Results 11 to 20 of about 1,550,178 (378)

Occupancy fraction, fractional colouring, and triangle fraction [PDF]

open access: yesJournal of Graph Theory, 2021
13 ...
Davies, Ewan   +3 more
openaire   +4 more sources

Fractional Hypocoercivity [PDF]

open access: yesCommunications in Mathematical Physics, 2022
This paper is devoted to kinetic equations without confinement. We investigate the large time behaviour induced by collision operators with fat tailed local equilibria. Such operators have an anomalous diffusion limit. In the appropriate scaling, the macroscopic equation involves a fractional diffusion operator so that the optimal decay rate is ...
Bouin, Emeric   +2 more
openaire   +3 more sources

Fractional free space, fractional lenses, and fractional imaging systems [PDF]

open access: yesJournal of the Optical Society of America A, 2003
Continuum extensions of common dual pairs of operators are presented and consolidated, based on the fractional Fourier transform. In particular, the fractional chirp multiplication, fractional chirp convolution, and fractional scaling operators are defined and expressed in terms of their common nonfractional special cases, revealing precisely how they ...
Sümbül, U., Ozaktas, H., M.
openaire   +3 more sources

Fractional Programming for Communication Systems—Part I: Power Control and Beamforming [PDF]

open access: yesIEEE Transactions on Signal Processing, 2018
Fractional programming (FP) refers to a family of optimization problems that involve ratio term(s). This two-part paper explores the use of FP in the design and optimization of communication systems.
Kaiming Shen, Wei Yu
semanticscholar   +1 more source

Infrared Dim and Small Target Detection Based on Greedy Bilateral Factorization in Image Sequences

open access: yesIEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 2020
Fast and stable detection of dim and small infrared (IR) targets in complex backgrounds has important practical significance for IR search and tracking system.
Dongdong Pang   +5 more
doaj   +1 more source

Fractional coalescent [PDF]

open access: yesProceedings of the National Academy of Sciences, 2019
An approach to the coalescent, the fractional coalescent ( f -coalescent), is introduced. The derivation is based on the discrete-time Cannings population model in which the variance of the number of ...
Mashayekhi, Somayeh, Beerli, Peter
openaire   +2 more sources

On conformable fractional calculus

open access: yesJournal of Computational and Applied Mathematics, 2015
Thabet Abdeljawad
exaly   +2 more sources

A Survey of Fractional Order Calculus Applications of Multiple-Input, Multiple-Output (MIMO) Process Control

open access: yesFractal and Fractional, 2020
Multiple-input multiple-output (MIMO) systems are usually present in process systems engineering. Due to the interaction among the variables and loops in the MIMO system, designing efficient control systems for both servo and regulatory scenarios remains
Alexandre Marques de Almeida   +2 more
doaj   +1 more source

Positive electrical circuits with the chain structure and cyclic Metzler state matrices [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2021
The cyclicity of the state matrices of positive linear electrical circuits with the chain structure is considered. Two classes of positive linear electrical circuits with the chain structure and cyclic Metzler state matrices are analyzed.
Tadeusz Kaczorek
doaj   +1 more source

The pointwise completeness and the pointwise degeneracy of fractional descriptor discrete-time linear systems [PDF]

open access: yesBulletin of the Polish Academy of Sciences: Technical Sciences, 2019
The Drazin inverse of matrices is applied to analysis of the pointwise completeness and of the pointwise degeneracy of the fractional descriptor linear discrete-time systems.
T. Kaczorek
doaj   +1 more source

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