Adaptive control system for car parking

In the paper, the first results of the work on the development and implementation of an adaptive control system for car parking are presented. The proposed approach to construction of a car control system differs from the commonly accepted approach [1–3] and is based on the autonomous adaptive control method [4] developed by the research team headed by A.A. Zhdanov. In the framework of this method, car control and training and retraining of the control system are implemented in one process with satisfaction of all necessary conditions and constraints. This allows the control system to adjust to parameters of a particular car and to automatically readjust if these parameters vary in the course of the car usage. In the paper, a program modeling car parking based on the principles developed in this study is described. Examples of parking a car for some particular cases of mutual location of obstacles and the desired slot in the parking place are presented.     

Sintered magnesium and magnesium-beryllium alloys

Summary The use of powder metallurgy methods for the production of magnesium alloys is highly promising. By employing technological procedures widely known in powder metallurgy practice, it is possible to make magnesium alloys whose production by the methods of melting and casting would be hardly feasible.The addition of finely dispersed magnesium oxide and an excess beryllium phase to the magnesium matrix secures an excellent combination of long-time oxidation and heat resistance at temperatures substantially above the permissible operating temperatures of the usual magnesium-base alloys.     

Analysis of model relations for turbulent heat diffusion as applied to the calculation of wake flows

An experimental test of the known approximations is made and a new relation is proposed for turbulent diffusion of heat or of a passive admixture.Translated from Inzhererno-Fizicheskii Zhurnal, Vol. 51, No. 6, pp. 896–902, December, 1986.     

Temperature fluctuation balance in an axisymmetric turbulent wake

Results of experiments conducted in the thermal wake behind an axisymmetric body are used to evaluate the radial profiles of different terms of the balance equation for the mean square of temperature fluctuations.Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 50, No. 2, pp. 181–187, February, 1986.     

Progressive Backward Photon Mapping

Programming and Computer Software - This work is devoted to the study of photon mapping methods applied to realistic rendering. In distinction from the conventional rendering methods, the...     

Elastic Properties of Suspended Conducting GaAs/AlGaAs Nanostructures by Means of Atomic Force Microscopy

This paper demonstrates the applicability of nanoindentation technique using atomic-force microscope cantilever for studying the elastic properties of suspended semiconductor structures on the basis of relatively thick GaAs/AlGaAs membranes in the case when their stiffness significantly exceeds that of the cantilever of atomic-force microscope, which is confirmed by the agreement between the experimentally determined values of both relative and absolute stiffness measured at different points of the investigated structure with theoretical predictions.