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https://www.readbyqxmd.com/read/29785445/acoustically-enhanced-photodetection-by-a-black-phosphorus-mos-2-van-der-waals-heterojunction-p-n-diode
#1
Shijun Zheng, Enxiu Wu, Zhihong Feng, Rao Zhang, Yuan Xie, Yuanyuan Yu, Rui Zhang, Quanning Li, Jing Liu, Wei Pang, Hao Zhang, Daihua Zhang
We developed a new way to enhance the photoresponsivity of a van der Waals heterojunction p-n diode using surface acoustic waves (SAWs). The diode was constructed on top of a piezoelectric LiNbO3 substrate and composed of p-type black phosphorus (BP) and n-type molybdenum disulfide (MoS2) flakes that partly overlapped with each other. This layout facilitated the applied SAWs to rapidly drive carriers out of the depletion region. In this structural design, SAWs promoted the separation of photogenerated carriers, and thus greatly increased the photocurrent...
May 22, 2018: Nanoscale
https://www.readbyqxmd.com/read/29783871/eclerize-a-customized-force-directed-graph-drawing-algorithm-for-biological-graphs-with-ec-attributes
#2
Hasan Fehmi Danaci, Rengul Cetin-Atalay, Volkan Atalay
Visualizing large-scale data produced by the high throughput experiments as a biological graph leads to better understanding and analysis. This study describes a customized force-directed layout algorithm, EClerize, for biological graphs that represent pathways in which the nodes are associated with Enzyme Commission (EC) attributes. The nodes with the same EC class numbers are treated as members of the same cluster. Positions of nodes are then determined based on both the biological similarity and the connection structure...
March 26, 2018: Journal of Bioinformatics and Computational Biology
https://www.readbyqxmd.com/read/29780188/science-map-metaphors-a-comparison-of-network-versus-hexmap-based-visualizations
#3
Katy Börner, Adam H Simpson, Andreas Bueckle, Robert L Goldstone
Most maps of science use a network layout; few use a landscape metaphor. Human users are trained in reading geospatial maps, yet most have a hard time reading even simple networks. Prior work using general networks has shown that map-based visualizations increase recall accuracy of data. This paper reports the result of a comparison of two comparable renderings of the UCSD map of science that are: the original network layout and a novel hexmap that uses a landscape metaphor to layout the 554 subdisciplines grouped into 13 color-coded disciplines of science...
February 2018: Scientometrics
https://www.readbyqxmd.com/read/29776901/a-moderated-e-forum-for-adults-with-cardiovascular-disease-usability-study
#4
Rika Tanaka, Anita Banerjee, Jelena Surikova, Jacqueline Tracey, Ada Payne, Heather Ross, Robert Nolan
BACKGROUND: Self-care behaviors are commonly prescribed to manage both cardiovascular disease and hypertension to reduce modifiable risk factors and improve quality of life. Nevertheless, long-term adherence to self-care recommendations for cardiac patients has been problematic. In cardiac patients, moderated online forums have been found to be particularly useful in supporting maintenance of heart-healthy diet and fewer hospital visits. As such, we developed the e-Forum, a Web-based moderated forum designed to promote continued user engagement and long-term self-care adherence...
May 18, 2018: JMIR Human Factors
https://www.readbyqxmd.com/read/29776073/thermal-decay-of-a-metastable-state-influence-of-rescattering-on-the-quasistationary-dynamical-rate
#5
M V Chushnyakova, I I Gontchar
We study the effect of backscattering of the Brownian particles as they escape out of a metastable state overcoming the potential barrier. For this aim, we model this process numerically using the Langevin equations. This modeling is performed for the wide range of the friction constant covering both the energy and spatial diffusion regimes. It is shown how the influence of the descent stage on the quasistationary decay rate gradually disappears as the friction constant decreases. It is found that, in the energy diffusion regime, the rescattering absents and the descent stage does not influence the decay rate...
March 2018: Physical Review. E
https://www.readbyqxmd.com/read/29774810/procedural-module-flexible-cystoscopy
#6
Shoaib Safiullah, Daniel J Lama, Roshan Patel, Ralph V Clayman
INTRODUCTION: Cystoscopy is a basic urologic skill necessary for the endoscopic evaluation of the urethra and bladder. Presented is a step-by-step guide for flexible cystoscopy of the male and female patient. MATERIALS/METHODS: Routine flexible cystoscopy was performed on a male patient with a history of upper tract urothelial carcinoma and a female patient as part of a hematuria evaluation. The male patient was positioned supine, and the female patient frog-leg supine...
May 2018: Journal of Endourology
https://www.readbyqxmd.com/read/29774229/web-pages-what-can-you-see-in-a-single-fixation
#7
Ali Jahanian, Shaiyan Keshvari, Ruth Rosenholtz
Research in human vision suggests that in a single fixation, humans can extract a significant amount of information from a natural scene, e.g. the semantic category, spatial layout, and object identities. This ability is useful, for example, for quickly determining location, navigating around obstacles, detecting threats, and guiding eye movements to gather more information. In this paper, we ask a new question: What can we see at a glance at a web page - an artificial yet complex "real world" stimulus? Is it possible to notice the type of website, or where the relevant elements are, with only a glimpse? We find that observers, fixating at the center of a web page shown for only 120 milliseconds, are well above chance at classifying the page into one of ten categories...
2018: Cognitive Research: Principles and Implications
https://www.readbyqxmd.com/read/29773321/evaluating-scenarios-of-locations-and-capacities-for-vaccine-storage-in-nigeria
#8
Dor Hirsh Bar Gai, Zachary Graybill, Paule Voevodsky, Ekundayo Shittu
Many developing countries still face the prevalence of preventable childhood diseases because their vaccine supply chain systems are inadequate by design or structure to meet the needs of their populations. Currently, Nigeria is evaluating options in the redesign of the country's vaccine supply chain. Using Nigeria as a case study, the objective is to evaluate different regional supply chain scenarios to identify the cost minimizing optimal hub locations and storage capacities for doses of different vaccines to achieve a 100% fill rate...
May 14, 2018: Vaccine
https://www.readbyqxmd.com/read/29770186/conflict-tasks-of-different-types-divergently-affect-the-attentional-processing-of-gaze-and-arrow
#9
Lingxia Fan, Huan Yu, Xuemin Zhang, Qing Feng, Mengdan Sun, Mengsi Xu
The present study explored the attentional processing mechanisms of gaze and arrow cues in two different types of conflict tasks. In Experiment 1, participants performed a flanker task in which gaze and arrow cues were presented as central targets or bilateral distractors. The congruency between the direction of the target and the distractors was manipulated. Results showed that arrow distractors greatly interfered with the attentional processing of gaze, while the processing of arrow direction was immune to conflict from gaze distractors...
May 2018: I-Perception
https://www.readbyqxmd.com/read/29765607/internal-protein-motions-in-molecular-dynamics-simulations-of-bragg-and-diffuse-x-ray-scattering
#10
Michael E Wall
Molecular-dynamics (MD) simulations of Bragg and diffuse X-ray scattering provide a means of obtaining experimentally validated models of protein conformational ensembles. This paper shows that compared with a single periodic unit-cell model, the accuracy of simulating diffuse scattering is increased when the crystal is modeled as a periodic supercell consisting of a 2 × 2 × 2 layout of eight unit cells. The MD simulations capture the general dependence of correlations on the separation of atoms. There is substantial agreement between the simulated Bragg reflections and the crystal structure; there are local deviations, however, indicating both the limitation of using a single structure to model disordered regions of the protein and local deviations of the average structure away from the crystal structure...
March 1, 2018: IUCrJ
https://www.readbyqxmd.com/read/29760370/using-eye-tracking-technology-to-compare-the-effectiveness-of-malignant-hyperthermia-cognitive-aid-design
#11
Roderick King, Jaber Hanhan, T Kyle Harrison, Alex Kou, Steven K Howard, Lindsay K Borg, Cynthia Shum, Ankeet D Udani, Edward R Mariano
Background: Malignant hyperthermia is a rare but potentially fatal complication of anesthesia, and several different cognitive aids designed to facilitate a timely and accurate response to this crisis currently exist. Eye tracking technology can measure voluntary and involuntary eye movements, gaze fixation within an area of interest, and speed of visual response and has been used to a limited extent in anesthesiology. Methods: With eye tracking technology, we compared the accessibility of five malignant hyperthermia cognitive aids by collecting gaze data from twelve volunteer participants...
May 15, 2018: Korean Journal of Anesthesiology
https://www.readbyqxmd.com/read/29758479/move-to-learn-integrating-spatial-information-from-multiple-viewpoints
#12
Corinne A Holmes, Nora S Newcombe, Thomas F Shipley
Recalling a spatial layout from multiple orientations - spatial flexibility - is challenging, even when the global configuration can be viewed from a single vantage point, but more so when it must be viewed piecemeal. In the current study, we examined whether experiencing the transition between multiple viewpoints enhances spatial memory and flexible recall for a spatial configuration viewed simultaneously (Exp. 1) and sequentially (Exp. 2), whether the type of transition matters, and whether action provides an additional advantage over passive experience...
May 11, 2018: Cognition
https://www.readbyqxmd.com/read/29757944/dyslexia-and-fonts-is-a-specific-font-useful
#13
Christina Bachmann, Lauro Mengheri
Nowadays, several books published in different fonts advertised as being particularly suitable for dyslexics are available on the market. Our research aimed to assess the significance of a specific reading font especially designed for dyslexia, called EasyReading™. The performances of good readers and dyslexics were compared. Fourth grade primary school students (533 students in total) were assessed based on reading tasks presented with two different layouts: the popular Times New Roman and EasyReading™, in order to investigate whether children's performances were influenced by the fonts used...
May 14, 2018: Brain Sciences
https://www.readbyqxmd.com/read/29746576/graph-drawing-using-tabu-search-coupled-with-path-relinking
#14
Fadi K Dib, Peter Rodgers
Graph drawing, or the automatic layout of graphs, is a challenging problem. There are several search based methods for graph drawing which are based on optimizing an objective function which is formed from a weighted sum of multiple criteria. In this paper, we propose a new neighbourhood search method which uses a tabu search coupled with path relinking to optimize such objective functions for general graph layouts with undirected straight lines. To our knowledge, before our work, neither of these methods have been previously used in general multi-criteria graph drawing...
2018: PloS One
https://www.readbyqxmd.com/read/29746486/localizing-on-scalp-meg-sensors-using-an-array-of-magnetic-dipole-coils
#15
Christoph Pfeiffer, Lau M Andersen, Daniel Lundqvist, Matti Hämäläinen, Justin F Schneiderman, Robert Oostenveld
Accurate estimation of the neural activity underlying magnetoencephalography (MEG) signals requires co-registration i.e., determination of the position and orientation of the sensors with respect to the head. In modern MEG systems, an array of hundreds of low-Tc SQUID sensors is used to localize a set of small, magnetic dipole-like (head-position indicator, HPI) coils that are attached to the subject's head. With accurate prior knowledge of the positions and orientations of the sensors with respect to one another, the HPI coils can be localized with high precision, and thereby the positions of the sensors in relation to the head...
2018: PloS One
https://www.readbyqxmd.com/read/29744590/anatomical-organization-of-the-cerebrum-of-the-desert-locust-schistocerca-gregaria
#16
Joss von Hadeln, Vanessa Althaus, Linda Häger, Uwe Homberg
The desert locust Schistocerca gregaria is a major agricultural pest in North Africa and the Middle East. As such, it has been intensely studied, in particular with respect to population dynamics, sensory processing, feeding behavior flight and locomotor control, migratory behavior, and its neuroendocrine system. Being a long-range migratory species, neural mechanisms underlying sky compass orientation have been studied in detail. To further understand neuronal interactions in the brain of the locust, a deeper understanding of brain organization in this insect has become essential...
May 9, 2018: Cell and Tissue Research
https://www.readbyqxmd.com/read/29744469/recent-progress-on-biodegradable-materials-and-transient-electronics
#17
REVIEW
Rongfeng Li, Liu Wang, Deying Kong, Lan Yin
Transient electronics (or biodegradable electronics) is an emerging technology whose key characteristic is an ability to dissolve, resorb, or physically disappear in physiological environments in a controlled manner. Potential applications include eco-friendly sensors, temporary biomedical implants, and data-secure hardware. Biodegradable electronics built with water-soluble, biocompatible active and passive materials can provide multifunctional operations for diagnostic and therapeutic purposes, such as monitoring intracranial pressure, identifying neural networks, assisting wound healing process, etc...
September 2018: Bioactive Materials
https://www.readbyqxmd.com/read/29743225/ambulatory-antibiotic-stewardship-through-a-human-factors-engineering-approach-a-systematic-review
#18
Sara C Keller, Pranita D Tamma, Sara E Cosgrove, Melissa A Miller, Heather Sateia, Julie Szymczak, Ayse P Gurses, Jeffrey A Linder
INTRODUCTION: In the United States, most antibiotics are prescribed in ambulatory settings. Human factors engineering, which explores interactions between people and the place where they work, has successfully improved quality of care. However, human factors engineering models have not been explored to frame what is known about ambulatory antibiotic stewardship (AS) interventions and barriers and facilitators to their implementation. METHODS: We conducted a systematic review and searched OVID MEDLINE, Embase, Scopus, Web of Science, and CINAHL to identify controlled interventions and qualitative studies of ambulatory AS and determine whether and how they incorporated principles from a human factors engineering model, the Systems Engineering Initiative for Patient Safety 2...
May 2018: Journal of the American Board of Family Medicine: JABFM
https://www.readbyqxmd.com/read/29740603/stretchable-ultrasonic-transducer-arrays-for-three-dimensional-imaging-on-complex-surfaces
#19
Hongjie Hu, Xuan Zhu, Chonghe Wang, Lin Zhang, Xiaoshi Li, Seunghyun Lee, Zhenlong Huang, Ruimin Chen, Zeyu Chen, Chunfeng Wang, Yue Gu, Yimu Chen, Yusheng Lei, Tianjiao Zhang, NamHeon Kim, Yuxuan Guo, Yue Teng, Wenbo Zhou, Yang Li, Akihiro Nomoto, Simone Sternini, Qifa Zhou, Matt Pharr, Francesco Lanza di Scalea, Sheng Xu
Ultrasonic imaging has been implemented as a powerful tool for noninvasive subsurface inspections of both structural and biological media. Current ultrasound probes are rigid and bulky and cannot readily image through nonplanar three-dimensional (3D) surfaces. However, imaging through these complicated surfaces is vital because stress concentrations at geometrical discontinuities render these surfaces highly prone to defects. This study reports a stretchable ultrasound probe that can conform to and detect nonplanar complex surfaces...
March 2018: Science Advances
https://www.readbyqxmd.com/read/29740127/spatial-representations-of-the-viewer-s-surroundings
#20
Satoshi Shioiri, Masayuki Kobayashi, Kazumichi Matsumiya, Ichiro Kuriki
Spatial representation surrounding a viewer including outside the visual field is crucial for moving around the three-dimensional world. To obtain such spatial representations, we predict that there is a learning process that integrates visual inputs from different viewpoints covering all the 360° visual angles. We report here the learning effect of the spatial layouts on six displays arranged to surround the viewer, showing shortening of visual search time on surrounding layouts that are repeatedly used (contextual cueing effect)...
May 8, 2018: Scientific Reports
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