703 research outputs found

    Main directions of production diversification and restructuring in the Russian Defence Industry Complex

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    The purpose of the article is to specify the proposals of the President of the Russian Federation on diversification and restructuring of production for the financial recovery of enterprises and organisations of the Russian Defence Industry Complex in terms of preparing proposals on procedures and tools for determining the optimal range of high-tech civilian products.The methodological basis of the approach proposed in the article is the specificity of the organisation of the production of defenсe products. The use of production and technological specialisation has been proposed as the main principle for developing a market organisational structure for managing a diversified defenсe enterprise.The comparative analysis of the specifics of military and civilian production's organisation have been carried out, and their fundamental differences have been revealed. The recommendations on the choice of optimal range of civilian products being mastered, have been given. The basic principles of building a market organisational structure for managing a diversified production and economic complex have been proposed. Based on this, a typical version of the structure has been presented.Diversification of modern production in the defence complex is a rather long-term labor-intensive and capital-intensive process. The proposals presented in the research paper will allow, especially at the initial stage of its implementation, to optimise the amount of state support through the correct choice of priority areas and projects for the production of high-tech civilian products, and the transition to a new organisational structure. All this will contribute to saving limited budgetary funds and to carrying out the necessary organisational and structural changes in the industry

    Experiments on rehabilitation of radioactive metallic waste (RMW) of reactor stainless steels of Siberian chemical plant

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    Stainless steel pipes, used to cool a reactor plant, have a high cost, and aftertaking a reactor out of service they must be buried together with other radioactivewaste. Therefore, the relevant problem is the rinse of pipes from contamination,followed by returning to operation

    Artificial ionospheric layers driven by high-frequency radiowaves : an assessment

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    High-power ordinary mode radio waves produce artificial ionization in the F-region ionosphere at the European Incoherent Scatter (EISCAT at Tromsø, Norway) and High-frequency Active Auroral Research Program (HAARP at Gakona, Alaska, USA) facilities. We have summarized the features of the excited plasma turbulence and descending layers of freshly-ionized (“artificial”) plasma. The concept of an ionizing wavefront created by accelerated suprathermal electrons appears to be in accordance with the data. The strong Langmuir turbulence (SLT) regime is revealed by the specific spectral features of incoherent radar backscatter and stimulated electromagnetic emissions. Theory predicts that the SLT acceleration is facilitated in the presence of photoelectrons. This agrees with the intensified artificial plasma production and the greater speeds of descent but weaker incoherent radar backscatter in the sunlit ionosphere. Numerical investigation of propagation of O-mode waves and the development of SLT and descending layers have been performed. The greater extent of the SLT region at the magnetic zenith than at vertical appears to make magnetic zenith injections more efficient for electron acceleration and descending layers. At high powers, anomalous absorption is suppressed, leading to the Langmuir and upper hybrid processes during the whole heater-on period. The data suggest that parametric UH interactions mitigate anomalous absorption at heating frequencies far from electron gyroharmonics and also generate SLT in the upper hybrid layer. The persistence of artificial plasma at the terminal altitude depends on how close the heating frequency is to the local gyroharmonic

    A kinetic description of electron beam ejection from spacecraft

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    Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/94997/1/grl7005.pd

    Оценка вкладов проводимости и электрического поля в интенсивность продольных токов в ночной полярной ионосфере во время взрывной фазы суббури

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    Based on the output data of the magnetogram inversion technique, we analyze the dynamics of the Pedersen ionospheric currents and field-aligned currents (FACs) in the night mesoscale cells of the three main large-scale Iijima and Potemra Regions (R1, R2 and R0) during the expansion phase of the summer and winter substorms. FACs play a key role in the ionosphere-magnetosphere interaction. The continuity equation for the electric current density contains two types of possible feedback within the electric circuit parts that connect Pedersen currents and FACs in each cell. Pedersen ionospheric conductivity is dominant to Type 1, and the electric field dominates in Type 2 feedback. This paper studies both types of physical feedback in mesoscale cells of downward and upward FACs on the night side of the polar ionosphere from the data of two selected substorms of the summer and winter seasons in the northern hemisphere.На основе выходных данных техники инверсии магнитограмм выполнен анализ динамики интенсивности ионосферных токов Педерсена и продольных токов в ночных мезомасштабных ячейках трех основных крупномасштабных зон (1, 2 и 0) Ииджимы и Потемры во время взрывной фазы летней и зимней суббурь. Продольные токи играют ключевую роль в ионосферно-магнитосферном взаимодействии. Уравнение непрерывности плотности электрического тока содержит два типа возможной обратной связи на участках электрической цепи, соединяющих в каждой ячейке токи Педерсена и продольные токи. Ионосферная проводимость Педерсена является основной для Типа 1, а в обратной связи Типа 2 доминирует электрическое поле. В работе исследуются оба типа физической обратной связи в мезомасштабных ячейках втекающих и вытекающих продольных токов на ночной стороне полярной ионосферы по данным двух избранных суббурь летнего и зимнего сезонов в Северном полушарии

    Comparative Analysis of the Dynamical Spectra of a Polarization of an Active Medium and an Electromagnetic Field in the Superradiant Heterolasers

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    The complicated pulsed generation regimes of a CW-pumped superradiant semiconductor laser are analyzed via the dynamical spectra of the dipole optical oscillations of active centers. This novel approach appears to be more informative than the standard analysis of the dynamical spectra of laser emission if a dipole relaxation rate is less than a cavity relaxation rate. The advantages of the method are demonstrated for a number of superradiant lasing regimes on the basis of the numerical solution to 1D Maxwell–Bloch equations for a two-level active medium in a low-Q cavity within one-dimensional approximation
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