Results 91 to 100 of about 19,216 (267)
Modeling proppant transport and settling in a 3D propagating fracture
Deep Underground Science and Engineering, EarlyView.A versatile multiphysics tool is presented for simulating the complex processes involved in hydraulic fracturing treatments. The model couples fracture opening and propagation, variable‐density slurry flow, and proppant particle transport within the multiphysics object‐oriented simulation environment framework, based on two‐phase mixture equations and ...
Robert Egert +2 more
wiley +1 more source
Two-Step Fifth-Order Efficient Jacobian-Free Iterative Method for Solving Nonlinear Systems
MathematicsThis article introduces a novel two-step fifth-order Jacobian-free iterative method aimed at efficiently solving systems of nonlinear equations. The method leverages the benefits of Jacobian-free approaches, utilizing divided differences to circumvent ...
Alicia Cordero +3 more
doaj +1 more source
On the Robot Singularity: A Novel Geometric Approach
International Journal of Advanced Robotic Systems, 2012 This paper addresses a novel geometric analysis method of the singularity and kinestatic characteristics of robots. For non-redundant robots, there exist two uniquely determined Jacobians – the screw-based Jacobian and the reciprocal Jacobian.
Man Bok Hong
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Generative Models in Inorganic Crystals Discovery and Inverse Design
ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.Generative inverse‐design samples from the vast inorganic crystal design space by starting from target properties such as band gap, stability, and ion transport. This Review examines the representations, generative models, and validation workflows needed to translate candidate structures into stable, potentially synthesizable materials for applications
Tao Li +5 more
wiley +1 more source
On generalized Jacobians [PDF]
Transactions of the American Mathematical Society, 1950 Rado, T., Reichelderfer, P. V.
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Journal of Magnetic Resonance Imaging, EarlyView.ABSTRACT Background Brain development is altered in neonates with congenital heart disease (CHD), with well‐characterised reductions in regional brain volumes and enlargement of CSF spaces. However, perioperative morphological changes remain incompletely understood. Purpose To identify brain regions showing spatial patterns of coordinated expansion and
Mirthe E. M. van der Meijden +14 more
wiley +1 more source
The Jacobian conjecture for symmetric Jacobian matrices
, 2003 12 p.
Essen, A.R.P. van den, Washburn, S.
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Remarks on the Jacobian Conjecture
Journal of Algebra, 1997 Let \(F=(F_1,\dots,F_n),\;F_i\in\mathbb C[X_1,\dots,X_n] \) and \(\text{Jac}(F)\in\mathbb C^*\). Let \(M_i=m_{i0}(Y)+m_{i1}(Y)T+ \dots +m_{id_i}(Y)T^{d_i}_i \in \mathbb C[Y_1,\dots,Y_n,T] \) be the minimal polynomial of the algebraic dependence of \(F_1,\dots,F_n,X_i\) over \(\mathbb C\), i.e. the non-zero minimal irreducible polynomial such that \(M_i(
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Journal of Raman Spectroscopy, EarlyView.Raman spectra containing D/G features are fit using combinations of basis functions and initial conditions. Fits with two Lorentzian functions converged to a single optimized fit even with variation of initial peak positions. For five‐band fits, sometimes the final fit varied with initial conditions, and constraints on peak center position were ...
David C. Doughty, Steven C. Hill
wiley +1 more source