• Journal of the Korean Society of Safety
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• v.8 no.2
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• pp.23-29
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• 1993

In this study, the method of deciding simulation test conditions is developed by computer program compared to actual vehicle test as accurately as possible. These results of analytical test conditions are conformed by simulation test using the brake dynamometer by comparison with test results of actual vehicle. Results of simulation test by these analytical results show good agreement with the vehicle test results. The analytical simulation test conditions provide the input data to brake dynamometer which follows : - each test inertia corresponding to braking deceleration - test condition of input control : brake line pressure - test condition of output control : braking torque

• International Journal of Contents
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• v.17 no.3
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• pp.30-37
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• 2021

This study aimed to determine the effects of simulation learning program using SBAR (Situation, Background, Assessment, Recommendation) techniques on undergraduate nursing students' clinical judgment and communication skills. A quasi-experimental research design (one-group pretest-posttest design) was used in this study. The participants included 88 students from a nursing college. There were statistically significant differences in clinical judgment, communication clarity, and communication confidence between pre-simulation learning using SBAR and post (t=10.32, p<.0001; t=6.05, p=<.0001; t=7.42, p=<.0001). The simulation learning program using SBAR was found to improve nursing students' clinical judgment as well as clarity and confidence in interprofessional communication.

• Journal of the Korea Institute of Military Science and Technology
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• v.19 no.6
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• pp.769-778
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• 2016

Technical approach on the modeling, simulation and experimentation methods, which are applied for developing a constructive simulation and engagement experimentation software for supporting light weight torpedo operational tactics study, is introduced. Conceptual modeling for the weapon engagement and simulation entities, mathematical models for the simulation elements, approach for the design of experimentations are described, and screen shots of the software are also presented as some example results of experimentation and analysis. It is found that the simulation and experimentation results are useful to support and fulfill the mission needs and requests. As a consequence, the technical approach is rated to be appropriate to accomplish the dedicated purpose of the simulation and experiments.

• Proceedings of the SAREK Conference
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• 2008.06a
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• pp.931-936
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• 2008

The need for urban-scale energy simulation is increasing as the world is aware of urgency to decrease $CO_2$ emission. As a bridge of building energy simulation and that of urban, this paper presents a case study to examine the effect of changing resolution of a model in case of complex apartment unit. Also it suggests a modeling strategy to correct differences caused by simplification of the model and evaluate the extent of its use.

• ETRI Journal
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• v.44 no.2
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• pp.313-326
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• 2022

This study presents a noble scheme for distributed and parallel simulations with optimized agent placement for simulation instances. The traditional parallel simulation has some limitations in that it does not provide sufficient performance even though using multiple resources. The main reason for this discrepancy is that supporting parallelism inevitably requires additional costs in addition to the base simulation cost. We present a comprehensive study of parallel simulation architectures, execution flows, and characteristics. Then, we identify critical challenges for optimizing large simulations for parallel instances. Based on our cost-benefit analysis, we propose a novel approach to overcome the performance constraints of agent-based parallel simulations. We also propose a solution for eliminating the synchronizing cost among local instances. Our method ensures balanced performance through optimal deployment of agents to local instances and an adaptive agent placement scheme according to the simulation load. Additionally, our empirical evaluation reveals that the proposed model achieves better performance than conventional methods under several conditions.

• Proceedings of the Korea Society for Simulation Conference
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• 2005.05a
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• pp.74-81
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• 2005

In this study, we introduce a 3D simulation model to support the design on ACT(Automated Container Terminal) using 3D animation. The developed simulation model simulate virtual operations of ACT and animate the simulated results with real time. We provide several validation points for the design of ACT. And the developed system applied an object-oriented design and C++ programming to increase the reusability and extensibility. We can perform the various simulation experiment and analyze performances to estimate the required number of equipment using developed simulation model.

• Journal of Industrial Technology
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• v.31 no.B
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• pp.59-65
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• 2011

In this study, LCD Cell process has been analyzed through ARENA simulation. The major concern is to find the condition maximizing production rate (or quantity per hour). For the analysis, we have selected 4 factors and performed simulation experiments through $L_8(2^7)$ orthogonal arrays. Our results indicate that the production may be maximized with well selected conditions proposed in this study. The results obtained from this study may provide a good base for practical applications.

• Journal of the Korea Society for Simulation
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• v.12 no.3
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• pp.21-29
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• 2003

The operation rules to remarshaling works in yard is very important in automated container terminal (ACT). However, the decision rules for conventional container terminals have some restrictions to be applied to ACT whose block layout Is vortical for berth. The objective of this study is to propose the efficient operations rules for remarshaling works of automated transfer crane (ATC) in ACTs. Then, the various operation rules are simulated to verify the proposed operation rules. The results of the simulation study on various rules are provided and discussed.

• Journal of the Korea Society for Simulation
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• v.10 no.1
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• pp.51-62
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• 2001

For the productivity improvement, it is necessary to analyze problem of the system and evaluate alternative plans. But, it if hard to experiment and evaluate alternative plans in real existing system. Therefore, it is necessary to synthetically analyze and evaluate alternative plans using simulation and statistical analysis method. In this case study, as a simulation language, Promodel is used to compare and evaluate four alternatives which are considered to improve the productivity of an object system. The object system is constituted of a pretreatment line and a painting line. The purpose of this study is to analyze whether the decrease of the down time in pretreatment line can be effective to the productivity improve comparing with exiting system and other alternatives. The other purpose is to choose an alternative that has the best productivity improvement. The results of the simulation show that the possibility of improvement in productivity by decreasing the down time of pretreatment line. Two-Stage Bonferroni Procedure is used to choose the best alternative.

• Korean Journal of Air-Conditioning and Refrigeration Engineering
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• v.20 no.2
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• pp.137-143
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• 2008

In the present study, a forest fire spread was simulated with a three-dimensional, fully-transient, physics-based, computer simulation program. Physics-based fire simulation is based on the governing equations of fluid dynamics, combustion and heat transfer. The focus of the present study is to perform parametric study to simulate fire spread through flat and inclined wildland with vegetative fuels like trees or grass. The fire simulation was performed in the range of the wind speeds and degrees of inclination. From the results, the effect of the various parameters of the forest fire on the fire spread behavior was analyzed for the future use of the simulation in the prediction of fire behavior in the complex terrain.