An important aspect of successfully analyzing data with blind source separation is to know the indeterminacies of the problem, that is how the separating model is related to the original mixing model. If linear independent component analysis (ICA) is used, it is well known that the mixing matrix can be found in principle, but for more general settings not many results exist. In this work, only ...

Coherent population trapping is shown to occur in a driven symmetric double-well potential in the strong-field regime. The system parameters have been chosen to reproduce the 0(-) <--> 3(+) transition of the inversion mode of the ammonia molecule. For a molecule initially prepared in its lower doublet we find that, under certain circumstances, the 3(+) level remains unpopulated, and this occurs...

We propose analytic model of the delay of the Slotted ALOHA protocol with Binary Exponential Backoff (BEB) as a collision resolution algorithm in mobile multimedia networks. We verify the proposed analytic model using the computer simulation. In numerical results, our proposed method show correct analytic model and has better performance results than previous methods in mobile multimedia networks.

A simple model of the dynamics of flaws within a software security system is presented. We demonstrate how this model can be fully captured by a Galton-Watson branching process and thus can be effectively calculated upon. Using the limit behaviour of a Galton-Watson branching process, we can demonstrate how a multi-layered security system can become secure even with ’poor’ flaw correction. Fina...

We observe that the exactly solved eight-vertex solid-on-solid model contains an hitherto unnoticed arbitrary field parameter, similar to the horizontal field in the six-vertex model. The parameter is required to describe a continuous spectrum of the unrestricted solid-onsolid model, which has an infinite-dimensional space of states even for a finite lattice. The introduction of the continuous ...

This paper investigates the analytic performance of IEEE 802.11e enhanced distributed channel access (EDCA) under saturated traffic load. Compared with the existing analytical models of EDCA, we obtain transmission probability τi by applying the renewal theory and provide simple but accurate delay model for IEEE 802.11e EDCA by considering the possibility that a station’s backoff procedure may ...