Sökresultat

This paper presents a readily computable formula for the real stability radius with respect to an arbitrary stability region in the complex plane.

This chapter proposes an onomasiological research methodology forcross-linguistic investigations of antonyms. The basic assumption is that thereis a number of strongly opposable lexical semantic pairings in all languages,whose meanings are central to human existence, e.g. speed slow–fast, luminosity, dark–light, strength weak–strong, size small–large. There is also a large number of other pairings

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

For at least a decade, no new drug principles have been added to the therapeutic armamentarium for the treatment of lower urinary tract symptoms (LUTS) associated with or suggestive of benign prostatic hyperplasia (BPH). Theoretically, there seem to be several possibilities to improve the current treatment, which is based mainly on alpha1-adrenoceptor (AR) antagonists, 5alpha-reductase inhibitors

Electric road systems (ERS) allows electric vehicles to charge while in motion, in turn possibly reducing the cost of the vehicle since the battery capacity can be reduced. Most conductive ERS seen today are DC and while static charging is possible from an ERS it is also often beneficial if the vehicle is able to charge from the AC grid as well. In this paper an electric powertrain with the chargi

In the Full-Scale Optimization approach the complete empirical financial return probability distribution is considered; and the utility maximizing solution is found through numerical optimization. Using a portfolio choice setting of three UK equity indices we identify several utility functions featuring loss aversion and prospect theory; under which Full-Scale Optimization is a substantially bette

The aerobic biodegradation of toxic organic volatile contaminants is always limited by the low aqueous solubility of O2. Therefore, intensive bubbling or surface aeration is required to supply the bacterial community with sufficient O2 to carry out pollutant mineralization. This can cause the hazardous volatilization of toxic volatile contaminants. Photosynthetic oxygenation overcomes these limita