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141.
David Newhouse 《Review of Development Economics》2005,9(3):415-433
This paper estimates the persistence of transient income shocks to farm households in rural Indonesia. Persistence is defined as the elasticity of a household's 1997 household per capita income with respect to its 1993 per capita income, controlling for time‐invariant characteristics of the household. Local rainfall levels are used as an exogenous source of transitory variation in 1993 income. Four main conclusions emerge. First, roughly 30% of household income shocks remain after four years. Second, the persistence of negative and positive shocks is approximately equal; if anything, positive shocks last longer. Third, neither positive nor negative income shocks disproportionately affect poor households. Finally, measurement error in income and unobserved household heterogeneity are important sources of bias. These findings cast doubt on common arguments advocating public intervention to stabilize or redistribute income, and suggest that anti‐poverty policy should address more permanent causes of household poverty. 相似文献
142.
P.Jean-Jacques Herings Ronald Peeters Maarten Pieter Schinkel 《European Economic Review》2005,49(5):1207-1223
In this paper, we report on an equilibrium with market dominance that exists in a simple two-firm model that features neither entry barriers nor sophisticated punishment strategies. This equilibrium induces an intertemporal market division in which the two firms alternate as monopolists - despite the fact that the model also sustains a Cournot duopoly. Even when initially both firms are active in the market, the alternating monopoly reveals itself rather quickly. Moreover, it Pareto dominates the Cournot equilibrium - as it is close to the cartel outcome. Several examples of what well may be such alternating monopolies are presented. 相似文献
143.
This paper is an exercise in the history of thought, which compares Austrian and neoclassical theories of the emergence of
private property rights, and examines, in part, the extent to which Austrians can be said to offer a commonly-agreed upon
explanation that parallels Carl Menger's exemplary story of the emergence of money. We address the sources of disagreement
(and apparent conflict) among emergence theorists in both schools. We try to show that some of the disagreement hinges on
an unclear meaning of the term “emergence,” which is resolvable, while other sources of disagreement are fundamental at the
methodological level.
JEL Code B25, E40, E53 相似文献
144.
Policies such as the SEC’s Fair Disclosure Rule, and technologies such as SEC EDGAR, aim to disseminate corporate disclosures
to a wider audience of investors in risky assets. In this study, we adopt an experimental approach to measure whether this
wider disclosure is beneficial to these investors. Price-clearing equilibrium models based on utility maximization and non-revealing
and fully-revealing prices predict that in a pure exchange economy, an arbitrary trader would prefer that no investors are
informed rather than all are informed; non-revealing theory further predicts that an arbitrary trader would prefer a situation
in which all traders are informed rather than half the traders are informed. These predictions can be summarized as “None
> All > Half”. A laboratory study was conducted to test these predictions. Where previous studies have largely focused on
information dissemination and its effects on equilibrium price and insider profits, we focus instead on traders’ expected
utility, as measured by their preferences for markets in which none, half, or all traders are informed. Our experimental result
contradicts the prediction and indicates “Half > None > All”, i.e. subjects favor a situation where a random half is informed.
The implication is that in addition to testing predictions of price equilibrium, experiments should also be used to verify
analytical welfare predictions of expected utility under different policy choices.
JEL Classification D82, D53, G14, L86
This work was largely completed while this author was at The Hong Kong University of Science and Technology. 相似文献
145.
In this paper we study an industry in which there is an ongoing sequence of R&D races between two firms. Firms are engaged in product innovation. Products are horizontally and vertically differentiated. There are two key characteristics/dimensions to products, and the level at which these are embodied in products can be increased by R&D. At each time firms can spend R&D on improving their product in one or both dimensions. We allow the possibility of economies scope — so R&D undertaken in one dimension can spillover to the other. The question we are interested in is whether a firm that is ahead in a single dimension but behind in another will focus all its R&D effort in the area in which it is ahead (product specialisation), or whether it will try to do R&D in both dimensions in the hope that it might get ahead in both and end up with a superproduct that dominates in both characteristics. The outcome of this R&D competition determines a Markov transition probability matrix determining the evolution of the industry. We show that when the R&D technology is characterized by constant returns then the only steady-state outcome is one in which the economy stays forever in a position in which one firm produces a super-product and the other gives up doing R&D altogether. This outcome is unaffected by the degree of economies of scope. When the R&D technology is characterised by decreasing returns, then the industry will visit all states and so will exhibit both product specialisation and superproduct dominance at various times. Now the extent of economies of scope matters and we show that the greater the extent of economies of scope, the less likely is the industry to exhibit product dominance, and the more likely it is to exhibit product specialisation. 相似文献
146.
The largest market in national economies is the labor market. Labor market contracting is characterized by job search, often from unknown wage offer distributions. This paper reports experimental tests of finite horizon models of job search in which the wage offer distribution is unknown. Theoretically-optimal search from an unknown wage offer distribution can have the seemingly paradoxical property that some offers will be accepted that are lower than other offers that will be rejected in the same period of the search horizon. Thus the reservation wage property (or lowest acceptable wage path) may not exist. This can occur because an offer that is a priori relatively high (good news) can imply that it is highly probable that search is from a favorable distribution, and such an offer can look unattractive when it is an a posteriori relatively low offer from a favorable distribution (bad news). This paper reports results from experimental treatments for search from unknown distributions in which the reservation wage property does exist and treatments in which it does not exist. We find that the consistency of search behavior with search theory reported in earlier papers is robust to the presence or absence of the reservation wage property and to whether the draws come from known or unknown distributions. 相似文献
147.
David J. 《Technological Forecasting and Social Change》2005,72(4):471-479
Recently, two analyses have tried to put technological progress in a larger context. One interpretation hypothesizes that technological progress is likely to continue at increasingly higher rates of change. Another interpretation, which includes data from the beginning of the universe to the present, suggests that the universe is approaching a transition point in a logistic development of complexity. This logistic development is similar to the way ideas or products diffuse in a population, i.e., the rate of discovery in a field of knowledge is proportional to the amount discovered and the amount to be discovered. To test a part of this hypothesis, a leading indicator field (fundamental physics) was identified and the events in the history of this field were analyzed. Twelve subfields were identified and grouped into six stages. Each stage seemed to demonstrate a logistic-like development. By analyzing both the median time of development and the characteristic time of development of these stages, the overall development of this one field was found to suggest logistic development. These data seem to indicate that development in fundamental physics is slowing down, with at least one subfield beyond string physics yet to be developed. The data tend to support the hypothesis that a knowledge field can develop logistically. 相似文献
148.
Scott A. Quatro David A. Waldman Benjamin M. Galvin 《Human Resource Management Review》2007,17(4):427
Leadership development and practice have traditionally been quite narrow, with a decided focus on the analytical realm of leadership. However, the contemporary climate of corporate scandal and resultant loss of societal confidence, coupled with the evolving demands, needs, and expectations of employees, point to the potential need for a more holistic approach to leadership. Thus, this article proposes how management education and leadership development programs can develop holistic leaders that are adept at operating in the analytical, conceptual, emotional, and spiritual domains of leadership practice. An integrated model for holistic leadership development and practice that addresses all four of these domains is proposed, and grounded in both established and emerging leadership development theory. Additionally, a leadership development classification scheme is proposed based on classroom, job, and organizational contexts. 相似文献
149.
A bstract . Clarence E. Ayres was unfortunate in certain of his critics; they missed the point. With the publication of a new edition of his classic. The Theory of Economic Progress , the time is ripe to re-evaluate Ayres' contributions. Ayres, like Thorstein Veblen before him, assimilated into economics the findings of other social science and humanistic disciplines, particularly anthropology. Both portrayed clearly the role in the economy of what Veblen called the matter-of-fact and Ayres 'technology,' The understanding of the role of technology and its extension in economic progress , implicit in Veblen, is made explicit by Ayres. Similarly the insight that certain entrepreneurial and financial activities which are ceremonial are non-essential to the technological process and hence dispensable is a contribution by Ayres to the one by Veblen that enables us to distinguish the scientific elements in economic theory from the theological. 相似文献
150.
Charles D. DeLorme Jr . David R. Kamerschen David C. Redman 《American journal of economics and sociology》1992,51(4):421-421
Abstract . Rent seeking involves the wasteful expenses incurred to secure, acquire, or maintain a monopoly position. Rent avoiding involves the expenditures undertaken to avoid the imposition of rent-seeking costs. Each represents a social cost of Tullock rectangle loss in addition to the dead-weight or Harberger triangle loss that combined to form the Harberger-Tullock trapezoid social cost. The first Food Stamp Program in the United States came about through the rent-seeking and/or rent-avoiding efforts of farmers, grocers, bankers, and other economic agents and did not lead to the promotion of social welfare. The evidence of these self-interested efforts was gleaned from articles in the New York Times and government documents. The first Food Stamp Program also fits the economic theory of regulation developed by Stigler, Jordan, Peltzman and others, and it involved imposed costs on economic agents as the program evolved. 相似文献