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https://www.readbyqxmd.com/read/28429996/are-athletes-doping-related-attitudes-predicted-by-their-perceptions-of-coaches-confrontation-efficacy
#1
Philip Sullivan, Parmida Razavi
BACKGROUND: The coaching process is complex and dynamic. Coaches are known to affect athlete attitudes indirectly, through athletes' perceptions and interpretations. This process has been verified with a variety of ethical behaviors. OBJECTIVES: The current study investigated the relationships between athletes' perceived doping confrontation efficacy of their coaches and athlete's anti-doping attitudes. METHODS: A sample of athletes (N = 96) completed a version of the Doping Confrontation Efficacy Scale that was modified to assess their perception of their coaches' anti-doping confrontation efficacy, and the PEAS (Performance Enhancing Attitude Scale), which assessed their performance-enhancing attitudes...
April 21, 2017: Substance Use & Misuse
https://www.readbyqxmd.com/read/28429742/crossing-lines-a-multidisciplinary-framework-for-assessing-connectivity-of-hammerhead-sharks-across-jurisdictional-boundaries
#2
A Chin, C A Simpfendorfer, W T White, G J Johnson, R B McAuley, M R Heupel
Conservation and management of migratory species can be complex and challenging. International agreements such as the Convention on Migratory Species (CMS) provide policy frameworks, but assessments and management can be hampered by lack of data and tractable mechanisms to integrate disparate datasets. An assessment of scalloped (Sphyrna lewini) and great (Sphyrna mokarran) hammerhead population structure and connectivity across northern Australia, Indonesia and Papua New Guinea (PNG) was conducted to inform management responses to CMS and Convention on International Trade in Endangered Species listings of these species...
April 21, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28427051/subjective-time-perceptions-and-aging-well-a-review-of-concepts-and-empirical-research-a-mini-review
#3
Martina Gabrian, Anne J Dutt, Hans-Werner Wahl
Human beings impose subjective, time-related interpretations on their existence, and the experience of time is a major aspect of lifespan development. In this mini-review, we understand subjective time as the way individuals subjectively perceive and evaluate the passing of their personal "objective" lifetime. A broad range of constructs and operationalizations has been developed in (gero-) psychology to capture subjective time, including future time perspective, personal goals, or autobiographical memories...
April 21, 2017: Gerontology
https://www.readbyqxmd.com/read/28426888/adolescent-depression-differential-symptom-presentations-in-deaf-and-hard-of-hearing-youth-using-the-patient-health-questionnaire-9
#4
Melanie L Bozzay, Kimberly N O'Leary, Alessandro S De Nadai, Kim Gryglewicz, Gabriela Romero, Marc S Karver
The present study examined differences in symptom presentation in screening for pediatric depression via evaluation of the Patient Health Questionnaire-9 (PHQ-9). In particular, we examined whether PHQ-9 items function differentially among deaf and hard-of-hearing (DHH; n = 75) and hearing (n = 75) youth based on participants recruited from crisis assessment services. Multiple indicators multiple causes models were used to examine whether items of the PHQ-9 functioned differently between groups as well as whether there were group differences in the mean severity of depressive symptoms...
April 1, 2017: Journal of Deaf Studies and Deaf Education
https://www.readbyqxmd.com/read/28425122/mean-intercept-anisotropy-analysis-of-porous-media-ii-conceptual-shortcomings-of-the-mil-tensor-definition-and-minkowski-tensors-as-an-alternative
#5
Michael A Klatt, Gerd E Schröder-Turk, Klaus Mecke
PURPOSE: Structure-property relations, which relate the shape of the microstructure to physical properties such as transport or mechanical properties, need sensitive measures of structure. What are suitable fabric tensors to quantify the shape of anisotropic heterogeneous materials? The mean intercept length is among the most commonly used characteristics of anisotropy in porous media, e. g., of trabecular bone in medical physics. Yet, in this series of two papers we demonstrate that it has conceptual shortcomings that limit the validity of its results...
April 20, 2017: Medical Physics
https://www.readbyqxmd.com/read/28425119/mean-intercept-anisotropy-analysis-of-porous-media-i-analytic-formulae-for-anisotropic-boolean-models
#6
Michael A Klatt, Gerd E Schröder-Turk, Klaus Mecke
PURPOSE: Structure-property relations, which relate the shape of the microstructure to physical properties such as transport or mechanical properties, need sensitive measures of structure. What are suitable fabric tensors to quantify the shape of anisotropic heterogeneous materials? The mean intercept length is among the most commonly used characteristics of anisotropy in porous media, for example, of trabecular bone in medical physics. METHODS: We analyze the orientation-biased Boolean model, a versatile stochastic model that represents microstructures as overlapping grains with an orientation bias towards a preferred direction...
April 20, 2017: Medical Physics
https://www.readbyqxmd.com/read/28423767/querying-ehrs-with-a-semantic-and-entity-oriented-query-language
#7
Romain Lelong, Lina Soualmia, Badisse Dahamna, Nicolas Griffon, Stéfan J Darmoni
While the digitization of medical documents has greatly expanded during the past decade, health information retrieval has become a great challenge to address many issues in medical research. Information retrieval in electronic health records (EHR) should also reduce the difficult tasks of manual information retrieval from records in paper format or computer. The aim of this article was to present the features of a semantic search engine implemented in EHRs. A flexible, scalable and entity-oriented query language tool is proposed...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28423747/establishment-of-requirements-and-methodology-for-the-development-and-implementation-of-greymatters-a-memory-clinic-information-system
#8
Archana Tapuria, Matt Evans, Vasa Curcin, Tony Austin, Nathan Lea, Dipak Kalra
INTRODUCTION: The aim of the paper is to establish the requirements and methodology for the development process of GreyMatters, a memory clinic system, outlining the conceptual, practical, technical and ethical challenges, and the experiences of capturing clinical and research oriented data along with the implementation of the system. METHODS: The methodology for development of the information system involved phases of requirements gathering, modeling and prototype creation, and 'bench testing' the prototype with experts...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28423062/filamentous-fungal-carbon-catabolite-repression-supports-metabolic-plasticity-and-stress-responses-essential-for-disease-progression
#9
Sarah R Beattie, Kenneth M K Mark, Arsa Thammahong, Laure Nicolas Annick Ries, Sourabh Dhingra, Alayna K Caffrey-Carr, Chao Cheng, Candice C Black, Paul Bowyer, Michael J Bromley, Joshua J Obar, Gustavo H Goldman, Robert A Cramer
Aspergillus fumigatus is responsible for a disproportionate number of invasive mycosis cases relative to other common filamentous fungi. While many fungal factors critical for infection establishment are known, genes essential for disease persistence and progression are ill defined. We propose that fungal factors that promote navigation of the rapidly changing nutrient and structural landscape characteristic of disease progression represent untapped clinically relevant therapeutic targets. To this end, we find that A...
April 19, 2017: PLoS Pathogens
https://www.readbyqxmd.com/read/28422566/content-uniformity-testing-for-stratified-samples-via-parametric-tolerance-interval-testing
#10
Steven Novick, Buffy Hudson-Curtis
Historically in the biopharmaceutical setting, USP <905>has been used to establish that a batch of drug product has acceptable content uniformity. More recently, alternative approaches, such as the two one-sided parametric tolerance interval test (PTI-TOST), have been proposed to establish content uniformity. Traditionally, the PTI-TOST is implemented as a sequential, two-tiered test, under the generally accepted assumption that the data are independently and identically distributed. Since the material is sequenced through the manufacturing process over a period of time, there are conceptually arguable locations within each batch, for instance: beginning, middle, and end...
April 19, 2017: Journal of Biopharmaceutical Statistics
https://www.readbyqxmd.com/read/28421356/the-technology-acceptance-model-for-resource-limited-settings-tam-rls-a-novel-framework-for-mobile-health-interventions-targeted-to-low-literacy-end-users-in-resource-limited-settings
#11
Jeffrey I Campbell, Isaac Aturinda, Evans Mwesigwa, Bridget Burns, Data Santorino, Jessica E Haberer, David R Bangsberg, Richard J Holden, Norma C Ware, Mark J Siedner
Although mobile health (mHealth) technologies have shown promise in improving clinical care in resource-limited settings (RLS), they are infrequently brought to scale. One limitation to the success of many mHealth interventions is inattention to end-user acceptability, which is an important predictor of technology adoption. We conducted in-depth interviews with 43 people living with HIV in rural Uganda who had participated in a clinical trial of a short messaging system (SMS)-based intervention designed to prompt return to clinic after an abnormal laboratory test...
April 18, 2017: AIDS and Behavior
https://www.readbyqxmd.com/read/28419864/how-to-be-a-good-neighbour-facilitation-and-competition-between-two-co-flowering-species
#12
Mohsen B Mesgaran, Juliette Bouhours, Mark A Lewis, Roger D Cousens
Empirical evidence suggests that co-flowering species can facilitate each other through shared pollinators. However, the extent to which one co-flowering species can relieve pollination limitation of another while simultaneously competing for abiotic resource has rarely been examined. Using a deterministic model we explored the demographic outcome for one ("focal") species of its co-occurrence with a species that shares pollinators and competes for both pollinator visitation and abiotic resources. In this paper we showed how the overall impact can be positive or negative, depending on the balance between enhanced fertilization versus increased competition...
April 15, 2017: Journal of Theoretical Biology
https://www.readbyqxmd.com/read/28419819/path-to-illness-intrusiveness-what-symptoms-impact-the-life-of-people-living-with-multiple-sclerosis
#13
Vanessa Bouchard, Pierre Duquette, Nancy E Mayo
OBJECTIVE: To determine the direct and indirect effects of physical, emotional, and cognitive impairments on illness intrusiveness in people with MS. DESIGN: Secondary analysis of a cross sectional data set collected in 2008 to identify gender differences in people living with MS. SETTING: Three MS clinics in the Greater Montréal region, Canada. PARTICIPANTS: A random sample of 135 women and 48 men diagnosed with Multiple Sclerosis after 1995 recruited and evaluated in 2008...
April 15, 2017: Archives of Physical Medicine and Rehabilitation
https://www.readbyqxmd.com/read/28418239/oxygen-vacancy-associated-surface-fenton-chemistry-surface-structure-dependent-hydroxyl-radicals-generation-and-substrate-dependent-reactivity
#14
Hao Li, Jian Shang, Zhiping Yang, Wenjuan Shen, Zhihui Ai, Lizhi Zhang
Understanding the chemistry of hydrogen peroxide (H2O2) decomposition and hydroxyl radicals (•OH) transformation on the surface molecular level is a great challenge for the application of heterogeneous Fenton system in the fields of chemistry, environmental and life science. We report in this study a conceptual oxygen vacancy associated surface Fenton system without any metal ions leaching, exhibiting unprecedented surface chemistry based on the oxygen vacancy of electron-donor nature for heterolytic H2O2 dissociation...
April 18, 2017: Environmental Science & Technology
https://www.readbyqxmd.com/read/28416675/integrin-extension-enables-ultrasensitive-regulation-by-cytoskeletal-force
#15
Jing Li, Timothy A Springer
Integrins undergo large-scale conformational changes upon activation. Signaling events driving integrin activation have previously been discussed conceptually, but not quantitatively. Here, recent measurements of the intrinsic ligand-binding affinity and free energy of each integrin conformational state on the cell surface, together with the length scales of conformational change, are used to quantitatively compare models of activation. We examine whether binding of cytoskeletal adaptors to integrin cytoplasmic domains is sufficient for activation or whether exertion of tensile force by the actin cytoskeleton across the integrin-ligand complex is also required...
April 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28415402/fattigation-platform-theranostic-nanoparticles-for-cancer-therapy
#16
Thao Truong-Dinh Tran, Phuong Ha-Lien Tran, Tae-Jong Yoon, Beom-Jin Lee
A new conceptual nanoparticle consisting of a silica-coated iron oxide magnetic core and a fattigation-based biocompatible shell with oleic acid and hydrophilic protein (gelatin). The prepared particle can be a useful theranostics platform material for diagnostic imaging and as a drug delivery system. Oleic acid and gelatin were conjugated on the silica-coated magnetic nanoparticle surface to provide three primary functionalities: 1) enhancing biocompatibility and solubility in aqueous solution and providing the ability to incorporate hydrophobic chemical drugs into the shell for delivery, 2) improving treatment-response magnetic monitoring as a diagnostic agent with low nanotoxicity, and 3) increasing anticancer efficacy owing to the controlled release of the incorporated drug in cells and in an animal model...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28415344/simple-noise-reduction-method-based-on-nonlinear-forecasting
#17
James P L Tan
Nonparametric detrending or noise reduction methods are often employed to separate trends from noisy time series when no satisfactory models exist to fit the data. However, conventional noise reduction methods depend on subjective choices of smoothing parameters. Here we present a simple multivariate noise reduction method based on available nonlinear forecasting techniques. These are in turn based on state-space reconstruction for which a strong theoretical justification exists for their use in nonparametric forecasting...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28415192/multiple-node-basin-stability-in-complex-dynamical-networks
#18
Chiranjit Mitra, Anshul Choudhary, Sudeshna Sinha, Jürgen Kurths, Reik V Donner
Dynamical entities interacting with each other on complex networks often exhibit multistability. The stability of a desired steady regime (e.g., a synchronized state) to large perturbations is critical in the operation of many real-world networked dynamical systems such as ecosystems, power grids, the human brain, etc. This necessitates the development of appropriate quantifiers of stability of multiple stable states of such systems. Motivated by the concept of basin stability (BS) [P. J. Menck et al., Nat...
March 2017: Physical Review. E
https://www.readbyqxmd.com/read/28414738/barriers-and-facilitators-for-men-to-attend-prenatal-care-and-obtain-hiv-voluntary-counseling-and-testing-in-brazil
#19
Nava Yeganeh, Mariana Simon, Deborah Mindry, Karin Nielsen-Saines, Maria Cristina Chaves, Breno Santos, Marineide Melo, Brenna Mendoza, Pamina Gorbach
BACKGROUND: Providing HIV voluntary counseling and testing (VCT) to men who attend their partner's prenatal care is an intervention with potential to reduce HIV transmission to women and infants during the vulnerable period of pregnancy. Little is known about the acceptability of this intervention in global settings outside of Africa. METHODS: We conducted in-depth qualitative interviews to evaluate potential barriers and facilitators to prenatal care attendance for HIV VCT with 20 men who did and 15 men who did not attend prenatal care with their partners at Hospital Conceiçao in Porto Alegre, Brazil...
2017: PloS One
https://www.readbyqxmd.com/read/28414070/the-unhealthy-attraction-of-plasmodium-vivax-to-reticulocytes-expressing-transferrin-receptor-1-cd71
#20
REVIEW
Benoit Malleret, Laurent Rénia, Bruce Russell
The majority of malaria parasite species prefer to invade reticulocytes, the most infamous being Plasmodium vivax. While the absence of an in vitro continuous culture method has hampered the study of P. vivax invasion biology, studies utilising primate models and ex vivo assays have provided some important insights. Most importantly, P. vivax merozoites have a strong preference for a subset of immature erythrocytes characterised by the expression of the transferrin receptor (CD71). This current opinion piece on P...
April 13, 2017: International Journal for Parasitology
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