Nonlinear resonance reflection from and transmission through a dense glassy system built up of oriented linear Frenkel chains: two-level models

A theoretical study of the resonance optical response of assemblies of oriented short (as compared to an optical wavelength) linear Frenkel chains is carried out using a two-level model. We show that both transmittivity and reflectivity of the film may behave in a bistable fashion and analyze how the effects found depend on the film thickness and on the inhomogeneous width of the exciton optical transition.Comment: 26 pages, 9 figure

Pattern formation in 2-frequency forced parametric waves

We present an experimental investigation of superlattice patterns generated on the surface of a fluid via parametric forcing with 2 commensurate frequencies. The spatio-temporal behavior of 4 qualitatively different types of superlattice patterns is described in detail. These states are generated via a number of different 3--wave resonant interactions. They occur either as symmetry--breaking bifurcations of hexagonal patterns composed of a single unstable mode or via nonlinear interactions between the two primary unstable modes generated by the two forcing frequencies. A coherent picture of these states together with the phase space in which they appear is presented. In addition, we describe a number of new superlattice states generated by 4--wave interactions that arise when symmetry constraints rule out 3--wave resonances.Comment: The paper contains 34 pages and 53 figures and provides an extensive review of both the theoretical and experimental work peformed in this syste

CHARACTERISTICS OF DETECTION LINEAR POLARIZED RADARS SIGNALS

The article considers the characteristics of detection of linear polarized radars performance of angle orientation plane polarization radiowave

ANTHRAX IN THE WORLD, CIS AND RUSSIAN FEDERATION (LITERATURE REVIEW)

In this review we presented data about infection cases of people and animals with anthrax in the world, CIS and Russia based on the materials of WHO, Promed-mail andRospotrebnadzorwebsites and monographs of Russian scientists. The epidemiological situation of this serious infection remains quite serious and is evaluated as stressful and having no tendency to stabilization due to existence of soil bornefocus which are active for many years, causing periodic outbreaks among farm animals and people

О ФАЗОВЫХ ХАРАКТЕРИСТИКАХ ВАРАКТОРНЫХ УМНОЖИТЕЛЕЙ ЧАСТОТЫ

Described connection betwttn phase and amplitude characteristics of varactors multipliers frequency with change mode operation of devices.Получена связь между фазовыми и амплитудными характеристиками варакторных умножителей при изменении режима работы устройства

Слежение за углом ориентации плоскости поляризации электромагнитной волны

Variants construction tracking system for orientation angle plate polarization electromagnetic wave are considered.Рассматриваются варианты построения систем слежения за углом ориентации плоскополяризованной электромагнитной волны

Поляризационное оценивание объектов под природными образованиями

The article discusses the use of joint polarization and robust signal processing algorithms.В статье рассмотрены вопросы совместного применения поляризационной обработки сигналов и робастных алгоритмов

Радиолокационные характеристики при флуктуациях угла ориентации плоскополяризованной электромагнитной волны

The article considers the characteristics of detection of linear polarized radars performance of angle orientation plane polarization radiowave.Находятся характеристики обнаружения линейно поляризованного радиолокационного сигнала в случае флуктуационного поведения угла ориентации плоскости поляризации электромагнитной волны