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https://www.readbyqxmd.com/read/28397765/estimation-of-antenna-pose-in-the-earth-frame-using-camera-and-imu-data-from-mobile-phones
#1
Zhen Wang, Bingwen Jin, Weidong Geng
The poses of base station antennas play an important role in cellular network optimization. Existing methods of pose estimation are based on physical measurements performed either by tower climbers or using additional sensors attached to antennas. In this paper, we present a novel non-contact method of antenna pose measurement based on multi-view images of the antenna and inertial measurement unit (IMU) data captured by a mobile phone. Given a known 3D model of the antenna, we first estimate the antenna pose relative to the phone camera from the multi-view images and then employ the corresponding IMU data to transform the pose from the camera coordinate frame into the Earth coordinate frame...
April 8, 2017: Sensors
https://www.readbyqxmd.com/read/28391194/acoustic-wave-filter-technology-a-review
#2
Clemens Ruppel
Today, acoustic filters are the filter technology to meet the requirements with respect to performance dictated by the cellular phone standards and their form factor. Around 2 billion cellular phones are sold every year, and smart phones are of a very high percentage of approximately two thirds. Smart phones require a very high number of filter functions ranging from the low double-digit range up to almost triple digit numbers in the near future. In the frequency range up to 1 GHz surface acoustic wave (SAW) filters are almost exclusively employed, while in the higher frequency range bulk acoustic wave (BAW) and SAW filters are competing for their shares...
April 4, 2017: IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control
https://www.readbyqxmd.com/read/28382765/factors-influencing-blood-donation-a-cross-sectional-survey-in-guangzhou-china
#3
J Ou-Yang, C-H Bei, B He, X Rong
OBJECTIVES: The present study aimed to determine major factors that influence blood donation in China. BACKGROUND: Factors affecting blood donation often vary in various populations. METHODS: This cross-sectional study used self-administered, standardised, structured questionnaires to survey selected donors and non-donors in Guangzhou, China between 10 December 2013 and 25 June 2014. RESULTS: Among the 1080 questionnaires collected, 1034 (95·7%) questionnaires were valid for this analysis, including 602 donors and 432 non-donors...
April 6, 2017: Transfusion Medicine
https://www.readbyqxmd.com/read/28375380/compact-and-field-portable-3d-printed-shearing-digital-holographic-microscope-for-automated-cell-identification
#4
Siddharth Rawat, Satoru Komatsu, Adam Markman, Arun Anand, Bahram Javidi
We propose a low-cost, compact, and field-portable 3D printed holographic microscope for automated cell identification based on a common path shearing interferometer setup. Once a hologram is captured from the portable setup, a 3D reconstructed height profile of the cell is created. We extract several morphological cell features from the reconstructed 3D height profiles, including mean physical cell thickness, coefficient of variation, optical volume (OV) of the cell, projected area of the cell (PA), ratio of PA to OV, cell thickness kurtosis, cell thickness skewness, and the dry mass of the cell for identification using the random forest (RF) classifier...
March 20, 2017: Applied Optics
https://www.readbyqxmd.com/read/28203122/evaluation-of-the-effect-of-radiofrequency-radiation-emitted-from-wi-fi-router-and-mobile-phone-simulator-on-the-antibacterial-susceptibility-of-pathogenic-bacteria-listeria-monocytogenes-and-escherichia-coli
#5
M Taheri, S M J Mortazavi, M Moradi, S Mansouri, G R Hatam, F Nouri
Mobile phones and Wi-Fi radiofrequency radiation are among the main sources of the exposure of the general population to radiofrequency electromagnetic fields (RF-EMF). Previous studies have shown that exposure of microorganisms to RF-EMFs can be associated with a wide spectrum of changes ranged from the modified bacterial growth to the alterations of the pattern of antibiotic resistance. Our laboratory at the nonionizing department of the Ionizing and Non-ionizing Radiation Protection Research Center has performed experiments on the health effects of exposure to animal models and humans to different sources of electromagnetic fields such as cellular phones, mobile base stations, mobile phone jammers, laptop computers, radars, dentistry cavitrons, magnetic resonance imaging, and Helmholtz coils...
January 2017: Dose-response: a Publication of International Hormesis Society
https://www.readbyqxmd.com/read/28144597/the-fundamental-reasons-why-laptop-computers-should-not-be-used-on-your-lap
#6
S A R Mortazavi, S Taeb, S M J Mortazavi, S Zarei, M Haghani, P Habibzadeh, M B Shojaei-Fard
As a tendency to use new technologies, gadgets such as laptop computers are becoming more popular among students, teachers, businessmen and office workers. Today laptops are a great tool for education and learning, work and personal multimedia. Millions of men, especially those in the reproductive age, are frequently using their laptop computers on the lap (thigh). Over the past several years, our lab has focused on the health effects of exposure to different sources of electromagnetic fields such as cellular phones, mobile base stations, mobile phone jammers, laptop computers, radars, dentistry cavitrons and Magnetic Resonance Imaging (MRI)...
December 2016: Journal of Biomedical Physics & Engineering
https://www.readbyqxmd.com/read/28138415/wireless-web-based-interactive-control-of-optical-coherence-tomography-with-mobile-devices
#7
Rajvi Mehta, Derek Nankivil, David J Zielinski, Gar Waterman, Brenton Keller, Alexander T Limkakeng, Regis Kopper, Joseph A Izatt, Anthony N Kuo
PURPOSE: Optical coherence tomography (OCT) is widely used in ophthalmology clinics and has potential for more general medical settings and remote diagnostics. In anticipation of remote applications, we developed wireless interactive control of an OCT system using mobile devices. METHODS: A web-based user interface (WebUI) was developed to interact with a handheld OCT system. The WebUI consisted of key OCT displays and controls ported to a webpage using HTML and JavaScript...
January 2017: Translational Vision Science & Technology
https://www.readbyqxmd.com/read/28103120/compassionate-options-for-pediatric-ems-cope-addressing-communication-skills
#8
Aaron W Calhoun, Erica R H Sutton, Anita P Barbee, Beth McClure, Carrie Bohnert, Richard Forest, Peter Taillac, Mary E Fallat
INTRODUCTION: Each year, 16,000 children suffer cardiopulmonary arrest, and in one urban study, 2% of pediatric EMS calls were attributed to pediatric arrests. This indicates a need for enhanced educational options for prehospital providers that address how to communicate to families in these difficult situations. In response, our team developed a cellular phone digital application (app) designed to assist EMS providers in self-debriefing these events, thereby improving their communication skills...
January 19, 2017: Prehospital Emergency Care
https://www.readbyqxmd.com/read/28068624/measuring-a-conceptual-model-of-the-relationship-between-compulsive-cell-phone-use-in-vehicle-cell-phone-use-and-motor-vehicle-crash
#9
Stephen S O'Connor, Lindsey M Shain, Jennifer M Whitehill, Beth E Ebel
OBJECTIVES: Previous research suggests that anticipation of incoming phone calls or messages and impulsivity are significantly associated with motor vehicle crash. We took a more explanative approach to investigate a conceptual model regarding the direct and indirect effect of compulsive cell phone use and impulsive personality traits on crash risk. METHODS: We recruited a sample of 307 undergraduate college students to complete an online survey that included measures of cell phone use, impulsivity, and history of motor vehicle crash...
February 2017: Accident; Analysis and Prevention
https://www.readbyqxmd.com/read/27973228/info-diabetic-approach-from-cellular-phone-text-massaging-can-minimize-the-complexities-in-diabetic-patient-care
#10
N Kumar, B K Gupta
No abstract text is available yet for this article.
November 2016: Value in Health: the Journal of the International Society for Pharmacoeconomics and Outcomes Research
https://www.readbyqxmd.com/read/27960592/mobile-phone-radiation-induced-perturbation-of-gene-expression-profiling-redox-equilibrium-and-sporadic-apoptosis-control-in-the-ovary-of-drosophila-melanogaster
#11
Areti K Manta, Deppie Papadopoulou, Alexander P Polyzos, Adamantia F Fragopoulou, Aikaterini S Skouroliakou, Dimitris Thanos, Dimitrios J Stravopodis, Lukas H Margaritis
The daily use by people of wireless communication devices has increased exponentially in the last decade, begetting concerns regarding its potential health hazards. Drosophila melanogaster four days-old adult female flies were exposed for 30 min to radiation emitted by a commercial mobile phone at a SAR of 0.15 W/kg and a SAE of 270 J/kg. ROS levels and apoptotic follicles were assayed in parallel with a genome-wide microarrays analysis. ROS cellular contents were found to increase by 1.6-fold (x), immediately after the end of exposure, in follicles of pre-choriogenic stages (germarium - stage 10), while sporadically generated apoptotic follicles (germarium 2b and stages 7-9) presented with an averaged 2x upregulation in their sub-population mass, 4 h after fly's irradiation with mobile device...
April 3, 2017: Fly
https://www.readbyqxmd.com/read/27941049/understanding-the-reasons-for-loss-to-follow-up-in-patients-with-glaucoma-at-a-tertiary-referral-teaching-hospital-in-korea
#12
Young Kook Kim, Jin Wook Jeoung, Ki Ho Park
BACKGROUND/AIMS: To assess the reasons and factors for discontinuation of follow-up among patients with glaucoma at a tertiary referral teaching hospital in Seoul, Korea. METHODS: We identified all adult patients with glaucoma (≥18 years), who had visited the glaucoma clinic of Seoul National University Hospital between April 2012 and March 2014 and had missed an appointment by at least 12 months. These patients were traced via cellular phone, and their true status and reasons for discontinuation of follow-up were documented...
December 9, 2016: British Journal of Ophthalmology
https://www.readbyqxmd.com/read/27919439/associations-between-physical-activity-and-semen-quality-in-young-healthy-men
#13
Paweł Jóźków, Marek Mędraś, Felicja Lwow, Aleksandra Zagrodna, Małgorzata Słowińska-Lisowska
OBJECTIVE: To evaluate whether the level of everyday physical activity is associated with semen quality in young men. DESIGN: Cross-sectional study. SETTING: Universities, clubs, and societies. PATIENT(S): Young healthy men (aged 18-35 years) with unknown fertility (n = 177). INTERVENTIONS(S): Collection of data on medical history, lifestyle factors (physical activity, nutrition, addictions), and environmental threats (exposure of gonads to cellular phones, laptops)...
February 2017: Fertility and Sterility
https://www.readbyqxmd.com/read/27855666/prevalence-and-correlates-of-problematic-smartphone-use-in-a-large-random-sample-of-chinese-undergraduates
#14
Jiang Long, Tie-Qiao Liu, Yan-Hui Liao, Chang Qi, Hao-Yu He, Shu-Bao Chen, Joël Billieux
BACKGROUND: Smartphones are becoming a daily necessity for most undergraduates in Mainland China. Because the present scenario of problematic smartphone use (PSU) is largely unexplored, in the current study we aimed to estimate the prevalence of PSU and to screen suitable predictors for PSU among Chinese undergraduates in the framework of the stress-coping theory. METHODS: A sample of 1062 undergraduate smartphone users was recruited by means of the stratified cluster random sampling strategy between April and May 2015...
November 17, 2016: BMC Psychiatry
https://www.readbyqxmd.com/read/27854186/comparison-of-a-smartphone-based-photographic-method-with-face-to-face-caries-assessment-a-mobile-teledentistry-model
#15
Mohamed Estai, Yogesan Kanagasingam, Boyen Huang, Julia Shiikha, Estie Kruger, Stuart Bunt, Marc Tennant
OBJECTIVES: This study sought to evaluate the efficacy of a mobile teledentistry approach using a smartphone camera for remote screening of dental caries. MATERIALS AND METHODS: An image acquisition Android App was created to facilitate the acquisition and transmission of dental images to a store-and-forward based telemedicine server. One hundred participants who were attending routine checkups at dental clinics were enrolled in 2014. Following a face-to-face oral screening by a screener (dentist), images of patients' teeth were obtained using a smartphone camera...
November 17, 2016: Telemedicine Journal and E-health: the Official Journal of the American Telemedicine Association
https://www.readbyqxmd.com/read/27747544/texting-while-driving-the-development-and-validation-of-the-distracted-driving-survey-and-risk-score-among-young-adults
#16
Regan W Bergmark, Emily Gliklich, Rong Guo, Richard E Gliklich
BACKGROUND: Texting while driving and other cell-phone reading and writing activities are high-risk activities associated with motor vehicle collisions and mortality. This paper describes the development and preliminary evaluation of the Distracted Driving Survey (DDS) and score. METHODS: Survey questions were developed by a research team using semi-structured interviews, pilot-tested, and evaluated in young drivers for validity and reliability. Questions focused on texting while driving and use of email, social media, and maps on cellular phones with specific questions about the driving speeds at which these activities are performed...
December 2016: Injury Epidemiology
https://www.readbyqxmd.com/read/27744159/estimation-of-obsolete-cellular-phones-generation-a-case-study-of-china
#17
Xueyi Guo, Kang Yan
Rapid development of electronic technique has led to decreasing lifespan of electronic products. Meanwhile, the amount of waste electrical and electronic equipment (WEEE) is rapidly growing in recent years especially in China. The generation amount of WEEE is one of the basic information for waste management. In our study, the generation of obsolete cellular phones and metals containing of cellular phones were estimated from 1997 to 2025. The future average possession in per 100 inhabitants of cellular phones was predicted using logistic model...
January 1, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/27738269/radiofrequency-radiation-900-mhz-induced-dna-damage-and-cell-cycle-arrest-in-testicular-germ-cells-in-swiss-albino-mice
#18
Neelam Pandey, Sarbani Giri, Samrat Das, Puja Upadhaya
Even though there are contradictory reports regarding the cellular and molecular changes induced by mobile phone emitted radiofrequency radiation (RFR), the possibility of any biological effect cannot be ruled out. In view of a widespread and extensive use of mobile phones, this study evaluates alterations in male germ cell transformation kinetics following RFR exposure and after recovery. Swiss albino mice were exposed to RFR (900 MHz) for 4 h and 8 h duration per day for 35 days. One group of animals was terminated after the exposure period, while others were kept for an additional 35 days post-exposure...
April 2017: Toxicology and Industrial Health
https://www.readbyqxmd.com/read/27725788/an-efficient-power-harvesting-mobile-phone-based-electrochemical-biosensor-for-point-of-care-health-monitoring
#19
Alexander C Sun, Chengyang Yao, A G Venkatesh, Drew A Hall
Cellular phone penetration has grown continually over the past two decades with the number of connected devices rapidly approaching the total world population. Leveraging the worldwide ubiquity and connectivity of these devices, we developed a mobile phone-based electrochemical biosensor platform for point-of-care (POC) diagnostics and wellness tracking. The platform consists of an inexpensive electronic module (< $20) containing a low-power potentiostat that interfaces with and efficiently harvests power from a wide variety of phones through the audio jack...
November 1, 2016: Sensors and Actuators. B, Chemical
https://www.readbyqxmd.com/read/27687466/assessing-electronic-interruptions-experienced-by-an-anesthesiology-clinical-director
#20
Thomas E Schulte, Ellen K Roberts, Kristina Birch, Steven J Lisco
STUDY OBJECTIVE: The purpose of this study was to assess the workflow interruptions on an anesthesiology clinical director (CD). By assessing the interruptions on the CD, we hypothesize that these frequent interruptions would prohibit the CD from medical direction of residents or certified nurse anesthetists in operating rooms. DESIGN: Cellular phone data were obtained from Verizon Wireless statements over 10 months, August 2012 through May 2013. These data were from a single cellular phone carried by the anesthesia CD and subsequent overnight anesthesiologist 24 hours a day...
November 2016: Journal of Clinical Anesthesia
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