Temat: terminal simulation

Skocz do pozycji: 1.

Tytuł:: Simulation Model of Container Land Terminals
Autorzy:: Kuznetsov, A. L.
Kirichenko, A. V.
Eglit, J. J.
Tematy:: marine simulations
simulation model
container land terminals
container terminal
transport infrastructure
object-oriented model
terminal simulation
container; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/116236.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Simulation of a Container Terminal and it’s Reflect on Port Economy
Autorzy:: Elentably, A.
Tematy:: container terminal
port economy
simulation of a container terminal
discrete event simulation (DES)
port simulation software (PORTSIM)
handling equipment
mobile harbour crane (MHC)
gantry crane (GC); Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/116308.pdf Link otwiera się w nowym oknie
Opis:: The combination between the design and project of container terminals and the reflect on port’s economy may be carried out through two main approaches: optimization or simulation. Although the approaches based on optimization models allow a more elegant and compact formulation of the problem, simulation models are mainly based on discrete event simulation (DES) models and help to achieve several aims: then measure this impact on port economy before and after implemented this updating overcome mathematical limitations of optimization approaches, support and make computer-generated strategies/policies more understandable, and support decision makers in daily decision processes through a “what if” approach. Several applications of DES models have been proposed and simulation results confirm that such an approach is quite effective at simulating container terminal operations. Most of the contributions in the literature develop object oriented simulation models and pursue a macroscopic approach which gathers elementary handling activities (e.g. using cranes, reach stackers, shuttles) into a few macro-activities (e.g. unloading vessels: crane-dock-reach stacker-shuttle-yard), simulate the movement of an “aggregation” of containers and therefore do not take into account the effects of container types (e.g. 20’ vs 40’, full vs empty), the incidence of different handling activities that may seem similar but show different time duration and variability/dispersion (e.g. crane unloading a container to dock or to a shuttle) and the differences within the same handling activity (e.g. stacking/loading/unloading time with respect to the tier number). Such contributions primarily focus on modeling architecture, on software implementation issues and on simulating design/real scenarios. Activity duration is often assumed to be deterministic, and those few authors that estimate specific stochastic handling equipment models do not clearly state how they were calibrated, what data were used and what the parameter Values are. Finally, no one investigates the effects of different modeling hypotheses on the simulation of container terminal performances. The focus of this paper is on the effects that different hypotheses on handling equipment models calibration may have on the simulation (discrete event) of container terminal performances. Such effects could not be negligible and should be investigated with respect to different planning horizons, such as strategic or tactical. The aim is to propose to analysts, modelers and practitioners a sort of a guideline useful to point out the strengths or weaknesses of different approaches. Drawing on the model architecture which will be affected on port economics.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 3.

Tytuł:: Multiequation models as diagnostic tools for measuring the operational fluidity of the container handling terminal
Autorzy:: Zadrąg, R.
Pac, B.
Tematy:: multi-equation models
simulation
container terminal
modele wielorównaniowe
symulacja
terminal kontenerowy; Pokaż więcej
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Powiązania:: https://bibliotekanauki.pl/articles/2073606.pdf Link otwiera się w nowym oknie
Opis:: The article presents the continuation of the authors’ research on the problem of the operational fluidity of cargo handling sea terminals, based on the example of the DCT. The article presents a solution based on the multiequation models and applied to analyze the operational fluidity of terminals in the transshipment and feeder relation. To provide a solution to the problem of the functioning of sea-land supply chains at the terminal, the GRETL software has been applied.
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 4.

Tytuł:: Determination of the wind speed limits causing the break away of the vessel from jetty p in naftoport : simulation study
Autorzy:: Formela, K.
Gil, M.
Śniegocki, H.
Wilczyński, P.
Tematy:: mooring
tankers
simulation
oil terminal
Naftoport; Pokaż więcej
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Powiązania:: https://bibliotekanauki.pl/articles/244147.pdf Link otwiera się w nowym oknie
Opis:: The safety of the tanker during the loading operations carried out in the oil terminal is influenced by many factors. Based on the observations of port personnel and weather analyses in that area it was found that for Naftoport one of the most important factors affecting the security of the tanker is the wind, and more precisely – its direction and speed. Less important are accompanying waves and generated by it variable and periodic wind current. In this selected area of the Baltic Sea the direction and speed of wind change very dynamically depending on the activity of pressure patterns, which are very closely related to the occurrence of seasons. For the purpose of the article simulations were carried out of variable wind speeds, from directions causing the breakaway of the ship from the jetty, with an application of the model of the tanker in the least favourable load condition. The results obtained – the load in the mooring ropes from simulation tests were compared with the requirements of the OCIMF (Oil Companies International Marine Forum), determining the methodology of performing calculations of these forces for the selected type of tanker.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 5.

Tytuł:: Simulation model for maritime container terminal
Autorzy:: Rusca, F.
Popa, M.
Rosca, E.
Rusca, A.
Tematy:: container terminal
simulation model
maritime transport
terminal kontenerowy
model symulacyjny
transport morski; Pokaż więcej
Wydawca:: Politechnika Śląska. Wydawnictwo Politechniki Śląskiej
Powiązania:: https://bibliotekanauki.pl/articles/374149.pdf Link otwiera się w nowym oknie
Opis:: For logistic chains that have a maritime component, the ports transition involves a set of specific operations inside maritime container terminals. This can be cargo handling operations from the terrestrial vehicle in the storage area of ports, from port storage area in the maritime ships, as well as storage operations in the port area and other container terminal activities. Taking into consideration the multi-flow interactions and the non-uniform arrival of vessels and in-land vehicles, discrete event simulation stands as a feasible technique for investigating berthing capacity during the initial planning stage of the terminal or for operative planning of logistic processes at the terminal. If the storage area is analysed as a queuing system, the quality serving attributes could be evaluate. When different distributions for arrival flows of the containers in the maritime container terminal are taken into consideration, the quality serving attributes are difficult to estimate. In our paper, a discrete simulation model is developed in ARENA software for case of a maritime container terminal. The estimation of the general measures of performance for the container port terminals through simulation could provide data for the implementation in the management plans by port administrations.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 6.

Tytuł:: Modelling and simulation methodology for dynamic resources assignment system in container terminal
Autorzy:: Lu, B.
Tematy:: container terminal
resources assignment system
modelling
simulation; Pokaż więcej
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Powiązania:: https://bibliotekanauki.pl/articles/260155.pdf Link otwiera się w nowym oknie
Opis:: As the competition among international container terminals has become increasingly fierce, every port is striving to maintain the competitive edge and provide satisfactory services to port users. By virtue of information technology enhancement, many efforts to raise port competitiveness through an advanced operation system are actively being made, and judging from the viewpoint of investment effect, these efforts are more preferable than infrastructure expansion and additional equipment acquisition. Based on simulation, this study has tried to prove that RFID-based real-time location system (RTLS) data collection and dynamic operation of transfer equipment brings a positive effect on the productivity improvement and resource utilization enhancement. Moreover, this study on the demand for the real-time data for container terminal operation have been made, and operation processes have been redesigned along with the collection of related data, and based on them, simulations have been conducted. As a result of them, much higher productivity improvement could be expected.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 7.

Tytuł:: Simulation Based Lectures for Students in Logistics
Autorzy:: Bjorbæk, C. T.
Berg, Ø.
Schuett, H.
Dushenko, M.
Tematy:: simulation
port operations
container terminal
learning
logistics; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydawnictwo Uniwersytetu Morskiego w Gdyni
Powiązania:: https://bibliotekanauki.pl/articles/342326.pdf Link otwiera się w nowym oknie
Opis:: Automation and digitalization in logistic processes nowadays increase the complexity of logistic systems (supply networks, terminals and warehouses) and leads to highly linked systems. Their dimensioning as well as start-up and optimization of operational processes require technical assistance today. Simulation is used for understanding the behaviour of the seaport terminal and analysing the interaction of the complex processes at the terminal. This paper will show an investigation of the usage of specific port terminal simulator in the education of logisticians at university. It will show the effects of using simulation within the lessons in respect to the understanding of port operation and port simulation.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 8.

Tytuł:: The reloading of a ship in a maritime container terminal as a queuing problem of interacting processes
Autorzy:: Bartosiewicz, Aleksandra
Kucharski, Adam
Tematy:: maritime container terminal
queuing theory
optimization
simulation; Pokaż więcej
Wydawca:: Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Powiązania:: https://bibliotekanauki.pl/articles/58969773.pdf Link otwiera się w nowym oknie
Opis:: In this work, we propose a multi-server queuing system for modeling the processes that occur in a maritime container terminal. In our study, the main operations that take place at the quay and in the yard are first disaggregated into several elementary activities. Then we propose the step-by-step calculation of the times of each operation that influences both the unloading and the loading of a container. Next, we analyze the vessel cycle time while separately investigating the STS (ship to shore) crane cycle time, the RTG (rubber tyred gantry) cycle time, as well as the IMV (internal movement vehicle) transfer time. Finally, we apply two process-driven simulation experiments to the system analysis. The paper demonstrates the proposed model’s effectiveness with data from the BCT Gdynia container terminal. We show that, among others, even with properly planned work of STS cranes and RTGs, there is still a high probability that the quay will become a bottleneck of the described processes.
Dostawca treści:: Biblioteka Nauki

Artykuł

na półce

Skocz do pozycji: 9.

Tytuł:: Methods for estimating vehicle queues at a marine terminal: A computational comparison
Autorzy:: Chen, G.
Yang, Z. Z.
Tematy:: truck queue
container terminal
queueing theory
simulation
regression
teoria kolejek
symulacja
regresja
terminal kontenerowy; Pokaż więcej
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Powiązania:: https://bibliotekanauki.pl/articles/330523.pdf Link otwiera się w nowym oknie
Opis:: A long queue of vehicles at the gate of a marine terminal is a common traffic phenomenon in a port-city, which sometimes causes problems in urban traffic. In order to be able to solve this issue, we firstly need accurate models to estimate such a vehicle queue length. In this paper, we compare the existing methods in a case study, and evaluate their advantages and disadvantages. Particularly, we develop a simulation-based regression model, using the micro traffic simulation software PARAMIC. In simulation, it is found that the queue transient process follows a natural logarithm curve. Then, based on these curves, we develop a queue length estimation model. In the numerical experiment, the proposed model exhibits better estimation accuracy than the other existing methods.
Dostawca treści:: Biblioteka Nauki

Artykuł

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Skocz do pozycji: 10.

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.
Tematy:: Simulation Model
port capacity
Queue Size
Marine Terminal; Pokaż więcej
Wydawca:: Uniwersytet Morski w Gdyni. Wydział Nawigacyjny
Powiązania:: https://bibliotekanauki.pl/articles/116125.pdf Link otwiera się w nowym oknie
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.
Dostawca treści:: Biblioteka Nauki

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