The entanglement of Dirac fields has been shown to decrease with increasing acceleration when a quantum state is shared between an inertial and uniformly accelerated observer. A new form entangled vacuum observed by the observer postulated in which it assumed that present modes field sharp opposite momenta defined two causally disconnected regions space-time. We find this assumption does not af...

Abstract The many recent crises in Belarus are often seen through the prism of democratization, post-communist transition, and nation- identity-building. As a rule, it is put into context 1989 democratization Central Eastern Europe compared with similar societal mobilization Georgia (2003), Ukraine (2004; 2014), Kyrgyzstan (2005). This article, however, argues that while these theoretical appro...

Observers or state estimators are devices applied to approximate unknown parameters that are due to uncertain parameters, noise, disturbances and mismatch. It is important to identify those variables prior to construct a control system and avoid fault or process disruption. In certain chemical processes, such observer usage produced unsatisfactory results therefore hybrid approached is the best...