Results 51 to 60 of about 12,199,255 (189)

Optical vortices with an infinite number of screw dislocations

open access: yesКомпьютерная оптика, 2021
In optical data transmission with using vortex laser beams, data can be encoded by the topological charge, which is theoretically unlimited. However, the topological charge of a single separate vortex (screw dislocation) is limited by possibilities of ...
A.A. Kovalev
doaj   +1 more source

Modified cosine-quadratic reflectance model

open access: yesInformatyka, Automatyka, Pomiary w Gospodarce i Ochronie Środowiska
In the article, a new light reflectance model is proposed. The model is based on the modified cosine-quadratic bidirectional reflectance distribution function. The concept of bidirectional reflectance distribution function is analyzed. The disadvantages
Oleksandr Romanyuk   +2 more
doaj   +1 more source

Modified Sumudu Transform and Its Properties

open access: yesSakarya Üniversitesi Fen Bilimleri Enstitüsü Dergisi, 2021
Saif et al. (J. Math. Comput. Sci. 21 (2020) 127-135) considered modified Laplace transform and developed some of their certain properties and relations.
Uğur Duran
doaj   +1 more source

Riemann-Liouville Fractional Cosine Functions

open access: yesElectronic Journal of Differential Equations, 2015
In this paper, a new notion, named Riemann-Liouville fractional cosine function is presented. It is proved that a Riemann-Liouville $α$-order fractional cosine function is equivalent to Riemann-Liouville $α$-order fractional resolvents introduced in [Z.D. Mei, J.G. Peng, Y. Zhang, Math. Nachr. 288, No. 7, 784-797 (2015)].
Zhan-Dong Mei, Ji-Gen Peng
openaire   +4 more sources

Fekete–Szegő and Zalcman Functional Estimates for Subclasses of Alpha-Convex Functions Related to Trigonometric Functions

open access: yesMathematics
In this study, we introduce the new subclasses, Mα(sin) and Mα(cos), of α-convex functions associated with sine and cosine functions. First, we obtain the initial coefficient bounds for the first five coefficients of the functions that belong to these ...
Krishnan Marimuthu   +2 more
doaj   +1 more source

An Implementation of Inverse Cosine Hardware for Sound Rendering Applications

open access: yesSensors, 2023
Sound rendering is the process of determining the sound propagation path from an audio source to a listener and generating 3D sound based on it. This task demands complex calculations, including trigonometric functions. This paper presents hardware-based
Jinyoung Lee   +3 more
doaj   +1 more source

Degenerate C-distribution cosine functions and degenerate C-ultradistribution cosine functions in locally convex spaces [PDF]

open access: yesFilomat, 2017
The main purpose of this paper is to investigate degenerate C-(ultra)distribution cosine functions in the setting of barreled sequentially complete locally convex spaces. In our approach, the infinitesimal generator of a degenerate C-(ultra)distribution cosine function is a multivalued linear operator and the regularizing operator C is ...
Daniel Velinov   +2 more
openaire   +3 more sources

A Generation Result for Cosine Functions of Operators

open access: yesZeitschrift für Analysis und ihre Anwendungen, 2009
In this work a generation result for strongly continuous cosine functions of operators is established, and the result is applied to study a geometric property of self-accessible states of linear second order abstract control systems.
Henriquez, Hernan R., Landero H, Carlos
openaire   +5 more sources

LinCos-Softmax: Learning Angle-Discriminative Face Representations With Linearity-Enhanced Cosine Logits

open access: yesIEEE Access, 2020
In recent years, the angle-based softmax losses have significantly improved the performance of face recognition whereas these loss functions are all based on cosine logit.
Wei-Feng Ou   +6 more
doaj   +1 more source

The stability of the sine and cosine functional equations [PDF]

open access: yesProceedings of the American Mathematical Society, 1990
In this work the stability of the functional equations describing the addition theorems for sine and cosine is proved.
openaire   +1 more source

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