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https://www.readbyqxmd.com/read/28822210/evaluation-of-the-association-between-disaster-training-and-confidence-in-disaster-response-among-graduate-medical-trainees-a-cross-sectional-study
#1
Andrew Grock, Adam R Aluisio, Elizabeth Abram, Patricia Roblin, Bonnie Arquilla
OBJECTIVE: Disasters by definition overwhelm the resources of a hospital and may require a response from a range of practitioners. Disaster training is part of emergency medicine (EM) resident curricula, but less emphasized in other training programs. This study aimed to compare disaster educational training and confidence levels among resident trainees from multiple specialties. DESIGN: A structured questionnaire assessed graduate medical training in disaster education and self-perceived confidence in disaster situations...
January 2017: American Journal of Disaster Medicine
https://www.readbyqxmd.com/read/28820890/history-based-forward-and-feedback-mechanism-in-cooperative-spectrum-sensing-including-malicious-users-in-cognitive-radio-network
#2
Noor Gul, Ijaz Mansoor Qureshi, Adnan Omar, Atif Elahi, Sajjad Khan
In cognitive radio communication, spectrum sensing plays a vital role in sensing the existence of the primary user (PU). The sensing performance is badly affected by fading and shadowing in case of single secondary user(SU). To overcome this issue, cooperative spectrum sensing (CSS) is proposed. Although the reliability of the system is improved with cooperation but existence of malicious user (MU) in the CSS deteriorates the performance. In this work, we consider the Kullback-Leibler (KL) divergence method for minimizing spectrum sensing data falsification (SSDF) attack...
2017: PloS One
https://www.readbyqxmd.com/read/28820594/on-the-restrained-proton-indicator-in-combined-quantum-mechanics-molecular-mechanics-dynamics-simulations-of-proton-transfer-through-a-carbon-nanotube
#3
Adam W Duster, Hai Lin
Recently, a collective variable "proton indicator" was purposed for tracking an excess proton solvated in bulk water in molecular dynamics simulations. In this work, we demonstrate the feasibility of utilizing the position of this proton indicator as a reaction coordinate to model an excess proton migrating through a hydrophobic carbon nanotube in combined quantum-mechanics/molecular-mechanics simulations. Our results indicate that applying a harmonic restraint to the proton indicator in the bulk solvent near the nanotube pore entrance leads to the recruitment of water molecules into the pore...
August 18, 2017: Journal of Physical Chemistry. B
https://www.readbyqxmd.com/read/28817473/scaffolding-interprofessional-education-unfolding-case-studies-virtual-world-simulations-and-patient-centered-care
#4
Sharon Strang Zook, Linda J Hulton, Carol C Dudding, Anne L Stewart, Amy C Graham
Fragmentation of health care negatively impacts quality; one of the contributing factors may be ineffective collaboration among health care professionals. This article describes the implementation of an interprofessional education curriculum for graduate students enrolled in nursing, psychology, and speech-language pathology programs. Over 3 semesters, students engaged in interprofessional collaboration modules, unfolding case studies, virtual simulation, and shared case planning experiences. The curriculum's impact on students' attitudes and values toward interprofessional collaborative practice was measured...
August 16, 2017: Nurse Educator
https://www.readbyqxmd.com/read/28817195/vertical-off-centering-affects-organ-dose-in-chest-ct-evidence-from-monte-carlo-simulations-in-anthropomorphic-phantoms
#5
Natalia Saltybaeva, Hatem Alkadhi
PURPOSE: The objective of our study was to assess the effect of patient vertical off-centering on organ dose in chest CT with tube current modulation. METHODS: For this purpose, anthropomorphic phantoms representing adult male, female and overweight male were scanned on 192-slice CT scanner at eleven different vertical positions (maximal off-centering ± 5 cm). Monte Carlo simulations were performed for each of the investigated setup, using tube current values extracted from the raw data, in order to obtain 3D dose distributions...
August 17, 2017: Medical Physics
https://www.readbyqxmd.com/read/28816680/admm-based-algorithm-for-training-fault-tolerant-rbf-networks-and-selecting-centers
#6
Hao Wang, Ruibin Feng, Zi-Fa Han, Chi-Sing Leung
In the training stage of radial basis function (RBF) networks, we need to select some suitable RBF centers first. However, many existing center selection algorithms were designed for the fault-free situation. This brief develops a fault tolerant algorithm that trains an RBF network and selects the RBF centers simultaneously. We first select all the input vectors from the training set as the RBF centers. Afterward, we define the corresponding fault tolerant objective function. We then add an ℓ₁-norm term into the objective function...
August 15, 2017: IEEE Transactions on Neural Networks and Learning Systems
https://www.readbyqxmd.com/read/28816661/a-3d-reconstruction-strategy-of-vehicle-outline-based-on-single-pass-single-polarization-csar-data
#7
Leping Chen, Daoxiang An, Xiaotao Huang, Zhimin Zhou
In the last few years, interest in circular synthetic aperture radar (CSAR) acquisitions has arisen as a consequence of the potential achievement of three-dimensional (3D) reconstructions over 360° azimuth angle variation. In real-world scenarios full 3D reconstructions of arbitrary targets need multi-pass data, which makes the processing complex, money-consuming and time-expending. In this paper, we propose a processing strategy for the 3D reconstruction of vehicle, which can avoid using multi-pass data by introducing a priori information of vehicle's shape...
August 14, 2017: IEEE Transactions on Image Processing: a Publication of the IEEE Signal Processing Society
https://www.readbyqxmd.com/read/28816179/embedded-atom-method-potential-for-modeling-hydrogen-and-hydrogen-defect-interaction-in-tungsten
#8
Li-Fang Wang, Xiaolin Shu, Guang-Hong Lu, Fei Gao
An embedded-atom method potential has been developed for modeling hydrogen in body-centered-cubic (bcc) tungsten by fitting to an extensive database of density functional theory (DFT) calculations. Comprehensive evaluations of the new potential are conducted by comparing various hydrogen properties with DFT calculations and available experimental data, as well as all the other tungsten-hydrogen potentials. The new potential accurately reproduces the point defect properties of hydrogen, the interaction among hydrogen atoms, the interplay between hydrogen and a monovacancy, and the thermal diffusion of hydrogen in tungsten...
August 17, 2017: Journal of Physics. Condensed Matter: An Institute of Physics Journal
https://www.readbyqxmd.com/read/28816136/the-impact-of-music-therapy-on-anxiety-in%C3%A2-cancer-patients-undergoing-simulation-for-radiation-therapy
#9
Andrew Rossetti, Manjeet Chadha, B Nelson Torres, Jae K Lee, Donald Hylton, Joanne V Loewy, Louis B Harrison
PURPOSE: Radiation therapy (RT) is associated with high stress levels. The role of music therapy (MT) for patients receiving RT is not well described. This study evaluates the impact of MT on anxiety and distress during simulation in patients with newly diagnosed head and neck or breast cancer. METHODS AND MATERIALS: This institutional review board-approved randomized trial of MT versus no MT at the time of simulation included the pre-State-Trait Anxiety Inventory (STAI-S Anxiety) questionnaire and Symptom Distress Thermometer (SDT)...
September 1, 2017: International Journal of Radiation Oncology, Biology, Physics
https://www.readbyqxmd.com/read/28815609/the-academic-practice-gap-strategies-for-an-enduring-problem
#10
C L Huston, B Phillips, P Jeffries, C Todero, J Rich, P Knecht, S Sommer, M P Lewis
The academic-practice gap in nursing is well documented. Academe is criticized for producing nurses insufficiently prepared to fully participate in patient care. Practice settings are criticized for having unrealistic expectations of new graduates. This article is based on a review of the literature and an exploration of contemporary practices used to bridge academic and practice partnerships. Differences in outcome expectations for new graduates between academe and practice are outlined and consequences of the gap for new graduates, patients, and employers are discussed...
August 16, 2017: Nursing Forum
https://www.readbyqxmd.com/read/28814837/simulating-clinical-trial-visits-yields-patient-insights-into-study-design-and-recruitment
#11
S Sam Lim, Alan J Kivitz, Doug McKinnell, M Edward Pierson, Faye S O'Brien
PURPOSE: We elicited patient experiences from clinical trial simulations to aid in future trial development and to improve patient recruitment and retention. PATIENTS AND METHODS: Two simulations of draft Phase II and Phase III anifrolumab studies for systemic lupus erythematosus (SLE)/lupus nephritis (LN) were performed involving African-American patients from Grady Hospital, an indigent care hospital in Atlanta, GA, USA, and white patients from Altoona Arthritis and Osteoporosis Center in Altoona, PA, USA...
2017: Patient Preference and Adherence
https://www.readbyqxmd.com/read/28814528/physician-training-protocol-within-the-web-intrasaccular-therapy-web-it-study
#12
Adam Arthur, Daniel Hoit, Alexander Coon, Josser E Delgado Almandoz, Lucas Elijovich, Saruhan Cekirge, David Fiorella
INTRODUCTION: The WEB Intra-saccular Therapy (WEB-IT) trial is an investigational device exemption study to demonstrate the safety and effectiveness of the WEB device for the treatment of wide-neck bifurcation aneurysms. The neurovascular replicator (Vascular Simulations, Stony Brook, New York, USA) creates a physical environment that replicates patient-specific neurovascular anatomy and hemodynamic physiology, and allows devices to be implanted under fluoroscopic guidance. OBJECTIVE: To report the results of a unique neurovascular replicator-based training program, which was incorporated into the WEB-IT study to optimize technical performance and patient safety...
August 16, 2017: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/28813464/representation-of-three-dimensional-space-in-the-auditory-cortex-of-the-echolocating-bat-p-discolor
#13
Wolfgang Greiter, Uwe Firzlaff
The auditory cortex is an essential center for sound localization. In echolocating bats, combination sensitive neurons tuned to specific delays between call emission and echo perception represent target distance. In many bats, these neurons are organized as a chronotopically organized map of echo delay. However, it is still unclear to what extend these neurons can process directional information and thereby form a three-dimensional representation of space. We investigated the representation of three-dimensional space in the auditory cortex of Phyllostomus discolor...
2017: PloS One
https://www.readbyqxmd.com/read/28813029/joint-mobile-data-collection-and-wireless-energy-transfer-in-wireless-rechargeable-sensor-networks
#14
Ping Zhong, Ya-Ting Li, Wei-Rong Liu, Gui-Hua Duan, Ying-Wen Chen, Neal Xiong
In wireless rechargeable sensor networks (WRSNs), there is a way to use mobile vehicles to charge node and collect data. It is a rational pattern to use two types of vehicles, one is for energy charging, and the other is for data collecting. These two types of vehicles, data collection vehicles (DCVs) and wireless charging vehicles (WCVs), are employed to achieve high efficiency in both data gathering and energy consumption. To handle the complex scheduling problem of multiple vehicles in large-scale networks, a twice-partition algorithm based on center points is proposed to divide the network into several parts...
August 16, 2017: Sensors
https://www.readbyqxmd.com/read/28810963/treating-decompression-sickness-military-flight-simulation-site-community-hospital-partnership
#15
Whitney C Rhodes, George Hertner, Robert Price, Lani Finck, Claudia Temmer, Tracy Cushing, Kathleen Flarity
BACKGROUND: High-altitude flight simulation familiarizes military trainees with the symptoms of hypoxia to prepare them for emergency situations. Decompression sickness (DCS) can occur as a result of these simulations. In cases when ground-level supplemental oxygen does not resolve symptoms, hyperbaric oxygen (HBO) therapy is indicated. Many military hyperbaric chambers have been closed because of cost reductions, necessitating partnerships with community hospitals to ensure access to treatment...
July 2017: Military Medicine
https://www.readbyqxmd.com/read/28810784/molecular-simulation-of-homogeneous-crystal-nucleation-of-ab2-solid-phase-from-a-binary-hard-sphere-mixture
#16
Praveen Kumar Bommineni, Sudeep N Punnathanam
Co-crystal formation from fluid-mixtures is quite common in a large number of systems. The simplest systems that show co-crystal (also called substitutionally ordered solids) formation are binary hard sphere mixtures. In this work, we study the nucleation of AB2 type solid compounds using Monte Carlo molecular simulations in binary hard sphere mixtures with the size ratio of 0.55. The conditions chosen for the study lie in the region where nucleation of an AB2 type solid competes with that of a pure A solid with a face-centered-cubic structure...
August 14, 2017: Journal of Chemical Physics
https://www.readbyqxmd.com/read/28810729/thermal-stability-of-organic-monolayers-grafted-to-si-111-insights-from-reaxff-reactive-molecular-dynamics-simulations
#17
Federico A Soria, Weiwei Zhang, Adri C T van Duin, Eduardo Martin Patrito
We used the ReaxFF reactive molecular dynamics simulations to investigate the chemical mechanisms and kinetics of thermal decomposition processes of silicon surfaces grafted with different organic molecules via Si-C bonds at atomistic level. In this work, we considered the Si(111) surface grafted with n-alkyl (ethyl, propyl, pentyl and decyl) layers in 50 % coverage and Si-CH3, Si-CCCH3 and Si-CHCHCH3 layers in full coverage. Si radicals primarily formed by the homolytic cleavage of Si-C bonds play a key role in the dehydrogenation processes that lead to the decomposition of the monolayers...
August 16, 2017: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/28809957/social-adaptation-in-multi-agent-model-of-linguistic-categorization-is-affected-by-network-information-flow
#18
Julian Zubek, Michał Denkiewicz, Juliusz Barański, Przemysław Wróblewski, Joanna Rączaszek-Leonardi, Dariusz Plewczynski
This paper explores how information flow properties of a network affect the formation of categories shared between individuals, who are communicating through that network. Our work is based on the established multi-agent model of the emergence of linguistic categories grounded in external environment. We study how network information propagation efficiency and the direction of information flow affect categorization by performing simulations with idealized network topologies optimizing certain network centrality measures...
2017: PloS One
https://www.readbyqxmd.com/read/28809759/independent-dose-verification-system-with-monte-carlo-simulations-using-topas-for-passive-scattering-proton-therapy-at-the-national-cancer-center-in-korea
#19
Wook-Geun Shin, Mauro Testa, Hak Soo Kim, Jong Hwi Jeong, Se Byeong Lee, Yeon-Joo Kim, Chul Hee Min
For the independent validation of treatment plans, we developed a Monte Carlo (MC)-based patient dose calculation system with the tool for particle simulation (TOPAS) to enable routine and automatic dose recalculation for each patient. The proton beam nozzle was modeled with TOPAS to simulate the therapeutic beam, and MC commissioning was performed by comparing percent depth dose with the measurement. The beam set-up based on the prescribed beam range and modulation width was automated by modifying the vendor-specific method...
August 15, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28808308/on-the-potential-alternate-binding-change-mechanism-in-a-dimeric-structure-of-pyruvate-phosphate-dikinase
#20
Daniel Ciupka, Holger Gohlke
The pyruvate phosphate dikinase (PPDK) reaction mechanism is characterized by a distinct spatial separation of reaction centers and large conformational changes involving an opening-closing motion of the nucleotide-binding domain (NBD) and a swiveling motion of the central domain (CD). However, why PPDK is active only in a dimeric form and to what extent an alternate binding change mechanism could underlie this fact has remained elusive. We performed unbiased molecular dynamics simulations, configurational free energy computations, and rigidity analysis to address this question...
August 14, 2017: Scientific Reports
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