Results 1 to 10 of about 1,247,719 (274)

A Minimum Rank Approach for Reduction of Environmental Noise in Near-Field Array Antenna Diagnosis [PDF]

open access: yesJournal of Imaging, 2019
A method to filter out the contribution of interference sources in array diagnosis is proposed. The interference-affected near field measured on a surface is treated as a (complex-data) image.
Marco Donald Migliore   +4 more
doaj   +2 more sources

Resolving the taxonomic enigma of Nesocaryum stylosum (Boraginaceae): phylogenetic evidence for its reclassification as Cryptantha stylosa [PDF]

open access: yesPhytoKeys
The classification of Nesocaryum stylosum (Boraginaceae) has remained unresolved for nearly a century. This species is endemic to Isla San Ambrosio, a small island located approximately 900 km due west of the coast of central Chile. Ivan M.
Michael G. Simpson   +10 more
doaj   +4 more sources

Bounds on the Minimum Edge Dominating Energy in Terms of Some Parameters of a Graph [PDF]

open access: yesMathematics Interdisciplinary Research, 2023
‎The minimum edge dominating energy‎, ‎denoted by $EE_{F}(G)$‎, ‎is the sum of the absolute values of eigenvalues of the minimum edge dominating matrix of graph $G$‎.
Fateme Movahedi
doaj   +1 more source

State-independent quantum contextuality with projectors of nonunit rank

open access: yesNew Journal of Physics, 2021
Virtually all of the analysis of quantum contextuality is restricted to the case where events are represented by rank-one projectors. This restriction is arbitrary and not motivated by physical considerations.
Zhen-Peng Xu   +2 more
doaj   +1 more source

Maximum nullity and zero forcing of circulant graphs

open access: yesSpecial Matrices, 2020
The zero forcing number of a graph has been applied to communication complexity, electrical power grid monitoring, and some inverse eigenvalue problems.
Duong Linh   +4 more
doaj   +1 more source

Reducing the rank of a matroid [PDF]

open access: yesDiscrete Mathematics & Theoretical Computer Science, 2015
We consider the rank reduction problem for matroids: Given a matroid $M$ and an integer $k$, find a minimum size subset of elements of $M$ whose removal reduces the rank of $M$ by at least $k$. When $M$ is a graphical matroid this problem is the minimum $
Gwenaël Joret, Adrian Vetta
doaj   +1 more source

Investigating the Efficiency of the 1/N Model in Portfolio Selection [PDF]

open access: yesتحقیقات مالی, 2021
Objective: Since Markowitz's (1952) pioneering work on a single-period investment model, mean-variance portfolio optimization problem has become a cornerstone of investment management in both academic and industrial fields.
Reza Raei, Saeed Bajalan, Alireza Ajam
doaj   +1 more source

Monitoring of aerological risks of accidents in coal mines

open access: yesГорные науки и технологии, 2023
The assessment and management of aerological risks in coal mine accidents are based on the development of a data analytics system that hosts design values for various parameters and subsystems related to coal mines, as well as the real-time monitoring of
Balovtsev S. V.
doaj   +1 more source

Corrigendum to “Achievable Multiplicity partitions in the Inverse Eigenvalue Problem of a graph” [Spec. Matrices 2019; 7:276-290.]

open access: yesSpecial Matrices, 2020
We correct an error in the original Lemma 3.4 in our paper “Achievable Multiplicity partitions in the IEVP of a graph”’ [Spec. Matrices 2019; 7:276-290.]. We have re-written Section 3 accordingly.
Adm Mohammad   +5 more
doaj   +1 more source

Library Services Quality Assessment in Allameh Tabataba'i University Using The Libeb-Kuala Model [PDF]

open access: yesبازیابی دانش و نظام‌های معنایی, 2017
Assessing the quality of the central library servicesinAllameh Tabataba’i University and identifying the Libqual indicators needed for improvement, are the research objectives.Methodology: The survey research method was applied according to the Libqual ...
Ali Jalalidizji, Leyla Jabari
doaj   +1 more source

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