Fundamental research

Generalized correlation of nanocrystalline structure and mechanical properties formation in Fe-based alloys during severe plastic deformation.

The main result of the work is the scientific conception of formation in α-Fe and it’s alloys nano- and submicrostructures under severe plastic deformation by friction (SPDF) in gas atmosphere (argon, air, ammonia). This original new method allows one to refine grain structure down to nanometre scale together with modifying the surface by dopant element.  Minimum strain e necessary to produce 100 nm sized α-Fe grained structure was estimated to be about 10 with high strain rate (έ>102 s-1) in dynamic recrystallization condition.

Complex of mechanical properties of aluminium based intermetallic compounds and their deformation and fracture features at the nanometre and micrometre scales.

First in the identical loading conditions the mechanical parameters such as Young's modulus Е, microhardness HV and nanohardness Hh, plasticity characteristics dH »dA, yield stress s0,2, temperature range of ductile-brittle transition, fracture toughness K1c, of intermetallics on the basis of aluminium, wich were absent in reference books till now, and the features of their deformation and destructions on nanо- and microlevels are determined.

Elaboration of scientific fundamentals of building of microcontroller power sources for creation of the new technology of information protection in computer systems

As the result of research work a comparative analysis of existing security systems of microprocessor-based systems was made with aim to identify their disadvantages and improvement prospects. Existing microcontrollers were explore with aim to protection from readers on current consumption are researched and to determine the real security of high end microcontrollers and suggest ways to improve it. The algorithm of discrete wavelet analysis and spectral analysis in polar coordinates was further developed.

Theoretical bases of construction of mobile broadband radioaccess systems of millimeter wave band.

Working out of principles of construction and methods of implementation of mobile broadband access systems of a millimeter wave band for maintenance of high-speed access of users to ІР-networks data transfers under condition of maintenance of the secured quality of giving of services was a research work main objective.

Intellectual selforganized radionetworks.

The theoretical basis for the construction of telecommunications radio networks which do not require fixed infrastructure and consist of fixed and mobile subscribers has been established. The main scope of the work lies in the use of knowledge processing technologies for resource management processes of radio models at different OSI layers, which will provide the ability to self-organizing as well as functioning in uncertain conditions.

Theoretical and experimental studies of the morphology and optical properties of photochemically / thermally synthesized nanoparticles with characteristic surface plasmon resonance spectra

розташування гексагональних, переважно орієнтованих ділянок поблизу вершин двох типових пірамідальних піків

Scientific interest in noble metals nanoparticles (NPs) and nanostructured metal surfaces formed by their deposition is caused by their unique physical properties, including surface enhancement of linear and nonlinear optical phenomena in the media in contact with such nanostructures. Morphological characteristics of NPs determine their catalytic, sensor, optical properties. Thus, it is of great importance to identify factors that affect the morphology of nanoparticles formed in multicomponent solution with regard to kinetic phenomena in solution and on the NPs surface.

Influence of magnetic field on auto-oscillating processes on interface surface conductor-electrolyte.

напруженість магнітного поля 2500 Е

New principles of operating autooscillating processes in interphase of conductor-electrolyte by means of external permanent magnetic field are developed. Detailed description of autooscillating phenomena is obtained in interphase of conductor-electrolyte in permanent magnetic field. It is a new example of nonlinear self-organization in system that is dissimilar to thermodynamic equilibrium.

Architectural conception and network processor development which provide intelectual data processing.

A set of methods for pipelined computer system synthesis is developed. The methods are based on mapping the spaced synchronous dataflow graphs (SSDFG) into the system structure and its schedule. The input data of the methods are initial SSDFG, given period of the algorithm implementation, and optimization criterium. The developed methods provide minimising the clock period as well as processor unit, register, multiplexor number, interprocessor communications, memory volume, energy consumption minimizations.

Research of actual problems of theory of random processes, mathematical analysis and boundary-value problems of mathematical physics

The aim of the project is: 1) Generalization of the theory of regularly varying functions and further development of the theory of pseudo-regular functions; 2) Development of the theory of functions with non-degenerated groups of regular points; 3) Study of asymptotic behavior of solutions of stochastic differential equations; 4) Study of asymptotic behavior of functional parameter estimates for stochastic processes and Volterra systems; 5) Study of distributions of functionals of stochastic processes and fields, particularly of Gaussian ones; 6) Construction of new generalizations of hyper

Intensification of heat exchange during chladones condensation and their composites inwardly pipes and channels including mini- and microchannels

Experimental research of heat exchange is conducted during condensation of water, chladone of R-141b and mixtures of chladones of R-22 and R-407С in a horizontal pipe with the passive intensifiers of heat exchange – wire rings and wire longitudinal scope at the circular, расслоенном and asymmetric flow of phases. The field of temperatures is measured in the vertical section of the thick-walled test area, passing through circular intensifiers.

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