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A resource management framework for media applications modelled as dataflow streams is described. The framework is aimed at multi-core applications and the main resource managed is the CPU time. The management is implemented using reservation-based scheduling in combination with optimization and feedback. Experiences of applying the framework to media applications are reported. A simulation model

Friction is a subject of importance from many points of view. It controls the relative motion between two bodies in contact and most manufacturing methods based on engagement between a tool and a workpiece are dependent on the prevailing frictional conditions. The outcome in terms of part quality from manufacturing methods like sheet forming is directly connected to the frictional state. The aim

The importance of using efficient bases for current expansion in numerical computations of electromagnetic field problems has been emphasized for several decades. It is well known that the basis functions should approximate the physical current (electric or magnetic) to some extent. Moreover, for efficiency, it is reasonably to require that only a few basis functions are needed in order to obtain

This paper presents computationally efficient implementations for Iterative Adaptive Approach (IAA) spectral estimation techniques for uniformly sampled data sets. By exploiting the methods inherent low displacement rank, together with the development of suitable Gohberg-Semencul representations, and the use of data dependent trigonometric polynomials, the proposed implementations are shown to off

The well-known and commonly accepted finite dimensional model qualitatively describing surge instabilities in centrifugal (and axial) compressors is considered. The problem of global output feedback stabilization for it is solved. The solution relies on two new criteria for global stability proposed for a class of nonlinear systems exploiting quadratic constraints for infinite sector nonlinearitie

A constitutive theory is proposed, which possesses the possibilities of modelling all the important features or the behaviour or frictional materials such as: influence of all three stress invariants, coupling between deviatoric and volumetric response, dilatancy, softening, and different behaviour in loading and unloading. The basic constitutive assumptions are relations between properly defined

The national QA system in Sweden does not any longer include assessment of the institutions’ internal QA procedures. The Experts Group on Quality at the Swedish Association for Higher Education (SHUF) has proposed and tested how voluntary audits can be performed by the institutions in collaboration, coordinated by SUHF. The audits have quality enhancement as its sole purpose. The audit method focu