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61.
In this paper we present a unified discussion of different approaches to the identification of smoothing spline analysis of
variance (ANOVA) models: (i) the “classical” approach (in the line of Wahba in Spline Models for Observational Data, 1990; Gu in Smoothing Spline ANOVA Models, 2002; Storlie et al. in Stat. Sin., 2011) and (ii) the State-Dependent Regression (SDR) approach of Young in Nonlinear Dynamics and Statistics (2001). The latter is a nonparametric approach which is very similar to smoothing splines and kernel regression methods, but based
on recursive filtering and smoothing estimation (the Kalman filter combined with fixed interval smoothing). We will show that
SDR can be effectively combined with the “classical” approach to obtain a more accurate and efficient estimation of smoothing
spline ANOVA models to be applied for emulation purposes. We will also show that such an approach can compare favorably with
kriging. 相似文献
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Kim Andrew Taeho Erickson Matt Zhang Yurong Kim ChangHwan 《Population research and policy review》2022,41(3):1325-1358
Population Research and Policy Review - The sharp decline in employment after the COVID-19 lockdown was not uniformly felt across demographic groups. Utilizing the 2017 to 2020 monthly Current... 相似文献
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Rates of unprotected anal intercourse and HIV infection are alarmingly high among young gay males. This second wave of infection indicates that traditional models for AIDS education are not working. AIDS educators need to rethink HIV-prevention efforts. Studies consistently find a high level of knowledge about HIV transmission and high levels of commitment to safer sex among gay males, but what accounts for the breakdown between safer sex intentions and practices among them? This article employs social constructionist and queer theoretical assertions that sexuality is socially and culturally produced in complicated and pluralist ways. The analysis examines how risky sexual situations shape young gay males' sexualities by exploring two examples selected to represent, alternatively, models of safer sexual and unsafe sexual trajectories. Implications for HIV prevention practices and policies are discussed. 相似文献
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Matt Carlson 《Sociology Compass》2009,3(4):526-542
The study of journalism has long included a close examination of who gets to be a news source. With their privileging of the objectivity paradigm and distrust of direct reportorial experience, journalists turn to outside sources to provide evidence for their accounts. But this is not a mere exchange of information; patterns of news sourcing confer authority and legitimacy on certain sources or groups while ignoring others. Over time, sourcing routines reinforce notions of who possesses social power. This essay reviews conceptualizations of how journalist–source dynamics result in the production of certain representations of the way things are. Three perspectives receive attention: viewing the journalist–source relationship as symbiotic and mutually beneficial, as dominated by sources who set the cultural definition of events and problems, and as marked by incessant competition over news access and the ability to shape news frames. While the work on news sources has been extremely productive in conceptualizing the relationship between definitional power and journalism, the shifting media environment requires renewed attention to the relationship between journalists and their sources. 相似文献
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Occupational Segregation and the Gender Gap in Workplace Authority: National Versus Local Labor Markets 总被引:1,自引:0,他引:1
Previous research linking occupational gender segregation to the workplace authority gap assumes that the effect of gender composition is invariant across occupations, ignoring the important distinction of whether an occupation's relevant labor market is local or national. We offer a new method for defining occupational labor markets and hypothesize that the effect of occupation gender composition on the authority gap will be strongest in national labor market occupations. Both sexes' odds of possessing work authority decline with the representation of women; this effect is strongest in the more desirable, national labor market occupations. Assuming occupations are part of one labor market results in understating the gender composition penalty for national labor market occupations. 相似文献
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