590 research outputs found

    Directions to improve economic efficiency of regional production

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    The paper provides theoretical grounding and the directions for improving the economic efficiency of the regional feedstuff production. The study develops a conceptual model of distributing management functions of feedstuff production between the regional authorities of state sectoral and economic management and the district level. The authors suggest the methodology for calculating potential capacity of intraregional feedstuff market, considering the demands of all categories of agricultural manufacturers. The study examines possibilities for implementing the strategy of diversified growth and development of the intraregional feedstuff market, including the terms of interaction between the large and micro-business inside the industry and cooperation of micro-business feedstuff manufacturers with agricultural production. The authors have developed the methodology for assessing the efficiency of feedstuff production, based on the aggregate estimation of the management organization, conditions for the development of feedstuff production and changes in the feedstuff production and livestock breeding industry.peer-reviewe

    A comparison of the characteristics of extreme drought during the late 20 th and early 21st centuries over Eurasia and North America

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    The atmospheric general circulation character during summer droughts over Eastern Europe / Western Russia and North America from 1970-2020 is examined here. A criterion to examine atmospheric drought events encompassed the summer season was used to determine which years were driest using precipitation, evaporation, and areal coverage. The relationship between drought and atmospheric character using the Dzerzeevsky climatic classification scheme, atmospheric blocking, teleconnections, and information entropy are used to study the atmospheric dynamic

    ENERGY EFFICIENT STREET LIGHTING CONTROL SYSTEM

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    This paper presents the algorithm of the energy-efficient street lighting control system using artificial neural networks technology. To increase the energy efficiency reduction in the luminous flux of lighting systems during periods of low traffic intensity is proposed. According to the results of computer simulation of the algorithm, was achieved power savings of 23.48 % compared with traditional algorithms.Π’ Ρ€Π°Π±ΠΎΡ‚Π΅ ΠΈΠ·Π»ΠΎΠΆΠ΅Π½ Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌ Ρ€Π°Π±ΠΎΡ‚Ρ‹ энСргоэффСктивной систСмы управлСния ΡƒΠ»ΠΈΡ‡Π½Ρ‹ΠΌ освСщСниСм с использованиСм Ρ‚Π΅Ρ…Π½ΠΎΠ»ΠΎΠ³ΠΈΠΉ искусствСнных Π½Π΅ΠΉΡ€ΠΎΠ½Π½Ρ‹Ρ… сСтСй. Для увСличСния энСргоэффСктивности прСдлагаСтся ΡƒΠΌΠ΅Π½ΡŒΡˆΠ΅Π½ΠΈΠ΅ свСтового ΠΏΠΎΡ‚ΠΎΠΊΠ° ΠΎΡΠ²Π΅Ρ‚ΠΈΡ‚Π΅Π»ΡŒΠ½Ρ‹Ρ… установок Π² ΠΏΠ΅Ρ€ΠΈΠΎΠ΄Ρ‹ с Π½ΠΈΠ·ΠΊΠΎΠΉ ΠΈΠ½Ρ‚Π΅Π½ΡΠΈΠ²Π½ΠΎΡΡ‚ΡŒΡŽ Π΄ΠΎΡ€ΠΎΠΆΠ½ΠΎΠ³ΠΎ двиТСния. По Ρ€Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Π°ΠΌ ΠΊΠΎΠΌΠΏΡŒΡŽΡ‚Π΅Ρ€Π½ΠΎΠ³ΠΎ модСлирования ΠΏΡ€Π΅Π΄Π»ΠΎΠΆΠ΅Π½Π½ΠΎΠ³ΠΎ Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΠ°, экономия элСктроэнСргии составила 23,48 % ΠΏΠΎ ΡΡ€Π°Π²Π½Π΅Π½ΠΈΡŽ с Ρ‚Ρ€Π°Π΄ΠΈΡ†ΠΈΠΎΠ½Π½Ρ‹ΠΌΠΈ Π°Π»Π³ΠΎΡ€ΠΈΡ‚ΠΌΠ°ΠΌΠΈ

    Development the control system of the power of microclimatic installations based on fuzzy logic

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    The paper presents one possible solution of development the control system of the power of microclimatic installations based on fuzzy logic.Π’ Ρ€Π°Π±ΠΎΡ‚Π΅ ΠΈΠ·Π»ΠΎΠΆΠ΅Π½ΠΎ ΠΎΠ΄Π½ΠΎ ΠΈΠ· Π²ΠΎΠ·ΠΌΠΎΠΆΠ½Ρ‹Ρ… Ρ€Π΅ΡˆΠ΅Π½ΠΈΠΉ Ρ€Π°Π·Ρ€Π°Π±ΠΎΡ‚ΠΊΠΈ систСмы управлСния ΠΌΠΎΡ‰Π½ΠΎΡΡ‚ΡŒΡŽ микроклиматичСских установок Π½Π° основС Π½Π΅Ρ‡Π΅Ρ‚ΠΊΠΎΠΉ Π»ΠΎΠ³ΠΈΠΊΠΈ

    COMPARISION OF LOAD MODELS FOR LIGHTING NETWORKS CACULATION

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    Π’ Ρ€Π°Π±ΠΎΡ‚Π΅ рассмотрСны ΠΌΠΎΠ΄Π΅Π»ΠΈ Π½Π°Π³Ρ€ΡƒΠ·ΠΎΠΊ ΠΏΡ€ΠΈ расчСтС элСктричСской части ΠΎΡΠ²Π΅Ρ‚ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠΉ сСти. ΠŸΡ€ΠΎΠΈΠ·Π²Π΅Π΄Π΅Π½ΠΎ сравнСниС прСдставлСния ΠΎΡΠ²Π΅Ρ‚ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠΉ Π½Π°Π³Ρ€ΡƒΠ·ΠΊΠΈ Π² Π²ΠΈΠ΄Π΅ ΠΌΠΎΠ΄Π΅Π»ΠΈ постоянной мощности ΠΈ Π² Π²ΠΈΠ΄Π΅ зависимостСй потрСбляСмых мощностСй ΠΎΡ‚ ΠΏΡ€ΠΈΠ»ΠΎΠΆΠ΅Π½Π½ΠΎΠ³ΠΎ напряТСния. Π Π΅Π·ΡƒΠ»ΡŒΡ‚Π°Ρ‚Ρ‹ исслСдования ΠΏΠΎΠΊΠ°Π·Π°Π»ΠΈ, Ρ‡Ρ‚ΠΎ расхоТдСниС Ρ€Π΅ΠΆΠΈΠΌΠ½Ρ‹Ρ… ΠΏΠ°Ρ€Π°ΠΌΠ΅Ρ‚Ρ€ΠΎΠ² Π΄Π²ΡƒΡ… ΠΌΠΎΠ΄Π΅Π»Π΅ΠΉ Π½Π°Π³Ρ€ΡƒΠ·ΠΎΠΊ ΠΎΡΠ²Π΅Ρ‚ΠΈΡ‚Π΅Π»ΡŒΠ½ΠΎΠΉ сСти Π½Π΅ ΠΏΡ€Π΅Π²Ρ‹ΡˆΠ°Π΅Ρ‚ 2%.In the paper, load models are considered in calculating the electrical part of the lighting network. A comparison is made of the representation of the lighting load in the form of a constant power model and in the form of the dependence of the power consumption on the applied voltage. The results of the research showed that the discrepancy between the regime parameters of the two models of loads of the lighting network does not exceed 2%

    Strength and fatigue properties enhancement in ultrafine-grained Ti produced by severe plastic deformation

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    Severe plastic deformation (SPD) of titanium creates an ultrafine-grained (UFG) microstructure which results in significantly enhanced mechanical properties, including increasing the high cycle fatigue strength. This work addresses the challenge of maintaining the high level of properties as SPD processing techniques are evolved from methods suitable for producing laboratory scale samples to methods suitable for commercial scale production of titanium semi-products. Various ways to optimize the strength and fatigue endurance limit in long-length Grade 4 titanium rod processed by equal channel angular pressing (ECAP) with subsequent thermal mechanical treatments are considered in this paper. Low-temperature annealing of rods is found to increase the fatigue limit, simultaneously enhancing UFG titanium strength and ductility. The UFG structure in titanium provides an optimum combination of properties when its microstructure includes mostly equiaxed grains with high-angle boundaries, the volume fraction of which is no less than 50%

    Tensor Ayy and vector Ay analyzing powers in the H(d,d')X and ^{12}C(d,d')X reactons at initial deuteron momenta of 9 GeV/c in the region of baryonic resonances excitation

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    The angular dependence of the tensor Ayy and vector Ay analyzing powers in the inelastic scattering of deuterons with a momentum of 9.0 GeV/c on hydrogen and carbon have been measured. The range of measurements corresponds to the baryonic resonance excitation with masses 2.2--2.6 GeV/c^2. The Ayy data being in good agreement with the previous results demonstrate an approximate tt scaling up to -1.5 (GeV/c)^2. The large values of A_y show a significant role of the spin-dependent part of the elementary amplitude of the NN->NN* reaction. The results of the experiment are compared with model predictions of the plane-wave impulse approximation.Comment: 7 pages, 7 figures. submitted to Yad.Fi
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