Cumulants of random sum distributions

Consider a random variable S being the sum of a number N of independent and identically distributed random variables X_j (j = 1, 2, ...) where the number N is itself a non-negative integer-valued random variable independent of the X_j An explicit expression of the r-th cumulant of S is given in terms of the cumulants of N and X_j, Asymptotic properties of the distribution of S are also discussed.     

性观念:70后和80后的比较——基于CGSS2005数据的分析

当前中国社会有关70后和80后之间的各种争论层出不穷,主要集中在性观念等道德观的层面,例如,许多人认为80后在性观念上面比70后更为开放,但是缺乏严谨的数据论证。因此,本文使用CGSS(中国综合社会调查)2005年的数据对此进行了分析,发现70后、80后这种基于年龄的代际概念并没有统计上的意义,即在控制相关变量后,这两个年龄阶段群体的性观念开放程度并不存在显著的差异。     

Predicting Future Commitment to Care for Frail Parents Among Employed Caregivers

A study of 133 full time employees with parent care responsibilities investigated various factors that could reduce this group's future caregiving commitment to aging parents. Study factors included: caregiver attributes, level of caregiving involvement, job stress, tensions between the caregiver and the dependent parent, caregiver's level of physical and mental strain, and limited support from family and friends. The relationship between the caregiver and the parent was the best predictor of sustained commitment to caregiving. One aspect of the employees' work experience made a small, but important contribution to respondents' future care plans. Those employees who frequently adjusted their work schedule and routine to accommodate parent care demands were less likely to sustain their caregiving commitment. Reasons for these findings are explored and implications for social policy and clinical practice are discussed.     

Exponentiality test based on Renyi distance between equilibrium distributions

ABSTRACT

On the basis of Csiszar's φ-divergence discrimination information, we propose a measure of discrepancy between equilibriums associated with two distributions. Proving that a distribution can be characterized by associated equilibrium distribution, a Renyi distance of the equilibrium distributions is constructed that made us to propose an EDF-based goodness-of-fit test for exponential distribution. For comparing the performance of the proposed test, some well-known EDF-based tests and some entropy-based tests are considered. Based on the simulation results, the proposed test has better powers than those of competing entropy-based tests for the alternatives with decreasing hazard rate function. The use of the proposed test is evaluated in an illustrative example.     

“90后”大学生入学教育新模式探索

高校应针对"90后"大学生的特点及独特的个性,探索新的教育途径和方法。     

The Making of COBRS 2.0

Abstract

Recently introduced advances in microcomputer technology offer opportunities for improving child welfare agencies' access to powerful case assessment and program evaluation tools. This paper discusses the process of fitting a child behavior outcome measurement system to a menu driven microcomputer program. Traditional strategies for measuring outcome effectiveness, managerial priorities and operational constraints are examined in terms of their bearing on the introduction of new microcomputer technology. The developmental process is traced to show how these factors influenced the addition of a number of user options to the basic program to enhance its adaptability to specific agency needs. Initial user feedback indicated general satisfaction with the basic program and the applicability of its output, little or no experimentation, as yet, in adapting the system, and, a minor need to adjust the sequencing of operator activities to better fit the realities of agency work rhythms.     

Locally best invariant test for outliers in a gamma type distribution

It is shown that the locally best invariant test for the existence of outliers for scale parameters of the gamma distribution is given by Bartholomew's test for exponentiality which is the ratio of the sum of squares of the data to the square of the sample mean. The optimality robustness, including null and nonnull robustness of the test is shown. A small simulation study to compare the power among the other eight competitive tests for testing exponentiality is performed. It is seen that the locally best invariant test is not always best but is reasonably good. It is slightly better than Cochran's test and suffers less from the limiting masking effect.     

传承与裂变:马克思主义理论学习的拐点--以延安学习运动为中心的考察

延安学习运动建立了一套较为完整的学习内容体系,创建了行之有效的学习方法,建构了科学有效的学习机制,不仅提高了延安时期的革命干部之学习水平与能力,并为革命与战争取得胜利提供重要的智力支持,而且为今天的学习型政党建设创建可行的有益模式,因此,延安学习运动是中国共产党不断开展自身建设的重要拐点,具有重要的开拓与启迪之功效.     

毛泽东社会主义发展观述评

建国后毛泽东对我国采取什么样的社会主义发展观进行了长期不懈的探索和大量的研究论证,突出表现在对发展目标、发展模式、发展阶段、发展速度、发展动力六个方面的探索和论证。探索和论证期间虽然经历了许多挫折甚至是错误,但这些探索对我国的社会主义建设起到巨大的指导作用和实际意义,吾试图对此进行细致的梳理和辩证的述评,以其为当今我国努力践行科学发展观提供一个必要的历史依据。     

Books Received

No abstract available for this article.