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71.
葛春晓 《吉林工程技术师范学院学报》2010,26(6)
近些年,大学生行为缺失现象日益突出,本文对当前大学生行为缺失现象加以分析,对当代大学生存在的各种行为缺失现象进行归纳,找出这些现象产生的根源,并为防止这些现象的发生提出相应对策。 相似文献
72.
Abstract The development of unit root tests continues unabated, with many recent contributions using techniques such as generalized least squares (GLS) detrending and recursive detrending to improve the power of the test. In this article, the relation between the seemingly disparate tests is demonstrated by algebraically nesting all of them as ratios of quadratic forms in normal variables. By doing so, and using the exact sampling distribution of the ratio, it is straightforward to compute, examine, and compare the test' critical values and power functions. It is shown that use of GLS detrending parameters other than those recommended in the literature can lead to substantial power improvements. The open and important question regarding the nature of the first observation is addressed. Tests with high power are proposed irrespective of the distribution of the initial observation, which should be of great use in practical applications. 相似文献
73.
The performance of step-wise group screening In terms of the expected number of runs and the expected number of incorrect decisions, Is considered. A method for obtaining optimal step-wise designs Is presented, for the cases in which the direction of each defective factor is assumed to be known a-priori and the observations are subject to error. 相似文献
74.
Nicholas T. Longford 《Journal of applied statistics》2009,36(11):1259-1265
This article is concerned with the analysis of a random sample from a binomial distribution when all the outcomes are zero (or unity). We discuss how elicitation of the prior can be reduced to asking the expert whether (and which of) the so-called borderline or equilibrium priors are plausible. 相似文献
75.
Expected Utility Consistent Extensions of Preferences 总被引:1,自引:1,他引:0
We consider the problem of extending a (complete) order over a set to its power set. The extension axioms we consider generate
orderings over sets according to their expected utilities induced by some assignment of utilities over alternatives and probability
distributions over sets. The model we propose gives a general and unified exposition of expected utility consistent extensions
whilst it allows to emphasize various subtleties, the effects of which seem to be underestimated – particularly in the literature
on strategy-proof social choice correspondences.
相似文献
76.
Manimay Sengupta 《Journal of Economic Inequality》2009,7(3):273-294
We propose a framework in which the welfare bases of various unemployment measures available in the literature can be analyzed
and a decomposition of these measures can be made into aggregate unemployment and the concentration of its distribution. A
set of axioms for an unemployment measure is then introduced, which relate to the sensitivity of an unemployment measure to
the inequality in the distribution of the unemployment. An unemployment measure is derived on the basis of these axioms that
captures the distributional considerations in the measurement of unemployment.
相似文献
77.
期待可能性理论有坚实的哲学和法理基础,在关注人性、体现刑法谦抑性和发挥刑罚功能等方面具有强大的理论吸引力,但是也存在对罪刑法定原则可能构成潜在危害,对法官素质具有较高要求,对完善的配套法律制度较为依赖等问题。因此,引进该理论应当慎重,应当在明确该理论在中国犯罪构成中的地位、在中国刑法和刑法理论中的功能,并设置相应的程序保障后再予以适用。 相似文献
78.
For a general class of continuous ( and marginally symmetric ) inultivariate distributions, based on suitable M-statistics ( involving bounded but possibly discontinuous score generating functions), shrinkage estimators of location are considered. These estimators are based on the James-Stein type rule and incorporates the idea of preliminary test estimation too. The main emphasis is laid on the study of asymptotic tdistributional ) risk properties of these est-innators, and asymptotic tin-) adraissibility results are also studied under fairly general regularity conditions. 相似文献
79.
Ravindra Khattree 《统计学通讯:理论与方法》2013,42(1):263-274
In this paper, estimates QP dispersion matrix and its functions are compared based on generalized Pitman nearness criterion, Various Iosa functions are considered for the purpose. Locally superior estimates are defined and obtained. Comparison of these estimates are made with other standard ones. It is snown that within certain classes, defined in the paper, these are the best estimatcrs ia the generalized Fitman nearness sense 相似文献
80.
A system of predictors for estimating a finite population variance is defined and shown to be asymptotically design-unbiased (ADU) and asymptotically design-consistent (ADC) under probability sampling. An asymptotic mean squared error (MSE) of a generalized regression-type predictor, generated from the system, is obtained. The suggested predictor attains the minimum expected variance of any design-unbiased estimator when the superpopulation model is correct. The generalized regression-type predictor and the predictor suggested by Mukhopadhyay (1990) are compared. 相似文献