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    Wyświetlanie 1-4 z 4
    Tytuł:
    A Genre Analysis of Research Article Abstracts in Linguistics and Engineering: a Cross Disciplinary Study Based on a Contrastive Analysis of Micro Structures
    Analiza gatunkowa abstraktów artykułów naukowych z dziedziny językoznawstwa i inżynierii: badanie interdyscyplinarne na podstawie analizy kontrastywnej mikrostruktur
    Autorzy:
    Galaidin, Andrii
    Powiązania:
    https://bibliotekanauki.pl/articles/1853766.pdf
    Data publikacji:
    2021
    Wydawca:
    Państwowa Wyższa Szkoła Zawodowa w Chełmie
    Tematy:
    Genre analysis
    research article abstracts
    linguistics
    engineering
    micro structures
    analiza gatunkowa
    abstrakty artykułów naukowych
    językoznawstwo
    inżynieria
    mikrostruktury
    Opis:
    The signicance of a research article abstract has recently turned the focus of linguistics on the Genre analysis of abstract articles. Taking into account this wide research topic, this study aims at investigating the micro structures in the linguistics and engineering abstracts. In the previous studies, this comparison has not been addressed by the researches, hence the present study aims to ll in the gap. The corpus contained 30 abstracts, 15 of linguistics and 15 of engineering. The micro analysis was carried out on the basis of Swales and Feak's (2009) model. The results revealed that there was no very signicant dierence between the linguistics and engineering abstracts at the micro level. This study is deemed to be benecial for the researchers as it provides a framework of analyzing two dierent disciplines in terms of their abstracts.
    Źródło:
    Language. Culture. Politics. International Journal; 2021, 1, 1; 47-56
    2450-3576
    2719-3217
    Pojawia się w:
    Language. Culture. Politics. International Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Porównanie sposobów określania składu gatunkowego drzewostanów obrębu leśnego
    Comparison of the methods of determining the tree species composition of stands in a forest district
    Autorzy:
    Bruchwald, A.
    Miścicki, S.
    Dmyterko, E.
    Stereńczak, K.
    Wysocka-Fijorek, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/985705.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    sklad gatunkowy
    struktura gatunkowa
    metody badan
    analiza porownawcza
    obreby lesne
    basal area
    cover
    diversity
    sample plot
    survey
    volume
    Opis:
    In Polish forest management planning, the species composition of stands in a forest district is established by adding up the volumes of tree species from individual forest stands. These volumes are calculated according to the estimated share of species cover and the estimated volume of the entire forest stand. The species structure of stands in a forest district, established on the basis of such a method, may be different than that obtained from sample plots. The aim of the study was to compare three ways of determining the tree species structure of stands in a forest district. In Method 1, the species composition was estimated on the basis of the volume of trees measured on sample plots as part of a periodic forest inventory based on stratified sampling. The same data were used in Method 2, but the share of species was calculated on the basis of the basal area. In Method 3, the species structure was estimated according to the volume of trees estimated in each forest stand based on the cover of a given species. The empirical material was collected in 53 forest districts. In method 1 and 2, data from an average of 740 sample plots within the forest district were used. In Method 3, data from the forest stand descriptions contained in the database of the State Forests Information System were used. For each forest district, species composition was calculated, including 6 tree species and 8 groups of tree species. For all forest districts, the average shares of individual species and groups of species differed, depending on the applied method (tab. 1). In case of methods 1 and 2, the biggest difference was found for pine – the most numerous species – but it was also big for less numerous ones: birch and oak (tab. 2). In case of methods 1 and 3, the biggest difference in share was also found for pine (tab. 3). The greater the species diversity of a forest district (determined according to Simpson’s index of diversity), the greater was the average difference in the estimated share of an individual species (figs. 1 and 2). The method of determining the species structure in a forest district used in forest management practice nowadays was considered insufficient. It was proposed to establish it in larger units (subclass, age class, forest district) only according to the volume of trees measured on the sample plots (without rounding and ‘switching’ of species), using the stratified sampling method.
    Źródło:
    Sylwan; 2019, 163, 05; 365-372
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Monitoring rysia euroazjatyckiego (Lynx lynx) z użyciem fotopułapek na terenie Gorczańskiego Parku Narodowego - wskazania do ochrony gatunku w oparciu o wyniki z okresu 2014-2018
    The monitoring of Eurasian lynx (Lynx lynx) in the Gorce National Park (Carpathians, Poland) with the use of camera trapping between 2014-2018: recommendations on the future species protection
    Autorzy:
    Czarnota, P.
    Loch, J.
    Armatys, P.
    Wierzbowska, I.
    Matysek, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/882057.pdf
    Data publikacji:
    2019
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Leśny Zakład Doświadczalny. Centrum Edukacji Przyrodniczo-Leśnej w Rogowie
    Tematy:
    parki narodowe
    Gorczanski Park Narodowy
    drapiezniki
    rys euroazjatycki
    Lynx lynx
    wystepowanie
    populacje zwierzat
    monitoring
    fotopulapki
    analiza czasowo-przestrzenna
    ochrona gatunkowa
    Źródło:
    Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej; 2019, 21, 2[59]
    1509-1414
    Pojawia się w:
    Studia i Materiały Centrum Edukacji Przyrodniczo-Leśnej
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Oszacowanie różnorodności gatunkowej drzewostanów z wykorzystaniem ich reflektancji
    Estimation of tree species diversity of forest stands based on their spectral reflectance
    Autorzy:
    Kotlarz, J.
    Kubiak, K.
    Kacprzak, M.
    Czapski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/989447.pdf
    Data publikacji:
    2016
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    fotogrametria
    drzewostany
    roznorodnosc gatunkowa
    drzewa lesne
    reflektancja
    zdjecia lotnicze
    zdjecia wielospektralne
    analiza skladowych glownych
    remote sensing
    pca
    aerial environmental monitoring
    quercus robur
    canopy
    Opis:
    Evaluation of the forest landscape diversity was investigated based on the multispectral aerial images using iterative Principal Component Analysis (PCA) methodology. In 2014, we carried out several photogrammetric flights over the experimental plots establish in the Krotoszyn Plateau (central Poland) documenting the vegetation cycle of forest stands dominated by oaks. Aerial photos of the spatial resolution about 25 cm of forest area in Karczma Borowa Forest District in the range of visible light (460−650 nm) and near infrared (700−930 nm) were collected by multispectral Quercus 6 platform placed on the aircraft. The aim of the study was to evaluate the diversity of forest vegetation cover using remote sensing data based on spectral signatures of plants without complete classification of fractional vegetation cover and species identification in the field. Recursive PCA on data collection from the multispectral images helped to determine with the semi−automatic mode the number of land cover classes, including the classes of vegetation. Based on the radiometric data, the separation of inorganic matter from vegetation and diversity indicators of forest stands on the image area were evaluated. With the PCA method, along the most volatile vectors, the first division into land cover classes of vegetation was conducted. As a result of the first iteration of PCA, three classes of vegetation: deciduous trees, conifers and forest undergrowth was determined. In the second iteration, classes of forest vegetation were separated and interpreted as the area dominated by a single species of tree or shrub. The second iteration divided the deciduous plant image area in plots dominated by English oak stands with an admixture of birch and red oak. Based on the number of pixels in classes representing individual plant species, Shannon−Wiener (H) and Simpson (D) diversity indices were determined. By described methodology, it was found that the differences between the H and D indices for the imagery area after the first and second PCA iteration were small. The relevance of performing successive iterations of PCA analysis, and thus the full identification of species, in the context of diversity calculation should be the subject of further study.
    Źródło:
    Sylwan; 2016, 160, 12; 1036-1045
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-4 z 4

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