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

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    Wyświetlanie 1-8 z 8
    Tytuł:
    A study of real-time memory management: evaluating operating systems performance
    Studium zarządzania pamięcią w czasie rzeczywistym: ocena efektywności systemu operacyjnego
    Autorzy:
    Coleman, A.
    Zalewski, J
    Powiązania:
    https://bibliotekanauki.pl/articles/282182.pdf
    Data publikacji:
    2013
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    memory management
    memory allocation
    real time
    jemalloc algorithm
    hoard algorithm
    benchmarking
    zarządzanie pamięcią
    alokacja pamięci
    czas rzeczywisty
    algorytm jemalloc
    algorytm hoard
    pomiar efektywności
    Opis:
    This paper addresses computer memory management with real-time operation in mind. Two essential memory allocation algorithms are analyzed, Hoard and jemalloc, as we 11 as a default algorithm for each specific platform considered. Benchmarking experiments for four platforms, Mac OS X, Linux, Windows NT, and VxWorks, were conducted and respective data collected and analyzed.
    Artykuł dotyczy zarządzania pamięcią w komputerach używanych do zastosowań w czasie rzeczywistym. Przeanalizowano dwa podstawowe algorytmy alokacji pamięci, Hoard i Jemalloc, oraz algorytm domyślny dla każej z rozważnych platform. Wykonano eksperymenty dla czterech platform, Mac OS X, Linux, Windows NT i VxWorks, dla których zebrano i przeanalizowano odpowiednie dane.
    Źródło:
    Automatyka / Automatics; 2013, 17, 1; 29-42
    1429-3447
    2353-0952
    Pojawia się w:
    Automatyka / Automatics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The development of a passive acoustic device for monitoring the effectiveness of shockwave lithotripsy in real time
    Autorzy:
    Leighton, T.
    Fedele, F.
    Coleman, A.
    McCarthy, C.
    Jamaluddin, A.
    Turangan, C.
    Ball, G.
    Ryves, S.
    Hurrell, A.
    Stefano de, A.
    White, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/331557.pdf
    Data publikacji:
    2008
    Wydawca:
    Polskie Towarzystwo Akustyczne
    Tematy:
    passive acoustic device
    shockwave lithotripsy
    hydroacoustics
    Opis:
    This paper reports how laboratory experiments and hydrocode simulations (of cavitation and shock wave propagation) have been used to generate a clinical device which can deliver real benefit to patients with kidney stones. Currently X-ray or ultrasound B-scan imaging are used to locate the stone and to check that it remains targeted at the focus of the lithotripter during treatment. Neither imaging method is particularly effective in allowing the efficacy of treatment to be judged during the treatment session. In this study, laboratory experiment and Computational Fluid Dynamics simulations of the complex interactions between the shock wave, the stone, and the human tissue, have been used to develop a new clinical device. This device, which has been tested in clinical trials, exploits the passive acoustic emissions generated by these interactions, to identify whether the stone remains in the focus, and to what extent the treatment has been successful.
    Źródło:
    Hydroacoustics; 2008, 11; 159-180
    1642-1817
    Pojawia się w:
    Hydroacoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hydrothermal synthesis of zeolites from green container glass
    Autorzy:
    Maisuria, Jenika
    Elmes, Victoria K.
    Hurt, Andrew P.
    Coleman, Aimee A.
    Coleman, Nichola J.
    Powiązania:
    https://bibliotekanauki.pl/articles/1845221.pdf
    Data publikacji:
    2020
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    sodalite
    cancrinite
    container glass
    Knoevenagel condensation
    ion-exchange
    Opis:
    Landfilling and stockpiling unrecycled colored container glass represents a considerable failure in sustainability with respect to the conservation of energy and mineral resources. In this study, the single-step hydrothermal synthesis of low-silica zeolites from a mixture of waste green container glass and aluminum foil (Al:Si = 1) in 4 M NaOH(aq) at 125 °C was followed at 1, 3, 7 and 14 days. The principal phases, sodalite and cancrinite, appeared within 1 day accompanied by minor quantities of hydrogarnet and tobermorite arising from a stoichiometric excess of calcium ions in the parent glass. Products of 63, 67, 71 and 72% crystallinity were obtained at 1, 3, 7 and 14 days, respectively, with partial successive conversion of sodalite to cancrinite over time. Ion-exchange and catalytic applications of sodalite and cancrinite arise from the high anionic charge of the 1:1 ratio of alternating SiO44- and AlO45units within their aluminosilicate frameworks. In this respect, the uptake capacity of the 14-day zeolitic product for Cu2+ and Cd2+ ions (1.58 meq g-1 and 1.66 meq g-1, respectively) was within the expected range for zeolites and compared favorably with those reported for other inorganic sorbents derived from industrial and municipal wastes. The 14-day product was also found to be an effective basic heterogeneous catalyst for the Knoevenagel condensation reaction.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2020, 56, 5; 784-796
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Physical Education-Teacher Education in the United States: Preparing Tomorrow’s Teachers for America’s Classrooms
    Autorzy:
    Garrahy, Deborah A.
    Coleman, Margaret M.
    Powiązania:
    https://bibliotekanauki.pl/articles/449194.pdf
    Data publikacji:
    2012
    Wydawca:
    Politechnika Opolska. Wydział Wychowania Fizycznego i Fizjoterapii
    Tematy:
    physical education
    teacher education
    accredited programs
    Opis:
    The purpose of this article is to examine university programs that prepare physical education teachers in the United States of America. Information will focus on accredited versus non-accredited programs and the status of physical education and physical activity of school aged youth in America.
    Źródło:
    Journal of Physical Education & Health - Social Perspective; 2012, 1, 2; 5-16
    2084-7971
    Pojawia się w:
    Journal of Physical Education & Health - Social Perspective
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hydrothermal synthesis of lithium silicate from waste glass. A preliminary study
    Autorzy:
    Coleman, N. J.
    Hurt, A. P.
    Raza, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/110613.pdf
    Data publikacji:
    2015
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    hydrothermal synthesis
    glass
    cullet
    recycling
    lithium metasilicate
    zinc
    Opis:
    Current environmental directives to conserve resources and to divert waste streams have generated significant interest in mineral recycling. In this respect, this preliminary study has demonstrated that lithium metasilicate can be prepared by hydrothermal reaction between waste container glass and lithium hydroxide solutions at 100 °C. Minor proportions of calcium hydroxide, calcite, lithium carbonate and tobermorite were also produced during the reaction. Percentage crystallinity and proportion of lithium metasilicate in the reaction product were found to increase as functions of lithium hydroxide concentration (between 1 and 4 M). This research has also shown that the lithium metasilicate phase can take up 6.4 mmol/g of Zn2+ ions after 24 h during batch sorption. Further work to optimise the yield and to appraise the antimicrobial properties of Zn2+-bearing lithium metasilicate is now warranted.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2015, 51, 2; 685-694
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Synthesis, structure and performance of calcium silicate ion exchangers from recycled container glass
    Autorzy:
    Coleman, N. J.
    Li, Q.
    Raza, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/109960.pdf
    Data publikacji:
    2014
    Wydawca:
    Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
    Tematy:
    tobermorite
    sorbent
    hydrothermal synthesis
    cullet
    recycling
    ion exchange
    Opis:
    Numerous technical, economic and societal factors limit the recycling of waste soda-lime-silica glass back into the primary production process and accordingly alternative applications for this material are sought. This study demonstrates that waste soda-lime-silica container glass is a suitable feedstock material for the production of tobermorite, a calcium silicate cation exchanger. Tobermorites were synthesised at 100 °C from stoichiometric mixtures of container glass and lime under alkaline hydrothermal conditions. Increasing concentrations of sodium hydroxide (between 1.0 M and 4.0 M) in the reaction mixture promoted the formation and crystallisation of tobermorite, and also resulted in greater fragmentation of the silicate chains along the b-axis direction. The maximum removal capacities of these tobermorite specimens for Cd2+ (441 mg g-1) and Zn2+ (122 mg g-1) compared well with those of other waste-derived sorbents. Superior Cd2+- and Zn2+-uptake capacities and kinetics were observed for the least crystalline tobermorite specimen, indicating that stacking defects facilitate the transport and exchange of cations within the lattice.
    Źródło:
    Physicochemical Problems of Mineral Processing; 2014, 50, 1; 5-16
    1643-1049
    2084-4735
    Pojawia się w:
    Physicochemical Problems of Mineral Processing
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Composite Sponges for in Situ Alveolar Bone Regeneration Following Tooth Extraction
    Autorzy:
    Guclu, Z.
    Hurt, A.
    Ohia, L.
    Coleman, N.
    Powiązania:
    https://bibliotekanauki.pl/articles/1031988.pdf
    Data publikacji:
    2017-03
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    87.85.Lf
    Opis:
    This research concerns the development of solvent-cast lyophilised composite sponges in the bioactive glass-alginate-chitosan system for alveolar bone tissue maintenance following tooth extraction. Hydroxyapatite formed on the surfaces of pure alginate, 50:50 alginate:chitosan blend and pure chitosan sponges blended with 10 wt.% bioactive glass within 7 days of exposure to simulated body fluid, indicating that they possess the potential to stimulate bone tissue formation. In the absence of bioactive glass, pure chitosan sponges also demonstrated in vitro bioactivity, to a lesser extent; unlike pure alginate and 50:50 alginate:chitosan blend, which did not. All samples formed macroporous sponges whose biocompatibility with human osteosarcoma cells increased as a function of chitosan-content. Polyelectrolyte complex formation between alginate and chitosan, and the incorporation of bioactive glass were found to increase the swelling capacity of the sponges in SBF. The findings of this study demonstrate that, bioactive glass-chitosan sponges are the favoured candidates for alveolar bone tissue augmentation as their rate of hydroxyapatite formation and biocompatibility are superior to those of the other samples.
    Źródło:
    Acta Physica Polonica A; 2017, 131, 3; 580-583
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Microwave radiometry in monitoring and emergency mapping of water seepage and dangerously high groundwaters
    Autorzy:
    Shutko, A. M.
    Haldin, A.
    Krapivin, V.
    Novichikhin, E.
    Sidorov, I.
    Tishchenko, Y.
    Haarbrink, R.
    Georgiev, G.
    Kancheva, R.
    Nikolov, H.
    Coleman, T.
    Archer, F.
    Pampaloni, P.
    Paloscia, S.
    Krissilov, A.
    Camps Carmona, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/307666.pdf
    Data publikacji:
    2007
    Wydawca:
    Instytut Łączności - Państwowy Instytut Badawczy
    Tematy:
    remote sensing
    passive microwave radiometry
    soil moisture
    water seepage
    risk assessment
    Opis:
    Detailed and geo-referenced maps identifying the locations of saturated and dry levees can be produced using microwave radiometric measurements from a light aircraft or helicopter, and integrated with GPS for positioning and orientation. The development of synergetic remote sensing technology for raised groundwater and seepage detection by the joint use of microwave and optical data along with GIS databases is an effective and most contemporary way of supporting risk assessment and facilitating disaster prevention and management. In this paper we present a remote sensing microwave technology for monitoring and detection of areas of water seepage through irrigation constructions, levees and dykes as well as for revealing areas with dangerously high groundwater level. The possibility for emergency response mapping, integrated with GPS and GIS data, facilitates the risk assessment and management services. The passive microwave radiometry (PMR) is based on spectral measurements in the millimetre to decimetre range of wavelengths. Compared to other remote sensing techniques, such as colour and infrared photography, thermal images and lidar, PMR is the only technology taking measurements under the earth's surface and therefore is very well suited for water seepage and underground water monitoring in a fast and reliable way.
    Źródło:
    Journal of Telecommunications and Information Technology; 2007, 1; 76-82
    1509-4553
    1899-8852
    Pojawia się w:
    Journal of Telecommunications and Information Technology
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-8 z 8

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