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1.
Eshien Chong Freddy Huet Stéphane Saussier Faye Steiner 《Review of Industrial Organization》2006,29(1-2):149-169
We use an original database of 5000 French local public authorities to explore the impact of organizational choice and performance as measured by consumer prices. In quantifying the impact of the choice of public-private partnerships (PPPs) on performance, we consider the related issue of the determinants of organizational choice. We estimate a switching regressions model to account for the endogeneity of organizational choice, and find that in our sample, (i) the choice by local public authorities to engage in a PPP is not random, and (ii) conditional on the choice of a PPP, consumer prices are significantly higher on average. 相似文献
2.
Freddy Cepeda-López Carlos León Hernán Rincón-Castro 《The journal of international trade & economic development》2019,28(4):452-485
This paper employs network analysis to study world trade from 1995 to 2014. We focus on the main connective features of the world trade network (WTN) and their dynamics. Results suggest that countries’ efforts to attain the benefits of trade have resulted in an intertwined network that is increasingly dense, reciprocal, and clustered. However, these features do not correspond to a linear aggregation of the characteristics of its constituents (trade sectors). Trade linkages are distributed homogeneously among countries, but their intensity (i.e. their value) is highly concentrated in a small set of countries. The main connective features of the WTN were not affected by the 2007–2008 international financial crisis. However, we find that the crisis marks a turning point in the evolution of the WTN from a two-group (led by the US and Germany) to a three-group (led by the US, Germany, and China) hierarchical structure. 相似文献
3.
我很高兴能来到著名的同济大学,和在座各位共同讨论二十一世纪的城市发展。我认为对于人文科学和社会学研究者,有三个问题具有根本性的意义:一、二十一世纪城市的发展将出现什么样的趋势和特点;二、我们应当如何监控城市未来的发展;三、如何将人文科学引入到城市未来的研究中去。社会学者的义务:思考城市的未来在这个世纪我们已经看到了一个现象——全球性的城市化。一些以农业为主的国家将经历一个重要的城市化过程,比如印度、巴西、还有中国。尽管中国的城市化进程正在进行之中,但我认为这将是人类历史上规模最大、影响最深的社会变动。中… 相似文献
4.
We relate the theory of passport options with general principles from martingale theory as well as with the theory of Bessel processcs. The calculation of the price of a passport option leads to an equality between two norms on continuous martingales. We also solve the discrete time case for passport options. 相似文献
5.
We show that when a real-valued risk measure is defined on a solid, rearrangement invariant space of random variables, then necessarily it satisfies a weak compactness, also called continuity from below, property, and the space necessarily consists of integrable random variables. As a result we see that a risk measure defined for, say, Cauchy-distributed random variable, must take infinite values for some of the random variables. 相似文献
6.
This paper uses the existence of secondary markets for debt instruments with default risk (e.g. corporate bonds) to define default insurance along the lines of financial economics. It examines whether, in the case of several risk-neutral measures, characteristics of default can be uniquely determined by the prices of contracts involving default-prone securities. 相似文献
7.
Abstract. This paper studies the effects of crises on human capital formation. Theoretically, a crisis undermines total factor productivity, which reduces the return to working and to accumulating physical capital. If the crisis is temporary, young agents will study now and work later. Human capital rises. To test our model we rely on inflation crises as our main empirical proxy. Using GMM panel procedures, our analysis for 86 countries in 1970–2000 confirms the positive effects of crises on human capital. Our main findings survive several robustness tests. JEL classification: E31, D90 相似文献
8.
Gilles Angelsberg Freddy Delbaen Ivo Kaelin Michael Kupper Joachim Näf 《Finance and Stochastics》2011,15(2):343-363
We consider the class of law invariant convex risk measures with robust representation rh,p(X)=supfò01 [AV@Rs(X)f(s)-fp(s)h(s)] ds\rho_{h,p}(X)=\sup_{f}\int_{0}^{1} [AV@R_{s}(X)f(s)-f^{p}(s)h(s)]\,ds, where 1≤p<∞ and h is a positive and strictly decreasing function. The supremum is taken over the set of all Radon–Nikodym derivatives corresponding
to the set of all probability measures on (0,1] which are absolutely continuous with respect to Lebesgue measure. We provide
necessary and sufficient conditions for the position X such that ρ
h,p
(X) is real-valued and the supremum is attained. Using variational methods, an explicit formula for the maximizer is given.
We exhibit two examples of such risk measures and compare them to the average value at risk. 相似文献
9.
Collusion seems to be a pervasive problem when regional monopoly rights are auctioned to private firms. This leads us to study whether firms may collude if the regulator uses yardstick competition to simulate competitive forces, and how collusion is affected when both schemes are used. Using an infinitely repeated game framework, we find that collusion is sustainable when firms are sufficiently patient under yardstick competition. An additional franchise bidding mechanism can even help firms sustain collusion when they are impatient. When temporary monopoly rights are assigned for sufficiently long periods of time, collusion may not be sustainable even when firms are patient. 相似文献
10.