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111.
Christophe Boucher Gregory Jannin Patrick Kouontchou Bertrand Maillet 《Review of International Economics》2013,21(3):475-491
Following the recent crisis and the revealed weakness of risk management practices, regulators of developed markets have recommended that financial institutions assess model risk. Standard risk measures, such as the value‐at‐risk (VaR), emerged during the 1990s as the industry standard for risk management and become today a key tool for asset allocation. This paper illustrates and estimates model risk, and focuses on the evaluation of its impact on optimal portfolios at various time horizons. Based on a long sample of US data, the paper finds a non‐linear relation between VaR model errors and the horizon that impacts optimal asset allocations. 相似文献
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113.
Bertrand Candelon Jan Piplack Stefan Straetmans 《Oxford bulletin of economics and statistics》2009,71(5):715-737
In this paper, we study the degree of business cycle synchronization by means of a small sample version of the Harding and Pagan's [Journal of Econometrics (2006) Vol. 132, pp. 59–79] Generalized Method of Moment test. We show that the asymptotic version of the test gets increasingly distorted in small samples when the number of countries grows large. However, a block bootstrapped version of the test can remedy the size distortion when the time series length divided by the number of countries T/n is sufficiently large. Applying the technique to a number of business cycle proxies of developed economies, we are unable to reject the null hypothesis of a non‐zero common multivariate synchronization index for certain economically meaningful subsets of these countries. 相似文献
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The framework of Geweke (1982. Journal of the American Statistical Association 77, 304–324.) and Hosoya (1991. Probability Theory and Related Fields 88, 429–444.) is adopted to construct a simple test for causality in the frequency domain. This test can also be applied to cointegrated systems. To study the large sample properties of the test, we analyze the power against a sequence of local alternatives. The finite sample properties are investigated by means of Monte Carlo simulations. Our methodology is applied to investigate the predictive content of the yield spread for future output growth. Using quarterly US data we observe reasonable leading indicator properties at frequencies around one year and typical business cycle frequencies. 相似文献
116.
Trade Liberalization and Industrial Restructuring: The Role of Cross-Border Mergers and Acquisitions 总被引:2,自引:0,他引:2
This paper analyzes industry adjustments to trade liberalization. It introduces cross-border mergers and acquisitions (M&A) as an alternative mode of industrial restructuring to firms' exit. In a two-country Cournot model, we examine the responses of domestic and foreign firms endowed with different technologies for different stages of trade openness. It is found that the less efficient firm loses market shares in its home market at the beginning of trade liberalization. Only for a more advanced level of liberalization, does it take advantage of a larger access to foreign demand. Trade liberalization may therefore harm its profits too strongly, forcing it to leave the market. However, although its incentives decrease with trade liberalization, the high-technology firm may be willing to take it over for low organizational and technological costs of firms' integration. In addition, it may buy it out even if the less efficient firm manages to stay. Then, trade liberalization affects M&A incentives depending on the technological gap. For low and high (medium) gap, there is an inverted U- (W-) shaped relation between trade costs and incentives to merge. Moreover, although technology transfer is assumed to be complete, M&A may lead to a reduction in consumers' welfare. Firms may capture some pro-competitive gains from economic openness. Lastly, an empirical analysis based on a data set of OECD members' multinationals gives some support to these theoretical predictions. 相似文献
117.
Bertrand Crettez Philippe Michel & Bertrand Wigniolle 《Journal of Public Economic Theory》2002,4(4):499-521
In this paper, we study the intertemporal equilibria of an infinite–lived representative agent model with public debt. We show that for a given path of government expenditures, there generally exists a continuum of equilibria depending on various debt policies. These equilibria are characterized by different paths of consumption and leisure. Two examples illustrate the results: in the first one consumption and leisure may converge to zero, in the second one consumption goes to infinity while leisure goes to its maximum value. In a third example with externalities à la Romer, the standard intertemporal equilibrium with zero public debt may be dominated by other intertemporal equilibria. 相似文献
118.
In the standard multi-good life-cycle consumption model (with intertemporal additive utility) the intratemporal relations between the marginal utilities of the different goods are deterministic. However, these deterministic identities will not usually be satisfied by the data. To avoid these deterministic relationships, we apply an approach which consists of introducing intratemporal uncertainty, and which is, in particular, interesting when additional nonnegativity constraints are present. We estimate some simple versions of the model with this so-called intratemporal uncertainty. The estimation results are, in general, in accordance with the theory, and most versions of the model are not rejected by Hansen and Singleton's misspecification test. 相似文献
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