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https://www.readbyqxmd.com/read/28640183/bluetooth-low-energy-mesh-networks-a-survey
#1
REVIEW
Seyed Mahdi Darroudi, Carles Gomez
Bluetooth Low Energy (BLE) has gained significant momentum. However, the original design of BLE focused on star topology networking, which limits network coverage range and precludes end-to-end path diversity. In contrast, other competing technologies overcome such constraints by supporting the mesh network topology. For these reasons, academia, industry, and standards development organizations have been designing solutions to enable BLE mesh networks. Nevertheless, the literature lacks a consolidated view on this emerging area...
June 22, 2017: Sensors
https://www.readbyqxmd.com/read/28627224/real-time-smart-textile-based-system-to-monitor-pressure-offloading-of-diabetic-foot-ulcers
#2
Andrea Raviglione, Roberto Reif, Maurizio Macagno, Davide Vigano, Justin Schram, David Armstrong
BACKGROUND: The lifetime risk of developing a diabetic foot ulcer (DFU) is at least 25%. A DFU carries a 50% risk for infection and at least 20% of those receive some form of amputation. The most significant parameter that prevents or delays ulcer healing is high plantar pressure. To improve the patient's healing process, the DFU's plantar pressure should remain cumulatively low. Therefore, a tool that continuously measures the DFU loading, and provides real-time feedback can improve the healing outcome...
February 1, 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/28617617/accuracy-and-user-performance-evaluation-of-a-new-wireless-enabled-blood-glucose-monitoring-system-that-links-to-a-smart-mobile-device
#3
Timothy S Bailey, Jane F Wallace, Scott Pardo, Mary Ellen Warchal-Windham, Bern Harrison, Robert Morin, Mark Christiansen
BACKGROUND: The new Contour(®)Plus ONE blood glucose monitoring system (BGMS) features an easy-to-use, wireless-enabled blood glucose meter that links to a smart mobile device via Bluetooth(®) connectivity and can sync with the Contour(™) Diabetes app on a smartphone or tablet. METHODS: The accuracy of the new BGMS was assessed in 2 studies according to ISO 15197:2013 criteria. In Study 1 (laboratory study), fingertip capillary blood samples from 100 subjects were tested in duplicate using 3 test strip lots...
February 1, 2017: Journal of Diabetes Science and Technology
https://www.readbyqxmd.com/read/28590895/a-qualitative-case-study-of-smartphone-connected-hearing-aids-influences-on-patients-clinicians-and-patient-clinician-interactions
#4
Stella L Ng, Shanon Phelan, MaryAnn Leonard, Jason Galster
BACKGROUND: Innovations in hearing aid technology influence clinicians and individuals who use hearing aids. Little research, to date, explains the innovation adoption experiences and perspectives of clinicians and patients, which matter to a field like audiology, wherein technology innovation is constant. By understanding clinician and patient experiences with such innovations, the field of audiology may develop technologies and ways of practicing in a manner more responsive to patients' needs, and attentive to society's influence...
June 2017: Journal of the American Academy of Audiology
https://www.readbyqxmd.com/read/28590413/an-empirical-study-of-the-transmission-power-setting-for-bluetooth-based-indoor-localization-mechanisms
#5
Manuel Castillo-Cara, Jesús Lovón-Melgarejo, Gusseppe Bravo-Rocca, Luis Orozco-Barbosa, Ismael García-Varea
Nowadays, there is a great interest in developing accurate wireless indoor localization mechanisms enabling the implementation of many consumer-oriented services. Among the many proposals, wireless indoor localization mechanisms based on the Received Signal Strength Indication (RSSI) are being widely explored. Most studies have focused on the evaluation of the capabilities of different mobile device brands and wireless network technologies. Furthermore, different parameters and algorithms have been proposed as a means of improving the accuracy of wireless-based localization mechanisms...
June 7, 2017: Sensors
https://www.readbyqxmd.com/read/28587285/study-on-an-indoor-positioning-system-for-harsh-environments-based-on-wi-fi-and-bluetooth-low-energy
#6
Gabriel de Blasio, Alexis Quesada-Arencibia, Carmelo R García, Jezabel Miriam Molina-Gil, Cándido Caballero-Gil
This paper presents a study of positioning system that provides advanced information services based on Wi-Fi and Bluetooth Low Energy (BLE) technologies. It uses Wi-Fi for rough positioning and BLE for fine positioning. It is designed for use in public transportation system stations and terminals where the conditions are "hostile" or unfavourable due to signal noise produced by the continuous movement of passengers and buses, data collection conducted in the constant presence thereof, multipath fading, non-line of sight (NLOS) conditions, the fact that part of the wireless communication infrastructure has already been deployed and positioned in a way that may not be optimal for positioning purposes, variable humidity conditions, etc...
June 6, 2017: Sensors
https://www.readbyqxmd.com/read/28558835/a-muscle-driven-approach-to-restore-stepping-with-an-exoskeleton-for-individuals-with-paraplegia
#7
Sarah R Chang, Mark J Nandor, Lu Li, Rudi Kobetic, Kevin M Foglyano, John R Schnellenberger, Musa L Audu, Gilles Pinault, Roger D Quinn, Ronald J Triolo
BACKGROUND: Functional neuromuscular stimulation, lower limb orthosis, powered lower limb exoskeleton, and hybrid neuroprosthesis (HNP) technologies can restore stepping in individuals with paraplegia due to spinal cord injury (SCI). However, a self-contained muscle-driven controllable exoskeleton approach based on an implanted neural stimulator to restore walking has not been previously demonstrated, which could potentially result in system use outside the laboratory and viable for long term use or clinical testing...
May 30, 2017: Journal of Neuroengineering and Rehabilitation
https://www.readbyqxmd.com/read/28556667/accelerometer-measured-patterns-of-shared-physical-activity-among-mother-young-child-dyads
#8
Deirdre Dlugonski, Katrina D DuBose, Patrick Rider
BACKGROUND: Many mothers and young children are not meeting physical activity guidelines. Parent-child co-participation in physical activity (i.e., shared physical activity) provides opportunities for social modeling and might be associated with child physical activity. There is very little information about shared physical activity using objective measures. METHODS: Participants (N=17 mother-young child dyads) completed a demographic survey, height/weight measurements, and wore a Bluetooth® accelerometer for one week...
May 30, 2017: Journal of Physical Activity & Health
https://www.readbyqxmd.com/read/28555022/location-enhanced-activity-recognition-in-indoor-environments-using-off-the-shelf-smart-watch-technology-and-ble-beacons
#9
Avgoustinos Filippoupolitis, William Oliff, Babak Takand, George Loukas
Activity recognition in indoor spaces benefits context awareness and improves the efficiency of applications related to personalised health monitoring, building energy management, security and safety. The majority of activity recognition frameworks, however, employ a network of specialised building sensors or a network of body-worn sensors. As this approach suffers with respect to practicality, we propose the use of commercial off-the-shelf devices. In this work, we design and evaluate an activity recognition system composed of a smart watch, which is enhanced with location information coming from Bluetooth Low Energy (BLE) beacons...
May 27, 2017: Sensors
https://www.readbyqxmd.com/read/28554877/comparison-of-ecological-momentary-assessment-versus-direct-measurement-of-e-cigarette-use-with-a-bluetooth-enabled-e-cigarette-a-pilot-study
#10
Jennifer L Pearson, Hoda Elmasry, Babita Das, Sabrina L Smiley, Leslie F Rubin, Teresa DeAtley, Emily Harvey, Yitong Zhou, Raymond Niaura, David B Abrams
BACKGROUND: Assessing the frequency and intensity of e-cigarette use presents special challenges beyond those posed by cigarette use. Accurate measurement of e-cigarette consumption, puff duration, and the stability of these measures over time will be informative for estimating the behavioral and health effects of e-cigarette use. OBJECTIVE: The purpose of this pilot study was to compare the accuracy of self-reported e-cigarette puff counts collected via ecological momentary assessment (EMA) to objective puff count data collected by a Bluetooth-enabled e-cigarette device and to examine the feasibility and acceptability of using a second-generation e-cigarette among adult smokers...
May 29, 2017: JMIR Research Protocols
https://www.readbyqxmd.com/read/28549455/inter-act-prevention-of-pregnancy-complications-through-an-e-health-driven-interpregnancy-lifestyle-intervention-study-protocol-of-a-multicentre-randomised-controlled-trial
#11
Annick Bogaerts, Lieveke Ameye, Margriet Bijlholt, Kelly Amuli, Dorine Heynickx, Roland Devlieger
BACKGROUND: Excessive maternal pre-pregnancy and gestational weight gain are related to pregnancy- and birth outcomes. The interpregnancy time window offers a unique opportunity to intervene in order to acquire a healthy lifestyle before the start of a new pregnancy. METHODS: INTER-ACT is an e-health driven multicentre randomised controlled intervention trial targeting women at high risk of pregnancy- and birth related complications. Eligible women are recruited for the study at day 2 or 3 postpartum...
May 26, 2017: BMC Pregnancy and Childbirth
https://www.readbyqxmd.com/read/28534847/low-power-multi-hop-networking-analysis-in-intelligent-environments
#12
Josu Etxaniz, Gerardo Aranguren
Intelligent systems are driven by the latest technological advances in many different areas such as sensing, embedded systems, wireless communications or context recognition. This paper focuses on some of those areas. Concretely, the paper deals with wireless communications issues in embedded systems. More precisely, the paper combines the multi-hop networking with Bluetooth technology and a quality of service (QoS) metric, the latency. Bluetooth is a radio license-free worldwide communication standard that makes low power multi-hop wireless networking available...
May 19, 2017: Sensors
https://www.readbyqxmd.com/read/28524674/holography-of-wi-fi-radiation
#13
Philipp M Holl, Friedemann Reinhard
Wireless data transmission systems such as wi-fi or Bluetooth emit coherent light-electromagnetic waves with a precisely known amplitude and phase. Propagating in space, this radiation forms a hologram-a two-dimensional wave front encoding a three-dimensional view of all objects traversed by the light beam. Here we demonstrate a scheme to record this hologram in a phase-coherent fashion across a meter-sized imaging region. We recover three-dimensional views of objects and emitters by feeding the resulting data into digital reconstruction algorithms...
May 5, 2017: Physical Review Letters
https://www.readbyqxmd.com/read/28512303/volunteer-participation-in-the-health-eheart-study-a-comparison-with-the-us-population
#14
Xiaofan Guo, Eric Vittinghoff, Jeffrey E Olgin, Gregory M Marcus, Mark J Pletcher
Direct volunteer "eCohort" recruitment can be an efficient way of recruiting large numbers of participants, but there is potential for volunteer bias. We compared self-selected participants in the Health eHeart Study to participants in the National Health And Nutrition Examination Survey (NHANES) 2013-14, a cross-sectional survey of the US population. Compared with the US population (represented by 5,769 NHANES participants), the 12,280 Health eHeart participants with complete survey data were more likely to be female (adjusted odds ratio (ORadj) = 3...
May 16, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28508815/bluetooth-low-energy-peripheral-android-health-app-for-educational-and-interoperability-testing-purposes
#15
Matthias Frohner, Philipp Urbauer, Stefan Sauermann
Based on recent telemonitoring activities in Austria for enabling integrated health care, the communication interfaces between personal health devices (e.g. blood pressure monitor) and personal health gateway devices (e.g. smartphone, routing received information to wide area networks) play an important role. In order to ease testing of the Bluetooth Low Energy interface functionality of the personal health gateway devices, a personal health device simulator was developed. Based on specifications from the Bluetooth SIG a XML software test configuration file structure is defined that declares the specific features of the personal health devices simulated...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28497557/acquiring-research-grade-erps-on-a-shoestring-budget-a-comparison-of-a-modified-emotiv-and-commercial-synamps-eeg-system
#16
Michael P Barham, Gillian M Clark, Melissa J Hayden, Peter G Enticott, Russell Conduit, Jarrad A G Lum
This study compared the performance of a low-cost wireless EEG system to a research-grade EEG system on an auditory oddball task designed to elicit N200 and P300 ERP components. Participants were 15 healthy adults (6 female) aged between 19 and 40 (M = 28.56; SD = 6.38). An auditory oddball task was presented comprising 1,200 presentations of a standard tone interspersed by 300 trials comprising a deviant tone. EEG was simultaneously recorded from a modified Emotiv EPOC and a NeuroScan SynAmps RT EEG system...
May 12, 2017: Psychophysiology
https://www.readbyqxmd.com/read/28492479/fusion-based-on-visible-light-positioning-and-inertial-navigation-using-extended-kalman-filters
#17
Zhitian Li, Lihui Feng, Aiying Yang
With the rapid development of smart technology, the need for location-based services (LBS) increases every day. Since classical positioning technology such as GPS cannot satisfy the needs of indoor positioning, new indoor positioning technologies, such as Bluetooth, Wi-Fi, and Visible light communication (VLC), have already cut a figure. VLC positioning has been proposed because it has higher accuracy, costs less, and is easier to accomplish in comparison to the other indoor positioning technologies. However, the practicality of VLC positioning is limited since it is easily affected by multipath effects and the layout of LEDs...
May 11, 2017: Sensors
https://www.readbyqxmd.com/read/28485839/two-dimensional-metal-organic-layers-as-a-bright-and-processable-phosphor-for-fast-white-light-communication
#18
Xuefu Hu, Zi Wang, Bangjiang Lin, Cankun Zhang, Lingyun Cao, Tingting Wang, Jingzheng Zhang, Cheng Wang, Wenbin Lin
A metal-organic layer (MOL) is a new type of 2D material that is derived from metal-organic frameworks (MOFs) by reducing one dimension to a single layer or a few layers. Tetraphenylethylene-based tetracarboxylate ligands (TCBPE), with aggregation-induced emission properties, were assembled into the first luminescent MOL by linking with Zr6 O4 (OH)6 (H2 O)2 (HCO2 )6 clusters. The emissive MOL can replace the lanthanide phosphors in white light emitting diodes (WLEDs) with remarkable processability, color rendering, and brightness...
May 9, 2017: Chemistry: a European Journal
https://www.readbyqxmd.com/read/28483744/etest-developing-a-smart-home-hiv-testing-kit-that-enables-active-real-time-follow-up-and-referral-after-testing
#19
Tyler Wray, Philip A Chan, Erik Simpanen, Don Operario
BACKGROUND: Men who have sex with men (MSM) are the group at highest risk for contracting human immunodeficiency virus (HIV) in the United States, but many do not test as frequently as recommended. Home-based self-testing (HBST) for HIV holds promise for promoting regular testing among these individuals, but currently available HBSTs have limited follow-up options, providing only a 1-800 number that participants can call. Failure to actively conduct follow-up counseling and referrals after HBST use could result in delays in seeking confirmatory testing and care among users receiving reactive (preliminary positive) test results...
May 8, 2017: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/28481252/wearable-contactless-respiration-sensor-based-on-multi-material-fibers-integrated-into-textile
#20
Philippe Guay, Stepan Gorgutsa, Sophie LaRochelle, Younes Messaddeq
In this paper, we report on a novel sensor for the contactless monitoring of the respiration rate, made from multi-material fibers arranged in the form of spiral antenna (2.45 GHz central frequency). High flexibility of the used composite metal-glass-polymer fibers permits their integration into a cotton t-shirt without compromising comfort or restricting movement of the user. At the same time, change of the antenna geometry, due to the chest expansion and the displacement of the air volume in the lungs, is found to cause a significant shift of the antenna operational frequency, thus allowing respiration detection...
May 6, 2017: Sensors
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