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Starlikness Associated with Cosine Hyperbolic Function [PDF]

open access: yesMathematics, 2020
The main contribution of this article is to define a family of starlike functions associated with a cosine hyperbolic function. We investigate convolution conditions, integral preserving properties, and coefficient sufficiency criteria for this family ...
Abdullah Alotaibi   +3 more
doaj   +4 more sources

Dual-Channel Cosine Function Based ITD Estimation for Robust Speech Separation [PDF]

open access: yesSensors, 2017
In speech separation tasks, many separation methods have the limitation that the microphones are closely spaced, which means that these methods are unprevailing for phase wrap-around.
Xuliang Li   +3 more
doaj   +2 more sources

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 $ $-order fractional cosine function is equivalent to Riemann-Liouville $ $-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   +6 more sources

A new family of alpha power-G using cosine function with applications and regression modeling [PDF]

open access: yesScientific Reports
This paper discusses a novel technique to creating distribution families by combining the transformation of alpha power and the cosine function. The proposed technique have been named the cosine alpha power-generated family.
Amani S. Alghamdi, Shatha F. ALoufi
doaj   +2 more sources

DISTRIBUTION COSINE FUNCTIONS [PDF]

open access: yesTaiwanese Journal of Mathematics, 2006
A class of distribution cosine functions is introduced and systematically analyzed. Connections with (local) integrated cosine functions as well as some characterizations and related examples are given.
Kostić, Marko, Miana, Pedro J.
openaire   +4 more sources

A new Cosine-Weibull model: Distributional properties with applications to basketball and medical sectors

open access: yesAlexandria Engineering Journal, 2023
The two-parameter classical Weibull distribution is commonly implemented to cater for the product’s reliability, model the failure rates, analyze lifetime phenomena, etc. In this work, we study a novel version of the Weibull model for analyzing real-life
Xueyu Wu   +6 more
doaj   +1 more source

A series expansion of a logarithmic expression and a decreasing property of the ratio of two logarithmic expressions containing cosine

open access: yesOpen Mathematics, 2023
In this study, by virtue of a derivative formula for the ratio of two differentiable functions and with aid of a monotonicity rule, the authors expand a logarithmic expression involving the cosine function into the Maclaurin power series in terms of ...
Li Yan-Fang, Qi Feng
doaj   +1 more source

Existence and controllability results for damped second order impulsive functional differential systems with state-dependent delay [PDF]

open access: yesOpuscula Mathematica, 2014
In this paper, we investigate the existence and controllability of mild solutions for a damped second order impulsive functional differential equation with state-dependent delay in Banach spaces.
M. Mallika Arjunan, N. Y. Nadaf
doaj   +1 more source

A Weighted Cosine-G Family of Distributions: Properties and Illustration Using Time-to-Event Data

open access: yesAxioms, 2023
Modeling and predicting time-to-event phenomena in engineering, sports, and medical sectors are very crucial. Numerous models have been proposed for modeling such types of data sets.
Omalsad Hamood Odhah   +3 more
doaj   +1 more source

New Class of Cosine-Sum Windows

open access: yesIEEE Access, 2023
Window functions are required to achieve excellent frequency resolution, peak sidelobe ratio, and sidelobe decay. The cosine-sum window function satisfies these requirements.
Tomoya Yamaoka, Satoshi Kageme
doaj   +1 more source

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