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https://www.readbyqxmd.com/read/28212416/the-variability-of-multisensory-processes-of-natural-stimuli-in-human-and-non-human-primates-in-a-detection-task
#1
Cécile Juan, Céline Cappe, Baptiste Alric, Benoit Roby, Sophie Gilardeau, Pascal Barone, Pascal Girard
BACKGROUND: Behavioral studies in both human and animals generally converge to the dogma that multisensory integration improves reaction times (RTs) in comparison to unimodal stimulation. These multisensory effects depend on diverse conditions among which the most studied were the spatial and temporal congruences. Further, most of the studies are using relatively simple stimuli while in everyday life, we are confronted to a large variety of complex stimulations constantly changing our attentional focus over time, a modality switch that can impact on stimuli detection...
2017: PloS One
https://www.readbyqxmd.com/read/28212077/robust-guided-image-filtering-using-nonconvex-potentials
#2
Bumsub Ham, Minsu Cho, Jean Ponce
Filtering images using a guidance signal, a process called guided or joint image filtering, has been used in various tasks in computer vision and computational photography, particularly for noise reduction and joint upsampling. This uses an additional guidance signal as a structure prior, and transfers the structure of the guidance signal to an input image, restoring noisy or altered image structure. The main drawbacks of such a data-dependent framework are that it does not consider structural differences between guidance and input images, and that it is not robust to outliers...
February 14, 2017: IEEE Transactions on Pattern Analysis and Machine Intelligence
https://www.readbyqxmd.com/read/28211968/verse-guided-parallel-rf-excitations-using-dynamic-field-correction
#3
Mustafa Çavuşoğlu, Ronald Mooiweer, Klaas P Pruessmann, Shaihan J Malik
In parallel RF pulse design, peak RF magnitudes and specific absorption rate levels are critical concerns in the hardware and safety limits. The variable rate selective excitation (VERSE) method is an efficient technique to limit the peak RF power by applying a local-only RF and gradient waveform reshaping while retaining the on-resonance profile. The accuracy of the excitation performed by the VERSEd RF and gradient waveforms strictly depends on the performance of the employed hardware. Any deviation from the nominal gradient fields as a result of frequency dependent system imperfections violates the VERSE condition similarly to off-resonance effects, leading to significant excitation errors and the RF pulse not converging to the targeted peak RF power...
February 17, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28211896/profound-seasonal-shrinking-and-regrowth-of-the-ossified-braincase-in-phylogenetically-distant-mammals-with-similar-life-histories
#4
Dina K N Dechmann, Scott LaPoint, Christian Dullin, Moritz Hertel, Jan R E Taylor, Karol Zub, Martin Wikelski
Ontogenetic changes in skull shape and size are ubiquitous in altricial vertebrates, but typically unidirectional and minimal in full-grown animals. Red-toothed shrews exhibit a rare exception, where the shape, mass and size of the skull, brain, and several major organs, show significant bidirectional seasonal changes. We now show a similar but male-biased shrinking (16%) and regrowth (8%) in the standardized braincase depth of least weasels (Mustela nivalis). Juvenile weasels also exhibit a growth overshoot, followed by a shrinkage period lasting until the end of their first winter...
February 13, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28211577/genetic-dissection-of-adaptive-form-and-function-in-rapidly-speciating-cichlid-fishes
#5
Frederico Henning, Gonzalo Machado-Schiaffino, Lukas Baumgarten, Axel Meyer
Genes of major phenotypic effects and strong genetic correlations can facilitate adaptation, direct selective responses and potentially lead to phenotypic convergence. However, the preponderance of this type of genetic architecture in repeatedly-evolved adaptations remains unknown. Using hybrids between Haplochromis chilotes (thick-lipped) and H. nyererei (thin-lipped) we investigated the genetics underlying hypertrophied lips and elongated heads, traits that evolved repeatedly in cichlids. At least 25 loci of small-to-moderate and mainly additive effects were detected...
February 17, 2017: Evolution; International Journal of Organic Evolution
https://www.readbyqxmd.com/read/28211365/converging-biofabrication-and-organoid-technologies-the-next-frontier-in-hepatic-and-intestinal-tissue-engineering
#6
Kerstin Schneeberger, Bart Spee, Pedro Costa, Norman Sachs, Hans Clevers, Jos Malda
Adult tissue stem cells can form self-organizing 3D organoids in vitro. Organoids resemble small units of their organ of origin and have great potential for tissue engineering, as well as models of disease. However, current culture technology limits the size, architecture and complexity of organoids. Here, we review the establishment of intestinal and hepatic organoids and discuss how the convergence of organoids and biofabrication technologies can help overcome current limitations, and thereby further advance the translational application of organoids in tissue engineering and regenerative medicine...
February 17, 2017: Biofabrication
https://www.readbyqxmd.com/read/28211249/improving-the-interpretability-of-climate-landscape-metrics-an-ecological-risk-analysis-of-japan-s-marine-protected-areas
#7
Jorge García Molinos, Shintaro Takao, Naoki H Kumagai, Elvira S Poloczanska, Michael T Burrows, Masahiko Fujii, Hiroya Yamano
Conservation efforts strive to protect significant swaths of terrestrial, freshwater and marine ecosystems from a range of threats. As climate change becomes an increasing concern, these efforts must take into account how resilient protected spaces will be in the face of future drivers of change such as warming temperatures. Climate landscape metrics, which signal the spatial magnitude and direction of climate change, support a convenient initial assessment of potential threats to and opportunities within ecosystems to inform conservation and policy efforts where biological data are not available...
February 17, 2017: Global Change Biology
https://www.readbyqxmd.com/read/28211059/a-multipolar-approach-to-the-interatomic-covalent-interaction-energy
#8
Evelio Francisco, Daniel Menéndez Crespo, Aurora Costales, Ángel Martín Pendás
Interatomic exchange-correlation energies correspond to the covalent energetic contributions to an interatomic interaction in real space theories of the chemical bond, but their widespread use is severely limited due to their computationally intensive character. In the same way as the multipolar (mp) expansion is customary used in biomolecular modeling to approximate the classical Coulomb interaction between two charge densities ρA(r) and ρB(r), we examine in this work the mp approach to approximate the interatomic exchange-correlation (xc) energies of the Interacting Quantum Atoms method...
February 16, 2017: Journal of Computational Chemistry
https://www.readbyqxmd.com/read/28210999/computational-cognitive-modeling-of-the-temporal-dynamics-of-fatigue-from-sleep-loss
#9
Matthew M Walsh, Glenn Gunzelmann, Hans P A Van Dongen
Computational models have become common tools in psychology. They provide quantitative instantiations of theories that seek to explain the functioning of the human mind. In this paper, we focus on identifying deep theoretical similarities between two very different models. Both models are concerned with how fatigue from sleep loss impacts cognitive processing. The first is based on the diffusion model and posits that fatigue decreases the drift rate of the diffusion process. The second is based on the Adaptive Control of Thought - Rational (ACT-R) cognitive architecture and posits that fatigue decreases the utility of candidate actions leading to microlapses in cognitive processing...
February 16, 2017: Psychonomic Bulletin & Review
https://www.readbyqxmd.com/read/28210865/the-impact-of-melanoma-genetics-on-treatment-response-and-resistance-in-clinical-and-experimental-studies
#10
M Kunz, M Hölzel
Recent attempts to characterize the melanoma mutational landscape using high-throughput sequencing technologies have identified new genes and pathways involved in the molecular pathogenesis of melanoma. Apart from mutated BRAF, NRAS, and KIT, a series of new recurrently mutated candidate genes with impact on signaling pathways have been identified such as NF1, PTEN, IDH1, RAC1, ARID2, and TP53. Under targeted treatment using BRAF and MEK1/2 inhibitors either alone or in combination, a majority of patients experience recurrences, which are due to different genetic mechanisms such as gene amplifications of BRAF or NRAS, MEK1/2 and PI3K mutations...
February 16, 2017: Cancer Metastasis Reviews
https://www.readbyqxmd.com/read/28209470/measuring-self-care-in-patients-with-heart-failure-a-review-of-the-psychometric-properties-of-the-european-heart-failure-self-care-behaviour-scale-ehfscbs
#11
REVIEW
Natasa Sedlar, Gregor Socan, Jerneja Farkas, Jan Mårtensson, Anna Strömberg, Tiny Jaarsma, Mitja Lainscak
OBJECTIVE: The aim of this study was to review and evaluate the evidence related to psychometric properties of the European Heart Failure Self-Care Behaviour Scale (EHFScBS) that was developed and tested to measure health maintenance behaviours of heart failure (HF) patients and translated into several languages. METHODS: PRISMA guidelines were used to search major health databases (PubMed, Scopus and ScienceDirect), to identify relevant studies. A literature search was undertaken in November 2015...
February 6, 2017: Patient Education and Counseling
https://www.readbyqxmd.com/read/28209326/ethnobotany-phylogeny-and-omics-for-human-health-and-food-security
#12
Teresa Garnatje, Josep Peñuelas, Joan Vallès
Here, we propose a new term, 'ethnobotanical convergence', to refer to the similar uses for plants included in the same node of a phylogeny. This phylogenetic approach, together with the 'omics' revolution, shows how combining modern technologies with traditional ethnobotanical knowledge could be used to identify potential new applications of plants.
February 10, 2017: Trends in Plant Science
https://www.readbyqxmd.com/read/28209158/gene-regulatory-network-underlying-the-immortalization-of-epithelial-cells
#13
Luis Fernando Méndez-López, Jose Davila-Velderrain, Elisa Domínguez-Hüttinger, Christian Enríquez-Olguín, Juan Carlos Martínez-García, Elena R Alvarez-Buylla
BACKGROUND: Tumorigenic transformation of human epithelial cells in vitro has been described experimentally as the potential result of spontaneous immortalization. This process is characterized by a series of cell-state transitions, in which normal epithelial cells acquire first a senescent state which is later surpassed to attain a mesenchymal stem-like phenotype with a potentially tumorigenic behavior. In this paper we aim to provide a system-level mechanistic explanation to the emergence of these cell types, and to the time-ordered transition patterns that are common to neoplasias of epithelial origin...
February 16, 2017: BMC Systems Biology
https://www.readbyqxmd.com/read/28208786/policy-research-and-residents-perspectives-on-built-environments-implicated-in-heart-disease-a-concept-mapping-approach
#14
Ivana Stankov, Natasha J Howard, Mark Daniel, Margaret Cargo
An underrepresentation of stakeholder perspectives within urban health research arguably limits our understanding of what is a multi-dimensional and complex relationship between the built environment and health. By engaging a wide range of stakeholders using a participatory concept mapping approach, this study aimed to achieve a more holistic and nuanced understanding of the built environments shaping disease risk, specifically cardiometabolic risk (CMR). Moreover, this study aimed to ascertain the importance and changeability of identified environments through government action...
February 9, 2017: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/28208766/improved-omnidirectional-odometry-for-a-view-based-mapping-approach
#15
David Valiente, Arturo Gil, Óscar Reinoso, Miguel Juliá, Mathew Holloway
This work presents an improved visual odometry using omnidirectional images. The main purpose is to generate a reliable prior input which enhances the SLAM (Simultaneous Localization and Mapping) estimation tasks within the framework of navigation in mobile robotics, in detriment of the internal odometry data. Generally, standard SLAM approaches extensively use data such as the main prior input to localize the robot. They also tend to consider sensory data acquired with GPSs, lasers or digital cameras, as the more commonly acknowledged to re-estimate the solution...
February 9, 2017: Sensors
https://www.readbyqxmd.com/read/28208760/mdaral-a-multi-radio-version-for-the-daral-routing-algorithm
#16
Francisco José Estévez, José María Castillo-Secilla, Jesús González, Joaquín Olivares, Peter Glösekötter
Smart Cities are called to change the daily life of human beings. This concept permits improving the efficiency of our cities in several areas such as the use of water, energy consumption, waste treatment, and mobility both for people as well as vehicles throughout the city. This represents an interconnected scenario in which thousands of embedded devices need to work in a collaborative way both for sensing and modifying the environment properly. Under this scenario, the majority of devices will use wireless protocols for communicating among them, representing a challenge for optimizing the use of the electromagnetic spectrum...
February 9, 2017: Sensors
https://www.readbyqxmd.com/read/28208433/nonorthogonal-central-moments-based-lattice-boltzmann-scheme-in-three-dimensions
#17
Alessandro De Rosis
We present an alternative three-dimensional lattice Boltzmann collision operator consisting of a nonorthogonal basis of central moments. Our formulation is characterized by an intelligible derivation with a relatively simple and quite general implementation. It is successfully validated against several established, well-consolidated, well-defined benchmark problems, showing excellent properties in terms of accuracy and convergence. If compared to the adoption of the classical Bhatnagar-Gross-Krook operator, our model possesses superior stability...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28208413/friction-factor-for-aerosol-fractal-aggregates-over-the-entire-knudsen-range
#18
James Corson, George W Mulholland, Michael R Zachariah
We develop an approach for computing the hydrodynamic friction tensor and scalar friction coefficient for an aerosol fractal aggregate in the transition regime. Our approach involves solving the Bhatnagar-Gross-Krook equation for the velocity field around a sphere and using the velocity field to calculate the force on each primary sphere in the aggregate due to the presence of the other spheres. It is essentially an extension of Kirkwood-Riseman theory from the continuum flow regime to the entire Knudsen range (Knudsen number from 0...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28208323/upper-and-lower-critical-decay-exponents-of-ising-ferromagnets-with-long-range-interaction
#19
Toshiki Horita, Hidemaro Suwa, Synge Todo
We investigate the universality class of the finite-temperature phase transition of the two-dimensional Ising model with the algebraically decaying ferromagnetic long-range interaction, J_{ij}=|r[over ⃗]_{i}-r[over ⃗]_{j}|^{-(d+σ)}, where d (=2) is the dimension of the system and σ is the decay exponent, by means of the order-N cluster-algorithm Monte Carlo method. In particular, we focus on the upper and lower critical decay exponents, the boundaries between the mean-field-universality, intermediate, and short-range-universality regimes...
January 2017: Physical Review. E
https://www.readbyqxmd.com/read/28208086/measuring-of-quality-of-life-in-autoimmune-blistering-disorders-in-poland-validation-of-disease-specific-autoimmune-bullous-disease-quality-of-life-abqol-and-the-treatment-autoimmune-bullous-disease-quality-of-life-tabqol-questionnaires
#20
Agnieszka Kalinska-Bienias, Beata Jakubowska, Cezary Kowalewski, Dedee F Murrell, Katarzyna Wozniak
PURPOSE: Autoimmune bullous dermatoses (AIBD) are rare, severe diseases resulting from some antibodies activity against the different adhesion structures within the skin and/or mucosa. Few studies investigated quality of life (QOL) in AIBD by generic and dermatology-specific instruments, all reporting strong impact on QOL. Recently, disease-specific measurement tools have been developed: Autoimmune Bullous Disease Quality of Life (ABQOL) and Treatment of Autoimmune Bullous Disease Quality of Life (TABQOL) questionnaires...
February 13, 2017: Advances in Medical Sciences
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