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991.
《统计学通讯:理论与方法》2012,41(2):500-512
AbstractThis paper deals with the statistical studies of the normal tempered stable model defined by Barndorff-Nielsen and Shephard. It represents the natural extension of the normal inverse Gaussian one introduced by Barndorff-Nielsen. We basically use the Monte-Carlo’s approximation in order to simulate this distribution. We introduce a linear regression model with normal tempered stable error. We apply this model for the analyzing of the daily logarithm returns data on CAC40 index. The parameters estimation results show that this model better deals with long tailed distribution which is the case for the CAC40 logarithm returns. 相似文献
992.
993.
从理论和实践两个维度对师范院校思想政治教育的内涵、效能、主体特性、教育现状、问题进行了阐释和分析。结合师范院校大学生的群体特征和基础教育改革的要求,从"两课"改革、机制完善和心理健康教育三个层面对师范院校思想政治教育工作提出了相应的对策。 相似文献
994.
The power of Student's t-test is partitioned to determine* the proportion of time the sample standard deviation is too small or the mean is misestimated given that rejection of the hypothesis under test has occurred 相似文献
995.
《统计学通讯:模拟与计算》2013,42(4):861-887
Abstract We discuss the accuracy of the computation and present a fortran program to compute the cumulative distribution function (CDF) for the analysis of means (ANOM). 相似文献
996.
S. G. Lehrke 《统计学通讯:理论与方法》2013,42(4):738-752
Computer modeling is having a profound effect on scientific research, replacing direct physical experimentation by computer simulation of complex models. In this research, the computer output, X(t), is assumed to be a multivariate, three-dimensional (time) Ornstein-Uhlenbeck (O–U) process with parametric covariance function. It is shown that the ML estimates of the parameters are strongly consistent and asymptotically normal when the observations are taken from a complete lattice, not necessarily equally spaced. 相似文献
997.
Roger L. Berger 《统计学通讯:理论与方法》2013,42(20):2025-2037
In this paper subset selection procedures for selecting all treatment populations with means larger than a control population are proposed. The treatments and control are assumed to have a multivariate normal distribution. Various covariance structures are considered. All of the proposed procedures are easily implemented using existing tables of the multivariate normal and multivariate t distributions. Some other procedures which have been proposed require extensive and unavailable tables for their implementation 相似文献
998.
A Shewhart procedure is used to simultaneously control the standard deviations of quality characteristics assumed to have a bivariate normal distribution. Following Krishnaiah et al (1963), we use the bivariate chi-square distribution to determine probabilities of out-of-control signals and thus the respective average run lengths (ARLs). Results from an example indicate that for both one-sided and two-sided cases, signals occur only slightly more quickly for changes in the process standard deviations for uncorrected variables than for correlated variables. 相似文献
999.
Ching Kwan Lee 《Globalizations》2019,16(2):137-154
ABSTRACTThis essay offers a stylized account of the trajectory of precarious labour in China over the past seven decades and identifies the various contested terrains constitutive of its politics. I define ‘precarity’ not as a thing-like phenomenon with fixed attributes but as relational struggles over the recognition, regulation, and reproduction of labour. For each of the three periods of contemporary Chinese development, i.e. the Mao era of state socialism (1949–1979), the high-growth market reform era (1980–2010), and the current era of slow growth and overcapacity (since around 2010), I analyse the political economic drivers of precarity – from state domination to class exploitation and then to exclusion, indebtedness and dispossession – and workers’ changing capacity and interest to contest it. 相似文献
1000.
The Paper considers estimation of the p(> 3)-variate normal mean when the variance-covariance matrix is diagonal with unknown diagonal elements. A class of James-Stein estimators is developed, and is compared with the sample mean under an empirical minimax stopping rule. Asymptotic risk expansions are provided for both the sequential sample mean and the sequential James-Stein estimators. It is shown that the James-Stein estimators dominate the sample mean in a certain asymptotic sense. 相似文献