• 한국시뮬레이션학회논문지
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• 제7권2호
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• pp.1-16
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• 1998

This paper presents an automated methodology for campus network design and performance analysis using the rule-based SES and DEVS modeling & simulation techniques. Proposed methodology for structural design and performance analysis can be utilized not only in the early stage of network design for selecting configurable candidate from all possible design alternatives, but also in simulation verification for generating performance data. Our approach supercedes conventional methodologies in that, first, it can support the configuration automation by utilizing the knowledge of design expert ; second, it can provide the simulation-based performance evaluation ; third, it is established on the basis of the well-formalized framework so that it can support a hierarchical and modular system design. Several simulation tests performed on a campus network example will illustrate our technique.

• EDISON SW 활용 경진대회 논문집
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• 제5회(2016년)
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• pp.467-468
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• 2016

The importance of the recent manufacturing industry have been made to invest in a lot of assistance and human resource development at the national dimension in which to rise again. However Learned in actual school education kinetic, and the use to how product design structural knowledge, Often it feels vague unlikely whether it is possible to derive an optimal product. In this study, by using the simulation-based Jansen Mechanism designed a walking robot, after optimization of the numerical consideration when designing for optimum walking motion, through simulation through the actual production resulting numerical information is examined whether valid. In addition, through the actual production was walking robot, to verify the validity of the simulation-based design.

• 한국콘텐츠학회논문지
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• 제16권10호
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• pp.617-626
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• 2016

이 연구는 간호학과 학부 과정에서 경험한 시뮬레이션 학습이 신규간호사의 문제해결과정과 임상수행능력에 미친 영향을 파악하기 위한 서술적 조사연구이다. 연구 대상자는 학부과정에서 시뮬레이션 학습 경험이 1회 이상 있으며 임상 경력 12개월 미만의 신규간호사 202명이다. 연구를 통해 학부에서 경험한 시뮬레이션 학습의 횟수와 신규간호사의 문제해결과정 및 임상수행능력에 미친 영향 간에는 유의미한 상관관계가 없었으며, 시뮬레이션 학습의 설계와 문제해결과정 및 임상수행능력에 미친 영향 간에는 유의미한 양의 상관관계가 있는 것으로 나타났다. 연구 대상자들이 경험한 시뮬레이션 학습의 설계를 군집분석으로 유형화하여 문제해결과정 및 임상수행능력에 미친 영향의 차이를 분석한 결과에서도 유의미한 차이를 나타냈다. 이 연구를 통해 학습의 효과를 향상하기 위해서 시뮬레이션 학습의 설계가 중요하다는 점을 확인하였으며, 효과적인 운영을 위한 기초 자료로 활용할 수 있을 것으로 기대한다. 추후 학부 과정의 시뮬레이션 학습이 간호사의 임상 능력에 미치는 영향에 대하여 보다 면밀한 평가가 이루어질 필요가 있다.

• 한국소성가공학회:학술대회논문집
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• 한국소성가공학회 1994년도 춘계학술대회 논문집
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• pp.7-34
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• 1994

;Recently the sheet forming simulation technology revealed great progress in the sense of practical application in the automotive, electric/electronics and aviation/space industries. The goal of sheet forming simulation is to embedded in the design engineering system which is consisted by the analysis and synthesis modules. This design simulation system predicts the slackness of sheet and estimate the formability, and search the optimum material/forming/structure conditions. This OVER-ALL OPTIMUM DESIGN can be classified as follow; 1. ANALYZING PROCEDURE: Numerical simulation based on nonlinear theories -geometry, material and friction nonlinearities- 2. OPTIMIZATION PROCEDURE: Optimum design based on mathematical programing and AI technologies, those are implemented in CAD/CAM/CAE System - Concurrent Engineering System-. In this paper, four subjects will be discussed; (1) State of arts of computer simulation technologies in Japan. (2)History of sheet forming simulation. (3) Benchmark problems. (4) Future technology in the sheet forming simulation.ation.

• International Journal of Aeronautical and Space Sciences
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• 제18권3호
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• pp.574-578
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• 2017

In order to achieve iterative design in early R&D period, a Distributed and Real-time Integrated Simulation System for avionics based on a Model-Based Systems Engineering (MBSE) method is proposed. The proposed simulation system includes driver, simulation model, monitor, flight visual model and aircraft external model.The effect of this simulation system in iterative design and system verification is testified by several use cases. The result shows that the simulation system, which can play an important role in iterative design and system verification, can reduce project costs and shorten the entire R&D period.

• 한국시뮬레이션학회논문지
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• 제29권3호
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• pp.27-40
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• 2020

시뮬레이션 모델을 통해 가상 전장에서 국방체계의 효과도를 분석하는 것을 순방향 시뮬레이션이라고 할 때, 높은 효과도를 가지는 국방체계를 설계하기 위해서는 역방향 시뮬레이션이 요구된다. 즉 효과도 분석 모델을 바탕으로 높은 효과도를 달성하기 위한 군사 장비들의 제원 및 성능, 그리고 운용 전술을 역으로 도출해야 한다. 하지만 역모델을 도출할 수 없는 시뮬레이션 모델의 특성상 역방향 시뮬레이션은 많은 순방향 시뮬레이션 반복을 요구하므로 효율성의 문제를 초래한다. 본 논문에서는 반복 횟수를 줄임으로 역방향 시뮬레이션을 효율적으로 수행하기 위한 다양한 알고리즘을 제시하고, 실무자가 이들을 손쉽게 활용하기 위한 역방향 시뮬레이션 도구를 소개한다. 실무자는 본 도구를 바탕으로 다양한 역방향 시뮬레이션 알고리즘을 활용하여 국방체계 설계를 위한 역방향 시뮬레이션을 손쉽게, 또 효율적으로 수행할 수 있다. 전함의 방어 시스템 설계와 군사 네트워크 시스템 설계에 대한 사례 연구는 이를 입증한다.

• 한국콘텐츠학회:학술대회논문집
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• 한국콘텐츠학회 2016년도 춘계 종합학술대회 논문집
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• pp.251-252
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• 2016

The vast majority of the disaster prevention design research in Korea has focused on the macro-level interventions such as examining the existing systems and approaches, instituting revised policies, systematically establishing intervention programs, and evaluating the effectiveness of the interventions. However, little has focused on systematically challenging individuals' awareness using micro-level intervention. The present paper introduces approaches to micro-level intervention by infusing narrative-based simulation, and further suggests the implications on balancing the approaches of both micro-level and macro-level interventions.

• International Journal of Automotive Technology
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• 제6권3호
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• pp.277-283
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• 2005

Formability simulation of automotive panels at early design phases can reduce product and tooling development time and cost. However, for the simulation to be effective in leading the design process, fast and reliable results should be achieved with limited design definition and minimum modeling effort. In this paper, nonlinear finite element analysis is used to develop an automated process for the formability simulation of automotive body panels at early design phases. Due to the limited design definition at early design phases, the automated simulation process is based on the plane strain analysis for selected number of typical sections along the panel. Therefore, an entire panel can be analyzed with few sections. The state of plane strain can be easily induced, during simulation through symmetry and applied boundary conditions that simplify the modeling process. To study the reliability and effectiveness of the developed simulation process, the analytical results are compared with measured results of production automotive body side panels. The comparison demonstrates that the developed simulation process is reliable and can be effective for analyzing sheet metal formability, in early vehicle development phases.

• 한국해양공학회지
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• 제27권1호
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• pp.24-30
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• 2013

The Korea Navy has been making constant efforts to apply M&S (modeling and simulation) to naval ship development, and the generalization of M&S for ship development is a trend. M&S for ship design is used for the V&V (verification and validation) of its design and operation, including design verification and ergonomic design that considers the crew using the Naval Ship Product Model. In addition, many parts of this M&S are repeatedly accomplished regardless of the kinds of ships. This study aims to standardize M&S, which repeatedly applies similar verifications for operation scenarios. A congestion assessment simulation for the major spaces of ships was the subject of the standardization based on the leading research results of various researchers, and a simulation automation solution was suggested. An information model using XML was proposed through the simulation automation concept, and a prototype system based on it was implemented. The usability was shown through a case study that verified the operability performance of the crew messroom.

• Ocean Systems Engineering
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• 제2권2호
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• pp.83-97
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• 2012

In the present work, design procedure and computer simulation of an AUV are documented briefly. The design procedure containing the design of propulsion system and CFD simulation of hydrodynamics behavior of the hull leads to achieve an optimum mechanical performance of AUV system. After designing, a comprehensive one dimensional model including motor, propeller, and AUV hull behavior simulates the whole dynamics of AUV system. In this design, to select the optimum AUV hull, several noses and tails are examined by CFD tools and the brushless motor is selected based on the first order model of DC electrical motor. By calculating thrust and velocity in functional point, OpenProp as a tool to select the optimum propeller is applied and the characteristics of appropriate propeller are determined. Finally, a computer program is developed to simulate the interaction between different components of AUV. The simulation leads to determine the initial acceleration, final velocity, and angular velocity of electrical motor and propeller. Results show the final AUV performance point is in the maximum efficiency regions of DC electrical motor and propeller.