At T = 1.7 K the optical absorption of pure GaAs samples with thickness d = 0.4 to 4.4 μm has been investigated in the region of the exciton‐polariton resonances. The dependence of the integral absorption on the thickness is considered as a result of the competition of the optical processes in two different sample regions: near‐surface region, where the integral absorption saturates due to increasing damping parameter in the electric field and central region, where the exciton‐polariton is not perturbed. We have observed a series of narrow lines near the ground GaAs exciton state in the part of MQW spectra which belongs to the enlarged barrier. Calculations by the transfer matrix method give a good agreement with the model taking into account the quantization of the exciton as a whole and exciton‐polariton wave interference.

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The paper considers design features and functionality of the dynamic stand for assessing the time spent on human operator thinking forms during the hidden (latent) period as information passes through the brain according to experimental data working in Man-Machine Systems. This research is of interest as such a system is intellectual, so it is necessary to determine the pure delay time spent to implement thinking forms for assessing the quality of decisions made by a human operator in the control process. The study shows that a number of Wiener orthogonal G-functionals provides the most complete and rigorous human operator dynamics description and mathematical capabilities for calculating the necessary delay time.