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951.
This paper studies the efficiency of competitive equilibria in environments with a moral hazard problem and unobserved states, both with retrading in ex post spot markets. The interaction between private information problems and the possibility of retrade creates an externality, unless preferences have special, restrictive properties. The externality is internalized by allowing agents to contract ex ante on market fundamentals determining the spot price or interest rate, over and above contracting on actions and outputs. Then competitive equilibria are equivalent with the appropriate notion of constrained Pareto optimality. Examples show that it is possible to have multiple market fundamentals or price-islands, created endogenously in equilibrium. 相似文献
952.
953.
954.
Luiz C.M. Miranda C.A.S. LimaAuthor vitae 《Technological Forecasting and Social Change》2011,78(8):1445-1470
Logistic and power law methodologies for both retrospective and prospective analyses of extended time series describing evolutionary growth processes, in environments with finite resources, are confronted. While power laws may eventually apply only to the early stages of said growth process, the Allee logistic model seems applicable over the entire span of a long range process. On applying the Allee logistic model to both the world population and the world gross domestic product time series, from 1 to 2008 AD, a projection was obtained that along the next few decades the world should experience a new economic boom phase with the world GDP peaking around the year 2020 and proceeding from then on towards a saturation value of about 142 trillion international dollars, while the world population should reach 8.9 billion people by 2050. These results were then used to forecast the behavior of the supply and consumption of energy and food, two of the main commodities that drive the world system. Our findings suggest that unless the currently prevailing focus on economic growth is changed into that of sustainable prosperity, human society may run into a period of serious economical and social struggles with unpredictable political consequences. 相似文献
955.
This paper investigates people's preferences for live theatre, and heterogeneity in willingness‐to‐pay (WTP). A stated preference discrete choice model estimates utility and WTP for different attributes of theatre productions. Previous studies assumed fixed coefficients across all theatre‐goers. This study allows coefficients of attributes to vary across individuals in the population, providing information on the heterogeneity of tastes. Theatre‐goers' choices are used to estimate individual‐based parameters for a person's tastes in theatre productions. The analysis reveals the heterogeneity of tastes for different types of plays and ticket price; and the significance of ‘reviews’ by critics and ‘word of mouth’ opinions as important variables determining choice. 相似文献
956.
Cristiana M. FrittaionAuthor Vitae Peter N. DuinkerAuthor VitaeJill L. GrantAuthor Vitae 《Technological Forecasting and Social Change》2011,78(3):421-430
Scenario analysis is an approach to long-term planning that informs decision-making in contexts of highly uncertain future conditions. Scenario-based studies are rapidly growing in popularity, yet many aspects of the method are not fully understood. Participants' willingness to suspend disbelief in possible futures is an integral component of scenario-based studies, essential for considering alternative future scenarios, yet little is known about the factors that affect it. Participation in a scenario project does not necessarily imply willingness or ability to suspend disbelief; participants may not suspend disbelief simply upon request. However, the scenario literature says little about the aspects of scenario-based studies that influence suspension of disbelief.This article explores the factors that influenced the suspension of disbelief in one scenario exercise about the future of Canada's forests. Participants differed in their abilities to suspend disbelief in the scenarios in part because of their past experiences and expertise in particular areas, and their assessments of probable and desired future outcomes. Elements of the project design and implementation influenced participants' abilities to engage the scenarios. The results have implications for those interested in using scenarios for helping people and communities envision possible - and sustainable - futures. 相似文献
957.
Nicholas Powers Allen Blackman Thomas P. Lyon Urvashi Narain 《Environmental and Resource Economics》2011,50(1):131-155
Public disclosure programs that collect and disseminate information about firms’ environmental performance are increasingly
popular in both developed and developing countries. Yet little is known about whether they actually improve environmental
performance, particularly in the latter setting. We use detailed plant-level survey data to evaluate the impact of India’s
Green Rating Project (GRP) on the environmental performance of the country’s largest pulp and paper plants. We find that the
GRP drove significant reductions in pollution loadings among dirty plants but not among cleaner ones. This result comports
with statistical and anecdotal evaluations of similar disclosure programs. We also find that plants located in wealthier communities
were more responsive to GRP ratings, as were single-plant firms. 相似文献
958.
Elisabeth Gsottbauer Jeroen C. J. M. van den Bergh 《Environmental and Resource Economics》2011,49(2):263-304
Established environmental policy theory is based on the assumption of homo economicus. This means that people are seen as fully rational and acting in a self-regarding manner. In line with this, economics emphasizes
efficient policy solutions and the associated advantages of price incentives. Behavioral economics offers alternative, more
realistic views on individual behavior. In this paper we investigate opportunities to integrate bounded rationality and other-regarding
preferences into environmental policy theory to arrive at recommendations for more effective policies. For this purpose, we
will address decisions made under risk and uncertainty, intertemporal choice, decision heuristics, other-regarding preferences,
heterogeneity, evolutionary selection of behaviors, and the role of happiness. Three aspects of environmental policy are considered
in detail, namely sustainable consumption, environmental valuation and policy design. We pay special attention to the role
of non-pecuniary, informative instruments and illustrate the implications for climate policy. 相似文献
959.
Sabine M. Kempa 《Heilberufe》2011,63(5):42-45
Randerscheinung oder Zukunftsl?sung? - Mehr M?nner in der Pflege, lautet das erkl?rte Ziel der Politik, um den drohenden Pflegenotstand
abzuwenden. Braucht die Pflege mehr M?nner? Wie viele arbeiten bereits in pflegenden Berufen? Und was sagen die Frauen in
der Pflege dazu? Wir haben uns umgeh?rt. 相似文献
960.
Sabine M. Kempa 《Heilberufe》2011,63(7):53-54
Pflegep?dagogik (Bachelor/Master) - Der Ruf nach qualifiziertem Pflegepersonal setzt voraus, dass deren Aus- und Weiterbildung
selbst entsprechende Anforderungen erfüllt. Den Einsatz von qualifizierten Lehrkr?ften mit speziellen, berufsp?dagogischen
Kenntnissen und F?higkeiten beispielsweise. Studieng?nge zur Berufsp?dagogik im Gesundheitswesen bereiten auf die anspruchsvolle
T?tigkeit vor. 相似文献