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Concept mapping

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https://www.readbyqxmd.com/read/29161026/conditional-reversible-work-coarse-grained-models-of-molecular-liquids-with-coulomb-electrostatics-a-proof-of-concept-study-on-weakly-polar-organic-molecules
#1
Gregor Deichmann, Nico F A van der Vegt
Scale bridging simulations of soft matter rely on the availability of transferable coarse-grained models. In systematic coarse-graining approaches, core principles of statistical mechanics are used to relate the coarse-grained models to the underlying molecular interactions. The conditional reversible work (CRW) method provides effective, nonbonded pair potentials by means of computing coupling free energies between mapped chemical groups. This method has so far been used almost exclusively for systems composed of apolar organic molecules, but additional challenges arise when developing coarse-grained models for polar molecules in which (long-ranged) electrostatic interactions are important...
November 21, 2017: Journal of Chemical Theory and Computation
https://www.readbyqxmd.com/read/29155963/generating-modelling-data-from-repeat-dose-toxicity-reports
#2
Oriol López-Massaguer, Kevin Pinto-Gil, Ferran Sanz, Alexander Amberg, Lennart T Anger, Manuela Stolte, Carlo Ravagli, Philippe Marc, Manuel Pastor
Over the past decades, pharmaceutical companies have conducted a large number of high quality in vivo repeat-dose toxicity (RDT) studies for regulatory purposes. As part of the eTOX project, a high number of these studies have been compiled and integrated into a database. This valuable resource can be queried directly, but it can be further exploited to build predictive models. As the studies were originally conducted to investigate the properties of individual compounds, the experimental conditions across the studies are highly heterogeneous...
November 16, 2017: Toxicological Sciences: An Official Journal of the Society of Toxicology
https://www.readbyqxmd.com/read/29155892/derivation-and-application-of-an-analytical-rock-displacement-solution-on-rectangular-cavern-wall-using-the-inverse-mapping-method
#3
Mingzhong Gao, Bin Yu, Zhiqiang Qiu, Xiangang Yin, Shengwei Li, Qiang Liu
Rectangular caverns are increasingly used in underground engineering projects, the failure mechanism of rectangular cavern wall rock is significantly different as a result of the cross-sectional shape and variations in wall stress distributions. However, the conventional computational method always results in a long-winded computational process and multiple displacement solutions of internal rectangular wall rock. This paper uses a Laurent series complex method to obtain a mapping function expression based on complex variable function theory and conformal transformation...
2017: PloS One
https://www.readbyqxmd.com/read/29143346/a-comparative-view-on-the-potential-acting-on-an-electron-in-a-molecule-and-the-electrostatic-potential-through-the-typical-halogen-bonds
#4
Ekaterina Bartashevich, Vladimir Tsirelson
This work considers the features of the electrostatic potential (ESP), and the potential acting on an electron in a molecule (PAEM) for the series of isolated dihalide molecules and for their molecular complexes. The joint analysis of these functions enriches the vision of atomic predispositions to the halogen bond formation and reveals details for their characterization. The account for the exchange-correlation interaction in PAEM retains the specific anisotropy of the ESP, which is commonly used for the halogen bonding explanation within σ-hole concept...
November 15, 2017: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/29136661/domain-learning-naming-game-for-color-categorization
#5
Doujie Li, Zhongyan Fan, Wallace K S Tang
Naming game simulates the evolution of vocabulary in a population of agents. Through pairwise interactions in the games, agents acquire a set of vocabulary in their memory for object naming. The existing model confines to a one-to-one mapping between a name and an object. Focus is usually put onto name consensus in the population rather than knowledge learning in agents, and hence simple learning model is usually adopted. However, the cognition system of human being is much more complex and knowledge is usually presented in a complicated form...
2017: PloS One
https://www.readbyqxmd.com/read/29136158/corrigendumto-identifying-multi-level-culturally-appropriate-smoking-cessation-strategies-for-aboriginal-health-staff-a-concept-mapping-approach
#6
Anna P Dawson, Margaret Cargo, Harold Stewart, Alwin Chong, Mark Daniel
No abstract text is available yet for this article.
November 9, 2017: Health Education Research
https://www.readbyqxmd.com/read/29131760/deep-learning-a-primer-for-radiologists
#7
Gabriel Chartrand, Phillip M Cheng, Eugene Vorontsov, Michal Drozdzal, Simon Turcotte, Christopher J Pal, Samuel Kadoury, An Tang
Deep learning is a class of machine learning methods that are gaining success and attracting interest in many domains, including computer vision, speech recognition, natural language processing, and playing games. Deep learning methods produce a mapping from raw inputs to desired outputs (eg, image classes). Unlike traditional machine learning methods, which require hand-engineered feature extraction from inputs, deep learning methods learn these features directly from data. With the advent of large datasets and increased computing power, these methods can produce models with exceptional performance...
November 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/29126423/the-many-meanings-of-evidence-a-comparative-analysis-of-the-forms-and-roles-of-evidence-within-three-health-policy-processes-in-cambodia
#8
Helen Walls, Marco Liverani, Kannarath Chheng, Justin Parkhurst
BACKGROUND: Discussions within the health community routinely emphasise the importance of evidence in informing policy formulation and implementation. Much of the support for the evidence-based policy movement draws from concern that policy decisions are often based on inadequate engagement with high-quality evidence. In many such discussions, evidence is treated as differing only in quality, and assumed to improve decisions if it can only be used more. In contrast, political science scholars have described this as an overly simplistic view of the policy-making process, noting that research 'use' can mean a variety of things and relies on nuanced aspects of political systems...
November 10, 2017: Health Research Policy and Systems
https://www.readbyqxmd.com/read/29122188/identifying-a-practice-based-implementation-framework-for-sustainable-interventions-for-improving-the-evolving-working-environment-hitting-the-moving-target-framework
#9
Helene Højberg, Charlotte Diana Nørregaard Rasmussen, Richard H Osborne, Marie Birk Jørgensen
Our aim was to identify implementation components for sustainable working environment interventions in the nursing assistant sector to generate a framework to optimize the implementation of workplace improvement initiatives. The implementation framework was informed by: 1) an industry advisory group, 2) interviews with key stakeholder, 3) concept mapping workshops, and 4) an e-mail survey. Thirty five stakeholders were interviewed and contributed in the concept mapping workshops. Eleven implementation components were derived across four domains: 1) A supportive organizational platform, 2) An engaged workplace with mutual goals, 3) The intervention is sustainably fitted to the workplace, and 4) the intervention is an attractive choice...
February 2018: Applied Ergonomics
https://www.readbyqxmd.com/read/29121859/alterations-in-pgc1%C3%AE-expression-levels-are-involved-in-colorectal-cancer-risk-a-qualitative-systematic-review
#10
Jéssica Alonso-Molero, Carmen González-Donquiles, Tania Fernández-Villa, Fernanda de Souza-Teixeira, Laura Vilorio-Marqués, Antonio J Molina, Vicente Martín
BACKGROUND: Colorectal cancer (CRC) is a major global public health problem and the second leading cause of cancer-related death. Mitochondrial dysfunction has long been suspected to be involved in this type of tumorigenesis, as supported by an accumulating body of research evidence. However, little is known about how mitochondrial alterations contribute to tumorigenesis. Mitochondrial biogenesis is a fundamental cellular process required to maintain functional mitochondria and as an adaptive mechanism in response to changing energy requirements...
November 9, 2017: BMC Cancer
https://www.readbyqxmd.com/read/29115995/developing-a-systems-based-framework-of-the-factors-influencing-dietary-and-physical-activity-behaviours-in-ethnic-minority-populations-living-in-europe-a-dedipac-study
#11
Michelle Holdsworth, Mary Nicolaou, Lars Jørun Langøien, Hibbah Araba Osei-Kwasi, Sebastien F M Chastin, F Marijn Stok, Laura Capranica, Nanna Lien, Laura Terragni, Pablo Monsivais, Mario Mazzocchi, Lea Maes, Gun Roos, Caroline Mejean, Katie Powell, Karien Stronks
BACKGROUND: Some ethnic minority populations have a higher risk of non-communicable diseases than the majority European population. Diet and physical activity behaviours contribute to this risk, shaped by a system of inter-related factors. This study mapped a systems-based framework of the factors influencing dietary and physical activity behaviours in ethnic minority populations living in Europe, to inform research prioritisation and intervention development. METHODS: A concept mapping approach guided by systems thinking was used: i...
November 7, 2017: International Journal of Behavioral Nutrition and Physical Activity
https://www.readbyqxmd.com/read/29113925/the-24-7-approach-to-promoting-optimal-welfare-for-captive-wild-animals
#12
Sabrina Brando, Hannah M Buchanan-Smith
We have an ethical responsibility to provide captive animals with environments that allow them to experience good welfare. Husbandry activities are often scheduled for the convenience of care staff working within the constraints of the facility, rather than considering the biological and psychological requirements of the animals themselves. The animal welfare 24/7 across the lifespan concept provides a holistic framework to map features of the animal's life cycle, taking into account their natural history, in relation to variations in the captive environment, across day and night, weekdays, weekends, and seasons...
November 4, 2017: Behavioural Processes
https://www.readbyqxmd.com/read/29113073/an-ontology-based-reasoning-framework-for-querying-satellite-images-for-disaster-monitoring
#13
Marjan Alirezaie, Andrey Kiselev, Martin Längkvist, Franziska Klügl, Amy Loutfi
This paper presents a framework in which satellite images are classified and augmented with additional semantic information to enable queries about what can be found on the map at a particular location, but also about paths that can be taken. This is achieved by a reasoning framework based on qualitative spatial reasoning that is able to find answers to high level queries that may vary on the current situation. This framework called SemCityMap, provides the full pipeline from enriching the raw image data with rudimentary labels to the integration of a knowledge representation and reasoning methods to user interfaces for high level querying...
November 5, 2017: Sensors
https://www.readbyqxmd.com/read/29106933/prediction-of-host-pathogen-interactions-for-helicobacter-pylori-by-interface-mimicry-and-implications-to-gastric-cancer
#14
Emine Guven-Maiorov, Chung-Jung Tsai, Buyong Ma, Ruth Nussinov
There is a strong correlation between some pathogens and certain cancer types. One example is Helicobacter pylori and gastric cancer. Exactly how they contribute to host tumorigenesis is however a mystery. Pathogens often interact with the host through proteins. To subvert defense, they may mimic host proteins at the sequence, structure, motif or interface levels. Interface similarity permits pathogen proteins to compete with those of the host for a target protein, and thereby alter the host signaling. Detection of host-pathogen interactions (HPIs) and mapping the re-wired superorganism HPI network - with structural details - can provide unprecedented clues to the underlying mechanisms and help therapeutics...
October 26, 2017: Journal of Molecular Biology
https://www.readbyqxmd.com/read/29106742/density-weighted-concentric-circle-trajectories-for-high-resolution-brain-magnetic-resonance-spectroscopic-imaging-at-7t
#15
Lukas Hingerl, Wolfgang Bogner, Philipp Moser, Michal Považan, Gilbert Hangel, Eva Heckova, Stephan Gruber, Siegfried Trattnig, Bernhard Strasser
PURPOSE: Full-slice magnetic resonance spectroscopic imaging at ≥7 T is especially vulnerable to lipid contaminations arising from regions close to the skull. This contamination can be mitigated by improving the point spread function via higher spatial resolution sampling and k-space filtering, but this prolongs scan times and reduces the signal-to-noise ratio (SNR) efficiency. Currently applied parallel imaging methods accelerate magnetic resonance spectroscopic imaging scans at 7T, but increase lipid artifacts and lower SNR-efficiency further...
November 6, 2017: Magnetic Resonance in Medicine: Official Journal of the Society of Magnetic Resonance in Medicine
https://www.readbyqxmd.com/read/29104705/three-kinds-of-nonconceptual-seeing-as
#16
Christopher Gauker
It is commonly supposed that perceptual representations in some way embed concepts and that this embedding accounts for the phenomenon of seeing-as. But there are good reasons, which will be reviewed here, to doubt that perceptions embed concepts. The alternative is to suppose that perceptions are marks in a perceptual similarity space that map into locations in an objective quality space. From this point of view, there are at least three sorts of seeing-as. First, in cases of ambiguity resolution (such as the duck-rabbit), the schematicity of the figure leaves us with a choice as to where in perceptual similarity space to place a mark (closer to the marks that represent rabbits or closer to the marks that represent ducks)...
2017: Review of Philosophy and Psychology
https://www.readbyqxmd.com/read/29103115/perspectives-on-impacts-of-water-quality-on-agriculture-and-community-well-being-a-key-informant-study-from-sri-lanka
#17
Bhadranie Thoradeniya, Uthpala Pinto, Basant Maheshwari
Integrated management of water quality is critical for sustaining food production and achieving overall well-being of a community. Further, understanding people's perceptions and engagement can play an important role in achieving water and food security. The main aim of this study was to investigate the perspectives of community and other stakeholders as to how water quality impacts on agriculture, livelihood and community well-being within rural farming communities of two dry zone districts of Sri Lanka. The study adopted 'key informant interviews' as the methodology to investigate community and other stakeholder perspectives to collect primary data over a period of four months...
November 4, 2017: Environmental Science and Pollution Research International
https://www.readbyqxmd.com/read/29102143/farm-specific-economic-value-of-automatic-lameness-detection-systems-in-dairy-cattle-from-concepts-to-operational-simulations
#18
Tim Van De Gucht, Wouter Saeys, Jef Van Meensel, Annelies Van Nuffel, Jurgen Vangeyte, Ludwig Lauwers
Although prototypes of automatic lameness detection systems for dairy cattle exist, information about their economic value is lacking. In this paper, a conceptual and operational framework for simulating the farm-specific economic value of automatic lameness detection systems was developed and tested on 4 system types: walkover pressure plates, walkover pressure mats, camera systems, and accelerometers. The conceptual framework maps essential factors that determine economic value (e.g., lameness prevalence, incidence and duration, lameness costs, detection performance, and their relationships)...
October 25, 2017: Journal of Dairy Science
https://www.readbyqxmd.com/read/29100117/csp-tsm-optimizing-the-performance-of-riemannian-tangent-space-mapping-using-common-spatial-pattern-for-mi-bci
#19
Shiu Kumar, Kabir Mamun, Alok Sharma
BACKGROUND: Classification of electroencephalography (EEG) signals for motor imagery based brain computer interface (MI-BCI) is an exigent task and common spatial pattern (CSP) has been extensively explored for this purpose. In this work, we focused on developing a new framework for classification of EEG signals for MI-BCI. METHOD: We propose a single band CSP framework for MI-BCI that utilizes the concept of tangent space mapping (TSM) in the manifold of covariance matrices...
October 24, 2017: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29098143/architecture-and-prototypical-implementation-of-a-semantic-querying-system-for-big-earth-observation-image-bases
#20
Dirk Tiede, Andrea Baraldi, Martin Sudmanns, Mariana Belgiu, Stefan Lang
Spatiotemporal analytics of multi-source Earth observation (EO) big data is a pre-condition for semantic content-based image retrieval (SCBIR). As a proof of concept, an innovative EO semantic querying (EO-SQ) subsystem was designed and prototypically implemented in series with an EO image understanding (EO-IU) subsystem. The EO-IU subsystem is automatically generating ESA Level 2 products (scene classification map, up to basic land cover units) from optical satellite data. The EO-SQ subsystem comprises a graphical user interface (GUI) and an array database embedded in a client server model...
2017: Eur J Remote Sens
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