Results 31 to 40 of about 66,795 (159)
Quadrature Integration Techniques for Random Hyperbolic PDE Problems
Mathematics, 2021 In this paper, we consider random hyperbolic partial differential equation (PDE) problems following the mean square approach and Laplace transform technique. Randomness requires not only the computation of the approximating stochastic processes, but also
Rafael Company +2 more
doaj +1 more source
Inversion of the Laplace transform from the real axis using an adaptive iterative method [PDF]
, 2009 In this paper a new method for inverting the Laplace transform from the real axis is formulated. This method is based on a quadrature formula. We assume that the unknown function $f(t)$ is continuous with (known) compact support.
Indratno, Sapto W., Ramm, A. G.
core +8 more sources
Generalized Averaged Gauss Quadrature Rules: A Survey
MathematicsConsider the problem of approximating an integral of a real-valued integrand on a real interval by a Gauss quadrature rule. The classical approach to estimate the quadrature error of a Gauss rule is to evaluate an associated Gauss–Kronrod rule and ...
Dušan L. Djukić +3 more
doaj +1 more source
ERROR BOUNDS FOR SURFACE AREA ESTIMATORS BASED ON CROFTON’S FORMULA
Image Analysis and Stereology, 2011 According to Crofton's formula, the surface area S(A) of a sufficiently regular compact set A in Rd is proportional to the mean of all total projections pA (u) on a linear hyperplane with normal u, uniformly averaged over all unit vectors u.
Markus Kiderlen, Daniel Meschenmoser
doaj +1 more source
Interpolatory Quadrature Rules for Oscillatory Integrals [PDF]
Journal of Scientific Computing, 2012 In this paper we revisit some quadrature methods for highly oscillatory integrals of the form $\int_{-1}^1f(x)e^{{\rm i} x}dx, >0$. Exponentially Fitted (EF) rules depend on frequency dependent nodes which start off at the Gauss-Legendre nodes when the frequency is zero and end up at the endpoints of the integral when the frequency tends to ...
Ledoux, Veerle, Van Daele, Marnix
openaire +2 more sources
Graphical rule of transforming continuous-variable graph states by local homodyne detection
, 2010 Graphical rule, describing that any single-mode homodyne detection turns a given continuous-variable (CV) graph state into a new one, is presented. Employing two simple graphical rules: local complement operation and vertex deletion (single quadrature ...
Zhang, Jing
core +1 more source
Generation and application of multivariate polynomial quadrature rules
, 2017 The search for multivariate quadrature rules of minimal size with a specified polynomial accuracy has been the topic of many years of research. Finding such a rule allows accurate integration of moments, which play a central role in many aspects of ...
Jakeman, John D., Narayan, Akil
core +1 more source
A Gauss-Jacobi Kernel Compression Scheme for Fractional Differential Equations
, 2018 A scheme for approximating the kernel $w$ of the fractional $\alpha$-integral by a linear combination of exponentials is proposed and studied.
Baffet, Daniel
core +1 more source
Quadrature Kalman filter–based state of charge estimation for lithium-ion battery
Advances in Mechanical Engineering, 2020 This article presents an approach to lithium-ion battery state of charge estimation based on the quadrature Kalman filter. Among the existing state of charge estimation approaches, the extended Kalman filter–based state of charge and unscented filter ...
Mengtao Huang +4 more
doaj +1 more source
Demographic Research, 2023 Background: Previous research has derived bounds on the remaining life expectancy function e(x) that connect survivorship and remaining life expectancy at two age values and therefore can be used to, among other things, estimate life expectancy at birth ...
Oscar Fernandez
doaj +1 more source