Results 11 to 20 of about 176,132 (261)

Cost-effective Sampling Design Applied to Large-scale Monitoring of Boreal Birds

open access: yesEcology and Society, 2002
Despite their important roles in biodiversity conservation, large-scale ecological monitoring programs are scarce, in large part due to the difficulty of achieving an effective design under fiscal constraints.
Matthew Carlson, Fiona Schmiegelow
doaj   +1 more source

Derivation of Stochastic Equations for Computational Uncertainties in Petro-Physical Properties Using a Simplified Algorithm

open access: yesJournal of Applied Sciences and Environmental Management, 2017
This paper presents a simple mathematical algorithm or procedure for computing the uncertainties at the various percent of data input, using the stochastic approach of simulating the input variables to compute the output variables.
O Adekunle Sofolabo   +2 more
doaj   +1 more source

NeuralSens: Sensitivity Analysis of Neural Networks

open access: yesJournal of Statistical Software, 2022
This article presents the NeuralSens package that can be used to perform sensitivity analysis of neural networks using the partial derivatives method. The main function of the package calculates the partial derivatives of the output with regard to the ...
Jaime Pizarroso   +2 more
doaj   +1 more source

THE SECOND PROJECTION OF THE MOTION EQUATION IN THE CYLINDRICAL COORDINATE SYSTEM

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2016
The complex flows of viscous compressible heat-conducting gas arising during heating the vertical field, have a pronounced axial symmetry. Therefore, for the numerical solution of the complete Navier-Stokes equations system to describe such gas flows it ...
D. D. Barannikova, A. G. Obukhov
doaj   +1 more source

THE MODELING OF THE EXPLOITATION PROCESS OF GAS DEPOSIT ACCORDING TO INHOMOGENEOUS STRATUM STRUCTURE

open access: yesСовременная наука и инновации, 2022
The article is provided the process of mathematical modeling process of gas deposit according to its inhomo_geneous structure. The discrete analogue of the mathematical model was created to perform a computational experiment.
Artem Viktorovich Plotnikov
doaj  

THE THIRD PROJECTION OF THE MOTION EQUATION IN THE CYLINDRICAL COORDINATE SYSTEM

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2017
Sophisticated viscous compressible heat-conducting gases arising during heating the vertical field, have a pronounced axial symmetry. Therefore, for the numerical solution of the full Navier-Stokes equations to describe such gas flows is advisable to use
D. D. Barannikova, A. G. Obukhov
doaj   +1 more source

Schur partial derivative operators

open access: yesEuropean Journal of Combinatorics, 2005
8 pages ...
Jean-Christophe Aval, Nantel Bergeron
openaire   +3 more sources

EQUIATION OF ENERGY WITH ALLOWANCE OF EFFECTS OF DISSIPATION IN CYLINDRYCAL COORDINATE SYSTEM

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2017
Complex flows of a viscous compressible heat-conducting gas in ascending swirling flows have a pro-nounced axial symmetry. Therefore, for the numerical solution of the complete system of Navier - Stokes equations to describe such gas flows, it is ...
N. V. Nesterovich, A. G. Obukhov
doaj   +1 more source

Nonlinear differential equation with first order partial derivatives

open access: yesВестник КазНУ. Серия математика, механика, информатика, 2018
The asymptotic behavior of solutions of a nonlinear differential equation with first-order partial derivatives solved with respect to one of the derivatives is investigated.
T. М. Aldibekov, M. M. Aldazharova
doaj   +1 more source

FIRST PROJECTION OF THE EQUATION OF MOTION IN THE CYLINDRICAL COORDINATE SYSTEM

open access: yesИзвестия высших учебных заведений: Нефть и газ, 2016
It is proved that complex flows of the viscous compressible heat-conducting gas, arising during heating the vertical field, have a pronounced axial symmetry.
A. G. Obukhov, R. E. Volkov
doaj   +1 more source

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