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https://www.readbyqxmd.com/read/29315858/understanding-successful-and-unsuccessful-landings-of-aerial-manoeuvre-variations-in-professional-surfing
#1
James R Forsyth, Diane L Riddiford-Harland, John W Whitting, Jeremy M Sheppard, Julie R Steele
Although performing aerial manoeuvres can increase wave score and winning potential in competitive surfing, the critical features underlying successful aerial performance have not been systematically investigated. This study aimed to analyse highly skilled aerial manoeuvre performance and identify the critical features associated with successful or unsuccessful landing. Using video recordings of the World Surf League's Championship Tour, every aerial performed during the quarterfinal, semi-final and final heats from the 11 events in the 2015 season were viewed...
January 9, 2018: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29306646/characterizing-surf-zone-injuries-from-the-five-most-populated-beaches-on-the-atlantic-fronting-delaware-coast-delaware-surf-zone-injury-demographics
#2
Matthew B Doelp, Jack A Puleo, Paul Cowan, Michelle Arford-Granholm
INTRODUCTION: Beaches are a popular destination for recreation activities. Surf zone injuries (SZI) can occur resulting from a variety of in-water activities. Little is known regarding the sustained injury types, or demographics of injured persons and activities leading to injuries. METHODS: This study examines the distribution of SZI types, activities and populations occurring on Delaware Beaches as recorded by a local level III trauma center (Department of Emergency Medicine at Beebe Healthcare in Lewes, Delaware)...
December 24, 2017: American Journal of Emergency Medicine
https://www.readbyqxmd.com/read/29275419/family-related-stress-versus-external-stressors-differential-impacts-on-alcohol-and-illicit-drug-use-in-young-men
#3
Ansgar Rougemont-Bücking, Veronique S Grazioli, Jean-Bernard Daeppen, Gerhard Gmel, Joseph Studer
Intense stress increases substance use (SU). However, little is known about the extent to which distinctive forms of stress should be weighted with regard to their effects on SU. This study aimed to determine whether family-related stress factors (FSF) influenced SU in a different way than external stress factors (ESF). Data was drawn from a Swiss cohort study on SU risk factors (C-SURF), involving 5,308 young adult men. Twelve month use of alcohol and of illicit substances was assessed. FSF and ESF for the time period preceding SU were measured...
December 22, 2017: European Addiction Research
https://www.readbyqxmd.com/read/29260829/capillary-flow-and-mechanical-buckling-in-a-growing-annular-bacterial-colony
#4
Tieyan Si, Zidong Ma, Jay X Tang
A growing bacterial colony is a dense suspension of an increasing number of cells capable of individual as well as collective motion. After inoculating Pseudomonas aeruginosa over an annular area on an agar plate, we observe the growth and spread of the bacterial population, and model the process by considering the physical effects that account for the features observed. Over a course of 10-12 hours, the majority of bacteria migrate to and accumulate at the edges. We model the capillary flow induced by imbalanced evaporation flux as the cause for the accumulation, much like the well-known coffee stain phenomenon...
December 20, 2017: Soft Matter
https://www.readbyqxmd.com/read/29239996/upper-body-strength-measures-and-pop-up-performance-of-stronger-and-weaker-surfers
#5
Joanna Parsonage, Josh L Secomb, Jeremy M Sheppard, Brendon K Ferrier, Rebecca A Dowse, Sophia Nimphius
The primary purpose of this study was to investigate the reliability of the isometric push-up (IPU), dynamic push-up (DPU), and force plate pop-up (FP POP) as measures of upper-body isometric and dynamic strength qualities in surfing athletes. Furthermore, the study aimed to compare pop-up performance between stronger and weaker surfers. Eighteen female (n=9) and male (n=9) surfers (age=28.1±6.4 yrs, mass=69.6±10.4 kg, height=172.5±6.7 cm) completed a battery of upper-body strength assessments, of which exhibited high between-day reliability: (IPU, (CV%=4...
December 11, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29192227/conservation-of-nonsense-mediated-mrna-decay-complex-components-throughout-eukaryotic-evolution
#6
Barry Causier, Zhen Li, Riet De Smet, James P B Lloyd, Yves Van de Peer, Brendan Davies
Nonsense-mediated mRNA decay (NMD) is an essential eukaryotic process regulating transcript quality and abundance, and is involved in diverse processes including brain development and plant defenses. Although some of the NMD machinery is conserved between kingdoms, little is known about its evolution. Phosphorylation of the core NMD component UPF1 is critical for NMD and is regulated in mammals by the SURF complex (UPF1, SMG1 kinase, SMG8, SMG9 and eukaryotic release factors). However, since SMG1 is reportedly missing from the genomes of fungi and the plant Arabidopsis thaliana, it remains unclear how UPF1 is activated outside the metazoa...
November 30, 2017: Scientific Reports
https://www.readbyqxmd.com/read/29190737/a-short-feature-vector-for-image-matching-the-log-polar-magnitude-feature-descriptor
#7
Damian J Matuszewski, Anders Hast, Carolina Wählby, Ida-Maria Sintorn
The choice of an optimal feature detector-descriptor combination for image matching often depends on the application and the image type. In this paper, we propose the Log-Polar Magnitude feature descriptor-a rotation, scale, and illumination invariant descriptor that achieves comparable performance to SIFT on a large variety of image registration problems but with much shorter feature vectors. The descriptor is based on the Log-Polar Transform followed by a Fourier Transform and selection of the magnitude spectrum components...
2017: PloS One
https://www.readbyqxmd.com/read/29190659/a-digital-memories-based-user-authentication-scheme-with-privacy-preservation
#8
JunLiang Liu, Qiuyun Lyu, Qiuhua Wang, Xiangxiang Yu
The traditional username/password or PIN based authentication scheme, which still remains the most popular form of authentication, has been proved insecure, unmemorable and vulnerable to guessing, dictionary attack, key-logger, shoulder-surfing and social engineering. Based on this, a large number of new alternative methods have recently been proposed. However, most of them rely on users being able to accurately recall complex and unmemorable information or using extra hardware (such as a USB Key), which makes authentication more difficult and confusing...
2017: PloS One
https://www.readbyqxmd.com/read/29175280/surfing-as-a-risk-factor-for-sensitization-to-poly-%C3%AE-glutamic-acid-in-fermented-soybeans-natto-allergy
#9
Naoko Inomata, Mami Miyakawa, Michiko Aihara
BACKGROUND: Poly(γ-glutamic acid) (PGA) is an allergen in natto, fermented soybeans, which causes late-onset anaphylaxis. We hypothesized that jellyfish stings sensitize adults to PGA because a surfer had allergies to both natto and jellyfish, whose sting contains PGA. The aim of the study was to identify behavioral factors, such as marine sports, associated with PGA sensitization. METHODS: Outpatients diagnosed with food allergies based on relevant clinical history, positive skin test and/or food challenge test answered a questionnaire during a regular visit in 2016...
November 24, 2017: Allergology International: Official Journal of the Japanese Society of Allergology
https://www.readbyqxmd.com/read/29170700/the-effect-of-a-single-bout-of-surfing-on-exercise-induced-affect
#10
Ryan Pittsinger, Jeff Kress, Jill Crussemeyer
Exercise-induced affect (EIA) has been well documented and is often composed of positive affect, negative affect, tranquility, and fatigue. Research on EIA has focused on mainstream sports such as running, walking, or cycling; however, no research has evaluated the influence of action sports participation in activities such surfing on EIA. The current study examined the effect of a single 30-min surfing bout on EIA in 107 adult volunteers. An additional purpose was if change in affect was similar based on surfing history, surfing frequency, and surfing skill level...
2017: International Journal of Exercise Science
https://www.readbyqxmd.com/read/29153445/prevalence-and-correlates-of-youth-homelessness-in-the-united-states
#11
Matthew H Morton, Amy Dworsky, Jennifer L Matjasko, Susanna R Curry, David Schlueter, Raúl Chávez, Anne F Farrell
PURPOSE: Unaccompanied youth homelessness is a serious concern. Response, however, has been constrained by the absence of credible data on the size and characteristics of the population and reliable means to track youth homelessness over time. We sought to address these gaps. METHODS: Using a nationally representative phone-based survey (N = 26,161), we solicited household and individual reports on different types of youth homelessness. We collected household reports on adolescents aged 13-17 and young adults aged 18-25, as well as self-reports from young adults aged 18-25...
November 9, 2017: Journal of Adolescent Health: Official Publication of the Society for Adolescent Medicine
https://www.readbyqxmd.com/read/29149353/-surf-the-allergy-tsunami-future-chances-for-ent
#12
EDITORIAL
L Klimek
No abstract text is available yet for this article.
October 2017: HNO
https://www.readbyqxmd.com/read/29145916/monorchis-lewisi-n-sp-trematoda-monorchiidae-from-the-surf-bream-acanthopagrus-australis-sparidae-in-moreton-bay-australia
#13
T H Cribb, N Q-X Wee, R A Bray, S C Cutmore
We describe Monorchis lewisi n. sp. (Monorchiidae) from the surf bream, Acanthopagrus australis (Günther, 1859) (Sparidae), in Moreton Bay, eastern Australia. The new species differs from most existing species of Monorchis Monticelli, 1893 in its possession of an elongate I-shaped excretory vesicle, and from other congeners in the relative configuration of the gut and suckers. Ovipusillus mayu Dove & Cribb, 1998 is re-reported from Gnathanodon speciosus (Forsskål, 1775) (Carangidae) from Moreton Bay. We report new second internal transcribed spacer (ITS2) and 28S rDNA sequence data for both species...
November 17, 2017: Journal of Helminthology
https://www.readbyqxmd.com/read/29111631/physical-performance-characteristics-between-male-and-female-youth-surfing-athletes
#14
Bruno A Ferreira da Silva, Filipe M Clemente
BACKGRAUND: Despite some knowledge about the fitness levels of elite surfers, there is limited published research examining gender differences, particularly in young athletes. The purpose of this study was to describe and compare the sex differences in physical performance characteristics of elite youth surfers. It was also aimed to study the association between physical performance variables. METHODS: This longitudinal prospective study was based on a total of twenty male and female youth surfers performed a battery of physical performance tests: anthropometrics, weight-bearing dorsiflexion test, Functional Movement Screen, lower extremity dynamic stability, lower limb dynamic strength, paddling and apnea test...
November 7, 2017: Journal of Sports Medicine and Physical Fitness
https://www.readbyqxmd.com/read/29105531/the-relationship-between-children-s-media-habits-and-their-anxiety-and-behaviour-during-dental-treatment
#15
Zahra Jamali, Masoumeh Vatandoost, Leila Erfanparast, Naser Asl Aminabadi, Sajjad Shirazi
OBJECTIVE: The existing evidence suggests that media habits may have moderating role on children's psychological adjustment in the dental setting. The aim of this study was to investigate the relationship between children's media habits and their anxiety and behaviour management problems (BMP) during dental treatment. MATERIALS AND METHODS: A total of 289 children aged 3-6 years old were included. Dental anxiety (DA) and BMP were assessed using Clinical Anxiety Rating Scale and Frankl's Rating Scale during the dental treatment...
November 5, 2017: Acta Odontologica Scandinavica
https://www.readbyqxmd.com/read/29102345/a-case-report-paediatric-surfer-s-myelopathy
#16
Rebecca Scatchard, Joao Alves Rosa, Philippa Bowen, Alex Mortimer, Peta M Sharples, Andrew L Lux
Surfer's myelopathy was first described by Thompson et al., in 2004.1 It is a rare cause of sudden spinal cord injury that occurs in the absence of direct trauma to the spinal area in novice healthy surfers. We present the case of the youngest patient we are aware of to be diagnosed with surfer's myelopathy following actual surfing. A clear aetiology for surfer's myelopathy has not previous been described. However, the hypothesis that there is ischaemia to the lower spinal cord is supported by our case, where we present the first clear angiographic evidence of the occlusion of the great anterior radicular artery of Adamkiewicz in a patient diagnosed with surfer's myelopathy...
October 7, 2017: European Journal of Paediatric Neurology: EJPN
https://www.readbyqxmd.com/read/29099337/technology-embedded-health-education-on-nutrition-for-middle-aged-and-older-adults-living-in-the-community
#17
Ching-Ju Chiu, Su-E Kuo, Dai-Chan Lin
Mobile technology provides young adults important support for self-directed learning, but whether there is related support for older adults is not clear. This study aims to determine whether 1) nutrition education combined with mobile technology-supported teaching improves knowledge of and self-efficacy for a healthy diet; 2) if adults who reported reviewing the electronic course material or searching health information online, showed significantly greater progress in knowledge of and self-efficacy for a healthy diet than did those who did not adopt the electronic support...
November 1, 2017: Global Health Promotion
https://www.readbyqxmd.com/read/29092219/direct-experimental-measurement-of-single-mode-and-mode-hopping-dynamics-in-frequency-swept-lasers
#18
T P Butler, D Goulding, B Kelleher, B O'Shaughnessy, S Slepneva, S P Hegarty, G Huyet
A time-resolved study is presented of the single-mode and mode-switching dynamics observed in swept source vertical cavity surfing emitting lasers and swept wavelength short external cavity lasers. A self-delayed interferometric technique is used to experimentally measure the phase and intensity of these frequency swept lasers, allowing direct examination of the modal dynamics. Visualisation of the instantaneous optical spectrum reveals mode-hop free single mode lasing in the case of the vertical cavity laser, with a tuning rate of 6...
October 30, 2017: Optics Express
https://www.readbyqxmd.com/read/29084262/press-touch-code-a-finger-press-based-screen-size-independent-authentication-scheme-for-smart-devices
#19
M S A Noman Ranak, Saiful Azad, Nur Nadiah Hanim Binti Mohd Nor, Kamal Z Zamli
Due to recent advancements and appealing applications, the purchase rate of smart devices is increasing at a higher rate. Parallely, the security related threats and attacks are also increasing at a greater ratio on these devices. As a result, a considerable number of attacks have been noted in the recent past. To resist these attacks, many password-based authentication schemes are proposed. However, most of these schemes are not screen size independent; whereas, smart devices come in different sizes. Specifically, they are not suitable for miniature smart devices due to the small screen size and/or lack of full sized keyboards...
2017: PloS One
https://www.readbyqxmd.com/read/29073023/reply-to-kov%C3%A3-cs-et-al-surfing-or-sliding-the-act-of-naming-and-its-implications
#20
Marc Hennes, Julien Tailleur, Gaëlle Charron, Adrian Daerr
No abstract text is available yet for this article.
October 17, 2017: Proceedings of the National Academy of Sciences of the United States of America
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