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Eunjoo Jeon, Hyeoun-Ae Park
Objectives: This study developed a diabetes self-management mobile application based on the information-motivation-behavioral skills (IMB) model, evidence extracted from clinical practice guidelines, and requirements identified through focus group interviews (FGIs) with diabetes patients. Methods: We developed a diabetes self-management (DSM) app in accordance with the following four stages of the system development life cycle. The functional and knowledge requirements of the users were extracted through FGIs with 19 diabetes patients...
April 2018: Healthcare Informatics Research
Xiaofei Zhu, Yinhui Ju, Jian Chen, Deye Liu, Hong Liu
We report a non-enzymatic wearable sensor for electrochemical analysis of perspiration glucose. Multi-potential steps are applied on a Au electrode, including a high negative pretreatment potential step for proton reduction which produc-es a localized alkaline condition, a moderate potential step for electrocatalytic oxidation of glucose under the alkaline condi-tion, and a positive potential step to clean and reactivate the electrode surface for the next detection. Fluorocarbon-based materials were coated on the Au electrode for improving the selectivity and robustness of the sensor...
May 16, 2018: ACS Sensors
He Xu, Manxing Wu, Peng Li, Feng Zhu, Ruchuan Wang
Nowadays, location-based services, which include services to identify the location of a person or an object, have many uses in social life. Though traditional GPS positioning can provide high quality positioning services in outdoor environments, due to the shielding of buildings and the interference of indoor environments, researchers and enterprises have paid more attention to how to perform high precision indoor positioning. There are many indoor positioning technologies, such as WiFi, Bluetooth, UWB and RFID...
May 10, 2018: Sensors
Ji Wang, Hailiang Guo, Xiaoli Ren
According to the development status of wearable technology and the demand of intelligent health monitoring, we studied the multi-function integrated smart watches solution and its key technology. First of all, the sensor technology with high integration density, Bluetooth low energy (BLE) and mobile communication technology were integrated and used in develop practice. Secondly, for the hardware design of the system in this paper, we chose the scheme with high integration density and cost-effective computer modules and chips...
August 1, 2017: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
Rongguo Yan, Yin Qian, Xiaoye Qiu, Junguo Li
The paper introduces a training system for foot ulcer patients based on three axis accelerometer, which uses three axis accelerometer and Apple mobile phone platform to guide foot ulcer patients to carry out a variety of lower limb muscle tissues training. The acceleration values of three directions for the foot training is obtained by analog-to-digital conversion and transmitted to the Apple mobile phone via its Bluetooth low energy. The Apple mobile phone accomplishes acceleration data preprocessing, numerical filtering and adaptive dual-threshold processing by our developed application program, so as to achieve the purpose of foot gesture recognition...
August 1, 2017: Sheng Wu Yi Xue Gong Cheng Xue za Zhi, Journal of Biomedical Engineering, Shengwu Yixue Gongchengxue Zazhi
José Ignacio Suárez, Patricia Arroyo, Jesús Lozano, José Luis Herrero, Manuel Padilla
This study addresses the development of a miniaturized (60 × 60 mm) Wireless Sensing Module (WSM) for environmental application and air quality detection. The proposed prototype has six sensors: one for humidity, one for ambient temperature (SHT21 from Sensirion), and four for gas detection (MiCS-4514, MiCS-5526 and MiCS-5914 from SGX Sensortech). The core of the system is based on a high performance 8-bit microcontroller, model PIC18F46K80, from Microchip. The obtained data values were transmitted to the Smartphone through a Bluetooth communication module and a home-developed Android app...
April 26, 2018: Chemosphere
Geertje Goedhart, Luuk van Wel, Chelsea E Langer, Patricia de Llobet Viladoms, Joe Wiart, Martine Hours, Hans Kromhout, Geza Benke, Evdoxia Bouka, Revital Bruchim, Kyung-Hwa Choi, Amanda Eng, Mina Ha, Anke Huss, Kosuke Kiyohara, Noriko Kojimahara, Daniel Krewski, Brigitte Lacour, Andrea 't Mannetje, Milena Maule, Enrica Migliore, Charmaine Mohipp, Franco Momoli, Eleni Th Petridou, Katja Radon, Thomas Remen, Siegal Sadetzki, Malcolm Sim, Tobias Weinmann, Elisabeth Cardis, Martine Vrijheid, Roel Vermeulen
OBJECTIVE: To study recall of mobile phone usage, including laterality and hands-free use, in young people. METHODS: Actual mobile phone use was recorded among volunteers aged between 10 and 24 years from 12 countries by the software application XMobiSense and was compared with self-reported mobile phone use at 6 and 18 months after using the application. The application recorded number and duration of voice calls, number of text messages, amount of data transfer, laterality (% of call time the phone was near the right or left side of the head, or neither), and hands-free usage...
April 25, 2018: Environmental Research
Sandra Komarzynski, Qi Huang, Pasquale F Innominato, Monique Maurice, Alexandre Arbaud, Jacques Beau, Mohamed Bouchahda, Ayhan Ulusakarya, Nicolas Beaumatin, Gabriele Breda, Bärbel Finkenstädt, Francis Levi
BACKGROUND: Experimental and epidemiologic studies have shown that circadian clocks disruption can play an important role in the development of cancer and metabolic diseases. The cellular clocks outside the brain are effectively coordinated by the body temperature rhythm. We hypothesized that concurrent measurements of body temperature and rest-activity rhythms would assess circadian clocks coordination in individual patients, thus enabling the integration of biological rhythms into precision medicine...
January 5, 2018: Journal of Medical Internet Research
Seungho Kuk, Junha Kim, Yongtae Park, Hyogon Kim
The high linear correlation between the smartphone magnetometer readings in close proximity can be exploited for physical human contact detection, which could be useful for such applications as infectious disease contact tracing or social behavior monitoring. Alternative approaches using other capabilities in smartphones have aspects that do not fit well with the human contact detection. Using Wi-Fi or cellular fingerprints have larger localization errors than close human contact distances. Bluetooth beacons could reveal the identity of the transmitter, threatening the privacy of the user...
April 27, 2018: Sensors
Lindsey D Thiessen, Tara M Neill, Walter F Mahaffee
Plant pathogen detection systems have been useful tools to monitor inoculum presence and initiate management schedules. More recently, a loop-mediated isothermal amplification (LAMP) assay was successfully designed for field use in the grape powdery mildew pathosystem; however, false negatives or false positives were prevalent in grower-conducted assays due to the difficulty in perceiving the magnesium pyrophosphate precipitate at low DNA concentrations. A quantitative LAMP (qLAMP) assay using a fluorescence resonance energy transfer-based probe was assessed by grape growers in the Willamette Valley of Oregon...
2018: PeerJ
Daniele Magistro, Salvatore Sessa, Andrew P Kingsnorth, Adam Loveday, Alessandro Simeone, Massimiliano Zecca, Dale W Esliger
BACKGROUND: Unfortunately, global efforts to promote "how much" physical activity people should be undertaking have been largely unsuccessful. Given the difficulty of achieving a sustained lifestyle behavior change, many scientists are reexamining their approaches. One such approach is to focus on understanding the context of the lifestyle behavior (ie, where, when, and with whom) with a view to identifying promising intervention targets. OBJECTIVE: The aim of this study was to develop and implement an innovative algorithm to determine "where" physical activity occurs using proximity sensors coupled with a widely used physical activity monitor...
April 20, 2018: JMIR MHealth and UHealth
Hongtai Yang, Jianjiang Yang, Lee D Han, Xiaohan Liu, Li Pu, Shih-Miao Chin, Ho-Ling Hwang
Along with the rapid development of Intelligent Transportation Systems, traffic data collection technologies have progressed fast. The emergence of innovative data collection technologies such as remote traffic microwave sensor, Bluetooth sensor, GPS-based floating car method, and automated license plate recognition, has significantly increased the variety and volume of traffic data. Despite the development of these technologies, the missing data issue is still a problem that poses great challenge for data based applications such as traffic forecasting, real-time incident detection, dynamic route guidance, and massive evacuation optimization...
2018: PloS One
Alar Ainla, Maral P S Mousavi, Maria-Nefeli Tsaloglou, Julia Redston, Jeffrey G Bell, M Teresa Fernández-Abedul, George M Whitesides
This paper describes the design and characterization of an open-source universal wireless electrochemical detector (UWED). This detector interfaces with a smartphone (or a tablet) using Bluetooth Low Energy protocol; the smartphone provides (i) a user interface for receiving the experimental parameters from the user and visualizing the result in real-time, and (ii) a proxy for storing, processing, and transmitting the data and experimental protocols. This approach simplifies the design, and decreases both the size and the cost of the hardware; it also makes UWED adaptable to different types of analyses by simple modification of the software...
April 16, 2018: Analytical Chemistry
José Antonio Santoyo-Ramón, Eduardo Casilari, José Manuel Cano-García
This paper describes a wearable Fall Detection System (FDS) based on a body-area network consisting of four nodes provided with inertial sensors and Bluetooth wireless interfaces. The signals captured by the nodes are sent to a smartphone which simultaneously acts as another sensing point. In contrast to many FDSs proposed by the literature (which only consider a single sensor), the multisensory nature of the prototype is utilized to investigate the impact of the number and the positions of the sensors on the effectiveness of the production of the fall detection decision...
April 10, 2018: Sensors
Gabriela Constantinescu, Kristina Kuffel, Ben King, William Hodgetts, Jana Rieger
The objective of this study was to conduct the first patient usability testing of a mobile health (mHealth) system for in-home swallowing therapy. Five participants with a history of head and neck cancer evaluated the mHealth system. After completing an in-application (app) tutorial with the clinician, participants were asked to independently complete five tasks: pair the device to the smartphone, place the device correctly, exercise, interpret progress displays, and close the system. Quantitative and qualitative methods were used to evaluate the effectiveness, efficiency, and satisfaction with the system...
April 1, 2018: Health Informatics Journal
Kan Luo, Zhipeng Cai, Keqin Du, Fumin Zou, Xiangyu Zhang, Jianqing Li
Energy efficiency is still the obstacle for long-term real-time wireless ECG monitoring. In this paper, a digital compressed sensing- (CS-) based single-spot Bluetooth ECG node is proposed to deal with the challenge in wireless ECG application. A periodic sleep/wake-up scheme and a CS-based compression algorithm are implemented in a node, which consists of ultra-low-power analog front-end, microcontroller, Bluetooth 4.0 communication module, and so forth. The efficiency improvement and the node's specifics are evidenced by the experiments using the ECG signals sampled by the proposed node under daily activities of lay, sit, stand, walk, and run...
2018: Journal of Healthcare Engineering
Alexander Yohan, Nai-Wei Lo, Doni Winata
The development of information technology has paved the way for faster and more convenient payment process flows and new methodology for the design and implementation of next generation payment systems. The growth of smartphone usage nowadays has fostered a new and popular mobile payment environment. Most of the current generation smartphones support Bluetooth Low Energy (BLE) technology to communicate with nearby BLE-enabled devices. It is plausible to construct an Over-the-Air BLE-based mobile payment system as one of the payment methods for people living in modern societies...
March 25, 2018: Sensors
Mourad Roudjane, Simon Bellemare-Rousseau, Mazen Khalil, Stepan Gorgutsa, Amine Miled, Younes Messaddeq
In this paper, we present a new mobile wireless communication platform for real-time monitoring of an individual's breathing rate. The platform takes the form of a wearable stretching T-shirt featuring a sensor and a detection base station. The sensor is formed by a spiral-shaped antenna made from a multi-material fiber connected to a compact transmitter. Based on the resonance frequency of the antenna at approximately 2.4 GHz, the breathing sensor relies on its Bluetooth transmitter. The contactless and non-invasive sensor is designed without compromising the user's comfort...
March 25, 2018: Sensors
Jure Tuta, Matjaz B Juric
This paper presents MFAM (Multiple Frequency Adaptive Model-based localization method), a novel model-based indoor localization method that is capable of using multiple wireless signal frequencies simultaneously. It utilizes indoor architectural model and physical properties of wireless signal propagation through objects and space. The motivation for developing multiple frequency localization method lies in the future Wi-Fi standards (e.g., 802.11ah) and the growing number of various wireless signals present in the buildings (e...
March 24, 2018: Sensors
Dara Rouholiman, Jamison G Gamble, Sylvie D Dobrota, Ellen M Encisco, Ashish G Shah, Francisco J Grajales Iii, Larry F Chu
BACKGROUND: Ostomy surgeries involving the placement of an ostomy bag (eg, colostomy, ileostomy, urostomy, etc) have been shown to have a negative impact on health-related quality of life. To date, no studies have been conducted examining what impact, if any, wearable biosensors have on the health-related quality of life of ostomy patients. OBJECTIVE: In the present study, we plan to assess the quality of life of ostomy patients using the Ostom-i alert sensor, a portable, wearable, Bluetooth-linked biosensor that facilitates easier ostomy bag output measurements...
March 26, 2018: JMIR Research Protocols
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