Results 31 to 40 of about 571,031 (268)

Fiber Microsphere Coupled in a Taper for a Large Curvature Range

open access: yesFibers, 2019
This work consists of using an optical fiber microsphere as a sensor for a wide range of curvature radii. The microsphere was manufactured in a standard fiber with an electric arc.
Paulo Robalinho, Orlando Frazão
doaj   +1 more source

Contact Angle Effects on Pore and Corner Arc Menisci in Polygonal Capillary Tubes Studied with the Pseudopotential Multiphase Lattice Boltzmann Model

open access: yesComputation, 2016
In porous media, pore geometry and wettability are determinant factors for capillary flow in drainage or imbibition. Pores are often considered as cylindrical tubes in analytical or computational studies.
Soyoun Son   +4 more
doaj   +1 more source

Two-Step Method for Assessing Similarity of Random Sets

open access: yesImage Analysis and Stereology, 2021
The paper concerns a new statistical method for assessing dissimilarity of two random sets based on one realisation of each of them. The method focuses on shapes of the components of the random sets, namely on the curvature of their boundaries together ...
Vesna Gotovac Đogaš   +5 more
doaj   +1 more source

Abel–Jacobi map and curvature of the pulled back metric

open access: yesBulletin of Mathematical Sciences, 2021
Let X be a compact connected Riemann surface of genus at least two. The Abel–Jacobi map φ:Symd(X)→Picd(X) is an embedding if d is less than the gonality of X. We investigate the curvature of the pull-back, by φ, of the flat metric on Picd(X).
Indranil Biswas
doaj   +1 more source

Load Distribution in the Lumbar Spine During Modeled Compression Depends on Lordosis

open access: yesFrontiers in Bioengineering and Biotechnology, 2021
Excessive or incorrect loading of lumbar spinal structures is commonly assumed as one of the factors to accelerate degenerative processes, which may lead to lower back pain.
Andreas Müller   +10 more
doaj   +1 more source

Spinal shape analysis in 1,020 healthy young adults aged from 19 to 30 years

open access: yesActa Gymnica, 2016
Background: A number of studies on diseased spine have been published; however, there is a relative paucity of studies investigating spine shape characteristics in healthy populations.
Jakub Krejčí, Jiří Gallo
doaj   +1 more source

Estimating the Rut Depth by UAV Photogrammetry

open access: yesRemote Sensing, 2017
The rut formation during forest operations is an undesirable phenomenon. A methodology is being proposed to measure the rut depth distribution of a logging site by photogrammetric point clouds produced by unmanned aerial vehicles (UAV).
Paavo Nevalainen   +7 more
doaj   +1 more source

Study of Morphometry of Carotid Canal in Skulls of South Indian origin [PDF]

open access: yesJournal of Clinical and Diagnostic Research, 2015
Background: The internal carotid artery supplies the anterior part of the brain, the eye and its appendages and sends branches to the forehead and nose.Carotid canal is a curved channel in the petrous temporal bone through which internal carotid ...
Vidya C S, Shamasundar N M
doaj   +1 more source

Novel Topological Phase with a Zero Berry Curvature. [PDF]

open access: yesPhysical Review Letters, 2017
We present a two-dimensional (2D) lattice model that exhibits a nontrivial topological phase in the absence of the Berry curvature. Instead, the Berry connection provides the topological nontrivial phase in the model, whose integration over the momentum ...
Feng Liu, K. Wakabayashi
semanticscholar   +1 more source

The Lemon Illusion: Seeing curvature where there is none

open access: yesFrontiers in Human Neuroscience, 2015
Curvature is a highly informative visual cue for shape perception and object recognition. We introduce a novel illusion—the Lemon Illusion—in which subtle illusory curvature is perceived along contour regions that are devoid of physical curvature.
Lars eStrother   +2 more
doaj   +1 more source

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