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31.
The semi‐Markov process often provides a better framework than the classical Markov process for the analysis of events with multiple states. The purpose of this paper is twofold. First, we show that in the presence of right censoring, when the right end‐point of the support of the censoring time is strictly less than the right end‐point of the support of the semi‐Markov kernel, the transition probability of the semi‐Markov process is nonidentifiable, and the estimators proposed in the literature are inconsistent in general. We derive the set of all attainable values for the transition probability based on the censored data, and we propose a nonparametric inference procedure for the transition probability using this set. Second, the conventional approach to constructing confidence bands is not applicable for the semi‐Markov kernel and the sojourn time distribution. We propose new perturbation resampling methods to construct these confidence bands. Different weights and transformations are explored in the construction. We use simulation to examine our proposals and illustrate them with hospitalization data from a recent cancer survivor study. The Canadian Journal of Statistics 41: 237–256; 2013 © 2013 Statistical Society of Canada 相似文献
32.
Joan B Garfield 《统计学通讯:理论与方法》2013,42(11):2863-2873
This paper describes the use of different assessment methods to evaluate Chance courses in the NSF-funded Chance project. Multiple methods were used to measure changes in students' attitudes and beliefs about statistics, reasoning about probability and statistics, and ability to critique a newspaper article that reports statistical results. Samples of assessment materials and scoring rubrics used in the evaluation are included. 相似文献
33.
Abstract In 1980, thirty‐five years after the end of World War II, the long‐term impact of war‐trauma on individuals’ lives led to concern about Post‐Traumatic Stress Disorder. While the focus here is not on “disorders,” it is on interactive patterns of “defensive” caretaking behaviors which contribute to intergenerational transmission of anxiety, silence and losses related to the Holocaust. In this long‐term group, defensive caretaking patterns are conceptualized as second‐generation behaviors which focus on parental needs thereby avoiding addressing second‐generation vulnerabilities. Relevant concepts of Sullivan, Winnicott, Bion and Fairbairn are applied. In an innovative trauma group design, defensive caretaking patterns are illustrated through clinical examples and interventions by the therapist as a “validating object” work to mitigate transmission to still the next generation. 相似文献
34.
35.
Many practical situations involve a response variable Y and covariates X , where data on (Y, X ) are incomplete for some portion of a sample of individuals. We consider two general types of pseudolikelihood estimation for problems in which missingness may be response-related. These are typically simpler to implement than ordinary maximum likelihood, which in this context is semiparametric. Asymptotics for the pseudolikelihood methods are presented, and simulations conducted to investigate the methods for an important class of problems involving lifetime data. Our results indicate that for these problems the two methods are effective and comparable with respect to efficiency. 相似文献
36.
In this article, we explore the impacts that education expansion and increased levels in educational homogamy have had on couples’ isolated illiteracy rates, defined as the proportion of illiterates in union that are married to an illiterate partner. First, we develop the methodology to decompose isolated illiteracy rates into two main components: one related to level of homogamy among illiterates, and the other related to the educational distribution of the spouses. Second, we use harmonized international census microdata from IPUMS and DHS data for 73 countries and 217 samples to investigate which of the two components is more important in shaping the level of isolated illiteracy. Our results indicate that the expansion of literacy has been more powerful than the increases in the tendency toward homogamy in its impact on isolated illiteracy rates. As the percentage of illiterates decreases over time, an increasingly large proportion of them marry literate individuals, showing that opportunities for intermarriage among illiterates expand despite the strengthening of homogamy. 相似文献
37.
The prospects of an intellectual revolution in sociology informed in part by a feminist perspective loomed large in the early
1970s. Following Ward and Grant's (1985) empirical examination of gender and feminist scholarship in sociology journals between
1974 and 1983, our research provides an empirical assessment of the “second ten years” after the feminist critique of the
discipline, 1984–1993. Specifically, we examine the incorporation of gender-content scholarship into mainstream sociology
journals. Our research also assesses the extent to which gender-content scholarship published in these journals is feminist-oriented
or not and the extent to which this is influenced by the sex of authors, the type of journal, and the sex composition of editorships
and editorial boards. Our findings indicate that although there were more gender- and feminist-oriented articles published
in the recent ten-year period, proportionally there were fewer feminist-oriented articles than in the previous ten-year period.
Our findings suggest that a feminist revolution in sociology is not likely to occur anytime soon, although the assimilation
of feminist scholarship into sociology is occurring along the lines of other critical intellectual movements in recent decades.
David V. Waller current research focuses on intellectual and social changes in the social sciences including the impact of
electronic journals on communication among scientists, and on the geopolitical and economic determinants of change in the
contemporary world system.
Dana Dunn has authored articles on gender stratification, sex-based earnings inequality, and women in political office, and
is editor of Workplace/Women's Place, a textbook addressing women's experiences in the workplace.
Please direct all correspondence to David V. Waller, Assistant Professor of Sociology, Department of Sociology and Anthropology,
Box 19599, University of Texas, Arlington, TX 76019 or to Waller@uta.edu. 相似文献
38.
The increasing diversity of the student age population in the USA calls for increased cultural competence on behalf of educators to effectively teach students. This article reports on a study of a suburban school district’s initiatives that utilized the Development Model of Intercultural Sensitivity, the Intercultural Development Inventory (IDI) as a baseline measurement tool, and subsequent professional development for teachers, to promote the development of intercultural competence. ANOVA and regression analysis models were used to determine the variables that affect teachers’ perceived intercultural competence after their participation in professional development. 相似文献
39.
Title II of the Americans with Disabilities Act (ADA) prohibits public entities in the US from discriminating against people on the basis of a disability. The term 'public entity' includes all state, territorial, and local governments and their instrumentalities. A survey was conducted to determine the extent of compliance by public entities in the US. Based on the survey the conclusion is that the ADA is being implemented on the state, territorial, and local levels in the US to a satisfactory extent. 相似文献
40.
Joan Letendre 《Child and Adolescent Social Work Journal》2007,24(4):353-368
Aggression in girls is a problem that is gaining increased attention. The indirect forms of relational aggression historically
used by girls to harm their victims are increasingly escalating into physical altercations. An understanding of the interplay
between the developmental and contextual factors that contribute to learned aggression in girls is needed to inform program
development that truly responds to the unique gender socialization of girls. This article examines parental, environmental,
and peer factors for their contributions to the development of girls’ aggression. Implications for program development that
teaches girls and their families alternative ways of expressing their needs and protecting themselves from harm is discussed. 相似文献