in this paper, distributed parameter process systems behavior is studied in frequency domain. based on the dominant gain concept that is developed for such studies, a method is presented to control distributed parameter process systems. by using dominant gain concept, the location of open loop zeros, resulted from the time delay parameter in the process model, were changed from the right half p...

We study the stationary state of a simple exclusion process on a ring which was recently introduced by Arndt et al [14,15]. This model exhibits spatial condensation of particles. It has been argued [14, 15] that the model has a phase transition from a “mixed phase” to a “disordered phase”. However, in this paper exact calculations are presented which, we believe, show that in the framework of a...

Right-half-plain (RHP) zeros can significantly deteriorate a control system's dynamic performances as it exhibits non-minimum-phase behaviors. In this paper, we investigate the occurrence mechanism of RHP in weak-grid-tied VSCs well provide guidance for minimizing their effects. A reduced-order multi-input multi-output (MIMO) transfer function VSC is firstly obtained. Then, single-input single-...

We give a necessary and sufficient condition for a function E(t) being of minimum phase, and hence for its phase being univocally determined by its intensity |E(t)|. This condition is based on the knowledge of E(t) alone and not of its analytic continuation in the complex plane, thus greatly simplifying its practical applicability. We apply these results to find the class of all band-limited si...

The cosmological QCD phase transition is studied in terms of the color confinement at finite temperature using the dual Higgs theory of QCD. The confinement force is largely reduced at high temperature, which leads to the swelling of hadrons. We derive analytical formulae for the surface tension and the boundary thickness of the mixed phase from the effective potential at Tc. We predict a large...

The well-known prediction-error-based maximum likelihood (PEML) method can only handle minimum phase ARMA models. This likelihood (BFML) method, which can handle nonminimum phase and noncausal ARMA models. The BFML method is identical to the PEML method in the case of a minimum phase ARMA model, and it turns out that the BFML method incorporates a noncausal ARMA filter with poles outside the un...