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11.
Byungwon Kim Stephan Huckemann Jrn Schulz Sungkyu Jung 《Scandinavian Journal of Statistics》2019,46(4):1047-1071
We propose novel parametric concentric multi‐unimodal small‐subsphere families of densities for p ? 1 ≥ 2‐dimensional spherical data. Their parameters describe a common axis for K small hypersubspheres, an array of K directional modes, one mode for each subsphere, and K pairs of concentrations parameters, each pair governing horizontal (within the subsphere) and vertical (orthogonal to the subsphere) concentrations. We introduce two kinds of distributions. In its one‐subsphere version, the first kind coincides with a special case of the Fisher–Bingham distribution, and the second kind is a novel adaption that models independent horizontal and vertical variations. In its multisubsphere version, the second kind allows for a correlation of horizontal variation over different subspheres. In medical imaging, the situation of p ? 1 = 2 occurs precisely in modeling the variation of a skeletally represented organ shape due to rotation, twisting, and bending. For both kinds, we provide new computationally feasible algorithms for simulation and estimation and propose several tests. To the best knowledge of the authors, our proposed models are the first to treat the variation of directional data along several concentric small hypersubspheres, concentrated near modes on each subsphere, let alone horizontal dependence. Using several simulations, we show that our methods are more powerful than a recent nonparametric method and ad hoc methods. Using data from medical imaging, we demonstrate the advantage of our method and infer on the dominating axis of rotation of the human knee joint at different walking phases. 相似文献
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Jeremy D. Franklin 《Race Ethnicity and Education》2019,22(5):589-609
Student of Color often reference racial microaggressions when asked to describe their post-secondary experience. The racial battle fatigue framework assists in understanding the cumulative, negative effect of racial microaggressions on psychological, behavioral, and physiological outcomes. This paper assesses the racial battle fatigue framework for African American and Mexican American college students and the impact of coping on racial stress. Results demonstrate that racial microaggressions negatively impact stress responses for African American and Mexican Americans differently, but coping may help alleviate the impact of racial battle fatigue. Universities can address racial microaggressions and negative health outcomes by educating campus constituents about racial microaggressions, addressing Whiteness, and providing education about adaptive coping strategies. 相似文献
14.
Justin Pulford Maria Bellringer Max Abbott Dave Clarke David Hodgins Jeremy Williams 《Journal of gambling studies / co-sponsored by the National Council on Problem Gambling and Institute for the Study of Gambling and Commercial Gaming》2009,25(1):33-48
This paper presents barriers to help-seeking data as reported by users of a national gambling helpline (help-seekers, HS,
N = 125) as well as data pertaining to perceived barriers to seeking help as reported by gamblers recruited from the general
population (non-help-seekers, NHS,
N = 104). All data were collected via a structured, multi-modal survey. When asked to identify actual or perceived barriers
to seeking help, responses indicative of pride (78% of HS participants, 84% of NHS participants), shame (73% of HS participants,
84% of NHS participants) or denial (87% of NHS participants) were most frequently reported. These three factors were also
most often identified as the real or perceived primary barrier to help-seeking (collectively accounting for 55% of HS, and
60% of NHS, responses to this question) and were the only barriers to be identified by more than 10% of either HS and NHS
participants without prompting. It was of note, however, that participants in both groups identified multiple barriers to
help-seeking (mean of 6.7 and 12.2, respectively) and that, when presented with a list of 21 possible barrier items, NHS participants
endorsed 19 of the listed items significantly more often than their HS counterparts. The implications of these findings, with
respect to promoting greater or earlier help-seeking activity amongst problem gamblers, are discussed.
相似文献
Justin PulfordEmail: |
15.
This study investigated the relation between maternal contingent responsiveness and 4‐ and 5‐month‐old infants' (N = 64) social expectation behavior in a still‐face procedure. Mothers were asked to interact with their infants for 2 min (interactive phase), remain still‐faced for 1 min (still‐face phase), and resume interaction for 2 min. Mother and infant behavior was assessed for the frequency of infant and mother smiles, mother smiles that were contingent to infant smiles and infant smiles were contingent to mother smiles during the interactive phase, and infant social bids to mother during the still‐face phase. Hierarchical regression showed that mother contingent smiles during the interactive phase accounted for unique variance in infant social bids during the still‐face phase beyond that accounted for by the frequency of mother and infant smiles during the interactive phase. These results support the view that young infants' social expectations and sense of self‐efficacy are formed within their interactions with their caregivers. 相似文献
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Jeremy Braithwaite 《Journal of child sexual abuse》2018,27(6):589-611
Though there is evidence linking the history of colonialism and oppression of Indigenous people to the high rates of rape and child sexual abuse experienced by this population today, it is less understood how colonial processes, past and present, condition the decision to disclose or report victimization. Drawing on a survivorship storytelling study of rural Alaska Native survivors of child sexual abuse, this paper underscores the importance of centering colonialism in understanding the culture of silence surrounding sexual victimization among Indigenous people. Results show that reasons for non-disclosure are quite embedded within larger social, historical and political themes of colonialism, oppression, and marginalization. Implications for policy and praxes are discussed, as well as a broader mandate of social change to remove barriers to disclosure. 相似文献
18.
Jeremy Jewell Megan Schmittel Allison McCobin Stephen Hupp Andrew Pomerantz 《Journal of divorce & remarriage》2017,58(1):16-28
This study evaluated the effectiveness of the 2nd and 3rd editions of the Children First parent education programs for parents experiencing divorce or separation. Participants were 678 parents experiencing separation or divorce in 2 Midwestern counties. Changes from pretest to posttest on participants’ knowledge, attitudes, and likelihood of adaptive coparenting were assessed. Both editions of the program had a significant positive effect on all 3 measures of adaptive coparenting. The effect sizes from pretest to posttest for the 2nd edition were small, whereas the effect sizes for the 3rd edition of the program were nearly twice as large. Superiority of the 3rd edition might be due to an increased focus on explicit training on adaptive coparenting behaviors. 相似文献
19.
Sea-Level Rise (SLR) Projections from the National Oceanic and Atmospheric Administration (NOAA) and the U.S. Army Corp of Engineers (USACE) indicate increasing, and imminent, risk to coastal communities from tidal flooding and hurricane storm surge. Building on recent research related to the potential demographic impacts of such changes (Hauer et al. 2016, in Nat Clim Chang 3:802–806, 2017; Neumann et al. 2015; Curtis and Schneider in Popul Environ 33:28–54, 2011), localized flooding projections in the Miami Beach area (Wdowinski et al. in Ocean Coast Manag 126:1–8, 2016) and projected economic losses associated with this rise in projected SLR (Fu et al. Ocean Coast Manag 133:11–17, 2016); this research investigates the accrued current cost, in terms of real-estate dollars lost, due to recurrent tidal flooding and projected increases of flooding in Miami-Dade County. Most directly related to this line of research, Keenan et al. (2018) have recently produced results indicating that Climate Gentrification is taking place in Miami, FL with higher elevations in flood prone areas appreciating at a higher rate. In that vein of thinking, we seek to answer a question posed by such research: What is the actual accrued loss to sea-level rise over the recent past? To answer this question, we replicate well-documented estimation methods by combining publicly available sea-level rise projections, tide gauge trends, and property lot elevation data to identify areas regularly at risk of flooding. Combining recent patterns of flooding inundation with future forecasts, we find that properties projected to be inundated with tidal flooding in 2032 have lost $3.08 each year on each square foot of living area, and properties near roads that will be inundated with tidal flooding in 2032 have lost $3.71 each year on each square foot of living area. These effects total over $465 million in lost real-estate market value between 2005 and 2016 in the Miami-Dade area. 相似文献
20.
Samantha Schulz 《Race Ethnicity and Education》2017,20(2):209-224
AbstractDistinct from rurality, the Australian desert has long functioned as a signifier of remoteness in the dominant imagination; a product of spatialised binary relations between ‘progressive’ (white) mainstream or idealised white countryside, and disordered/dangerous Aboriginal periphery. Remoteness constitutes a complex racial dynamic that has historically mediated white teachers’ and missionaries’ desires to travel to the social margins. This article adopts a discursive understanding of remoteness to examine contemporary white teachers’ decisions to work in Aboriginal schools in the desert – decisions that are often articulated through unwitting recourse to the ‘three Ms’ or ‘tourist’. The article explores these identity constructs and how they enable different performances of whiteness. It examines how white people’s desires are often covertly raced but does not however, position the teacher as a priori racist. Rather, desire is theorised as a social construct in which subjects invest, which may at times contribute toward processes of decolonisation. This rendering moves beyond a logic of individualism and underpins the argument that recognising how these dynamics play out is vital with respect to understanding the place of white teachers inside remote Indigenous Education. Moreover, such insights are valuable for appreciating how whiteness continues to be reproduced in White Australia under a guise of good intentions. 相似文献