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41.
改革开放以来中国迅速成为全球首要的反倾销目标国家,中国制定实施反倾销法具有遏制国外对华滥用反倾销措施的动机。文章利用负二项模型和泊松模型对1995—2008年20个国家(地区)对华反倾销调查数据进行计量分析,发现中国对进口产品实施反倾销以及主动利用WTO争端解决机制挑战他国对华反倾销行为并未对国外对华反倾销产生明显的遏制作用。要改变中国在全球反倾销博弈中的不利处境,一要积极推动WTO反倾销制度改革,防止进口国滥用反倾销措施;二要增强对外反倾销的针对性;三要提升主动利用WTO争端解决机制处理反倾销争议的能力。 相似文献
42.
Private provision of discrete public goods 总被引:1,自引:0,他引:1
We investigate private provision of discrete public goods under refund and cost-sharing. If it is commonly believed that individuals may be warm-glow altruists and the group-size is a Poisson random variable, then the equilibrium distribution of collected contributions is uniquely determined. If composition uncertainty is very small and the expected group-size sufficiently large, the distribution of contributions can be described by concentrating in a symmetric mixed-strategy equilibrium. As the expected group-size increases, the probability a randomly selected player contributes and the associated expected number of contributions converge to the corresponding ones in the symmetric mixed-strategy equilibrium of the game with no uncertainty. 相似文献
43.
Zbigniew Szkutnik 《Metrika》2000,52(1):1-26
Quasi-maximum likelihood histogram sieve estimators of the intensity function of an indirectly observed Poisson process are
studied. The setup differs from the standard one in that the exact form of the folding operator may not be known. Instead,
approximate knowledge on its discretized version is available. Conditions for strong L
2-consistency are given and admissible discretization rates are studied. In non-folding problems, the number of histogram bins
may essentially increase at the usual maximal rate while folding reduces the allowed discretization rates. It is shown that,
even in moderately ill-posed problems, the discretization effects may be critical for the strong L
2-convergence and that there is an essential need both for further regularization and for imposing stronger conditions on the
estimated function. Not surprisingly, the most restrictive factor is the low approximation power of piecewise constant functions.
A regularization method is proposed which suitably modifies the discrete approximation of the folding operator and ensures
the strong consistency. Since no penalty term is being introduced, the EM algorithm can be used in its factorized, efficient
form. Convergence rates are obtained in terms of the discrete problem.
Received: July 1999 相似文献
44.
45.
含跳跃过程单因子利率模型的估计——基于中国国债回购利率的实证分析 总被引:1,自引:0,他引:1
在CKLS模型的基础上,我们提出了一个加入跳跃过程的单因子利率期限结构模型。通过对我国国债回购利率的实证检验,发现加入跳跃过程后,模型不但能更好地拟合实际数据.而且揭示了利率均值回复和水平效应的部分原因,从而增强了模型的解释能力。 相似文献
46.
Francisco
Richter Bart Haegeman Rampal S. Etienne Ernst C. Wit 《Statistica Neerlandica》2020,74(3):261-274
Phylogenetic trees are types of networks that describe the temporal relationship between individuals, species, or other units that are subject to evolutionary diversification. Many phylogenetic trees are constructed from molecular data that is often only available for extant species, and hence they lack all or some of the branches that did not make it into the present. This feature makes inference on the diversification process challenging. For relatively simple diversification models, analytical or numerical methods to compute the likelihood exist, but these do not work for more realistic models in which the likelihood depends on properties of the missing lineages. In this article, we study a general class of species diversification models, and we provide an expectation-maximization framework in combination with a uniform sampling scheme to perform maximum likelihood estimation of the parameters of the diversification process. 相似文献
47.
《The Scandinavian journal of economics》2018,120(2):338-371
Using a rich Norwegian panel dataset that includes information about the type and number of patent applications, direct environmental regulations, and a large number of control variables, we analyze the effects of direct regulations on environmental patenting. We use inspection violation status as a measure of regulatory stringency, while controlling for risk class. Violation status captures the probability that a firm might be sanctioned for violating its emission permit. Controlling for risk class captures firm heterogeneity related to dirtiness and inspection frequency. We empirically identify strong and significant effects on innovations resulting from the implicit regulatory costs of direct regulations. 相似文献
48.
The distributions of the life lengths of a parallel and of a series system with a random number of components have been studied in reliability theory. In this paper we obtain the distributions of the i'th order statistics and the range, assuming the sample size to be random, with a generalized negative binomial, a generalized Poisson and a generalized logarithmic series distribution. The results of Raghunandanan and Patil (1972) follow immediately from our results. 相似文献
49.
Zbigniew Szkutnik 《Metrika》1996,43(1):1-16
Asymptotic normality and quick consistency of quasi-maximum likelihood estimators of parameters in a multivariate Poisson
process are proved. Possible application of the results obtained to the problem of unfolding histograms is briefly discussed. 相似文献
50.
This paper develops a new bivariate jump model to study jump dynamics in foreign exchange returns. The model extends a multivariate GARCH parameterization to include a bivariate correlated jump process. The conditional covariance matrix has the Baba, Engle, Kraft, and Kroner (1989) structure, while the bivariate jumps are governed by a Correlated Bivariate Poisson (CBP) function. Using daily data we find evidence of both independent currency specific jumps, as well as jumps common to both exchange rates of the Canadian dollar and Japanese Yen against the U.S. dollar. The paper concludes by investigating a time-varying structure for the arrival of jumps that relaxes the assumption of constant and bounded jump correlation imposed by the CBP function.I am indebted to two anonymous referees and the editor, Baldev Raj for helpful suggestions. I am also grateful for helpful comments from Adolf Buse, Ramazan Gencay, Rehim Kilic, John Maheu, Alex Maynard, Denis Pelletier, Denise Young, and seminar participants at the Tenth Annual Symposium of the Society for Nonlinear Dynamics and Econometrics (SNDE), Federal Reserve Bank of Atlanta 2002; the Midwest Econometrics Group (MEG) Meetings, Federal Reserve Bank of Kansas City 2001; Canadian Economics Association (CEA) Meetings, McGill University 2001. 相似文献