Results 71 to 80 of about 217,218 (245)

Revisiting reliability and measurement precision: Towards a unified perspective

British Journal of Mathematical and Statistical Psychology, EarlyView.
Abstract This article revisits the concepts of reliability and measurement precision across classical test theory (CTT), item response theory (IRT) and cognitive diagnosis models (CDMs), emphasizing their conceptual differences and proposing a unified framework.
Jimmy de la Torre, Klaas Sijtsma, Rodrigo Schames Kreitchmann   +2 more
wiley   +1 more source

Research on Optimal Quadrature Problems in the ${\mathit{W}}_{\mathbf{2}}^{\mathbf{(}\mathbf{9}\mathbf{,}\mathbf{0}\mathbf{)}}$ Space

Axioms
In this paper, we derive an explicit expression for the coefficients of optimal quadrature formulas that are exact for exponential trigonometric functions in the W2(9,0) space.
Ying Yang, Xuehua Li
doaj   +1 more source

Optimal cubature formulas for approximate integrals of functions defined on a sphere in three-dimensional space [PDF]

E3S Web of Conferences
The development of effective methods of approximate calculation of integrals using optimal cubature formulas and optimal quadrature formulas with trigonometric weights for defined functions on a sphere, the creation of new algorithms for approximate ...
Bozarov Bakhromjon, Daliyev Bakhtiyor, Tukxtasinov Dadakhon, Nasriddinov Otadavlat, Ruzimatova Makhfuza, Botirova Nasiba   +5 more
doaj   +1 more source

SDFs from Unoriented Point Clouds using Neural Variational Heat Distances

Computer Graphics Forum, EarlyView.
We propose a novel variational approach for computing neural Signed Distance Fields (SDF) from unoriented point clouds. We first compute a small time step of heat flow (middle) and then use its gradient directions to solve for a neural SDF (right). Abstract We propose a novel variational approach for computing neural Signed Distance Fields (SDF) from ...
Samuel Weidemaier, Florine Hartwig, Josua Sassen, Sergio Conti, Mirela Ben‐Chen, Martin Rumpf   +5 more
wiley   +1 more source

Computation of certain integral formulas involving generalized Wright function

Advances in Difference Equations, 2020
The aim of the paper is to derive certain formulas involving integral transforms and a family of generalized Wright functions, expressed in terms of the generalized Wright hypergeometric function and in terms of the generalized hypergeometric function as
Nabiullah Khan, Talha Usman, Mohd Aman, Shrideh Al-Omari, Serkan Araci   +4 more
doaj   +1 more source

Phong‐Rodrigues Extrinsic Vector‐Field Processing

Computer Graphics Forum, EarlyView.
Abstract We introduce a new extrinsic discretization of tangent vector fields on triangle meshes that is continuous, with bounded derivatives that are continuous almost everywhere, supporting pointwise evaluation and integration of differential operators.
Hongyi Liu, Oded Stein, Amir Vaxman, Mirela Ben‐Chen, Misha Kazhdan   +4 more
wiley   +1 more source

Newton-Cotes Quadrature Formulas

, 2011
This Demonstration shows the Newton–Cotes quadrature formulas of integration and their application to the integration of sin(x)Componente Curricular::Educação Superior::Ciências Exatas e da Terra ...
Sevilla, Eugenio Bravo
core   +2 more sources

The numerical solution of an Abel integral equation by the optimal quadrature formula

Results in Applied Mathematics
In this study, a novel and efficient approach utilizing optimal quadrature formulas is introduced to derive approximate solutions for generalizing Abel’s integral equations. The method, characterized by high accuracy and simplicity, involves constructing
Abdullo Hayotov, Samandar Babaev, Bobomurod Boytillayev   +2 more
doaj   +1 more source

Quadrature Formula For Sampled Functions

, 2010
This paper deals with efficient quadrature formulas involving functions that are observed only at fixed sampling points. The approach that we develop is derived from efficient continuous quadrature formulas, such as Gauss-Legendre or Clenshaw-Curtis quadrature.
Minaoui, Khalid, Chonavel, Thierry, Nsiri, Benayad, Aboutajdine, Driss   +3 more
openaire   +2 more sources

Quadrature Formulae and Polynomial Inequalities

Journal of Approximation Theory, 1997
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Guessab, A, Rahman, Q.I
openaire   +1 more source