For a fixed density matrix it is natural to ask what class of ensembles $pi ,uc i&% gives rise to that density matrix? This problem was addressed by Schrödinger @3#, whose results have been extended by Jaynes @4#, and by Hughston, Jozsa, and Wootters @5#. The result of these investigations, the classification theorem for ensembles, has been of considerable utility in quantum statistical mechani...

We present a mixed-state space approach for modeling and segmenting human activities. The discrete-valued component of the mixed state represents higher-level behavior while the continuous state models the dynamics within behavioral segments. A basis of behaviors based on generic properties of motion trajectories is chosen to characterize segments of activities. A Viterbi-based algorithm to det...

We consider in this paper a general modelling for mixed-state data. Such data consist of two components of different types: the observations record many zeros, together with continuous real values. They occur in many application fields, like rainfall measures, or motion analysis from image sequences. The aim of this work is to present ad hoc spatio-temporal models for these kinds of data. We pr...

Mania and depression are seen as clinical syndromes of opposite polarities. It is known, according to the observations described by Kraepelin,1 that the association of manic or hypomanic symptoms with depressive ones is not infrequent, especially among patients who have BD conditions deemed severe. Besides, their treatment is more difficult due not only to the mixed symptomatology, but also to ...

This paper deals with a method to derive multiple models of saturated round rotor synchronous machines, based on different selections of statespace variables. By considering the machine currents and fluxes as space vectors, possible d–q models are discussed and adequately numbered. As a result several novel models are found and presented. It is shown that the total number of d–q models for a sy...

The amount of petroleum hydrocarbon and heavy metals in sediment of Persian Gulf’s shore at 8 selected stations were determined and showed the maximum of 143.6 and 58.6 mg/kg sediment, respectively. The above maximum amounts were related to Emam Hassan zone which is located at 50 kilometers to west Boushehr port. Bioremediation of contaminated sediment were studied in slurry and solid state fer...

We discuss the possibility of the “mixed state” in incommensurate charge density waves with threedimensional order. The mixed state is created by applying an electric field perpendicular to the chains. This state consists of topological dislocations induced by the external field and is therefore similar to the mixed states of superfluids (type-II superconductors or liquid helium II). However, t...