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   1299篇
  免费   33篇
财政金融   169篇
工业经济   91篇
计划管理   271篇
经济学   281篇
综合类   4篇
运输经济   7篇
旅游经济   5篇
贸易经济   286篇
农业经济   51篇
经济概况   128篇
邮电经济   39篇
  2021年   11篇
  2020年   18篇
  2019年   19篇
  2018年   23篇
  2017年   20篇
  2016年   30篇
  2015年   10篇
  2014年   39篇
  2013年   159篇
  2012年   41篇
  2011年   53篇
  2010年   40篇
  2009年   53篇
  2008年   39篇
  2007年   48篇
  2006年   35篇
  2005年   29篇
  2004年   44篇
  2003年   48篇
  2002年   43篇
  2001年   24篇
  2000年   22篇
  1999年   23篇
  1998年   21篇
  1997年   21篇
  1996年   28篇
  1995年   12篇
  1994年   10篇
  1993年   17篇
  1992年   13篇
  1990年   9篇
  1989年   10篇
  1988年   14篇
  1987年   14篇
  1986年   21篇
  1985年   25篇
  1984年   22篇
  1983年   15篇
  1982年   10篇
  1981年   10篇
  1980年   11篇
  1978年   13篇
  1977年   9篇
  1976年   8篇
  1975年   12篇
  1974年   9篇
  1973年   10篇
  1972年   15篇
  1970年   8篇
  1969年   9篇
排序方式: 共有1332条查询结果,搜索用时 15 毫秒
951.
Technology policy analysis emphasizes logical resolution of issues based on conceptual models, data, and analyses, but this often is not enough to accomplish anything. Policy-makers routinely disregard policy analyses, even when well done, timely, and pertinent to the issues at hand. Process management complements policy analysis by directing attention to the interactions through which disparate interests reconcile their differences to initiate viable action. We pose five questions that constitute a situational analysis decision tree. Based on answers to those questions, we distinguish five action approaches (including ‘do nothing’) that can enhance the utilization of technology analyses. These approaches demand skills, not always paramount in policy analysts, to run processes that engage stakeholders. We illustrate how process management can enhance the utilization of technology policy analysis through a hypothetical case.  相似文献   
952.
This study compares the effectiveness of five responses to external uncertainty in markets with network externalities: avoidance, imitation, control, cooperation, and real options reasoning as a form of strategic flexibility. Our analysis of 385 new technology ventures shows that direct and indirect network externalities have opposite effects on the effectiveness of these strategies. Moreover, under network externalities, attempts to make ventures less dependent upon environmental instabilities perform differently compared to attempts to control the environment. Finally, we show that real options reasoning does not always perform better under conditions of higher uncertainty, such as uncertainty due to direct network externalities.  相似文献   
953.
954.
This paper presents and validates a model of audience choice of local TV evening news programs. The model is derived from a model of individual viewer choice behavior that specifies a viewer's probability of choosing a particular news program as a function of the viewer's relative preference toward that program. The audience model is operationalized using a multinomial logit model. This specification is estimated and found to perform well. Implications of the model for management of TV stations and advertisers are discussed.  相似文献   
955.
The paper examines the optimal behavior of a single dealer who is faced with a stochastic demand to trade (modeled by a continuous time Poisson jump process) and facing return risk on his stock and on the rest of his portfolio (modeled by diffusion processes). Using stochastic dynamic programming, we derive the optimal bid and ask prices that maximize the dealer's expected utility of terminal wealth as a function of the state in which he finds himself. The relationship of the bid and ask prices to inventory of the dealer, instantaneous variance of return, stochastic arrival of transactions and other variables is examined.  相似文献   
956.
This article explores the notion that appraisers respond to a very rapid change in any factor that will ultimately affect real estate values only after they witness the effects of this change in actual marketplace transactions. An analysis of 685 responses to a recent national appraiser survey suggests that a cause and effect relationship exists between their energy related market experiences and their energy awareness level. Market imperfections and the difficulty of predicting future energy prices are identified as barriers that inhibit the appraisers' ability to achieve a high level of energy awareness.  相似文献   
957.
This article evaluates the distribution of public expenditure on subsidized goods and services over income categories. It is argued that undifferentiated application of usual measures of dispersion must be rejected when judging the distribution of these expenditures, because there are hardly any subsidized goods and services for which the government aims at equal consumption. Such an application requires a normative distribution of expenditure. The normative distribution of expenditure is derived from a normative distribution of consumption and the distribution of normative charges. Central elements are needs of consumers and their financial capacity. The normative distribution of consumption is based on government intentions with respect to the goods and services under consideration.  相似文献   
958.
959.
960.
The effects of production and consumption in the informal sectors, i.e., the black sector (illegal because of tax evasion) and the green (household) sector, are described by a macro model. Effects upon employment, balance of payments, and public deficit are considered. Empirical implementation with Danish data shows that the black and green sectors have negligible effects on the government deficit, and that activities in the green sector are much more harmful to white employment and the balance of payments than are activities in the black sector. The results indicate that formal and informal production of services — the major part of the black and green sectors — could be increased without much damage to the balance of payments and the government deficit. Whether such an increase of service production would also solve the social problems related to unemployment is more debatable, since many service jobs are likely to be considered by the public as unproductive uses of labour.
Zusammenfassung Die Auswirkungen von Produktion und Verbrauch im informellen Sektor, also im schwarzen Sektor (Schattenwirtschaft, die wegen Steuerhinterziehung illegal ist) und im grünen Sektor (private Haushalte) werden anhand eines Makromodells beschrieben. Die Wirkungen auf die Beschäftigung, auf das Zahlungsbilanzgleichgewicht und auf die Staatsverschuldung stehen dabei im Mittelpunkt. Die empirische Analyse anhand dänischer Daten macht deutlich, daß der schwarze und der grüne Sektor zu vernachlässigende Auswirkungen auf das Haushaltsdefizit haben, sowie, daß Aktivitäten des grünen Sektors der Vollbeschäftigung und dem Zahlungsbilanzgleichgewicht im weißen Sektor weitaus mehr schaden als Aktivitäten des schwarzen Sektors.Die Ergebnisse zeigen, daß die formelle und informelle Produktion von Dienstleistungen — Hauptbestandteil des schwarzen und grünen Sektors — ohne größeren Schaden für die Zahlungsbilanz und für das Haushaltsdefizit ausgeweitet werden könnten. Ob ein derartiger Anstieg der Dienstleistungsproduktion die mit der Arbeitslosigkeit verbundenen sozialen Probleme lösen könnte, ist fraglich. Denn die Öffentlichkeit neigt dazu, viele Dienstleistungen als unproduktive Verwendung von Arbeitskraft anzusehen.


Hans Aage is an associate professor at the Institute of Economics, University of Copenhagen, Studiestræde 6, DK-1455 Copenhagen K, Denmark.  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