Results 81 to 90 of about 1,510 (211)

First-principles many-electron dynamics using the B-spline algebraic diagrammatic construction approach [PDF]

, 2018
In this chapter we present a first-principles theoretical and numerical method based on the many-electron algebraic diagrammatic construction [ADC(n)] schemes for electronic excitations, able to describe the correlated multi-electron ionisation dynamics ...
Averbukh, Vitali, Ruberti, Marco
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Synthesis, Structure, and Thin Film Optical Properties of a Chiral Benzothiazole‐Derived Squaraine

ChemPhysChem, Volume 27, Issue 7, 14 April 2026.
Solution‐processed thin films can be sensitive to the choice of solvent and thermal annealing, which we explore for a chiral benzothiazole squaraine. We observe peculiarly shaped excitonic circular dichroism in uniaxially anisotropic thin films, in which the presumed Davydov bands are spatially distributed exclusively into in‐plane (UDC) and out‐of ...
Marvin F. Schumacher, Gregor Schnakenburg, N. Serdar Sariciftci, Arne Lützen, Manuela Schiek   +4 more
wiley   +1 more source

One point quadrature rule with cardinal B-spline

, 2009
To compute approximately an integral(1)∫0mφm(x)f(x)dx, where φm(⋅) is cardinal B-spline, we used composite rectangular rule. We proved that, on the “quasi uniform” mesh, the used formula has, conditionally speaking, algebraic degree of exactness m−1 ...
Udovičić, Zlatko
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Optimized Parallel Reduction for Regular and Irregular Segments on GPU

Concurrency and Computation: Practice and Experience, Volume 38, Issue 8, April 2026.
ABSTRACT Reduction is an operation that combines all the elements of a collection by applying a binary operation, such as sum, maximum, or minimum, to all the elements to obtain a single resulting value. This paper investigates implementation strategies for both segmented and non‐segmented reduction on GPUs.
Michel B. Cordeiro, Wagner M. Nunan Zola
wiley   +1 more source

SEMI-ORTHOGONAL SPLINE SCALING FUNCTIONS FOR SOLVING HAMMERSTEIN INTEGRAL EQUATIONS

, 2011
We developed a new numerical procedure based on the quadratic semi-orthogonal B-spline scaling functions for solving a class of nonlinear integral equations of the Hammerstein-type.
J. RASHIDINIA, ALI PARSA
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Numerical Solutions for the Eighth-Order Initial and Boundary Value Problems Using the Second Kind Chebyshev Wavelets

Advances in Mathematical Physics, 2015
A collocation method based on the second kind Chebyshev wavelets is proposed for the numerical solution of eighth-order two-point boundary value problems (BVPs) and initial value problems (IVPs) in ordinary differential equations.
Xiaoyong Xu, Fengying Zhou
doaj   +1 more source

Quasi-Spline Sheaves and their Contact Ideals [PDF]

, 2016
We research quasi-spline sheaves, which are an algebraic geometric generalization of spline spaces. Spline spaces are vector spaces of splines that are defined over some polyhedral complex in real space, and the dimension and basis for them are of ...
Hayes, Timothy
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The geometric shape of a fourth-order NUAT-B spline curve(4阶NUAT-B样条曲线的几何形状)

Zhejiang Daxue xuebao. Lixue ban
To investigate the relationship between spline representation and geometric representation, the geometric shape of the 4th-order non-uniform algebraic triangular B spline (NUAT-B spline) is exploited.
CHEN Haiwei(陈海伟), SHEN Wanqiang(沈莞蔷), HU Qingyuan(胡清元)   +2 more
doaj   +1 more source

Finite element solutions to boundary value problems

, 1976
This thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.This thesis consists of two distinct parts which deal with two-point boundary value problems and parabolic problems, respectively.
Moore, P
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