Component-based simulation for a reconfiguration study of transitic systems

This paper is organized as follows. Part A presents the context of reconfiguring transitic systems and the main idea in implementing the decision step. It comprises sections 1 to 3. Section 3 presents an example that illustrates the concepts presented in the next sections. Parts B and C express the models and principles used to simulate transitic systems, the result of which will be helpful for choosing the new configuration. Part B focuses mainly on models. It comprises sections 4 to 6. Part C focuses mainly on simulation principles. It comprises sections 7 to 10

Simulation framework of port operation and recovery planning

This study proposes a framework of simulation tool suites for ports to evaluate their response to disaster crisis and port security policies. The focus is containerized cargos that are imported through ports in the U.S. with final destinations also in the U.S. A crisis, such as a man-made or natural disaster, may cause a delay at the seaport. The down time of ports may result in severe economic losses. Thus, when a seaport cannot normally operate, it is important to minimize the impact caused by the disrupted freight flow. Port security policies also have a significant impact on the port operation efficiency. This model developed in this study evaluates the performance of re-routing strategies under different crisis scenarios and can help the user to find an effective re-routing decision and analyze security policies of a port. This model also analyzes security policies of the simulation port

Heuristic container placement algorithms

Thesis (Master)--Izmir Institute of Technology, Computer Engineering, Izmir, 2003Includes bibliographical references (leaves: 56-58)Text in English; Abstract: Turkish and Englishviii, 72 leavesWith the growth of transportation over sea; defining transportation processes in a better way and finding ways to make transportation processes more effective have become one of the most important research areas of today. Especially in the last quartet of the previous decade, the computers had become much powerful tools with their impressive amount of data processing cababilites. It was imminent that computers had begun taking serious roles in the system development studies. As a result; constructing models for the processes in container terminals and processing the data with the computers create opportunities for the automation of various processes in container terminals. The final step of these studies is the full automation of terminal activities with software packages that combine various functions focused on various processes in a single system.This study is about a project that had been made for a container terminal owned by a special company. During this study; there had been discussions with experts about the subject, and container handling processes in the terminal had been analyzed in order to define the main structure of the yard management software to be created.This study focuses on the container handling activities over the yard space so as to create a basis for a computer system that will take part in the decisions during the container operations. Object oriented analysis and design methods are used for the definition of the system that will help the decisions in the yard operations. The optimization methodology that will be the core of the container placement decisions is based on using different placement patterns and placement algorithms for different conditions. These placement patterns and algorithms are constructed due to the container handling machinery that was being used in the terminal that this study has been made for

A simulation analysis of the container handling process at Husøy port : the effect of a new container terminal

In this thesis we have been using simulation as a method to analyse the structural changes at Karmsund Container Terminal. By measuring the different steps in the container handling process, we were able to evaluate how the structural changes affected the latter process. Structural changes can in this thesis be defined as the construction of a new container terminal, including relocation of the various facilities and expanding the quayside. The simulation also made it possible to do a sensitivity analysis on the ship activity at the terminal. In this way we could evaluate how the structural changes affected the container terminals ability to handle an increased number of ship arrivals, as well as a growth in the container throughput at the terminal. First we will be introducing relevant theory for this research. Parts of previous literature were used in the development of the simulation model. The rest is presented as a basis for the overall evaluation of the result. Our primary data were collected through interviews and observation when visiting the container terminal. This information has been crucial for the development of the simulation model, making sure we captured a realistic picture of the situation. The secondary data were collected through historical statistics acquired from Karmsund Port Authorities database. Data concerning the terminal activities for the last 9 months were collected and processed using different goodness of fit tests. The distributions developed made it possible to utilize the full extent of the simulation program by capturing the stochastic dynamic aspects of the port activities. The results of the simulation told us that the structural changes potentially could affect the overall cargo handling process in a positive way. Leading to increased efficiency and an overall more stable operation. We also found the new terminal better suited to handle the expected traffic growth to the container terminal.nhhma

A simulation analysis of the container handling process at Husøy port : the effect of a new container terminal

In this thesis we have been using simulation as a method to analyse the structural changes at Karmsund Container Terminal. By measuring the different steps in the container handling process, we were able to evaluate how the structural changes affected the latter process. Structural changes can in this thesis be defined as the construction of a new container terminal, including relocation of the various facilities and expanding the quayside. The simulation also made it possible to do a sensitivity analysis on the ship activity at the terminal. In this way we could evaluate how the structural changes affected the container terminals ability to handle an increased number of ship arrivals, as well as a growth in the container throughput at the terminal. First we will be introducing relevant theory for this research. Parts of previous literature were used in the development of the simulation model. The rest is presented as a basis for the overall evaluation of the result. Our primary data were collected through interviews and observation when visiting the container terminal. This information has been crucial for the development of the simulation model, making sure we captured a realistic picture of the situation. The secondary data were collected through historical statistics acquired from Karmsund Port Authorities database. Data concerning the terminal activities for the last 9 months were collected and processed using different goodness of fit tests. The distributions developed made it possible to utilize the full extent of the simulation program by capturing the stochastic dynamic aspects of the port activities. The results of the simulation told us that the structural changes potentially could affect the overall cargo handling process in a positive way. Leading to increased efficiency and an overall more stable operation. We also found the new terminal better suited to handle the expected traffic growth to the container terminal.nhhma