On hypothesis tests for disk-type intensities of spatial poisson processes

We consider the problem of testing whether realizations of a spatial Poisson process come from a circular intensity model or from an elliptical intensity model. We describe the behavior of the Generalized Likelihood Ratio and Wald tests, in the asymptotics of large samples. The power functions are studied under local alternatives and results of numerical simulations comparing them to the Neyman–Pearson envelope are presented.     

Testing equality of two intercepts for the parallel regression model with non sample prior information

This paper proposes tests for equality of intercepts of two simple regression models when non sample prior information is available on the equality of two slopes. For three different scenarios on the values of the slope, namely (i) unknown (unspecified), (ii) known (specified), and (iii) suspected, we derive the unrestricted test (UT), restricted test (RT), and pre-test test (PTT) for testing the equality of intercepts. The test statistics, their sampling distributions, and power functions of the tests are obtained. Comparison of power function and size of the tests reveals that the PTT has a reasonable dominance over the UT and RT.     

A nonparametric procedure for testing partially ranked data

In consumer preference studies, it is common to seek a complete ranking of a variety of, say N, alternatives or treatments. Unfortunately, as N increases, it becomes progressively more confusing and undesirable for respondents to rank all N alternatives simultaneously. Moreover, the investigators may only be interested in consumers’ top few choices. Therefore, it is desirable to accommodate the setting where each survey respondent ranks only her/his most preferred k (k?N) alternatives. In this paper, we propose a simple procedure to test the independence of N alternatives and the top-k ranks, such that the value of k can be predetermined before securing a set of partially ranked data or be at the discretion of the investigator in the presence of complete ranking data. The asymptotic distribution of the proposed test under root-n local alternatives is established. We demonstrate our procedure with two real data sets.     

我国公务员行政能力测试的现状与改进方向

公务员行政能力是政府能力的微观基础和具体体现,是公务员素质结构的重要方面。界定公务员行政能力的理论内涵,分析公务员行政能力测试的现况,探索构建测试公务员行政能力指标体系和方法体系,并运用于公务员管理的各个环节,对于促进公务员素质提高和能力开发,是非常有益的,也是很有必要的。     

基于布尔差分的数字逻辑电路故障诊断

讨论了数字系统的故障分析的内涵,阐述了故障的可测性定理,并以组合逻辑电路为例,介绍如何利用布尔差分法求解其全部测试码,给出了多重故障测试码的公式,说明了布尔差分法数字系统故障诊断的局限性。     

GRE计算机适应性测试管窥──程度教学论在测试领域的延伸

本文从程序教学理论研介入手，分析考察GRE适应性测试的由来、程序模型及其主要特点，并对它的利弊得失作简要评述。     

沪、深两市长期均衡关系的实证研究——来自综合指数和成分指数的比较分析

文章运用计量经济学中的协整理论,对沪、深两市综合指数间及成分指数间的长期均衡关系进行了比较分析.结果表明上证综指与深证综指之间不存在长期均衡关系,上证成指与深证成指之间存在长期均衡关系.     

THE OPTIMAL TEST FOR SELECTING THE GREATER OF TWO BINOMIAL PROBABILITIES

The efficiency of a sequential test is related to the “importance” of the trials within the test. This relationship is used to find the optimal test for selecting the greater of two binomial probabilities, p_α and p_b, namely, the stopping rule is “gambler's ruin” and the optimal discipline when p_α+p_b≤ 1 (≥ 1) is play-the-winner (loser), i.e. an α-trial which results in a success is followed by an α-trial (b-trial) whereas an α-trial which results in a failure is followed by α b-trid (α-trial) and correspondingly for b-trials.     

美国的标准化考试对完善中国考试制度的启示

标准化考试从一个侧面反映了美国教育的现状。保持世界一流教育的观念已深深扎根于美国人的潜意识之中。因此不断改进教育质量,提高教育水平,成为美国历届政府孜孜以求的目标,而标准化考试则被认为是达到这一目标的手段。在美国这个多元文化并存、强调个性自由发展的国度里,各界人士对标准化考试众说纷纭。同样,中国教育界对标准化考试也是各执一说。在这种情况下,标准化考试在美国的得失对中国完善考试制度提供了借鉴。     

大学英语Ⅰ试题库的建设与实施

试题库的建设与管理是大学英语教学改革的重要内容,在此基础上,我们进行了大学英语Ⅰ试题库的建设与实施检验。结果表明,我们已经在改革考试制度,实现"教考分离"上迈出了全面开展题库建设的第一步,今后将深入进行题库的标准化建设和管理。