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Wyszukujesz frazę "Malinowski, A." wg kryterium: Autor


Tytuł:
Using Redis supported by NVRAM in HPC applications
Autorzy:
Malinowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/305650.pdf
Data publikacji:
2017
Wydawca:
Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
Tematy:
high performance computing
storage systems
NoSQL
NVRAM
Opis:
Nowadays, the efficiency of a storage systems is a bottleneck in many moern HPC clusters. High performance in traditional approach – processing using files – is often difficult to obtain because of model complexity and its read/write patterns. Alternative approach is applying a key-value database, which usually has low latency and scales well. On the other hand, many key-value stores suffer from limitation of memory capacity and vulnerability to serious faiures, which is caused by processing in RAM. Moreover, some research suggests, that scientific data models are not applicable to storage structures of key-value databases. In this paper, the author proposes resolving mentioned issues by replacing RAM with NVRAM. Practical example is based on Redis NoSQL. The article contains also a three domain specific APIs, that show the idea bhind transformation from HPC data model to Redis structures, as well as two micro-benchmarks results.
Źródło:
Computer Science; 2017, 18 (3); 287-300
1508-2806
2300-7036
Pojawia się w:
Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
High Altitude Platform : Future of Infrastructure
Autorzy:
Malinowski, A.
Zieliński, R. J.
Powiązania:
https://bibliotekanauki.pl/articles/226948.pdf
Data publikacji:
2010
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
HAP
High Altitude Platform
rural area
infrastructure
Opis:
High Altitude Platform (HAP) concept and idea is presented in the article. Characteristics, advantages and disadvantages of HAPs are described. There is also the comparison available between HAPs and existing telecommunication infrastructure (terrestrial and satellite). Selected examples of the possible limitation and technological restrictions of HAP based systems are presented in the article.
Źródło:
International Journal of Electronics and Telecommunications; 2010, 56, 2; 191-196
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Fuzzy logic in decision support system as a simple Human/Internet of Things interface for shunt active power filter
Autorzy:
Jasiński, M.
Majtczak, P.
Malinowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/201645.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
fuzzy logic
decision support system
shunt active power filter
power quality
smart grids
smart industry
harmonics compensation
internet of things (IoT)
internet of everything
logika rozmyta
system wspomagania decyzji
filtr aktywny
jakość energii
inteligentne sieci
smart przemysł
kompensacja harmonicznych
Internet Przedmiotów
Internet Wszystkiego
Opis:
This paper introduces a fuzzy logic (FL) based decision support system (DSS) for a three-phase bidirectional AC-DC grid converter, working in a modern grid-like smart grid or smart industry. It is assumed that the appliances connected to that grid interact as in the Internet of Things (IoT) or like in the Internet of Everything (IoE) i.e. with a human being located in the chain of data flow. A power electronics AC-DC converter, operating as a shunt active power filter (SAPF) is selected for the case study. A harmonics reduction algorithm is presented as an implementation sample of the DSS. The operation of the SAPF is described and analysed. Experimental results showing the tuning process and operation of the laboratory model are also presented and discussed. Finally, it is shown that the DSS is an elegant and intuitive interface, which can simplify a human’s or machine’s decision-making process. Thanks to the DSS, the meaning of transferred data is translated into linguistic variables that can be understood by non-experts. Hence, it is expected that the amount of transferred data in the smart grid and in the IoE would be reduced. But in the same time, the high quality of the controlled process is retained, as shown by the example of a conventional SAPF.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 4; 877-886
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
BMD bio - fuel for diesel engines
Autorzy:
Sitnik, L.
Malinowski, A.
Matuszewska, A.
Biedrzycki, J.
Powiązania:
https://bibliotekanauki.pl/articles/247980.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
road transport
biobutanol
rapeseed oil (RO)
bio-fuel
combustion engines
air pollution
environmental protection
Opis:
The paper regards the use of bio-blends consisting of vegetable oil and higher alcohol (biobutanol) as a new component of diesel fuels. The use of rapeseed oil as one of the components eliminates the need energy-intensive conversion rapeseed oil to FAME. The use of higher alcohol, such as a butanol obtained directly from biomass is in accordance with requirements of the EU on the promotion of renewable energy resources. Experiments on chassis dynamometer with fuels containing 20% by volume bio-blend (BM) and 80% of diesel fuels (D) were performed. Main parameters of engine (power output, torque, specific fuel consumption) and the main exhaust gas components (THC, CO, NOx and PM) showed very promising results. The properties of different alcohols and engine fuels, properties of investigated fuels, examples of investigations results on the car test chassis bed by NEDC test load and by fuelling the engine with investigated bmd20 and standard diesel fuel, relatives change of pollutants emission and fuel consumption by fuelling the car engine with BMD20 and Diesel fuel, the differences in emission and fuel consumption during fuelling the car engine with BMD20 and Diesel fuel recorded during the test bed investigation of the car, relatives change of pollutants emission and fuel consumption during engine fuelling with BMD20 and Diesel fuel are presented in the paper.
Źródło:
Journal of KONES; 2012, 19, 1; 365-370
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Negative Magnetoresistance in the Variable-Range-Hopping Transport of Strongly Underdoped La$\text{}_{2-x}$Sr$\text{}_{x}$CuO$\text{}_{4}$
Autorzy:
Malinowski, A.
Cieplak, M. Z.
Berkowski, M.
Guha, S.
Powiązania:
https://bibliotekanauki.pl/articles/2046779.pdf
Data publikacji:
2006-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.72.-h
74.25.Fy
73.43.Qt
Opis:
The in-plane transport of strongly underdoped La$\text{}_{2-x}$Sr$\text{}_{x}$CuO$\text{}_{4}$ films was examined in the magnetic fields up to 14 T and in temperatures down to 1.6 K. While at high temperatures the samples display metallic-like resistivity, the low-T transport is governed by variable-range-hopping mechanism. Careful analysis shows that the temperature dependence of pre-exponential factor in Mott's variable-range-hopping law may not be neglected and that the density of states at the Fermi level can be effectively expressed as g(E-E$\text{}_{F}$)=N$\text{}_{0}$ (E-E$\text{}_{F}$)$\text{}^{p}$, with a small exponent p of the order of 0.1. In the magnetic field parallel to CuO$\text{}_{2}$ planes one of the variable-range-hopping parameter,ρ$\text{}_{0}$, increases by about 20-25%, while the other one, T$\text{}_{0}$, decreases by about 10-15%, resulting in the decrease in total resistivity. This effect may be related to the decrease of the tunneling barrier between different antiferromagnetic clusters in the presence of magnetic field.
Źródło:
Acta Physica Polonica A; 2006, 109, 4-5; 611-615
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Implementation of a Web-based remote control system for qZS DAB application using low-cost ARM platform
Autorzy:
Korzeniewski, M.
Kulikowski, K.
Zakis, J.
Jasiński, M.
Malinowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/201276.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
ARM processor
DAB converter controller
network controller
web-based user interface
energy control
procesor ARM
kontroler
konwerter
kontroler sieciowy
interfejs użytkownika oparty na sieci Web
kontrola energii
DAB
Opis:
Continuous development of intelligent network applications drives the demand for deployment-ready hardware and software solutions. Such solutions are highly valued not only by distributed producers of energy but by energy consumers as well. The use of intelligent network applications enables the development and improvement of the quality of services. It also increases self-sufficiency and efficiency. This paper describes an example of such device that allows for the control of a dual active bridge (DAB) converter and enables its remote control in real time over an IP-based network. The details of both hardware and software components of proposed implementation are provided. The DAB converter gives a possibility to control and manage the energy between two DC power systems with very different voltage levels. Not only information, but also the quality of energy, the direction of power flow, and energy storage systems can be easily controlled through an IP-based network and power electronics converters. Information technology, together with intelligent control of power electronics technology, provides a flexible solution, especially for sustainable smart grids.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2016, 64, 4; 887-896
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Iron Substitutions on the Transport Properties of $FeTe_{0.65}Se_{0.35}$ Single Crystals
Autorzy:
Bezusyy, V.
Gawryluk, D.
Malinowski, A.
Berkowski, M.
Cieplak, M.
Powiązania:
https://bibliotekanauki.pl/articles/1374765.pdf
Data publikacji:
2014-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.25.F-
74.62.Dh
74.70.Xa
Opis:
We study the ab-plane resistivity and Hall effect in the single crystals of $Fe_{1-y}M_yTe_{0.65}Se_{0.35}$, where M = Co or Ni (0 ≤ y ≤ 0.21). In case of each dopant two types of crystals, with different crystalline quality, are prepared by Bridgman's method using different cooling rates, fast or slow. The impurities suppress the superconducting transition temperature, $T_c$, with different rates. $T_c$ reaches zero at markedly different impurity content: only 3 at.% of Ni, and about 14 at.% of Co. In addition, the suppression is somewhat dependent on the crystal cooling rate. The resistivity at the onset of superconductivity rises only weakly with the Co doping, while it increases 10 times faster for Ni. The Hall coefficient $R_{H}$ is positive for Co doping indicating that hole carriers dominate the transport. For Ni $R_{H}$ changes sign into negative at low temperatures for crystals with the Ni content exceeding 6 at.%. The implications of these results are discussed.
Źródło:
Acta Physica Polonica A; 2014, 126, 4a; A-76-A-79
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Metal-Insulator Transition in Zinc-Doped LaSrCuO
Autorzy:
Malinowski, A.
Cieplak, M. Z.
Berkowski, M.
Plesiewicz, W.
Skośkiewicz, T.
Powiązania:
https://bibliotekanauki.pl/articles/2046782.pdf
Data publikacji:
2006-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.72.-h
71.30.+h
74.25.Fy
Opis:
The magnetotransport in the vicinity of the metal-insulator transition in La$\text{}_{1.85}$Sr$\text{}_{0.15}$Cu$\text{}_{x}$Zn$\text{}_{1-x}$O$\text{}_{4}$ is studied in the mK temperature range. Both longitudinal and transverse magnetoresistance are negative indicating the importance of spin effects. The magnitude of transverse magnetoresistance is larger than the magnitude of longitudinal magnetoresistance, indicating the absence of positive orbital magnetoresistance, in sharp contrast to strongly underdoped La$\text{}_{2-x}$Sr$\text{}_{x}$CuO$\text{}_{4}$. Both transverse and longitudinal magnetoresistance are proportional to the relative change of zero-field conductivity. This suggests that low-temperature localization of carriers may originate in the spin-disorder scattering on the spin droplets around Zn-impurities.
Źródło:
Acta Physica Polonica A; 2006, 109, 4-5; 617-621
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
From Cuprate to Nickelate: Evolution of the Normal State Properties with Ni from $La_{1.85}Sr_{0.15}CuO_4$ to $La_{1.85}Sr_{0.15}NiO_4$
Autorzy:
Bezusyy, V.
Malinowski, A.
Minikayev, R.
Paszkowicz, W.
Dziawa, P.
Gorzelniak, R.
Powiązania:
https://bibliotekanauki.pl/articles/1537207.pdf
Data publikacji:
2010-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.25.Ha
74.72.-h
74.72.Kf
75.30.-m
Opis:
The influence of Ni doping on the normal-state pseudogap in $La_{1.85}Sr_{0.15}CuO_4$ is studied by dc magnetic susceptibility measurements, accompanied by X-ray powder diffraction analysis and resistivity measurements. The measurements are carried out on the polycrystalline $La_{1.85}Sr_{0.15}Cu_{1-y}Ni_yO_4$ samples in the whole doping range from y=0.01 up to y=1. The temperature of pseudogap opening is found to decrease above y=0.05 and to vanish when y exceeds 0.07. At small Ni content, up to y=0.07, the magnetic moment induced by Ni is constant and equal to 0.7 $μ_{B}$ per Ni, while for larger y it increases abruptly and reaches about 1.6 $μ_{B}$ per Ni ion for y = 0.5. The dependence of the normal-state resistivity on temperature evolves smoothly from the metallic-like for small y, to the variable range hopping, described by the Mott law with the exponent 1/4, for samples with y>0.15.
Źródło:
Acta Physica Polonica A; 2010, 118, 2; 402-405
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Resistivity and Hall Effect of the Amorphous Co$\text{}_{x}$Ni$\text{}_{70-x}$Fe$\text{}_{5}$Si$\text{}_{15}$B$\text{}_{10}$ Ribbons
Autorzy:
Perzyńska, K.
Biernacka, M.
Dobrzyński, L.
Malinowski, A.
Tarasenko, S.
Zaleski, P.
Powiązania:
https://bibliotekanauki.pl/articles/2013360.pdf
Data publikacji:
2000-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
72.15.Cz
Opis:
The influence of structural disorder and magnetism on the resistivity of the amorphous Co$\text{}_{x}$Ni$\text{}_{70-x}$Fe$\text{}_{5}$Si$\text{}_{15}$B$\text{}_{10}$ ribbons was investigated. The resistivity vs. alloy composition shows parabolic-like behaviour. In the thermal behaviour, resistivities of the samples show apparent magnetic contribution. They also exhibit minima at temperatures which can be correlated with the Curie temperatures. Above T ≥ 0.5T$\text{}_{C}$ resistivity increases linearly with increasing temperature. This effect is seemingly due to electron-phonon scattering. Obviously, the chemical and positional disorder is responsible for the major part of resistivity.
Źródło:
Acta Physica Polonica A; 2000, 97, 5; 745-748
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Magnetic Nature of a Ni Dopant in $La_{1.85}Sr_{0.15}CuO_4$: Spin-Glass Behavior
Autorzy:
Malinowski, A.
Bezusyy, V.
Minikayev, R.
Paszkowicz, W.
Dziawa, P.
Syryanyy, Y.
Sawicki, M.
Powiązania:
https://bibliotekanauki.pl/articles/1536592.pdf
Data publikacji:
2010-08
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.62.Dh
75.40.Cx
75.40.Gb
75.50.Lk
Opis:
The magnetic properties of $La_{1.85}Sr_{0.15}CuO_4$ doped with Ni was investigated in the field up to 5 T and in the temperature range from 2 K to 400 K using both dc and ac techniques. For Ni content larger than 0.05 the system exhibits irreversibility of low-field susceptibility χ(T) below a certain temperature depending on y and a cusp at $T_{g}$ in χ(T) measured after zero-field cooling. The decay of remnant magnetization below $T_{g}$ with time is described by a stretched-exponential function. In accordance with scaling theory, all the χ(T) data for y = 0.50 sample taken in the vicinity of $T_{g}$ at different fields collapse onto two separate curves when plotted as $q|t|^{-β}$ vs. B$^2 |t|^{-β - γ}$, where q is the spin-glass order parameter, t = (T - $T_{g}$)/$T_{g}$, and β and γ are the critical exponents. All these features taken together reveal existence of spin-glass phase below $T_{g}$. Variation of $T_{g}$ with y is linear below y = 0.25 and $T_{g}$ extrapolates to 0 K for y → 0 what strongly suggests that spin-glass phase extends into superconducting region of the phase diagram.
Źródło:
Acta Physica Polonica A; 2010, 118, 2; 244-248
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Analysis of the Dispersion of Electrical Parameters and Characteristics of FinFET Devices
Autorzy:
Malinowski, A.
Tomaszewski, D.
Łukasiak, L.
Jakubowski, A.
Sekine, M.
Hori, M.
Korwin-Pawlowski, M. L.
Powiązania:
https://bibliotekanauki.pl/articles/308253.pdf
Data publikacji:
2009
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
FinFET
line edge roughness
parameter variability
plasma etching
technology computer aided design (TCAD)
Opis:
Extensive numerical simulations of FinFET structures have been carried out using commercial TCAD tools. A series of plasma etching steps has been simulated for different process conditions in order to evaluate the influence of plasma pressure, composition and powering on the FinFET topography. Next, the most important geometric parameters of the FinFETs have been varied and the electrical characteristics have been calculated in order to evaluate the sensitivity of the FinFET electrical parameters on possible FinFET structure variability.
Źródło:
Journal of Telecommunications and Information Technology; 2009, 4; 45-50
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Multi-Domain Modeling and Simulations of the Heterogeneous Systems
Autorzy:
Pieniek, T.
Janczyk, G.
Janusz, P.
Szynka, J.
Grabiec, P.
Kociubiński, A.
Ekwińska, M.
Tomaszewski, D.
Malinowski, A.
Powiązania:
https://bibliotekanauki.pl/articles/308063.pdf
Data publikacji:
2010
Wydawca:
Instytut Łączności - Państwowy Instytut Badawczy
Tematy:
Corona
Coventor
3D integration
e-Cubes
heterogeneous systems
MATLAB
modeling
simulation
Opis:
This paper discusses the multi-domain modeling and simulation issues of the design and analysis of heterogeneous integrated systems. Modeling and simulation methodlogy and tools are also discussed.
Źródło:
Journal of Telecommunications and Information Technology; 2010, 1; 34-39
1509-4553
1899-8852
Pojawia się w:
Journal of Telecommunications and Information Technology
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Growth and Characterization of $YBa_2Cu_3O_{7-δ}$ Films Deposited by Laser Ablation on $CeO_2$-Buffered Sapphire
Autorzy:
Abal'osheva, I.
Zaytseva, I.
Aleszkiewicz, M.
Malinowski, A.
Bezusyy, V.
Syryanyy, Y.
Gierłowski, P.
Abal'oshev, O.
Kończykowski, M.
Cieplak, M.
Powiązania:
https://bibliotekanauki.pl/articles/1374756.pdf
Data publikacji:
2014-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
74.78.-w
77.55.Px
81.15.Fg
Opis:
In this work we study the growth, by pulsed laser deposition, of $YBa_2Cu_3O_{7-δ}$ (YBCO) films on the $CeO_2$-buffered R-cut sapphire substrates, with the buffer layer recrystallized prior to the deposition of superconductor. We find that the superconducting critical temperature and the critical current density of the films are very close to similar parameters for the YBCO films grown on lattice-matched single crystalline substrates. It appears that the structural defects in the buffer layer affect the microstructure of YBCO films, resulting in high values of the critical current density, suitable for applications.
Źródło:
Acta Physica Polonica A; 2014, 126, 4a; A-69-A-72
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Heat Flux Identification at the Charge Surface During Heating in Chamber Furnace
Autorzy:
Gołdasz, A.
Malinowski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/351346.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
heat flux
inverse method
finite element method
chamber furnace
Opis:
In this study, a method of determining the heat flux, which reaches the surface of a charge, has been presented with the use of an inverse analysis. The research on the heating process of a square 15HM steel charge was conducted in a natural gas-fired laboratory furnace. The inverse solution was based on the search of the minimum standard error between the measured and the calculated temperatures. The temperature of the charge has been calculated by the finite element method, solving the heat conduction equation for a square charge heated on all the surfaces. As a result, the mean value of the heat flux on each of the heated surfaces of the charge was estimated.
Źródło:
Archives of Metallurgy and Materials; 2016, 61, 4; 2021-2026
1733-3490
Pojawia się w:
Archives of Metallurgy and Materials
Dostawca treści:
Biblioteka Nauki
Artykuł

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