Confidence Intervals for Current Status Data

Abstract.  The likelihood ratio statistic for testing pointwise hypotheses about the survival time distribution in the current status model can be inverted to yield confidence intervals (CIs). One advantage of this procedure is that CIs can be formed without estimating the unknown parameters that figure in the asymptotic distribution of the maximum likelihood estimator (MLE) of the distribution function. We discuss the likelihood ratio-based CIs for the distribution function and the quantile function and compare these intervals to several different intervals based on the MLE. The quantiles of the limiting distribution of the MLE are estimated using various methods including parametric fitting, kernel smoothing and subsampling techniques. Comparisons are carried out both for simulated data and on a data set involving time to immunization against rubella. The comparisons indicate that the likelihood ratio-based intervals are preferable from several perspectives.     

从学生的视角看农村教师的专业发展

教师专业化成长已是当今世界教师教育的主潮流,是各国教育共同关注的焦点问题之一。在调查研究的基础上,从学生的视角对农村教师的专业发展现状进行分析,就促进农村中小学教师专业成长的内容和策略进行理论探讨,是农村教育发展研究的一个课题。     

Semiparametric linear transformation models for current status data

Current status data arise when the death of every subject in a study cannot be determined precisely, but is known only to have occurred before or after a random monitoring time. The authors discuss the analysis of such data under semiparametric linear transformation models for which they propose a general inference procedure based on estimating functions. They determine the properties of the estimates they propose for the regression parameters of the model and illustrate their technique using tumorigenicity data.     

Dimensions of occupational inequality and Duncan's socioeconomic index

Using the original 1962 Blau and Duncan data for white males, I compare relative amounts of inequality in the distributions of occupational prestige, earnings, autonomy, and job skills. Also assessed are the degree of status rigidity (or intercorrelations) among these four dimensions of occupational inequality and the simultaneous relations among these four dimensions in a father-to-son occupational mobility model. These findings are compared to those obtained with Duncan's socioeconomic index to determine whether additional information can be obtained when using independent measures representing the multiple dimensions of occupational inequality versus using the SEI alone. Only minor discrepancies are found, and these relate to autonomy and earnings.An earlier version of this paper was presented at the 1985 Pacific Sociological Association meetings.     

基于“学习领导”理念的幼教名师工作室建设现状与对策

：强调以学习为核心的学习领导为理解与支持幼儿园教师学习与专业发展提供了一种全新的、系统的视角。在学习领导 理念下,幼教名师工作室应积极构建发展愿景;坚持持续对话,产生共识行动;引导建立安全、鼓励尝试的氛围;发挥行政力量 构建和完善幼教名师工作室运行机制。     

珠江三角洲文化形态论纲

珠江三角洲文化形态的性质是务实求利;其特征是商业俗文化;其结构由岭南文化、中原文化、港澳文化和西方文化四因素构成;其地位是有中国特色的社会主义新文化的“曙光”,是中华民族大一统文化的“中介”。     

从《中国大学评价》看长江大学的发展现状

现行的大学评价指标体系和排名方式,需要不断改进和完善;但这种以定量为主的评价方法,与传统的单纯定性评价的方式相比,具有直观清晰、数据客观的特点,说服力更强。分析《中国大学评价》对长江大学的排名,可为长江大学开展战略管理和年度发展评价提供一种新的视角。     

安徽省高校高水平运动队的现状与对策研究

安徽省高校高水平运动队经过近二十年的发展,取得了一定的成绩,但是距离高水平运动队的总体目标还有很大的差距,目前,我省高校试办高水平运动队依然处于探索阶段。文章通过对安徽省高校高水平运动队现状的调查与分析,探寻影响安徽省高校高水平运动队成绩的内在原因,并提出了相应的发展对策。     

厦门油画产业现状分析与发展策略

油画产业在厦门的文化产业中占有很重要的地位,要加快发展厦门的油画产业必须按照市场规律和艺术规律办事。通过对厦门油画产业的调查研究,了解它的发展过程及目前的状况;通过对油画产业的画师状况、经营模式、题材内容、造型特征的研究,认识厦门油画产业的行业特性,探寻进一步发展厦门油画产业的有效措施。     

体外胚胎的处分问题研究

体外受精-胚胎移植技术产生的体外胚胎是“物”,虽然具有发展成人的潜能,但其无法取得“人”一样的权利主体地位。体外胚胎不同于一般的物,法律应予以特殊保护。中国现有法律禁止胚胎买卖,对其他处分亦应予以适当限制。从尊重胚胎与人的生育权角度看,体外胚胎应允许被继承。离异夫妻对体外胚胎处分产生分歧时,应优先考虑不愿意生养孩子一方的利益,不得将体外胚胎孕育成人。夫妻一方死亡时,另一方得在法律许可范围内处分体外胚胎。体外胚胎无人继承时,应由负责保管的医疗机构处分该胚胎。