Results 31 to 40 of about 255,371 (329)

Evaluating bone quality and asymmetrical aplasia of the thoracic vertebral body in Lenke 1A adolescent idiopathic scoliosis using hounsfield units

open access: yesFrontiers in Surgery, 2022
Study DesignRetrospective analysis.ObjectiveTo evaluate bone quality and investigate asymmetrical development of the thoracic vertebral body in adolescent idiopathic scoliosis (AIS) based on Hounsfield unit (HU) measurements obtained from computed ...
Taiqiu Chen   +11 more
doaj   +1 more source

Banach–Mazur Distance Between Convex Quadrangles

open access: yesDemonstratio Mathematica, 2014
It is proved that the Banach-Mazur distance between arbitrary two convex quadrangles is at most 2. The distance equals 2 if and only if the pair of these quadrangles is a parallelogram and a triangle.
Lassak Marek
doaj   +1 more source

Phase retrieval for characteristic functions of convex bodies and reconstruction from covariograms [PDF]

open access: yes, 2010
We propose strongly consistent algorithms for reconstructing the characteristic function 1_K of an unknown convex body K in R^n from possibly noisy measurements of the modulus of its Fourier transform \hat{1_K}.
Bianchi, Gabriele   +2 more
core   +3 more sources

A parallel ADMM-based convex clustering method

open access: yesEURASIP Journal on Advances in Signal Processing, 2022
Convex clustering has received recently an increased interest as a valuable method for unsupervised learning. Unlike conventional clustering methods such as k-means, its formulation corresponds to solving a convex optimization problem and hence ...
Lidija Fodor   +3 more
doaj   +1 more source

On Some Results in the Geometry of Convex Bodies and their Applications

open access: yesМоделирование и анализ информационных систем, 2015
We give a survey of some results in the geometry of convex bodies and their applications.
M. V. Nevskii
doaj   +1 more source

Continuity of the maximum-entropy inference: Convex geometry and numerical ranges approach [PDF]

open access: yes, 2015
We study the continuity of an abstract generalization of the maximum-entropy inference - a maximizer. It is defined as a right-inverse of a linear map restricted to a convex body which uniquely maximizes on each fiber of the linear map a continuous ...
Arleta Szko La   +7 more
core   +1 more source

Joint Rigid Body Localization and Wireless Signal Transmission Parameter Estimation Under NLOS Environment

open access: yesIEEE Access, 2023
To improve the performance of the rigid body localization (RBL) in the non-line-of-sight (NLOS) environment, this paper delves into a joint estimation method about the wireless signal transmission parameter and the attitude parameters of the rigid body ...
Pengwu Wan   +3 more
doaj   +1 more source

Caenorhinus lobanovi, a new species of the tribe Deporaini (Coleoptera: Rhynchitidae) from Laos [PDF]

open access: yesКавказский энтомологический бюллетень, 2021
A new species, Caenorhinus (Flavodeporaus) lobanovi sp. n. from Central Laos is described and illustrated. This new species differs from Caenorhinus (Flavodeporaus) guskovae Legalov, 2021 from Laos in the unicoloured body (in C.
A.A. Legalov
doaj   +1 more source

Coloring translates and homothets of a convex body [PDF]

open access: yes, 2009
We obtain improved upper bounds and new lower bounds on the chromatic number as a linear function of the clique number, for the intersection graphs (and their complements) of finite families of translates and homothets of a convex body in $\RR^n$.Comment:
A. Gyárfás   +14 more
core   +3 more sources

The Heat Transfer Problem in a Non-Convex Body—A New Procedure for Constructing Solutions

open access: yesAxioms, 2023
The subject of this work is the coupled steady-state conduction-radiation-convection heat transfer phenomenon in a non-convex blackbody, which is represented by a second-order partial differential equation (representing the heat conduction inside the ...
Rogério Martins Saldanha da Gama
doaj   +1 more source

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