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https://www.readbyqxmd.com/read/28644871/predicting-the-bounds-of-large-chaotic-systems-using-low-dimensional-manifolds
#1
Asger M Haugaard
Predicting extrema of chaotic systems in high-dimensional phase space remains a challenge. Methods, which give extrema that are valid in the long term, have thus far been restricted to models of only a few variables. Here, a method is presented which treats extrema of chaotic systems as belonging to discretised manifolds of low dimension (low-D) embedded in high-dimensional (high-D) phase space. As a central feature, the method exploits that strange attractor dimension is generally much smaller than parent system phase space dimension...
2017: PloS One
https://www.readbyqxmd.com/read/28640759/electroactive-%C3%AE-crystalline-phase-inclusion-and-photoluminescence-response-of-heat-controlled-spin-coated-pvdf-tio2-free-standing-nanocomposite-film-for-nanogenerator-and-active-nanosensor
#2
Md Mehebub Alam, Ayesha Sultana, Debabrata Sarkar, Dipankar Mandal
The electroactive β-phase is most desirable due to its highest piezo-, pyro- and ferro-electric properties in poly(vinylidene fluoride) (PVDF). Induction of β-phase is successfully accomplished in titanium dioxide (TiO2) nanoparticles (NPs) doped spin coated PVDF nanocomposite (PNC) films. The optimized yields of β-phase and homogeneous ultra-smooth free standing PNC film is utilized in mechanical energy harvesting application by fabricating a nanogenerator (NG) where the typical electrical poling step is not undertaken...
June 22, 2017: Nanotechnology
https://www.readbyqxmd.com/read/28636053/evidence-of-bad-recycling-practices-bfrs-in-children-s-toys-and-food-contact-articles
#3
A Guzzonato, F Puype, S J Harrad
Brominated flame retardants (BFRs) have been used intentionally in a wide range of plastics, but are now found in an even wider range of such materials (including children's toys and food contact articles) as a result of recycling practices that mix BFR-containing waste plastics with "virgin" materials. In this study Br was quantified in toy and food contact samples on the assumption that its concentration can be used as a metric for BFR contamination. Subsequently, compound specific determination of BFRs was performed to evaluate the validity of the aforementioned assumption, crucial to render rapid, inexpensive, in situ Br determination in non-laboratory environments (such as waste handling facilities) a viable option for sorting wastes according to their BFR content...
June 21, 2017: Environmental Science. Processes & Impacts
https://www.readbyqxmd.com/read/28631958/-anything-that-makes-life-s-journey-better-exploring-the-use-of-digital-technology-by-people-living-with-motor-neurone-disease
#4
Esther V Hobson, Saima Fazal, Pamela J Shaw, Christopher J McDermott
Our aim was to explore the attitudes of those living with motor neuron disease towards digital technology. Postal and online questionnaires surveyed 83 people with MND (pwMND) and 54 friends and family members (fMND). Five pwMND and five fMND underwent semi-structured interviews. 82% of pwMND and 87% of fMND use technology every day with iPads and laptops being the devices most commonly used. pwMND used technology to help them continue to participate in everyday activities such as socialising, entertainment and accessing the internet...
February 20, 2017: Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration
https://www.readbyqxmd.com/read/28618858/equivalence-of-laptop-and-tablet-administrations-of-the-minnesota-multiphasic-personality-inventory-2-restructured-form
#5
William H Menton, Adam H Crighton, Anthony M Tarescavage, Ryan J Marek, Adam D Hicks, Yossef S Ben-Porath
The present study investigated the comparability of laptop computer- and tablet-based administration modes for the Minnesota Multiphasic Personality Inventory-2-Restructured Form (MMPI-2-RF). Employing a counterbalanced within-subjects design, the MMPI-2-RF was administered via both modes to a sample of college undergraduates ( N = 133). Administration modes were compared in terms of mean scale scores, internal consistency, test-retest consistency, external validity, and administration time. Mean scores were generally similar, and scores produced via both methods appeared approximately equal in terms of internal consistency and test-retest consistency...
June 1, 2017: Assessment
https://www.readbyqxmd.com/read/28600133/developing-a-virtual-teach-to-goal-%C3%A2-inhaler-technique-learning-module-a-mixed-methods-approach
#6
Meng Wu, Nicole M Woodrick, Vineet M Arora, Jeanne M Farnan, Valerie G Press
BACKGROUND: Most hospitalized patients with asthma or chronic obstructive pulmonary disease misuse respiratory inhalers. An in-person educational strategy, teach-to-goal (TTG), improves inpatients' inhaler technique. OBJECTIVE: To develop an effective, portable education intervention that remains accessible to hospitalized patients postdischarge for reinforcement of proper inhaler technique. METHODS: A mixed methods approach at an urban academic hospital was used to iteratively develop, modify, and test a virtual teach-to-goal(™) (V-TTG(™)) educational intervention using patient end-user feedback...
June 6, 2017: Journal of Allergy and Clinical Immunology in Practice
https://www.readbyqxmd.com/read/28594353/the-development-of-an-open-hardware-and-software-system-onboard-unmanned-aerial-vehicles-to-monitor-concentrated-solar-power-plants
#7
Francisco Javier Mesas-Carrascosa, Daniel Verdú Santano, Fernando Pérez Porras, José Emilio Meroño-Larriva, Alfonso García-Ferrer
Concentrated solar power (CSP) plants are increasingly gaining interest as a source of renewable energy. These plants face several technical problems and the inspection of components such as absorber tubes in parabolic trough concentrators (PTC), which are widely deployed, is necessary to guarantee plant efficiency. This article presents a system for real-time industrial inspection of CSP plants using low-cost, open-source components in conjunction with a thermographic sensor and an unmanned aerial vehicle (UAV)...
June 8, 2017: Sensors
https://www.readbyqxmd.com/read/28592394/social-media-use-and-access-to-digital-technology-in-us-young-adults-in-2016
#8
Andrea C Villanti, Amanda L Johnson, Vinu Ilakkuvan, Megan A Jacobs, Amanda L Graham, Jessica M Rath
BACKGROUND: In 2015, 90% of US young adults with Internet access used social media. Digital and social media are highly prevalent modalities through which young adults explore identity formation, and by extension, learn and transmit norms about health and risk behaviors during this developmental life stage. OBJECTIVE: The purpose of this study was to provide updated estimates of social media use from 2014 to 2016 and correlates of social media use and access to digital technology in data collected from a national sample of US young adults in 2016...
June 7, 2017: Journal of Medical Internet Research
https://www.readbyqxmd.com/read/28583054/finger-and-wrist-pain-in-children-using-game-consoles-and-laptops-younger-children-and-longer-time-are-associated-with-increased-pain
#9
Deniz Ince, Christopher Swearingen, Yusuf Yazici
Game consoles, handheld units, and laptops are commonly used by children. Students at schools in St. Louis, Missouri, were asked to complete questionnaires asking about type, duration, and pain levels in their wrists and fingers related to the devices they used. Roughly, 75% of students were found to be using one of the devices. Younger age, female gender, and longer playing duration were associated with increase wrist and finger pain. Use of gaming and laptops, especially in younger children and with longer duration of use, is associated with increased pain in fingers and wrists...
April 2017: Bulletin of the Hospital for Joint Diseases
https://www.readbyqxmd.com/read/28580338/exposure-to-visible-light-emitted-from-smartphones-and-tablets-increases-the-proliferation-of-staphylococcus-aureus-can-this-be-linked-to-acne
#10
M Taheri, M Darabyan, E Izadbakhsh, F Nouri, M Haghani, S A R Mortazavi, G Mortazavi, S M J Mortazavi, M Moradi
BACKGROUND: Due to rapid advances in modern technologies such as telecommunication technology, the world has witnessed an exponential growth in the use of digital handheld devices (e.g. smartphones and tablets). This drastic growth has resulted in increased global concerns about the safety of these devices. Smartphones, tablets, laptops, and other digital screens emit high levels of short-wavelength visible light (i.e. blue color region in the visible light spectrum). MATERIAL AND METHODS: At a dark environment, Staphylococcus aureus bacteria were exposed to the light emitted from common tablets/smartphones...
June 2017: Journal of Biomedical Physics & Engineering
https://www.readbyqxmd.com/read/28541191/fast-numerical-simulation-of-focused-ultrasound-treatments-during-respiratory-motion-with-discontinuous-motion-boundaries
#11
Michael Schwenke, Joachim Georgii, Tobias Preusser
OBJECTIVE: Focused ultrasound (FUS) is rapidly gaining clinical acceptance for several target tissues in the human body. Yet, treating liver targets is not clinically applied due to a high complexity of the procedure (noninvasiveness, target motion, complex anatomy, blood cooling effects, shielding by ribs, and limited image-based monitoring). To reduce the complexity, numerical FUS simulations can be utilized for both treatment planning and execution. These use-cases demand highly accurate and computationally efficient simulations...
July 2017: IEEE Transactions on Bio-medical Engineering
https://www.readbyqxmd.com/read/28537510/remote-autopsy-services-a-feasibility-study-on-nine-cases
#12
Aleksandar Vodovnik, Mohammad Reza F Aghdam, Dan Gøran Espedal
Introduction We have conducted a feasibility study on remote autopsy services in order to increase the flexibility of the service with benefits for teaching and interdepartmental collaboration. Methods Three senior staff pathologists, one senior autopsy technician and one junior resident participated in the study. Nine autopsies were performed by the autopsy technician or resident, supervised by the primary pathologist, through the secure, double encrypted video link using Jabber Video (Cisco) with a high-speed broadband connection...
January 1, 2017: Journal of Telemedicine and Telecare
https://www.readbyqxmd.com/read/28509680/analyzing-dental-implant-sites-from-cone-beam-computed-tomography-scans-on-a-tablet-computer-a-comparative-study-between-ipad-and-3-display-systems
#13
Alejandro Carrasco, Elnaz Jalali, Ajay Dhingra, Alan Lurie, Sumit Yadav, Aditya Tadinada
PURPOSE: The aim of this study was to compare a medical-grade PACS (picture archiving and communication system) monitor, a consumer-grade monitor, a laptop computer, and a tablet computer for linear measurements of height and width for specific implant sites in the posterior maxilla and mandible, along with visualization of the associated anatomical structures. MATERIAL AND METHODS: Cone beam computed tomography (CBCT) scans were evaluated. The images were reviewed using PACS-LCD monitor, consumer-grade LCD monitor using CB-Works software, a 13″ MacBook Pro, and an iPad 4 using OsiriX DICOM reader software...
June 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28493924/cognitive-function-in-multiple-sclerosis-improves-with-telerehabilitation-results-from-a-randomized-controlled-trial
#14
Leigh E Charvet, Jie Yang, Michael T Shaw, Kathleen Sherman, Lamia Haider, Jianjin Xu, Lauren B Krupp
Cognitive impairment affects more than half of all individuals living with multiple sclerosis (MS). We hypothesized that training at home with an adaptive online cognitive training program would have greater cognitive benefit than ordinary computer games in cognitively-impaired adults with MS. This was a double-blind, randomized, active-placebo-controlled trial. Participants with MS were recruited through Stony Brook Medicine and randomly assigned to either the adaptive cognitive remediation (ACR) program or active control of ordinary computer games for 60 hours over 12 weeks...
2017: PloS One
https://www.readbyqxmd.com/read/28490961/radiofrequency-radiations-induced-genotoxic-and-carcinogenic-effects-on-chickpea-cicer-arietinum-l-root-tip-cells
#15
Sadaf Tabasum Qureshi, Sajjad Ahmed Memon, Abdul Rasool Abassi, Mahboob Ali Sial, Farooque Ali Bughio
Present study was under taken to predict the possible DNA damages (genotoxicity) and carcinogenicity caused by radiofrequency radiations (RF) to living tissue. Dry seeds of chickpea were treated with GSM cell phone (900 MHz) and laptop (3.31 GHz) as RF source for 24 and 48 h. Untreated seeds were used as (0 h) negative control and Gamma rays (250 Gray) as positive control. Plant chromosomal aberration assay was used as genotoxicity marker. All the treatment of RF inhibits seed germination percentage. 48 h laptop treatment has the most negative effect as compared to untreated control...
May 2017: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/28483746/a-web-based-graphical-food-frequency-assessment-system-design-development-and-usability-metrics
#16
Rodrigo Zenun Franco, Balqees Alawadhi, Rosalind Fallaize, Julie A Lovegrove, Faustina Hwang
BACKGROUND: Food frequency questionnaires (FFQs) are well established in the nutrition field, but there remain important questions around how to develop online tools in a way that can facilitate wider uptake. Also, FFQ user acceptance and evaluation have not been investigated extensively. OBJECTIVE: This paper presents a Web-based graphical food frequency assessment system that addresses challenges of reproducibility, scalability, mobile friendliness, security, and usability and also presents the utilization metrics and user feedback from a deployment study...
May 8, 2017: JMIR Human Factors
https://www.readbyqxmd.com/read/28471369/pepsi-saxs-an-adaptive-method-for-rapid-and-accurate-computation-of-small-angle-x-ray-scattering-profiles
#17
Sergei Grudinin, Maria Garkavenko, Andrei Kazennov
A new method called Pepsi-SAXS is presented that calculates small-angle X-ray scattering profiles from atomistic models. The method is based on the multipole expansion scheme and is significantly faster compared with other tested methods. In particular, using the Nyquist-Shannon-Kotelnikov sampling theorem, the multipole expansion order is adapted to the size of the model and the resolution of the experimental data. It is argued that by using the adaptive expansion order, this method has the same quadratic dependence on the number of atoms in the model as the Debye-based approach, but with a much smaller prefactor in the computational complexity...
May 1, 2017: Acta Crystallographica. Section D, Structural Biology
https://www.readbyqxmd.com/read/28469375/numericware-i-identical-by-state-matrix-calculator
#18
REVIEW
Bongsong Kim, William D Beavis
We introduce software, Numericware i, to compute identical by state (IBS) matrix based on genotypic data. Calculating an IBS matrix with a large dataset requires large computer memory and takes lengthy processing time. Numericware i addresses these challenges with 2 algorithmic methods: multithreading and forward chopping. The multithreading allows computational routines to concurrently run on multiple central processing unit (CPU) processors. The forward chopping addresses memory limitation by dividing a dataset into appropriately sized subsets...
2017: Evolutionary Bioinformatics Online
https://www.readbyqxmd.com/read/28467317/deep-learning-based-artificial-vision-for-grasp-classification-in-myoelectric-hands
#19
Ghazal Ghazaei, Ali Alameer, Patrick Degenaar, Graham Morgan, Kianoush Nazarpour
OBJECTIVE: Computer vision-based assistive technology solutions can revolutionise the quality of care for people with sensorimotor disorders. The goal of this work was to enable trans-radial amputees to use a simple, yet efficient, computer vision system to grasp and move common household objects with a two-channel myoelectric prosthetic hand. APPROACH: We developed a deep learning-based artificial vision system to augment the grasp functionality of a commercial prosthesis...
June 2017: Journal of Neural Engineering
https://www.readbyqxmd.com/read/28448916/on-the-necessity-of-improving-the-environmental-impacts-of-furniture-and-appliances-in-net-zero-energy-buildings
#20
Endrit Hoxha, Thomas Jusselme
There is now clear evidence regarding the extensive use of furniture and appliances in daily human life, but there is less evidence of their impact on the environment. Responding to this gap in knowledge, this study focuses on an assessment of the environmental impacts of furniture and appliances as used in highly energy efficient buildings. Their primary energy, non-renewable energy and global warming potential indicators have been assessed by extending the boundaries of the Life Cycle Assessment (LCA) study beyond the building itself...
April 24, 2017: Science of the Total Environment
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