Results 21 to 30 of about 12,597 (223)

Alternate Entropy Computations by Applying Recurrence Matrix Masking

open access: yesEntropy, 2021
In practicality, recurrence analyses of dynamical systems can only process short sections of signals that may be infinitely long. By necessity, the recurrence plot and its quantifications are constrained within a truncated triangle that clips the signals
Charles L. Webber
doaj   +1 more source

Non-rigid registration of medical images based on S 2 1 Δ mn 2 $$ {S}_2^1\left({\Delta}_{mn}^{(2)}\right) $$ non-tensor product B-spline

open access: yesVisual Computing for Industry, Biomedicine, and Art, 2022
In this study, a non-tensor product B-spline algorithm is applied to the search space of the registration process, and a new method of image non-rigid registration is proposed.
Qi Zheng, Chaoyue Liu, Jincai Chang
doaj   +1 more source

On an infinite family of unipotent Sylvester–Kac-like matrices [PDF]

open access: yesNotes on Number Theory and Discrete Mathematics
Classical Sylvester-Kac matrices are tridiagonal integral matrices with positive off-diagonal entries and fully integral spectra. Here, by relaxing the positivity requirement and using a lower Pascal triangle framework, we define, for each positive ...
Zhibin Du, Carlos M. da Fonseca
doaj   +1 more source

Linear Determination of a Camera's Intrinsic Parameters Using Two Intersecting Circles

open access: yesInternational Journal of Advanced Robotic Systems, 2014
An approach using two intersecting circles is proposed as a linear approach for determining a camera's intrinsic parameters. The two intersecting coplanar circles have four intersection points in the projective plane: two real points and two circular ...
Xu Chen, Yue Zhao, Fu ShengNan
doaj   +1 more source

Capacity Improvement of 3D-OCDMA-PON Hybrid System Next Generation Using Weight Zero Cross Correlation Code

open access: yesApplied Sciences, 2023
This paper proposes a novel code for optical code division multiple access (OCDMA) systems, called the three-dimensional (3D) spectral/temporal/spatial single weight zero cross-correlation (3D-SWZCC) code.
Abdelhamid Cherifi   +5 more
doaj   +1 more source

FLAG Review 2021

open access: yesEuropean Physical Journal C: Particles and Fields, 2022
We review lattice results related to pion, kaon, D-meson, B-meson, and nucleon physics with the aim of making them easily accessible to the nuclear and particle physics communities.
Y. Aoki   +37 more
doaj   +1 more source

Mechanical properties of frozen rock mass with two diagonal intersected fractures

open access: yesInternational Journal of Mining Science and Technology, 2018
Based on previous research results, this paper investigated the influence of fracture morphology on mechanical properties and failure modes of rock mass with two diagonal intersected fractures.
Hao Yang   +4 more
doaj   +1 more source

Modeling of chemical interaction in the ternary reciprocal system K+,Cd2+|| F- ,Cl [PDF]

open access: yesИзвестия Саратовского университета. Новая серия: Серия Химия. Биология. Экология
The substances that make up the three-component reciprocal system of fl uorides and chlorides of potassium and cadmium have various applications, both individually and in mixtures.
Garkushin, Ivan K.   +3 more
doaj   +1 more source

On Some Properties of a Complete Quadrangle

open access: yesAppliedMath
In this paper, we study the properties of a complete quadrangle in the Euclidean plane. The proofs are based on using rectangular coordinates symmetrically on four vertices and four parameters a,b,c,d.
Vladimir Volenec   +2 more
doaj   +1 more source

Isoptic Point of the Complete Quadrangle

open access: yesAxioms
In this paper, we study the complete quadrangle. We started this investigation in a few of our previous papers. In those papers and here, the rectangular coordinates are used to enable us to prove the properties of the rich geometry of a quadrangle using
Ema Jurkin   +2 more
doaj   +1 more source

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