Results 51 to 60 of about 16,809 (204)
Eikonal equation of the Lorentz-violating Maxwell theory
, 2010 We derive the eikonal equation of light wavefront in the presence of Lorentz invariance violation (LIV) from the photon sector of the standard model extension (SME).
Ma, Bo-Qiang, Shao, Lijing, Xiao, Zhi
core +1 more source
Wave Tracing: Generalizing The Path Integral To Wave Optics
Computer Graphics Forum, EarlyView.Abstract Modeling the wave nature of light and the propagation and diffraction of electromagnetic fields is crucial for the accurate simulation of many phenomena, yet wave simulations are significantly more computationally complex than classical ray‐based models.
Shlomi Steinberg, Matt Pharr
wiley +1 more source
Eikonal equations on ramified spaces
Interfaces and Free Boundaries, Mathematical Analysis, Computation and Applications, 2013 We generalize the results in [23] to higher dimensional ramified spaces. For this purpose we introduce ramified manifolds and, as special cases, locally elementary polygonal ramified spaces (LEP spaces). On LEP spaces we develop a theory of viscosity solutions for Hamilton–Jacobi equations, providing existence and uniqueness results.
Fabio Camilli +2 more
openaire +4 more sources
A Social Force Model for Pedestrians’ Movements Affected by Smoke Spreading
Modelling and Simulation in Engineering, 2020 A social force (SF) model is proposed to simulate the egress of pedestrians while smoke is spreading. The advection-diffusion with source term is used to describe the propagation of smoke. It is incorporated into the SF model. The navigation field in our
J. Makmul
doaj +1 more source
An eikonal equation based path planning method using polygon decomposition and curve evolution
Defence Technology, 2020 Path planning is a key technique of autonomous navigation for robots, and the velocity field is an important part. Constructing velocity field in a complex workspace is still challenging.
Zheng Sun, Zhu-Feng Shao, Hui Li
doaj +1 more source
Eikonal Approximation to 5D Wave Equations as Geodesic Motion in a Curved 4D Spacetime
, 2002 We first derive the relation between the eikonal approximation to the Maxwell wave equations in an inhomogeneous anisotropic medium and geodesic motion in a three dimensional Riemannian manifold using a method which identifies the symplectic structure of
A.O. Barut +17 more
core +4 more sources
Mesh Processing Non‐Meshes via Neural Displacement Fields
Computer Graphics Forum, EarlyView.Abstract Mesh processing pipelines are mature, but adapting them to newer non‐mesh surface representations—which enable fast rendering with compact file size—requires costly meshing or transmitting bulky meshes, negating their core benefits for streaming applications.
Yuta Noma +4 more
wiley +1 more source
Modelling and Simulation in Engineering, 2020 A cellular automaton (CA) model is proposed to simulate the egress of pedestrians while gaseous hazardous material is spreading. The advection-diffusion with source term is used to describe the propagation of gaseous hazardous material.
J. Makmul
doaj +1 more source
Breakup reaction models for two- and three-cluster projectiles
, 2010 Breakup reactions are one of the main tools for the study of exotic nuclei, and in particular of their continuum. In order to get valuable information from measurements, a precise reaction model coupled to a fair description of the projectile is needed ...
A. Cobis +124 more
core +1 more source
Macroscopic modeling and simulations of room evacuation [PDF]
, 2013 We analyze numerically two macroscopic models of crowd dynamics: the classical Hughes model and the second order model being an extension to pedestrian motion of the Payne-Whitham vehicular traffic model.
Duvigneau, Regis +2 more
core +4 more sources