Results 61 to 70 of about 775,463 (344)

On the planar edge-length ratio of planar graphs

open access: yesJournal of Computational Geometry, 2019
The edge-length ratio of a straight-line drawing of a graph is the ratio between the lengths of the longest and of the shortest edge in the drawing. The planar edge-length ratio of a planar graph is the minimum edge-length ratio of any planar straight-line drawing of the graph. In this paper, we study the planar edge-length ratio of planar graphs.
Borrazzo, Manuel, Frati, Fabrizio
openaire   +4 more sources

COMPARATIVE STUDY OF THE THERMO-CONVECTIVE BEHAVIOR OF A TURBULENT FLOW IN A RECTANGULAR DUCT IN THE PRESENCE OF THREE PLANAR BAFFLES AND/OR CORRUGATED (WAVED) [PDF]

open access: yesJournal of Engineering Science and Technology, 2018
This study numerically examines the behaviour of a two-dimensional turbulent flow of air in a rectangular pipe with three flat or corrugated baffles. A realizable k-ε turbulence model is used and the conservation equations are solved by the finite volume
HAMIDOU BENZENINE   +3 more
doaj  

Cervical Spinal Cord Magnetization Transfer Ratio and Its Relationship With Clinical Outcomes in Multiple Sclerosis

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Objective The cervical spinal cord (cSC) is highly relevant to clinical dysfunction in multiple sclerosis (MS) but remains understudied using quantitative magnetic resonance imaging (MRI). We assessed magnetization transfer ratio (MTR), a semi‐quantitative MRI measure sensitive to MS‐related tissue microstructural changes, in the cSC and its ...
Lisa Eunyoung Lee   +26 more
wiley   +1 more source

Planarity of Streamed Graphs [PDF]

open access: yesTheoretical Computer Science, 2015
In this paper we introduce a notion of planarity for graphs that are presented in a streaming fashion. A $\textit{streamed graph}$ is a stream of edges $e_1,e_2,...,e_m$ on a vertex set $V$. A streamed graph is $ω$-$\textit{stream planar}$ with respect to a positive integer window size $ω$ if there exists a sequence of planar topological drawings $Γ_i$
Da Lozzo G., Rutter I.
openaire   +5 more sources

Technological Indicators of the Operation of Cutting Blanks from Sheet Material with a Wire Tool with a Modified Surface by Electroerosion Method

open access: yesМеханика машин, механизмов и материалов, 2020
The article is devoted to the experimental evaluation of the effect of EDM modifying the original smooth surface of the wire tool on its technological parameters when cutting different sheet materials, in particular, on cutting ability, surface quality ...
Mikhail G. Kiselev   +4 more
doaj  

A Planar Multifunctional Four-Port Antenna System for Sub-Urban Mobile Tablet

open access: yesIEEE Access, 2019
A planar multifunctional four-port antenna system integrated on one substrate applied in the suburban mobile tablet is presented in this paper. The types of these antennas are selected based on different functions and the interactions between them are ...
Li Ying Nie   +3 more
doaj   +1 more source

Design of planar four-antenna system for single soldier handheld terminal

open access: yesDianzi Jishu Yingyong, 2021
The planar integration design of the antenna system for soldier terminals is presented in this paper based on the requirements of the miniaturization and high integration. A four-antenna system including recieving and transmitting Ad-Hoc network antennas,
Zhou Wenhui
doaj   +1 more source

Quantitative Shape Irregularity and Density Heterogeneity Predict Hematoma Expansion in Patients With Intracerebral Hemorrhage

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Purpose This study aimed to explore the association between quantitative shape irregularity and density heterogeneity of hematomas and hematoma expansion (HE) for intracerebral hemorrhage (ICH) patients. Methods This cohort study included patients arriving within 24 h of symptom onset between August 2021 and July 2022 as the derivation cohort ...
Zeqiang Ji   +11 more
wiley   +1 more source

Refolding planar polygons [PDF]

open access: yesProceedings of the twenty-second annual symposium on Computational geometry, 2004
This paper describes an algorithm for generating a guaranteed intersection-free interpolation sequence between any pair of compatible polygons. Our algorithm builds on prior results from linkage unfolding, and if desired it can ensure that every edge length changes monotonically over the course of the interpolation sequence. The computational machinery
Iben, Hayley N.   +2 more
openaire   +9 more sources

Recent advances in planar optics: from plasmonic to dielectric metasurfaces

open access: yes, 2017
This article reviews recent progress leading to the realization of planar optical components made of a single layer of phase shifting nanostructures.
P. Genevet   +4 more
semanticscholar   +1 more source

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