Results 11 to 20 of about 289,177 (314)
Velocity bias in intrusive gas-liquid flow measurements
Nature Communications, 2021 Estimating velocities in gas liquid flows is of importance in many engineering applications. Hohermuth et al. show that previous bubble velocities obtained from intrusive probes have been underestimated and provide a correction scheme for more accurate ...
B. Hohermuth +3 more
doaj +1 more source
Entropy, 2014 Flow velocity measurements using point-velocity meters are normally obtained by sampling one, two or three velocity points per vertical profile. During high floods their use is inhibited due to the difficulty of sampling in lower portions of the flow ...
Giovanni Corato +2 more
doaj +1 more source
New 3D velocity model of Estonia from GNSS measurements [PDF]
Estonian Journal of Earth Sciences, 2021 The aim of this study was to create a 3D crustal deformation model for Estonia, based on dense Global Navigation Satellite System (GNSS) data (geodetic points with velocities) and validate the existing models of horizontal and vertical crustal ...
Tarmo Kall +3 more
doaj +1 more source
A Speed Regression Using Acceleration Data in a Deep Convolutional Neural Network
IEEE Access, 2019 A speed estimation method using the acceleration data measured by a wearable device during exercising on a treadmill is described in this paper. The moving speed is estimated by a regression algorithm that implements a deep convolutional neural network ...
Karl L. Wang, Jingya Xu
doaj +1 more source
The Impact of Parametric Uncertainties on Mobile Robots Velocities and Pose Estimation
IEEE Access, 2019 This paper analyses the impact of parametric uncertainties of a mobile robot kinematic model on velocity and pose estimation, providing models and quantifiable knowledge about them.
Jose Gilmar Nunes De Carvalho Filho +3 more
doaj +1 more source
SURFACE FLOW VELOCITY MEASUREMENTS FROM UAV-BASED VIDEOS [PDF]
The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, 2019 Most measuring methods for determining the volumetric flow rate or surface flow velocity have in common that they cannot be safely used under extreme outflow conditions. Especially in catastrophic situations, it is of particular interest to determine the
J. Brauneck, T. Gattung, R. Jüpner
doaj +1 more source
Applied Sciences, 2017 We present a strategy for designing an α - β - η - θ filter, a fixed-gain moving-object tracking filter using position and velocity measurements.
Kenshi Saho, Masao Masugi
doaj +1 more source
Quantitative measurement of hopper flow using MRI [PDF]
EPJ Web of Conferences, 2021 To gain fundamental insight into granular flow behaviour, quantitative measurements of velocity and solid fraction are required. The aim of this study is to measure the solid fraction and velocity of 3D granular flows quantitively using a recently ...
Mehdizad Maral +3 more
doaj +1 more source
Aerospace, 2019 The current work experimentally investigates the flowfield characteristics of anunder-expanded turbulent jet impinging on a solid surface for various nozzle-to-plate distances2.46Dj, 1.64Dj, and 0.82Dj (Dj is the jet hydraulic diameter), and nozzle ...
Duy Thien Nguyen +2 more
doaj +1 more source
Axonal Conduction Velocity Measurement
BIO-PROTOCOL, 2017 Action potential conduction velocity is the speed at which an action potential (AP) propagates along an axon. Measuring AP conduction velocity is instrumental in determining neuron health, function, and computational capability, as well as in determining short-term dynamics of neuronal communication and AP initiation (Ballo and Bucher, 2009; Bullock ...
Margaret DeMaegd +2 more
openaire +4 more sources