Results 31 to 40 of about 31,508 (275)

Comparing the Simple to Complex Automatic Methods with the Ensemble Approach in Forecasting Electrical Time Series Data

open access: yesEnergies, 2023
The importance of forecasting in the energy sector as part of electrical power equipment maintenance encourages researchers to obtain accurate electrical forecasting models.
Winita Sulandari   +5 more
doaj   +1 more source

The unit ratio-extended Weibull family and the dropout rate in Brazilian undergraduate courses.

open access: yesPLoS ONE, 2023
We propose a new family of distributions, so-called the unit ratio-extended Weibull family ([Formula: see text]). It is derived from ratio transformation in an extended Weibull random variable.
Fernando A Peña-Ramírez   +2 more
doaj   +1 more source

Numerical computation of water and solitary waves by the double exponential transform

open access: yesJournal of Computational and Applied Mathematics, 2003
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Kobayashi, K., Okamoto, H., Zhu, J.
openaire   +2 more sources

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

Numerical Solution of Initial Value Problems Based on the Double Exponential Transformation

open access: yesPublications of the Research Institute for Mathematical Sciences, 2005
The purpose of this paper is to present a method for approximate solution of initial value problems of ordinary differential equation by the double exponential transformation. The original problem is transformed into a Volterra integral equation and it is solved via the indefinite integration formula derived by Muhammad and Mori.
Nurmuhammad, Ahniyaz   +2 more
openaire   +2 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

Double exponential transformation for computing three-center nuclear attraction integrals

open access: yesMolecular Physics, 2019
Three-centre nuclear attraction integrals, which arise in density functional and \textit{ab initio} calculations, are one of the most time-consuming computations involved in molecular electronic structure calculations. Even for relatively small systems, millions of these laborious calculations need to be executed.
Lovrod, Jordan, Safouhi, Hassan
openaire   +2 more sources

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 EULER–SINC COLLOCATION METHOD FOR A TIME–FRACTIONAL CONVECTION–DIFFUSION EQUATION [PDF]

open access: yes, 2019
In this research, a new version of Sinc-collocation method incorporated with a Double Exponential (DE) transformation is implemented for a class of convectiondiffusion equations that involve time fractional derivative in the Caputo sense.
Eftekhari, Ali
core   +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

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