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    Tytuł:
    Filtr aktywny wyśszych harmonicznych prądu sieciowego w napędzie elektrycznym z przemiennikiem częstotliwości
    Active filter of higher harmonics in power grid current of electrical drive with frequency converter
    Autorzy:
    Janik, T.
    Kapinos, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1373782.pdf
    Data publikacji:
    2009
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
    Tematy:
    filtr aktywny
    wyższe harmoniczne prądu
    napęd elektryczny
    sieć zasilająca
    układ zasilania
    Opis:
    In the paper a method of eliminating of higher harmonics in the mains current using an active filter is presented. The current harmonics can be generate by nonlinear loads as a DC motor with a controlled rectifier, an induction motor fed from a PWM inverter and so an. The active filter that is proposed enables obtaining a sinusoidal waveform of a mains current at any changes of the load current. Results of investigations are presented involving waveforms of the nonlinear load current, the active filter current and she power grid current.
    Źródło:
    Maszyny Elektryczne: zeszyty problemowe; 2009, 82; 45-48
    0239-3646
    2084-5618
    Pojawia się w:
    Maszyny Elektryczne: zeszyty problemowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Managing volunteer engagement in reference to empirical research
    Autorzy:
    Janik, T.
    Beck-Krala, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/108352.pdf
    Data publikacji:
    2018
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    engagement
    commitment
    involvement
    voluntary work
    non-profit organizations
    leading a team of volunteers
    Opis:
    Engagement and volunteerism are important issues in the area of Human Resource Management. Organized in Krakow in 2016, World Youth Days (WYD) exposed many phenomena related to these areas, creating an interesting research field. This paper identifies and explains the terminology and concepts existing in the literature that concern engagement and characterizes the volunteering issue in the context of Polish social reality. The article also contains selected findings of a survey conducted among World Youth Days volunteers. Based on it, this paper shows the characteristics of selected relationships and the social and demographic conditions of volunteerism in that specific research perspective. Research has shown that, within the volunteers’ groups, it is possible to use professional and modern management methods. Our findings lead to a set of suggestions for team leaders that have the potential of creating a higher level of engagement among participants and may enable better organizational management.
    Źródło:
    Managerial Economics; 2018, 19, 1; 75-88
    1898-1143
    Pojawia się w:
    Managerial Economics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Wpływ poziomu wytwarzania betonu na jakość konstrukcji masywnych
    Autorzy:
    Janik, T.
    Konwinski, J.
    Konwinski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/343143.pdf
    Data publikacji:
    2011
    Wydawca:
    Stowarzyszenie Producentów Cementu
    Tematy:
    budowla betonowa
    beton masywny
    estakada
    konstrukcja żelbetowa
    skład mieszanki
    technologia betonowania
    harmonogram robót
    Źródło:
    Budownictwo, Technologie, Architektura; 2011, 2; 48-51
    1644-745X
    Pojawia się w:
    Budownictwo, Technologie, Architektura
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Seismic structure of the lithosphere between the East European Craton and the Carpathians from the net of CELEBRATION 2000 profiles in SE Poland
    Autorzy:
    Janik, T.
    Grad, M.
    Guterch, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/2059121.pdf
    Data publikacji:
    2009
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    lithospheric structure
    East European Craton
    Trans-European Suture Zone
    Carpathians
    deep seismic soundings
    Moho map
    Opis:
    During the CELEBRATION 2000 experiment, the area of SE Poland was investigated by relatively dense system of deep seismic sounding profiles. Apart from five main profiles CEL01–CEL05, eight additional profiles were executed between the edge of the East European Craton and the Carphatians: CEL06, CEL11, CEL12, CEL13, CEL14, CEL21, CEL22 and CEL23. In this paper, we present results of modelling of refracted and reflected waves with use of a 2D ray tracing technique. All 13 profiles were jointly inter reted with verification of models at crossing points, and a quasi 3D model of the crust and upper mantle was developed. The obtained P-wave velocity models of the crust and uppermost mantle are very complex and show a differentiation of the seismic structure for tectonic units in SE Poland. The depth of the Moho discontinuity in the investigated area changes from about 30 to about 52 km. As a summary of all seismic models, the Moho depth map for SE Poland is presented, as well as a map of the extent of the most characteristic crustal elements in the area: a high velocity body in the upper crust, division into two- and three-layer consolidated crust, ranges of very deep layers with low velocities in the upper and middle crust, aproximate ranges of detected velocity anisotropy in the upper/middle crust, ranges of the high-velocity lower crust and high-velocity uppermost mantle. Both maps are com pared with the main struc tural el e ments from tec tonic map. This could form the base for a new geotectonic in ter pre ta tion of this com plex area.
    Źródło:
    Geological Quarterly; 2009, 53, 1; 141-158
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Elektrownia wiatrowa małej mocy do ładowania akumulatorów
    Wind small power plant for charging batteries
    Autorzy:
    Janik, T.
    Kapinos, J.
    Mika, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/1372842.pdf
    Data publikacji:
    2010
    Wydawca:
    Sieć Badawcza Łukasiewicz - Instytut Napędów i Maszyn Elektrycznych Komel
    Tematy:
    elektrownia wiatrowa
    akumulator
    ładowanie akumulatorów
    Opis:
    In the paper is presented construction solution of a wind small power plant using synchronous micromachine with permanent magnets. It is assigned for charging batteries of rated voltage of 12 V. Batteries will be used for power supply of electrical radio equipment operating at great distance from power supply network. Due change of wind speed therefore great fluctuations of the output voltage in the system was used the voltage converter. This converter allows for output voltage stabilization at the level of approx. 14 V while generator voltage value changes from 7 to 30 V. The prototype of this equipment has been made and results of its tests have been presented.
    Źródło:
    Maszyny Elektryczne: zeszyty problemowe; 2010, 88; 191-194
    0239-3646
    2084-5618
    Pojawia się w:
    Maszyny Elektryczne: zeszyty problemowe
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Comparison of gate leakage current components in metal-insulator-semiconductor structures with high-k gate dielectris
    Autorzy:
    Janik, T.
    Jakubowski, A.
    Majkusiak, B.
    Korwin-Pawłowski, M.
    Powiązania:
    https://bibliotekanauki.pl/articles/308423.pdf
    Data publikacji:
    2001
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    MIS structures
    ultrathin dielectrics
    high-k dielectrics
    Opis:
    Numerical simulations of the gate leakage current in metal-insulator-semiconductor (MIS) structures based on the transfer matrix approach were carried out. They show contribution of different components of this current in MIS structures with best known high-k dielectrics such as Ta2O5 and TiO2. The comparison of the gate leakage current in MIS structures with SiO2 layer as well Ta2O5 and TiO2 layers is presented as well. Additionally, the minimum Si electron affinity to a gate dielectric which allows to preserve given level of the gate leakage current is proposed.
    Źródło:
    Journal of Telecommunications and Information Technology; 2001, 1; 65-69
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Lithospheric structure of the western part of the East European Craton investigated by deep seismic profiles
    Autorzy:
    Grad, M.
    Janik, T.
    Guterch, A.
    Środa, P.
    Czuba, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2058944.pdf
    Data publikacji:
    2006
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    East European Craton
    crustal structure
    mantle reflectors
    deep seismic refraction
    seismic ray tracing
    Opis:
    The Palaeoproterozoic collision of Archaean Fennoscandia, Volgo-Uralia and Sarmatia, viewed as a large composite of terranes, each with an independent history during Archaean and Early Proterozoic time, formed the East European Craton. This paper summarizes the results of deep seismic sounding investigations of the lithospheric structure of the southwestern part of the East European Craton. On the basis of the modern EUROBRIDGE’94–97, POLONAISE’97 and CELEBRATION 2000 projects, as well as of data from the Coast Profile and from reinterpreted profiles VIII and XXIV, the main tectonic units of Fennoscandia and Sarmatia are characterized. The crustal thickness in the whole area investigated is relatively uniform, being between 40 and 50 km (maximum about 55 km). For Fennoscandia, the crystalline crust of the craton can be generally divided into three parts, while in Sarmatia the transition between the middle and lower crust is smooth. For both areas, relatively high P-wave velocities ( 7.0 km/s) were observed in the lower crust. Relatively high seismic velocities of the sub-Moho mantle (~8.2–8.3 km/s) were observed along most of the profiles. The uppermost mantle reflectors often occur ca. 10 to 15 km below the Moho. Finally, we show the variability in physical properties for the major geological domains of Fennoscandia and Sarmatia, which were crossed by the network of our profiles.
    Źródło:
    Geological Quarterly; 2006, 50, 1; 9-22
    1641-7291
    Pojawia się w:
    Geological Quarterly
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
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