Observation of stochastic resonance in a monostable magnetic system

A stochastic resonance on mixed harmonics is observed experimentally in a monostable magnetic system. The curve of the stochastic resonance at higher-order harmonics in systems with a weak nonlinearity is calculated. Pis’ma Zh. éksp. Teor. Fiz. 65, No. 10, 788–792 (25 May 1997)     

The method of pursuit by several controlled objects of different types

The problem of the pursuit of one evader by several controlled objects of different types is examined. The sufficient conditions are obtained for the pursuit game to terminate in a finite time. The proposed method of pursuer interaction assumes that the pursuing players are separated into two groups, the first of which holds the evader in some domain, while the second searches for the evader in this domain. The paper touches on the researches in /1–9/. Typical examples illustrate the results.     

Stress Analysis of Biconvex Laminated Orthotropic Shells that are Shallow to a Variable Degree

The stress–strain state of biconvex laminated orthotropic shells is analyzed against the degree of shallowness and the parameters of orthotropy. Numerical values of deflections and stresses are obtained by solving two-dimensional boundary-value problems using spline-functions and the discrete-orthogonalization method. The effect of the rise of shells on the displacement and stress fields is analyzed for different parameters of orthotropy     

Stress Analysis of Hollow Elliptic Cylinders with Variable Eccentricity and Thickness

An approach developed to solve boundary-value stress problems for noncircular cylinders is used to analyze the stress state of elliptical cylinders in the case where their eccentricity and thickness change under uniform and local loads.     

Theoretical investigations of the optical properties of SrS

A computation of the band structure of SrS is performed self-consistently by the method of linear associated plane waves within the framework of the electron density functional. On the basis of the states density obtained, computations are made of the imaginary part of the dielectric permittivity function in a constant matrix element approximation and with its exact value taken into account. The strong energy dependence of the matrix element and the necessity to take it into account in computations of the optical characteristics of dielectrics are shown.Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 3, pp. 79–81, March, 1990.