Results 71 to 80 of about 1,139,400 (279)
Hamiltonian reduction of Einstein’s equations without isometries
EPJ Web of Conferences, 2018 I apply the Hamiltonian reduction procedure to 4-dimensional spacetimes without isometries and find privileged spacetime coordinates in which the physical Hamiltonian is expressed in terms of the conformal two metric and its conjugate momentum.
Yoon Jong Hyuk
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Observable and Unobservable Mechanical Motion
Entropy, 2020 A thermodynamic approach to mechanical motion is presented, and it is shown that dissipation of energy is the key process through which mechanical motion becomes observable. By studying charged particles moving in conservative central force fields, it is
J. Gerhard Müller
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Nonlinear Vibration Analysis of the Composite Cable using Perturbation Method and the Green-Lagrangian Nonlinear Strain [PDF]
Mechanics of Advanced Composite Structures, 2019 In this study, nonlinear vibration of a composite cable is investigated by considering nonlinear stress-strain relations. The composite cable is composed of an aluminum wire as reinforcement and a rubber coating as matrix.
Rasoul Khodabakhsh, M. R. Dashtbayazi
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Physics‐Informed Neural Network‐Enabled Forward Prediction and Inverse Design of Ring Origami
Advanced Science, EarlyView.This work presents a KRT‐PINN framework that integrates Kirchhoff rod theory with physics‐informed neural networks for the forward prediction and inverse design of ring origami consisting of closed‐loop rods. The framework predicts stable states of segmented rings with prescribed natural‐curvature profiles and determines the natural‐curvature profiles ...
Luyuan Ning +3 more
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Attractors for a class of semi-linear degenerate parabolic equations [PDF]
, 2013 We consider degenerate parabolic equations of the form ∂tu = Δλu + f(u) u|∂Ω = 0, u|t=0 = u0 in a bounded domain Ω ⊂N, where Δλ is a subelliptic operator of the type (Formula presented.) We prove global existence of solutions and characterize their ...
Sonner, Stefanie +6 more
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Analytical and Experimental Vibration of Sandwich Beams Having Various Boundary Conditions
Shock and Vibration, 2018 Generalized differential quadrature (GDQ) method is used to analyze the vibration of sandwich beams with different boundary conditions. The equations of motion of the sandwich beam are derived using higher-order sandwich panel theory (HSAPT).
Eshagh F. Joubaneh +2 more
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Autonomous High‐Throughput Characterization of Liquid‐Liquid Phase Behavior
Advanced Science, EarlyView.This study introduces an automated dual modality platform, combining asymmetric capacitance deviation and multiangle turbidimetry, for high‐throughput characterization of liquid‐liquid phase behavior across chemically diverse fluid systems. The platform enables miscibility classification, resolution of phase separation kinetics and emulsion stability ...
Tarek Eid +3 more
wiley +1 more source
, 1941 This Hamilton's Drug Store menu includes sodas, fruit juices, soups, sandwiches, and salads. The menu also includes some information about the drug store. Hamilton's Drug Store grand opening was on a Tuesday morning, June 15, 1941. It was located on the
Hamilton's Drug Store
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Учёные записки Казанского университета: Серия Физико-математические науки, 2017 A numerical theory of lunar rotation has been developed. The mathematical model of the rotation of the Moon has been considered within the “main problem”. The equations of the rotation have been constructed on the basis of the Hamiltonian approach.
A.A. Zagidullin +4 more
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