Results 11 to 20 of about 211,072 (304)
Quantum Entanglement of Monochromatic and Non-Monochromatic Photons on a Waveguide Beam Splitter
Entropy, 2021 It is well known that the waveguide beam splitter can be used as a source for the quantum entanglement of photons. The analysis of such quantum entanglement is a difficult problem even for monochromatic photons, since the system under study is ...
Dmitry Makarov, Yuliana Tsykareva
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On the complexity of edge-colored subgraph partitioning problems in network optimization [PDF]
Discrete Mathematics & Theoretical Computer Science, 2016 Network models allow one to deal with massive data sets using some standard concepts from graph theory. Understanding and investigating the structural properties of a certain data set is a crucial task in many practical applications of network ...
Xiaoyan Zhang +3 more
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Vision is protected against blue defocus
Scientific Reports, 2021 Due to chromatic aberration, blue images are defocused when the eye is focused to the middle of the visible spectrum, yet we normally are not aware of chromatic blur. The eye suffers from monochromatic aberrations which degrade the optical quality of all
Clara Benedi-Garcia +5 more
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Study of 20 Hz high spatial-temporal resolution monochromatic X-ray dynamic micro-CT
He jishu, 2023 BackgroundDynamic micro-computed tomography (micro-CT) using monochromatic X-ray offers higher density resolution and lower radiation damage compared to that using white X-ray, however balancing its imaging spatial and temporal resolution is challenging.
QIU Zhengjie +5 more
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Journal of Applied Sciences and Environmental Management, 2019 A one-pot synthetic procedure was successfully used to synthesize monodispersed poly (styrene-butyl acrylate-acrylic acid) (P (St-BA-AA)) colloidal spheres via emulsion polymerization.
I.H. Ifijen +4 more
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Monochromatic Clique Decompositions of Graphs [PDF]
, 2014 Let $G$ be a graph whose edges are coloured with $k$ colours, and $\mathcal H=(H_1,\dots , H_k)$ be a $k$-tuple of graphs. A monochromatic $\mathcal H$-decomposition of $G$ is a partition of the edge set of $G$ such that each part is either a single edge
Győri E. +6 more
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Vertex Colorings without Rainbow Subgraphs
Discussiones Mathematicae Graph Theory, 2016 Given a coloring of the vertices of a graph G, we say a subgraph is rainbow if its vertices receive distinct colors. For a graph F, we define the F-upper chromatic number of G as the maximum number of colors that can be used to color the vertices of G ...
Goddard Wayne, Xu Honghai
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Monochromatic triangles in three-coloured graphs [PDF]
, 2012 In 1959, Goodman determined the minimum number of monochromatic triangles in a complete graph whose edge set is two-coloured. Goodman also raised the question of proving analogous results for complete graphs whose edge sets are coloured with more than ...
Andrew Treglown +27 more
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Decompositions of edge-colored infinite complete graphs into monochromatic paths [PDF]
, 2016 An $r$-edge coloring of a graph or hypergraph $G=(V,E)$ is a map $c:E\to \{0, \dots, r-1\}$. Extending results of Rado and answering questions of Rado, Gy\'arf\'as and S\'ark\"ozy we prove that (1.) the vertex set of every $r$-edge colored countably ...
Elekes, M. +3 more
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Improving Image Quality of Bronchial Arteries with Virtual Monochromatic Spectral CT Images. [PDF]
PLoS ONE, 2016 OBJECTIVE:To evaluate the clinical value of using monochromatic images in spectral CT pulmonary angiography to improve image quality of bronchial arteries.
Guangming Ma +4 more
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