Results 91 to 100 of about 663,640 (272)
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose Due to the tight curvature in their design, ring applicators are usually associated with large positioning errors. The standard practice to correct for these deviations based on global offsets may not be sufficient to comply with the recommended tolerance.
Leon G. Aldrovandi +3 more
wiley +1 more source
Note on a role for entire functions of the classes P and P*
International Journal of Mathematics and Mathematical Sciences, 1981 We use the B and B* operators of Levin on the Classes P and P* and a comparison principle to prove a Gauss-Lucas Theorem for differential operators. The connection with the determination of final sets for differential operators is then clarified.
C. L. Prather
doaj +1 more source
A strong comparison principle for positive solutions of degenerate elliptic equations [PDF]
, 2000 Mabel Cuesta, Peter Takáč
openalex +1 more source
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Purpose This study evaluates the dosimetric and geometric precision of a virtual cone technique using CBCT‐based polymer gel dosimetry, enabling radiation delivery, and imaging readout within an identical spatial coordinate system. Methods We created a C# script for a virtual cone technique that generates a treatment plan with 10 gantry arcs ...
Tenzin Kunkyab +6 more
wiley +1 more source
Boundary differentiability for inhomogeneous infinity Laplace equations
Electronic Journal of Differential Equations, 2014 We study the boundary regularity of the solutions to inhomogeneous infinity Laplace equations. We prove that if $u\in C(\bar{\Omega})$ is a viscosity solution to $\Delta_{\infty}u:=\sum_{i,j=1}^n u_{x_i}u_{x_j}u_{x_ix_j}=f$ with $f\in C(\Omega)\cap L^
Guanghao Hong
doaj
Comparison of two variants of the Fick principle for estimation of mammary blood flow in dairy cows fed two levels of dry matter intake [PDF]
, 2001 D. Pacheco +2 more
openalex +1 more source
Journal of Applied Clinical Medical Physics, EarlyView.Abstract Background Dual‐energy cone‐beam CT (DE‐CBCT) has become subject of recent interest due to the ability to produce virtual monoenergetic images (VMIs) with improved soft‐tissue contrast and reduced nonuniformity artifacts. However, efficient production and optimization of VMIs remains an under‐explored part of DE‐CBCT's application.
Andrew Keeler +4 more
wiley +1 more source
Comparison principle for a nonlinear parabolic problem of a nonmonotone type [PDF]
, 2002 Tomáš Vejchodský
openalex +1 more source
Electronic Journal of Differential Equations, 2013 The purpose of this paper is to study traveling wave fronts of a two-dimensional (2D) lattice delayed differential equation with global interaction. Applying the comparison principle combined with the technical weighted-energy method, we prove that ...
Shi-Liang Wu, Tian-Tian Liu
doaj
Comparison Principles for subelliptic equations of Monge-Ampere type [PDF]
arXiv, 2008 We present two comparison principles for viscosity sub- and supersolutions of Monge-Ampere-type equations associated to a family of vector fields. In particular, we obtain the uniqueness of a viscosity solution to the Dirichlet problem for the equation of prescribed horizontal Gauss curvature in a Carnot group.
arxiv