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https://www.readbyqxmd.com/read/28636489/evaluation-of-countermeasures-for-red-light-running-by-traffic-simulator-based-surrogate-safety-measures
#1
Changju Lee, Jaehyun Jason So, Jiaqi Ma
OBJECTIVE: The conflicts among motorists entering a signalized intersection with the red light indication have become a national safety issue. Because of its sensitivity, efforts have been made to investigate the possible causes and effectiveness of countermeasures by the comparison sites and/or before-and-after studies. Nevertheless, these approaches are ineffective when comparison sites cannot be found, or crash data sets are not readily available or not reliable for statistical analysis...
June 21, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28635471/off-camera
#2
Ed Freshwater
Wearing body cameras at work is a terrible idea, especially in settings where establishing a trusting therapeutic relationship is vital (readers' panel, 14 June).
June 21, 2017: Nursing Standard
https://www.readbyqxmd.com/read/28635138/snake-spectacle-vessel-permeability-to-sodium-fluorescein
#3
Roy W Bellhorn, Ann R Strom, Monica J Motta, John Doval, Michelle G Hawkins, Joanne Paul-Murphy
OBJECTIVE: Assess vascular permeability of the snake spectacle to sodium fluorescein during resting and shedding phases of the ecdysis cycle. ANIMAL STUDIED: Ball python (Python regius). PROCEDURES: The snake was anesthetized, and spectral domain optic coherence tomography was performed prior to angiographic procedures. An electronically controlled digital single-lens reflex camera with a dual-head flash equipped with filters suitable for fluorescein angiography was used to make images...
June 20, 2017: Veterinary Ophthalmology
https://www.readbyqxmd.com/read/28634409/characterization-of-the-3d-structure-of-a-cultivated-land-surface-and-its-influence-on-wheat-seedlings-growth-using-kinect
#4
Tao Liu, Wen Chen, Fujian Li, Wei Wu, Chengming Sun, Jinfeng Ding, Xinkai Zhu, Wenshan Guo
The quality of wheat emergence has a significant impact on the subsequent growth and development of seedlings. The structure of cultivated land surfaces is an important factor influencing wheat seedlings growth. However, few studies have investigated this. In this study, three-dimensional structural parameters of cultivated land surfaces were collected using 3D imaging equipment, and the effects of different grades of lands on the emergence and growth of wheat were evaluated. The evaluation criteria for the soil blocks was designed according to the ISO-25178-2 standard, and the wheat emergence rate, speed, tillering capacity per plant, dry weight per plant, and final yields of different grades of cultivated land were investigated...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28634342/natural-canopy-bridges-effectively-mitigate-tropical-forest-fragmentation-for-arboreal-mammals
#5
Tremaine Gregory, Farah Carrasco-Rueda, Alfonso Alonso, Joseph Kolowski, Jessica L Deichmann
Linear infrastructure development and resulting habitat fragmentation are expanding in Neotropical forests, and arboreal mammals may be disproportionately impacted by these linear habitat clearings. Maintaining canopy connectivity through preservation of connecting branches (i.e. natural canopy bridges) may help mitigate that impact. Using camera traps, we evaluated crossing rates of a pipeline right-of-way in a control area with no bridges and in a test area where 13 bridges were left by the pipeline construction company...
June 20, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28634257/two-fossil-species-of-metrosideros-myrtaceae-from-the-oligo-miocene-golden-fleece-locality-in-tasmania-australia
#6
Myall Tarran, Peter G Wilson, Michael K Macphail, Greg J Jordan, Robert S Hill
PREMISE OF THE STUDY: The capsular-fruited genus Metrosideros (Myrtaceae) is one of the most widely distributed flowering plant genera in the Pacific but is extinct in Australia today. The center of geographic origin for the genus and the reason for and timing of its extinction in Australia remain uncertain. We identify fossil Metrosideros fruits from the newly discovered Golden Fleece fossil flora in the Oligo-Miocene of Tasmania, Australia, shedding further light on these problems. METHODS: Standard paleopalynological techniques were used to date the fossil-bearing sediments...
June 20, 2017: American Journal of Botany
https://www.readbyqxmd.com/read/28633682/effect-of-space-allowance-and-floor-type-on-performance-welfare-and-physiological-measurements-of-finishing-beef-heifers
#7
M P Keane, M McGee, E G O'Riordan, A K Kelly, B Earley
Accommodating cattle indoors during the winter is widely practiced throughout Europe. There is currently no legislation surrounding the space allowance and floor type that should be provided to cattle during this time, however, concerns have been raised regarding the type of housing systems currently in use. The objective of the study was to investigate the effect of space allowance and floor type on performance and welfare of finishing beef heifers. Continental crossbred heifers (n=240: mean initial live; weight, 504 (SD 35...
June 21, 2017: Animal: An International Journal of Animal Bioscience
https://www.readbyqxmd.com/read/28632879/reliability-and-agreement-between-metrics-of-cone-spacing-in-adaptive-optics-images-of-the-human-retinal-photoreceptor-mosaic
#8
Daniela Giannini, Giuseppe Lombardo, Letizia Mariotti, Nicholas Devaney, Sebastiano Serrao, Marco Lombardo
Purpose: To assess reliability and agreement among three metrics used to evaluate the distribution of cell distances in adaptive optics (AO) images of the cone mosaic. Methods: Using an AO flood illumination retinal camera, we acquired images of the cone mosaic in 20 healthy subjects and 12 patients with retinal diseases. The three spacing metrics studied were the center-to-center spacing (Scc), the local cone spacing (LCS), and the density recovery profile distance (DRPD)...
June 1, 2017: Investigative Ophthalmology & Visual Science
https://www.readbyqxmd.com/read/28632764/accuracy-and-reliability-of-retinal-photo-grading-for-diabetic-retinopathy-remote-graders-from-a-developing-country-and-standard-retinal-photo-grader-in-australia
#9
Fakir M Amirul Islam
BACKGROUND: To evaluate the accuracy and reliability of fundus retinal photos graded by local graders in Bangladesh with those graded by an expert at the Centre for Eye Research Australia (CERA) in the context of mass scale diabetic retinopathy (DR) screening in Bangladesh. METHODS: A population-based cross-sectional study of 3,104 adults identified 213 (7.2%) eligible patients with diabetes of age ≥ 40 years in 2012-2013. Retinal photographs were collected using a non-mydriatic digital fundus retinal camera and a two-field imaging protocol...
2017: PloS One
https://www.readbyqxmd.com/read/28632156/image-mosaicking-approach-for-a-double-camera-system-in-the-gaofen2-optical-remote-sensing-satellite-based-on-the-big-virtual-camera
#10
Yufeng Cheng, Shuying Jin, Mi Wang, Ying Zhu, Zhipeng Dong
The linear array push broom imaging mode is widely used for high resolution optical satellites (HROS). Using double-cameras attached by a high-rigidity support along with push broom imaging is one method to enlarge the field of view while ensuring high resolution. High accuracy image mosaicking is the key factor of the geometrical quality of complete stitched satellite imagery. This paper proposes a high accuracy image mosaicking approach based on the big virtual camera (BVC) in the double-camera system on the GaoFen2 optical remote sensing satellite (GF2)...
June 20, 2017: Sensors
https://www.readbyqxmd.com/read/28632060/the-collision-forces-and-lower-extremity-inter-joint-coordination-during-running
#11
Li-I Wang, Chin-Yi Gu, I-Lin Wang, Sheng-Wun Siao, Szu-Ting Chen
The purpose of this study was to compare the lower extremity inter-joint coordination of different collision forces runners during running braking phase. A dynamical system approach was used to analyse the inter-joint coordination parameters. Data were collected with six infra-red cameras and two force plates. According to the impact peak of the vertical ground reaction force, twenty habitually rearfoot-strike runners were categorised into three groups: high collision forces runners (HF group, n = 8), medium collision forces runners (MF group, n = 5), and low collision forces runners (LF group, n = 7)...
February 28, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28632058/assessment-of-model-based-image-matching-for-future-reconstruction-of-unhelmeted-sport-head-impact-kinematics
#12
Gregory J Tierney, Hamed Joodaki, Tron Krosshaug, Jason L Forman, Jeff R Crandall, Ciaran K Simms
Player-to-player contact inherent in many unhelmeted sports means that head impacts are a frequent occurrence. Model-Based Image-Matching (MBIM) provides a technique for the assessment of three-dimensional linear and rotational motion patterns from multiple camera views of a head impact event, but the accuracy is unknown for this application. The goal of this study is to assess the accuracy of the MBIM method relative to reflective marker-based motion analysis data for estimating six degree of freedom head displacements and velocities in a staged pedestrian impact scenario at 40 km/h...
February 28, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28632054/middle-finger-and-ball-movements-around-ball-release-during-baseball-fastball-pitching
#13
Tomoyuki Matsuo, Tsutomu Jinji, Daisaku Hirayama, Daiki Nasu, Hiroki Ozaki, Daisuke Kumagawa
The objectives of this study were to investigate middle finger movements and dynamics of ball movements around the instant of ball release during baseball pitching. Baseball pitching from an indoor mound among 14 semi-professional pitchers was captured using a motion capture system with 16 high-speed cameras (1,000 Hz). Kinematics of middle finger joints, ball rotation, and force applied to the ball were calculated. The proximal and distal interphalangeal joints continued to extend until the instant of ball release, then abruptly flexed...
February 28, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28632049/kinematic-comparison-of-the-seoi-nage-judo-technique-between-elite-and-college-athletes
#14
Takanori Ishii, Michiyoshi Ae, Yuta Suzuki, Yasuto Kobayashi
This study sought to identify biomechanical factors that determine fast and skilful execution of the seoi-nage (shoulder throw) technique by comparing kinematics between elite and college judo athletes. Three-dimensional motion data were captured using a VICON-MX system with 18 cameras operating at 250 Hz as three male elite and seven male college judo athletes performed seoi-nage. No significant difference was found in motion phase time of the turning phase between the two groups, indicating that motion phase time is not necessarily a factor contributing quickness in seoi-nage...
February 24, 2017: Sports Biomechanics
https://www.readbyqxmd.com/read/28630937/high-precision-neural-decoding-of-complex-movement-trajectories-using-recursive-bayesian-estimation-with-dynamic-movement-primitives
#15
Guy Hotson, Ryan J Smith, Adam G Rouse, Marc H Schieber, Nitish V Thakor, Brock A Wester
Brain-machine interfaces (BMIs) are a rapidly progressing technology with the potential to restore function to victims of severe paralysis via neural control of robotic systems. Great strides have been made in directly mapping a user's cortical activity to control of the individual degrees of freedom of robotic end-effectors. While BMIs have yet to achieve the level of reliability desired for widespread clinical use, environmental sensors (e.g. RGB-D cameras for object detection) and prior knowledge of common movement trajectories hold great potential for improving system performance...
July 2016: IEEE Robotics and Automation Letters
https://www.readbyqxmd.com/read/28630786/ophthoselfie-detailed-self-imaging-of-cornea-and-anterior-segment-by-smartphone
#16
Abdullah Kaya
OBJECTIVES: To describe the ophthoselfie, a method by which everyone can take detailed self-images of the cornea and anterior segment with a smartphone. MATERIALS AND METHODS: A 90-diopter non-contact double aspheric lens was attached to posterior camera of the smartphone by clear tape. Images of one eye on the screen of the smartphone could be seen with the other eye in the mirror and images were taken. RESULTS: Accurate and detailed images of the cornea and anterior segment of the eye could be taken...
June 2017: Turkish Journal of Ophthalmology
https://www.readbyqxmd.com/read/28630681/imaging-optical-scattering-of-butterfly-wing-scales-with-a-microscope
#17
Jinxin Fu, Beom-Jin Yoon, Jung Ok Park, Mohan Srinivasarao
A new optical method is proposed to investigate the reflectance of structurally coloured objects, such as Morpho butterfly wing scales and cholesteric liquid crystals. Using a reflected-light microscope and a digital single-lens reflex (DSLR) camera, we have successfully measured the two-dimensional reflection pattern of individual wing scales of Morpho butterflies. We demonstrate that this method enables us to measure the bidirectional reflectance distribution function (BRDF). The scattering image observed in the back focal plane of the objective is projected onto the camera sensor by inserting a Bertrand lens in the optical path of the microscope...
August 6, 2017: Interface Focus
https://www.readbyqxmd.com/read/28630442/ir-sensitivity-enhancement-of-cmos-image-sensor-with-diffractive-light-trapping-pixels
#18
Sozo Yokogawa, Itaru Oshiyama, Harumi Ikeda, Yoshiki Ebiko, Tomoyuki Hirano, Suguru Saito, Takashi Oinoue, Yoshiya Hagimoto, Hayato Iwamoto
We report on the IR sensitivity enhancement of back-illuminated CMOS Image Sensor (BI-CIS) with 2-dimensional diffractive inverted pyramid array structure (IPA) on crystalline silicon (c-Si) and deep trench isolation (DTI). FDTD simulations of semi-infinite thick c-Si having 2D IPAs on its surface whose pitches over 400 nm shows more than 30% improvement of light absorption at λ = 850 nm and the maximum enhancement of 43% with the 540 nm pitch at the wavelength is confirmed. A prototype BI-CIS sample with pixel size of 1...
June 19, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28629615/a-simple-method-to-compare-firing-pin-marks-using-stereomicroscope-and-microsoft-office-windows-8-tools
#19
R Suresh
Pertinent marks of fired cartridge cases such as firing pin, breech face, extractor, ejector, etc. are used for firearm identification. A non-standard semiautomatic pistol and four .22rim fire cartridges (head stamp KF) is used for known source comparison study. Two test fired cartridge cases are examined under stereomicroscope. The characteristic marks are captured by digital camera and comparative analysis of striation marks is done by using different tools available in the Microsoft word (Windows 8) of a computer system...
June 7, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28629139/novel-descattering-approach-for-stereo-vision-in-dense-suspended-scatterer-environments
#20
Chanh D Tr Nguyen, Jihyuk Park, Kyeong-Yong Cho, Kyung-Soo Kim, Soohyun Kim
In this paper, we propose a model-based scattering removal method for stereo vision for robot manipulation in indoor scattering media where the commonly used ranging sensors are unable to work. Stereo vision is an inherently ill-posed and challenging problem. It is even more difficult in the case of images of dense fog or dense steam scenes illuminated by active light sources. Images taken in such environments suffer attenuation of object radiance and scattering of the active light sources. To solve this problem, we first derive the imaging model for images taken in a dense scattering medium with a single active illumination close to the cameras...
June 17, 2017: Sensors
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