Time-frequency signal transform is considered. Advantages of joint time-frequency analysis over traditional separate analysis in time or frequency domains are shown. Matching pursuit algorithm and modified psychoacoustic matching pursuit describes. Universal audiocoder scheme based on sparse approximation with frame-based psychoacoustic optimized wavelet packet dictionary proposed.

Using the methodology of screening experiments the most significant parameters of the Darwish mobility model are identified. The possibility of optimizing the drift-diffusion model in order to achieve the adequacy of the simulation results of nanoscale MOS structures.

The method of synthesis of porous anodic alumina membrane with amorphous xerogel corresponding to chemical content of SrTiO₃ is reported. The membrane was prepared in oxalic acid electrolyte and revealed intensive blue photoluminescence with a broad band at 400 nm after heat treatment at 700 °С either with or without xerogel. Possible influence of oxygen vacancies in the structures membrane/xerogel on their luminescence and photocatalytic activity is reported.

This article presents the results of investigation the mechanisms of interaction between fragment of bacterial cell wall and silicon surface via quantum-mechanical methods. The main attention given to the interaction mechanisms oxygen-silicon and oxygen-hydrogen-silicon, where oxygen belongs to biomolecule and silicon and hydrogen belongs to silicon substrate.

For the aims of non-invasive medical spectrophotometry necessary to know the optical properties of biological tissues and fluids. One of the means of definition of the optical characteristics of the layers of the skin is the mathematical modeling of the process of passing of an electromagnetic wave. The Monte-Carlo method is the cornerstone of a technique of modeling. Human skin model used five-layer, the epidermis, the upper part of the dermis, the dermis, the lower part of the dermis, hypodermis. The simulation was performed in the program TracePro, which allows the analysis of the scattered light, the optical analysis of opto-mechanical systems, taking into account absorption, specular reflection and refraction, scattering and diffraction of light aperture.

Radioabsorbing structures are designed on the basis of water-containing fiber composites. The developed radioabsorbers are characterized by a low reflection coefficient in a wide frequency band, high processibility and availability of the components. Their shielding characteristics were studied in the frequency range of 0.7…17 GHz. It is shown that the developed structures are characterized by the shielding effectiveness up to 45 dB and the reflection coefficient about -15 dB in the studied frequency band.

A mathematical model of the quantum communication channel has been built that contains a photon counter as a receiving unit and allows to take into account how the quantum efficiency of detection, probability of dark pulses formation of the legitimate user receiver module, probability of optical radiation loss due to its unauthorized output from the optical fiber affect the throughput of a quantum communication channel.

The paper describes the architectural features of the implementation of a system for processing and visualization of results of spectral analysis. Architecture provides for a system of two types of clients: a desktop client and the client application is a web browser. Developed on the proposed principles of software will get fast and accurate results of the examination, to accumulate the results of spectral analysis in the database for further processing, as well as visualize, scale and detail the spectra.

The necessary theoretical information for parameter estimation algorithms informational predictability of stochastic processes. We consider examples of algorithms for estimating the predictability of information for the processes described by the optimal difference schemes, equivalent prognostic models in the form of stochastic differential equations.

The structure of the hardware-software complex intended for conducting psychophysiological research, allowing to automate and optimize the procedure for conducting surveys. One of the components of a software system is a support system and decision making implemented on the basis of the developed algorithms.

The research results of radioabsorbing composite materials based on chrysotile asbestos electromagnetic radiation reflection and attenuation characteristics in the frequency range 2...18 GHz are studied. The expediency of use of these materials for manufacturing of wide screens EME is shown.

The target dynamics model for tracking of spiraling reentry vehicles is considered. The features of Extended Kalman filter modification and Unscented Kalman filter are listed. The estimation performance of Extended Kalman filter modification and Unscented Kalman filter is compared.

A number of planning methods was reviewed. The comparative analysis of the methods from the identity management adaptation point of view was produced. Cooperative method of request palning was created. Algorithm of best longterm request execuion time calulation was created for minimization blocked requests. It was based on history of requests to a target system. The results of experimental research were shown.

This paper describes new applying of Multiple-Valued Logic for estimation of the factors affecting the operation of socio-economic systems, the example of the process of registration of enrollees for state exams by building structure function. It was suggested the algorithm for the study of factors affecting the performance of the social proccess. The practical significance is in the implementation of procedures to assess the significance of factors affecting the performance of the process holding records for centralized testing.