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Wyszukujesz frazę "Gallagher, P." wg kryterium: Autor

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    Wyświetlanie 1-6 z 6
    Tytuł:
    Sieving by prime powers
    Autorzy:
    Gallagher, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1393729.pdf
    Data publikacji:
    1974
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Źródło:
    Acta Arithmetica; 1973-1974, 24, 5; 491-497
    0065-1036
    Pojawia się w:
    Acta Arithmetica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A larger sieve
    Autorzy:
    Gallagher, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1393976.pdf
    Data publikacji:
    1971
    Wydawca:
    Polska Akademia Nauk. Instytut Matematyczny PAN
    Źródło:
    Acta Arithmetica; 1971, 18, 1; 77-81
    0065-1036
    Pojawia się w:
    Acta Arithmetica
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Extending the sheba propagatio model to reduce parameter-related uncertainties
    Autorzy:
    Pierantoni, G.
    Coghlan, B.
    Kenny, E.
    Gallagher, P.
    Perez-Suarez, D.
    Powiązania:
    https://bibliotekanauki.pl/articles/305331.pdf
    Data publikacji:
    2013
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    heliophysics
    HELIO
    SCI-BUS
    distributed computation infrastructure
    propagation models
    Opis:
    Heliophysics is the branch of physics that investigates the interactions and correlation of different events across the Solar System. The mathematical models that describe and predict how physical events move across the solar system (ie. Propagation Models ) are of great relevance. These models depend on parameters that users must set, hence the ability to correctly set the values is key to reliable simulations. Traditionally, parameter values can be inferred from data either at the source (the Sun) or arrival point (the target) or can be extrapolated from common knowledge of the event under investigation. Another way of setting parameters for Propagation Models is proposed here: instead of guessing a priori parameters from scientific data or common knowledge, the model is executed as a parameter-sweep job and selects a posteriori the parameters that yield results most compatible with the event data. In either case ( a priori and a posteriori ), the correct use of Propagation Models requires information to either select the parameters, validate the results, or both. In order to do so, it is necessary to access sources of information. For this task, the HELIO project proves very effective as it offers the most comprehensive integrated information system in this domain and provides access and coordination to services to mine and analyze data. HELIO also provides a Propagation Model called SHEBA, the extension of which is currently being developed within the SCI-BUS project (a coordinated effort for the development of a framework capable of offering to science gateways seamless access to major computing and data infrastructures).
    Źródło:
    Computer Science; 2013, 14 (2); 253-272
    1508-2806
    2300-7036
    Pojawia się w:
    Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A workflow-oriented approach to Propagation Models in Heliophysics
    Autorzy:
    Pierantoni, G.
    Carley, E.
    Byrne, J.
    Perez-Suarez, D.
    Gallagher, P. T.
    Powiązania:
    https://bibliotekanauki.pl/articles/305701.pdf
    Data publikacji:
    2014
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    heliophysics
    workflow
    TAVERNA
    Coronal Mass Ejection
    propagation models
    Opis:
    The Sun is responsible for the eruption of billions of tons of plasma and the generation of near light-speed particles that propagate throughout the solar system and beyond. If directed towards Earth, these events can be damaging to our tecnological infrastructure. Hence there is an effort to understand the cause of the eruptive events and how they propagate from Sun to Earth. However, the physics governing their propagation is not well understood, so there is a need to develop a theoretical description of their propagation, known as a Propagation Model, in order to predict when they may impact Earth. It is often difficult to define a single propagation model that correctly describes the physics of solar eruptive events, and even more difficult to implement models capable of catering for all these complexities and to validate them using real observational data. In this paper, we envisage that workflows offer both a theoretical and practical framework for a novel approach to propagation models. We define a mathematical framework that aims at encompassing the different modalities with which workflows can be used, and provide a set of generic building blocks written in the TAVERNA workflow language that users can use to build their own propagation models. Finally we test both the theoretical model and the composite building blocks of the workflow with a real Science Use Case that was discussed during the 4th CDAW (Coordinated Data Analysis Workshop) event held by the HELIO project. We show that generic workflow building blocks can be used to construct a propagation model that succesfully describes the transit of solar eruptive events toward Earth and predict a correct Earth-impact time.
    Źródło:
    Computer Science; 2014, 15 (3); 271-291
    1508-2806
    2300-7036
    Pojawia się w:
    Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    2D Electron Gas in Non-Uniform Magnetic Fields
    Autorzy:
    Gallagher, B. L.
    Kubrak, V.
    Rushforth, A.
    Neumann, A. C.
    Edmonds, K. W.
    Main, P. C.
    Henini, M.
    Marrows, C. H.
    Hickey, B. J.
    Thoms, S.
    Dahlberg, D. E.
    Powiązania:
    https://bibliotekanauki.pl/articles/2014148.pdf
    Data publikacji:
    2000-09
    Wydawca:
    Polska Akademia Nauk. Instytut Fizyki PAN
    Tematy:
    73.50.Jt
    73.20.Dx
    73.23.Ad
    73.50.Fq
    Opis:
    We present a review of some of our recent experimental work on hybrid ferromagnet/semiconductor devices in which 2D electrons propagate through magnetic barriers, periodic magnetic modulations, and random magnetic fields.
    Źródło:
    Acta Physica Polonica A; 2000, 98, 3; 217-230
    0587-4246
    1898-794X
    Pojawia się w:
    Acta Physica Polonica A
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-6 z 6

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