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Wyszukujesz frazę "Van Gelder, P." wg kryterium: Autor

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    Tytuł:
    Methods for risk analysis in disaster reduction
    Autorzy:
    Van Gelder, P. H. A. J. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/2069580.pdf
    Data publikacji:
    2007
    Wydawca:
    Uniwersytet Morski w Gdyni. Polskie Towarzystwo Bezpieczeństwa i Niezawodności
    Tematy:
    risk analysis
    disaster reduction
    natural hazards
    Opis:
    This paper discusses a proposal for a risk management tool for applications to risk reduction of natural hazards.
    Źródło:
    Journal of Polish Safety and Reliability Association; 2007, 1; 121--125
    2084-5316
    Pojawia się w:
    Journal of Polish Safety and Reliability Association
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Integration of elliptical ship domains and velocity obstacles for ship collision candidate detection
    Autorzy:
    Chen, P. F.
    Van Gelder, P.
    Mou, J. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/116538.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    collision avoidance
    elliptical ship domain
    ship collision candidate detection
    time-discrete velocity obstacle algorithm (TD-NLVO)
    AIS Data
    ship trajectory
    collision candidate detection
    collision candidate
    Opis:
    The maritime shipping industry has been making significant contributions to the development of the regional and global economy. However, maritime accidents and their severe consequences have been posing an incrementing risk to the individuals and societies. It is therefore important to conduct risk analysis on such accidents to support maritime safety management. In this paper, a modified ship collision candidate detection method is proposed as a tool for collision risk analysis in ports and waterways. Time-Discrete Velocity Obstacle algorithm (TD-NLVO) is utilized to detect collision candidates based on the encounter process extracted from AIS data. Ship domain model was further integrated into the algorithm as the criteria for determination. A case study is conducted to illustrate the efficacy of the improved model, and a comparison between the existing method and actual ship trajectories are also performed. The results indicate that with the integration of ship domain, the new method can effectively detect the encounters with significant collision avoidance behaviours. The choice of criteria can have a significant influence on the results of collision candidate detection.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 4; 751-758
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Measuring ship collision risk in a dense traffic environment
    Autorzy:
    Huang, Y.
    Van Gelder, P. H. A. J. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/116331.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    collision avoidance
    Imminent Collision Risk Assessment (ICRA)
    Time to Closest Point of Approach (TCPA)
    Distance at Closest Point of Approach (DCPA)
    risk measures
    dense traffic environment
    ship collision rsk
    measuring ship collision risk
    Opis:
    Collision risk measurement is an essential topic for ship collision prevention. Many risk measures, i.e. DCPA/TCPA, etc., decouple the ship traffic into several pairs of ships and then evaluate the risk in each pair. This kind of measurement loses some information of the entire traffic and might include some biases in risk measurement, especially in multiple-ship scenarios. In this article, Imminent Collision Risk Assessment (ICRA) is extended, which formulates collision risk as a ratio of reachable maneuvers leading to a collision and all reachable maneuvers (velocities). Two groups of scenarios have been simulated to show the ICRA is suitable for assessing the collision risk in multiple-ship scenarios. Moreover, two improvements have been introduced: (1) a generalized velocity obstacle algorithm is introduced to collect the maneuvers leading to collisions, which considers ship dynamics; (2) the constraints of forces are considered in the formulation of reachable maneuvers. As a result, the proposed measurement helps one ship assess the risk of approaching obstacles which are difficult to avoid the collision in terms of own-ship’s dynamics and kinetic constraints.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 4; 737-744
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-3 z 3

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