Results 21 to 30 of about 379,486 (309)

A Sensitive and Versatile Thickness Determination Method Based on Non-Inflection Terahertz Property Fitting

open access: yesSensors, 2019
The accuracy of thin-film characterization in terahertz spectroscopy is mainly set by the thickness uncertainty. Physical thickness measurement has limited accuracy for thin-film samples thinner than a few hundreds of micrometers and is sometimes even ...
Xuequan Chen, Emma Pickwell-MacPherson
doaj   +1 more source

Improved Convolutional Neural Network Based on Fast Exponentially Linear Unit Activation Function

open access: yesIEEE Access, 2019
The activation functions play increasingly important roles in deep convolutional neural networks. The traditional activation functions have some problems such as gradient disappearance, neuron death and output offset, and so on.
Zheng Qiumei, Tan Dan, Wang Fenghua
doaj   +1 more source

On Coefficient Inequalities of Starlike Functions Related to the q-Analog of Cosine Functions Defined by the Fractional q-Differential Operator

open access: yesFractal and Fractional, 2023
This article extends the study of q-versions of analytic functions by introducing and studying the association of starlike functions with trigonometric cosine functions, both defined in their q-versions.
Yusra Taj   +5 more
doaj   +1 more source

QUANTUM EXPONENTIAL FUNCTION [PDF]

open access: yesReviews in Mathematical Physics, 2000
A special function playing an essential role in the construction of quantum "ax+b"-group is introduced and investigated. The function is denoted by Fℏ(r,ϱ), where ℏ is a constant such that the deformation parameter q2=e-iℏ. The first variable r runs over non-zero real numbers; the range of the second one depends on the sign of r: ϱ=0 for r>0 and ϱ=±
openaire   +2 more sources

Exponential integrability of stochastic convolutions [PDF]

open access: yes, 2003
Sucient conditions are found for stochastic convolution integrals driven by a Wiener process in a Hilbert space to belong to the Orlicz space expL2; standard exponential tail estimates follow from these results.
Seidler, Jan, Sobukawa, Takuya
core   +1 more source

From Powers to Exponential Function [PDF]

open access: yes, 2019
The construction of the exponential function of a real exponent from the definition of the powers of a real number, and its properties, requires the notion of successions, a decimal approximation of a rational number, convergence, and limit of a function.
Sureda Figueroa, Diana Patricia   +1 more
core   +1 more source

Convolutions involving the exponential function and the exponential integral [PDF]

open access: yesMathematica Moravica, 2015
The exponential integral ei(λx) and its associated functions ei+(λx) and ei-(λx) are defined as locally summable functions on the real line and their derivatives are found as distributions.
Fisher Brian, Al-Sirehy Fatma
doaj  

Modeling of Variations in Price for Standard Rooms in Polish Hotels [PDF]

open access: yesProblemi Ekonomiki, 2023
The world market of hotel services is constantly changing, has a dynamic structure, develops in interaction with other markets of goods and services, is influenced by the market environment.
Lysenko Olena V.
doaj   +1 more source

On Transcendental Numbers

open access: yesAxioms, 2014
Transcendental numbers play an important role in many areas of science. This paper contains a short survey on transcendental numbers and some relations among them.
Florin F. Nichita
doaj   +1 more source

Periodic solutions in multivariate invariance arguments [PDF]

open access: yesOpuscula Mathematica, 2013
Inspired by the recent results of A. E. Abbas we determine continuous multivariate utility functions invariant with respect to a wide family of transformations related to the shift transformations.
Jacek Chudziak, Sebastian Wójcik
doaj   +1 more source

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