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15 papers · 1 filter
Statistical analysis of redundant systems with "warm" stand-by units
V. Bagdonavičius, I. Masiulaitytė, M. Nikulin
Mathematical formulation of fluent switching from "warm" to "hot" conditions of standby units is given using the well known Sedyakin's and accelerated failure time (AFT) models. No…
The pulsation modes of the pre-white dwarf PG 1159-035
J. E. S. Costa, S. O. Kepler, D. E. Winget +74
PG 1159-035, a pre-white dwarf with T_eff=140,000 K, is the prototype of both two classes: the PG1159 spectroscopic class and the DOV pulsating class. Previous studies of PG 1159-0…
Asymmetric phase diagram of mixed crystals
J. Macutkevic, J. Banys, R. Grigalaitis +1
In this article mixed CuInP(SSe) crystals were investigated by broadband dielectric spectroscopy (20 Hz - 3 GHz). From these results the complete phase diagram…
Quasi-relativistic behavior of cold atoms in light fields
G. Juzeliunas, J. Ruseckas, M. Lindberg +2
We study the influence of three laser beams on the center of mass motion of cold atoms with internal energy levels in a tripod configuration. We show that similar to electrons in g…
Formation of solitons in atomic Bose-Einstein condensates by dark-state adiabatic passage
G. Juzeliunas, J. Ruseckas, P. Öhberg +1
We propose a new method of creating solitons in elongated Bose-Einstein Condensates (BECs) by sweeping three laser beams through the BEC. If one of the beams is in the first order…
Trading activity as driven Poisson process: comparison with empirical data
V. Gontis, B. Kaulakys, J. Ruseckas
We propose the point process model as the Poissonian-like stochastic sequence with slowly diffusing mean rate and adjust the parameters of the model to the empirical data of tradin…