Structure of Anxiety and Depression in Urban Youth: An Examination of the Tripartite Model.

In this study, the authors examined the validity of the tripartite model of anxiety and depression (L. A. Clark & D. Watson, 1991) in a community epidemiological sample of 467 urban African American youth. Participants completed the Baltimore How I Feel (N. S. Ialongo, S. G. Kellam, & J. Poduska, 1999), a measure of anxiety and depressive symptoms, in Grades 6 and 9. Confirmatory factor analyses indicated that a 3-factor model representing the tripartite model fit the data well and better than competing models. Longitudinal confirmatory factor analysis revealed configural invariance of the tripartite factor structure. However, a predicted divergence among dimensions over time was not evidenced. High correlations among the tripartite dimensions suggest that anxiety and mood symptoms may not differentiate in urban youth. Results are discussed in terms of the ethnicity and urban context of this community sample. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

A scalable manufacturing process for flexible active‐matrix e‐paper displays

Abstract— A scalable manufacturing process for fabricating active‐matrix backplanes on low‐cost flexible substrates, a key enabler for electronic‐paper displays, is presented. This process is based on solution processing, ink‐jet printing, and laser patterning. A multilayer architecture is employed to enable high aperture ratio and array performance. These backplanes were combined with E Ink electrophoretic media to create high‐performance displays that have high contrast, are bistable, and can be flexed repeatedly to a radius of curvature of 5 mm.     

Empirically derived MMPI profile clusters and characteristics of low back pain patients.

Analysis of the MMPI scores of 401 low-back-pain patients (average age 45 yrs) by a multivariate clustering procedure produced 5 homogeneous subgroups. Three groups with elevated MMPI profiles and 2 unelevated groups showed differences in age, employment, marital status, pretreatment pain intensity, and activity limitations. Follow-up comparisons at 6-mo and 1-yr intervals revealed that the elevated subgroups had a poorer response to treatment. (8 ref) (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

The use of coal liquefaction catalysts for coal/oil coprocessing and heavy oil upgrading

The catalytic hydrogenation of heavy oil and mixed coal-heavy oil (coprocessing) systems has been the focus of a recent study at the Federal Energy Technology Center (FETC). The intent of this effort was to extend the use of coal liquefaction technologies to heavy oil upgrading and coprocessing systems. Specifically, new dispersed molybdenum-based catalysts developed at FETC and a novel silica-doped hydrous titanium oxide (HTO : Si)-supported NiMo catalyst developed at Sandia National Laboratories (SNL) were tested in these systems. The results indicate the potential of coal liquefaction catalysts for use in coprocessing and heavy oil upgrading. High conversions of coal–oil mixtures were observed with dispersed catalyst loadings as low as 100 ppm Mo. Similar results were observed in heavy oil systems. Also, the novel NiMo/HTO : Si catalyst was at least as effective as commercially-available supported catalysts (e.g. Amocat 1C) for conversion of high boiling point material to distillable products and aromatics removal.     

Higher-order model of resilience in the Canadian forces.

Psychological resilience is an important construct for those who work in high-stress, potentially traumatic occupations. Using data collected as part of the Canadian Forces (CF) Recruit Health Questionnaire (RHQ), structural equation modelling analyses were performed to test the fit of a model of resilience comprised of several intrapersonal resilience factors (i.e., Big Five personality traits, dispositional affect, dispositional optimism, hardiness, mastery, self-esteem) and one interpersonal resilience factor (i.e., social support). An initial model showed that all lower-order intrapersonal variables loaded significantly onto a higher-order intrapersonal resilience latent factor, and that this factor was significantly correlated with social support. However, the strong intercorrelations between a few of the intrapersonal variables pointed to some redundancy. Based on empirical data and on a conceptual analysis, an alternative, more parsimonious model of resilience was developed. This model consisted of the Big Five personality traits, positive affect, and mastery as lower-order factors of dispositional resilience, which was hypothesised to be correlated with social support. This analysis is an important first step to developing an approach to conceptualise and measure resilience. One benefit of being able to assess resilience is that doing so can inform the development of programs to enhance mental health, readiness and recovery. However, more research is needed to understand the processes through which these psychological factors influence occupational as well as health outcomes before relevant policies may be developed. (PsycINFO Database Record (c) 2011 APA, all rights reserved)     

Co-occurrence of eating disorders and incest: The role of attachment, family environment, and social competencies.

Childhood attachment, family environment, and adult social competencies were examined to explain the association between sexual abuse and eating disorders (EDs). Female college students (n?=?102) and female clients sexually abused in childhood (n?=?52) completed surveys retrospectively that assessed parental bonds, family environment, and sexual abuse, as well as current self-efficacy, social support, intimacy, adult attachment style, and ED symptoms. Client incest survivors had a higher ED rate (47%) than did sexually abused clients (22%), student incest survivors (24%), or nonabused students (17%). Significant associations were found between family environment, incest, social competencies, and eating disorders. Incest survivors had more dysfunctional families and lower social competencies than did nonabused women. Among incest survivors, those with the lowest levels of social competencies and poorest bonds with their mothers had more ED symptoms. (PsycINFO Database Record (c) 2010 APA, all rights reserved)     

用于配线网的24芯光纤带的分析

４３２芯中心管式光缆设计采用标准的２４芯光纤带,提高了光纤的分布密度。该新光纤带可方便地在端部或中部撕裂为２个１２芯子光纤带,而这１２芯的子光纤带又完全能与现有标准光纤带熔接机相配。使用能持续干净地将２４芯光纤带分解为１２芯光纤带的新工具,不会使１２芯子光纤带散开。     

Vaporization behavior and thermodynamic stability of V2P(s)

The vaporization behavior and thermodynamic stability of V₂P(s) were investigated by mass loss effusion and effusion mass spectrometry, the latter by an ion current ratio method. Enthalpies of formation with white phosphorus as the reference state and enthalpies of atomization were calculated. Results from the two types of experiments are in good agreement. Mean values of V₂P(s): Δ_fH°_298.15 = −209.0±5 kJ mol⁻¹, Δ_atH°_298.15 = 1556.4 kJ mol⁻¹. Recalculated values for V₃P(s): Δ_fH°_298.15 = −233.13±5 kJ mol⁻¹, Δ_atH°_298.15 = 2096.0 kJ mol⁻¹.     

Correction to McCreary and Thompson (2006).

Reports an error in "Development of Two Reliable and Valid Measures of Stressors in Policing: The Operational and Organizational Police Stress Questionnaires" by Donald R. McCreary and Megan M. Thompson (International Journal of Stress Management, 2006[Nov], Vol 13[4], 494-518). The authors of this paper carried out this research on behalf of the Government of Canada, and, as such the copyright in this paper belongs to the Crown, that is to the Canadian government. Non-exclusive permission is granted to requesters to translate and to reproduce this content in any form provided that its source, the authors, and the Defence R&D Canada are clearly indicated. (The following abstract of the original article appeared in record 2006-21928-007.) This article describes the development and validation of the Operational Police Stress Questionnaire (PSQ-Op) and the Organizational Police Stress Questionnaire (PSQ-Org). In Study 1, a series of focus groups were used to elicit the most common stressors associated with policing. During this study, it became apparent that officers separated their stressors into two general categories: operational and organizational. In the following three studies, the PSQ-Op and PSQ-Org were assessed for reliability and validity. The findings showed that both forms of the PSQ were reliable and demonstrated construct validity (correlations between perceived stress and frequency), discriminant validity (compared with general life stressors), and concurrent validity (compared with job satisfaction measures). (PsycINFO Database Record (c) 2010 APA, all rights reserved)