篇
  2008年   170篇
  2007年   130篇
  2006年   93篇
  2005年   110篇
  2004年   98篇
  2003年   111篇
  2002年   120篇
  2001年   84篇
  2000年   62篇
  1999年   67篇
  1998年   51篇
  1997年   35篇
  1996年   45篇
  1995年   45篇
  1994年   42篇
  1993年   42篇
  1992年   38篇
  1991年   40篇
  1990年   18篇
  1989年   20篇
  1988年   22篇
  1987年   20篇
  1986年   22篇
  1985年   24篇
  1984年   15篇
  1983年   26篇
  1982年   23篇
  1981年   22篇
  1980年   20篇
  1979年   23篇
  1978年   12篇
  1977年   19篇
  1976年   7篇
  1974年   7篇
  1973年   12篇
排序方式: 共有4653条查询结果,搜索用时 15 毫秒
51.
E-commerce not only has tremendous potential for growth but also poses unique challenges for both incumbents and new entrants. By examining drivers of firm performance in e-commerce from a capabilities perspective, the authors conceptualize three firm capabilities that are critical for superior firm performance in e-commerce: information technology capability, strategic flexibility, and trust-building capability. The extent and nature of market orientation is conceptualized as a platform for leveraging e-commerce capabilities. The authors test the effects of e-commerce capabilities on performance (e.g., relative profits, sales, return on investment) using data from 122 e-brokerage service providers. The results indicate that information technology capability and strategic flexibility affect performance given the right market orientation. Amit Saini (asaini2@unl.edu) is an assistant professor of marketing at University of Nebraska-Lincoln. He conducts research in the area of marketing strategy, technology-marketing interface, e-commerce strategy, and customer relationship management. He has presented papers at major conferences, and his research appears in theJournal of the Academy of Marketing Science and American Marketing Association—Marketing Educator’s Conference Proceedings. His industry experience includes sales management and quantitative market research. Jean L. Johnson (Johnsonjl@wsu.edu) is a professor of marketing at Washington State University. Her research includes partnering capabilities development in, and management of, interfirm relationships and management of international strategic alliances. Her research appears in journals such as theJournal of Marketing, the Journal of International Business Studies, theJournal of the Academy of Marketing Science, and theInternational Journal of Research in Marketing. She serves on the editorial boards of theJournal of Marketing, theJournal of the Academy of Marketing Science, the Journal of Retailing, theJournal of Business and Industrial Marketing, and reviews for others. She spent several years in the advertising industry and has lived, taught, and conducted research in France and Japan. She has been selected to cochair the 2006 winter American Marketing Association (AMA) conference.  相似文献   
52.
    
This dissertation aims at elucidating the history of Vernon Smith’s experimental economics by focusing its attention upon the three themes of rationality, minds and machines that assumed significance at different (albeit overlapping) stages of the development of Smith’s experimental economics with the help of his published and unpublished papers.Chapter 1 is devoted to the scrutiny of the form of rationality incorporated into the portions of Smith’s laboratory experiments whose results have usually been taken as corroborations of his “Hayek Hypothesis.” By bringing into the foreground Smith’s definite position on demand theory and its concrete instantiations on many different occasions, we make the case that Smith has consistently imposed by means of the induced value theory certain narrowly defined preference structures that have definite implications for the form of rationality instantiated in the laboratory.The main narrative in Chapter 2 concerns Smith’s intellectual interchanges with behavioral scientists in the early 1960s, more specifically, his reactions to behavioral scientists’ attempts at cognitive modeling. We present several reasons for interpreting Smith’s initiation of the attempt at the maximization-based induced value theory as an endeavor to discipline subjects’ minds. We also provide in Chapter 2 a portrayal of Smith’s missed opportunities to get involved in the large-scale laboratory experimentation projects pursued in the 1950s in close connection with several branches of psychology.Chapter 3 consists of two parts. In Part 1, we describe the origin of mechanism design economics, and offer a detailed explanation of the analytical kinship between Smith’s “microeconomic system theory” and the standard conceptual framework utilized in mechanism design economics. Part 2 is devoted to describing the roles played by the computer in both Smith’s empirical research agenda and the theoretical, mechanism design research pursued by Stanley Reiter (one of Smith’s intellectual companions since the 1950s). Our historical narrative in Chapter 3 is intended to clarify that computer experience and computational theory drove the development of Reiter’ version of mechanism design economics, and that they also (partially) shaped some crucial events in the history of Smith’s version of experimental economics.JEL Classification: B21, B31, C90, C92, D02Prof. Philip E. Mirowski: Advisor  相似文献   
53.
Passage of an Internal Revenue Service (IRS) overhaul bill in 1998 reflects the depth of American taxpayer frustration with the agency. We bring a constitutional, or rules of the game, perspective to tax enforcement. We examine political costs and benefits and agency discretion as reasons why tax enforcement by the government might deviate from the preferences of a representative citizen. We also examine prospects for reform. Lasting reform must alter the rules for deciding tax enforcement policy or the political pressures which yield excessive enforcement today will reemerge in the future.  相似文献   
54.
In a 1994 paper, extending the well-known incremental surplus subsidy scheme of Sappington and Sibley, Schwermer presented a non-Bayesian incentive scheme for regulating a Cournot oligopoly industry. This note designs an oligopolistic incentive scheme for a hierarchical Stackelberg model in which firms choose outputs sequentially.  相似文献   
55.
The paper attempts to identify the telecom-sector performance indicators, relevant economic variables, and institutional characteristics of a country that effect the process of privatization of state-owned telecom enterprises. Using standard duration analysis of a panel data, we demonstrate that the privatization incentives are not only shaped by the mobility of financial capital in a country but are also influenced by the degree of competitiveness of private sector participation in policy-making process. The empirical results also reveal the significant impact of productive efficiency in telecom service provision on its course to privatization. We thank an anonymous referee for helpful comments and suggestions. We are solely responsible for all mistakes.  相似文献   
56.
57.
Taxation of Mobile Factors as Insurance under Uncertainty   总被引:1,自引:0,他引:1  
This paper considers the effects of the taxation of mobile factors, i.e., capital, under uncertainty. The wages earned by residents of a jurisdiction are uncertain due to random shocks. Since the uncertain wages in a jurisdiction depend on the amount of mobile capital employed in the jurisdiction, and since taxation alters the quantity of capital employed, taxation affects the riskiness of uncertain wages. In particular, the taxation of capital moderates the fluctuation of uncertain wages, thereby providing insurance. For this reason, jurisdictions use distortionary capital taxation even if lump‐sum taxation is available. In addition, this insurance effect counteracts the tendency toward too low tax rates on capital arising from tax competition, and possibly improves the efficiency of tax competition.  相似文献   
58.
Entry deterrence and innovation in durable-goods monopoly   总被引:1,自引:0,他引:1  
This paper investigates the efficiency of innovation investments in a durable-goods monopoly when a potential entrant threatens to innovate as well. We show that the durability of the good endows the monopolist with the power to discourage rival innovation since current sales alter the demand for a new generation of the good. The equilibrium is therefore determined not only by the incentive for intertemporal price discrimination in durable-goods monopoly, but also by the incumbent's concern for maintaining the technological leadership. We demonstrate that entry deterrence followed by no innovation always implies underinvestment in innovation.  相似文献   
59.
Background: Validation of overall survival (OS) extrapolations of immune-checkpoint inhibitors (ICIs) during the National Institute for Health and Care Excellence (NICE) Single Technology Assessment (STA) process is limited due to data still maturing at the time of submission. Inaccurate extrapolation may lead to inappropriate decision-making. The availability of more mature trial data facilitates a retrospective analysis of the plausibility and validity of initial extrapolations. This study compares these extrapolations to subsequently available longer-term data.

Methods: A systematic search of completed NICE appraisals of ICIs from March 2000 to December 2017 was performed. A targeted search was also undertaken to procure published OS data from the pivotal clinical trials for each identified STA made available post-submission to NICE. Initial Kaplan-Meier curves and associated extrapolations from NICE documentation were extracted to compare the accuracy of OS projections versus the most mature data.

Results: The review identified 11 STAs, of which 10 provided OS data upon submission to NICE. The extrapolations undertaken considered parametric or piecewise survival models. Additional data cut-offs provided a mean of 18 months of OS beyond the end of the original data. Initial extrapolations typically under-estimated OS from the most mature data cut-off by 0.4–2.7%, depending on the choice of assessment method and use of the manufacturer- or ERG-preferred extrapolation.

Conclusion: Long-term extrapolation of OS is required for NICE STAs based on initial immature OS data. The results of this study demonstrate that the initial OS extrapolations employed by manufacturers and ERGs generally predicted OS reasonably well when compared to more mature data (when available), although on average they appeared to underestimate OS. This review and validation shows that, while the choice of OS extrapolation is uncertain, the methods adopted are generally aligned with later-published follow-up data and appear appropriate for informing HTA decisions.  相似文献   

60.
An increasing number of large and multinational organizations are moving to shared services models in delivering the human resource function. It is commonly believed that the adoption of an HR shared services model can transform the role of HR by enabling the HR function to be more strategic at the corporate level and more cost‐effective at the operational level. However, few academic studies have been carried out to investigate challenges to implementing an HR services center successfully and the impact of adopting an HR shared services model on different groups of employees. Through a case study of a multinational corporation, this article reveals that there remains a significant gap between literature espousing the efficacy and utility of HR shared services and the extent to which the adoption of such a model is successful. The financial and emotional cost of moving to a shared services model can outweigh the tangible cost savings predicted by firms. The idea of separating the HR function into strategic, operational, and administrative components may prove to be too simplistic, although it underpins the initiative of HR shared services. © 2006 Wiley Periodicals, Inc.  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