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61.
Readily available data are used to provide relevant decision making information on the highly subjective issue of animal rights. Two examples of alleged crowding; cattle being finished in concrete lots, and broilers in confined operations were evaluated to determine the impact on producers and consumers from increasing space per animal. It is concluded that similar policy changes, such as doubling floor space, can lead to dramatic differences in economic impact depending on the industry affected. It is shown that economic analysis can provide valuable information in estimating the tradeoffs in moral issues. James R. Simpson is Professor and Livestock Marketing Economist at the Food and Resource Economics Department, University of Florida, Gainesville, U.S.A. He was formerly President and Senior Economist of InterAmerican Research Associates, and Cooperative Advisor of the Cooperative League of U.S.A. He was Scholar-in-Residence at the Rockefeller Foundation, Villa Serbelloni at Bellagio, Italy, 1979 and Visiting Research Professor at Kyoto University, Fall, 1982. His most important publications are: James R. Simpson and Don Farris, The World's Beef Business and Toward a Humanist Consensus on Ethics of International Development, in Morris Storer (ed.), Humanist Ethics. He is also author or co-author of over 100 articles in professional journals and chapters in books on livestock, international development and ethics. Bernard E. Rollin is Professor of Philosophy and Professor of Physiology and Biophysics at the Colorado State University. His book Animal Rights and Human Morality (Prometheus Books) was selected as Outstanding Academic Book, in Choice Magazine, 1981. Other important publications by him are: Natural and Conventional Meaning: An Examination of the Distinction (Mouton, 1976); Papers published in the Journal of the American Veterinary Medical Association; Poetics; Kant-Studien; and Perspectives in Biology and Medicine.  相似文献   
62.
A bstract An international carbon tax has been the subject of considerable recent discussion as an economic incentive instrument to combat the perceived threat of global warming lesuking, primarily, from the use of the carbon emitting fossils–coal, oil, and natural gas–in the production of energy. During 1991, the European Union proposed the adoption of such a tax to be imposed by each member nation. The economic merits as well as the problems associated with the proposed European carbon tax are discussed along with the political prospects for its adoption. It is concluded that even though early adoption of the tax is unlikely, the economic merits of this tax instrument for the alleviation of global warming accompanied by changing political parameters may lead to its adoption in the long run.  相似文献   
63.
This study examined the effect of definitions for organic and natural on willingness to pay a premium for organic over natural chicken. Data were collected using surveys and experimental auctions that were conducted before and after information was presented. Before information, approximately two‐thirds of participants inaccurately equated the requirements of natural with those for organic. After information, nearly 50% increased their premium, while 30% decreased their premium. Logistic regression results showed that consumers who had overestimated the requirements for natural were most likely to have an increased premium after information, with significantly higher bids for organic. For those who decreased their premium after information, awareness of consuming genetically modified (GM) foods was a key variable. The non‐genetically modified (non‐GM) requirement of organic appears to be of low value to some consumers. Overall, consumer confusion regarding organic and natural standards may be having substantial impacts on the two markets.  相似文献   
64.
Proponents argue that mergers should be encouraged as a legitimate strategy to avert (presumably undesirable) hospital closures. More recently, antitrust activity directed at not-for-profit hospitals has intensified. This study attempts to shed some light on the policy debate by testing whether merger targets are indeed candidates for closure, namely hospitals with persistent losses. Acquisitions of independent not-for-profit hospitals by other hospitals and by multihospital corporations are observed from a national sample for the period 1982–1987. The likelihood of being acquired in during any year within that period is estimated using a discrete-time hazard rate model. We find no evidence to support the notion that hospitals with weak financial indicators are more likely to be acquired. Rather, we find that hospitals with high operating-margins that are located in less regulated markets, and to a certain extent in high-growth markets, are more likely to be acquired. These findings cast doubt on certain predictions found in the theoretical literature, but are in agreement with empirical studies of other industries.  相似文献   
65.
Kurt Lewin and the Planned Approach to Change: A Re-appraisal   总被引:3,自引:0,他引:3  
abstract The work of Kurt Lewin dominated the theory and practice of change management for over 40 years. However, in the past 20 years, Lewin's approach to change, particularly the 3-Step model, has attracted major criticisms. The key ones are that his work: assumed organizations operate in a stable state; was only suitable for small-scale change projects; ignored organizational power and politics; and was top-down and management-driven. This article seeks to re-appraise Lewin's work and challenge the validity of these views. It begins by describing Lewin's background and beliefs, especially his commitment to resolving social conflict. The article then moves on to examine the main elements of his Planned approach to change: Field Theory; Group Dynamics; Action Research; and the 3-Step model. This is followed by a brief summary of the major developments in the field of organizational change since Lewin's death which, in turn, leads to an examination of the main criticisms levelled at Lewin's work. The article concludes by arguing that rather than being outdated or redundant, Lewin's approach is still relevant to the modern world.  相似文献   
66.
Planning as part of public sector decision-making situations is an activity of critical importance, with direct relevance for urban planners. The ramifications of such decisions generally have significant effect on peoples’ lives. The current paper deals with the comparison between territorial maps in the context of districting problems with a strong socio-economic component. The theoretical problem involves the comparison of two partitions in a connected, undirected, and planar graph. In considering this problem, we introduce three new indices to compare territory partitions: compatibility, inclusion, and distance, all of which have importance for real-world planning situations. Numerical experiments of these indices were carried out for the communes network in (Iˆle de France), France.  相似文献   
67.
68.
This study investigates the relevance of reported earnings in the context of an institutional environment, i.e., Switzerland, in which investors focus on dividends. In conjunction with a dividend focus, the financial reporting environment faced by Swiss firms provides their managers with more accounting discretion than managers of Anglo-Saxon firms typically have. From a contractual perspective, dividendbased earnings management is expected since Swiss corporate law explicitly states that dividends, which must be voted on by stockholders, are to be based upon a firm's reported earnings. From a value perspective, thin trading conditions and a long-term investment horizon are expected to increase the importance of dividend payments and to influence the informativeness of reported earnings. Results indicate that Swiss managers do engage in dividend-based earnings management, that earnings quality signals are used by managers to voluntarily constrain their accounting choices and that the value relevance of earnings is conditional upon dividend payments.  相似文献   
69.
This paper considers finite sample motivated structural change tests in the multivariate linear regression model with application to energy demand models, in which case commonly used structural change tests remain asymptotic. As in Dufour and Kiviet [1996. Exact tests for structural change in first-order dynamic models. Journal of Econometrics 70, 39–68], we account for intervening nuisance parameters through a two-stage maximized Monte Carlo test procedure. Our contributions can be classified into five categories: (i) we extend tests for which a finite-sample theory has been supplied for Gaussian distributions to the non-Gaussian context; (ii) we show that Bai et al. [1998. Testing and dating common breaks in multi-variate time series. The Review of Economic Studies 65 (3), 395–432] test severely over-rejects and propose exact variants of this test; (iii) we consider predictive break test approaches which generalize tests in Dufour [1980. Dummy variables and predictive tests for structural change. Economics Letters 6, 241–247] and Dufour and Kiviet [1996. Exact tests for structural change in first-order dynamic models. Journal of Econometrics 70, 39–68]; (iv) we propose exact (non-Bonferonni based) extensions of the multivariate outliers test from Wilks [1963. Multivariate statistical outliers. Sankhya Series A 25, 407–426] to models with covariates; (v) we apply these tests to the energy demand system analyzed by Arsenault et al. [1995. A total energy demand model of Québec: forecasting properties. Energy Economics 17 (2), 163–171]. For two out of the six industrial sectors analyzed over the 1962–2000 period, break and further goodness-of-fit and diagnostic tests allow to identify (and correct) specification problems arising from historical regulatory changes or (possibly random) industry-specific effects. The procedures we propose have potential useful applications in statistics, econometrics and finance (e.g. event studies).  相似文献   
70.
We consider a two-date model of a financial exchange economy with finitely many agents having nonordered preferences and portfolio constraints. There is a market for physical commodities at any state today or tomorrow and financial transfers across time and across states are allowed by means of finitely many nominal assets or numéraire assets. We prove a general existence result of equilibria for such a financial exchange economy in which portfolios are defined by linear constraints, extending the framework of linear equality constraints by Balasko et al. (1990), and the existence results in the unconstrained case by Cass (1984, 2006), Werner (1985), Duffie (1987), and Geanakoplos and Polemarchakis (1986). Our main result is a consequence of an auxiliary result, also of interest for itself, in which agents’ portfolio constraints are defined by general closed convex sets and the financial structure is assumed to satisfy a “nonredundancy-type” assumption, weaker than the ones in Radner (1972) and Siconolfi (1989).  相似文献   
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