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    Wyświetlanie 1-10 z 10
    Tytuł:
    Oil Spill Models: A State of the Art of the Grid Map as a Function of Wind, Current and Oil Parameters
    Autorzy:
    Mazurek, J.
    Smolarek, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/116520.pdf
    Data publikacji:
    2013
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    oil spill
    Oil Spill Model
    Grid Map
    wind
    current
    Oil Parameters
    Opis:
    An integrated model, which contains flow and transport‐fate modules, will be presented for simulating transport and fate of oil spills at seas. The flow module uses different kinds of meshes that provide great flexibility for modeling the flow in complex geometries of currents and barriers. The refined grid resolution in regions of interest is important. Horizontal diffusion is simulated using random walk techniques in a Monte Carlo framework, whereas the vertical diffusion process can be solved on the basis of the Langeven equation. The model contains the most significant processes which affect the motion of oil particles. For a better fit to the curvature of the coastline there are used unstructured non overlapping rectangular or triangle grid cells. Special attention must be paid to choose the horizontal and vertical resolution in simulating the oil trajectory in the coastal area.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2013, 7, 1; 19-23
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Computer-aided quantitative subsurface mapping : examples of utilization
    Autorzy:
    Papiernik, B.
    Hajto, M.
    Górecki, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/2065891.pdf
    Data publikacji:
    2005
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    subsurface mapping
    grid
    quantitative map
    Z-MAP Plus
    Opis:
    The present age of digital subsurface mapping is represented above all by quantitative maps based on regular grids. They are created on the basis of various input data: digitized contours, widely comprehended well data, 2D and 3D seismic, and qualitative geological maps. Scope and the data utilization and the applied methodology of processing are strictly dependent on the scale and purpose of a given map; for regional and detailed maps they are significantly different. However, irrespective of the map scale, correct models, reflecting probable subsurface variability, instead of the input data spatial distribution and applied estimation algorithm themselves, are conditioned by chances of integrating of all the mentioned types of data. These purposes can be achieved only through the application of the most flexible interpretive programs such as ZMAP–Plus or mapping modules of the Geographix system. High quality quantitative subsurface maps based on regular grids are nowadays used first of all in petroleum exploration and geothermal research. But development of such studies may contribute to creation of high-quality, interactive, subsurface models, available not only for owners of expensive professional software but also for all geoscientists interested in these topics.
    Źródło:
    Przegląd Geologiczny; 2005, 53, 10/2; 956-960
    0033-2151
    Pojawia się w:
    Przegląd Geologiczny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The application of a noise mapping tool deployed in grid infrastructure for creating noise maps of Urban areas
    Autorzy:
    Szczodrak, M.
    Kotus, J.
    Czyżewski, A.
    Kostek, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/305743.pdf
    Data publikacji:
    2013
    Wydawca:
    Akademia Górniczo-Hutnicza im. Stanisława Staszica w Krakowie. Wydawnictwo AGH
    Tematy:
    noise map
    noise modeling
    grid computing
    noise
    Opis:
    The concept and implementation of the system for creating dynamic noise maps in PL-Grid infrastructure are presented. The methodology of dynamic acoustical map screating is introduced. The concept of noise mapping, based on noise source and propagation models, was developed and employed in the system. The details of incorporation of the system to the PL-Grid infrastructure are presented. The results of simulations performed by the system prototype are depicted. The results in the form of noise maps obtained by a system are compared with some other solutions in order to investigate accuracy.
    Źródło:
    Computer Science; 2013, 14 (2); 231-242
    1508-2806
    2300-7036
    Pojawia się w:
    Computer Science
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Chaotic path planning for grid coverage using a modified logistic-may map
    Autorzy:
    Petavratzis, Eleftherios
    Moysis, Lazaros
    Volos, Christos
    Nistazakis, Hector
    Muñoz-Pacheco, Jesus Manuel
    Stouboulos, Ioannis
    Powiązania:
    https://bibliotekanauki.pl/articles/384718.pdf
    Data publikacji:
    2020
    Wydawca:
    Sieć Badawcza Łukasiewicz - Przemysłowy Instytut Automatyki i Pomiarów
    Tematy:
    Logistic-May map
    path planning
    chaos
    grid coverage
    Opis:
    A simple and efficient method for creating a motion trajectory is presented with an aim to achieve sufficient coverage of a given terrain. A chaotic map has been used in order that the motion trajectory should be unpredictable. The chaotic path generator which has been created, is used for implementing a robot’s movement in four and eight directions. The path generator is tested in various scenarios and the results are discussed. After thorough examination, the proposed method shows that the motion in eight directions gives better and very satisfactory results.
    Źródło:
    Journal of Automation Mobile Robotics and Intelligent Systems; 2020, 14, 2; 3-9
    1897-8649
    2080-2145
    Pojawia się w:
    Journal of Automation Mobile Robotics and Intelligent Systems
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Creating Dynamic Maps of Noise Threat Using PL-Grid Infrastructure
    Autorzy:
    Szczodrak, M.
    Kotus, J.
    Kostek, B.
    Czyżewski, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/177988.pdf
    Data publikacji:
    2013
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    noise
    dynamic noise map
    reverse engineering
    grid computing
    Opis:
    The paper presents functionality and operation results of a system for creating dynamic maps of acoustic noise employing the PL-Grid infrastructure extended with a distributed sensor network. The work presented provides a demonstration of the services being prepared within the PLGrid Plus project for measuring, modeling and rendering data related to noise level distribution in city agglomerations. Specific computational environments, the so-called domain grids, are developed in the mentioned project. For particular domain grids, specialized IT solutions are prepared, i.e. software implementation and hardware (infrastructure adaptation), dedicated for particular researcher groups demands, including acoustics (the domain grid “Acoustics”). The infrastructure and the software developed can be utilized mainly for research and education purposes, however it can also help in urban planning. The engineered software is intended for creating maps of noise threat for road, railways and industrial sources. Integration of the software services with the distributed sensor network enables automatic updating noise maps for a specific time period. The unique feature of the developed software is a possibility of evaluating auditory effects which are caused by the exposure to excessive noise. The estimation of auditory effects is based on calculated noise levels in a given exposure period. The outcomes of this research study are presented in a form of the cumulative noise dose and the characteristics of the temporary threshold shift.
    Źródło:
    Archives of Acoustics; 2013, 38, 2; 235-242
    0137-5075
    Pojawia się w:
    Archives of Acoustics
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Influence of Axial Compressor Model Simplification and Mesh Density on Surge Margin Evaluation
    Autorzy:
    Muchowski, Rafał
    Gubernat, Sławomir Maciej
    Powiązania:
    https://bibliotekanauki.pl/articles/2023311.pdf
    Data publikacji:
    2021
    Wydawca:
    Stowarzyszenie Inżynierów i Techników Mechaników Polskich
    Tematy:
    CFD
    axial compressor
    surge margin
    jet engine
    compressor map
    grid dependence
    Opis:
    The menace of surge occurrence in the compressors is taken very seriously and its avoidance became a fundamental for the design of any modern jet engines. Nowadays, a problem with appropriate evaluation of the compressor surge margin while considering different simplifications of three-dimensional CFD model is still present. For that purpose, this article presents a comparison between the measurement data and several variants of 3D CFD models characterized by a specific mesh density. To calculate all the results on which the comparisons and conclusions are based, an 8-stage axial compressor is taken into account. Flow conditions of the machine are computed for three part load speeds: The low, the mid and the high one respecting the variable guide vanes schedule fitted to the specific load. For each of speed variants a four mesh configurations were generated: coarse, medium, fine and extra-fine. All speed configurations were treated with two different turbulence models – Wilcox k-ω and Menter’s SST k-ω, giving ultimately 15 CFD models, calculated with the TRACE solver using an initialization based on a circumferentially averaged flow solution delivered by the Streamline Curvature Method. During the study an additional assessment of reference grid independence was performed and the mesh convergence has been achieved. A comparison between turbulence models and the measurement proves that SST turbulence model is not well distributed through the speeds in compare to the measurement data and the Wilcox turbulence model. Inconsistency of sensitivity in the mesh coarsening for different rotational speeds was found. Increasing the mesh roughness level has to be executed for each speed separately. Overall compressor map shows that shift of the Pressure Ratio and the Mass Flow decreases with lower rotational speed. Neglecting the system add-ons like labyrinth sealing volumes, bleed-ports and other leakages has a visible influence on deviations from the measurements. Because of intended future use in design and optimization the “Medium” grid with Wilcox k-ω turbulence model was chosen, being a good representation of the Rig characteristics with reduction of the computing time.
    Źródło:
    Advances in Science and Technology. Research Journal; 2021, 15, 3; 243-253
    2299-8624
    Pojawia się w:
    Advances in Science and Technology. Research Journal
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Problem datacji map Polski Gerarda de Jode z drugiej połowy XVI wieku
    Remarks on map dating - maps of Poland by Gerard de Jode from the second half of the 16th century
    Autorzy:
    Łuczyński, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/204228.pdf
    Data publikacji:
    2006
    Wydawca:
    Polskie Towarzystwo Geograficzne
    Tematy:
    Gerard de Jode
    mapa
    Polska
    datacja mapy
    filiacja map
    De Jode Jode
    map
    Polska
    distortion grid
    synoptic chart
    hydrographic network
    map dating
    map filiation
    Opis:
    Artykuł dotyczy analizy treści map Polski Gerarda de Jode ukazujących się w jego atlasach i samoistnych z drugiej połowy XVI wieku. Badania przeprowadzono stosując trzy metody analityczne: graficzną-analizę siatki zniekształceń; porównawczą analizę treści hydrograficznej oraz lingwistyczną - stosując tablice synoptyczne. Uzyskane wyniki pozwoliły na uściślenie datacji poszczególnych map oraz ustalenie zależności filiacyjnych.
    The article analyzes the contents of maps of Poland published by Gerard de Jode, one of the three famous atlas publishers of the 16th century. Three methods of contents analysis were applied: graphic - distortion grid, comparative - hydrographic contents were analyzed and linguistic - filiation relations of particular maps were established with the use of synoptic charts. Until now the map dated 1576, with a visage of king Stefan Batory was considered to be the first map of Poland published by Gerard de Jode. The second was presumably published in Gerard de Jode's first atlas Speculum Orbis Terrarum of 1578. The third was to be the map with a visage of king Sigismund III Vasa in his third atlas, published posthumously in 1593. The conducted research, based mainly on the analysis of water network - rivers, lakes and the Baltic coastline, established, that the first map was actually published in the atlas of 1578 (the area of Prussia was drawn basing on the map of Prussia by Heinrich Zell, edited by Abraham Ortelius, 1570). The map published second was dated 1576, which marks the beginning of the reign of king Stefan Batory (whose visage was placed on the map). This is evident in the contents of the map in the area of Prussia, which is characteristic for the map of Prussia by Kasper Henneberger of 1576. It can be assumed that it was published between 1578 and 1586 (death of king Stefan Batory). The third of Gerard de Jode's maps is the map of Poland published in the atlas of 1593, with the same contents, but with a visage of a new king, Sigismund III Vasa. Unlike his competitor, publisher Abraham Ortelius, Gerard de Jode introduced numerous updates to his maps using the most recent sources available at the time. Abraham Ortelius added new maps to his atlases, but did not update the already existing ones.
    Źródło:
    Polski Przegląd Kartograficzny; 2006, T. 38, nr 2, 2; 133-144
    0324-8321
    Pojawia się w:
    Polski Przegląd Kartograficzny
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Redistribution population data across a regular spatial grid according to buildings characteristics
    Autorzy:
    Calka, B.
    Bielecka, E.
    Zdunkiewicz, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/145418.pdf
    Data publikacji:
    2016
    Wydawca:
    Polska Akademia Nauk. Czytelnia Czasopism PAN
    Tematy:
    dane demograficzne
    siatka przestrzenna
    dane topograficzne
    population data
    dasymetric modeling
    spatial grid
    choropleth map
    topographic data
    Opis:
    Population data are generally provided by state census organisations at the predefined census enumeration units. However, these datasets very are often required at userdefined spatial units that differ from the census output levels. A number of population estimation techniques have been developed to address these problems. This article is one of those attempts aimed at improving county level population estimates by using spatial disaggregation models with support of buildings characteristic, derived from national topographic database, and average area of a flat. The experimental gridded population surface was created for Opatów county, sparsely populated rural region located in Central Poland. The method relies on geolocation of population counts in buildings, taking into account the building volume and structural building type and then aggregation the people total in 1 km quadrilateral grid. The overall quality of population distribution surface expressed by the mean of RMSE equals 9 persons, and the MAE equals 0.01. We also discovered that nearly 20% of total county area is unpopulated and 80% of people lived on 33% of the county territory.
    Źródło:
    Geodesy and Cartography; 2016, 65, 2; 149-162
    2080-6736
    2300-2581
    Pojawia się w:
    Geodesy and Cartography
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The idea of leadership maps and managerial grids
    Autorzy:
    Borkowski, S.
    Powiązania:
    https://bibliotekanauki.pl/articles/111650.pdf
    Data publikacji:
    2015
    Wydawca:
    Stowarzyszenie Menedżerów Jakości i Produkcji
    Tematy:
    leadership map
    managerial grid
    management styles
    BOST analysis
    mapa przywództwa
    siatka kierownicza
    style zarządzania
    analiza BOST
    Opis:
    The assessment of the suitability of elements of classic leadership map/ managerial grids for opinion poll was undertaken. ‘Dead’ measurement points, containing digit 5 as an abscissa or ordinate, were assigned to particular quarters in the leadership grid through switching from the scale of 1÷9 to 1÷8. The structure of assessment of human problem importance and production issues for five enterprises after the change of scale was also presented.
    Źródło:
    Production Engineering Archives; 2015, 7, 2; 37-39
    2353-5156
    2353-7779
    Pojawia się w:
    Production Engineering Archives
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Cyfrowe mapy sejsmiczne północno-zachodniego obrzeżenia Gór Świętokrzyskich; metodyka przetwarzania numerycznego
    Numerical seismic maps of north-western margin of the Holy Cross Mountains; methodology of numerical processing
    Autorzy:
    Jóźwiak, W.
    Papiernik, B.
    Powiązania:
    https://bibliotekanauki.pl/articles/2063382.pdf
    Data publikacji:
    2003
    Wydawca:
    Państwowy Instytut Geologiczny – Państwowy Instytut Badawczy
    Tematy:
    profile sejsmiczne
    modele numeryczne
    Z-MAP Plus
    grid
    mapy sejsmiczne
    NW obrzeżenie Gór Świętokrzyskich
    seismic profiles
    numerical models
    seismic maps
    NW margin of the Holy Cross Mountains
    Opis:
    Rozwój mocy obliczeniowej komputerów oraz oprogramowania stwarzają zupełnie nowe możliwości interpretacyjne pozwalające na znaczne zwiększenie dokładności osiąganych rozwiązań i szybkie testowanie alternatywnych modeli geologicznych. Do wykonania cyfrowych map sejsmicznych NW obrzeżenia Gór Świętokrzyskich zastosowano oprogramowanie firmy Landmark Graphics Corp. Oprogramowanie to umożliwia przeprowadzenie pełnej procedury interpretacyjnej wymaganej do skonstruowania cyfrowych map sejsmicznych w domenie głębokościowej, kreślonych w wyniku wizualizacji komputerowych modeli (ang. grid). Wykorzystanie wspomaganej komputerowo interpretacji i najnowocześniejszego oprogramowania nie gwarantuje jednak automatycznego podniesienia jakości wyników. Decyduje o tym właściwe wykorzystanie dostępnych narzędzi. Artykuł przedstawia metodykę przetwarzania numerycznego zastosowaną do opracowania głębokościowych map (modeli) strukturalnych na podstawie interpretacji sejsmiki refleksyjnej w domenie czasowej. Szczególnie uwypuklono w nim techniki estymacji modeli numerycznych z zastosowaniem programu Z-MAP Plus.
    Increase of computers efficiency and development of geologically oriented software, opens completely new interpretation abilities, comprising - among others - considerable improvement of accuracy and opportunity of fast testing of alternative geological models. Landmark Graphic Corp. software which was applied to realise the grid-based numerical maps of NW margin of the Holy Cross Mountains, allow to establish full workflow necessary to estimate and visualise grid-based seismic maps in depth domain. However, computer-aided interpretation and the most modern software do not guarantee automatically, increase of result quality. It predominantly depends on appropriate utilisation of tool. Presented paper describes methodology of numerical processing, which was introduced to elaborate grid-based structural maps in depth domain, based on seismic interpretation in depth domain. Stress was put to Z-MAP Plus's techniques of grid estimation.
    Źródło:
    Biuletyn Państwowego Instytutu Geologicznego; 2003, 405; 61--85
    0867-6143
    Pojawia się w:
    Biuletyn Państwowego Instytutu Geologicznego
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-10 z 10

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