Results 41 to 50 of about 3,335,808 (299)

Temperature Rise Increases the Bioavailability of Marine Synechococcus-Derived Dissolved Organic Matter

open access: yesFrontiers in Microbiology, 2022
Synechococcus is one group of main primary producers and plays a key role in oceanic carbon fixation and transformation. To explore how the temperature rise affects the bioavailability of Synechococcus-derived dissolved organic matter (SOM) and whether ...
Jiajie Zhang   +11 more
doaj   +1 more source

Laplace–Fourier Transform of the Stretched Exponential Function: Analytic Error Bounds, Double Exponential Transform, and Open-Source Implementation “libkww” [PDF]

open access: yesAlgorithms, 2012
The C library libkww provides functions to compute the Kohlrausch–Williams– Watts function, i.e., the Laplace–Fourier transform of the stretched (or compressed) exponential function exp(-tβ ) for exponents β between 0.1 and 1.9 with double precision. Analytic error bounds are derived for the low and high frequency series expansions.
openaire   +4 more sources

Truncated Moments for Heavy-Tailed and Related Distribution Classes

open access: yesMathematics, 2023
Suppose that ξ+ is the positive part of a random variable defined on the probability space (Ω,F,P) with the distribution function Fξ. When the moment Eξ+p of order p>0 is finite, then the truncated moment F¯ξ,p(x)=min1,Eξp1I{ξ>x}, defined for all x⩾0, is
Saulius Paukštys   +2 more
doaj   +1 more source

Criteria for the Application of Double Exponential Transformation

open access: yes, 2017
The double exponential formula was introduced for calculating definite integrals with singular point oscillation functions and Fourier-integrals. The double exponential transformation is not only useful for numerical computations but it is also used in different methods of Sinc theory.
Khatibi, Arezoo, Khatibi, Omid
openaire   +2 more sources

Double-exponential fits to the combined orientational correlation functions of the H57, D81, and S139 active site side chains.

open access: yes, 2023
Double-exponential fits to the combined orientational correlation functions of the H57, D81, and S139 active site side chains.
Michael Feig (775637)   +2 more
core   +1 more source

New Applications and Improvements of Sinc Functions for Solving a System of Fredholm Integral Equations

open access: yesAxioms
This study introduces two novel methodologies for solving systems of Fredholm integral equations, with particular emphasis on second-kind equations. The first method integrates the Sinc-collocation technique with a newly developed singular exponential ...
Saeed Althubiti, Abdelaziz Mennouni
doaj   +1 more source

CLONING AND SEQUENCING OF GENOME SEGMENT 10 OF AFRICAN HORSESICKNESS VIRUS TYPE 9 [PDF]

open access: yesAssiut Veterinary Medical Journal, 1996
African horsesickness virus, Type 9 Plum Island isolate, (AHSV, T9 PI) was p < /strong>ropagated on VERO cells till reaching 70% CPE. The double stranded (ds) RNA genome was extracted using the Phenol Chloroform Method,   CLONING AND SEQUENCING OF ...
A.H. HUSSEIN   +2 more
doaj   +1 more source

A Double Exponential Formula for the Fourier Transforms

open access: yesPublications of the Research Institute for Mathematical Sciences, 2005
From the introduction: We propose a new efficient method that is applicable for the computation of the Fourier transform of a function which may possess a singular point or slowly convergence infinity. The proposed method is based on a generalization of the method of the double exponential (DF) formula. Although it is a widely applicable formula, it is
openaire   +2 more sources

Pricing of a Binary Option Under a Mixed Exponential Jump Diffusion Model

open access: yesMathematics
This paper focuses on the pricing problem of binary options under stochastic interest rates, stochastic volatility, and a mixed exponential jump diffusion model.
Yichen Lu, Ruili Song
doaj   +1 more source

Construction of conformal maps based on the locations of singularities for improving the double exponential formula [PDF]

open access: yesIMA Journal of Numerical Analysis, 2019
The double exponential formula, or DE formula, is a high-precision integration formula using a change of variables called a DE transformation; it has the disadvantage that it is sensitive to singularities of an integrand near the real axis. To overcome
Shunki Kyoya, Ken'ichiro Tanaka
semanticscholar   +1 more source

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