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   17561篇
  免费   488篇
  国内免费   13篇
财政金融   2829篇
工业经济   1212篇
计划管理   2931篇
经济学   3582篇
综合类   315篇
运输经济   124篇
旅游经济   324篇
贸易经济   3135篇
农业经济   927篇
经济概况   2657篇
邮电经济   26篇
  2021年   119篇
  2020年   208篇
  2019年   313篇
  2018年   394篇
  2017年   438篇
  2016年   389篇
  2015年   286篇
  2014年   468篇
  2013年   1638篇
  2012年   518篇
  2011年   551篇
  2010年   501篇
  2009年   537篇
  2008年   582篇
  2007年   532篇
  2006年   478篇
  2005年   441篇
  2004年   396篇
  2003年   394篇
  2002年   358篇
  2001年   326篇
  2000年   337篇
  1999年   289篇
  1998年   303篇
  1997年   303篇
  1996年   296篇
  1995年   269篇
  1994年   253篇
  1993年   290篇
  1992年   279篇
  1991年   258篇
  1990年   248篇
  1989年   221篇
  1988年   179篇
  1987年   206篇
  1986年   203篇
  1985年   301篇
  1984年   305篇
  1983年   290篇
  1982年   267篇
  1981年   255篇
  1980年   210篇
  1979年   218篇
  1978年   163篇
  1977年   171篇
  1976年   149篇
  1975年   118篇
  1974年   109篇
  1973年   102篇
  1972年   77篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
961.
Regulation, Vertical Integration and Sabotage   总被引:9,自引:0,他引:9  
We consider the incentive of a dominant firm that supplies a necessary input to a Bertrand-competitive differentiated products downstream industry to: (1) vertically integrate forward, and (2) raise its downstream rivals' costs through non-price activities which we characterize generally as 'sabotage'. We examine these incentives both in the absence and presence of a regulatory constraint on the upstream price. We find that, while an incentive for vertical integration is present regardless of the existence of the regulatory constraint, the incentive for sabotage emerges only in the presence of binding input price regulation. Welfare effects are also explored.  相似文献   
962.
A primary goal of the 1996 Telecommunications Act isto encourage competition in long-distance telephonemarkets. Four years after passage of thislegislation, Bell Operating Companies (``BOCs') havebeen granted permission to offer long-distanceservices in only one state. The regulatory barrier toentry is justified on grounds that the BOCs have theability to discriminate against incumbentlong-distance carriers in the provision of essentialaccess services. We take this premise as given andquantify the critical level of discrimination requiredto offset the positive consumers' surplus gainsassociated with the enhanced competition resultingfrom BOC entry into long-distance markets.  相似文献   
963.
Throughout the twentieth century governments have been spendingever larger proportions of national income. Three issues arisein discussions about the growth of such spending as it pertainsto developing countries: How does it compare with expenditurein industrial nations? What explains the growth in spendingby developing country governments? And what are the effectson economic growth? Government expenditure as a share of GDPin low- and middle-income countries, on average, is lower thancomparable shares in industrial market economies and, with fewexceptions, is growing. Many factors, including ideology, demographics,a positive income elasticity for public goods, the rising costof public goods relative to private goods, and perhaps developmenttheory and practice, explain this growth. As for the relationshipbetween government expenditure and economic growth, the empiricalevidence does not reveal any strong correlation. The size ofgovernment may engender strong ideological debate, but the positionthat the aggregate level of government expenditure is a significantdeterminant of growth rates receives little support.   相似文献   
964.
In this article Mr. A. L. Waddams, Chairman of the EVAF European Chemical Marketing Research Association, presents his thoughts on the different ways in which market research can be utilized to advance a complex project. Two main interactions, between market research and the project, are considered: the first where the findings of the market researchers are “fed-in” and the project then proceeds without further collaboration from the market research team; and a second where market researchers carry some responsibility for furthering a project, in the light of the understanding they have gained from carrying out the research. Mr. Waddams coins the phrases “passive function” and “dynamic function”, respectively, for these different rôles of market research.  相似文献   
965.
966.
This article is designed to introduce the techniques used to convert traditionally maintained department budgets to baseline budgets. This entails identifying key activities, evaluating for value-added, and implementing continuous improvement opportunities. Baseline Budgeting for Continuous Improvement was created as a result of a newly named company president's request to implement zero-based budgeting. The president was frustrated with the mind-set of the organization, namely, "Next year's budget should be 10 to 15 percent more than this year's spending." Zero-based budgeting was not the answer, but combining the principles of activity-based costing and the Just-in-Time philosophy of eliminating waste and continuous improvement did provide a solution to the problem.  相似文献   
967.
As APICS practitioners, we all must share a common goal. How can we contribute to our company's success? Success can be measured in positive terms of market share, growth, profitability, return on investment, or some combination thereof. Each company must establish its own definition of success. For the purposes of this article, success will be equated to one word that we can all readily identify with: survival. What skills do we need to survive in the marketplace of the next millennium?  相似文献   
968.
Walk into any organization and you will get a snapshot of the company in action--people and products moving every which way. But ask for a picture of the company and you will be given the org chart, with its orderly little boxes showing just the names and titles of managers. Now there's a more revealing way to depict the people and operations within an organization--an approach called the organigraph. The organigraph is not a chart. It's a map that offers an overview of the company's functions and the ways that people organize themselves at work. Perhaps most important, an organigraph can help managers see untapped competitive opportunities. Drawing on the organigraphs they created for about a dozen companies, authors Mintzberg and Van der Heyden illustrate just how valuable a tool the organigraph is. For instance, one they created for Electrocomponents, a British distributor of electrical and mechanical items, led managers to a better understanding of the company's real expertise--business-to-business relationships. As a result of that insight, the company wisely decided to expand in Asia and to increase its Internet business. As one manager says, "It allowed the company to see all sorts of new possibilities." With traditional hierarchies vanishing and newfangled--and often quite complex--organizational forms taking their place, people are struggling to understand how their companies work. What parts connect to one another? How should processes and people come together? Whose ideas have to flow where? With their flexibility and realism, organigraphs give managers a new way to answer those questions.  相似文献   
969.
We discuss the effects of managed care on the structure of the health care delivery system, focusing on managed-care-induced consolidation among health care providers. We empirically investigate the relationship between HMO market share and mammography providers. We find evidence of consolidation: increases in HMO activity are associated with reductions in the number of mammography providers and with increases in the number of services produced by remaining providers. We also find that increases in HMO market share are associated with reductions in costs for mammography and with increases in waiting times for appointments, but not with worse health outcomes.  相似文献   
970.
A number of studies have used the Capital Asset Pricing Model (CAPM) to integrate product market and financial theories of the firm. We reexamine the relationship between product market structure and systematic risk at the firm and industry level. We show that theory yields no testable implications at the firm level. We show, however, that there is a relationship between the intraindustry dispersion of systematic risk and industry concentration which depends on the causes and consequences of concentration. Estimates of the relationship between the intraindustry variance of and concentration for a 1987 cross-section of U.S. industries suggest that concentration allows larger firms to exercise market power.  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