Results 31 to 40 of about 2,243,492 (285)

Strong edge-coloring of planar graphs

open access: yesDiscrete Mathematics, 2014
A strong edge coloring of a graph is a proper edge coloring where the edges at distance at most two receive distinct colors. It is known that every planar graph with maximum degree D has a strong edge coloring with at most 4D + 4 colors. We show that 3D + 6 colors suffice if the graph has girth 6, and 3D colors suffice if the girth is at least 7 ...
Hudák, Dávid   +3 more
openaire   +3 more sources

Local Thermometry of Neutral Modes on the Quantum Hall Edge [PDF]

open access: yes, 2012
A system of electrons in two dimensions and strong magnetic fields can be tuned to create a gapped 2D system with one dimensional channels along the edge.
A Bid   +30 more
core   +1 more source

Strong bulk photovoltaic effect in engineered edge-embedded van der Waals structures

open access: yesNature Communications, 2023
Bulk photovoltaic effect (BPVE), a second-order nonlinear optical effect governed by the quantum geometric properties of materials, offers a promising approach to overcome the Shockley-Quiesser limit of traditional photovoltaic effect and further improve
Zihan Liang   +15 more
doaj   +1 more source

Strong transmission and reflection of edge modes in bounded photonic graphene [PDF]

open access: yes, 2015
The propagation of linear and nonlinear edge modes in bounded photonic honeycomb lattices formed by an array of rapidly varying helical waveguides is studied.
Ablowitz, Mark J., Ma, Yi-Ping
core   +2 more sources

Edge states in a strong magnetic field

open access: yesJournal of Physics A: Mathematical and General, 1994
9 pages, 3 figures available on request, LATEX, report IP-ASTP-16 ...
Bartos, I., Rosenstein, B.
openaire   +2 more sources

Enhanced spatial error concealment with directional entropy based interpolation switching [PDF]

open access: yes, 2006
This paper describes a spatial error concealment method that uses edge related information for concealing missing macroblocks in a way that not only preserves existing edges but also avoids introducing new strong ones.
Agrafiotis, D, Bull, DR, Canagarajah, CN
core   +2 more sources

A SURVEY INTUITIONISTIC FUZZY GRAPH [PDF]

open access: yesFiabilitate şi Durabilitate, 2018
I will begin with the presentation of the basic definitions required for the development of this survey- graph. Rosenfeld [5] first introduced the concept of fuzzy graphs. After that fuzzy graph theory becomes a vast research area. The first definition
Iuliana Carmen BĂRBĂCIORU   +1 more
doaj  

Superpixel Boundary-Based Edge Description Algorithm for SAR Image Segmentation

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Although various methods can effectively segment synthetic aperture radar (SAR) images, we found that the method combining superpixel and image edge information can get better results. To solve the problem that common SAR image segmentation methods often
Ronghua Shang   +4 more
doaj   +1 more source

Collective Edge Modes near the onset of a graphene quantum spin Hall state [PDF]

open access: yes, 2014
Graphene subject to a strong, tilted magnetic field exhibits an insulator-metal transition tunable by tilt-angle, attributed to the transition from a canted antiferromagnetic (CAF) to a ferromagnetic (FM) bulk state at filling factor zero.
Fertig, H. A.   +2 more
core   +3 more sources

Upper Bounds for the Strong Chromatic Index of Halin Graphs

open access: yesDiscussiones Mathematicae Graph Theory, 2018
The strong chromatic index of a graph G, denoted by χ′s(G), is the minimum number of vertex induced matchings needed to partition the edge set of G. Let T be a tree without vertices of degree 2 and have at least one vertex of degree greater than 2.
Hu Ziyu, Lih Ko-Wei, Liu Daphne Der-Fen
doaj   +1 more source

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