Results 11 to 20 of about 8,429,353 (295)

VHF coherent radar signals from the E region ionosphere and the relationship to electron drift velocity and ion acoustic velocity [PDF]

open access: yes, 2002
The Scandinavian Twin Auroral Radar Experiment (STARE) coherent radar system measures the Doppler shifts caused by ∼1 m plasma waves in the high-latitude E region ionosphere.
Nielsen, E.   +2 more
core   +5 more sources

High-resolution microscale velocity field measurement using light field particle image-tracking velocimetry [PDF]

open access: yes, 2023
Light field microparticle image velocimetry (LF-μPIV) can realize the three-dimensional (3D) microscale velocity field measurement, but the spatial resolution of the velocity field is low.
Gu, Mengtao   +3 more
core   +1 more source

A New Method of Measuring Velocity Profiles using a MultiElectrode Electromagnetic Flow Meter [PDF]

open access: yes, 2010
This paper describes a model of a novel design of electromagnetic flow meter for velocity profile measurement in single phase and multiphase flows with nonuniform axial velocity profiles.
Lucas, Gary, Leeungculsatien, Teerachai
core   +4 more sources

The properties of cosmic velocity fields [PDF]

open access: yesMonthly Notices of the Royal Astronomical Society, 2015
Understanding the velocity field is very important for modern cosmology: it gives insights to structure formation in general, and also its properties are crucial ingredients in modelling redshift-space distortions and in interpreting measurements of the kinetic Sunyaev-Zeldovich effect. Unfortunately, characterising the velocity field in cosmological N-
Hahn Oliver, Angulo Raul E., Abel Tom
openaire   +2 more sources

Galactic rotation and velocity fields [PDF]

open access: yesSymposium - International Astronomical Union, 1985
Using unpublished 21-cm data from Jackson and Kerr of the entire Galaxy at b = 0°, we have determined the terminal velocities, vm, to be (Gill & Shuter, 1983)
W. L. H. Shuter, A. Gill
openaire   +1 more source

On the Quantification of Cellular Velocity Fields [PDF]

open access: yesBiophysical Journal, 2016
The application of flow visualization in biological systems is becoming increasingly common in studies ranging from intracellular transport to the movements of whole organisms. In cell biology, the standard method for measuring cell-scale flows and/or displacements has been particle image velocimetry (PIV); however, alternative methods exist, such as ...
Vig, Dhruv K.   +2 more
openaire   +2 more sources

The computation of the velocity field [PDF]

open access: yesProceedings of the Royal Society of London. Series B. Biological Sciences, 1984
Abstract The organization of movement in the changing retinal image provides a valuable source of information for analysing the environment in terms of objects, their motion in space, and their three-dimensional structure. A description of this movement is not provided to our visual system directly, however; it must be inferred from ...
openaire   +2 more sources

VELOCITY FIELD IN A STEADY BREAKER

open access: yesCoastal Engineering Proceedings, 1980
An experimental investigation is described of the velocity field in a steady, spilling-type breaker, generated on a steady current by a submerged hydrofoil. Velocities have been measured with a laser-doppler system, and analysed with respect to mean and rms-values as well as Reynolds stresses.
J. A. Battjes, T. Sakai
openaire   +2 more sources

Determination of a steady velocity field in a rotating frame of reference at the surface of the Earth's core [PDF]

open access: yes, 1996
We relax the steady-motions theorem by solving for a steady velocity field at the surface of the core in a frame of reference drifting at a linear rate with respect to an observer fixed in the mantle frame of reference.
Whaler, Kathy; id_orcid, Davis, R. G.
core   +1 more source

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