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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
#1
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
#2
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
#3
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
#4
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
#5
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
#6
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
#7
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
#8
Xuefu Hu, Zi Wang, Bangjiang Lin, Cankun Zhang, Lingyun Cao, Tingting Wang, Jingzheng Zhang, Cheng Wang, Wenbin Lin
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. We assembled tetraphenylethylene-based tetracarboxylate ligands (TCBPE) with aggregation-induced emission property into the first luminescent MOL by linking with Zr6O4(OH)6(H2O)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
#9
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
#10
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
https://www.readbyqxmd.com/read/28479553/a-two-layer-method-for-sedentary-behaviors-classification-using-smartphone-and-bluetooth-beacons
#11
Jesús D Cerón, Diego M López, Christian Hofmann
BACKGROUND: Among the factors that outline the health of populations, person's lifestyle is the more important one. This work focuses on the caracterization and prevention of sedentary lifestyles. A sedentary behavior is defined as "any waking behavior characterized by an energy expenditure of 1.5 METs (Metabolic Equivalent) or less while in a sitting or reclining posture". OBJECTIVE: To propose a method for sedentary behaviors classification using a smartphone and Bluetooth beacons considering different types of classification models: personal, hybrid or impersonal...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28479552/open-dataset-for-the-automatic-recognition-of-sedentary-behaviors
#12
William Possos, Robinson Cruz, Jesús D Cerón, Diego M López, Carlos H Sierra-Torres
BACKGROUND: Sedentarism is associated with the development of noncommunicable diseases (NCD) such as cardiovascular diseases (CVD), type 2 diabetes, and cancer. Therefore, the identification of specific sedentary behaviors (TV viewing, sitting at work, driving, relaxing, etc.) is especially relevant for planning personalized prevention programs. OBJECTIVE: To build and evaluate a public a dataset for the automatic recognition (classification) of sedentary behaviors...
2017: Studies in Health Technology and Informatics
https://www.readbyqxmd.com/read/28470263/eyeglasses-based-wireless-electrolyte-and-metabolite-sensor-platform
#13
Juliane R Sempionatto, Tatsuo Nakagawa, Adriana Pavinatto, Samantha T Mensah, Somayeh Imani, Patrick Mercier, Joseph Wang
The demand for wearable sensors has grown rapidly in recent years, with increasing attention being given to epidermal chemical sensing. Here, we present the first example of a fully integrated eyeglasses wireless multiplexed chemical sensing platform capable of real-time monitoring of sweat electrolytes and metabolites. The new concept has been realized by integrating an amperometric lactate biosensor and a potentiometric potassium ion-selective electrode into the two nose-bridge pads of the glasses and interfacing them with a wireless electronic backbone placed on the glasses' arms...
May 4, 2017: Lab on a Chip
https://www.readbyqxmd.com/read/28468294/bluetooth-low-power-modes-applied-to-the-data-transportation-network-in-home-automation-systems
#14
Josu Etxaniz, Gerardo Aranguren
Even though home automation is a well-known research and development area, recent technological improvements in different areas such as context recognition, sensing, wireless communications or embedded systems have boosted wireless smart homes. This paper focuses on some of those areas related to home automation. The paper draws attention to wireless communications issues on embedded systems. Specifically, the paper discusses the multi-hop networking together with Bluetooth technology and latency, as a quality of service (QoS) metric...
April 30, 2017: Sensors
https://www.readbyqxmd.com/read/28446682/smartphone-controlled-optogenetically-engineered-cells-enable-semiautomatic-glucose-homeostasis-in-diabetic-mice
#15
REVIEW
Jiawei Shao, Shuai Xue, Guiling Yu, Yuanhuan Yu, Xueping Yang, Yu Bai, Sucheng Zhu, Linfeng Yang, Jianli Yin, Yidan Wang, Shuyong Liao, Sanwei Guo, Mingqi Xie, Martin Fussenegger, Haifeng Ye
With the increasingly dominant role of smartphones in our lives, mobile health care systems integrating advanced point-of-care technologies to manage chronic diseases are gaining attention. Using a multidisciplinary design principle coupling electrical engineering, software development, and synthetic biology, we have engineered a technological infrastructure enabling the smartphone-assisted semiautomatic treatment of diabetes in mice. A custom-designed home server SmartController was programmed to process wireless signals, enabling a smartphone to regulate hormone production by optically engineered cells implanted in diabetic mice via a far-red light (FRL)-responsive optogenetic interface...
April 26, 2017: Science Translational Medicine
https://www.readbyqxmd.com/read/28445421/an-improved-ble-indoor-localization-with-kalman-based-fusion-an-experimental-study
#16
Jenny Röbesaat, Peilin Zhang, Mohamed Abdelaal, Oliver Theel
Indoor positioning has grasped great attention in recent years. A number of efforts have been exerted to achieve high positioning accuracy. However, there exists no technology that proves its efficacy in various situations. In this paper, we propose a novel positioning method based on fusing trilateration and dead reckoning. We employ Kalman filtering as a position fusion algorithm. Moreover, we adopt an Android device with Bluetooth Low Energy modules as the communication platform to avoid excessive energy consumption and to improve the stability of the received signal strength...
April 26, 2017: Sensors
https://www.readbyqxmd.com/read/28432532/a-portable-battery-powered-microfluidic-impedance-cytometer-with-smartphone-readout-towards-personal-health-monitoring
#17
Niloy Talukder, Abbas Furniturewalla, Tuan Le, Matthew Chan, Shreyas Hirday, Xinnan Cao, Pengfei Xie, Zhongtian Lin, Azam Gholizadeh, Steve Orbine, Mehdi Javanmard
We present a portable system for personalized blood cell counting consisting of a microfluidic impedance cytometer and portable analog readout electronics, feeding into an analog-to-digital converter (ADC), and being transmitted via Bluetooth to a user-accessible mobile application. We fabricated a microfluidic impedance cytometer with a novel portable analog readout. The novel design of the analog readout, which consists of a lock-in-amplifier followed by a high-pass filter stage for subtraction of drift and DC offset, and a post-subtraction high gain stage, enables detection of particles and cells as small as 1 μm in diameter, despite using a low-end 8-bit ADC...
June 2017: Biomedical Microdevices
https://www.readbyqxmd.com/read/28422664/diaper-embedded-urinary-tract-infection-monitoring-sensor-module-powered-by-urine-activated-batteries
#18
Weeseong Seo, Wuyang Yu, Tianlin Tan, Babak Ziaie, Byunghoo Jung
Urinary tract infection (UTI) is one of the most common infections in humans. UTI is easily treatable using antibiotics if identified in early stage. However, without early identification and treatment, UTI can be a major source of serious complications in geriatric patients, in particular, those suffering from neurodegenerative diseases. Also, for infants who have difficulty in describing their symptoms, UTI may lead to serious development of the disease making early identification of UTI crucial. In this paper, we present a diaper-embedded, wireless, self-powered, and autonomous UTI monitoring sensor module that allows an early detection of UTI with minimal effort...
June 2017: IEEE Transactions on Biomedical Circuits and Systems
https://www.readbyqxmd.com/read/28422068/a-low-cost-bluetooth-low-energy-transceiver-for-wireless-sensor-network-applications-with-a-front-end-receiver-matching-network-reusing-power-amplifier-load-inductor
#19
Zhen Liang, Bin Li, Mo Huang, Yanqi Zheng, Hui Ye, Ken Xu, Fangming Deng
In this work, a low cost Bluetooth Low Energy (BLE) transceiver for wireless sensor network (WSN) applications, with a receiver (RX)-matching network-reusing power amplifier (PA) load inductor, is presented. In order to decrease the die area, only two inductors were used in this work. Besides the one used in the voltage control oscillator (VCO), the PA load inductor was reused as the RX impedance matching component in the front-end. Proper controls have been applied to achieve high transmitter (TX) input impedance when the transceiver is in the receiving mode, and vice versa...
April 19, 2017: Sensors
https://www.readbyqxmd.com/read/28420132/a-smart-voltage-and-current-monitoring-system-for-three-phase-inverters-using-an-android-smartphone-application
#20
Mohannad Jabbar Mnati, Alex Van den Bossche, Raad Farhood Chisab
In this paper, a new smart voltage and current monitoring system (SVCMS) technique is proposed. It monitors a three phase electrical system using an Arduino platform as a microcontroller to read the voltage and current from sensors and then wirelessly send the measured data to monitor the results using a new Android application. The integrated SVCMS design uses an Arduino Nano V3.0 as the microcontroller to measure the results from three voltage and three current sensors and then send this data, after calculation, to the Android smartphone device of an end user using Bluetooth HC-05...
April 15, 2017: Sensors
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