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991.
Understanding factors that influence screening receptivity may enhance African-American men’s receptivity to prostate cancer screening. Men of African descent (N = 481) between the ages of 40 and 70 were recruited. The hypotheses that Fatalism would be related to Intrinsic Religiousness and Fear, Intrinsic Religiousness would act as a mediator between Fatalism and Fear, and Fatalism as well as Prostate Cancer-Specific Fear would be negatively related to past Prostate-Specific Antigen Testing and Screening Intent were supported. This meditational finding suggests that when religious beliefs are a motivating force, the fear-inducing effects of fatalism are reduced.  相似文献   
992.
Cerebral lateralization has been suggested to convey a selective advantage to individuals by enhancing their cognitive abilities. Few, however, have explicitly compared the cognitive ability of animals with strongly contrasting laterality. Here, we examined the influence of laterality on learning performance in the crimson spotted rainbowfish, Melanotaenia duboulayi, using a classical conditioning paradigm. We also compared the learning ability of wild caught and captive-reared fish to examine the influence of rearing environment on cognitive performance. Laterality was established by observing which eye fish preferred to use while viewing their mirror image. Subjects were then conditioned to associate the appearance of a red light with a food reward over 7 days. Our results revealed that left-lateralized fish learned the conditioning task faster than right-lateralized. These results provide further evidence that cerebral lateralization can play important roles in cognitive function which likely have diverse fitness consequences for animals in their natural environments.  相似文献   
993.
The purpose of this research was to examine the impact of worker characteristics (e.g., time spent caring for others), workplace support, and child characteristics on work family conflict among parents of atypically developing children. Participants (N = 51) were employed parents of atypically developing children who completed measures of work family conflict, workplace supports (i.e., supervisory support and organizationally supportive cultures), the availability and use of family supportive workplace programs, child characteristics, and worker characteristics. Hierarchical multiple regression analyses indicated that worker and child characteristics significantly predicted work family conflict, work in family interference, and family in work interference. In addition, workplace supports significantly predicted work family conflict and family in work interference. Implications of the results for managing the work family life interface are discussed.  相似文献   
994.
Human participants searched in a dynamic three-dimensional computer-generated virtual-environment open-field search task for four hidden goal locations arranged in a diamond configuration located in a 5 × 5 matrix of raised bins. Participants were randomly assigned to one of two groups: visual pattern or visual random. All participants experienced 30 trials in which four goal locations maintained the same spatial relations to each other (i.e., a diamond pattern), but this diamond pattern moved to random locations within the 5 × 5 matrix from trial to trial. For participants in the visual pattern group, four locations were marked in a distinct color and arranged in a diamond pattern that moved to a random location independent of the hidden spatial pattern from trial to trial throughout the experimental session. For participants in the visual random group, four random locations were marked with a distinct color and moved to random locations independent from the hidden spatial pattern from trial to trial throughout the experimental session. As a result, the visual cues for the visual pattern group were consistent but not coincident with the hidden spatial pattern, whereas the visual cues for the visual random group were neither consistent nor coincident with the hidden spatial pattern. Results indicated that participants in both groups learned the spatial configuration of goal locations and that the presence of consistent but noncoincident visual cues facilitated the learning of spatial relations among locations.  相似文献   
995.
Haines Brown 《Axiomathes》2014,24(3):291-312
The paper assumes that to be of practical interest process must be understood as physical action that takes place in the world rather than being an idea in the mind. It argues that if an ontology of process is to accommodate actuality, it must be represented in terms of relative probabilities. Folk physics cannot accommodate this, and so the paper appeals to scientific culture because it is an emergent knowledge of the world derived from action in it. Process is represented as a contradictory probability distribution that does not depend on a spatio-temporal frame. An actuality is a probability density that grounds the values of probabilities to constitute their distributions. Because probability is a conserved value, probability distributions are subject to the constraint of symmetry and must be zero-sum. An actuality is locked-in by other actualities to become a zero-sum symmetry of probability values. It is shown that the locking-in of actualities constructs spatio-temporal locality, lends actualities specificity, and makes them a contradiction. Localization is the basis for understanding empirical observation. Because becoming depends on its construction of being, processes exist as trajectories. The historical trajectories of evolution and revolution as well as the non-historical trajectory of strong emergence are how processes are observed to exist.  相似文献   
996.
Youth partnerships are a promising but understudied strategy for prevention and health promotion. Specifically, little is known about how the functioning of youth partnerships differs from that of adult partnerships. Accordingly, this study compared the functioning of youth partnerships with that of adult partnerships. Several aspects of partnership functioning, including leadership, task focus, cohesion, participation costs and benefits, and community support, were examined. Standardized partnership functioning surveys were administered to participants in three smoke‐free youth coalitions (n = 44; 45 % female; 43 % non‐Hispanic white; mean age = 13) and in 53 Communities That Care adult coalitions (n = 673; 69 % female; 88 % non‐Hispanic white; mean age = 49). Multilevel regression analyses showed that most aspects of partnership functioning did not differ significantly between youth and adult partnerships. These findings are encouraging given the success of the adult partnerships in reducing community‐level rates of substance use and delinquency. Although youth partnership functioning appears to be strong enough to support effective prevention strategies, youth partnerships faced substantially more participation difficulties than adult partnerships. Strategies that youth partnerships can use to manage these challenges, such as creative scheduling and increasing opportunities for youth to help others directly, are discussed.  相似文献   
997.
998.
Variability in local dynamic plasticity due to material anisotropy in polycrystalline metals is likely to be important on damage nucleation and growth at low pressures. Hydrodynamic instabilities could be used to study these plasticity effects by correlating measured changes in perturbation amplitudes at free surfaces to local plastic behaviour and grain orientation, but amplitude changes are typically too small to be measured reliably at low pressures using conventional diagnostics. Correlations between strength at low shock pressures and grain orientation were studied in copper (grain size?≈?800 μm) using the Richtmyer–Meshkov instability with a square-wave surface perturbation (wavelength = 150 μm, amplitude = 5 μm), shocked at 2.7 GPa using symmetric plate impacts. A Plexiglas window was pressed against the peaks of the perturbation, keeping valleys as free surfaces. This produced perturbation amplitude changes much larger than those predicted without the window. Amplitude reductions from 64 to 88% were measured in recovered samples and grains oriented close to 〈0 0 1〉 parallel to the shock had the largest final amplitude, whereas grains with shocks directions close to 〈1 0 1〉 had the lowest. Finite element simulations were performed with elastic-perfectly plastic models to estimate yield strengths leading lead to those final amplitudes. Anisotropic elasticity and these yield strengths were used to calculate the resolved shear stresses at yielding for the two orientations. Results are compared with reports on orientation dependence of dynamic yielding in Cu single crystals and the higher values obtained suggest that strength estimations via hydrodynamic instabilities are sensitive to strain hardening and strain rate effects.  相似文献   
999.
1000.
We examined the relationships between promotion and prevention focus and caloric consumption in reaction to a dietary lapse scenario among weight loss maintainers. Participants were 65 adult females who had attained and maintained a weight loss of 10 % or more for at least 1 month. After engaging in a dietary lapse in a feeding laboratory, participants completed a “bogus” taste test, during which they could consume as much food as they liked. It was hypothesized that promotion and prevention focus would predict caloric consumption, mediated by depressive and anxious affect. Prevention focus, but not promotion focus, was positively associated with proportion of daily calories consumed. Affect was not a mediator. Prevention focus may be deleterious for dietary maintenance following dietary lapses. Theoretical and clinical implications are discussed in light of prior research. Limitations of the study and recommendations for future research also are presented.  相似文献   
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