Simon Fraser University

There are many algorithms for minimization when the objective function is differentiable or convex, but few options when it is neither. We describe two simple algorithmic approaches for minimization of nonsmooth, nonconvex objectives: BFGS (a new...

In today's product development and engineering process, usage of computer aided design (CAD) platform is an obvious choice. It allows creating of quite realistic models, precisely describing not only the geometry of the developed prototype, but also...

Wave propagation phenomena are present and explored in a variety of applications, ranging from medical imaging to radar detection. Those sophisticated applications require accurate modeling in order to optimize the involved procedures. For that...

Studies on bioremediation in a porous medium have mainly focused on wastewater treatment. The interest in these investigations has focused on optimising degradation rates and substrate loading. Pore clogging has not been studied thoroughly. When...

Many applications require the solution of time dependent partial differential equations (PDEs) on surfaces or more general manifolds. Methods for treating such problems include surface parameterization, methods on triangulated surfaces and embedding...

Intraguild predation (IGP) consists of two (or more) consumers of the same shared resource exhibiting a predator-prey relation among themselves, and is a very present phenomena in terrestrial, freshwater and marine ecological systems. Theoretical...