Results 21 to 30 of about 5,481,811 (291)

Similarity Measures of T-Spherical Fuzzy Sets Based on the Cosine Function and Their Applications in Pattern Recognition

open access: yesIEEE Access, 2020
In this manuscript, nine similarity measures of T-spherical fuzzy set (TSFS) considering the membership degree, the hesitancy degree, the non-membership degree and the refusal degree are developed according to the cosine function.
Mei-Qin Wu, Ting-You Chen, Jian-Ping Fan
doaj   +1 more source

Extended Wang sum and associated products.

open access: yesPLoS ONE, 2022
The Wang sum involving the exponential sums of Lerch's Zeta functions is extended to the finite sum of the Huwitz-Lerch Zeta function to derive sums and products involving cosine and tangent trigonometric functions.
Robert Reynolds, Allan Stauffer
doaj   +1 more source

Almost-distribution cosine functions and integrated cosine functions [PDF]

open access: yesStudia Mathematica, 2005
Operator valued cosine functions were introduced in the 1950s to solve well-posed abstract second order Cauchy problems. Later, in analogy to operator semigroup theory, the strong continuity conditions were weakened to be able to treat also ill-posed problems.
openaire   +1 more source

An improved architecture for the adaptive discrete cosine transform [PDF]

open access: yes, 1996
This paper presents a new approach to the efficient realisation of the discrete cosine transform for the specific case of interlaced image sequence coding.
Martin, F   +3 more
core   +1 more source

Novel cosine similarity measures on CIFS and its applications [PDF]

open access: yesJournal of Fuzzy Extension and Applications
In the evolving field of decision science, accurately measuring similarity under uncertainty remains a critical challenge. Despite significant advancements in developing CSMs for IFS and IVIFS, these approaches fall short of capturing the dual ...
Saranya Manoharan   +2 more
doaj   +1 more source

The Cosine-Sine Functional Equation on Semigroups [PDF]

open access: yesAnnales Mathematicae Silesianae, 2021
Abstract The primary object of study is the “cosine-sine” functional equation f ( xy ) = f ( x ) g (
openaire   +3 more sources

Taylor’s series expansions for real powers of two functions containing squares of inverse cosine function, closed-form formula for specific partial Bell polynomials, and series representations for real powers of Pi

open access: yesDemonstratio Mathematica, 2022
In this article, by virtue of expansions of two finite products of finitely many square sums, with the aid of series expansions of composite functions of (hyperbolic) sine and cosine functions with inverse sine and cosine functions, and in the light of ...
Qi Feng
doaj   +1 more source

Digital shaping methods for nuclear pulse signal based on cosine function

open access: yesHe jishu, 2023
BackgroundCosine function shaping (or cos shaping) is used to digitally shape nuclear pulse signals, as the shaping method is simple and has high operability and flexibility.PurposeThis study aims to explore different cosine shaping methods of nuclear ...
WEI Yong   +3 more
doaj   +1 more source

Adaptive function approximation based on the Discrete Cosine Transform (DCT) [PDF]

open access: yes, 2023
This paper studies the cosine as basis function for the approximation of univariate and continuous functions without memory. This work studies a supervised learning to obtain the approximation coefficients, instead of using the Discrete Cosine Transform (
Pérez-Neira, Ana I.   +2 more
core   +1 more source

Analysis of ultradian rest-activity rhythms using locomotor activity in mice [PDF]

open access: yesKosin Medical Journal, 2022
Background Locomotor activity in mice may have an ultradian rest-activity rhythm. However, to date, no study has shown how locomotor activity can be explained statistically using fitted cosine curves.
Jung Hyun Lee   +4 more
doaj   +1 more source

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