Results 51 to 60 of about 25,818 (165)

A numerical method for solving a complete hypersingular integral equation of the second kind and its justification

open access: yesMathematical Modelling and Analysis, 2023
A complete hypersingular integral equation of the second kind was obtained as a boundary integral equation for the diffraction and scattering problem of electromagnetic waves in space separated by the periodically placed non-perfectly conducting strips.
Oleksii V. Kostenko
doaj   +1 more source

Physics‐Driven Deep Neural Networks for Solving the Optimal Transport Problem Associated With the Monge–Ampère Equation

open access: yesCAAI Transactions on Intelligence Technology, EarlyView.
ABSTRACT Monge–Ampère equations (MAEs) are fully nonlinear second‐order partial differential equations (PDEs), which are closely related to various fields including optimal transport (OT) theory, geometrical optics and affine geometry. Despite their significance, MAEs are extremely challenging to solve.
Xinghua Pan, Zexin Feng, Kang Yang
wiley   +1 more source

Error Estimates for the Nearly Singular Momentum-Space Bound-State Equations

open access: yesAdvances in Mathematical Physics, 2020
We present errors of quadrature rules for the nearly singular integrals in the momentum-space bound-state equations and give the critical value of the nearly singular parameter.
Yang-Hong Zhang, Jiao-Kai Chen
doaj   +1 more source

Embedded Exponentially-Fitted Explicit Runge-Kutta-Nyström Methods for Solving Periodic Problems

open access: yesComputation, 2020
In this work, a pair of embedded explicit exponentially-fitted Runge–Kutta–Nyström methods is formulated for solving special second-order ordinary differential equations (ODEs) with periodic solutions.
Musa Ahmed Demba   +3 more
doaj   +1 more source

The Swedish National Pediatric Cataract Register (PECARE): Coexisting systemic disorders 2007–2023

open access: yesActa Ophthalmologica, EarlyView.
Abstract Purpose To analyse the frequency and type of coexisting systemic disorders in children operated on for cataract in Sweden. Methods Data were retrieved from the Swedish National Pediatric Cataract Register (PECARE) for children operated between January 1, 2007, and December 31, 2023 (n = 975), including follow‐ups at age 1, 2, 5 and 10 ...
David Wackerberg   +9 more
wiley   +1 more source

Solving magnetic induction heating problem with multidimensional Fredholm integral equation methods: Alternative approach for optimization and evaluation of the process performance

open access: yesAIP Advances, 2022
Induction heating is a frequently used technology in both fundamental and applied research. It is heavily exploited in the industry for processing materials by heat treatments.
J. Rak, J. Tucek
doaj   +1 more source

Learning with SGD and Random Features [PDF]

open access: yes, 2018
Sketching and stochastic gradient methods are arguably the most common techniques to derive efficient large scale learning algorithms. In this paper, we investigate their application in the context of nonparametric statistical learning.
Carratino, Luigi   +2 more
core   +1 more source

Distribution of the k-th smallest Dirac operator eigenvalue : an update

open access: yes, 2016
Based on the exact relationship to random matrix theory, we present an alternative method of evaluating the probability distribution of the k-th smallest Dirac eigenvalue in the epsilon-regime of QCD and QCD-like theories.
Nishigaki, Shinsuke M.
core   +1 more source

Start(up) with purpose: How goal‐ and duty‐based purpose drive work engagement and performance in startups

open access: yesEuropean Management Review, EarlyView.
ABSTRACT Although organizational purpose (OP) has recently gained attention in entrepreneurship research, its motivational potential in startups remains underexplored, limiting the development of effective purpose‐driven strategies to enhance employee work engagement (WE) and startup performance.
Julien A. Nussbaum   +3 more
wiley   +1 more source

Using Recontextualisation Theory to Understand Learning Across Multiple Sites in Simulation‐Based Nurse Education

open access: yesJournal of Advanced Nursing, EarlyView.
ABSTRACT Aim The aim of this discussion paper is to explore whether recontextualisation theory deepens our understanding of learning across multiple sites when introducing simulation‐based education (SBE) into nurse education. Background The requirement for students to learn in clinical placements remains an aspiration as well as a regulatory ...
Helen T. Allan, Mike O'Driscoll
wiley   +1 more source

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