An approach for eigenvalue assignment in linear descriptor systems via output feedback is proposed. Sufficient conditions in order that a given set of eigenvalues is assignable are established. Parametric form of the desired output feedback gain matrix is also given. The approach assigns the full number of generalised eigenvalues, guarantees the closed-loop regularity and overcomes the defects ...

We show that smooth global (or even semi-global) stabilizability and uniform complete observability are su cient properties to guarantee semi-global stabilizability by dynamic output feedback for continuous-time nonlinear systems.

Introduction In a world that is rapidly moving towards faster, higher quality production of products, the focus has been on manufacturers that produce products in a repetitive or process mode of operation. The good news is that progress has been tremendous in those companies. The bad news is that in the job shops of the world, it is virtually business as usual. Manufacturing in the United State...

Robust output-feedback simplified adaptive control model following with uncertainties and disturbances is considered. Sufficient conditions for closed-loop stability, model following performance and prescribed H∞ disturbance attenuation level are introduced, under an almost-strictlypositive-realness requirement on the plant. A numerical example, taken from the field of flight control, demonstra...

With chosen-IV chosen texts, David Wagner has analyzed the multiple modes of operation proposed by Eli Biham in FSE’98. However, his method is too unrealistic. We use only known-IV chosen texts to attack many triple modes of operation which are combined with cascade operations. 123 triple modes are analyzed with complexities less than E. Biham’s results. Our work shows that the securities of ma...

A long-standing proposal for modifying cipher block chaining to prevent data expansion is shown to be insecure in some circumstances. Different modifications are then presented which appear secure.

Previous studies have been conducted by employing various methods to reduce the condenser water temperature, a crucial control variable consider when attempting improve operational efficiency of chiller. The existing literature dealing with effects low-condenser temperatures is limited, as cooling flow rate often considered operating loop. However, produce additional low temperatures, approach ...

Robust output-feedback simplified adaptive control model following is considered for discrete-time systems with uncertainties and disturbances. Sufficient conditions for closed-loop stability, model following performance and prescribed H∞ disturbance attenuation level are introduced, under an almost-strictly-positive-realness requirement on the plant. A numerical example, taken from the field o...