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https://www.readbyqxmd.com/read/28227633/beacon-based-opportunistic-scheduling-in-wireless-body-area-network
#1
Yang Zhou, Zhengguo Sheng, Victor C M Leung, Peyman Servati, Yang Zhou, Zhengguo Sheng, Victor C M Leung, Peyman Servati, Yang Zhou, Zhengguo Sheng, Victor C M Leung, Peyman Servati
Wireless Body Area Networks (WBANs) are one of the key technologies that support the development of digital health care, which has attracted increasing attention in recent years. Compared with general Wireless Sensor Networks (WSNs), WBANs have more stringent requirements on reliability and energy efficiency. Though WBANs are applied within limited transmission range, the on-body channel condition can be very challenging because of blocking or absorbing of signal. In this paper, we are looking into the design of Medium Access Control (MAC) protocols and propose an opportunistic scheduling scheme by applying heuristic scheduling and dynamic superframe length adjustment to improve the system performance...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227620/routing-over-multi-hop-fading-wireless-body-area-networks-with-reliability-considerations
#2
Hussein Moosavi, Francis Minhthang Bui, Hussein Moosavi, Francis Minhthang Bui, Francis Minhthang Bui, Hussein Moosavi
Optimal reliable routing is studied in the context of fading wireless body area networks (WBANs). A non-cooperative game is proposed to model and analyze the strategic interactions among body-worn health-care devices when each seeks to find the most reliable path to the hub. A distributed algorithm based on the proposed game is provided and proved to converge to a multi-hop Pareto-dominant Nash topology. The game-theoretic framework is evaluated through numerical simulations in conditions approximating actual deployment of a moving ultra wideband WBAN...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227511/toward-a-distributed-free-floating-wireless-implantable-neural-recording-system
#3
Pyungwoo Yeon, Xingyuan Tong, Byunghun Lee, Abdollah Mirbozorgi, Bruce Ash, Helmut Eckhardt, Maysam Ghovanloo, Pyungwoo Yeon, Xingyuan Tong, Byunghun Lee, Abdollah Mirbozorgi, Bruce Ash, Helmut Eckhardt, Maysam Ghovanloo, Maysam Ghovanloo, Byunghun Lee, Bruce Ash, Xingyuan Tong, Pyungwoo Yeon, Abdollah Mirbozorgi, Helmut Eckhardt
To understand the complex correlations between neural networks across different regions in the brain and their functions at high spatiotemporal resolution, a tool is needed for obtaining long-term single unit activity (SUA) across the entire brain area. The concept and preliminary design of a distributed free-floating wireless implantable neural recording (FF-WINeR) system are presented, which can enabling SUA acquisition by dispersedly implanting tens to hundreds of untethered 1 mm(3) neural recording probes, floating with the brain and operating wirelessly across the cortical surface...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28227161/in-to-out-body-path-loss-for-wireless-radio-frequency-capsule-endoscopy-in-a-human-body
#4
G Vermeeren, E Tanghe, A Thielens, L Martens, W Joseph, G Vermeeren, E Tanghe, A Thielens, L Martens, W Joseph, E Tanghe, A Thielens, L Martens, G Vermeeren, W Joseph
Physical-layer characterization is important for design of in-to-out body communication for wireless body area networks (WBANs). This paper numerically investigates the path loss of an in-to-out body radio frequency (RF) wireless link between an endoscopy capsule and a receiver outside the body using a 3D electromagnetic solver. A spiral antenna in the endoscopy capsule is tuned to operate in the Medical Implant Communication Service (MICS) band at 402 MHz, accounting for the properties of the human body. The influence of misalignment, rotation of the capsule, and human body model are investigated...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28226877/a-wearable-biofeedback-control-system-based-body-area-network-for-freestyle-swimming
#5
Rui Li, Zibo Cai, WeeSit Lee, Daniel T H Lai, Rui Li, Zibo Cai, WeeSit Lee, Daniel T H Lai, WeeSit Lee, Daniel T H Lai, Rui Li, Zibo Cai
Wearable posture measurement units are capable of enabling real-time performance evaluation and providing feedback to end users. This paper presents a wearable feedback prototype designed for freestyle swimming with focus on trunk rotation measurement. The system consists of a nine-degree-of-freedom inertial sensor, which is built in a central data collection and processing unit, and two vibration motors for delivering real-time feedback. Theses devices form a fundamental body area network (BAN). In the experiment setup, four recreational swimmers were asked to do two sets of 4 x 25m freestyle swimming without and with feedback provided respectively...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28209409/interplay-between-river-dynamics-and-international-borders-the-hirmand-river-between-iran-and-afghanistan
#6
Saleh Yousefi, Saskia Keesstra, Hamid Reza Pourghasemi, Nicola Surian, Somayeh Mirzaee
Fluvial dynamics in riverine borders can play an important role in political relationships between countries. Rivers move and evolve under the influence of natural processes and external drivers (e.g. land use change in river catchments). The Hirmand River is an important riverine border between Iran and Afghanistan. The present study shows the evolution and lateral shifting of the Hirmand River along the international border (25.6km) over a period of 6 decades (1955-2015). Seven data series of aerial photos, topographic maps and Landsat images were used to analyze land cover and channel changes in the study reach...
February 13, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/28208285/determining-gender-by-raman-spectroscopy-of-a-bloodstain
#7
Aliaksandra Sikirzhytskaya, Vitali Sikirzhytski, Igor K Lednev
The development of novel methods for forensic science is a constantly growing area of modern analytical chemistry. Raman spectroscopy is one of a few analytical techniques capable of nondestructive and nearly instantaneous analysis of a wide variety of forensic evidence, including body fluid stains, at the scene of a crime. In this proof-of-concept study, Raman microspectroscopy was utilized for gender identification based on dry bloodstains. Raman spectra were acquired in mapping mode from multiple spots on a bloodstain to account for intrinsic sample heterogeneity...
February 7, 2017: Analytical Chemistry
https://www.readbyqxmd.com/read/28202595/image-based-modelling-of-skeletal-muscle-oxygenation
#8
REVIEW
B Zeller-Plumhoff, T Roose, G F Clough, P Schneider
The supply of oxygen in sufficient quantity is vital for the correct functioning of all organs in the human body, in particular for skeletal muscle during exercise. Disease is often associated with both an inhibition of the microvascular supply capability and is thought to relate to changes in the structure of blood vessel networks. Different methods exist to investigate the influence of the microvascular structure on tissue oxygenation, varying over a range of application areas, i.e. biological in vivo and in vitro experiments, imaging and mathematical modelling...
February 2017: Journal of the Royal Society, Interface
https://www.readbyqxmd.com/read/28199450/association-between-smoking-status-preoperative-exhaled-carbon-monoxide-levels-and-postoperative-surgical-site-infection-in-patients-undergoing-elective-surgery
#9
Margaret B Nolan, David P Martin, Rodney Thompson, Darrell R Schroeder, Andrew C Hanson, David O Warner
Importance: Cigarette smoking is a risk factor for many perioperative complications, including surgical site infection (SSI). The duration of abstinence from smoking required to reduce this risk is unknown. Objectives: To evaluate if abstinence from smoking on the day of surgery is associated with a decreased frequency of SSI in patients who smoke cigarettes and to confirm that smoking is significantly independently associated with SSI when adjustment is made for potentially relevant covariates, such as body mass index...
February 15, 2017: JAMA Surgery
https://www.readbyqxmd.com/read/28169114/coculturing-with-endothelial-cells-promotes-in-vitro-maturation-and-electrical-coupling-of-human-embryonic-stem-cell-derived-cardiomyocytes
#10
Jennifer Pasquier, Renuka Gupta, Damien Rioult, Jessica Hoarau-Véchot, Raphael Courjaret, Khaled Machaca, Jassim Al Suwaidi, Edouard G Stanley, Shahin Rafii, David A Elliott, Charbel Abi Khalil, Arash Rafii
BACKGROUND: Pluripotent human embryonic stem cells (hESC) are a promising source of repopulating cardiomyocytes. We hypothesized that we could improve maturation of cardiomyocytes and facilitate electrical interconnections by creating a model that more closely resembles heart tissue; that is, containing both endothelial cells (ECs) and cardiomyocytes. METHODS: We induced cardiomyocyte differentiation in the coculture of an hESC line expressing the cardiac reporter NKX2...
January 10, 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/28168878/network-marker-selection-for-untargeted-lc-ms-metabolomics-data
#11
Qingpo Cai, Jessica A Alvarez, Jian Kang, Tianwei Yu
Untargeted metabolomics using high-resolution liquid chromatography - mass spectrometry (LC-MS) is becoming one of the major areas of high-throughput biology. Functional analysis, i.e. analyzing the data based on metabolic pathways or the genome-scale metabolic network, is critical in feature selection and interpretation of metabolomics data. One of the main challenges in the functional analyses is the lack of the feature identity in the LC-MS data itself. By matching mass-to-charge ratio (m/z) values of the features to theoretical values derived from known metabolites, some features can be matched to one or more known metabolites...
February 7, 2017: Journal of Proteome Research
https://www.readbyqxmd.com/read/28167905/a-possible-role-of-prolonged-whirling-episodes-on-structural-plasticity-of-the-cortical-networks-and-altered-vertigo-perception-the-cortex-of-sufi-whirling-dervishes
#12
Yusuf O Cakmak, Gazanfer Ekinci, Armin Heinecke, Safiye Çavdar
Although minutes of a spinning episode may induce vertigo in the healthy human, as a result of a possible perceptional plasticity, Sufi Whirling Dervishes (SWDs) can spin continuously for an hour without a vertigo perception.This unique long term vestibular system stimulation presents a potential human model to clarify the cortical networks underlying the resistance against vertigo. This study, therefore, aimed to investigate the potential structural cortical plasticity in SWDs. Magnetic resonance imaging (MRI) of 10 SWDs and 10 controls were obtained, using a 3T scanner...
2017: Frontiers in Human Neuroscience
https://www.readbyqxmd.com/read/28167792/ghrelin-affects-stopover-decisions-and-food-intake-in-a-long-distance-migrant
#13
Wolfgang Goymann, Sara Lupi, Hiroyuki Kaiya, Massimiliano Cardinale, Leonida Fusani
Billions of birds migrate long distances to either reach breeding areas or to spend the winter at more benign places. On migration, most passerines frequently stop over to rest and replenish their fuel reserves. To date, we know little regarding how they decide that they are ready to continue their journey. What physiological signals tell a bird's brain that its fuel reserves are sufficient to resume migration? A network of hormones regulates food intake and body mass in vertebrates, including the recently discovered peptide hormone, ghrelin...
February 6, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28163356/comparing-three-data-mining-methods-to-predict-kidney-transplant-survival
#14
Leila Shahmoradi, Mostafa Langarizadeh, Gholamreza Pourmand, Ziba Aghsaei Fard, Alireza Borhani
INTRODUCTION: One of the most important complications of post-transplant is rejection. Analyzing survival is one of the areas of medical prognosis and data mining, as an effective approach, has the capacity of analyzing and estimating outcomes in advance through discovering appropriate models among data. The present study aims at comparing the effectiveness of C5.0 algorithms, neural network and C&RTree to predict kidney transplant survival before transplant. METHOD: To detect factors effective in predicting transplant survival, information needs analysis was performed via a researcher-made questionnaire...
October 2016: Acta Informatica Medica: AIM
https://www.readbyqxmd.com/read/28159269/characterization-of-lentinus-edodes-%C3%AE-glucan-influencing-the-in-vitro-starch-digestibility-of-wheat-starch-gel
#15
Haining Zhuang, Zhongqiu Chen, Tao Feng, Yan Yang, Jingsong Zhang, Guodong Liu, Zhaofeng Li, Ran Ye
Lentinus edodes β-glucan (abbreviated LEBG) was prepared from fruiting bodies of Lentinus edodes. The average molecular weight (Mw) and polydispersity index (Mw/Mn) of LEBG were measured to be 1.868×10(6)g/mol and 1.007, respectively. In addition, the monosaccharide composition of LEBG was composed of arabinose, galactose, glucose, xylose, mannose with a molar ratio of 5:11:18:644:16. After adding LEBG, both G' and G″ of starch gel increased. This is mainly because the connecting points between the molecular chains of LEBG and starch formed so that gel network structures were enhanced...
June 1, 2017: Food Chemistry
https://www.readbyqxmd.com/read/28152942/communities-of-practice-a-jurisdictional-approach-to-improving-the-quality-of-care-in-radiation-medicine-in-ontario
#16
Michelle Ang, Lindsay Elizabeth Reddeman, Michael Sharpe, Margaret Hart, Carina Simniceanu, Stephen Breen, Joon-Hyung J Kim, Dani Scott, Khaled Zaza, David D'Souza, Michael F Milosevic, Stewart Gaede, Andrea Marshall, Brian P Yaremko, Katharina Sixel, Nicole Harnett, Eric Gutierrez, Padraig Richard Warde
: 122 Background: The Radiation Treatment Program (RTP) at Cancer Care Ontario (CCO) established several Communities of Practice (CoPs), with the goal of improving radiation treatment (RT) quality and safety. The RTP identifies variation in practice and quality improvement (QI) opportunities in the 14 Regional Cancer Centres (RCCs) and facilitates the development of CoPs to share best practices and standardize care. METHODS: Since 2010, the RTP has formed 7 CoPs ( > 185 members in total): 4 intra-disciplinary (Radiation Therapy, Medical Physics, Advanced Practice Radiation Therapy, Radiation Safety) and 3 inter-disciplinary (Head and Neck (HN), Gynecological (GYNE) and Lung Cancer)...
March 2016: Journal of Clinical Oncology: Official Journal of the American Society of Clinical Oncology
https://www.readbyqxmd.com/read/28148239/local-descriptive-body-weight-and-dietary-norms-food-availability-and-10-year-change-in-glycosylated-haemoglobin-in-an-australian-population-based-biomedical-cohort
#17
Suzanne J Carroll, Catherine Paquet, Natasha J Howard, Neil T Coffee, Robert J Adams, Anne W Taylor, Theo Niyonsenga, Mark Daniel
BACKGROUND: Individual-level health outcomes are shaped by environmental risk conditions. Norms figure prominently in socio-behavioural theories yet spatial variations in health-related norms have rarely been investigated as environmental risk conditions. This study assessed: 1) the contributions of local descriptive norms for overweight/obesity and dietary behaviour to 10-year change in glycosylated haemoglobin (HbA1c), accounting for food resource availability; and 2) whether associations between local descriptive norms and HbA1c were moderated by food resource availability...
February 2, 2017: BMC Public Health
https://www.readbyqxmd.com/read/28141841/throughput-assurance-of-wireless-body-area-networks-coexistence-based-on-stochastic-geometry
#18
Ruixia Liu, Yinglong Wang, Minglei Shu, Shangbin Wu
Wireless body area networks (WBANs) are expected to influence the traditional medical model by assisting caretakers with health telemonitoring. Within WBANs, the transmit power of the nodes should be as small as possible owing to their limited energy capacity but should be sufficiently large to guarantee the quality of the signal at the receiving nodes. When multiple WBANs coexist in a small area, the communication reliability and overall throughput can be seriously affected due to resource competition and interference...
2017: PloS One
https://www.readbyqxmd.com/read/28134853/ieee-802-15-4-frame-aggregation-enhancement-to-provide-high-performance-in-life-critical-patient-monitoring-systems
#19
Muhammad Sajjad Akbar, Hongnian Yu, Shuang Cang
In wireless body area sensor networks (WBASNs), Quality of Service (QoS) provision for patient monitoring systems in terms of time-critical deadlines, high throughput and energy efficiency is a challenging task. The periodic data from these systems generates a large number of small packets in a short time period which needs an efficient channel access mechanism. The IEEE 802.15.4 standard is recommended for low power devices and widely used for many wireless sensor networks applications. It provides a hybrid channel access mechanism at the Media Access Control (MAC) layer which plays a key role in overall successful transmission in WBASNs...
January 28, 2017: Sensors
https://www.readbyqxmd.com/read/28133389/the-impact-of-logging-roads-on-dung-beetle-assemblages-in-a-tropical-rainforest-reserve
#20
Felicity A Edwards, Jessica Finan, Lucy K Graham, Trond H Larsen, David S Wilcove, Wayne W Hsu, V K Chey, Keith C Hamer
The demand for timber products is facilitating the degradation and opening up of large areas of intact habitats rich in biodiversity. Logging creates an extensive network of access roads within the forest, yet these are commonly ignored or excluded when assessing impacts of logging on forest biodiversity. Here we determine the impact of these roads on the overall condition of selectively logged forests in Borneo, Southeast Asia. Focusing on dung beetles along > 40 km logging roads we determine: (i) the magnitude and extent of edge effects alongside logging roads; (ii) whether vegetation characteristics can explain patterns in dung beetle communities, and; (iii) how the inclusion of road edge forest impacts dung beetle assemblages within the overall logged landscape...
January 2017: Biological Conservation
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