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111.
112.
《Adoption quarterly》2013,16(4):23-43
ABSTRACTThe number of domestic adoptions has remained relatively constant over the past 15 years, varying between 121,000 and 127,000, but placements have increasingly been completed by public agencies. Adoption of foreign-born children in the United States has nearly tripled in the past 20 years. Despite the increased national interest in adoption in the past decade and the efforts of many dedicated individuals and agencies, it is still difficult to determine the total number of adoptions in the United States. No one agency is charged with compiling adoption information on all adoptions in the United States, and the agencies that do have access to some types of adoption information have no mandate or incentive to compile that information so that it could be integrated with other sources of adoption information. 相似文献
113.
Henryk Zähle 《Statistics》2013,47(5):951-964
Both Marcinkiewicz–Zygmund strong laws of large numbers (MZ-SLLNs) and ordinary strong laws of large numbers (SLLNs) for plug-in estimators of general statistical functionals are derived. It is used that if a statistical functional is ‘sufficiently regular’, then an (MZ-)SLLN for the estimator of the unknown distribution function yields an (MZ-)SLLN for the corresponding plug-in estimator. It is in particular shown that many L-, V- and risk functionals are ‘sufficiently regular’ and that known results on the strong convergence of the empirical process of α-mixing random variables can be improved. The presented approach does not only cover some known results but also provides some new strong laws for plug-in estimators of particular statistical functionals. 相似文献
114.
基于公理设计理论的仿真软件评价方法研究 总被引:1,自引:0,他引:1
针对仿真软件评价优选问题,提出一种基于公理设计理论的仿真软件评价方法。以公理设计理论为指导建立仿真软件评价模型,通过信息公理以信息量大小为测度来度量仿真软件产品的优劣。考虑到备选方案评价指标信息具有不完全性和模糊性特征,采用信息公理中的经典信息量计算方法存在局限性,对信息公理中的信息量计算方法进行拓展,提出基于单值点、区间数相离度、满意度和模糊信息的信息量计算方法。结合经典的和拓展的信息量计算方法,给出仿真软件评价流程。以某生产制造企业选择仿真软件产品为例,说明所提出方法的可行性和有效性,实验结果也揭示了在仿真软件商业领域竞争中软件质量起到至关重要的作用。 相似文献
115.
Charles F. Dunkl 《统计学通讯:理论与方法》2013,42(19):1915-1920
Approximations for the mean and variance for the absorption distribution are found by means of a transformation of ordinary binomial to Gaussian or q-binomial coefficients. 相似文献
116.
117.
Ch. A. Charalambides 《统计学通讯:理论与方法》2013,42(7):1305-1317
Consider a sequence of independent and identically distributed random variables with an absolutely continuous distribution function. The probability functions of the numbers Kn,r and Nn,r of r-records up to time n of the first and second type, respectively, are obtained in terms of the non central and central signless Stirling numbers of the first kind. Also, the binomial moments of Kn,r and Nn,r are expressed in terms of the non central signless Stirling numbers of the first kind. The probability functions of the times Lk,r and Tk,r of the kth r-record of the first and second type, respectively, are deduced from those of Kn,r and Nn,r. A simple expression for the binomial moments of Tk,r is derived. Finally, the probability functions and binomial moments of the kth inter-r-record times Uk,r = Lk,r ? Lk?1,r and Wk,r = Tk,r ? Tk?1,r are obtained as sums of finite number of terms. 相似文献
118.
ABSTRACTIn this paper, under some weaker conditions, we give three laws of large numbers (LLNs) under sublinear expectations (capacities), which extend the LLN under sublinear expectations in Peng (2008b) and the strong LLN for capacities in Chen (2010). It turns out that these theorems are natural extensions of the classical strong (weak) LLNs to the case where probability measures are no longer additive. 相似文献
119.
ABSTRACTIn this article, we study a class of small deviation theorems for the random variables associated with mth-order asymptotic circular Markov chains. First, the definition of mth-order asymptotic circular Markov chain is introduced, then by applying the known results of the limit theorem for mth-order non homogeneous Markov chain, the small deviation theorem on the frequencies of occurrence of states for mth-order asymptotic circular Markov chains is established. Next, the strong law of large numbers and asymptotic equipartition property for this Markov chains are obtained. Finally, some results of mth-order nonhomogeneous Markov chains are given. 相似文献
120.