International Ferry and RORO Ship Simulation in Eastern Asia Using Intermodal Freight Flow Model

2012 ◽  
Vol 452-453 ◽  
pp. 760-767
Author(s):  
Ryuichi Shibasaki ◽  
Toshihisa Fujiwara
Keyword(s):  
Simulation Model ◽  
Flow Model ◽  
Mutual Recognition ◽  
Eastern Asia ◽  
Short Sea Shipping ◽  
The Real ◽  
Maritime Shipping ◽  
Intermodal Freight ◽  
Freight Flow

This paper develops a simulation model to include the short-sea shipping (SSS) on the intermodal freight flow model the author already developed, in order to measure an impact of policy that encourages the utilization of the SSS. The developed model is applied to the real shipping network connecting the northern Kyushu area in Japan with China and Korea; as a result, the model reproduces the actual maritime shipping market well, and some implications are acquired such that in order to advance utilization of the SSS, a kind of drastic policy such as mutual recognition of chassis is needed.

Experimental Studies of Sedimentation Basin Dynamics

1977 ◽  
Vol 12 (1) ◽  
pp. 77-90
Author(s):  
J.F. Cordoba-Molina ◽  
P.L. Silveston ◽  
R. R. Hudgins
Keyword(s):  
Dynamic Response ◽  
Froude Number ◽  
Flow Model ◽  
Experimental Studies ◽  
Densimetric Froude Number ◽  
Number Range ◽  
The Real ◽  
Highly Correlated ◽  
Sedimentation Basins ◽  
Simple Flow

Abstract A simple Flow Model is proposed to describe the dynamic response of sedimentation basins. The response predicted by this model is linear as opposed to the real response of the basin which is nonlinear. However, the real response of the basin is highly correlated with its densimetric Froude number, and as a consequence our linear model effectively predicts the response of the basin in a restricted densimetric Froude Number range. Our experiments show that the response of the basin becomes more sluggish and erratic as the densimetric Froude number decreases.

scholarly journals A Stochastic Simulation Model for the Optimization of the Taxi Management System

2019 ◽  
Vol 11 (14) ◽  
pp. 3838
Author(s):  
Aleksander Król ◽  
Małgorzata Król
Keyword(s):  
Simulation Model ◽  
Real Number ◽  
Service Level ◽  
Critical Number ◽  
System Behavior ◽  
Taxi Drivers ◽  
The Real ◽  
Incomplete Knowledge ◽  
Stochastic Simulation Model ◽  
Queue Theory

The paper presents a simplified simulation model of the operation of a taxi system. The model retains the main features of a real taxi transportation system and despite its simplicity examines the system behavior in different conditions. It was shown that for every request generation rate a critical number of taxis in disposal could be determined. If the real number of taxis is lower than the critical number, the queue of pending requests grows in an unlimited way. On the other hand, if the real number of taxis is significantly higher, the service level is clearly not better and leads to the waste of taxi drivers’ time and fuel. The presented model can be regarded as a queue system; therefore, the well-known queue theory is used to describe its nature. However, this approach has some practical limitations coming from incomplete knowledge on real transportation demands, which additionally undergo significant fluctuations. A method, which optimizes the assignment of vacant taxis to the pending requests was also introduced. It was proven that this method mitigated the influence of the above-mentioned limitations.

Realistic Spatial Backcloth is not that Important in Agent Based Simulation Research

2011 ◽  
pp. 19-34 ◽  
Author(s):  
Henk Elffers ◽  
Pieter Van Baal
Keyword(s):  
Simulation Model ◽  
Simulation Studies ◽  
Spatial Simulation ◽  
Agent Based Simulation ◽  
Simulation Research ◽  
Agent Based ◽  
The Real ◽  
Gis Tools ◽  
Perceptual Deterrence ◽  
Real City

This chapter considers whether it is worthwhile and useful to enrich agent based spatial simulation studies in criminology with a real geographical background, such as the map of a real city? Using modern GIS tools, such an enterprise is in principle quite feasible, but we argue that in many cases this course is not only not producing more interesting results, but in fact may well be detrimental for the real reason of doing criminal simulation studies, which is understanding the underlying rules. The argument is first outlined in general, and then illustrated in the context of a given example of the ThESE perceptual deterrence simulation model (Van Baal, 2004), a model that actually is using a simple checkerboard as its spatial backcloth.

scholarly journals The simulation model of the grapple loader operation

2019 ◽  
Vol 252 ◽  
pp. 05021
Author(s):  
Karol Tucki ◽  
Anna Bączyk ◽  
Remigiusz Mruk ◽  
Izabela Wielewska ◽  
Piotr Radziszewski
Keyword(s):  
Simulation Model ◽  
Shock Absorber ◽  
Operating Conditions ◽  
Real Object ◽  
Slight Reduction ◽  
The Real ◽  
Additional Load ◽  
Hydraulic Cylinders ◽  
Matlab Package

The main objective of the study was to develop a simulation model for the operation of the T-214 CYKLOP grapple loader using the MATLAB package. The created model allowed assessment of the behaviour of the real object in the operating conditions under variable loads and in the system overload. The simulation of the boom operation was carried out in four combinations: (1) at power take-off speed = 1000 rpm without load and (2) at 1000 kg load, (4) at power take-off speed = 540 rpm without load and (4) at 1000 kg load. The results show that the system works properly. The correct functioning of the system is evidenced by the fact that changes in force and acceleration occur on both pistons when only one of the cylinders is operating (the cylinder at rest acts as a shock absorber for the forces resulting from the inertia of the arms and the load). Apart from the increased forces on the pistons of the hydraulic cylinders, the additional load resulted in a slight reduction in acceleration values and an increase in the time needed to change the arm tilt angles.

scholarly journals Comparison of the Datar-Mathews Method and the Fuzzy Pay-Off Method through Numerical Results

2016 ◽  
Vol 2016 ◽  
pp. 1-7 ◽  
Author(s):  
Mariia Kozlova ◽  
Mikael Collan ◽  
Pasi Luukka
Keyword(s):  
Monte Carlo Simulation ◽  
Monte Carlo ◽  
Simulation Model ◽  
Real Option ◽  
Fuzzy Numbers ◽  
Numerical Results ◽  
Option Valuation ◽  
The Real ◽  
Valuation Methods ◽  
Real Option Valuation

The paper compares numerically the results from two real option valuation methods, the Datar-Mathews method and the fuzzy pay-off method. Datar-Mathews method is based on using Monte Carlo simulation within a probabilistic valuation framework, while the fuzzy pay-off method relies on modeling the real option valuation by using fuzzy numbers in a possibilistic space. The results show that real option valuation results from the two methods seem to be consistent with each other. The fuzzy pay-off method is more robust and is also usable when not enough information is available for a construction of a simulation model.

Study on Hardware-in-the-Loop-Simulation of Hydroturbine Governing System

2010 ◽  
Vol 39 ◽  
pp. 395-398 ◽  
Author(s):  
Hai Hui Song ◽  
Yun Min Xie ◽  
Wei You Cai
Keyword(s):  
Simulation Model ◽  
Real Time ◽  
Hardware In The Loop ◽  
Real Time Simulation ◽  
Testing Platform ◽  
The Real ◽  
Governing System ◽  
Time Simulation

This paper introduces a testing mothod about hydroturbine governing system based on dSPACE hardware-in-the-loop-simulation. PID parameters are adjusted by hardware-in-the-loop -simulation. The results of the simulation show that it can provide simple, intuitive simulation model, and make parameters adjusting more intuitive and easier. The validity of the testing platform have been testified by the results of real-time simulation and hardware-in-the-loop-simulation. The superiority of controldesk in the real-time simulation is prominent.

scholarly journals Developing a Simulation Model for Autonomous Driving Education in the Robobo SmartCity Framework

2021 ◽  
Vol 7 (1) ◽  
pp. 49
Author(s):  
Daniel Juanatey ◽  
Martin Naya ◽  
Tamara Baamonde ◽  
Francisco Bellas
Keyword(s):  
Artificial Intelligence ◽  
Simulation Model ◽  
Smart City ◽  
State Of The Art ◽  
Autonomous Driving ◽  
The Real ◽  
Educational Framework ◽  
Real Model ◽  
Teachers And Students

This paper focuses on long-term education in Artificial Intelligence (AI) applied to robotics. Specifically, it presents the Robobo SmartCity educational framework. It is based on two main elements: the smartphone-based robot Robobo and a real model of a smart city. We describe the development of a simulation model of Robobo SmartCity in the CoppeliaSim 3D simulator, implementing both the real mock-up and the model of Robobo. In addition, a set of Python libraries that allow teachers and students to use state-of-the-art algorithms in their education projects is described too.

Numerical, Experimental and Full-Scaled Investigation on the Current Generation System of the New Deepwater Offshore Basin

2010 ◽  
Author(s):  
Tiebing Shan ◽  
Haining Lu ◽  
Jianmin Yang ◽  
Runpei Li
Keyword(s):  
Numerical Simulation ◽  
Simulation Model ◽  
Model Test ◽  
Current Velocity ◽  
Model Tests ◽  
Constant Current ◽  
Generation System ◽  
Current Generation ◽  
The Real ◽  
Current Flows

The new deepwater offshore basin was completed in 2008 at Shanghai Jiao Tong University. The current generation system is considered to be one of the most important and challenging equipments in the basin. A lot of work has been conducted to investigate the characteristics of current generation system in the new deepwater offshore basin. Main particulars and equipments of the new basin are described in detail. Some ocean deepwater tests conducted in this new basin are also introduced. Numerical simulation, model test and full-scaled measurements in the real basin were conducted to investigate the hydraulic performances of deepwater current generation system in detail. It can be concluded that the current generation system has satisfactory performances by different methods. Uniform and constant current flows with different current velocities can be generated in this new basin. Several typical current velocity profiles can also be modeled in measuring area of the basin. It indicates that the hydraulic performances of the current generation system can satisfy requirement of offshore model tests in deepwater.

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