Turbochargers are most widely used in automotive, marine and locomotive applications with diesel engines. To increase the engine performance nowadays, in aerospace applications also turbochargers are used. Mostly the turbocharger rotors are commonly supported over the fluid film bearings. With the operation, lubricant properties continuously alter leading to different load bearing capacities. T...

Models for the evolution of the Moon must explain a number of important characteristics of its magmatic history. Primary among them is the emplacement of mare basalts primarily on one side of the Moon, and in a region of the surface roughly correlating with that containing high subsurface concentrations of KREEP. It is thus important to explore mechanisms which will regionally concentrate a KRE...

When a hypersurface (t) evolves with normal velocity equal to its mean curvature plus a forcing term g(x; t); the generalized (viscosity) solution may be \fattened" at some moment when (t) is singular. This phenomenon corresponds to nonuniqueness of codimension-one solutions. A speciic type of geometric singularity occurs if (t) includes two smooth pieces, at the moment t = 0 when the two piece...

A deterministic infinite-horizon singular control problem with unbounded control set is solved completely. The methods used here are those of dynamic programming and viscosity solutions. The novelty is that the value function is convex, C along a piece of the free boundary and not C along another piece of it.

Although the addition of 2nd and 4th order artiicial viscosity terms to cell vertex discretisations is standard practice, it is widely recognised that there is a lack of understanding of their exact function. This report explores the need for, and the function of, both 2nd and 4th order artiicial viscosity models, and presents improved designs.

Abstract We present a high order, robust, and stable shock-capturing technique for finite element approximations of ideal MHD. The method uses continuous Lagrange polynomials in space explicit Runge-Kutta schemes time. term is based on the residual MHD which tracks shock discontinuity positions, adds sufficient amount viscosity to stabilize them. tested up third order polynomial spaces an expec...

Classical model–based fault detection schemes for linear multivariable systems require the definition of suitable residual functions. This paper shows the possibility of identifying residual generators even when the system model is unknown, by following a black–box approach. The result is obtained by using canonical input–output polynomial forms which lead to characterise in a straightforward f...

A number of reinforcement learning algorithms have been developed that are guaranteed to converge to the optimal solution when used with lookup tables. It is shown, however, that these algorithms can easily become unstable when implemented directly with a general function-approximation system, such as a sigmoidal multilayer perceptron, a radial-basisfunction system, a memory-based learning syst...

BACKGROUND The property values of therapeutic gas mixtures are important in designing devices, defining delivery parameters, and in understanding the therapeutic effects. In the medical related literature the vast majority of articles related to gas mixtures report property values only for the pure substances or estimates based on concentration weighted averages. However, if the molecular size ...