Informacja

Drogi użytkowniku, aplikacja do prawidłowego działania wymaga obsługi JavaScript. Proszę włącz obsługę JavaScript w Twojej przeglądarce.

English (EN)·Polski (PL)·Yкраїнський (UK)
Przejdź do strony domowej biblioteki Centralna Biblioteka Wojskowa Link otwiera się w nowym oknie Logo biblioteki Prolib Integro - strona głównaCentralna Biblioteka Wojskowa

Wyszukujesz frazę "ELM" wg kryterium: Temat

  Lista filtrów
Wyrównaj
    Wyświetlanie 1-18 z 18
    Tytuł:
    Investigation of Ophiostoma population infected elms in Poland
    Autorzy:
    Lakomy, P.
    Kwasna, H.
    Kuzminski, R.
    Napierala-Filipiak, A.
    Filipiak, M.
    Behnke, K.
    Behnke-Borowczyk, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/41115.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    investigation
    Ophiostoma
    fungi
    infected plant
    elm
    Ulmus
    Dutch elm disease
    Polska
    Opis:
    Dutch elm disease (DED) still occurs in Poland. Previous studies confirmed occurring O. ulmi and two subspecies of O. novo-ulmi: subsp. novo-ulmi and subsp. amerciana. In this study the population of Ophiostoma occurred in Poland was investigated. The disease incidence was investigated on elms growing in 39 locations. The pathogen’s mycelium was isolated from elm branches and twigs collected from 22 plots. The disease symptoms were noted in 5% to 35% trees. Fungi were identified based on the PCR amplification of the ITS 1/2 rDNA together with phylogenetic analysis of this region. Ophiostoma novo-ulmi was the only agent caused DED on Ulmus glabra, U. minor and U. laevis. There were no genetic diversity of O. novo-ulmi Polish population in analyzed ITS region. All kind of specific symptoms and disease intensity occurred independently on elm species and host age. Ulmus minor was infested most sever among the three elms species.
    Źródło:
    Dendrobiology; 2016, 76
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Changes in elm (Ulmus) populations of mid-western Poland during the past 35 years
    Autorzy:
    Napierala-Filipiak, A.
    Filipiak, M.
    Lakomy, P.
    Kuzminski, R.
    Gubanski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/41427.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    elm
    Ulmus glabra
    Ulmus minor
    Ulmus laevis
    Dutch elm disease
    alluvial habitat
    forest
    plant population
    Polska
    Opis:
    Three elm species are native to Poland: wych elm (Scots elm) (Ulmus glabra Huds.), field elm (U. minor Mill.), and European white elm (fluttering elm) (U. laevis Pall.). The epidemic of Dutch elm disease (DED) has led to a decrease in the popularity of elm cultivation. An analysis of forestry data was the first step in the assessment of elm resources. The area of forest stands where elms are dominant has more than doubled since 1978. Lowland alluvial forests rank first in regards to the number of elm localities per unit area of a given forest site type. While this site type is clearly preferred by elms, the majority of elm trees are actually scattered among sites of oak-hornbeam or closely related forests (of the alliance Carpinion betuli). Field research revealed a clear dominance of U. laevis, a species which in the past was predominantly located out of woodland and rarely cultivated. Data analysis indicated that all trees greater than 70 cm in diameter belonged to this species. Data from plots surveyed directly also suggest that the three elm species have slightly different habitat preferences. U. laevis prefers riparian habitats, although the major part of its resources is now on potential sites of oak-hornbeam or closely related forests. U. minor even more often than U. laevis occurs at less humid sites (mostly potential sites of oak-hornbeam or closely related forests), while U. glabra prefers moist slopes. In general, it appears that the impact of DED in the last 20–30 years has been smaller than in the preceding period, however, the disappearance of the disease has not been established. Undoubtedly, U. laevis is the elm species that is least impacted by DED
    Źródło:
    Dendrobiology; 2016, 76
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of 1,8-cineol on the biology and physiology of elm leaf beetle, Xanthogaleruca luteola (Col.: Chrysomelidae)
    Autorzy:
    Adibmoradi, G,
    Sendi, J.J.
    Tirgari, S.
    Imani, S.
    Razavi-Nematolahi, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/66604.pdf
    Data publikacji:
    2018
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    plant pest
    elm
    tree
    elm leaf beetle
    beetle
    Xanthogaleruca luteola
    Coleoptera
    Chrysomelidae
    1,8-cineol
    biology
    physiology
    biochemical parameter
    Opis:
    The effect of monoterpenoid 1,8-cineol on the toxicity and physiology of elm leaf beetle, Xanthogaleruca luteola Müller under laboratory conditions (26 ± 1°C, 65 ± 10% RH and 16L : 8D h) was investigated. Initially, LC30 and LC50 values of the constituent were estimated to be 23.5 ppm and 31.9 ppm for the last instar larvae after 48 h, respectively. Significant changes were observed in the values of relative growth rate (RGR), efficiency of conversion of ingested food (ECI), efficiency of conversion of digested food (ECD), approximate digestibility (AD) and consumption index (CI) between control and treated larvae with 1,8-cineol. The amounts of protein, glucose and urea decreased in the treated larvae in comparison with control. Similar findings were observed in the activities of alkaline phosphatase and lactate dehydrogenase while the activities of glutathione S-transferase and esterase significantly increased in the treated larvae using CDNB and α-naphtyl acetates as the substrates. Morphological and histological changes brought about by 1,8-cineol in the present study are indicative of growth inhibition targeting specific organs such as those of reproduction. We believe that 1,8-cineol can be considered as a safe and environmentally friendly compound.
    Źródło:
    Journal of Plant Protection Research; 2018, 58, 4
    1427-4345
    Pojawia się w:
    Journal of Plant Protection Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Above- and below-ground tree parameters and their development after modelling of thinning in young elm stands
    Autorzy:
    Šrámek, Martin
    Hurt, Václav
    Čermák, Jan
    Powiązania:
    https://bibliotekanauki.pl/articles/956995.pdf
    Data publikacji:
    2017
    Wydawca:
    Polska Akademia Nauk. Instytut Dendrologii PAN
    Tematy:
    elm
    leaf area
    absorptive root area
    biomass
    thinning
    Opis:
    During the last century almost two-thirds of all elms were lost due to the Dutch elm disease. Therefore, elms are an endangered species with a lasting lack of knowledge about ecosystem functions of elms in forest stands. The study describes several above- and below-ground tree parameters and their changes after simulation of thinning in one young forest stand with dominant Ulmus laevis Pall. in the Czech Republic. The distribution of the leaves was measured using the ‘cloud’ technique. The absorptive root area was measured with the aid of the modified earth impedance method to evaluate below-ground tree parameters. Using allometric equations, it was possible to calculate certain tree parameters of individual trees as well as the entire forest stand. The modelling of four thinning intensities (low, medium, high and very high) helped to establish the changes of these tree parameters after treatment. The leaf area index of the stand was 5.6, the absorptive root area index was 1.7 and the total biomass of foliage was 8.5 Mg ha–1 prior to the treatment. The absorptive root area amounted to 30% of the foliage area. The exponential models were developed to predict the above- and below-ground tree parameters. Under the different thinning intensities, the following were found: a negative correlation with the number of trees for the leaf area index, the foliage biomass and the absorptive root area index. This knowledge is important in the process of maintaining the presence of endangered elms in forest stands and in ecosystem services (e.g. carbon storage) throughout Europe.
    Źródło:
    Dendrobiology; 2017, 77; 77-90
    1641-1307
    Pojawia się w:
    Dendrobiology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of Emulsion Liquid Membrane Using Green Surfactant for Removing Phenol from Aqueous Solution: Extraction, Stability and Breakage Studies
    Autorzy:
    Mohammed, Ahmed A.
    Al-Khateeb, Rasha Waleed
    Powiązania:
    https://bibliotekanauki.pl/articles/2025802.pdf
    Data publikacji:
    2021
    Wydawca:
    Polskie Towarzystwo Inżynierii Ekologicznej
    Tematy:
    ELM
    emulsion liquid membrane
    phenol
    green surfactant
    stability
    extraction
    Opis:
    Emulsion Liquid Membrane (ELM) has garnered much attention, for its simple operation and high selectivity for the target solute. For an ELM process to be successful, emulsion stability and formulation of liquid membrane are the two main criteria. This study investigated an ELM formulation to identify a suitable green surfactant over the ordinary ones to reduce the utilization of chemicals. The stability of water-in-oil-in-water (w/o/w) was assessed in the following ways, by altering the concentrations of the egg yolk and NaOH, homogenizer speed, and emulsification time. To ascertain the favorable conditions for phenol extraction, several experiments were performed, adopting the batch process, which included many parameters, like the influence exerted by the pH of the external feed, concentration of surfactant, concentration of the internal phase, time of emulsification, homogenization speed and mixing time. Lower breakage and greater extraction efficiency (0.83% and 82.06%, respectively) were attained at 3.5 pH of the external feed, 4% (v/v) of the surfactant, 0.1 M of NaOH, 7 min of emulsification time, 5800 rpm of homogenizer speed and 3 minutes of mixing time. From the results of this study, egg yolk emerged as a good green surfactant. Thus, the ELM process holds promise as an effective technology for stripping phenol from aqueous solutions.
    Źródło:
    Journal of Ecological Engineering; 2022, 23, 1; 305-314
    2299-8993
    Pojawia się w:
    Journal of Ecological Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Extreme Learning Machine (ELM) do modelowania dwuwymiarowych nieliniowości w układach napędowych
    Appraisal of extreme Learning Machine Effective for 2d friction modeling Ocena efektywności techniki
    Autorzy:
    Jastrzębski, M.
    Kabziński, J.
    Wasiak, G.
    Zawiślak, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1817926.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    modelowanie tarcia
    regulacja adaptacyjna
    modelowanie rozmyte
    silnik liniowy
    Extreme Learning Machine
    ELM
    Opis:
    The aim of this article is to discuss suitability of extreme learning machine (ELM) approach for modeling multisource 2D friction for motion control purposes. The article describes a method of obtaining data used to modulate the resistance forces, taking into account specific to the case and machine external conditions. The features of multisource friction in mechatronic systems are defined, the main aspects of friction modeling by a Standard ELM are investigated and some modifications are proposed to make it more suitable for specific demands of the discussed task. This allows to formulate some general remarks concerning properties of ELM for function approximation.
    Źródło:
    Prace Naukowe Instytutu Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej. Studia i Materiały; 2015, 71, 35; 83--94
    1733-0718
    Pojawia się w:
    Prace Naukowe Instytutu Maszyn, Napędów i Pomiarów Elektrycznych Politechniki Wrocławskiej. Studia i Materiały
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Assessing the suitability of extreme learning machines (ELM) for groundwater level prediction
    Ocena zdolności ekstremalnych maszyn uczących (ELM) do przewidywania poziomu wód gruntowych
    Autorzy:
    Yadav, B.
    Ch, S.
    Mathur, S.
    Adamowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/293096.pdf
    Data publikacji:
    2017
    Wydawca:
    Instytut Technologiczno-Przyrodniczy
    Tematy:
    extreme learning machine (ELM)
    forecasting
    groundwater level
    support vector machine (SVM)
    water resource management
    maszyna uczenia ekstremalnego (ELM)
    maszyna wektorów nośnych SVM
    poziom wód gruntowych
    prognozowanie
    zarządzanie zasobami wodnymi
    Opis:
    Fluctuation of groundwater levels around the world is an important theme in hydrological research. Rising water demand, faulty irrigation practices, mismanagement of soil and uncontrolled exploitation of aquifers are some of the reasons why groundwater levels are fluctuating. In order to effectively manage groundwater resources, it is important to have accurate readings and forecasts of groundwater levels. Due to the uncertain and complex nature of groundwater systems, the development of soft computing techniques (data-driven models) in the field of hydrology has significant potential. This study employs two soft computing techniques, namely, extreme learning machine (ELM) and support vector machine (SVM) to forecast groundwater levels at two observation wells located in Canada. A monthly data set of eight years from 2006 to 2014 consisting of both hydrological and meteorological parameters (rainfall, temperature, evapotranspiration and groundwater level) was used for the comparative study of the models. These variables were used in various combinations for univariate and multivariate analysis of the models. The study demonstrates that the proposed ELM model has better forecasting ability compared to the SVM model for monthly groundwater level forecasting.
    Na całym świecie fluktuacje poziomów wód gruntowych stanowią ważny temat badań hydrologicznych. Rosnące potrzeby wodne, błędne praktyki irygacyjne, niewłaściwa gospodarka glebowa i niekontrolowana eksploatacja poziomów wodonośnych są powodami, dla których poziom wód gruntowych podlega fluktuacjom. Dla skutecznego zarządzania zasobami wód gruntowych istotne jest dysponowanie dokładnymi zapiskami i zdolność prognozowania poziomu tych wód. Rozwój technik komputerowych (modele wykorzystujące dane) w dziedzinie hydrologii ma istotny potencjał z powodu niepewnego i złożonego charakteru systemów wód gruntowych. W prezentowanych badaniach wykorzystano dwie techniki komputerowe: maszynę uczenia ekstremalnego (ELM) i maszynę wektorów nośnych (SVM – ang. support vector machine) do przewidywania poziomów wód gruntowych w dwóch studzienkach obserwacyjnych w Kanadzie. Do porównawczych badań modeli wykorzystano zestaw danych miesięcznych z ośmiu lat (2006–2014), składający się z danych hydrologicznych i meteorologicznych (opady, temperatura, ewapotranspiracja, poziom wody). Wymienione zmienne zastosowano w rozmaitych kombinacjach do jedno- i wieloparametrycznej analizy modeli. Wyniki dowodzą, że model ELM ma lepsze zdolności przewidywania miesięcznych poziomów wód gruntowych w porównaniu z modelem SVM.
    Źródło:
    Journal of Water and Land Development; 2017, 32; 103-112
    1429-7426
    2083-4535
    Pojawia się w:
    Journal of Water and Land Development
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Fault diagnosis of power transformer based on improved particle swarm optimization OS-ELM
    Autorzy:
    Li, Yuancheng
    Ma, Longqiang
    Powiązania:
    https://bibliotekanauki.pl/articles/140428.pdf
    Data publikacji:
    2019
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    power transformer
    fault diagnosis
    improved particle swarm optimization
    OS-ELM
    parameter optimization
    Opis:
    A transformer is an important part of power transmission and transformation equipment. Once a fault occurs, it may cause a large-scale power outage. The safety of the transformer is related to the safe and stable operation of the power system. Aiming at the problem that the diagnosis result of transformer fault diagnosis method is not ideal and the model is unstable, a transformer fault diagnosis model based on improved particle swarm optimization online sequence extreme learning machine (IPSO-OS-ELM) algorithm is proposed. The improved particle swarmoptimization algorithm is applied to the transformer fault diagnosis model based on the OS-ELM, and the problems of randomly selecting parameters in the hidden layer of the OS-ELM and its network output not stable enough, are solved by optimization. Finally, the effectiveness of the improved fault diagnosis model in improving the accuracy is verified by simulation experiments.
    Źródło:
    Archives of Electrical Engineering; 2019, 68, 1; 161-172
    1427-4221
    2300-2506
    Pojawia się w:
    Archives of Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Prognozowanie zawartości PM2,5 w powietrzu atmosferycznym przy użyciu sieci ELM
    PM2,5 particulate pollution forecasting using ELM
    Autorzy:
    Siwek, K.
    Baranowski, M.
    Grzywacz, T.
    Powiązania:
    https://bibliotekanauki.pl/articles/377680.pdf
    Data publikacji:
    2018
    Wydawca:
    Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
    Tematy:
    zanieczyszczenie powietrza atmosferycznego
    PM2,5
    sieci neuronowe
    Extreme Learning Machine
    ELM
    Opis:
    Artykuł przedstawia nowe podejście do predykcji zawartości pyłów zawieszonych w powietrzu atmosferycznym wykorzystujące sieć neuronową typu ELM (Extreme Learning Machine). Predykcja ta dotyczy obliczenia średniego poziomu zanieczyszczenia powietrza pyłem PM2,5 na warszawskim Ursynowie z jednodniowym wyprzedzeniem. Do zrozumienia wagi problemu zawarto zwięzły opis zagrożeń, jakie niesie za sobą zanieczyszczenie powietrza drobnym pyłem zawieszonym PM2,5. W pracy przedstawiono krótki opis sieci ELM oraz zaprezentowano uzyskane wyniki prognozy. Przeprowadzono analizę uzyskanych wyników. Omówiono zasadność prognozowania oraz wskazano możliwe środki zapobiegawcze i ochronne.
    The article presents a new approach to atmospheric dust prediction using an ELM (Extreme Learning Machine) neural network. This prediction concerns the calculation of the average level of PM2,5 air pollution in Warsaw's Ursynów one day ahead. To understand the significance of the problem, a brief description of the hazards posed by PM2,5 air pollution is included. The work presents a short description of the ELM network and presents the obtained forecast results. The analysis of the obtained results was carried out. The validity of forecasting was discussed and possible preventive and protective measures were indicated.
    Źródło:
    Poznan University of Technology Academic Journals. Electrical Engineering; 2018, 96; 307-318
    1897-0737
    Pojawia się w:
    Poznan University of Technology Academic Journals. Electrical Engineering
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cloud-based driver’s analysis: student project
    Autorzy:
    Franc, M
    Stelmach, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/397981.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Łódzka. Wydział Mikroelektroniki i Informatyki
    Tematy:
    cloud computing
    ELM 327
    OBD II
    vehicles monitoring
    driver's profile
    monitoring pojazdów
    profil kierowcy
    Opis:
    The goal of this article is to describe the early stage prototype of the system being able to constantly monitor and record car’s usage as well as to evaluate its driver’s performance. The solution is capable to gather information from various vehicle’s sub-systems through the OBD II protocol and utilizes a Windows Phone 8 device to transmit those data (together with a complementary GPS position) to the Windows Azure computing cloud in which the subsequent analysis takes place.
    Źródło:
    International Journal of Microelectronics and Computer Science; 2014, 5, 1; 1-4
    2080-8755
    2353-9607
    Pojawia się w:
    International Journal of Microelectronics and Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Two new localities of the zigzag elm sawfly Aproceros leucopoda Takeuchi, 1939 (Hymenoptera, Symphyta: Argidae) in Poland
    Autorzy:
    Borowski, Jerzy
    Powiązania:
    https://bibliotekanauki.pl/articles/1157995.pdf
    Data publikacji:
    2018
    Wydawca:
    Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
    Tematy:
    Aproceros leucopoda
    Argidae
    Hymenoptera
    Polska
    Symphyta
    bionomy
    geographical distribution
    new localities
    zigzag elm sawfly
    Opis:
    The paper presents information on two newly discovered localities of Aproceros leucopoda Takeuchi in Poland, namely in the northwestern part of the country: in Cedynia and nearby nature reserve “Bielinek”. Geographical distribution of that species and its bionomy are also outlined.
    Źródło:
    World Scientific News; 2018, 92, 2; 367-371
    2392-2192
    Pojawia się w:
    World Scientific News
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Evaluating the performance of Extreme Learning Machine technique for ore grade estimation
    Autorzy:
    Abuntori, Clara Akalanya
    Al-Hassan, Sulemana
    Mireku-Gyimah, Daniel
    Ziggah, Yao Yevenyo
    Powiązania:
    https://bibliotekanauki.pl/articles/1839059.pdf
    Data publikacji:
    2021
    Wydawca:
    Główny Instytut Górnictwa
    Tematy:
    extreme learning machine
    artificial intelligence
    artificial neural network
    grade estimation
    kriging
    ELM
    sztuczna inteligencja
    sztuczna sieć neuronowa
    Opis:
    Due to the complex geology of vein deposits and their erratic grade distributions, there is the tendency of overestimating or underestimating the ore grade. These estimated grade results determine the profitability of mining the ore deposit or otherwise. In this study, five Extreme Learning Machine (ELM) variants based on hard limit, sigmoid, triangular basis, sine and radial basis activation functions were applied to predict ore grade. The motive is that the activation function has been identified to play a key role in achieving optimum ELM performance. Therefore, assessing the extent of influence the activation functions will have on the final outputs from the ELM has some scientific value worth investigating. This study therefore applied ELMas ore grade estimator which is yet to be explored in the literature. The obtained results from the five ELM variants were analysed and compared with the state-of-the-art benchmark methods of Backpropagation Neural Network (BPNN) and Ordinary Kriging (OK). The statistical test results revealed that the ELM with sigmoid activation function (ELM-Sigmoid) was the best among all the other investigated methods (ELM-Hard limit, ELM-Triangular basis, ELM-Sine, ELM-Radial Basis, BPNN and OK). This is because the ELM-sigmoid produced the lowest MAE (0.0175), MSE (0.0005) and RMSE (0.0229) with highest R2 (91.93%) and R (95.88%) respectively. It was concluded that ELM-Sigmoid can be used by field practitioners as a reliable alternative ore grade estimation technique.
    Źródło:
    Journal of Sustainable Mining; 2021, 20, 2; 56-71
    2300-1364
    2300-3960
    Pojawia się w:
    Journal of Sustainable Mining
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Шолом як елемент захисного спорядження професійного воїна у Галицькій та Волинській землях у Х-ХІІ ст.: проблема «латинських шоломів»
    Helmet as an Element of Protective Equipment of a Professional Warrior in the Galician and Volyn Lands in the X‒XII Centuries: the Problem of ”Latin Helmets”
    Autorzy:
    Kozak, Mykoła
    Powiązania:
    https://bibliotekanauki.pl/articles/53705348.pdf
    Data publikacji:
    2021
    Wydawca:
    Uniwersytet Kazimierza Wielkiego w Bydgoszczy
    Tematy:
    helmet
    armor
    A Word about Igor's Expedition
    latin helmets
    norman helmets
    ełm
    zbroja
    Słowo o wyprawie Igora
    hełmy łacińskie
    hełmy normańskie
    Opis:
    W artykule omówiono znaleziska hełmów z X–XI wieku z terenu dawnej ziemi wołyńskiej i terenów sąsiednich. Uwagę zwrócono na odkrycie hełmu z XI wieku na obrzeżu wsi Nemija w obwodzie winnickim. Autor określa artefakt jako typowy europejski hełm tzw. typu normańskiego, którego analogie są znane z Europy Środkowej. Na podstawie szeregu materialnych analogii i źródeł ikonograficznych przyjęto założenie o powiązaniu typowych europejskich „hełmów normańskich” z „łacińskimi hełmami” wspomnianymi w Słowie o wyprawie Igora. Autor sugeruje, że na ziemiach galicyjskiej i wołyńskiej hełmy zachodnie stały się tanimi odpowiednikami bogato zdobionych wschodnich hełmów z „Чорної Могили”.
    The article considers the findings of helmets of the X–XI centuries from the territory of the former Volyn land and and neighboring areas. Attention was paidto the discovery of an11th-century helmet from the outskirts of the village Nemija in the Vinnytsia region. The author defines the artifact as a typical European helmet of the so-called “Norman type”, analogies of which are known from Central Europe. On the basis of a number of material analogies and iconographicsources, an assumption was made about the connection of typical European “norman helmets” with the “latin helmets” mentioned in the A Word about Igor, s Expedition. It has been suggested that western helmets in the Galician and Volyn lands became cheap analogues of eastern and expensively decorated “Чорної Могили” helmets.
    Źródło:
    Tabularium Historiae; 2021, 9; 71-85
    2543-8433
    Pojawia się w:
    Tabularium Historiae
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Struktura klonalna wiązu polnego (Ulmus minor Mill.) w Polsce
    Clonal structure of field elm (Ulmus minor Mill.) in Poland
    Autorzy:
    Chudzińska, M.
    Litkowiec, M.
    Pałucka, M.
    Pasławska, A.
    Lewandowski, A.
    Kozioł, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/979539.pdf
    Data publikacji:
    2019
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    dendrologia
    drzewa lesne
    wiaz polny
    Ulmus minor
    zmiennosc genetyczna
    markery genetyczne
    markery mikrosatelitarne
    clonality
    field elm
    genetic conservation
    genetic variation
    microsatellite markers
    Opis:
    Field elm (Ulmus minor Mill.) is distributed mainly across central and southern Europe. In Poland this species occurs in the lowlands and foothills, where it grows mainly in the floodplain forests along the rivers. U. minor exists in a variety of climatic and ecological conditions. It is capable to tolerate floods as well as drought. Currently, most populations of U. minor are small and fragmented resulting from human activity and Dutch elm disease. Moreover, in the natural field elm populations, vegetative propagation by root suckers or sprouting can be observed. All these factors may affect the level of genetic variation of U. minor populations in Poland. In the present study, we determined the level of genetic variation and the clonal diversity of twelve natural U. minor populations in Poland (407 individuals) using eight nuclear microsatellite loci. The obtained results indicate that the studied field elm populations are characterized by low level of genetic variation (He=0.382; Ho=0.555; A=7.0). Additionally, the high level of clonality in field elm populations was estimated. The clonality level of examined elm populations varied among them, and in some cases was very high. Out of the 407 individuals analysed for clonal structure only 61 multilocus genotypes were identified. Furthermore, only one genotype was identified in the three study populations of field elm, which means that in each of these populations all trees belong to one genet. The values of genotypic richness (R) were heterogeneous among populations, with mean 0.148. The knowledge on the genetic diversity and the clonal structure of U. minor populations is essential to make future decisions regarding conservation of genetic resources of this species in Poland.
    Źródło:
    Sylwan; 2019, 163, 10; 839-845
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    An optimized parallel implementation of non-iteratively trained recurrent neural networks
    Autorzy:
    El Zini, Julia
    Rizk, Yara
    Awad, Mariette
    Powiązania:
    https://bibliotekanauki.pl/articles/2031147.pdf
    Data publikacji:
    2021
    Wydawca:
    Społeczna Akademia Nauk w Łodzi. Polskie Towarzystwo Sieci Neuronowych
    Tematy:
    GPU implementation
    parallelization
    Recurrent Neural Network
    RNN
    Long-short Term Memory
    LSTM
    Gated Recurrent Unit
    GRU
    Extreme Learning Machines
    ELM
    non-iterative training
    Opis:
    Recurrent neural networks (RNN) have been successfully applied to various sequential decision-making tasks, natural language processing applications, and time-series predictions. Such networks are usually trained through back-propagation through time (BPTT) which is prohibitively expensive, especially when the length of the time dependencies and the number of hidden neurons increase. To reduce the training time, extreme learning machines (ELMs) have been recently applied to RNN training, reaching a 99% speedup on some applications. Due to its non-iterative nature, ELM training, when parallelized, has the potential to reach higher speedups than BPTT. In this work, we present Opt-PR-ELM, an optimized parallel RNN training algorithm based on ELM that takes advantage of the GPU shared memory and of parallel QR factorization algorithms to efficiently reach optimal solutions. The theoretical analysis of the proposed algorithm is presented on six RNN architectures, including LSTM and GRU, and its performance is empirically tested on ten time-series prediction applications. Opt- PR-ELM is shown to reach up to 461 times speedup over its sequential counterpart and to require up to 20x less time to train than parallel BPTT. Such high speedups over new generation CPUs are extremely crucial in real-time applications and IoT environments.
    Źródło:
    Journal of Artificial Intelligence and Soft Computing Research; 2021, 11, 1; 33-50
    2083-2567
    2449-6499
    Pojawia się w:
    Journal of Artificial Intelligence and Soft Computing Research
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wyniki wstępnych badań nad zmiennością genetyczną oraz zróżnicowaniem genetycznym między populacjami wiązu górskiego (Ulmus glabra Huds.) w Polsce
    Results of preliminary research on genetic variation and genetic differentiation between Wych elm populations (Ulmus glabra Huds.) in Poland
    Autorzy:
    Chudzińska, M.
    Pałucka, M.
    Pasławska, A.
    Litkowiec, M.
    Lewandowski, A.
    Kozioł, C.
    Powiązania:
    https://bibliotekanauki.pl/articles/985889.pdf
    Data publikacji:
    2018
    Wydawca:
    Polskie Towarzystwo Leśne
    Tematy:
    lesnictwo
    drzewa lesne
    wiaz gorski
    Ulmus glabra
    zmiennosc genetyczna
    markery mikrosatelitarne
    populacje roslin
    zroznicowanie genetyczne
    Polska
    zasoby genetyczne
    wych elm
    genetic variation
    microsatellite markers
    genetic resources
    ex situ conservation
    Opis:
    Wych elm (Ulmus glabra Huds.) is a rare scattered forest tree species in Poland. First studies on genetic diversity of the species in its natural range in Poland give a good basis for the management and conservation of its genetic resources. In the present study, we determined the level of genetic variation and genetic differentiation of seventeen natural Wych elm populations in Poland using nine nuclear microsatellite loci. The number of analyzed individuals was 601. The level of genetic diversity of Polish populations of Wych elm corresponded with the results of the previous studies on this species in Europe. The populations show quite low level of genetic diversity of the species on the population level and quite high diversity on the interpopulation level. A total of 119 alleles was found, with average number per locus (A) equal 6.0 and allelic richness at medium high level (AR10=4.7). Observed (Ho) and expected (He) heterozygosity reached 0.583 and 0.602 respectively. The genetic differentiation between Polish populations of Wych elm occurred at a low level (Fst=0.089). Inbreeding depression may occur in the next generations (Fis=0.031). Genetic diversity between Wych elm populations in Poland may be the result of unfavorable random processes related to the reduction of population size resulting from elm disease. To better understand the processes related to the genetic diversity of Wych elm populations, research on field elm variation should be undertaken. Such studies may give an answer to the potential influence of introgression between these species on the genetic structure of the Wych elm. Both in situ as well as ex situ conservation measures are highly recommended to preserve genetic resources of this valuable noble hardwood species in Polish landscape.
    Źródło:
    Sylwan; 2018, 162, 09; 727-736
    0039-7660
    Pojawia się w:
    Sylwan
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Naziemne i powietrzne rozpoznanie radiolokacyjne
    Autorzy:
    Grelewski, Paweł.
    Powiązania:
    Przegląd Sił Zbrojnych 2020, nr 5, s. 18-23
    Data publikacji:
    2020
    Tematy:
    Wojska radiotechniczne sił powietrznych
    Działania (wojsk.)
    Organizacja
    Sprzęt wojskowy
    Rozpoznanie radiolokacyjne
    Rozpoznanie naziemne
    Rozpoznanie powietrzne
    System rozpoznania powietrznego
    AWACS (system)
    ELM-2083 (system)
    Artykuł z czasopisma wojskowego
    Opis:
    Artykuł przybliża działania wojsk radiotechnicznych zajmujących się rozpoznaniem radiolokacyjnym na potrzeby systemu obrony powietrznej. Autor omawia organizację rozpoznania radiolokacyjnego naziemnego oraz wykorzystywany sprzęt i jego możliwości. Opisuje systemy wykorzystywane do rozpoznania powietrznego – system wczesnego wykrywania i naprowadzania AWACS oraz radar ELM-2083 zainstalowany na aerostacie. Przedstawia także potrzeby sprzętowe i modernizacyjne wojsk radiotechnicznych.
    Fotografie.
    Dostawca treści:
    Bibliografia CBW
    Artykuł
    Tytuł:
    Wzrost szczepów wiązu górskiego (Ulmus glabra Huds.) w archiwum klonów w Nadleśnictwie Bielsk
    Growth of Ulmus glabra Huds. grafts in the clone archive in Bielsk Forest District
    Autorzy:
    Mioduszewski, S.
    Korczyk, A.F.
    Powiązania:
    https://bibliotekanauki.pl/articles/1339852.pdf
    Data publikacji:
    2013
    Wydawca:
    Instytut Badawczy Leśnictwa
    Tematy:
    lesnictwo
    drzewa lesne
    ochrona zasobow genowych
    wiaz gorski
    Ulmus glabra
    rozmnazanie roslin
    rozmnazanie wegetatywne
    klony
    wzrost roslin
    jakosc hodowlana
    Nadlesnictwo Bielsk
    vegetative progeny
    clone archive
    Ulmus glabra Huds.
    Wych elm
    Opis:
    Vegetative progeny were obtained from 46 elms (Ulmus glabra Huds.) by grafting. These grafted trees were planted in 2009 in a clone archive in forest plot 264j in the Bielsk Forest District. After one year of growth, elm clone survival ranged from 38% to 100% (89% on average). Although all clones were of similar age and were grown under similar conditions, their average height was highly variable and ranged from 99.0 cm (clone no. 9473z) to 186.6 cm (clone no. 9645z), while average root collar diameter ranged from 8.4mm (clone no. 9473z) to 18.0 mm (clone no. 9645z). There were large differences crown architectural among the different clones, and variation in average shape of the crown was high (from 2.6 in clone no. 9655 to 3.8 in clone no. 9446z). Index breeding values determined on the standardized data for height, root collar diameter, crown shape and survival, ranged from -0.71 (clone no. 9473z) to 0.61 (clone no. 9645z). Clones from Czerwony Dwór reached a better breeding value (0.17) than clones from Gołdap (-0.0266), and variation in their average breeding values was high (0.197).
    Źródło:
    Leśne Prace Badawcze; 2013, 74, 2; 149-159
    1732-9442
    2082-8926
    Pojawia się w:
    Leśne Prace Badawcze
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-18 z 18

      Ta witryna wykorzystuje pliki cookies do przechowywania informacji na Twoim komputerze. Pliki cookies stosujemy w celu świadczenia usług na najwyższym poziomie, w tym w sposób dostosowany do indywidualnych potrzeb. Korzystanie z witryny bez zmiany ustawień dotyczących cookies oznacza, że będą one zamieszczane w Twoim komputerze. W każdym momencie możesz dokonać zmiany ustawień dotyczących cookies