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    Wyświetlanie 1-13 z 13
    Tytuł:
    Simulation Model on Determining of Port Capacity and Queue Size: A Case Study for BOTAS Ceyhan Marine Terminal
    Autorzy:
    Uğurlu, O.
    Yüksekyıldız, E.
    Köse, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/116125.pdf
    Data publikacji:
    2014
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Simulation Model
    port capacity
    Queue Size
    Marine Terminal
    Opis:
    Simulation programs are a useful and effective tool for analysis of projects requiring high investment costs, studies to improve the functioning of an existing system, and the analysis of the effectiveness and efficiency. They make it possible to control of system or substructure by less investment cost. Simulation models are often used in port modeling, capacity analysis, queue size and port efficiency. In this study, simulation model of loading terminals of the BOTA? Ceyhan pipeline were done. For this reason, AWESIM simulation program was used. This modeling evaluated for 365 days and each ship has approached the port with intervals of 12-24, 12-36, 24-36 and 24-48 hours. Stormy days in a year have been assumed as 30. Each ship demands trailer and pilotage service when approaching and leaving the port. In this simulation model; ship types, capacities, coming frequencies, loading times, maneuvering time and transportation capacity of BOTA? Ceyhan Marine Terminal were investigated.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2014, 8, 1; 143-150
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Simulation Model of Container Land Terminals
    Autorzy:
    Kuznetsov, A. L.
    Kirichenko, A. V.
    Eglit, J. J.
    Powiązania:
    https://bibliotekanauki.pl/articles/116236.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    marine simulations
    simulation model
    container land terminals
    container terminal
    transport infrastructure
    object-oriented model
    terminal simulation
    container
    Opis:
    The simulation as a tool for the design of port and terminals has emerged as an answer for the demand to enhance the quality and reliability of the project results. Very high costs of the project solution implementation and practically total lack of liquidity of transport infrastructure objects always induced the immense commercial risks in the terminal business. Lately these risks have multiplied significantly due to rapid changes on the global and regional markets of transport services. Today, many experts come to see this volatility as an indicator of the next phase in development of the global trade system and the derivative cargo transportation system, specifically the state of temporal saturation. The shift of the global goods volumes from quick and steady growth to relatively small fluctuations around constant values causes quick oscillations in re-distribution of demand over the oversized supply. This new business and economic environment seriously affected the paradigm of transport terminal design and development techniques. The new operational environment of terminals put a request for the designers to arrange the results not in terms of “point”, but in terms of “functions”. Eventually it resulted in development of the modern object-oriented model approach. The wide spread of this approach witnesses the objective demand for this discipline, while in many aspects it remains in the intuitive (pre-paradigmal) phase of its development. The main reason for it is in the problem definition itself, which usually is formulated as the simulation of a given terminal. At the same time, the task is to assess the operational characteristics of the terminal engaged in processing of a given combination of cargo flows. Consequently, it is not the terminal that should be simulated, but the processes of cargo flows handling performed by this terminal under investigation. Another problem that restricts the practical spread of simulation is in the model adequacy. A model which adequacy is not proved has no gnoseological value at all. The paper describes the approach aimed at development of the models with the features discussed above.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 2; 321-326
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Hydrodynamics of DARPA SUBOFF submarine at shallowly immersion conditions
    Autorzy:
    Efremov, D. V.
    Milanov, E. M.
    Powiązania:
    https://bibliotekanauki.pl/articles/115979.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    hydrodynamics
    froude number
    Defense Advanced Research Projects Agency (DARPA)
    submarine
    submarine model
    suboff model
    shallowly immersion conditions
    submarine simulation model
    Opis:
    Recently, the submarine missions are often evolving into operating to littoral areas, which require operating in shallow water. Such shallow water operations strongly contrast with the traditional ones due to the effect of a close to free water surface expressed mainly by surface suction force. This influence is particularly important for submarine maneuverability accounting for restricted area available. The prediction of submarine behavior in similar conditions requires adequate mathematical model and understanding of the additional hydrodynamic load generated near the surface region. The paper is aimed for better understanding of these issues and relating to development of a submarine simulation model, the experimental program of towing and PMM captive tests of DARPA Suboff submarine model were conducted at a towing tank. The influence of phenomenon such as effect of a close to free surface and Froude number at hydrodynamic forces and moments including control surfaces effectiveness were investigated and also was estimated directional stability of motion in horizontal plane.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 2; 337-342
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Box Selectivity in Different Container Cargo-handling Systems
    Autorzy:
    Kuznetsov, A. L.
    Kirichenko, A. L.
    Semenov, A. D.
    Powiązania:
    https://bibliotekanauki.pl/articles/116336.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    cargo handling
    box selectivity
    cargo handling system
    container
    container cargo-handling system
    simulation model
    theoretical selectivity
    artificial intelligence
    Opis:
    The box selectivity in operational stack of container terminal is a quite common and long studied question. The pure random choice is governed by the theory of probability offering some combinatorial estimations. The introduction of operational rules like import/export separation, storage by shipping lines, sorting by rail or truck transportation etc., as well as the most notorious ‘sinking’ effect, i.e. covering of boxes arrived earlier by next cargo parties – all these blur the clear algebraiс picture and lead to appearance of many heuristic outlooks of the problem. A new impetus to this problem in last decades was given by the rapid development of IT, AI and simulation techniques. There are quite many examples of the models described in the scientific publication reflecting many real and arbitrary terminals, which embed very advanced and complicated mechanisms reflecting selected features and strategies. Unfortunately, these models usually are created ad hoc, with some pragmatic objectives and under the demand of closest possible proximity to the simulating objects. There are much less models designated to pure scientific study of the deep inner mechanisms responsible for the primal behavior of the operating container stack, enabling to introduce step by step new rules and restrictions, providing regular proving of every next stage’s adequacy and easy to use. This paper describes one attempt of this kind to create a new theoretical tool to put into the regular toolkit of the container terminal designer. The study starts with mathematical (combinatorial) considerations, proceeds with some restrictions caused by physical and technological characteristics, and ends up with the simulation model, which adequacy is confirmed by practical results.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 4; 797-801
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The H2 and Robust Hinf Regulators Applied to Multivariable Ship Steering
    Autorzy:
    Gierusz, W.
    Powiązania:
    https://bibliotekanauki.pl/articles/116961.pdf
    Data publikacji:
    2009
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Dynamic Ship Positioning (DSP)
    Multivariable Ship Steering
    Ship Steering
    Multivariable Regulators
    Simulation Model
    Open-Loop System
    Ship Handling Research and Training Centre at Ilawa
    Polska
    Manoeuvring
    Opis:
    The main goal of this task was a calculation of the two multivariable regulators for precise steering of a real, floating, training ship. The first one minimized the H2 norm of the closed-loop system. The second one was related to the Hinf norm. The robust control approach was applied in this controller with the usage of the structured singular value concept. Both controllers are described in the first part of the paper. Details of the training vessel and its simulation model then are presented. The state model of the control object obtained via identification process is described in the next section. This model with matrices weighting functions was the base for creation of ’the augmented state model’ for the open-loop system. The calculation results of the multivariable controllers is also shown in this section. Several simulations were performed in order to verify the control quality of both regulators. Exemplary results are presented at the end of this paper together with final remarks.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 4; 431-440
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Model of the random phase of signal E6 of the Galileo Satellite Navigation System
    Autorzy:
    Džunda, M.
    Čikovský, S.
    Melniková, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201441.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    model
    simulation
    random phase
    signal E6
    satellite navigation system
    Galileo
    random phase model
    useful signal
    Opis:
    The aim of this paper was to describe the random phase of the E6 signal, the Galileo satellite navigation system. Based on the available information, mathematical models of the measurement signals of the Galileo system were created. The frequencies of individual signals were determined and their structure visualized. A block diagram of the generation of individual signals is also shown. The main contribution of the paper is the creation of a random phase model of the E6 signal from the Galileo system. In accordance with the technical data of the Galileo system, the parameters of the random phase model were determined. The simulation results confirmed that the frequency instability of the continuous signal E6 n received from the satellite is a stationary process. The short-term stability of the frequency ranges from 10-13 to 10-14. The simulation results confirmed that the Doppler effect significantly affects the random phase of the E6 signal. This phenomenon can affect the results of navigation measurements using the E6 signal. The modeling and simulation results of the random phase of the E6 signal presented in the paper can be used to evaluate the immunity of the Galileo navigation system to interference.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 1; 61--68
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Virtual Model of Deep Water Container Terminal T2 in Port Gdańsk
    Autorzy:
    Zwolan, P.
    Czaplewski, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/116766.pdf
    Data publikacji:
    2018
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Port of Gdansk
    Deepwater Container Terminal (DCT) in Gdansk
    virtual model
    deep water terminal
    container terminal
    virtual model of terminal
    virtual model of DCT2
    computer simulation
    Opis:
    The level of education of seafarers currently depends among other things on the use of simulators in the training process. The reliability of the computer simulation depends on several factors such as own ship models or virtual training areas. Currently available software on the market allows you to edit and create virtual areas for specific manoeuvring trials. Having a faithful copy of a real basin is an important element of harbour pilots courses or in carrying out a wide range of navigational analyses. In this paper the authors describe the process of creating Container Terminal T2 at DCT Gdańsk in the simulator environment.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2018, 12, 3; 551-555
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Effect of ship neural domain shape on safe and optimal trajectory
    Autorzy:
    Lisowski, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/24201475.pdf
    Data publikacji:
    2023
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    artificial neural network model
    method for optimization
    dynamic programming method
    ship safety domain
    safe ship control
    path planning
    multi-object decision model
    computer simulation
    Opis:
    This article presents the task of safely guiding a ship, taking into account the movement of many other marine units. An optimally neural modified algorithm for determining a safe trajectory is presented. The possible shapes of the domains assigned to other ships as traffic restrictions for the particular ship were subjected to a detailed analysis. The codes for the computer program Neuro-Constraints for generating these domains are presented. The results of the simulation tests of the algorithm for a navigational situation are presented. The safe trajectories of the ship were compared at different distances, changing the sailing conditions and ship sizes.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2023, 17, 1; 185--191
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The Implementation of Oil Spill Costs Model in the Southern Baltic Sea Area to Assess the Possible Losses Due to Ships Collisions
    Autorzy:
    Gucma, L.
    Goryczko, E.
    Powiązania:
    https://bibliotekanauki.pl/articles/117188.pdf
    Data publikacji:
    2008
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    pollution
    Environment Protection
    Oil Spill
    Baltic Sea
    Ships Collision
    Assessment of Losses
    Simulation Method
    Oil Spill Costs Model
    Opis:
    The paper presents an attempt to assessment of losses due to oil spills caused by ships collisions in the Southern Baltic Sea area. To assess the losses the data from two models were used. First of them is simulation model of ships collision with consideration of oil spills developed and the second is the model of oil spill cleanup cost is applied without consideration of environmental conditions influence.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2008, 2, 4; 405-407
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    CFD Based Hull Hydrodynamic Forces for Simulation of Ship Manoeuvres
    Autorzy:
    Tabaczek, T.
    Gornicz, T.
    Kulczyk, J.
    Powiązania:
    https://bibliotekanauki.pl/articles/117623.pdf
    Data publikacji:
    2009
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Manoeuvring
    Simulation of Ship Manoeuvres
    Equations of Ship's Movement
    Hydrodynamic Forces
    CFD Computations
    Hydrodynamic Characteristics
    Ship's Motion
    mathematical model
    Opis:
    There have been developed numerous mathematical models describing the motion of a ship. In opinion of present authors the CFD is mature enough to determine with confidence the hydrodynamic characteristics necessary to simulate ship manoeuvres. In this paper the authors present the attempt to determine the hull hydrodynamic forces using the results of CFD computations of ship flow. Results show qualitative agreement with reference data and reveal shortcomings due to simplifying assumptions applied in CFD computations.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2009, 3, 1; 31-35
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Smart system to coordination of the available response resources in an oil spill leakage
    Autorzy:
    Panaitescu, M.
    Panaitescu, F. V.
    Powiązania:
    https://bibliotekanauki.pl/articles/116323.pdf
    Data publikacji:
    2019
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    oil spill
    oil spill leakage
    oil spill response
    response to pollution
    mathematical model
    marine pollution
    response resources
    applying simulation study
    Opis:
    A smart solution for assessing the consequences of pollution on the coast, on flora and fauna but also by accounting for the total costs of the equipment used in the response to pollution is a system for assessing, coordinating and simulating the risk situation with the help of a mathematical model implemented on a simulator. The mathematical model for the simulation of the event of pollution is the latest generation and take into account all the meteorological factors of the sea and air, as well as all the physico-chemical parameters of the substances involved (dispersion, surface tension). The simulator is used for the realistic modeling of a crisis situation and it is useful for both marine officers and emergency situation officials. The simulator will be used as an educational instrument enabling the interactive study of the different emergency situations. In this paper we present the simulation of incident and the creation of response resources. The scenario incident is for KAPTAN M cruise ship that left the tourist port of TOMIS Constanta, Romania, having on board 20 passengers and a number of 15 crew members, and which collided with the oil ship EVIA Oil FIVE, having on board the quantity of 4200 MT crude oil. As a result of the collision, the passenger ship suffered a breach (water hole), on the starboard board, breach by which the ship began to ambarce sea water and in the car compartment a fire was produced. Containment and recovery of an oil spill during the exercise will be simulated through activation and control of response resources. The resources involved in the operations are divided into: platforms, equipment and personnel. The results of simulation is the list of response resources specified in the scenario together with their parameters, which can be exported into a text file. With this simulation tools you can efficiently appreciate the cost of resources in due time, avoiding material and human damage.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2019, 13, 1; 205-212
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Monte Carlo simulation approach to determination of oil spill domains at port and sea water areas
    Autorzy:
    Dąbrowska, E.
    Kołowrocki, K.
    Powiązania:
    https://bibliotekanauki.pl/articles/116316.pdf
    Data publikacji:
    2020
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    oil spills domains
    Monte Carlo simulation
    determination of oil spill
    port area
    sea water areas
    oil spill
    Semi-Markov model
    hydro-meteorological conditions
    Opis:
    Monte Carlo simulation method of oil spill domains determination based on the probabilistic approach to the solution of this problem is proposed. A semi-Markov model of the process of changing hydro-meteorological conditions is constructed and its parameters are defined. The general stochastic model of oil spill domain movement for various hydro-meteorological conditions is described. Monte Carlo simulation procedure is created and applied to generating the process of changing hydro-meteorological conditions and the prediction of the oil spill domain movement impacted by these changes conditions.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2020, 14, 1; 59-64
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Model of Interaction of Water and Tank’s Structure in Sloshing Phenomenon
    Autorzy:
    Krata, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/117117.pdf
    Data publikacji:
    2008
    Wydawca:
    Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
    Tematy:
    Safety and Security in Sea Transportation
    Sloshing Phenomenon
    Water Tank
    Model of Interaction
    Experimental Research
    Numerical Simulation
    Equations of Ship's Movement
    Heeling Moment Calculations
    Opis:
    The paper presents the model of interaction between ship’s tank structure and water contained in the tank. The experimental investigation of sloshing loads in ships’ tank is characterized and the need for description of mutual influence is underlined. The model of interaction is made up for rectangular ship’s tanks and it is assumed to be in time-domain and nonlinear. The solution is based on the data obtained by the experimental research and numerical simulation. The study may be the contribution to more sophisticated estimation of ship’s stability than it takes place nowadays.
    Źródło:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation; 2008, 2, 4; 389-395
    2083-6473
    2083-6481
    Pojawia się w:
    TransNav : International Journal on Marine Navigation and Safety of Sea Transportation
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-13 z 13

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