Results 141 to 150 of about 735 (173)

Nordgren PINNs to VQE: Advancing Hydraulic Fracturing Simulations in Shale Reservoirs

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT This study advances hydraulic fracturing simulations in shale reservoirs using two computational paradigms, Physics‐Informed Neural Networks (PINNs) and the Variational Quantum Eigensolver (VQE). PINNs were employed to solve Nordgren's equation, which governs fracture width evolution, by embedding physical laws into the neural network ...
Dennis Delali Kwesi Wayo   +7 more
wiley   +1 more source

A Geometrically Regularized Gradient‐Damage Model With Orthogonality‐Based Energy Split for Dynamic Anisotropic Compression‐Shear Fracture

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, EarlyView.
ABSTRACT This study proposes a novel geometrically regularized gradient‐damage model for simulating dynamic mixed‐mode fracture in orthotropic materials with tension–compression asymmetry. In this model, a thermodynamic framework is formulated by incorporating damage dissipation into internal energy evolution, from which the constitutive relation and ...
Hui Li, Shanyong Wang
wiley   +1 more source

From Connections to Actions: When Do Government Ties Matter to Nonprofit Organizational Performance?

open access: yesPublic Administration and Development, EarlyView.
ABSTRACT Nonprofit organizations are essential for public service delivery, yet the value of their government ties is contested. This study examines the mechanism that translates these connections into tangible results. We propose that political networking—the deliberate cultivation and use of official relationships—is the critical catalyst.
Qiang Dong, Jiahuan Lu, Shanshan Guan
wiley   +1 more source

Quantum Elastica. [PDF]

open access: yesEntropy (Basel)
Geiger D, Werman M.
europepmc   +1 more source

Determining the N-Representability of a Reduced Density Matrix via Unitary Evolution and Stochastic Sampling. [PDF]

open access: yesJ Chem Theory Comput
Massaccesi GE   +8 more
europepmc   +1 more source

The phase diagram of quantum chromodynamics in one dimension on a quantum computer. [PDF]

open access: yesNat Commun
Than AT   +10 more
europepmc   +1 more source

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