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Information theory

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https://www.readbyqxmd.com/read/28339555/an-item-bank-for-abuse-of-prescription-pain-medication-from-the-patient-reported-outcomes-measurement-information-system-promis%C3%A2
#1
Paul A Pilkonis, Lan Yu, Nathan E Dodds, Kelly L Johnston, Suzanne M Lawrence, Thomas F Hilton, Dennis C Daley, Ashwin A Patkar, Dennis McCarty
Objective.:  There is a need to monitor patients receiving prescription opioids to detect possible signs of abuse. To address this need, we developed and calibrated an item bank for severity of abuse of prescription pain medication as part of the Patient-Reported Outcomes Measurement Information System (PROMIS ® ). Methods.:  Comprehensive literature searches yielded an initial bank of 5,310 items relevant to substance use and abuse, including abuse of prescription pain medication, from over 80 unique instruments...
October 8, 2016: Pain Medicine: the Official Journal of the American Academy of Pain Medicine
https://www.readbyqxmd.com/read/28339121/connecting-today-s-climates-to-future-analogs-to-facilitate-species-movement-under-climate-change
#2
Caitlin E Littlefield, Brad H McRae, Julia Michalak, Joshua J Lawler, Carlos Carroll
Increasing connectivity is an important strategy for facilitating species range shifts and maintaining biodiversity in the face of climate change. To date, however, few studies have included future climate projections in efforts to prioritize areas for increasing connectivity. Here, we identify key areas likely to facilitate climate-induced species movement across western North America. Using historical climate datasets and future climate projections, we mapped potential routes between current climates and their future analogs with a novel moving-window analysis based on electrical circuit theory...
March 24, 2017: Conservation Biology: the Journal of the Society for Conservation Biology
https://www.readbyqxmd.com/read/28338845/computational-psychiatry-and-the-challenge-of-schizophrenia
#3
John H Krystal, John D Murray, Adam M Chekroud, Philip R Corlett, Genevieve Yang, Xiao-Jing Wang, Alan Anticevic
Schizophrenia research is plagued by enormous challenges in integrating and analyzing large datasets and difficulties developing formal theories related to the etiology, pathophysiology, and treatment of this disorder. Computational psychiatry provides a path to enhance analyses of these large and complex datasets and to promote the development and refinement of formal models for features of this disorder. This presentation introduces the reader to the notion of computational psychiatry and describes discovery-oriented and theory-driven applications to schizophrenia involving machine learning, reinforcement learning theory, and biophysically-informed neural circuit models...
March 8, 2017: Schizophrenia Bulletin
https://www.readbyqxmd.com/read/28338233/unraveling-the-roles-of-orienting-and-inhibition-in-the-concealed-information-test
#4
Nathalie Klein Selle, Bruno Verschuere, Merel Kindt, Ewout Meijer, Gershon Ben-Shakhar
The Concealed Information Test (CIT) is a well-validated tool for physiological and behavioral detection of concealed knowledge. Two distinct theoretical frameworks have been proposed to explain the differential responses to the concealed critical items: orienting response theory versus arousal inhibition theory. klein Selle, Verschuere, Kindt, Meijer, and Ben-Shakhar (2016), however, argued for a response fractionation model and showed that, while the skin conductance reflects pure orienting, both the respiratory and heart rate measures reflect arousal inhibition...
April 2017: Psychophysiology
https://www.readbyqxmd.com/read/28338003/directional-phonon-suppression-function-as-a-tool-for-the-identification-of-ultralow-thermal-conductivity-materials
#5
Giuseppe Romano, Alexie M Kolpak
Boundary-engineering in nanostructures has the potential to dramatically impact the development of materials for high- efficiency conversion of thermal energy directly into electricity. In particular, nanostructuring of semiconductors can lead to strong suppression of heat transport with little degradation of electrical conductivity. Although this combination of material properties is promising for thermoelectric materials, it remains largely unexplored. In this work, we introduce a novel concept, the directional phonon suppression function, to unravel boundary-dominated heat transport in unprecedented detail...
March 24, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28337843/exploring-the-role-of-the-dental-hygienist-in-reducing-oral-health-disparities-in-canada-a-qualitative-study
#6
J Farmer, S Peressini, H P Lawrence
OBJECTIVES: Reducing oral health disparities has been an ongoing challenge in Canada with the largest burden of oral disease exhibited in vulnerable populations, including Aboriginal people, the elderly, rural and remote residents, and newcomers. Dental hygienists are a unique set of professionals who work with and within communities, who have the potential to act as key change agents for improving the oral health of these populations. The purpose of this qualitative study was to explore, from the dental hygiene perspective, the role of dental hygienists in reducing oral health disparities in Canada...
March 24, 2017: International Journal of Dental Hygiene
https://www.readbyqxmd.com/read/28337679/adsorption-of-mn-atom-on-pristine-and-defected-graphene-a-density-functional-theory-study
#7
V S Anithaa, R Shankar, S Vijayakumar
The functionalization of graphene with transition metals is of great interest due to its wide range of applications, such as hydrogen storage, spintronics, information storage, etc. Due to its magnetic property adsorption of Mn atom on graphene has a high consequence on the electronic properties of graphene. The increase in size of the graphene sheet with hydrogen termination has a high impact on the transformation of electronic properties of the graphene sheet. Hence in this work, we investigate the size as well as change in structural and electronic properties of pristine/defective graphene sheets on adsorption of Mn atom using density functional theory methods...
April 2017: Journal of Molecular Modeling
https://www.readbyqxmd.com/read/28337605/application-of-diet-theory-reveals-context-dependent-foraging-preferences-in-an-herbivorous-coral-reef-fish
#8
John Hanmer, J Wilson White, Joseph R Pawlik
Dietary preferences of grazers can drive spatial variability in top-down control of autotroph communities, because diet composition may depend on the relative availability of autotroph species. On Caribbean coral reefs, parrotfish grazing is important in limiting macroalgae, but parrotfish dietary preferences are poorly understood. We applied diet-switching analysis to quantify the foraging preferences of the redband parrotfish (Sparisoma aurofrenatum). At 12 Caribbean reefs, we observed 293 redband parrotfish in 5-min feeding bouts and quantified relative benthic algal cover using quadrats...
March 23, 2017: Oecologia
https://www.readbyqxmd.com/read/28337133/inferring-master-painters-esthetic-biases-from-the-statistics-of-portraits
#9
Hassan Aleem, Ivan Correa-Herran, Norberto M Grzywacz
The Processing Fluency Theory posits that the ease of sensory information processing in the brain facilitates esthetic pleasure. Accordingly, the theory would predict that master painters should display biases toward visual properties such as symmetry, balance, and moderate complexity. Have these biases been occurring and if so, have painters been optimizing these properties (fluency variables)? Here, we address these questions with statistics of portrait paintings from the Early Renaissance period. To do this, we first developed different computational measures for each of the aforementioned fluency variables...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28336989/meeting-and-greeting-in-the-clinical-setting-are-we-doing-what-patients-want
#10
A Davies-House, N Ball, C Balmer
Objective To determine how patients want to be greeted by clinicians on a first encounter in the clinical setting.Setting A UK dental teaching hospital in 2015/16.Materials and methods Data was collected prospectively via 450 patient questionnaires. The results were stratified by generational cohort and compared to assess if there was an association between patient preferences and the generational theory.Results Patients preferred to be greeted informally by their first name and didn't mind how the clinician introduced themselves or preferred them to use their first name also...
March 24, 2017: British Dental Journal
https://www.readbyqxmd.com/read/28336746/understanding-dutch-practice-nurses-adherence-to-evidence-based-smoking-cessation-guidelines-and-their-needs-for-web-based-adherence-support-results-from-semistructured-interviews
#11
D de Ruijter, E S Smit, H de Vries, L Goossens, C Hoving
OBJECTIVES: Practice nurses in general practices suboptimally adhere to smoking cessation guidelines. Since the effectiveness of their smoking cessation support is greatest when full adherence to these guidelines is achieved, interventions need to be developed to improve practice nurses' guideline adherence, for example, by tailoring their content to adherence determinants. However, the sociocognitive determinants explaining adherence have not yet been investigated. Therefore, this qualitative needs assessment aimed to explore practice nurses' current counselling practices, as well as their sociocognitive beliefs related to their smoking cessation guideline adherence and their needs regarding web-based adherence support...
March 22, 2017: BMJ Open
https://www.readbyqxmd.com/read/28336355/estimated-hiv-inter-test-interval-among-people-at-high-risk-for-hiv-infection-in-the-u-s
#12
Qian An, Ruiguang Song, Teresa J Finlayson, Cyprian Wejnert, Gabriela Paz-Bailey
INTRODUCTION: Knowing the HIV testing frequency and its temporal changes are central to evaluate public adherence to HIV testing recommendations and performance of HIV prevention programs. This study intended to estimate the mean HIV inter-test interval (ITI) and monitor its trends among men who have sex with men (MSM); people who inject drugs (PWID); and high-risk heterosexuals (HRH). METHODS: Using National HIV Behavioral Surveillance data collected during 2008-2015, this analysis estimated the mean HIV ITI for each year by race/ethnicity and age among MSM, PWID, and HRH who reported the most recent HIV test date...
March 20, 2017: American Journal of Preventive Medicine
https://www.readbyqxmd.com/read/28336240/what-s-the-evidence-self-assessment-implications-for-life-long-learning-in-emergency-medicine
#13
Margaret Wolff, Sally A Santen, Laura R Hopson, Robin R Hemphill, Susan E Farrell
BACKGROUND: The 2012 Academic Emergency Medicine Consensus Conference, "Education Research in Emergency Medicine: Opportunities, Challenges, and Strategies for Success" noted that emergency medicine (EM) educators often rely on theory and tradition when molding their approaches to teaching and learning, and called on the EM education community to advance the teaching of our specialty through the performance and application of research in teaching and assessment methods, cognitive function, and the effects of education interventions...
March 20, 2017: Journal of Emergency Medicine
https://www.readbyqxmd.com/read/28334991/frameworks-to-assess-health-systems-governance-a-systematic-review
#14
Thidar Pyone, Helen Smith, Nynke van den Broek
Governance of the health system is a relatively new concept and there are gaps in understanding what health system governance is and how it could be assessed. We conducted a systematic review of the literature to describe the concept of governance and the theories underpinning as applied to health systems; and to identify which frameworks are available and have been applied to assess health systems governance. Frameworks were reviewed to understand how the principles of governance might be operationalized at different levels of a health system...
March 3, 2017: Health Policy and Planning
https://www.readbyqxmd.com/read/28334882/decreased-integration-and-information-capacity-in-stroke-measured-by-whole-brain-models-of-resting-state-activity
#15
Mohit H Adhikari, Carl D Hacker, Josh S Siegel, Alessandra Griffa, Patric Hagmann, Gustavo Deco, Maurizio Corbetta
While several studies have shown that focal lesions affect the communication between structurally normal regions of the brain, and that these changes may correlate with behavioural deficits, their impact on brain's information processing capacity is currently unknown. Here we test the hypothesis that focal lesions decrease the brain's information processing capacity, of which changes in functional connectivity may be a measurable correlate. To measure processing capacity, we turned to whole brain computational modelling to estimate the integration and segregation of information in brain networks...
February 20, 2017: Brain: a Journal of Neurology
https://www.readbyqxmd.com/read/28334310/different-from-trees-more-than-metaphors-branching-silhouettes-corals-cacti-and-the-oaks
#16
János Podani
There has long been ambiguity in the use of the term tree in phylogenetic systematics, which is a continuous source of misinterpretation of evolutionary relationships. The basic problem is that while many trees with phylogenetic or evolutionary relevance, such as cladograms, are consistent with graph theory, tree-like visualization of phylogeny may also be done via other types of graphics, especially botanical (or literal) tree drawings. As a consequence, the meaning of such diagrams is not always clear: a given picture may have multiple interpretations in its different parts and two figures that look similar may actually carry quite different information...
March 11, 2017: Systematic Biology
https://www.readbyqxmd.com/read/28334304/livestock-grazing-shapes-the-vegetation-structure-and-subsequent-habitat-use-by-the-endangered-skipper-pyrgus-ruralis-lagunae-lepidoptera-hesperiidae
#17
Daniel A Marschalek, David K Faulkner, Douglas H Deutschman
Many species adapted to alpine and montane meadow ecosystems are at risk of extinction. The skipper Pyrgus ruralis lagunae Scott is a mountaintop butterfly restricted to San Diego County, CA, a federally listed endangered species, and is in imminent risk of extinction. Historically, P. r. lagunae was found in the Laguna and Palomar mountains. We did not detect the skipper in the Laguna Mountains, and the species has likely been extirpated from this area, which represents half of its historical range and is the type locality...
March 18, 2017: Environmental Entomology
https://www.readbyqxmd.com/read/28334051/dissecting-the-relationships-of-igg-subclasses-and-complements-in-membranous-lupus-nephritis-and-idiopathic-membranous-nephropathy
#18
Woong Na, Kijong Yi, Young Soo Song, Moon Hyang Park
Membranous lupus nephritis (MLN) and idiopathic membranous nephropathy (IMN) are kidney diseases with similar morphology, but distinct etiologies, both producing glomeruli with immune deposits. Immunoglobulins and complements, the main components of the deposits, can be detected by immunofluorescence (IF) microscopy. Previous researches characterized the immune deposits only individually, but not the interactions between them. To study these relationships we analyzed an IF profile of IgG subclasses and complements (IgG1, IgG2, IgG3, IgG4, C3, C1q, and C4) in 53 and 95 cases of biopsy-confirmed MLNs and IMNs, respectively, mainly using information theory and Bayesian networks...
2017: PloS One
https://www.readbyqxmd.com/read/28334018/development-of-an-evidence-evaluation-and-synthesis-system-for-drug-drug-interactions-and-its-application-to-a-systematic-review-of-hiv-and-malaria-co-infection
#19
Kay Seden, Sara Gibbons, Catia Marzolini, Jonathan M Schapiro, David M Burger, David J Back, Saye H Khoo
BACKGROUND: In all settings, there are challenges associated with safely treating patients with multimorbidity and polypharmacy. The need to characterise, understand and limit harms resulting from medication use is therefore increasingly important. Drug-drug interactions (DDIs) are prevalent in patients taking antiretrovirals (ARVs) and if unmanaged, may pose considerable risk to treatment outcome. One of the biggest challenges in preventing DDIs is the substantial gap between theory and clinical practice...
2017: PloS One
https://www.readbyqxmd.com/read/28333589/a-unified-theory-of-neuro-mri-data-shows-scale-free-nature-of-connectivity-modes
#20
Vitaly L Galinsky, Lawrence R Frank
A primary goal of many neuroimaging studies that use magnetic resonance imaging (MRI) is to deduce the structure-function relationships in the human brain using data from the three major neuro-MRI modalities: high-resolution anatomical, diffusion tensor imaging, and functional MRI. To date, the general procedure for analyzing these data is to combine the results derived independently from each of these modalities. In this article, we develop a new theoretical and computational approach for combining these different MRI modalities into a powerful and versatile framework that combines our recently developed methods for morphological shape analysis and segmentation, simultaneous local diffusion estimation and global tractography, and nonlinear and nongaussian spatial-temporal activation pattern classification and ranking, as well as our fast and accurate approach for nonlinear registration between modalities...
March 23, 2017: Neural Computation
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