• Title/Summary/Keyword: simulation application

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Scenario Usefulness and Avatar Realism in an Augmented Reality-based Classroom Simulation for Preservice Teacher Training

  • Kukhyeon KIM;Sanghoon PARK;Jeeheon RYU;Taehyeong LIM
    • Educational Technology International
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    • v.24 no.1
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    • pp.1-27
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    • 2023
  • This study aimed to examine an augmented reality-based teaching simulation in a mobile application. We examined how AR-enabled interactions affect users' perceived scenario usefulness and avatar realism. The participants were forty-six undergraduate students. We randomly grouped them into two conditions: AR and Non-interactive video groups with equal sample sizes. This study employed an experimental design approach with a one-way multivariate analysis of variance with repeated measures. The independent variable is the presence/absence of AR interaction with a mobile application. The dependent variables were avatar realism and scenario usefulness. The measures explored how the student avatar's emotional intensity in a scenario influences user perception. The results showed that participants in the AR-interaction group perceived avatar realism significantly higher than those in the non-interactive video group. Also, participants perceived the high emotional intensity scenario (aggression toward peers) to be significantly higher usefulness than the low emotional intensity scenario (classroom disruption).

Application of Control Variable with Routing Probability to Queueing Network Simulation (대기행렬 네트워크 시뮬레이션에서 분지확률 통제변수의 응용)

  • Kwon, Chi-Myung;Lim, Sang-Gyu
    • Journal of the Korea Society for Simulation
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    • v.21 no.3
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    • pp.71-78
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    • 2012
  • This research discusses the application of the control variables to achieve a more precise estimation for the target response in queueing network simulation. The efficiency of control variable method in estimating the response depends upon how we choose a set of control variables strongly correlated with the response and how we construct a function of selected control variables. For a class of queuing network simulations, the random variables that drive the simulation are basically the service-time and routing probability random variables. Most of applications of control variable method focus on utilization of the service time random variables for constructing a controlled estimator. This research attempts to suggest a controlled estimator which uses these two kinds of random variables and explore the efficiency of these estimators in estimating the reponses for computer network system. Simulation experiments on this model show the promising results for application of routing probability control variables. We consider the applications of the routing probability control variables to various simulation models and combined control variables using information of service time and routing probability together in constructing a control variable as future researches.

Development and Evaluation of a Web-based Simulation Program on Patient Rights Education using Integrated Decision Making Model for Nurse Students (가치통합 의사결정모델을 이용한 간호학생 대상 웹기반 환자권리교육 시뮬레이션 프로그램 개발 및 평가)

  • Kim, Ki-Kyong
    • Journal of Korean Academy of Nursing Administration
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    • v.20 no.2
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    • pp.227-236
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    • 2014
  • Purpose: This study was designed to develop and evaluate the a web-based simulation program on patient rights education using integrated decision making model into values clarification for nurse students. Methods: The program was designed based on the Aless & Trollip model and Ford, Trygstad-Durland & Nelms's decision model. Focus groups interviews, surveys on learning needs for patient rights, and specialist interviews were used to develop for simulation scenarios and decision making modules. The simulation program was evaluated between May, 2011 and April, 2012 by 30 student nurses using an application of the web-based program evaluation tools by Chung. Results: Simulation content was composed of two scenarios on patient rights: the rights of patients with HIV and the rights of psychiatric patients. It was composed of two decision making modules which were established for value clarifications, behavioral objective formations, problems identifications, option generations, alternatives analysis, and decision evaluations. The simulation program was composed of screens for teacher and learner. The program was positively evaluated with a mean score of $3.14{\pm}0.33$. Conclusion: These study results make an important contribution to the application of educational simulation programs for nurse students' behavior and their decision making ability in protecting the patient rights.

REGENERATIVE BOOTSTRAP FOR SIMULATION OUTPUT ANALYSIS

  • Kim, Yun-Bae
    • Proceedings of the Korea Society for Simulation Conference
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    • 2001.05a
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    • pp.169-169
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    • 2001
  • With the aid of fast computing power, resampling techniques are being introduced for simulation output analysis (SOA). Autocorrelation among the output from discrete-event simulation prohibit the direct application of resampling schemes (Threshold bootstrap, Binary bootstrap, Stationary bootstrap, etc) extend its usage to time-series data such as simulation output. We present a new method for inference from a regenerative process, regenerative bootstrap, that equals or exceeds the performance of classical regenerative method and approximation regeneration techniques. Regenerative bootstrap saves computation time and overcomes the problem of scarce regeneration cycles. Computational results are provided using M/M/1 model.

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Construction of a Knowledge Based Hybrid Simulation Environment

  • Kim, Myoung-Hee
    • Journal of the Korea Society for Simulation
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    • v.1 no.1
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    • pp.25-30
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    • 1992
  • A knowledge based hybrid simulation environment has been established which supports the simulation procedure from the modeling step to the experimentation step by providing various tools, query, and advisory. The knowledge base in the established environment uses the If-Then Rule to transfer the fact input from the user to the act for the execution of the simulation process. Simulation non-experts are the user target and non-specific area is the application target.

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Development of Guidelines for Animal Waste Land Application to Minimize Water Quality Impacts (축산분뇨 농지환원을 위한 적정관리방안)

  • 홍성구
    • Magazine of the Korean Society of Agricultural Engineers
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    • v.44 no.5
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    • pp.136-146
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    • 2002
  • Land application of manure compost is considered one of the widely-used animal waste management practices. Many livestock farms adopt composting for their animal waste disposal and apply the compost to crop fields. While standard rates have been established based on researches with respect to land application of manure compost recently, there have been few discussions on water quality impact of the application. Water quality impact should be taken into account in land applications of manure compost. In this study, management practices were proposed based on the investigation of water quality of leachate from manure compost under rainfall simulation, field studies, and monitoring runoff water quality from farm fields after land application of animal waste. The concentrations of major water quality parameters of the leachate were significantly high, whereas those of runoff from soils after tillage for soil incorporation, were not affected by the application based on a series of experiments. Runoff water from farm fields after land application also showed high concentrations of pollutants. Appropriate management practices should be employed to minimize pollutant loading from manure applied fields. Proposed major management practices include 1) application of recommended amounts, 2) proper tillage for complete soil and manure incorporation, 3) field management to prevent excessive soil erosion, 4) complete diversion of inflow into the field from outside, 5) implementation of vegetative buffer strips near boundaries, and 6) prevention of direct discharge of runoff water front fields Into streams.

Differential die-away technology applied to detect special nuclear materials

  • Lianjun Zhang;Mengjiao Tang;Chen Zhang;Yulai Zheng;Yong Li;Chao Liu;Qiang Wang;Guobao Wang
    • Nuclear Engineering and Technology
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    • v.55 no.7
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    • pp.2483-2488
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    • 2023
  • Differential die-away analysis (DDAA) technology is a special nuclear material (SNM) active detection analysis technology. Be a nuclear material shielded or not, the technology can reveal the existence of nuclear materials by inducing fission from an external pulsed neutron source. In this paper, a detection model based on DDAA analysis technology was established by geant4 Monte Carlo simulation software, and the optimal sensitivity of the detection system is achieved by optimizing different configurations. After the geant4 simulation and optimization, a prototype was established, and experimental research was carried out. The result shows that the prototype can detect 200 g of 235U in a steel cylinder shield that's of 1.5 cm in inner diameter, 10 cm in thickness and 280 kg in weight.

A Development of Application Model on Virtual Simulation for Prevention of Cyberbullying (사이버불링 예방을 위한 가상체험형 시뮬레이션 적용 모형 개발)

  • Gu, Jungmo;Lee, Eunhwa
    • The Journal of Korean Association of Computer Education
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    • v.19 no.1
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    • pp.63-76
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    • 2016
  • The damage of cyber bullying is increasing. A response of code is needed with that of law and education. This study would use the strengths of a virtual simulation as one of the technical solutions. Students learn cyber bullying and prevention of it through each step. The steps in this application model consist of recognition${\rightarrow}$judgement${\rightarrow}$decision${\rightarrow}$behavior. Each detailed step of this model is made of pre-briefing${\rightarrow}$demanding of response${\rightarrow}$participating in response${\rightarrow}$result and feedback${\rightarrow}$growth${\rightarrow}$debriefing. Thus we developed the application model of this virtual simulation and implemented it for education and prevention of cyber bullying. We hope that the model and simulation developed by this study would reduce the damage resulting from cyber bullying.

Effect by the application of the Verlet Neighboring list in a Molecular Dynamics Simulation (분자동역학법에 있어 인접분자 리스트의 영향)

  • Choi Hyun-Kue;Kim Hae-min;Choe Soon-Youl;Kim Kyung-Kun;Choi Soon-Ho
    • Journal of Advanced Marine Engineering and Technology
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    • v.29 no.1
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    • pp.60-67
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    • 2005
  • Generally. in the molecular dynamics simulations. the Verlet neighboring list algorithm is used for the reduction of a simulation time On the other hand. the application of the Verlet neighboring list forces the time evolution of a simulation system to follow an unrealistic path in a phase space. In equilibrium state, it does not matter with the simulation results because the individual molecule's motion is originally random and any effect due to a small deviation from a real time evolution can be completely ignored. However, if an unsteady state is involved. such a deviation may significantly affect to the results. That is, there is a Possibility that the simulation results Provide ones with any misleading data In this study we evaluated the effect due to the Verlet neighboring list in performing the simulation of a non-equilibrium state and suggested the method to avoid it.

A Study on the Operational Plan for Port Container Terminal Using High Level Architecture (상위체계구조를 이용한 컨테이너 터미널 운영방안 연구)

  • Lee, Sang-Heon;Lee, Chan-Woo
    • IE interfaces
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    • v.17 no.1
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    • pp.128-141
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    • 2004
  • Although a number of container terminal simulators have been developed for various purposes, none of the existing simulators allow the system structure to reuse the system structure depending on application. Our goal is to develop highly reusable, highly inter-operable and flexible container terminal simulation system. The High Level Architecture(HLA) is an architecture for reuse and inter-operation of simulation. It is based on premise that no simulation can satisfy all use and users. An individual simulation or set of simulations developed for one purpose can be applied to another application under the HLA concept of the federation : a composable set of interacting simulations. The intent of the HLA is a structure which will support reuse of capabilities available in different simulations, ultimately reducing the cost and time required to create a synthetic environment for a new purpose, and the possibility of distributed collaborative development of complex simulation applications. In this paper, we discuss the design of a HLA-based port container terminal simulation system. Furthermore, we describe various technical motivations for HLA, the key elements of the architecture and how they are minimum and essential to the goal of reuse and interoperability.