In this paper we use the analogy of Parrondo's games to design a second order switched mode circuit which is unstable in either mode but is stable when switched. We do not require any sophisticated control law. The circuit is stable, even if it is switched at random. We use a stochastic form of Lyapunov's second method to prove that the randomly switched system is stable with probability of one...

Go slow" dialysis is a gentle, intermittent hemodialysis therapy for acute renal failure patients, with advantages compared to slow, continuous therapies. It employs a recirculating closed dialysate circuit. A two-pool urea kinetic model is elaborated to determine kinetic parameters from blood and dialysate concentrations. This will allow quantification of the therapy. Variable clearance is inc...

Introduction Prediction of Device Temperatures with Depth-Averaged Models of the Flow Field over Printed Circuit Boards Convective heat transfer from electronic devices mounted on a printed circuit board is simulated with an efficient Computational Fluid Dynamics (CFD) model. The computer time necessary to calculate a solution to the flow field is greatly reduced by solving the depthaveraged (D...

Abstract. Eastern boundary upwelling systems (EBUSs) are physically and biologically active regions of the ocean with substantial impacts on biogeochemistry, ecology, global fish catch. Previous studies have used models varying complexity to study EBUS dynamics, ranging from minimal two-dimensional (2-D) comprehensive regional models. An advantage 2-D is that they more computationally efficient...

We propose an efficient model for the description of three-dimensional (3-D) evolution breaking water waves in nearshore region. A fundamental property is its intrinsic ability to account 3-D dynamics vorticity and energy dissipation induced by wave breaking. In particular, achieved through use mollified operators, approach similar spirit that adopted smoothed particle hydrodynamics. Further, s...