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Wyszukujesz frazę "Boyko, A." wg kryterium: Autor

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    Wyświetlanie 1-10 z 10
    Tytuł:
    Research on reliability of subsystems of grain harvesting combine
    Badania niezawodnosci podsystemow zbozowego kombajnu
    Autorzy:
    Boyko, A.
    Dumenko, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/791944.pdf
    Data publikacji:
    2011
    Wydawca:
    Komisja Motoryzacji i Energetyki Rolnictwa
    Tematy:
    reaping-machine
    reliability
    technical system
    harvesting machine
    combine-harvester
    subsystem
    technical maintenance
    chain connection
    Opis:
    The results of theoretical research on reliability indices of combine harvesters subsystems for effective realization of harvesting in short periods of reaping have been considered.
    Rezultaty badań teoretycznych na indeksach niezawodności podsystemów zbożowego kombajnu dla realizacji zbioru efektywnego ziarna w najkrótszym okresie.
    Źródło:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa; 2011, 11C
    1641-7739
    Pojawia się w:
    Teka Komisji Motoryzacji i Energetyki Rolnictwa
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Intelligent technologies in production quality assessment
    Technologie inteligentne w zarządzaniu jakością produkcji
    Autorzy:
    Hotra, O.
    Hunkalo, A.
    Boyko, O.
    Powiązania:
    https://bibliotekanauki.pl/articles/159735.pdf
    Data publikacji:
    2011
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Elektrotechniki
    Tematy:
    jakość
    zarządzanie jakością
    system ekspertowy
    konsument
    quality
    assessment
    improvement
    expert system
    consumers
    Opis:
    In the proposed article, the question of production (service) quality assessment with the use of expert systems concerning the consumer requirements and expectations is under consideration.
    W artykule opisano zagadnienie zarządzania jakością produkcji (usług) z wykorzystaniem systemu ekspertowego w celu spełnienia wymagań i oczekiwań konsumentów.
    Źródło:
    Prace Instytutu Elektrotechniki; 2011, 249; 15-20
    0032-6216
    Pojawia się w:
    Prace Instytutu Elektrotechniki
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Crossing axes of workpiece and tool at grinding of the circular trough with variable profile
    Autorzy:
    Kalchenko, V.
    Yeroshenko, A.
    Boyko, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/387140.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    circular trough
    grinding
    equidistant curves
    cutting edge
    abrasive surface
    abrasive materials
    crossed axes
    abrasive wheel
    orientation angle
    grinding performance
    Opis:
    In the article the method of grinding with crossed axes of the tool and the workpiece got further developed. The work discloses a method of processing details having an external surface with a profile in the form of an arc of a circle of variable radius (for example, rolls of pipe rolling mills). The particular three-dimensional geometric models of the processing, shaping and profiling of abrasive wheels have been developed. A method for controlling the grinding process, which ensures the removal of allowances along equidistant curves has been offered. The developed method of grinding provides a constant depth of cutting according to the coordinate of profile processing. This is achieved at the expense of the synchronous inclination of the wheel and its insertion by the size of the allowance. The diameter of grinding wheel affects on the maximum angle of orientation of the wheel has been proven. It has been shown that increasing the diameter of the abrasive wheel has led to a slight decrease in value orientation angle.
    Źródło:
    Acta Mechanica et Automatica; 2018, 12, 4; 281-285
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Forecasting economic and financial indicators by supply of deep and recovery neural networks
    Autorzy:
    Boyko, N.
    Ivanets, A.
    Bosik, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/411261.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Oddział w Lublinie PAN
    Tematy:
    neural network
    deep
    recurrent
    activation function
    feedforward
    neuron
    hidden layer
    stock price prediction
    Opis:
    This paper studies the potential of the application of the Recurrent Neural Networks, as well as the Deep Neural Networks in the field of the finances and trading. In particular, their use in the stock price predicting software. The concepts of the RNNs and DNNs are provided and explained thoroughly. Both techniques RNNs and DNNs are utilized in the implementation of the stock price predicting software. Two separate versions of the software are created in order to demonstrate the main differences between the algorithms, as well as to determine the best of the two. Each version is thoroughly examined. The comparison of each of the algorithms is performed and highlighted. Examples of the implementations of the software, utilizing each of the algorithms on big volumes of stock data, for stock price prediction are provided. The article summarizes the concept of stock price prediction backed by the popular machine learning algorithms and its application in the nowadays world.
    Źródło:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2018, 7, 2; 3-8
    2084-5715
    Pojawia się w:
    ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Increasing of energy efficiency of spindles with fluid bearings
    Autorzy:
    Fedorynenko, D.
    Sapon, S.
    Boyko, S.
    Urlina, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/387579.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    energy efficiency
    power losses
    hybrid fluid bearing
    spindle
    machine tool
    low viscosity lubrication
    corrosion protection
    Opis:
    Promising ways of energy efficiency gain of spindles with fluid flow bearings are offered. New design of journal hybrid flow bearing which contains spherical bearing pockets and adjustable valves with relay control system is offered to improve energy efficiency of spindle units of machine tools. To reduce power losses of fluid bearings at high speed special lubrication based on water with integrated system of corrosion protection is offered. Results of theoretical research of energy consumption of grinding machine tool with a new design of spindle hybrid bearings are presented. Power losses of the spindle unit with both new design and base design of journal bearings are assessed. Effectiveness of new design of spindle hybrid bearings at high operating speeds is shown.
    Źródło:
    Acta Mechanica et Automatica; 2017, 11, 3; 204-209
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determination of cutting forces in grinding with crossed axes of tool and workpiece
    Autorzy:
    Kalchenko, V.
    Yeroshenko, A.
    Boyko, S.
    Sira, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/386456.pdf
    Data publikacji:
    2017
    Wydawca:
    Politechnika Białostocka. Oficyna Wydawnicza Politechniki Białostockiej
    Tematy:
    cutting force
    grinding
    deforming grain
    cutting edge
    abrasive surface
    abrasive material
    crossed axes
    abrasive grain
    cut volume
    grinding wheel
    Opis:
    In the work the analysis of existent methods of determination of local and general forces of cutting at polishing of surfaces with a type as the arc of circumference is given. The dependence for determination of speed polishing and method for determination of thickness of the cut away layer on condition of equality of the tricked into and taken off volumes of material are offered. The method of determination of cutting forces, which takes into account cutting and deforming grain, is suggested. The method of determining the thickness of a cutting layer of one of the cutting edge, from the condition that the volume of material that is brought and is cut in each local point of contact spots has been proposed. The proposed method takes into account the compliance of the processing system and the discontinuity of the abrasive surface of the tool. By experimental way upper limits of thickness cutting layer when using different abrasive materials for a wide range of cutting speeds have been obtained.
    Źródło:
    Acta Mechanica et Automatica; 2017, 11, 1; 58-63
    1898-4088
    2300-5319
    Pojawia się w:
    Acta Mechanica et Automatica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Research to longevity brake lines on the exploitations
    Исследование долговечности тормозных накладок в эксплуатации
    Autorzy:
    Tujrin, S.
    Boyko, G.
    Revin, A.
    Fedotov, V.
    Powiązania:
    https://bibliotekanauki.pl/articles/374407.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
    Tematy:
    longevity of the brake linings
    vehicles
    brake system
    brake linings
    resource of the brake lining
    żywotność okładzin hamulcowych
    pojazd
    układ hamulcowy
    okładzina hamulcowa
    Opis:
    Brake lines are tested for strength and durability. However, tests of strength are short-term, but tests of durability are durable, since their aim is to assess the effectiveness of the brake linings during operation. Therefore, reduction of time evaluating the durability of brake linings exploitation is urgent. The article describes the results of the research on the longevity of the brake linings of different types of vehicles based on their controllable operation and the method of accelerated estimation of the longevity of brake linings based on the operation of their analogues.
    Тормозные накладки проверяют на прочность и долговечность. Но, испытания на прочность – кратковременны, а на долговечность – длительны, так как их цель заключается в оценке эффективности работы тормозных накладок в процессе эксплуатации. Поэтому сокращение времени оценки долговечности тормозных накладок в эксплуатации является актуальным. В работе приведены результаты исследований долговечности тормозных накладок различных автотранспортных средств по результатам подконтрольной эксплуатации и метод ускоренной оценки долговечности тормозных накладок по результатам эксплуатации аналога.
    Źródło:
    Transport Problems; 2015, 10, 2; 75-81
    1896-0596
    2300-861X
    Pojawia się w:
    Transport Problems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Diagnostic capabilities of the WHOQOL-100 Questionnaire in Life’s Quality assessment for patients with coronary heart disease and atrial fibrillation
    Autorzy:
    Snezhitskiy, V. A.
    Surmach, M.Yu
    Boyko, S.L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1918923.pdf
    Data publikacji:
    2020-06-10
    Wydawca:
    Uniwersytet Medyczny w Białymstoku
    Tematy:
    Quality of life
    medico-sociological study
    diseases of the circulatory system
    medico-social rehabilitation
    effectiveness criteria.
    Opis:
    Introduction: Circulatory system diseases have high medical and social significance, therefore, the study of the quality of life associated with health for cardiological patients is of great practical importance. A large number of methods for assessing the quality of life are known, but not all methods have a methodological justification in cardiology and practical approbation. The aim of the work was to assess the clinical value of the WHOQOL-100 questionnaire for a group of patients with cardiovascular diseases. Materials and methods: The work methodology is presented by the analysis of RISC, Springer Link, Oxford University Press, New England Medical Journal, British Medical Journal, Elsevier SCOPUS database, EBSCO platform, as a result, the WHOQOL100 method was justified for use. Results: It has been established that the psychological field (the ratio of positive and negative emotions) and the sphere of social relations with an emphasis on practical social support are components of the quality of life, which can be considered as key vectors of social rehabilitation and criteria for the social effectiveness of treating patients with cardiovascular diseases. Conclusion: The international questionnaire WHOQOL-100 is recommended for use for cardiological patients with the subsequent analysis of the whole profile of quality of life.
    Źródło:
    Progress in Health Sciences; 2020, 10(1); 13-18
    2083-1617
    Pojawia się w:
    Progress in Health Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Bioelectrical activity of the amygdala of rats under conditions of chronic alcoholism and imbalance of nitric oxide
    Autorzy:
    Severynovska, O.
    Babicheva, V.
    Galinskiiy, A.
    Rudenko, A.
    Bogatyreva, O.
    Boyko, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/11259.pdf
    Data publikacji:
    2015
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Opis:
    Evaluation of biopotentials in the region of the amygdala of rats in the combined influence of alcohol and drugs, causing an imbalance of nitric oxide is described in this paper. Chronic alcoholism leads to structural morphological changes in the liver. A study of the amplitude of electrical activity showed that the electrical potential in the amygdala after 8 weeks chronic alcoholism was lower compared with normal rats. The frequency spectrum analysis showed decreased in the 2 times or more absolute spectral powers of all components. The relative spectral powers of its components: δ: θ: α: β was as a 2: 2: 2: 4. The use of sodium nitroprusside (donator of NO) together with the chronic consumption of ethanol reduces the effect of ethanol on low and high-frequence portion the performance of the bioelectrical activities spectrum in the amygdala. The use of non-selective blocker of NO-synthase – nitroarginine aggravated by the braking action of alcohol. The important role of nitric oxide in the development of adaptive-compensatory reactions of the damaged body is described. Our results may be useful to assess the contribution of NO in operation amygdala, conditions of chronic pathologies, and treatment of neuropsychiatric conditions, including diseases caused by alcohol abuse.
    Źródło:
    International Letters of Natural Sciences; 2015, 49
    2300-9675
    Pojawia się w:
    International Letters of Natural Sciences
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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