266 research outputs found

    Filtering in Office Markets: Evidence from Medium-Size Cities

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    Filtering, a change in the quality of use for a structure, has been studied extensively in housing. However, there are reasons to believe that the phenomenon is at least as significant in office markets. Reasons to expect filtering in office markets are presented in this article. Then evidence of filtering is examined from two medium-size cities. The findings are strongly consistent with the presumed effects of filtering. As expected, evidence of filtering is least significant for large downtown highrise offices, more significant among clustered suburban office buildings, and most significant among isolated office buildings.

    Post-traumatic stress disorder interventions for children and adolescents affected by war in low- and middle-income countries in the Middle East: systematic review

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    Background Millions of children and adolescents are exposed to wars, affecting their psychological well-being. This review focuses on psychosocial interventions in low and middle-income countries (LMICs) in the Middle East, where mental health services are limited. Aims Our primary aim was to evaluate the effectiveness of trial-assessed psychosocial interventions in reducing post-traumatic stress disorder (PTSD) symptoms in children and adolescents aged ≤18 years who were exposed to war in LMICs in the Middle East. Changes in other psychological conditions and symptoms were evaluated where reported. Method PubMed, Cochrane Library and Ovid were searched without year restriction, in December 2021. Previous review reference lists were also checked. Only studies published in English were included. Each study was evaluated for risk of bias and results are presented as a narrative synthesis. Results Three group-based interventions were identified and evaluated across six studies: ‘Teaching Recovery Techniques’, ‘Writing for Recovery’ and ‘Advancing Adolescents’. Two studies took place in post-war settings, and four in a context of ongoing conflict. Positive experiences and improved social skills were indicated following most interventions, but Teaching Recovery Techniques was the only programme associated with a statistically significant reduction in PTSD score. Differences in follow-up interval limited comparability of outcomes. Conclusions This review highlights a paucity of evidence for effective treatment options for children and adolescents affected by war from LMICs in the Middle East. Promising indications of reductions in PTSD symptoms, specifically from Teaching Recovery Techniques, require further rigorous evaluation and long-term follow-up

    Fathers' parenting behaviors and Malaysian adolescents' anxiety: family income as a moderator

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    The present study examined the moderating role of family income on the relationships between perceived paternal parenting behavior and adolescents’ anxiety among economically and ethnically diverse sample of adolescents. A total of 1,200 participants aged between 12 and 17 years were selected for the study. A self-administered questionnaire, including Quality of Parenting Behavior Scale and Beck Anxiety Inventory–Malay were used to collect the data. The results obtained indicate that there was a significant relationship between paternal hostility (β = .34, p < .001) and paternal monitoring (β = −.29, p < .01) with adolescents’ anxiety. A multigroup analysis using structural equation modeling also demonstrated that family income level moderated the relationship between parenting and adolescent outcomes. The findings revealed that paternal consistent discipline and paternal monitoring behavior reduced adolescent anxiety in high-income families. Finding advanced understanding on how the associations between fathers’ parenting behaviors and adolescent anxiety could be quite varied when family’s financial circumstances were taken into account

    From progesterone in biopsies to estimates of pregnancy rates: Large scale reproductive patterns of two sympatric species of common dolphin, Delphinus spp. off California, USA and Baja, Mexico

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    Blubber progesterone levels were measured in biopsy samples and used to predict the pregnancy status of 507 female common dolphins (204 long-beaked common dolphins, Delphinus capensis, and 303 short-beaked common dolphins, D. delphis). Samples were collected in the coastal waters of the eastern North Pacific between central California, USA and the southern end of Baja California, Mexico. The percentage of females pregnant was similar between the two species: 22.1% (n = 45) of D. capensis and 28.1% (n = 85) of D. delphis. For both species we found strong geographic patterns in pregnancy, suggesting that some areas were more conducive for pregnant females. A sizable drop in percent pregnant from early (38.8%, n = 133) to late (25.3%, n = 91) autumn was found in D. delphis but not in D. capensis. The potential for sample selectivity was examined via biopsies collected either from a large research ship or from a small, rigid-hull inflatable boat (RHIB) launched from the larger ship. An analysis of “Tandem Biopsy Sampling”, replicate biopsy effort on the same schools from each vessel/platform, yielded little evidence that disproportionately more pregnant female common dolphins were biopsied from one platform versus the other. This result plus an analysis of pregnancy status relative to the duration of biopsy operations failed to uncover strong evidence of unaccounted sampling bias with respect to pregnancy state. In total, these results demonstrate the utility of blubber progesterone concentrations to assess pregnancy status in free-ranging cetaceans and they highlight potential factors associated with population-level variation in dolphin pregnancy rates

    The Role of the Tight-Turn, Broken Hydrogen Bonding, Glu222 and Arg96 in the Post-translational Green Fluorescent Protein Chromophore Formation

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    Green fluorescent proteins (GFP) and GFP-like proteins all undergo an autocatalytic post-translational modification to form a centrally located chromophore. Structural analyses of all the GFP and GFP-like proteins in the protein databank were undertaken to determine the role of the tight-turn, broken hydrogen bonding, Gly67, Glu222 and Arg96 in the biosynthesis of the imidazolone group from 65SYG67. The analysis was supplemented by computational generation of the conformation adopted by uncyclized wild-type GFP. The data analysis suggests that Arg96 interacts with the Tyr66 carbonyl, stabilizing the reduced enolate intermediate that is required for cyclization; the carboxylate of Glu222 acts as a base facilitating, through a network of two waters, the abstraction of a hydrogen from the α-carbon of Tyr66; a tight-turn conformation is required for autocatalytic cyclization. This conformation is responsible for a partial reduction in the hydrogen bonding network around the chromophore-forming region of the immature protein

    Structured Learning in Time-dependent Cox Models

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    Cox models with time-dependent coefficients and covariates are widely used in survival analysis. In high-dimensional settings, sparse regularization techniques are employed for variable selection, but existing methods for time-dependent Cox models lack flexibility in enforcing specific sparsity patterns (i.e., covariate structures). We propose a flexible framework for variable selection in time-dependent Cox models, accommodating complex selection rules. Our method can adapt to arbitrary grouping structures, including interaction selection, temporal, spatial, tree, and directed acyclic graph structures. It achieves accurate estimation with low false alarm rates. We develop the sox package, implementing a network flow algorithm for efficiently solving models with complex covariate structures. Sox offers a user-friendly interface for specifying grouping structures and delivers fast computation. Through examples, including a case study on identifying predictors of time to all-cause death in atrial fibrillation patients, we demonstrate the practical application of our method with specific selection rules.Comment: 49 pages (with 19 pages of appendix),9 tables, 3 figure
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