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Wyszukujesz frazę "forest machines" wg kryterium: Temat

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    Wyświetlanie 1-5 z 5
    Tytuł:
    Reliability analysis of forest machines due to FMEA method
    Autorzy:
    Ťavoda, P.
    Kováč, J.
    Łukaszczyk, Z. Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/409738.pdf
    Data publikacji:
    2018
    Wydawca:
    STE GROUP
    Tematy:
    reliability
    FMEA method
    forest machines
    maintenance
    Opis:
    The article deals with the research of operational reliability of forest felling machines with the method FMEA (Failure Mode and Effect Analysis) and its implementation for observed machines in the organization. Forwarders 810D by John Deere were chosen for this research. The research was realized in real operational conditions. Application of the FMEA method allows flexibility in case of unexpected situations and optimization of human potential abilities. FMEA tool is a tool preventing outages operational reliability and preventive tool for ensuring the maintenance of facilities. This paper explores and verifies the operational reliability theory in practical real-world conditions, resulting in a reduction in operating (variable) costs, minimization of failures and readiness and increased performance of observed machines.
    Źródło:
    Management Systems in Production Engineering; 2018, 4 (26); 200-206
    2299-0461
    Pojawia się w:
    Management Systems in Production Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ zrywki drewna forwarderem Ponsse Gazelle na zwięzłość gleby
    Impact of Ponsse Gazelle forwarder logging on soil compactness
    Autorzy:
    Pszenny, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/979098.pdf
    Data publikacji:
    2020
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    soil disturbance
    soil compactness
    soil moisture content
    forest machines
    Opis:
    The use of forwarders during forest work enabled a significant increase in the efficiency of timber transport from the harvesting site to the place of temporary storage. Due to their efficiency and greater safety compared to older types of machines, a further increase in the use of these machines in Polish forests seems inevitable. The research was carried out in the Gidle Forest District (southern Poland). Measurements were carried out on 5 logging sites, where the wood transportation was carried out using a modified Ponsse Gazelle forwarder. These plots differed one from the other in the type of habitat as well as soil type and moisture. During research 7 transects were established. They were 30 m long each. On each transect changes of soil compactness were determined. The measurement was made before and after each 20 forwader passes. Soil penetration resistance was measured using the Ejkelkamp hand penetrometer. The analyses focused on left rut, right rut and in the middle between wheel ruts. On the examined sites soil samples were taken to determine the moisture changes associated with the machine passes. The statistically significant differences were found in the rate of soil compactness increase depending on the type of soil, and forest stand. Also statistically significant differences were observed in soil moisture between soil in skid trails and area without machine passes.
    Źródło:
    Sylwan; 2020, 164, 08; 643-650
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Technika pomiaru oporów roboczych sadzarki szkółkarskiej typ M
    Technique of measuring the operating resistance of nursery planter type M
    Autorzy:
    Słowiński, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1013060.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    opor roboczy
    sadzarka typu M
    redlice talerzowe
    szkolki lesne
    sadzarki
    lesnictwo
    pomiary
    forest nursery machines
    planter
    machine resistance
    disc coulter
    Opis:
    The paper presents the results of the research on resistance of a disc coulter in nursery planter type M. Resistance of the working elements of transplanting machines were measured using a device enabling measurement of the force acting against a working element in two directions: horizontally (travel) and vertically. The measurements were performed for four different soil compactness and three moisture variants. Non−linear estimation performed in Statistica 6 software was applied to build a model of the relationship between horizontal and vertical resistance of the working element and soil compactness and moisture.
    Źródło:
    Sylwan; 2008, 152, 12; 29-35
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessment of Approaches for the Extraction of Building Footprints from Pléiades Images
    Autorzy:
    Taha, Lamyaa Gamal El-deen
    Ibrahim, Rania Elsayed
    Powiązania:
    https://bibliotekanauki.pl/articles/1837996.pdf
    Data publikacji:
    2021
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    ensemble classifiers
    machine learning
    random forest
    maximum likelihood
    support vector machines
    backpropagation
    image classification
    Opis:
    The Marina area represents an official new gateway of entry to Egypt and the development of infrastructure is proceeding rapidly in this region. The objective of this research is to obtain building data by means of automated extraction from Pléiades satellite images. This is due to the need for efficient mapping and updating of geodatabases for urban planning and touristic development. It compares the performance of random forest algorithm to other classifiers like maximum likelihood, support vector machines, and backpropagation neural networks over the well-organized buildings which appeared in the satellite images. Images were subsequently classified into two classes: buildings and non-buildings. In addition, basic morphological operations such as opening and closing were used to enhance the smoothness and connectedness of the classified imagery. The overall accuracy for random forest, maximum likelihood, support vector machines, and backpropagation were 97%, 95%, 93% and 92% respectively. It was found that random forest was the best option, followed by maximum likelihood, while the least effective was the backpropagation neural network. The completeness and correctness of the detected buildings were evaluated. Experiments confirmed that the four classification methods can effectively and accurately detect 100% of buildings from very high-resolution images. It is encouraged to use machine learning algorithms for object detection and extraction from very high-resolution images.
    Źródło:
    Geomatics and Environmental Engineering; 2021, 15, 4; 101-116
    1898-1135
    Pojawia się w:
    Geomatics and Environmental Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analiza wydajności wywozu drewna ze zrębu w zależności od rodzaju środka transportu
    Performance analysis of export of wood in relation from the kind of transport
    Autorzy:
    Grieger, A.
    Sędłak, P.
    Stawicki, T.
    Lewaszkiewicz, Ł.
    Powiązania:
    https://bibliotekanauki.pl/articles/314955.pdf
    Data publikacji:
    2016
    Wydawca:
    Instytut Naukowo-Wydawniczy "SPATIUM"
    Tematy:
    transport leśny
    maszyny do prac leśnych
    Forwarder V890.3
    ciągnik leśny
    organizacja pracy pojazdu
    efektywność pracy maszyn
    transportation of forest
    forestry machines
    forest tractor
    vehicle work organization
    operating efficiency
    Opis:
    Zachodzące zmiany w wyposażeniu przedsiębiorstw świadczących usługi leśne wymagają monitorowania zarówno parametrów technicznych, możliwości technologicznych, ale przede wszystkim przebudowy organizacji pracy. Producenci przekazują użytkownikom informacje o nowych rozwiązaniach w bardzo ograniczonym zakresie. Specyfika miejsca pracy maszyny wymaga dodatkowego opisu, który wspomagałby proces zarządzania w pracach leśnych. Przeprowadzone badania wskazują tylko na wycinek problemu, z którym styka się właściciel przedsiębiorstwa w zakresie efektów pracy maszyny. Ustalono, że najbardziej wydajne są maszyny typu forwarder, mniejszym stopniu zestawy ciągnikowe ze specjalistyczną przyczepą oraz skider.
    The changes in the equipment of enterprises providing forestry services need to monitor both the technical parameters, technological possibilities, but above all the reconstruction work organization. Manufacturers shall provide users with information about new developments in a very limited extent. The specificity of jobs the machine requires an additional description that the process of assistance to management in forestry work. The study indicates only clipping the problem faced by the owner of the company with respect to the effects of the machine. It was agreed that the most efficient machines are the type forwarder, less specialized kits for tractor with a trailer and a skidder.
    Źródło:
    Autobusy : technika, eksploatacja, systemy transportowe; 2016, 17, 6; 574-577
    1509-5878
    2450-7725
    Pojawia się w:
    Autobusy : technika, eksploatacja, systemy transportowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-5 z 5

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