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    Wyświetlanie 1-9 z 9
    Tytuł:
    A mathematical model of the left ventricle surface and a program for visualization and analysis of cardiac ventricle functioning
    Autorzy:
    Hoser, P.
    Tematy:
    cardiac diagnostics
    pattern recognition
    contour detection
    expert system
    image processing
    computer graphics
    Pokaż więcej
    Wydawca:
    Politechnika Gdańska
    Powiązania:
    https://bibliotekanauki.pl/articles/1965795.pdf  Link otwiera się w nowym oknie
    Opis:
    The left heart chamber's contractibility is an important part of heart diagnostics. Ultrasonographic pictures are very often used as the imaging method, as they are widely available, inexpensive and non-invasive. However, ultrasonographic pictures are very unclear, blurred and noisy, and thus very difficult for automatic analysis. To obtain a quick and useful analysis of ventricle performance, a special mathematical model has been created. The model can be used in contour detection, visualization of the heart's motion and even in automatic surface analysis. We hope that in the future such programs could be incorporated into a general medical expert system.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Komputerowe wspomaganie układania planu zajęć oparte na wybranych metodach heurystycznych
    Computer-aided class timetable planning based on selected heuristic methods
    Autorzy:
    Hoser, P.
    Ochnio, L.
    Wydawca:
    Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
    Powiązania:
    https://bibliotekanauki.pl/articles/28766460.pdf  Link otwiera się w nowym oknie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Developing automatic recognition system of drill wear in standard laminated chipboard drilling process
    Autorzy:
    Kurek, J.
    Kruk, M.
    Osowski, S.
    Hoser, P.
    Wieczorek, G.
    Jegorowa, A.
    Górski, J.
    Wilkowski, J.
    Śmietańska, K.
    Kossakowska, J.
    Tematy:
    diagnostic expert systems
    neural networks
    wavelet packets
    wear monitoring
    diagnostyczny system ekspercki
    sieci neuronowe
    pakiety falkowe
    monitorowanie zużycia
    Pokaż więcej
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Powiązania:
    https://bibliotekanauki.pl/articles/200766.pdf  Link otwiera się w nowym oknie
    Opis:
    The paper presents an automatic approach to recognition of the drill condition in a standard laminated chipboard drilling process. The state of the drill is classified into two classes: “useful” (sharp enough) and “useless” (worn out). The case “useless” indicates symptoms of excessive drill wear, unsatisfactory from the point of view of furniture processing quality. On the other hand the “useful” state identifies tools which are still able to drill holes acceptable due to the required processing quality. The main problem in this task is to choose an appropriate set of diagnostic features (variables), based on which the recognition of drill state (“useful” versus “useless”) can be made. The features have been generated based on 5 registered signals: feed force, cutting torque, noise, vibration and acoustic emission. Different statistical parameters describing these signals and also their Fourier and wavelet representations have been used for defining the features. Sequential feature selection is applied to detect the most class discriminative set of features. The final step of recognition is done by using three types of classifiers, including support vector machine, ensemble of decision trees and random forest. Six standard drills of 12 mm diameter with tungsten carbide tips were used in experiments. The results have confirmed good quality of the proposed diagnostic system.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Macroscopic and Microscopic Study of a CePdIn Compound
    Autorzy:
    Klicpera, M.
    Javorský, P.
    Puente-Orench, I.
    Hoser, A.
    Tematy:
    61.05.F-
    71.27.+a
    72.15.Eb
    Pokaż więcej
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Powiązania:
    https://bibliotekanauki.pl/articles/1030269.pdf  Link otwiera się w nowym oknie
    Opis:
    The magnetization and electrical resistivity measurements on a CePdIn single crystal as well as its preparation and structural characterization are presented. The negative paramagnetic Curie temperatures indicate antiferromagnetic ground state, the anisotropy of the paramagnetic Curie temperature amounts 22.7 K. No ferromagnetic correlations were indicated. Powder neutron diffraction experiment performed at temperatures down to 0.4 K did not lead to observation of any magnetic peak in diffraction patterns. We estimate the magnetic moment on Ce atoms to be significantly lower than 0.5 μ_{B}. The temperature development of lattice parameters documents the standard thermal expansion of the unit cell; no signs of structural phase transition were observed.
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Neutron diffraction studies of NdNi_{5}Sn compound
    Autorzy:
    Hoser, Andreas
    Penc, Bogusław
    Szytuła, Andrzej
    Baran, Stanisław
    Romaka, Lyubov P.
    Opis:
    The neutron powder diffraction measurements of the NdNi5Sn compound have been performed. The obtained results indicate that this compound crystallizes in a hexagonal CeNi_{5}Sn-type crystal structure described by the space group P63/mmc. The parameters of the crystal structure at 1.55 and 14.8 K are determined. In contradiction to the magnetic data the long-range magnetic ordering was not detected up to 1.55 K.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
    Tytuł:
    Wykorzystanie możliwości nowoczesnej diagnostyki ultrasonograficznej w rozpoznawaniu powikłań przezskórnej biopsji nerki u dzieci
    The application of modern ultrasound diagnostic possibilities in identification of percutaneous kidney biopsy complications in children
    Autorzy:
    Adamczyk, P.
    Trembecka-Dubel, E.
    Bjanid, O.
    Legaszewski, T.
    Hoser, K.
    Morawiec-Knysak, A.
    Ziora, K.
    Szczepanska, M.
    Wydawca:
    Instytut Medycyny Wsi
    Powiązania:
    https://bibliotekanauki.pl/articles/3878.pdf  Link otwiera się w nowym oknie
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    BEST-CSP benchmark study of polymorphs I and II of sulfamerazine and the perils of polytype polymorphs
    Autorzy:
    Krzeszczakowska, Joanna
    Sun, Guangxu
    Bernardes, Carlos E. S.
    Arhangelskis, Mihails
    List, Alexander
    Rodrigues, Rute I. S.
    Mladineo, Bruno
    Yang, Zhuocen
    Hoser, Anna
    Fulem, Michal
    Šnajdr, Jiří
    Dračínský, Martin
    Civalleri, Bartolomeo
    Wood, William P.
    Červinka, Ctirad
    Bučar, Dejan-Krešimir
    Whitfield, Pamela S.
    Bartůňková, Erika
    Hoja, Johannes
    Olehovics, Edgar
    Lončarić, Ivor
    Braun, Doris E.
    Sarraguça, Mafalda
    Rietveld, Ivo B.
    Boese, A. Daniel
    Goncharova, Natalia
    Nyman, Jonas
    Price, Sarah L.
    Gryl, Marlena
    Geronia II, Reynaldo
    Russo, Luca
    Raimondo, Mattia
    Tinnemans, Paul
    Salvalaglio, Matteo
    Butkiewicz, Helena
    de Ronde, Erik
    Firaha, Dzmitry
    Štejfa, Vojtěch
    Couvrat, Nicolas
    Donà, Lorenzo
    Zhang, Yizu
    Opis:
    We report the outcome of an interdisciplinary investigation, by the BEST-CSP network, of the kinetically favored form I and the low-temperature stable form II polymorphs of the drug sulfamerazine (SMZ). Form II can be reproducibly obtained by slurrying in acetonitrile(MeCN)/water at room temperature, though seeding with form II significantly speeds up the conversion. New structure determinations have been obtained for both forms over a wide temperature range, with both single crystal and powder X-ray diffraction methods. Room temperature FT-IR and solid-state $^{13}C$ NMR spectra are provided. The enantiotropic but practically irreversible crystal-to-crystal transition from form II to form I is observed at temperatures ranging from 150 to 170 °C in various differential scanning calorimetry (DSC) experiments, depending on sample and heating rate. The enthalpy of transition at 150 °C is measured as $Δ_{trs}H_{m}(II → I) = 3.15 ± 0.12 kJ mol^{–1}$. The differences in the heat capacities mean that the DSC measured enthalpies vary with the onset temperature by about $0.55 kJ mol^{–1}$ over the range of heating rates commonly used in DSC experiments. Attempts to find the solvent-mediated transition temperature were complicated by observing that slurrying experiments in both methanol and $MeCN/H_{2}O$ above 50 °C produce a new, late-identified polymorph, sulfamerazine form V, which is closely related to form I but with an alternative packing of the double layers, i.e., is a polytype polymorph. Forms I and V are only easily distinguishable by high-quality powder X-ray diffraction. Form V appears to be marginally more stable than form I across the temperature range studied. The experimental data, including heat capacities and thermal expansion rates, are used to test a wide range of assumptions and energy models for calculating free energy differences between these polymorphs, illustrating the challenges in computationally modeling the thermodynamic transition temperature between form I and II. The implications of the discovery of form V on establishing the phase diagram of sulfamerazine are discussed.
    Dostawca treści:
    Repozytorium Uniwersytetu Jagiellońskiego
    Artykuł
      Wyświetlanie 1-9 z 9

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