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https://www.readbyqxmd.com/read/29342123/image-based-localization-aided-indoor-pedestrian-trajectory-estimation-using-smartphones
#1
Yan Zhou, Xianwei Zheng, Ruizhi Chen, Hanjiang Xiong, Sheng Guo
Accurately determining pedestrian location in indoor environments using consumer smartphones is a significant step in the development of ubiquitous localization services. Many different map-matching methods have been combined with pedestrian dead reckoning (PDR) to achieve low-cost and bias-free pedestrian tracking. However, this works only in areas with dense map constraints and the error accumulates in open areas. In order to achieve reliable localization without map constraints, an improved image-based localization aided pedestrian trajectory estimation method is proposed in this paper...
January 17, 2018: Sensors
https://www.readbyqxmd.com/read/29341881/clinical-implications-of-technological-advances-in-screening-for-atrial-fibrillation
#2
REVIEW
Nikhil Singh, Sung Chun, David Hadley, Victor Froelicher
The incidence of atrial fibrillation (AF) continues to increase worldwide as people live longer. AF is the leading cause of stroke among patients older than 75 years and is responsible for at least 15% of all strokes. Industry has responded to this problem with a plethora of monitoring devices. These include single lead ECG adhesive sensors, implantable loop recorders, smartphone attachments and wearables. This review will concentrate on clinical studies using these technologies. There are wearables including watches and watch-like devices that will be mentioned but these have not been validated for clinical use...
January 13, 2018: Progress in Cardiovascular Diseases
https://www.readbyqxmd.com/read/29340401/a-nanopaper-based-artificial-tongue-a-ratiometric-fluorescent-sensor-array-on-bacterial-nanocellulose-for-chemical-discrimination-applications
#3
Samira Abbasi-Moayed, Hamed Golmohammadi, M Reza Hormozi-Nezhad
In the present study, a ratiometric fluorescent sensor array as an artificial tongue has been developed on a nanopaper platform for chemical discrimination applications. The bacterial cellulose (BC) nanopaper was utilized for the first time as a novel, flexible, and transparent substrate in the optical sensor arrays for developing high-performance artificial tongues. To fabricate this platform, the hydrophobic walls on the BC nanopaper substrates were successfully created using a laser printing technology. In addition, we have used the interesting photoluminescence (PL) properties of an immobilized ratiometric probe (carbon dot-Rhodamine B (CD-RhB) nanohybrids) on the nanopaper platform to improve the visual discrimination analysis...
January 17, 2018: Nanoscale
https://www.readbyqxmd.com/read/29340251/the-relationships-between-exercise-and-affective-states-a-naturalistic-longitudinal-study-of-recreational-runners
#4
Tim Bonham, Gillian V Pepper, Daniel Nettle
Background: Although people generally feel more positive and more energetic in the aftermath of exercise than before, longitudinal research on how exercise relates to within-person fluctuations in affect over the course of everyday life is still relatively limited. One constraint on doing such research is the need to provide participants with accelerometers to objectively record their exercise, and pagers to capture affective reports. Aims: We aimed to develop a methodology for studying affect and exercise using only technology that participants already possess, namely GPS running watches and smartphones...
2018: PeerJ
https://www.readbyqxmd.com/read/29339378/smartphone-gp-consultation-app-cost-ccg-%C3%A2-150-000-in-first-two-months
#5
Gareth Iacobucci
No abstract text is available yet for this article.
January 16, 2018: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/29339346/user-centered-design-of-learn-to-quit-a-smoking-cessation-smartphone-app-for-people-with-serious-mental-illness
#6
Roger Vilardaga, Javier Rizo, Emily Zeng, Julie A Kientz, Richard Ries, Chad Otis, Kayla Hernandez
BACKGROUND: Smoking rates in the United States have been reduced in the past decades to 15% of the general population. However, up to 88% of people with psychiatric symptoms still smoke, leading to high rates of disease and mortality. Therefore, there is a great need to develop smoking cessation interventions that have adequate levels of usability and can reach this population. OBJECTIVE: The objective of this study was to report the rationale, ideation, design, user research, and final specifications of a novel smoking cessation app for people with serious mental illness (SMI) that will be tested in a feasibility trial...
January 16, 2018: JMIR Serious Games
https://www.readbyqxmd.com/read/29339059/moving-toward-rapid-and-low-cost-point-of-care-molecular-diagnostics-with-a-repurposed-3d-printer-and-rpa
#7
Kamfai Chan, Pui-Yan Wong, Chaitanya Parikh, Season Wong
Traditionally, the majority of nucleic acid amplification-based molecular diagnostic tests are done in centralized settings. In recent years, point-of-care tests have been developed for use in low-resource settings away from central laboratories. While most experts agree that point-of-care molecular tests are greatly needed, their availability as cost-effective and easy-to-operate tests remains an unmet goal. In this article, we discuss our efforts to develop a recombinase polymerase amplification reaction-based test that will meet these criteria...
January 12, 2018: Analytical Biochemistry
https://www.readbyqxmd.com/read/29338959/a-new-window-into-psychosis-the-rise-digital-phenotyping-smartphone-assessment-and-mobile-monitoring
#8
John Torous, Matcheri Keshavan
This commentary piece discusses recent advances in the use of mobile technologies like smartphone and wearable sensors for schizophrenia research. By framing both the opportunities as well as challenges for the field, this piece aims to frame the both current and future research efforts.
January 12, 2018: Schizophrenia Research
https://www.readbyqxmd.com/read/29338691/morca-ubiquitous-access-to-life-science-web-services
#9
Sergio Diaz-Del-Pino, Oswaldo Trelles, Juan Falgueras
BACKGROUND: Technical advances in mobile devices such as smartphones and tablets have produced an extraordinary increase in their use around the world and have become part of our daily lives. The possibility of carrying these devices in a pocket, particularly mobile phones, has enabled ubiquitous access to Internet resources. Furthermore, in the life sciences world there has been a vast proliferation of data types and services that finish as Web Services. This suggests the need for research into mobile clients to deal with life sciences applications for effective usage and exploitation...
January 16, 2018: BMC Genomics
https://www.readbyqxmd.com/read/29338173/a-smartphone-based-voc-sensor-using-colorimetric-polydiacetylenes
#10
Dong-Hoon Park, Jung-Moo Heo, Woomin Jeong, Young Hyuk Yoo, Bum Jun Park, Jong-Man Kim
Owing to a unique colorimetric (typically blue-to-red) feature upon environmental stimulation, polydiacetylene (PDAs) have been actively employed in chemosensor systems. We developed a highly accurate and simple volatile organic compound (VOC) sensor system that can be operated using a conventional smartphone. The procedure begins with forming an array of four different PDAs on conventional paper using inkjet printing of four corresponding diacetylenes (DAs) followed by photopolymerization. A database of color changes (i...
January 17, 2018: ACS Applied Materials & Interfaces
https://www.readbyqxmd.com/read/29337955/are-smartphones-really-destroying-the-adolescent-brain
#11
Carlin Flora
No abstract text is available yet for this article.
January 16, 2018: Scientific American
https://www.readbyqxmd.com/read/29337917/the-hydrocolor-app-above-water-measurements-of-remote-sensing-reflectance-and-turbidity-using-a-smartphone-camera
#12
Thomas Leeuw, Emmanuel Boss
HydroColor is a mobile application that utilizes a smartphone's camera and auxiliary sensors to measure the remote sensing reflectance of natural water bodies. HydroColor uses the smartphone's digital camera as a three-band radiometer. Users are directed by the application to collect a series of three images. These images are used to calculate the remote sensing reflectance in the red, green, and blue broad wavelength bands. As with satellite measurements, the reflectance can be inverted to estimate the concentration of absorbing and scattering substances in the water, which are predominately composed of suspended sediment, chlorophyll, and dissolved organic matter...
January 16, 2018: Sensors
https://www.readbyqxmd.com/read/29337912/social-incentive-mechanism-based-multi-user-sensing-time-optimization-in-co-operative-spectrum-sensing-with-mobile-crowd-sensing
#13
Xiaohui Li, Qi Zhu
Co-operative spectrum sensing emerging as a significant method to improve the utilization of the spectrum needs sufficient sensing users to participate. Existing related papers consider only the limited secondary users in current sensing system and assume that they will always perform the co-operative spectrum sensing out of obligation. However, this assumption is impractical in the realistic situation where the secondary users are rational and they will not join in the co-operative sensing process without a certain reward to compensate their sensing energy consumption, especially the ones who have no data transmitting in current time slot...
January 16, 2018: Sensors
https://www.readbyqxmd.com/read/29337883/problematic-smartphone-use-investigating-contemporary-experiences-using-a-convergent-design
#14
Daria J Kuss, Lydia Harkin, Eiman Kanjo, Joel Billieux
Internet-enabled smartphones are increasingly ubiquitous in the Western world. Research suggests a number of problems can result from mobile phone overuse, including dependence, dangerous and prohibited use. For over a decade, this has been measured by the Problematic Mobile Phone Use Questionnaire (PMPU-Q). Given the rapid developments in mobile technologies, changes of use patterns and possible problematic and addictive use, the aim of the present study was to investigate and validate an updated contemporary version of the PMPU-Q (PMPU-Q-R)...
January 16, 2018: International Journal of Environmental Research and Public Health
https://www.readbyqxmd.com/read/29336569/paper-based-dna-reader-for-visualized-quantification-of-soil-transmitted-helminth-infections
#15
Alex Guan Wang, Tianyu Dong, Hayam Mansour, Gabriela Matamoros, Ana L Sanchez, Feng Li
Soil-transmitted helminth (STH) infections are a global health issue affecting nearly one-third of the world's population. As most endemic areas of STH are impoverished countries or regions with limited healthcare resources, the accurate diagnosis of STH requires analytical tools that are not only quantitative, but also portable, inexpensive, and with no or minimal demand for external instrument. Herein, we introduce a novel paper-based diagnostic device, termed quantitative paper-based DNA reader (qPDR), capable of quantifying STH at the molecular level by measuring distance as readout, thus eliminating the need for external readers...
January 16, 2018: ACS Sensors
https://www.readbyqxmd.com/read/29335239/comparing-diet-and-exercise-monitoring-using-smartphone-app-and-paper-diary-a-two-phase-intervention-study
#16
Florence Jimoh, Elizabeth K Lund, Linda J Harvey, Catherine Frost, W James Lay, Mark A Roe, Rachel Berry, Paul M Finglas
BACKGROUND: There is increasing recognition that personalized approaches may be more effective in helping people establish healthier eating patterns and exercise more, and that this approach may be particularly effective in adolescents. OBJECTIVE: The objective of this study was to investigate the use of a smartphone app (FoodWiz2) in supporting healthy lifestyle choices in adolescence. METHODS: Participants (N=34: 11 male, 23 female) aged 16-19 years in full- or part-time education were recruited from sixth form colleges, schools, and other further education establishments in Norfolk and Suffolk, United Kingdom, between February and May 2015...
January 15, 2018: JMIR MHealth and UHealth
https://www.readbyqxmd.com/read/29335232/smartphone-app-using-mindfulness-meditation-for-women-with-chronic-pelvic-pain-memphis-protocol-for-a-randomized-feasibility-trial
#17
Elizabeth Ball, Sian Newton, Brennan C Kahan, Gordon Forbes, Neil Wright, Clara Cantalapiedra Calvete, Harry A L Gibson, Ewelina Rogozinska, Carol Rivas, Stephanie J C Taylor, Judy Birch, Julie Dodds
BACKGROUND: Female chronic pelvic pain (CPP) is defined as intermittent or constant pelvic or lower abdominal pain occurring in a woman for at least 6 months. Up to a quarter of women are estimated to be affected by CPP worldwide and it is responsible for one fifth of specialist gynecological referrals in the United Kingdom. Psychological interventions are commonly utilized. As waiting times and funding capacity impede access to face-to-face consultations, supported self-management (SSM) has emerged as a viable alternative...
January 15, 2018: JMIR Research Protocols
https://www.readbyqxmd.com/read/29334390/smartphone-integrated-optoelectrowetting-sioew-for-on-chip-sample-processing-and-microscopic-detection-of-water-quality
#18
Dongyue Jiang, Seunguk Lee, Sung Woo Bae, Sung-Yong Park
With the increasing capabilities and ubiquity of smartphones and their associated digital cameras, this study presents a smartphone integrated optoelectrowetting (SiOEW) device as a simple, portable tool capable of on-chip water sample preparation and microscopic detection of the target cells in water samples, which significantly reduce the detection time and the labor cost required for water quality monitoring. A commercially available smartphone is used as a low-intensity portable light source to perform optoelectrowetting (OEW)-based microfluidic operations such as droplet transportation, merging, mixing, and immobilization on a hydrophobic detection zone...
January 15, 2018: Lab on a Chip
https://www.readbyqxmd.com/read/29333352/smartphone-based-point-of-care-urinalysis-under-variable-illumination
#19
Moonsoo Ra, Mannan Saeed Muhammad, Chiawei Lim, Sehui Han, Chansung Jung, Whoi-Yul Kim
Urine tests are performed by using an off-the-shelf reference sheet to compare the color of test strips. However, the tabular representation is difficult to use and more prone to visual errors, especially when the reference color-swatches to be compared are spatially apart. Thus, making it is difficult to distinguish between the subtle differences of shades on the reagent pads. This manuscript represents a new arrangement of reference arrays for urine test strips (urinalysis). Reference color swatches are grouped in a doughnut chart, surrounding each reagent pad on the strip...
2018: IEEE Journal of Translational Engineering in Health and Medicine
https://www.readbyqxmd.com/read/29331693/disease-management-apps-and-technical-assistance-systems-for-bipolar-disorder-investigating-the-patients%C3%A2-point-of-view
#20
Henning Daus, Natalia Kislicyn, Stephan Heuer, Matthias Backenstrass
BACKGROUND: Smartphone-based disease management has become increasingly interesting for research in the field of bipolar disorders. This article investigates the attitudes of persons affected by this disorder towards the appropriation of mobile apps or assistance systems for the management of their disease. METHODS: We conducted two separate studies. Study 1 was an online survey with 88 participants. In study 2 we consulted 15 participants during a semi-structured interview...
January 2, 2018: Journal of Affective Disorders
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