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Wyszukujesz frazę "ships safety" wg kryterium: Temat


Wyświetlanie 1-6 z 6
Tytuł:
Design and operational problems of safety of surface naval and merchant ships in damaged conditions
Autorzy:
Gerigk, M.
Powiązania:
https://bibliotekanauki.pl/articles/320436.pdf
Data publikacji:
2007
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
bezpieczeństwo statku
uszkodzenia
ships' safety
damage
Opis:
The paper regards various design and operational problems associated with survivability of surface naval and merchant ships using an alternative probabilistic methodology. This methodology is based on application of the performance-oriented and risk-based approaches. The performance-based approach requires to use the design and hydromechanics-based application methods. A measure of a ship safety in damaged conditions is either a risk or risk level. The risk is estimated using the risk analysis. Between the most important elements of risk analysis are the hazard identification, scenario development, quantitative risk assessment and risk control. The assessment of safety is based on the total risk management TRM approach including the risk assessment and risk management. The detailed discussion regarding the method and modeling will be submitted for publication by the Gdansk University of Technology in separate publication.
Źródło:
Annual of Navigation; 2007, 12; 15-22
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
On navigational situation evaluation under ambiguity and partial evidence
Autorzy:
Filipowicz, W.
Powiązania:
https://bibliotekanauki.pl/articles/320679.pdf
Data publikacji:
2009
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
przewidywanie ryzyka nawigacyjnego
bezpieczeństwo morskie statku
navigational risk prediction
ships' safety maritime
Opis:
The paper depicts new approach involving navigational situation assessment. Nowadays operator at maritime traffic monitoring station have access to a great amount of various quality data. Information come from different sources and the data are generated by multiple of sensors. Multiple sources of data create new challenge regarding data association. The challenge is met by technology called data fusion. By means of fusion, different sources of information are combined to arrive at proper decision. Ships safety factors were introduced to enable vessels' classification regarding potential consequences of an accident. It is assumed that safety factors are fuzzy, imprecise values. Small ranges of value were assigned to small craft without dangerous cargo. The largest intervals are reserved for huge crude carriers. Fuzzy factors (SF) depend on subjective evaluation of ships tonnage and on amount as well as harmfulness of their cargo. Extended scope of the SFs is introduced and reasoning on subjective classification discussed. Included numerical example illustrates presented material.
Źródło:
Annual of Navigation; 2009, 15; 25-32
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Errors in the presentation of the vessels course and speed for the VTS operator
Autorzy:
Śniegocki, H.
Powiązania:
https://bibliotekanauki.pl/articles/320589.pdf
Data publikacji:
2002
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
nawigacja
bezpieczeństwo nawigacyjne
safety navigation
safety of ships
navigation
Opis:
The paper presents some results based on the research made in the VTS Gdańsk area. Conclusions from the experiments shows that errors in the presentation of ships course and speed on the VTS operator console may not allow to VTS operator to react in time to solve the gangerous situation.
Źródło:
Annual of Navigation; 2002, 4; 79-88
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Optimisation of vessel trafic using fuzzy linear programming
Autorzy:
Pietrzykowski, Z.
Uchacz, W.
Powiązania:
https://bibliotekanauki.pl/articles/320599.pdf
Data publikacji:
2003
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
nawigacja
żegluga
bezpieczeństwo nawigacyjne
programowanie liniowe
navigation
safety navigation
safety of ships
linear programming
Opis:
The optimisation of vessel traffic in narrow channels is concerned with the optimisation of vessel passage times with the regulations in force being complied with. These types of problems are normally solved by classical methods of linear programming. However, the implementation of solutions thus obtained is practically hardly feasible. This is due to difficulties in observing exact times of vessel entries into the fairway, maintaining exactly the expected times of passage along particular fairway sections. Therefore, it becomes necessary to account for inaccurate vessel entry and times of passing particular sections. Consequently, an optimisation problem in this context naturally fits in the format of problems of linear programming with fuzzy coefficients. This approach enables a more flexible formulation of an optimisation problem. From the point of view of the solutions obtained, the interpretation of fuzzy inequalities in the system of constraints is of much importance. The article presents solutions to the vessel traffic optimisation problem with the use of various interpretations of fuzzy inequalities. The calculation results are shown. These refer to vessel traffic in the Szczecin-Swinoujscie fairway. The results have been interpreted and conclusions have been drawn. INTRODUCTION
Źródło:
Annual of Navigation; 2003, 6; 65-79
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of the probablistic-fuzzy method for assessment of a dangerous situation of a ship manoeuvring in a restricted area
Autorzy:
Pietrzykowski, Z.
Gucma, L.
Powiązania:
https://bibliotekanauki.pl/articles/320591.pdf
Data publikacji:
2002
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
nawigacja
bezpieczeństwo nawigacyjne
manewrowanie
statki
navigation
safety navigation
manoeuvring
ships
Opis:
This article presents practical application of the probabilistic-fuzzy method for assessment of the safety of a ship manoeuvring in fairways. The method, based on the probabilistic risk analysis and elements of fuzzy logic, allows to account for a situation of threatened safety and a situation when a navigator intuitively thinks that the safety of manoeuvring ship is threatened. The probability of grounding of a ship manoeuvring in a fairway bend was determined. Then, with the use of experts’ knowledge and tools of fuzzy logic the probability of a dangerous situation was determined. Two different approaches, discussed in Part 1, have been applied for the determination of the probability. The results were compared.
Źródło:
Annual of Navigation; 2002, 4; 59-70
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Theoretical basis of the probalilistic-fuzzy method for assessment of dangerous situation of a ship manoeuvring in a restricted area
Autorzy:
Pietrzykowski, Z.
Gucma, L.
Powiązania:
https://bibliotekanauki.pl/articles/320942.pdf
Data publikacji:
2001
Wydawca:
Polskie Forum Nawigacyjne
Tematy:
nawigacja
manewrowanie
statki
bezpieczeństwo nawigacyjne
navigation
manoeuvring
ships
safety navigation
Opis:
The paper presents theoretical basis of the probabilistic-fuzzy method for assessing the safety of a ship manoeuvring on fairways. The method allows to account for such different states / conditions as the danger to the safety and the intuition that the safety of a ship manoeuvre is threatened, based on the probabilistic analysis of risk and elements of fuzzy logic. A dangerous navigational situation is defined as a fuzzy event. Two methods of determining the probability of a fuzzy event occurrence are presented. The results are compared with those obtained from a quantitative method of safety assessment based on probabilistic methods.
Źródło:
Annual of Navigation; 2001, 3; 111-125
1640-8632
Pojawia się w:
Annual of Navigation
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-6 z 6

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