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A Bayesian Approach for Multiple Response Surface Optimization in the Presence of Noise Variables 总被引:7,自引:0,他引:7
Guillermo Mir -Quesada Enrique Del Castillo John J. Peterson 《Journal of applied statistics》2004,31(3):251-270
An approach for the multiple response robust parameter design problem based on a methodology by Peterson (2000) is presented. The approach is Bayesian, and consists of maximizing the posterior predictive probability that the process satisfies a set of constraints on the responses. In order to find a solution robust to variation in the noise variables, the predictive density is integrated not only with respect to the response variables but also with respect to the assumed distribution of the noise variables. The maximization problem involves repeated Monte Carlo integrations, and two different methods to solve it are evaluated. A Matlab code was written that rapidly finds an optimal (robust) solution in case it exists. Two examples taken from the literature are used to illustrate the proposed method. 相似文献
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Peggy S. Keller E. Mark Cummings Kristina M. Peterson Patrick T. Davies 《Social Development》2009,18(3):536-555
Relations among parental depressive symptoms, overt and covert marital conflict, and child internalizing and externalizing symptoms were examined in a community sample of 235 couples and their children. Families were assessed once yearly for three years, starting when children were in kindergarten. Parents completed measures of depressive symptoms and children's internalizing and externalizing symptoms. Behavioral observations of marital conflict behaviors (insult, threat, pursuit, and defensiveness) and self report of covert negativity (feeling worry, sorry, worthless, and helpless) were assessed based on problem-solving interactions. Results indicated that fathers' greater covert negativity and mothers' overt destructive conflict behaviors served as intervening variables in the link between fathers' depressive symptoms and child internalizing symptoms, with modest support for the pathway through fathers' covert negativity found even after controlling for earlier levels of constructs. These findings support the role of marital conflict in the impact of fathers' depressive symptoms on child internalizing symptoms. 相似文献
85.
Large, family-based imaging studies can provide a better understanding of the interactions of environmental and genetic influences on brain structure and function. The interpretation of imaging data from large family studies, however, has been hindered by the paucity of well-developed statistical tools for that permit the analysis of complex imaging data together with behavioral and clinical data. In this paper, we propose to use two methods for these analyses. First, a variance components model along with score statistics is used to test linear hypotheses of unknown parameters, such as the associations of brain measures (e.g., cortical and subcortical surfaces) with their potential genetic determinants. Second, we develop a test procedure based on a resampling method to assess simultaneously the statistical significance of linear hypotheses across the entire brain. The value of these methods lies in their computational simplicity and in their applicability to a wide range of imaging data. Simulation studies show that our test procedure can accurately control the family-wise error rate. We apply our methods to the detection of statistical significance of gender-by-age interactions and of the effects of genetic variation on the thickness of the cerebral cortex in a family study of major depressive disorder. 相似文献
86.
Kristin M. Peterson 《Sociology Compass》2020,14(3)
As religious identity and spiritual practices transform and expand in the digital media moment, this article advocates for more critical scholarship on media and religion that examines the complex ways that individuals make meaning in the digital age. First, I present an overview of foundational media and religion theories that analyze the interactions between these ever‐changing fields, such as the culturalist tradition, mediatization theory, and the social shaping of technology approach. Furthermore, this essay highlights insightful research trends that blur distinctions between media spaces and complicate definitions of religion. Finally, a discussion of gaps in the scholarship will justify an argument for more theories centered in international contexts, as well as analysis of the relationships between media technologies, aesthetics, affect, identity and religious expression. These emerging approaches provide more in‐depth discussions of how the fast‐changing and ever‐complex digital culture is deeply connected to the evolving nature of religion and human existence. 相似文献
87.
Twenty‐four infants were tested monthly for gaze and point following between 9 and 15 months of age and mother‐infant free play sessions were also conducted at 9, 12, and 15 months (Carpenter, Nagell, & Tomasello, 1998). Using this data set, this study explored relations between maternal talk about mental states during mothers' free play with their infants and the emergence of joint visual attention in infants. Contrary to hypothesis, mothers' comments about their infants' perceptual states significantly declined after their infants began to engage in joint visual attention. Comments about other mental states did not change relative to acquisition of joint visual attention skill. We speculate that after infants begin to reliably follow gaze and points, mothers may switch the focus of their conversation from their infants' visual behavior and experiences to the object of their mutual attention. 相似文献
88.
Sex is often conceptualized either as wanted and consensual or as unwanted and nonconsensual, reflecting an implicit model of wanting that is unidimensional and dichotomous and that conflates wanting and consenting. This study has three objectives: developing a multidimensional model for conceptualizing the wantedness of a sexual act, using this model to compare women's experiences with rape and consensual sex, and assessing whether wantedness is related to rape acknowledgment. Participants were college women who described their experiences with rape (n = 77) or consensual sexual intercourse (n = 87). Results supported a multidimensional model of sexual wanting and a wanting—consenting distinction. Compared with acknowledged rape victims, unacknowledged rape victims reported wanting the sexual intercourse more despite not having consented. 相似文献
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Perceived admiration was examined in this study as a mediator of marital quality and transition to parenthood among Black American and White American couples. Positive and negative dimensions of marital quality were assessed for husbands (n = 148) and wives (n = 155) during their 1st and 3rd years of marriage in a large-scale survey. Findings revealed that transitioning Black American husbands reported lower marital tension than transitioning White American husbands. Perceived admiration mediated the link between transition to parenthood and marital well-being for wives, and between transition to parenthood and marital tension for husbands. Results suggest that perceived admiration plays a critical role in understanding the transition to parenthood, regardless of race. Insights are offered for practitioners who provide relationship or parental counseling and education to couples during the transition to parenthood. 相似文献