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排序方式: 共有537条查询结果,搜索用时 15 毫秒
21.
Zusammenfassung Ausgangspunkt bildet ein Produktionsmodell, das durch eine Kombination von zwischensektoraler Prozeßbeschreibung und allgemeinen sektoralen Produktionsfunktionen gewissen empirischen Befunden über input-output-Struktur und Substitutionseffekten theoretisch zu entsprechen versucht. Auf dieser Basis läßt sich eine Reihe von Problemen des optimalen Wachstums (welfaremaximierende Pfade, optimale Beschäftigungspfade, konsummaximierende Pfade) als klassische Variationsprobleme formulieren. Schließlich wurde ein allgemeiner Ausblick auf andere Interpretationen (steuerbare Prozesse) und diesen angemessene Lösungstechniken größerer Leistungsfähigkeit (Maximumprinzip von Pontrjagin) eröffnet.Mit 1 Textabbildung 相似文献
22.
In this paper bilateral models formalizing monthly growth of US imports and exports are employed to investigate the potential
of nonlinear relationships linking exchange rate uncertainty and trade growth. Parametric linear and nonlinear as well as
semiparametric time series models are evaluated in terms of fitting and ex ante forecasting. The overall impact of exchange
rate variations on trade growth is found to be weak. In periods of large exchange rate variations, trade growth forecasts
gain from conditioning on volatility. Empirical results support the view that the relationship of interest might be non-linear
and, moreover, lacks homogeneity across countries and imports vs. exports. JEL no. C14, C22, F31, F41 相似文献
23.
Helmut Reisen 《Empirica》1998,25(2):111-131
Both the Mexican crisis of 1994–95 and the Asian financial crisis of 1997–98 have been preceded by large current account deficits run by the affected economies. External deficits are often assumed to play an important role in the propagation of financial crises in emerging markets. Policymakers are faced with a new challenge: that of resisting or accepting the large current account deficits that may result from heavy private capital inflows. This paper aims at providing some guidance:First, the Lawson Doctrine – according to which current account deficits that result from a shift in private-sector behaviour should not be a public policy concern – has been discredited by recent currency crises in Latin America and Asia. Second, define the size of current account deficits that should be sustainable in the long run. Third, the intertemporal approach to the current account does not provide a reliable benchmark to define when deficits become excessive. Fourth, large external deficits should be resisted if unsustainable currency appreciation, excessive risk-taking in the banking system and a sharp private spending boom are seen to coincide. 相似文献
24.
High-quality science communication to the public depends to a large extent on the way research findings are translated into comprehensible language and common speech. In this communicative process, a reasonable evaluation of the trustworthiness of empirical findings, based on an adequate interpretation of statistical analyses, is absolutely crucial. This paper’s authors argue that the credibility of science is jeopardised by two compromising developments within science itself: on the one hand, an inflation of ostensible empirical evidence related to misuses and misinterpretations of the concept of statistical significance, and, on the other, a sensationalist overvaluation of the results of single studies instead of an adequate representation of the available body of evidence in a given scientific field. 相似文献
25.
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The aim of this note is to establish a criterion of absence of arbitrage opportunities under small transaction costs for a family of multi-asset models of financial markets. 相似文献
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29.
The theory of fuzzy sets is applied to the output decisions of a price-taking firm facing imprecise information about expected future prices. Accepting risk resulting from the randomness of prices, the manager is interested in expected profits only. Since the set of possible expected-price vectors is fuzzy, a suitable defuzzification strategy is defined in analogy to the pessimism-optimism index proposed by L. Hurwicz. It depends on the manager's willingness to accept surprises resulting from a deviation of the true expected prices from the values that guided output decisions. Despite a linear cost function, well specified solutions to the optimization problem are possible without resorting to capacity constraints. 相似文献
30.
Andreas?GrünbichlerEmail author Hanspeter?Wohlwend 《Financial Markets and Portfolio Management》2005,19(4):361-380
This article analyses the valuation of 192 structured products without a capital guarantee. In contrast to similar studies,
this investigation takes in both the primary and the secondary market. Its central element is a comparison of the implied
volatilities of the options contained in the structured products with those of comparable EUREX options. Generally speaking,
the results may well come as a surprise both concerning the scale of the phenomenon detected and its significance. Taken as
a whole, the results provide grounds for assuming that certain inefficiencies exist on the Swiss market for structured products
and that lead managers manage to exploit their quasi-monopolistic position in a rational manner.
JEL Classification G13 相似文献