Results 151 to 160 of about 13,240 (282)

How Long Is the Coast of Quantum Chemistry? Or, How to Evaluate Density Functional Theory as a Scientific Revolution

Natural Sciences, Volume 6, Issue 3, July 2026.
Within quantum chemistry, density functional theory (DFT) is a revolution. This serves as an example of a multitude of other scientific events, supporting the idea that revolutions are always large, if observed with the appropriate magnification. ABSTRACT Distinguishing scientific revolutions from normal science is a subjective, conflicting matter ...
Sebastian Kozuch
wiley   +1 more source

Blow up and analysis of the solutions for Cauchy problem associated with a nonlocal diffusion operator

, 2010
Nosotros estudiamos el Problema de Cauchy asociado a un Operador de Difusión No-Local. En primer lugar, se demuestra la existencia y unicidad, y la validez de un principio de comparación de soluciones de este problema.
Elorreaga Rodríguez, Luz Maricel
core  

A Dialogue on Revolutions and Revolutionaries in Science: A Perspective From Quantum Mechanics

Natural Sciences, Volume 6, Issue 3, July 2026.
ABSTRACT We discuss the notions of scientific revolutions and revolutionaries in the context of the Relativity Revolution and of the First, Second, and Third Quantum Revolutions. We conclude that at the core of the question of what qualifies as a revolution and revolutionary is an assessment of the gradients of knowledge accumulation over time, both at
Ron Folman, Bretislav Friedrich
wiley   +1 more source

Stability of a Fully Discrete Local Discontinuous Galerkin Method for the Generalized Benjamin–Ono Equation

Numerical Methods for Partial Differential Equations, Volume 42, Issue 4, July 2026.
ABSTRACT The main purpose of this paper is to design a fully discrete local discontinuous Galerkin (LDG) scheme for the generalized Benjamin–Ono equation. First, we prove the L2$$ {L}^2 $$‐stability for the proposed semi‐discrete LDG scheme and obtained a suboptimal order of convergence for power nonlinear flux.
Mukul Dwivedi, Tanmay Sarkar
wiley   +1 more source

Existence of solutions for an n-dimensional operator equation and applications to BVPs

Electronic Journal of Differential Equations, 2014
By applying the Guo-Lakshmikantham fixed point theorem on high dimensional cones, sufficient conditions are given to guarantee the existence of positive solutions of a system of equations of the form $$ x_i(t)=\sum_{k=1}^n\sum_{j=1}^n\gamma_{ij}(t ...
George L. Karakostas
doaj  

Analysis of solutions of Neumann problem associated to a nonlocal diffusion equation with absorption term

, 2010
Estudiamos las soluciones de un problema de Neumann asociado a una ecuación de difusión no local con término de absorción, probamos existencia y unicidad, y un principio de comparación.
Mora Salinas, Claudia Patricia
core  

An Energy‐Corrected Fast Post‐SCF Local‐Hybrid Scheme for Highly Accurate Energy Differences of Large Main‐Group Systems

Journal of Computational Chemistry, Volume 47, Issue 17, 30 June 2026.
A post‐SCF energy‐corrected local‐hybrid scheme, EC(LH)@(m)GGA, is introduced, in which hyper‐meta‐GGA ingredients obtained from inexpensive meta‐GGA or GGA orbitals are used as input for a single local‐hybrid energy evaluation. Using LH25nP as a prototype, this strategy retains the characteristic accuracy and strong‐correlation improvement of the ...
Artur Wodyński, Martin Kaupp
wiley   +1 more source

Global and local minimizers of a doubly nonlocal variational problem

, 2019
Consider the problem of minimizing the doubly nonlocal energywhich is a doublewell potential. This doubly nonlocal energy arises in the study of microphase separation phenomena for diblock copolymers with nonlocal diffusions and long range ...
Masomeh, Jamshid Nejad
core  

A Molecular “Thermometer” for Measuring Effective Non‐Local Exchange

Journal of Computational Chemistry, Volume 47, Issue 17, 30 June 2026.
The isomerization of hexaethynylbenzene to carbo‐benzene acts as a sensitive “thermometer” for the effective treatment of non‐local exchange effects in density functional, semiempirical, and machine‐learning methods. ABSTRACT Non‐local exchange (NLX) is a key ingredient for accurate density functional calculations, but its effective strength is often ...
Stefan Grimme, Marcel Müller, Thomas Froitzheim, Andreas Hansen   +3 more
wiley   +1 more source

Strong Mode Coupling and Maximum Directional Absorption in Reciprocal Bianisotropic Metasurfaces

Nanophotonics, Volume 15, Issue 12, 25 June 2026.
Symmetry breaking in q‐BIC dielectric metasurfaces enables strong electromagnetic coupling between electric and magnetic modes, leading to their hybridization and Rabi‐like splitting. This mechanism produces pronounced reciprocal bianisotropy and dual‐band asymmetric absorption under opposite illumination directions, offering a compact framework for ...
L. M. Máñez‐Espina, B. Amrahi, V. S. Asadchy, A. Díaz‐Rubio   +3 more
wiley   +1 more source