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Sharipov U.B.,Sredazonergosetprojekt | Egamnazarov G.A.,Tashkent State Technical University
Power Technology and Engineering | Year: 2017

Amethod for calculating currents in the wires of overhead transmission lines during asymmetric short circuits is proposed. This method is based on representing an overhead line as a multi-conductor system, so that the currents along each wire (in the phase and lightning protection cables and/or optical cables built into lightning protection cables) can be calculated taking into account the different characteristics of the line circuit, along with the major factors which produce the asymmetry of the initial three-phase transmission system. © 2017 Springer Science+Business Media New York


Zakirov R.,Tashkent State Technical University
2016 International Conference on Information Science and Communications Technologies, ICISCT 2016 | Year: 2016

In this paper analyzed time intervals for aircraft transit maintenance. Based on this analysis, free space optical data link proposed for economy of maintenance time by performing of some maintenance procedures on aircraft simultaneously with organizational procedures. © 2016 IEEE.


Grant
Agency: European Commission | Branch: FP7 | Program: CSA-SA | Phase: ENV.2009.4.1.4.1 | Award Amount: 646.56K | Year: 2010

Central Asia is an important Europes partner facing critical environmental challenges. Possessing certain experiences and capabilities of EO data application for solving environmental, economic, societal and other development problems, this region is better prepared for the uptake of GEOSS technologies than many other clusters of developing countries. Thus, the goal of SEOCA is to promote European GEO-techlogies in the region of Central Asia as a platform solution for the regional development challenges. In order to achieve this goal, the following activities will be implemented: - mapping of regional needs, capabilities, stakeholders, providers and planning further GEO CB activities in the region for the period until 2020 - pilot GEO capacity building programme incl. training for stakeholders, reforming educational standards, direct brokerage between stakeholders and providers, etc. - setting up regional network of GEO offices in all 5 countries - pilot regional GEONETCast network - systemic dissemination and networking activities aimed at promoting GEOSS technologies in the region, building synergies with other relevant initiatives. As a result the consortium expects that SEOCA will radically increase acceptance of GEOSS technologies by regional governments for national environmental services, meteorology, natural hazards prevention, geological explorations, etc. Moreover, the project will lay a foundation for long-term GEO CB activities in the region


Aliboev B.A.,Tashkent State Technical University
Journal of Friction and Wear | Year: 2016

Specific properties of hydraulic system performance in a cotton tractor have been described. The influence of hydraulic oil purity and intensity of directional control valves’ actuations upon wear of precision parts has been demonstrated. © 2016, Allerton Press, Inc.


Makhkamov K.K.,Tashkent State Technical University
Journal of Friction and Wear | Year: 2016

The problems of the formation of regular roughness of working surfaces of friction units are discussed in the article based on the energy theory of friction and wearing. The obtained results make it possible to reduce the time spent during the technological running-in of machines and mechanisms. © 2016, Allerton Press, Inc.


Iskanadjiev I.M.,Tashkent State Technical University
Journal of Automation and Information Sciences | Year: 2013

New simplified schemes for the Pontryagin lower alternating integral are constructed. It is proved on the basis of these schemes that in linear differential game for initial states, to which the lower alternating integral is applied, there exists pursuit strategy with piecewise constant realization, which guarantees exact termination of pursuit. © 2013 by Begell House Inc.


Iskanadjiev I.M.,Tashkent State Technical University
Cybernetics and Systems Analysis | Year: 2013

A new simplified scheme is proposed to construct Pontryagin's alternating integral in pursuit games described by differential inclusions z â̂̂ - F (t, υ), where F is a continuous compactvalued mapping. The scheme is applied to differential games of pursuit. © 2013 Springer Science+Business Media New York.


Boltaev K.K.,Tashkent State Technical University | Tashmukhamedova D.A.,Tashkent State Technical University | Umirzakov B.E.,Tashkent State Technical University
Journal of Surface Investigation | Year: 2014

It is established that ion implantation in combination with annealing makes it possible to produce regularly arranged nanocrystalline phases and continuous films of metal silicides in the surface region of Si. It is shown that silicide nanocrystals and nanofilms crystallize in the cubic lattice. A model of a Si surface with silicide nanocrystals is developed. © 2014 Pleiades Publishing, Ltd.


Nasriddinov S.S.,Tashkent State Technical University
Journal of Nano- and Electronic Physics | Year: 2015

The paper presents the investigation results of the characteristics of a new type of temperature sensor based on silicon nanoclusters of nickel atoms in extreme conditions. It is shown that such sensors have high sensitivity and speed; they can successfully operate at elevated radiation and vibration. © 2015 Sumy State University.


Iskanadjiev I.M.,Tashkent State Technical University
Journal of Automation and Information Sciences | Year: 2014

Approximation properties of main operators of differential games of pursuit with unfixed time are studied and their stability for unilateral perturbations of initial data of differential game is proved. © 2014 by Begell House Inc.

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