Results 81 to 90 of about 394,346 (266)

Development of a Prediction Model for Progression Risk in High‐Grade Gliomas Based on Habitat Radiomics and Pathomics

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective To investigate the value of constructing models based on habitat radiomics and pathomics for predicting the risk of progression in high‐grade gliomas. Methods This study conducted a retrospective analysis of preoperative magnetic resonance (MR) images and pathological sections from 72 patients diagnosed with high‐grade gliomas (52 ...
Yuchen Zhu   +14 more
wiley   +1 more source

An application of modified systematic sampling in auto-correlated populations

open access: yesKuwait Journal of Science
This study explores the efficiency of modified systematic sampling (MSS) in the context of auto-correlated populations. The MSS scheme is compared to linear systematic sampling (LSS), circular systematic sampling (CSS) and mixed random systematic ...
doaj   +1 more source

Equality of internal angles and vertex points in conformal hyperbolic triangles

open access: yesCumhuriyet Science Journal, 2020
In this article, by using the conformal structure in Euclidean space, the conformal structures in hyperbolic space and the equality of the internal angles and vertex points of conformal triangles in hyperbolic space are given. Especially in these special
Ümit Tokeşer, Ömer Alsan
doaj   +1 more source

Global and Regional Temporal Changes in Cross‐Country Inequalities of Site‐Specific Osteoarthritis Burden, 1990 to 2021

open access: yesArthritis Care &Research, EarlyView.
Objective This study examined the global and regional temporal changes in cross‐country inequalities of site‐specific osteoarthritis (OA) burden from 1990 to 2021. Methods Age‐standardized years lived with disability rates (ASYRs) for site‐specific OA across 204 countries and territories were obtained from the Global Burden of Diseases, Injuries, and ...
Haowei Chen   +14 more
wiley   +1 more source

A class of hyperbolic fractional Kirchhoff equations involving viscoelastic and dissipative terms

open access: yesElectronic Research Archive
This article investigates a class of hyperbolic equations of the fractional Kirchhoff type with viscoelastic and nonlinear terms: \begin{document}$ \left\{ \begin{array}{ll} u_{tt} +M([u]^{2}_{s})(-\Delta)^su-\int_{0}^{t}g(t-\tau)(-\Delta)^su(\tau)d ...
Lijun Zhou, Ning Pan
doaj   +1 more source

An Extension of Poincare Model of Hyperbolic Geometry with Gyrovector Space Approach [PDF]

open access: yesMathematics Interdisciplinary Research, 2016
‎The aim of this paper is to show the importance of analytic hyperbolic geometry introduced in [9]‎. ‎In [1]‎, ‎Ungar and Chen showed that the algebra of the group SL(2, C) naturally leads to the notion of gyrogroups ‎and gyrovector spaces for dealing ...
Mahfouz Rostamzadeh   +1 more
doaj   +1 more source

RELATIVELY HYPERBOLIC GROUPS [PDF]

open access: yesInternational Journal of Algebra and Computation, 2012
In this paper we develop some of the foundations of the theory of relatively hyperbolic groups as originally formulated by Gromov. We prove the equivalence of two definitions of this notion. One is essentially that of a group admitting a properly discontinuous geometrically finite action on a proper hyperbolic space, that is, such that every limit ...
openaire   +3 more sources

Economic Burden of Rheumatoid Arthritis in Low‐ and Middle‐Income Countries: Systematic Review and Meta‐Analysis

open access: yesArthritis Care &Research, EarlyView.
Objective The aim of this systematic review was to synthesize the economic impact of rheumatoid arthritis (RA) on households, health systems, and society in low‐ and middle‐income countries (LMICs). Methods Electronic databases such as PubMed, Web of Science, and CINAHL were searched using keywords related to RA and cost of illness.
Tadesse Gebrye   +6 more
wiley   +1 more source

On the Ambartzumian-Pleijel identity in hyperbolic geometry [PDF]

open access: yes, 2014
We describe a hyperbolic version of the Ambartzumian-Pleijel identity. We use this identity to prove the hyperbolic Crofton formula and the hyperbolic isoperimetric inequality.
Binbin, Xu
core  

Thermal hyperbolic metamaterials

open access: yesOptics Express, 2013
1. We correct several formating mistakes and improve the figure quality 2.
Guo, Yu, Jacob, Zubin
openaire   +3 more sources

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