Значение физико-математических дисциплин в подготовке военного инженера

Слово ―инженер‖ (ingeniator) впервые начало использоваться в античном мире, примерно в третьем веке до нашей эры и первоначально так назывались лица, изобретавшие военные машины и управлявшие ими в ходе военных кампаний. Военный инженер – старейшая из существующих инженерных специализаций. Слово инженер появилось изначально как обозначение человека, управляющего военной машиной

Stochastic and nonlinear control of attractor preference

Studying the response of multistable systems to stochastic and harmonic perturbations, we observe a surprising and counterintuitive asymptotic behavior, including nonmonotonic dependence in preference of some coexisting attractors with respect to the noise amplitude, i.e., the existence of a certain noise level for which the most probable size of the basin of attraction is larger than for other noise values, while the average size always decreases as the noise amplitude increases. Since the probabilistic size of the basin of attraction depends on the amplitude and frequency of external modulation applied to a system parameter, noise, periodic modulation, and a combination of both provide an efficient control of attractor preference in systems with multiple coexisting states. Such a control is demonstrated in the delayed feedback logistic map with two coexisting attractors and in the H�non map with three attractors. � 2012 IFAC

Noise-induced attractor annihilation in the delayed feedback logistic map

We study dynamics of the bistable logistic map with delayed feedback, under the influence of white Gaussian noise and periodic modulation applied to the variable. This system may serve as a model to describe population dynamics under finite resources in noisy environment with seasonal fluctuations. While a very small amount of noise has no effect on the global structure of the coexisting attractors in phase space, an intermediate noise totally eliminates one of the attractors. Slow periodic modulation enhances the attractor annihilation. © 2013 Elsevier B.V

Analysis of scorpion venom composition by Raman Spectroscopy

In this work we study the venom of two Centruroides scorpion species using Raman spectroscopy. The spectra analysis allows to determine the venoms chemical composition and to establish the main differences and similarities among the species. It is also shown that the use of Principal Component Analysis may help to tell apart between the scorpion species. © 2015 SPIE

Experimental study of self-oscillation frequency in a semiconductor laser with optical injection

Period-one and period-two oscillations in a diode laser subject to optical injection are experimentally investigated. The changes in the modulation frequency are studied as a function of the detuning frequency and the injection signal strength. © 2005 IOP Publishing Ltd