The characteristics of blood microcirculation in human tissues have been investigated by recording and analyzing a dynamic speckle pattern. Methodical approaches have been proposed for evaluating the obtained data in order to verify speckle measurements using the widely used Doppler flowmetry technique.

The results of an experiment to study the effect of the microwave device shielding principle on the level of side spectral components (SSC) of its quartz generator radiation. The shielding principle which corresponds to the minimum SSC level of this element (-90.3 dBm) has been determined experimentally. Based on the obtained results, a modified installation location of the quartz generator has been proposed.

The article is devoted to the development of methods and hardware for scalpels sharpness checking. The necessity of improving the methodology and hardware for scalpels sharpness testing, based on the implementation of the conditions for conducting similar tests of injection needles, is substantiated. The values of piercing force and various materials puncturing time with a scalpel with a sharply sharpened and with a dull point were experimentally determined. Taking into account the revealed high sensitivity of the cellophane film puncture force to the scalpel condition, it has been suggested that it's nessesary to use 40 pm cellophane film as a punctured material when testing its sharpness.

The article describes an algorithm for the sparse decomposition of vibration signals scalogram for searching of the frequency domains with a significant energy contribution. The developed algorithm is proposed to be used for monitoring the technical condition of rotary equipment. The article presents the testing results of the sparse scalegram decomposition algorithm on the vibration signals of industrial equipment.

The task is a compact presentation of the contour of the object of observation. The proposed method performs data compression using uncorrelated conversion factors. Method enables data compression without loss. Simplified solution of tasks related to the detection and finding certain objects on images. The results of the evaluation of the effectiveness of encoding image object are shown.

It proposed to synthesize the stochastic code structures based on residue number system, which allows to form ensembles with acceptable correlation properties, cryptographic difficulty level of formed ensembles, depending on key, and with any length of sequence, which doesn't affect on the power of code structure, but defines its upper limit.

To predict the expected reliability of the developed software applications, a method based on the use of the statistical model of the operability of software is proposed. The model is based on generalized statistical data taken from domestic and foreign printing on the expected number of errors in the developed application software, depending on the number of lines of computer program code, the duration of its testing, the qualifications and experience of testers. An example of predicting the expected reliability of an application software is given

This paper provides an overview of different electronic compensation methods of a reference signal. An algorithm for electronic compensation of the DVB-T2 direct signal in a semi-active coherent radar has been proposed. A filter that provides direct signal suppression of at least 50 dB has been developed. The results of experimental studies on the detection of low-speed target with low effective scattering surface in the presence of a powerful reference signal have been presented.

A method for resolving the lexical ambiguity of biomedical terms has been proposed. The method is based on a comparison of «word bags» obtained from the context, definitions and information on related terms from the UMLS metathesaurus [1]. Modification of the method using the analysis of word importance using the statistical measure TF-IDF has been proposed. Experimental verification of the method has been performed on the open test MSH WSD data set [2], developed to support research in the field of lexical resolution.

The article is devoted to the development of speech segmentation algorithm on phonetic elements for the synthesis of speech-like signals in speech information protection systems. The main attention is paid to establishing the boundaries of phonetic units of speech, taking into account the influence of this factor on the quality of the synthesized speech by the compilation method. The features of establishing the boundaries of phonemes for fused speech and the influence of this factor on the quality of synthesized speech on the basis of phonemes are considered. It is proposed to ensure the quality of synthesized speech beginning and ending phonemes at the segmentation set in the transition implementation of a signal through zero and in the synthesis of speech-like signals to use the spline function at the boundaries of segments phonemes.

The surface potential of anodic alumina films and their charge properties have been studied. The surface potential of anodic alumina films after anodic process has positive values, but then this potential is decreased to zero level with subsequent transition to negative values. The negative displacement of the surface potential is associated with a negative built-in electric charge of aluminum anodic oxide. The mechanism of transition from the positive built-in electric charge to the negative one inside the anodic oxides is proposed. The highest density of the negative charge is observed in the films formed in electrolytes based on the aqueous solutions of the citric and phosphoric acids.

It has been considered the mathematical apparatus, allowing to find time characteristics of air traffic control dispatcher actions with the interface of an automated workplace of the regional dispatching centre of Uniform system of air movement organisation of Republic of Belarus.

The article presents the results of studies of the dielectric characteristics of titanium oxide films deposited by reactive magnetron sputtering of a Ti target in an Ar/O₂ gas mixture. Dependencies of dielectric constant, dielectric loss tangent, band gap, leakage current density on oxygen content in Ar/O₂ gas mixture during film deposition were established. Films with a dielectric constant of 20-30 units, a dielectric loss tangent of 0,02, a band gap of 3,82 eV, a leakage current density of less than 1,0 A/cm² at an electric field strength of 2,0*10⁶ V/cm, were obtained.

It has been solved the problem task for the numerical electrodynamic analysis of a Yagi-antenna using a mathematical model developed with the Poklington integral equation and the Krylov-Bogolyubov method with a reduction in the number of partitioning segments of passive conductors. The obtained results demonstrate the high efficiency of the proposed model, due to the combination of high accuracy solutions and saving computational resources.

The features of correlation-filter processing of broadband linear-frequency-modulated signal with full frequency demodulation are considered. The method of calculation of parameters of signals and the spectroanalyzer at high resolution on range in relation to radar stations of maintenance of the purposes of various basing on small and medium distances is presented.