• Journal of the Korea Convergence Society
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• v.12 no.10
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• pp.333-342
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• 2021

The purpose of this study is to compare the differences in transfer motivation and learning self-efficacy before and after applying virtual simulation for nursing in psychiatric nursing practice, and to provide them as basic data for effective psychiatric practical education. This study was conducted from October to December 2020. The subjects were 41 people who were enrolled in the third year of a located in U city, and who had received psychiatric nursing practice education using virtual simulation for nursing. Data were analyzed by paired t-test and pearson's correlation coefficient. After practice compared to before psychiatric nursing practice with virtual simulation nursing applied, transfer motivation was significantly increased and learner self-efficacy increased, but it was not statistically significant. Therefore, It was confirmed that psychiatric nursing practice education using virtual simulation for nursing is partly an effective practice strategy.

• Journal of Digital Convergence
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• v.20 no.4
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• pp.705-713
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• 2022

The purpose of this study is to identify the effect of virtual reality simulation education and intend to present basic data that enables virtual reality simulation education to be used as practical education. Data were collected from April 26 to June 4, 2021 and analyzed by paired t-test, Wilcoxon Signed-Rank Test, Spearman's correlation coefficient using IBM SPSS Statistics 25 program. The results of this study showed that critical thinking disposition, clinical competency, practice satisfaction was improved after virtual reality simulation education. And there were a positive correlation with each other. Virtual reality simulation education is considered a very effective teaching method for nursing students. It is necessary to develop and apply more diverse and systematic scenarios and practice programs in future research.

• Journal of Information Processing Systems
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• v.9 no.3
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• pp.489-498
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• 2013

In this paper, we propose a common simulation model that can be reused for different performance evaluations of networked virtual environments. To this end, we analyzed the common features of NVEs, in which multiple regions compose a shared space, and where a user has his/her own interest area. Communication architecture can be client-server or peer-server models. In usual simulations, users move around the world while the number of users varies with the system. Our model provides various simulation parameters to customize the region configuration and user movement pattern. Furthermore, our model introduces a way to mimic a lot of users in a minimal experiment environment. The proposed model is integrated with our network framework, which supports various scalability approaches. We specifically applied our model to the interest management and load distribution schemes to evaluate communication overhead. With the proposed simulation model, a new simulation can be easily designed in a large-scale environment.

• The Journal of Korea Robotics Society
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• v.2 no.3
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• pp.242-248
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• 2007

Robot system development consists of several sub-tasks such as layout design, motion planing, and sensor programming etc. In general, on-line programming and debugging for such tasks demands burdensome time and labor costs, which motivates an off-line graphic simulation system. MSRS(Microsoft Robotics Studio) released in recent years is an appropriate tool for the graphic simulation system since it supports CCR(Concurrency and Coordination Runtime), DSS(Decentralized System Services), and dynamics simulation based on PhysX and graphic animation as well. In this paper, we developed an MSRS based network simulation system for quadruped walking robots, which controls virtual 3D graphic robots existing in remote side through internet.

• Proceedings of the Korea Society for Simulation Conference
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• 2005.05a
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• pp.123-128
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• 2005

War-game modeling and simulation system have been developed and applied to virtual tactical training both inside and outside of country However, most existing models have been developed for individual purpose based on the simple platform modeling such as physical modeling, visual modeling, and conceptual modeling. Thus, those modeling and simulation system cannot support the interoperability, expensively, variety and reusability. To deal with these problems, the paper propose an integrated design methodology for the War-game systems based on the DEVS/HLA.

• Korean Journal of Computational Design and Engineering
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• v.21 no.2
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• pp.204-214
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• 2016

Shipbuilding process takes a long time for producing final products, and needs many different resources. Because of these characteristics, it has been studied about shipyard simulation and virtual manufacturing that is able to implement the virtual manufacturing process. However, among the previous researches, it requires considerable time and effort to construct simulation model since the systematic methodology has not been used for simulation modeling. Also, reusability of constructed simulation model was low. Therefore, this research defines the method to construct shipyard simulation system using the process-centric simulation modeling methodology and shipyard simulation framework. This paper also validates the utility of this methodology through applying to construct simulation model for the shipyard master plan validation.

• Journal of the Korea Computer Graphics Society
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• v.21 no.5
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• pp.21-27
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• 2015

In this paper, we presents visual effect(water, fire, smoke) simulation and interaction system for TV virtual studio. TV virtual studio seamlessly synthesizes CG background and a live performer standing on a TV green studio. Previous virtual studios focus on the registration of CG background and a performer in real world. In contrast to the previous systems, we can afford to make new types of TV scenes more easily by simulating interactive visual effects according to a performer. This requires the extraction of the performer motion to be transformed 3D vector field and simulate fluids by applying the vector field to Navier Stokes equation. To add realism to water VFX simulation and interaction, we also simulate the dynamic behavior of splashing fluids on the water surface. To provide real-time recording of TV programs, real-time VFX simulation and interaction is presented through a GPU programming. Experimental results show this system can be used practically for realizing water, fire, smoke VFX simulation and the dynamic behavior simulation of fish flocks inside ocean.

• Journal of KIISE
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• v.42 no.2
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• pp.213-219
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• 2015

Simulation is used these days to verify the hypothesis or the new technology. In particular, National Defense Modeling & Simulation (M&S) is used to predict wartime situation and conduct the military training. National Defense M&S can be divided into three parts, live simulation, virtual simulation, and constructive simulation. Live simulation is based on the real environment, which allows more realistic sumulation; however, it has decreased budget efficiency, but reduced depictions of reality. In contrast, virtual and constructive simulations which are based on the virtual environment, have increased budget efficiency, but reduced depictions of reality. Thus, if the three parts of the M&S are combined to make the L-V-C combined environment, the disadvantages of each simulation can be complemented to increases the quality of the simulation. In this paper, a method of interworking heterogeneous simulation middeware for L-V-C combined environment is proposed, and the test results of interworking between Data Distribution Service (DDS) and High Level Architecture (HLA) are shown.

• The Korean Journal of Emergency Medical Services
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• v.22 no.2
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• pp.93-102
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• 2018

Purpose: The study aims to establish an effective training strategy and methods by comparing the effects of educational interest, satisfaction, and achievements of virtual reality and videos education before simulation training. Methods: The randomized control study was implemented on May 31, 2018, by randomly selecting 36 participants to compare educational virtual reality and videos. Statistical analyses were performed using SPSS 20.0. Results: The participants were divided into an intervention group of 17(47.2%) and a control group of 19(52.8%). Regarding the levels of satisfaction, a significant difference (p= .010) was noted between the control (3.88 points) and the intervention groups (4.45 points). A significant difference (p= .001) was also noted between the intervention (80.3 points) and control (63.3 points) in terms of total simulation practical skills. Conclusion: Educational virtual reality can be an alternative training method to achieve the standard educational objectives by raising levels of educational interest and of achievement with practical skills.

• The Transactions of the Korean Institute of Electrical Engineers D
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• v.54 no.3
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• pp.206-214
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• 2005

In these days the virtual reality technology has been applied to treat such an anxiety disorders. And also a medical doctor can diagnose the patient in distance with the telemedicine system. In this thesis, an telemedicine assistant system for treatment of acrophobia using biomedical signals and virtual reality technique is proposed. I made two virtual reality simulations for treatment of acrophobia and telemedicine system for communication between doctor and patient using personal computer. Multimedia conference service, online questionary, signal transfer system are needed to configure such system. Virtual reality simulation system that composed of position sensor, head mount display, and audio system, is also included in this telemedicine system. I added virtual environment update system to this virtual reality telemedicine system for treatment of acrophobia. With this virtual environment update system, the doctors can change virtual reality simulation stage based on the status of each patient and symptom of phobia. We will apply this system to the acrophobia patient in distance and be able to offer better medical treatment for mental illness in near future.