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We obtain spectral conditions that characterize mild well-posed inhomogeneous differential equations in a general Banach space X. L p periodic solutions of first and second-order equations are considered. The results are expressed in terms of operator-valued Fourier multipliers. Our approach prov...

In this paper we present a model reference adaptive control scheme for plants with unity relative degree. The novelty of this approach is that the model reference need not be strictly real positive and the method uses the theory of observers with unknown inputs. Eventhough the analysis starts ver...

Intracellular information transfer is basic to virtually every biological process, therefore it is of great value to understand and appreciate the complexities and the diversity of modes of signalling. Studies of biochemical events underlying phototransduction, the process in photoreceptor cells ...