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DIRECT is a sample-based global optimisation method for Lipschitz continuous functions defined over compact multidimensional domains. This paper adapts the DIRECT method with a modified termination criterion for global extremum seeking control of multivariable dynamical plants. Finite-time semi-global practical convergence is established based on a periodic sampled-data control law, whose sampling
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By examining all emission lines of Fe II in high resolution satellite spectra of the symbiotic star RR Tel we have made a systematic study of fluorescence lines in the ultraviolet wavelength region 1200-3000 Å. We list 33 energy levels of Fe II that are selectively excited in the stellar system by photons from strong lines of H, He II, Si III, O III, C IV, O V, Ne V, and O VI. All energy levels li
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Vilken roll spelar de arbetslösa sjukskrivna? Är de arbetslösa, arbetssökande eller sjuka? I uppsatsen diskuteras rollsociologi, arbetslöshet och sjukskrivning, samt vilken roll arbetslösa sjukskrivna identifierar sig med.