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   9830篇
  免费   257篇
  国内免费   1篇
财政金融   1761篇
工业经济   816篇
计划管理   1745篇
经济学   2206篇
综合类   220篇
运输经济   46篇
旅游经济   141篇
贸易经济   1560篇
农业经济   412篇
经济概况   1150篇
信息产业经济   1篇
邮电经济   30篇
  2020年   116篇
  2019年   141篇
  2018年   184篇
  2017年   217篇
  2016年   199篇
  2015年   141篇
  2014年   196篇
  2013年   914篇
  2012年   277篇
  2011年   279篇
  2010年   262篇
  2009年   303篇
  2008年   282篇
  2007年   258篇
  2006年   205篇
  2005年   184篇
  2004年   189篇
  2003年   195篇
  2002年   155篇
  2001年   209篇
  2000年   212篇
  1999年   181篇
  1998年   178篇
  1997年   205篇
  1996年   179篇
  1995年   181篇
  1994年   167篇
  1993年   168篇
  1992年   197篇
  1991年   191篇
  1990年   151篇
  1989年   155篇
  1988年   125篇
  1987年   122篇
  1986年   127篇
  1985年   186篇
  1984年   158篇
  1983年   173篇
  1982年   142篇
  1981年   174篇
  1980年   147篇
  1979年   167篇
  1978年   138篇
  1977年   121篇
  1976年   125篇
  1975年   109篇
  1974年   108篇
  1973年   85篇
  1972年   66篇
  1971年   60篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
171.
172.
Historically, major consideration given to product management has focused on research and development or the introductory stage of the product life cycle. The authors present an empirical study delineating the variables to be considered in the product elimination process. More specifically, the elimination process is evaluated under a situation of poor product performance despite a generally viable market. The basic objectives of the study were: to determine the significant variables in the product elimination process of the Small Appliance Industry; to determine the relative importance of the variables; to examine the interaction among variables. The data obtained through personal structured questionnaire interviews were analyzed and provided a ranking of twenty-six variables relevant to the elimination process. Moreover, the Johnson's Hierarchical Clustering Schemes was applied to determine the interaction among variables. The results indicate that profitability and financial variables are most significant in the elimination decision-process. Second, the primary clusters of importance are concerned with market share, market growth rate, consumer awareness, and competitive action.  相似文献   
173.
There is growing evidence of a litigation mentality rampant in organizations, which has created a legalistic mindset in many managers. Increasingly, managerial decisions are becoming dominated by a concern for what is legally defensible at the expense of broader social considerations such as justice and fairness. The papers in this special issue explore how this legalistic mindset has created new organizational and social dilemmas, and situations of law whithout justice.  相似文献   
174.
B. D. Sharma  H. C. Gupta 《Metrika》1976,23(1):155-165
Summary In the study of information theoretic measures, additivity has been the basic requirement. However it is quite interesting to investigate the sub-additive measures. Starting from subadditivity for measures associated with a pair of distributions of a discrete random variable, it has been changed into an equality relation using another function of a pair of distributions., Under the sum property of the function and the measures, the relation is expressed in terms of a functional equation of which the most general complex solutions have been obtained. In terms of the real continuous solutions of the functional equation, the sub-additive measures of Relative information and Inaccuracy have been defined and characterized. Particular cases and simple properties particularly the convexities of some of these new measures have also been studied.  相似文献   
175.
In this paper, data envelopment analysis (DEA) techniques are applied to the French nursing home industry in order to address two policy issues. The first involves nursing home size and returns to scale, while the second deals with the potential effects of a change in nursing home reimbursement from a flat rate to one based on the severity of case-mix. To accomplish this, our analysis expands on the existing nursing home literature to analyze technical and allocative efficiency along with budget-constrained models rather than the more common direct input-based distance function. Technical efficiency is evaluated via an indirect output distance function while allocative output efficiency is computed with a cost indirect revenue function. The findings suggest that system-wide efficiency and equity may result from coming reforms since payments would more accurately reflect resource use.  相似文献   
176.
With the development of an MCMC algorithm, Bayesian model selection for the p 2 model for directed graphs has become possible. This paper presents an empirical exploration in using approximate Bayes factors for model selection. For a social network of Dutch secondary school pupils from different ethnic backgrounds it is investigated whether pupils report that they receive more emotional support from within their own ethnic group. Approximated Bayes factors seem to work, but considerable margins of error have to be reckoned with.  相似文献   
177.
Whistle-blowing in America business and industry has increased as interest in ethical business behavior and the cost of unethical behavior have grown. Whistle-blowing plays the important role of helping to fill the gaps in the regulatory system that is designed to check the abuse of organizational power. However, the practice of whistle-blowing is controversial and whistle-blowers often pay a high price for their actions. Firms can engage in a number of actions to encourage whistle-blowing. Creating a climate that encourages employees to report organizational wrong doing and that protects the whistle-blower is critical. To create such a climate the organization must build trust and cooperation by educating employees in the benefits of ethical and legal behavior.  相似文献   
178.
Behavioural Microsimulation with Labour Supply Responses   总被引:1,自引:0,他引:1  
This paper provides a technical survey of recent developments in behavioural microsimulation. We discuss the criteria by which models of labour supply may be chosen for application to behavioural microsimulation, and consider how such models may be augmented to control for fixed costs, child–related work costs, preference heterogeneity and endogeneity in wages. We describe methods by which non–linear budget constraints may be accommodated in estimation, policy simulations and welfare analysis, and discuss how stochastic terms may be factored into the simulation of behavioural responses to a policy shock.  相似文献   
179.
Much research on internal labor markets has been hampered by the failure to differentiate the wide variety of ILMs, by accounts of their determinants that too heavily emphasize isolated causal factors, by the lack of detailed material describing the economic and organizational dimensions of their design and implementation, and by the neglect of managerial perceptions of and motivations for constructing ILMs. This paper presents detailed case studies of three organizations that have constructed very different ILMs. Based on this material, a model of the determinants of ILMs is developed that centers around the concepts of costs, commitment, and rewards and that attempts to assess the interactions of effects of markets and hierarchies on ILMs. The model is built on the premise that the underlying imperatives typically held to affect ILMs are inevitably filtered through managerial beliefs and the constraints on managerial decision making. The implications of these findings for theory and research on ILMs are discussed.  相似文献   
180.
B. C. Gupta 《Metrika》1973,20(1):209-214
Summary In this paper, relationships between generalizedh-statistics which estimate powers and products of central moments unbiasedly and the polykays by using ordered partitions are established. A table expressing generalizedh-statistics of weight 12 in terms of polykays and vice versa is presented. Expressions of weight less than 12 are obtained from this table.
Zusammenfassung In der vorliegenden Arbeit wird mittels geordneter Zerlegungen eine Beziehung zwischen verallgemeinerterh-Statistik, welche Potenzen und Produkte von zentralen Momenten erwartungstreu abschätzt, und polykays hergestellt. Eime Tabele mit verallgemeinerterh-Statistik vom Gewicht 12 in polykay-Termen, und umgekehrt, wird gegeben. Gewichtsausdrücke kleiner als 12 werden aus dieser Tabelle gewonnen.


This research has been supported by a grant from FINEP/Ministério do Planejamento e Coordenacão Geral to the IMUFRJ.  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