Results 11 to 20 of about 309,472 (263)
Facial graceful coloring of plane graphs [PDF]
Opuscula MathematicaLet \(G\) be a plane graph. Two edges of \(G\) are facially adjacent if they are consecutive on the boundary walk of a face of \(G\). A facial edge coloring of \(G\) is an edge coloring such that any two facially adjacent edges receive different colors ...
Július Czap
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Zig-zag facial total-coloring of plane graphs [PDF]
Opuscula Mathematica, 2018 In this paper we introduce the concept of zig-zag facial total-coloring of plane graphs. We obtain lower and upper bounds for the minimum number of colors which is necessary for such a coloring.
Július Czap +2 more
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Do facial expressions develop before birth? [PDF]
, 2011 Background: Fetal facial development is essential not only for postnatal bonding between parents and child, but also theoretically for the study of the origins of affect. However, how such movements become coordinated is poorly understood. 4-D ultrasound
Nadja Reissland +17 more
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Difference of Facial Achromatic Numbers between Two Triangular Embeddings of a Graph
Theory and Applications of Graphs, 2023 A facial $3$-complete $k$-coloring of a triangulation $G$ on a surface is a vertex $k$-coloring such that every triple of $k$-colors appears on the boundary of some face of $G$.
Kengo Enami, Yumiko Ohno
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Colorings of Plane Graphs Without Long Monochromatic Facial Paths
Discussiones Mathematicae Graph Theory, 2021 Let G be a plane graph. A facial path of G is a subpath of the boundary walk of a face of G. We prove that each plane graph admits a 3-coloring (a 2-coloring) such that every monochromatic facial path has at most 3 vertices (at most 4 vertices).
Czap Július +2 more
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Guided Facial Skin Color Correction [PDF]
Signals, 2021 This paper proposes an automatic image correction method for portrait photographs, which promotes consistency of facial skin color by suppressing skin color changes due to background colors. In portrait photographs, skin color is often distorted due to the lighting environment (e.g., light reflected from a colored background wall and over-exposure by a
Keiichiro Shirai +5 more
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Facial Achromatic Number of Triangulations with Given Guarding Number
Theory and Applications of Graphs, 2022 A (not necessarily proper) $k$-coloring $c : V(G) \rightarrow \{1,2,\dots,k\}$ of a graph $G$ on a surface is a {\em facial $t$-complete $k$-coloring} if every $t$-tuple of colors appears on the boundary of some face of $G$.
Naoki Matsumoto, Yumiko OHNO
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3-facial edge-coloring of plane graphs
, 2022 An $\ell$-facial edge-coloring of a plane graph is a coloring of its edges such that any two edges at distance at most $\ell$ on a boundary walk of any face receive distinct colors.
Lužar, Borut +2 more
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Didactic Potential of News Videos in Russian as a Foreign Language Classes [PDF]
Актуальные проблемы филологии и педагогической лингвистики, 2023 The article is devoted to the study of the didactic potential of authentic journalistic news videos in classes in Russian as a foreign language. By authentic materials, authors mean printed texts, videos and audio recordings that students face in ...
Olga A. Zaytseva, Marina V. Terskikh
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Automatic facial analysis for objective assessment of facial paralysis [PDF]
, 2009 Facial Paralysis is a condition causing decreased movement on one side of the face. A quantitative, objective and reliable assessment system would be an invaluable tool for clinicians treating patients with this condition. This paper presents an approach
McGrenary, Stewart +3 more
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