The inverse binomial distribution as a statistical model

A particular case of Jain and Consul's (1971) generalized neg-ative binomial distribution is studied. The name inverse binomial is suggested because of its close relation with the inverse Gaussian distribution. We develop statistical properties including conditional inference of a parameter. An application using real data is given.     

Cure rate survival models with missing covariates: a simulation study

In this paper we study the cure rate survival model involving a competitive risk structure with missing categorical covariates. A parametric distribution that can be written as a sequence of one-dimensional conditional distributions is specified for the missing covariates. We consider the missing data at random situation so that the missing covariates may depend only on the observed ones. Parameter estimates are obtained by using the EM algorithm via the method of weights. Extensive simulation studies are conducted and reported to compare estimates efficiency with and without missing data. As expected, the estimation approach taking into consideration the missing covariates presents much better efficiency in terms of mean square errors than the complete case situation. Effects of increasing cured fraction and censored observations are also reported. We demonstrate the proposed methodology with two real data sets. One involved the length of time to obtain a BS degree in Statistics, and another about the time to breast cancer recurrence.     

Maximum of the weighted Kaplan–Meier tests for the two-sample censored data

In this paper, some versatile test procedures are considered, which are useful for the case where the association of survival functions is unclear. These procedures are based on a maximum of a class of the weighted Kaplan–Meier statistics. The weight functions used in the procedures account for both the censored and non-censored data points. Numerical simulations with these weight functions show that, under various levels of censoring, the proposed procedures perform well across a wide range of alternative configurations. Implementation of the proposed procedures is illustrated in a real data example.     

野外生存训练在贵州高校体育教育中的推广

本研究运用文献资料、访谈法等研究方法，对野外生存训练在贵州高校体育教育的必要性进行分析和阐述，然后针对贵州的实际情况，提出了如何在贵州高校体育教育中推广野外生存训练的策略。     

You Don't Always Have to Pick Up Your Mess Right Away: How Being Messy Can Be Really Neat!

SUMMARY

The purpose of this paper is to illustrate a first year student's field placement experience at a group home for mentally ill adolescent boys. Upon discovering she has to “un-learn” past “learned” group work skills, she eagerly anticipates future opportunities to utilize “re-learned” theory acquired from major method course readings and lectures. Once in the field, she confronts the difficulties that this presents. The following is an account of the fears and frustrations as well as the joys and rewards one student encountered while attempting to apply and practice group work methodology in the field.     

On the mean squared error of nonparametric quantile estimators under random right-censorship

For randomly right-censored data, new asymptotic expressions for the mean squared errors of the product-limit quantile estimator and a kernel-type quantile estimator are presented in this paper. From these results a comparison of the two quantile estimators with respect to their mean squared errors is given.     

“生存心态”理论下的大学生心理健康教育探究

将布迪厄的"生存心态"理论与心理健康教育相结合,论述当前大学生的心理健康状况,分析大学生心理健康存在的问题,探索建立大学生心理健康的教育规范,最终把科学的心理健康教育模式运用于高校教育当中,以切实提高心理健康教育的实效性,创新心理健康教育的研究方法和教育管理的思维方式。     

A scale-location adjustment for proportional hazards deviance residuals

We show that deviance residuals derived using the proportional hazards assumption (including Cox regression) are not asymptotically standard normal, but that a scale-location adjustment makes them nearly standard normal, even for moderate sample sizes. This adjustment should aid in outlier detection, as it allows a more exact assessment of when a deviance residual is unusually large.     

Spatial Pattern and Determinants of Age at Marriage in Nigeria Using a Geo-Additive Survival Model

Age at first marriage, after controlling for socio-economic and demographic variables, varies across regions and districts. A geo-additive hazard model allows for measuring spatial effects. The nonlinear and baseline effects are modeled by Bayesian penalized splines; spatial components are treated as correlated random effects following a Markov random field. Application is based on data from 1999, 2003, and 2008 Nigeria Demographic and Health Surveys. Age at first marriage is positively associated with education and urbanization and depends on religion. It presents a north-south divide.     

经济发达地区大龄女童生存的现状及问题——以浙江省为例

浙江省大龄女童在健康照料、人际关系、教育等方面的同男童的差异已不复存在,个别指标显示大龄女童的生存环境甚至优于同龄男童,但农村大龄女童生存依然面临严峻形势：奶制品和肉/鱼类的需求满足度低,缺少父母的监护而面临较高的生存风险,接受优质教育资源的机会较为稀缺,家庭学习条件差、期望学历层次低,遭受老师忽视和体罚的风险高。分析显示,大龄女童在健康照料方面不受＂代际＂因素的影响,而在教育、营养供给、体罚等方面有明显的＂代际＂印记。提高大龄女童生存品质需重点关注低教育程度家庭大龄女童的＂失学＂问题,留守＂大龄女童＂的健康和安全问题,以及农村大龄女童遭受父母的体罚问题。