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On H-infinity Control and Large-Scale Systems

In this thesis, a class of linear time-invariant systems is identified for which a particular type of H-infinity optimal control problem can be solved explicitly. It follows that the synthesized controller can be given on a simple explicit form. More specifically, the controller can be written in terms of the matrices of the system’s state-space representation. The result has applications in the c

QED interconnection effects on $W$ momentum distributions at LEP-2

The process ${⤪ e}^{+}{⤪ e}^{-}⌝ghtarrow {⤪ W}^{+}{⤪ W}^{-}⌝ghtarrow {⤪ f}_{1}{⩈erline {⤪ f}}_{2}{⤪ f}_{3}{⩈erline {⤪ f}}_{4}$ contains charges in the initial, intermediate and final stages. This gives a rich selection of possible QED interconnection effects. Coulomb interaction is the simplest of these, and can thus be used to explore consequences. We study a number of experimental observables, w