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Wyszukujesz frazę "Szewczyk, R." wg kryterium: Autor


Tytuł:
Management of solar energy
Gospodarowanie energią słoneczną
Autorzy:
Szewczyk, R.
Powiązania:
https://bibliotekanauki.pl/articles/100366.pdf
Data publikacji:
2016
Wydawca:
Uniwersytet Rolniczy im. Hugona Kołłątaja w Krakowie
Tematy:
solar energy
solar radiation
GIS
spatial planning
investment planning
Renewable Energy Resources Act
renewable energy resources
energia słoneczna
promieniowanie słoneczne
planowanie przestrzenne
planowanie inwestycji
ustawa o odnawialnych źródłach energii
OZE
Opis:
The article addresses issues related to planning investments based on renewable energy resource, as exemplified by solar energy. In the first part mean annual amounts of total solar irradiance in Poland are presented and legal conditions for development of this kind of technology with reference to the European Union regulations and to the Renewable Energy Resources Act of 20 February 2015. In the next part of the paper a distribution model of direct solar irradiance for the town and community (gmina) of Jordanów has been constructed. Mountainous character of this area, located in the south part of the Małopolskie voivodeship, means there are very good as well as very bad conditions of insolation. The results obtained by using the model were assigned to building plots and plots intended for development and than they were analysed with the aim of choosing optimal areas for green investments based on solar energy.
W artykule poruszono problematykę związaną z planowaniem inwestycji opartych na odnawialnych źródłach energii na przykładzie energii słonecznej. W pierwszej części przedstawiono średnie roczne sumy całkowitego promieniowania słonecznego w Polsce oraz zaprezentowano prawne uwarunkowania rozwoju tego typu technologii w odniesieniu do przepisów Unii Europejskiej i ustawy o odnawialnych źródłach energii z dnia 20 lutego 2015 roku. W kolejnej części wykonano model rozkładu bezpośredniego promieniowania słonecznego dla miasta i gminy Jordanów. Górzysty charakter tego obszaru, który jest położony w południowej części województwa małopolskiego sprawia, że występują tam obszary o bardzo dobrych, jak również bardzo złych warunkach ekspozycji słonecznej. Wyniki uzyskane z modelu przypisano działkom budowlanym oraz działkom przeznaczonym pod zabudowę, a następnie przeanalizowano pod kątem doboru optymalnych obszarów pod inwestycje proekologiczne oparte na energii słonecznej.
Źródło:
Geomatics, Landmanagement and Landscape; 2016, 1; 95-103
2300-1496
Pojawia się w:
Geomatics, Landmanagement and Landscape
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The method of moments in Jiles–Atherton model based magnetostatic modelling of thin layers
Autorzy:
Szewczyk, R.
Powiązania:
https://bibliotekanauki.pl/articles/140580.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
Jiles–Atherton model
magnetostatic
thin layers
method of moments
Opis:
The method of moments enables effective magnetostatic modelling of thin layers, where thickness of the layer should be considered. This paper presents the non-linear extension for this method of modelling. An initial magnetization curve, necessary for modelling, was reconstructed from saturation hysteresis loops on the basis of the Jiles–Atherton model. Finally, the set of non-linear equations was stated, and an example of solution for a square-shaped magnetic thin layer is presented.
Źródło:
Archives of Electrical Engineering; 2018, 67, 1; 27-35
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Generalization of Magnetostatic Method of Moments for Thin Layers with Regular Rectangular Grids
Autorzy:
Szewczyk, R.
Powiązania:
https://bibliotekanauki.pl/articles/1032670.pdf
Data publikacji:
2017-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.70.Ak
75.50.Kj
Opis:
Possibilities of the modeling of the flux density distribution in thin films are significantly limited using the finite elements method due to the fast increase of the number of tetrahedral elementary cells with reduction of the thickness. For this reason, method of the moments is very important alternative for finite elements method in the case of thin layers, where layer's thickness should be considered. Method of the moments overcomes this barrier, due to the possibility of operation on uniform grids with limited number of cells. Moreover, in opposite to the finite elements method, the method of the moments requires solving of the well defined linear equations, instead of the set of ill-posed differential equations. Paper presents the generalization of the method of the moments for thin layers with given thickness. Layers are defined as the 2D rectangular grids. Within the generalization, four key equations describing the influence of rectangular cell's border on the magnetization of cells are stated. On the base of these dependences, the set of 2NM linear equations was determined, where N and M are the numbers of rectangular cells in the rows and columns of regular grid. Finally, the set of linear equations is solved and magnetic flux density distribution in the thin layer is calculated.
Źródło:
Acta Physica Polonica A; 2017, 131, 4; 845-847
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Spektrometria mas – standard analityczny
Autorzy:
Szewczyk, R
Powiązania:
https://bibliotekanauki.pl/articles/274009.pdf
Data publikacji:
2013
Wydawca:
Roble
Tematy:
spektrometria masowa
tandemowa spektrometria mas
techniki analityczne
mass spectrometry
tandem mass spectrometry
analytical techniques
Źródło:
LAB Laboratoria, Aparatura, Badania; 2013, 18, 3; 15-16
1427-5619
Pojawia się w:
LAB Laboratoria, Aparatura, Badania
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Technical B-H Saturation Magnetization Curve Models for SPICE, FEM and MoM Simulations
Autorzy:
Szewczyk, R.
Powiązania:
https://bibliotekanauki.pl/articles/384253.pdf
Data publikacji:
2016
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
saturation
magnetization curve
perpendicular anisotropy
Mn-Zn ferrite
Finemet
Opis:
Recent development of SPICE, FEM and MoM software often requires the fast and reliable description of BH saturation magnetization curve. In spite of the fact that physical models of BH saturation curve are very sophisticated, for technical purposes, such curve may be modelled by simplified equations. Paper presents the quantitative assessment of the quality of four technical models of BH saturation magnetization curve performed for four modern magnetic materials: constructional corrosion resistant steel, Mn-Zn ferrite, amorphous alloy with perpendicular anisotropy as well as Finemet-type nanocrystalline magnetic material. Presented results confirm reliability of the model as well as indicate that high-speed calculation may be done using arctangent function.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2016, 10, 2; 3-7
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling of the Magnetic Characteristics of Isotropic and Anisotropic Materials for Sensor Applications
Autorzy:
Szewczyk, R.
Powiązania:
https://bibliotekanauki.pl/articles/1813527.pdf
Data publikacji:
2008-01
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.60.Ej
75.50.Gg
75.50.Kj
Opis:
The following paper presents the results of modelling of the magnetic characteristics of isotropic (Ni-Zn ferrite) and anisotropic material ($Fe_{40}Ni_{38}Mo_4B_{18}$ amorphous alloy in as quenched state), both useful for sensor applications. For the modelling an extended Jiles-Atherton model was used. Extension of the model connects model's parameter k, describing average energy required to break pinning site, with magnetic state of the material. Such extension of the model is reasonable from the physical point of view. Good agreement between experimental data and modelling confirms that the extended Jiles-Atherton model creates the possibility of modelling of magnetic characteristics of both isotropic and anisotropic magnetic cores.
Źródło:
Acta Physica Polonica A; 2008, 113, 1; 67-70
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Stress-Induced Anisotropy and Stress Dependence of Saturation Magnetostriction in the Jiles-Atherton-Sablik Model of the Magnetoelastic Villari Effect
Autorzy:
Szewczyk, R.
Powiązania:
https://bibliotekanauki.pl/articles/355063.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
magnetic hysteresis model
soft ferrite
magnetoelastic anisotropy
Opis:
The paper presents the results of the magnetoelastic Villari effect modelling in high-permeability Mn0.51Zn0.44Fe2.05O4 ferrite. Modelling was performed on the basis of measurements of magnetoelastic characteristics of frame-shaped samples. For the modelling, the corrected Jiles-Atherton-Sablik model was used. On the base of modelling results, the stress dependence of parameter k and stress-induced anisotropy were estimated. As a result the changes of saturation magnetostriction of Mn0.51Zn0.44Fe2.05O4 ferrite subjected to stresses were calculated. Such changes were previously observed experimentally. However, the phenomenon of stress-induced sign change of saturation magnetostriction was never previously explained quantitatively.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 2A; 607-612
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Capacitive human presence sensor for safety applications
Autorzy:
Frydrych, A.
Szewczyk, R.
Powiązania:
https://bibliotekanauki.pl/articles/384375.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
capacitive sensors
people safety
underground transportation network
Opis:
Paper presents a novel idea of capacitive sensor for human presence detection. Due to the use of resonant circuit significant increase of sensor's sensitivity was achieved. In the case of human hand, value of output signal changes up to 421per cent. Moreover, sensor creates possibility of determination of the material of the detected object. As a result developed sensor can be applied for human presence detection sensors utilized in safety systems, which are especially suitable for underground transportation network.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2010, 4, 3; 45-49
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Intelligent utilization of waste of electrical and electronic equipment (WEEE) with robotized tool
Autorzy:
Szałatkiewicz, J.
Szewczyk, R.
Powiązania:
https://bibliotekanauki.pl/articles/384565.pdf
Data publikacji:
2012
Wydawca:
Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
Tematy:
WEEE
robotic
dismantling
disassembly
waste
recycling
recovery of resources
HDD
Opis:
The article examines the solution of intelligent robotic utilization of electrical waste and electronic equipment (WEEE), as means of materials recovery. The paper provides criteria for selection, identification and waste analysis, enabling application of robotic dismantling solutions. Based on proposed criteria, the waste of computer hard disk drives (HDD) was identified, analyzed, and their characteristics described. Furthermore applying described approach to robotized dismantling, the complete process of waste HDD processing, covering all the procedural steps was presented for the selected disk. Described intelligent utilization process can be performed with use of 2 robots equipped with, 2 tools and one conveyor handle. Authors also briefly presents issues related to proposed process approached during HDD waste disassembly studies. In addition, paper presents the quantities of materials to be recovered from the HDD waste.
Źródło:
Journal of Automation Mobile Robotics and Intelligent Systems; 2012, 6, 4; 45-49
1897-8649
2080-2145
Pojawia się w:
Journal of Automation Mobile Robotics and Intelligent Systems
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimisation of Frame-Shaped Fluxgate Sensor Core made of Amorphous Alloy Using Generalized Magnetostatic Method of Moments
Autorzy:
Szewczyk, R.
Frydrych, P.
Powiązania:
https://bibliotekanauki.pl/articles/1032692.pdf
Data publikacji:
2017-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
85.75.Ss
75.50.Kj
Opis:
Fluxgate magnetic field sensors are commonly used in the industry, navigation as well as in non-destructive testing. Moreover, recent development of such sensors is focused on effective application of thin layer magnetic cores, such as made of amorphous alloys. However, effective development of fluxgate sensors require method of modeling its core taking into account demagnetization. The paper presents the results of optimization of the shape of thin-layer core for fluxgate sensor. Due to the fact that possibility of application of finite elements method is limited in the case of thin layer, the method of moments was used. Considering the geometry of the core as well as magnetizing and sensing winding, the optimal proportion of the length/thickness parameter was determined from the point of view of sensor sensitivity. It was proven that value of this optimal proportion is strongly dependent of thickness of the core.
Źródło:
Acta Physica Polonica A; 2017, 131, 4; 660-662
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł

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