Results 71 to 80 of about 26,934 (278)

Left Ventricular Outflow Tract Geometry as a Predictor of Permanent Pacemaker Implantation After Transcatheter Aortic Valve Implantation Using the Evolut Series

Catheterization and Cardiovascular Interventions, EarlyView.
ABSTRACT Background Predicting the need for permanent pacemaker implantation (PPM) after transcatheter aortic valve implantation (TAVI) is crucial for procedural planning and patient counseling. Aims To evaluate whether left ventricular outflow tract (LVOT) morphology, specifically a tapered configuration, predicts conduction disturbances requiring PPM
Mahmoud Abdelshafy, Angela McInerney, Ahmed Elmeanawy, Paolo Alberto Del Sole, Max Wagener, Hatem Helal, Mahmoud Abozaid, Ashraf Alamir, Tamer Fouad, Alsayed Almarghany, Briain MacNeill, Osama Soliman, Darren Mylotte, Mohammad Abdelghani   +13 more
wiley   +1 more source

Flying fruit flies correct for visual sideslip depending on relative speed of forward optic flow.

Frontiers in Behavioral Neuroscience, 2013
As a fly flies through its environment, static objects produce moving images on its retina, and this optic flow is essential for steering and course corrections. Different types of rotation and translation produce unique flow fields, which fly brains are
Stephanie eCabrera, Jamie C Theobald
doaj   +1 more source

The Importance of Patient Positioning in Radiography When Utilising Automatic Exposure Control

Journal of Medical Radiation Sciences, EarlyView.
This study highlights the impact of inaccurate patient positioning on dose and image quality when utilising the automatic exposure control (AEC) for radiographic examinations. While the AEC serves to optimise radiation dose to patients, the results here demonstrate that poor positioning can lead to significant dose implications for patients.
Adam Steward, Cindy Do, Tate Brazil, Mikaela Barresi   +3 more
wiley   +1 more source

Parallax

, 2013
For the uninitiated, parallax is a fancy term for triangulation, which we humans naturally do in the form of depth perception – your eyes are separated by a small distance from each other so they see slightly different views of the world. You can try it now by closing one eye, holding out your thumb, and lining it up with a mark on a far wall, then ...
openaire   +3 more sources

Eye movement parameters for performance evaluation in projection-based stereoscopic display

Journal of Eye Movement Research, 2018
The current study applied Structural Equation Modeling (SEM) to analyze the relationship among index of difficulty (ID) and parallax on eye movement time (EMT), fixation duration (FD), time to first fixation (TFF), number of fixation (NF), and eye gaze ...
Chiuhsiang Joe Lin, Yogi Tri Prasetyo, Retno Widyaningrum   +2 more
doaj   +1 more source

Improving forest age estimation to understand subtropical forest regrowth dynamics using deep learning image segmentation of time‐series historical aerial photographs

Remote Sensing in Ecology and Conservation, EarlyView.
Accurately estimating forest age is key to understanding how forests recover and evaluating restoration success. We developed a two‐step deep learning approach using historical greyscale aerial photographs to map forest age at fine spatial scales. By combining a pre‐trained model with localized fine‐tuning, our U‐Net + ResNet50 architecture achieved ...
Ying Ki Law, Yi‐Fei Gu, Shuwen Liu, Guangqin Song, Aland H. Y. Chan, Cham Man Tse, Zhonghua Liu, Martha J. Ledger, Billy C. H. Hau, Sawaid Abbas, Jin Wu   +10 more
wiley   +1 more source

Volumetric Single‐Molecule Tracking Inside Subcellular Structures

Small, EarlyView.
This correlative microscopy approach integrates single‐molecule light‐field microscopy (SMLFM) with widefield Fourier light‐field microscopy (FLFM) to enable 3D single‐molecule tracking within the organelles of living mammalian cells. Instantaneous volumetric segmentation enhances the sensitivity of molecular organization and diffusion measurements ...
Sam Daly, Joseph E. Chambers, Caroline Jones, Bin Fu, James D. Manton, Joseph S. Beckwith, Stefan J. Marciniak, David C. Gershlick, Steven F. Lee   +8 more
wiley   +1 more source

Converting Binary Floating‐Point Numbers to Shortest Decimal Strings: An Experimental Review

Software: Practice and Experience, EarlyView.
ABSTRACT Background When sharing or logging numerical data, we must convert binary floating‐point numbers into their decimal string representations. For example, the number π might become 3.1415927. Engineers have perfected many algorithms for producing such accurate, short strings.
Jaël Champagne Gareau, Daniel Lemire
wiley   +1 more source

Stereoscopic Estimation of Volcanic Ash Cloud-Top Height from Two Geostationary Satellites

Remote Sensing, 2016
The characterization of volcanic ash clouds released into the atmosphere during explosive eruptions includes cloud height as a fundamental physical parameter.
Luca Merucci, Klemen Zakšek, Elisa Carboni, Stefano Corradini   +3 more
doaj   +1 more source

Motion parallax for 360° RGBD video

IEEE Transactions on Visualization and Computer Graphics, 2019
We present a method for adding parallax and real-time playback of 360° videos in Virtual Reality headsets. In current video players, the playback does not respond to translational head movement, which reduces the feeling of immersion, and causes motion ...
A. Serrano, Incheol Kim, Zhili Chen, S. DiVerdi, D. Gutierrez, Aaron Hertzmann, B. Masiá   +6 more
semanticscholar   +1 more source