Results 261 to 270 of about 2,858,268 (305)

Ring structure digraphs: Spectrum of adjacency matrix and application

Automation and Remote Control, 2010
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Agaev, R. P., Nikiforov, S. V., Andryushina, N. A.   +2 more
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Universal Adjacency Spectrum of the Looped Zero Divisor Graph of $$\mathbb {Z}_n$$

Bulletin of the Malaysian Mathematical Sciences Society, 2022
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Bajaj, Saraswati, Panigrahi, Pratima
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Study on adjacent spectrum of two kinds of joins of graphs

Modern Physics Letters B, 2020
The multiple subdivision graph of a graph [Formula: see text], denoted by [Formula: see text], is the graph obtained by inserting [Formula: see text] paths of length 2 replacing every edge of [Formula: see text]. When [Formula: see text], [Formula: see text] is the subdivision graph of [Formula: see text].
Yongbo Hou, Meifeng Dai, Changxi Dai, Tingting Ju, Yu Sun, Weiyi Su   +5 more
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Adjacent Channel Interference Suppression to Enhance Spectrum Sharing for Co-located Devices

2021 IEEE International Conference on Communications Workshops (ICC Workshops), 2021
The increasing demand for spectrum resources has prompted people to improve spectrum utilization by spectrum sharing technology. However, mutual interference between co-located wireless devices will cause spectrum conflicts and decrease the spectrum utilization.
Xiaolei Huo, Wei Zhang, Wenbo Guo, Chenxing Li, Hongzhi Zhao, Ying Liu   +5 more
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Entropy of the Adjacency Spectrum: A New Graph Invariant

Journal of Advances in Mathematics and Computer Science
We introduce the spectral entropy topological index S(G), defined as the Shannon entropy of the squared adjacency eigenvalues of a simple graph G. This construction converts the adjacency spectrum into a probability distribution and yields a concise ...
S. C G, Bindhu K Thomas
semanticscholar   +1 more source

On distance signless Laplacian spectrum of graphs and spectrum of zero divisor graphs of ℤn

Linear and multilinear algebra, 2020
For a simple connected graph G of order n, we obtain the distance signless Laplacian spectrum of the joined union of regular graphs in terms of their adjacency spectrum and the spectrum of an auxiliary matrix.
S. Pirzada, B. Rather, M. Aijaz, T. A. Chishti   +3 more
semanticscholar   +1 more source

Spectrum of skin diseases in Yemen (Hajjah and adjacent region)

International Journal of Dermatology, 2004
AbstractBackground  Epidemiological study of skin diseases from Yemen is not available, although some data has been published from nearby Arab countries.Objective  To determine the pattern of skin diseases in Yemen and particularly in Hajjah and nearby regions.Methods  This is a prospective study and analysis of the consecutive new patients attending ...
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Nonlinear Spectrum-Spreading Interference Effects Between Adjacent Satellite Transponders

IEEE Transactions on Communications, 1975
For communications satellites carrying a phase-shift keying (PSK) modulated carrier in one transponder and FM carriers in neighboring transponders, there is a potential adjacent interference effect from the PSK carrier into the FM carriers. In this correspondence the noise-power ratio (NPR) degradation is calculated for the top voice channels of the FM
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Universal adjacency spectrum of the commuting and non-commuting graphs on AC-groups

Asian-European Journal of Mathematics, 2023
For a simple undirected graph [Formula: see text] and [Formula: see text], [Formula: see text], the universal adjacency matrix [Formula: see text], where [Formula: see text] is the identity matrix, [Formula: see text] is the all-ones matrix, and [Formula: see text] and [Formula: see text] are the adjacency and degree diagonal matrices of [Formula: see
Bajaj, Saraswati, Panigrahi, Pratima
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PMEPR mitigation using adjacent bands of standards under spectrum mask constraint

2008 14th European Wireless Conference, 2008
This paper addresses a method to mitigate the peak to mean power ratio (PMEPR) of orthogonal frequency division multiplexing (OFDM) signals. The idea is to use adjacent bands of the OFDM spectrum to allocate optimized subcarriers so as to decrease the signal PMEPR with the help of SOCP optimization process.
Louët, Yves, Palicot, Jacques, Zabré, Sidkiéta   +2 more
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