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Kenneth H. Pollock Christine M. Bunck Scott R. Winterstein Chiu-Lan Chen 《Journal of applied statistics》1995,22(5):661-672
In recent years, survival analysis of radio-tagged animals has developed using methods based on the Kaplan-Meier method used in medical and engineering applications (Pollock et al. , 1989a,b). An important assumption of this approach is that all tagged animals with a functioning radio can be relocated at each sampling time with probability 1. This assumption may not always be reasonable in practice. In this paper, we show how a general capture-recapture model can be derived which allows for some probability (less than one) for animals to be relocated. This model is not simply a Jolly-Seber model because it is possible to relocate both dead and live animals, unlike when traditional tagging is used. The model can also be viewed as a generalization of the Kaplan-Meier procedure, thus linking the Jolly-Seber and Kaplan-Meier approaches to survival estimation. We present maximum likelihood estimators and discuss testing between submodels. We also discuss model assumptions and their validity in practice. An example is presented based on canvasback data collected by G. M. Haramis of Patuxent Wildlife Research Center, Laurel, Maryland, USA. 相似文献
114.
Inglis C 《The British journal of sociology》2005,56(3):383-6; discussion 417-32
115.
Wulfert E Hartley J Lee M Wang N Franco C Sodano R 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2005,21(4):521-536
Gambling screening tools such as the South Oaks Gambling Screen (SOGS) and a DSM-IV Screen for Gambling Problems (NODS) developed
by the National Opinion Research Council have psychometrically validated lifetime and past-year versions. As research questions
often dictate shorter time intervals, researchers have adapted the time frames of these instruments to their specific purposes
without examining whether changing the time frame affects the psychometric properties. In this study, 3-month versions of
SOGS and NODS were administered to a sample of 80 pathological gamblers (59 men, 21 women, mean age 44) seeking treatment
at a state-funded facility. The 3-months versions had good internal consistency, good convergent validity with each other,
with gambling behaviors assessed via the timeline followback method, and with measures of impulsivity. The 3-month versions
also showed good discriminant validity with demographic variables and a measure of verbal IQ. Together the data indicate that
shortening the time frame to 3 months does not seem to have adverse effects on the psychometric properties of SOGS and NODS.
Thus these adapted versions could profitably be used for shorter time intervals, including as pre/post-treatment and follow-up
measures in treatment outcome studies. 相似文献
116.
Youth development does not take place only in institutions or even primarily in institutions. It takes place in the core economy-the economy of family, neighborhood, and community. Major challenges include rebuilding the kind of village it takes to raise a child and enabling a child to be part of that rebuilding. Another challenge is to make sure that any external incentives that are provided to youth are linked to activities that build self-esteem and convey a definition of value that is different from that established by money and market price. This chapter provides an introduction to time banking and to coproduction, approaches to youth development that enable youth to participate as major players, as opposed to recipients, in the reshaping of their lives and communities. 相似文献
117.
We examine the treatment of female characters in videocassette pornography. Using a systematic sample, we analyze 209 vignettes
in 40 x- to xxx- rated videos commercially available from a national chain in the local market. We found that most videos
had sexually violent or dehumanizing/degrading themes; however, a significant number also had a theme of intimacy. As expected,
we found little evidence (one case) of extreme sexual deviance. Extreme sexual deviance was the kind of sexual violence the
1986 Commission on Pornography assumed was commonly available in pornography today. We also examined how the race of the actor
shapes pornographic violence. As hypothesized, we found that black women experienced more violence from both white and black
men than was the case for white women. White women, in fact, experienced least violence when paired with a black man. Our
work replicates that of others in that we found few intimacy themes in material where black actors were present. 相似文献
118.
Noomi Christine Linde Matthiesen 《Race Ethnicity and Education》2017,20(4):495-507
Drawing on discursive psychology this article examines the understandings teachers and principals in Danish Public Schools have regarding Somali diaspora parenting practices. Furthermore, the article investigates what these understandings mean in interaction with children in the classrooms and with parents in home–school communication. It is argued that in a society with increased focus on parental responsibility the teachers and principals draw on a deficit logic when dealing with Somali diaspora parents and children which consequently leads to teachers either transmitting their expertise by educating parents or compensating for perceived deficiencies in parental practices. Both these strategies result in significant marginalizing consequences where ‘difference’ is understood as ‘wrong’ or ‘inadequate’. 相似文献
119.
ABSTRACT The shift in the technology landscape has altered the technology ecosystem of adolescents and emerging adults in the 21st century. Yet, with greater use of digital gadgets comes greater mental health risks that technological advancement brings. This study provides a narrative review of contemporary cyber risks faced by adolescents and emerging adults. In particular, this review will cover dangers and effects of cyber-bullying, social media, cyber-dating violence, sextortion, sexting, revenge porn, online dating, catfishing, and scammers, with an emphasis to raise awareness and encourage proactive efforts dedicated to address these social concerns as the digital era continues to evolve. 相似文献
120.
Rima Kaddoura Jocelyn DeJong Huda Zurayk Tamar Kabakian Christine Abbyad Fadi G. Mirza 《Women and birth : journal of the Australian College of Midwives》2019,32(2):e223-e228