• Proceedings of the KAIS Fall Conference
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• 2004.06a
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• pp.165-167
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• 2004

본 논문에서는 반도체 공정 시뮬레이션을 위해 산화, 확산 및 이온 주입 공정을 모델링하고, 효율적인 실행과 상호 연관된 연속 공정의 시뮬레이션이 가능하도록 통합화된 환경을 구축하였다. 점성적 스트레스 모델을 이용한 산화 공정은 유속-압력 알고리즘과 경계요소법을 이용하여 안정된 해를 얻었으며, 선확산과 산화중배 현상이 포함된 확산 공정은 전진해법과 유한요소법을 이용하였다. 또한 이온주입 공정은 TRIM을 기본으로 다양한 공정 조건에 대한 모델이 추가된 몬테카를로 방법을 사용하였다. 편리한 사용자 입력 인터페이스와 그래픽적 출력을 제공하고, 윈도즈의 API함수를 이용하여 PC상에서도 적은 메모리로도 빠른 결과를 얻을 수 있도록 하였으며, 객체 지향적인 모듈화로 타 시뮬레이터와의 호환성이 가능하도록 구성하였다.

• The Journal of the Korea institute of electronic communication sciences
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• v.3 no.4
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• pp.247-253
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• 2008

The TMO may contain two types of methods, time-triggered methods(also called the spontaneous methods of SpMs) which are clearly separated from the conventional service methods (SvMs). The SpM executions are triggered upon design time whereas the SvM executions are triggered by service request message from clients. In this paper, we describes the application environment as the patient monitor telemedicine system with TMO structure. Vital sign information web viewer systems is also the standard protocol for medical image and transfer. In order to embrace new technologies as telemedicine service, it is important to develope the standard protocol between different systems in the hospital, as well as the communication with external hospital systems.

• The KIPS Transactions:PartC
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• v.11C no.4
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• pp.509-518
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• 2004

Many simulators have been developed and are being used for the complex and various mobile communication service environments. Each of these simulators has its own teletraffic model that consists of traffic source model and network traffic model. In this paper, network traffic model and traffic source model, which are based on the data gathered in real environment, are defined in order to get more accurate simulation results in the mobile communication simulation for the urban region. The network traffic model suggested in this paper reflects the hourly call generation rate and call duration time by analyzing the data collected from actually installed base station by the time and place, and the traffic source model includes the delivery share ratio and average speed information in the region where the base station is installed. This paper defined and designed Mobile Host object that reflects the suggested traffic source model, and Call Generator object that reflects the network traffic model, and other objects support both objects. Using the teletraffic model suggested in the paper, user mobility similar to real service environment and traffic characteristics can be reflected on the simulation, and also more accurate simulation results can be got through that. In addition, by using object-oriented techniques, new service feature or environment can be easily added or changed so that the developed mobile communication simulator can reflect the real service environment all the time.

• Journal of Korea Game Society
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• v.2 no.1
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• pp.42-48
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• 2002

Many web-based simulation environments have been proposed to create models and execute simulation through the Web. Although web-based simulation has the advantage of utilizing many computers connected to Internet, overhead of the web server and heavy traffic caused by Java RMI degrade the performance and scalability of simulation. In this paper, we design and implement web-based distributed simulator using Java for the scalability and performance. In addition, we can apply the proposed simulator to create model server and client engines in online game. We apply the proposed simulator to simulate ATM switch queueing model.

• Journal of Korean Society of Industrial and Systems Engineering
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• v.24 no.66
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• pp.1-10
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• 2001

Simulation-Based Expert System(SIMBES) is a very effective tool to solve complex antral hard problems. The SIMBES model includes a simulator, a feature extractor, a machine learning system, a performance evaluator, and a Knowledge-Based Expert System(KBES). Since SIMBES depends on Problem domains, a schedule-based material requirements planning problem, which is NP-hard, was selected to exemplify the SIMBES model. To implement the SIMBES application in Smalltalk paradigm, a system class hierarchy was constructed. The hierarchy consists of five large classes such as Job Generator, Job Scheduler, Job Evaluator, Inference Engine, and Executive System. Several classes inside these classes were identified. Additionally, instance protocols about all classes have been described in terms of messages and pseudo methods. These protocols can be implemented easily by any other object-oriented languages. Furthermore, these results may be used as a skeletal system to develop a new SIMBES efficiently, especially when the application is related to other scheduling problems.

• Proceedings of the ESK Conference
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• 1995.04a
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• pp.43-43
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• 1995

차세대 원자력발전소 주제어실에서의 인간-기계 상호작용(Man-Machine Inter- action)에 대한 연구 및 인간공학 실험평가에 전문가시스템 기술의 응용에 관해 고찰 한다. 차세대 원전 주제어실에서의 인간-기계 상호작용에 대한 연구 및 실험평가는 차세대 주제어실이 CRT/VDU, 대형정보화면, 컴퓨터 시스템, 그리고 운전지원 소프트 웨어를 이용함으로서 운전원이 제어에서 의사결정 직무의 증가 특징을 가지게 되며, 이러한 환경에서 인간-기계 상호작용에 대한 연구 및 평가를 위한 전문가시스템의 주 요 응용은 rapid prototyping, 사용자 인터페이스 및 인간-기계 인터렉션의 지식기반 평가, 운전원 사고모형 개발, 실험데이타 해석 시스템 개발, 그리고 인터뷰 시스템 개 발 등을 들 수 있다. 차세대 주제어실에서의 인간-기계 상호작용 연구 및 인간공학 실험평가에 실시간 전문가시스템 쉘 G2의 실시간 시뮬레이션 기능, 객체지향 프로그 래밍 기능, rapid prototyping 기능, 그리고 추론기능을 중심으로 응용에 관해서 고찰 하였다.

• Proceedings of the Korean Society of Precision Engineering Conference
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• 1995.10a
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• pp.751-755
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• 1995

It become more difficult to anticipate the performance of fluid power systems as the number of components increases because of nonlinearrities inherent in hydraulic components. In this situation, the computer simulation technique can be an effective tool in the analysis and design of fluid power systems. In this paper, simulation results are presented for dynamic characteriatics of a knuckle crane. Simple models for hydraulic components and relatively detailed motion equations for attachments are used. the simulation reaults are very close to those of experiments. The simulation is performed using a simulation package developed with object-oriented method. This package provides the encironment that user can construct desirct desired circuits form the component library, checks the continuity and compatibility conditions automatically and executes simulation

• The Journal of the Korea Contents Association
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• v.15 no.8
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• pp.1-8
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• 2015

Arduino is an open-source prototyping platform. It has been used in diverse areas including media-art, simulation and interaction devices. The Arduino application does not provide an effective form of software design specification, since it is basically developed in C Programming language. In this paper, we propose a design method for the Arduino applications using the extension mechanism of the UML(Unified Modeling Language). The proposed method is enable to specify the main function of Arduino applications like digital I/O and analog I/O in UML notations.

• Journal of the military operations research society of Korea
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• v.22 no.1
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• pp.67-80
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• 1996

Artificial Intelligence(AI) techniques and Object-Oriented(OO) techniques contribute to the simulation modeling of the complex systems. AI techniques are suitable to model human reasoning in the simulation. While OO techniques have advantages of re-usability, maintainability and extendability of the software. Thus, in this paper, we design a knowledge-based object-oriented simulation model, particularly for the logistics analysis of military armor vehicles. The simulation model consists of three modules i.e., scenario, simulation mechanism, and inference engine. The model is designed within the OO paradigm and implemented by using the C++ language. An example case of using the model for the logistic analysis is included.

• Journal of Institute of Control, Robotics and Systems
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• v.12 no.8
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• pp.834-841
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• 2006

Recently, many enterprises are installing AMSs(Automated Manufacturing Systems) for their competitive advantages. As the level of automation increases, proper design and validation of control logic is a imperative task for the successful operation of AMSs. However, current discrete event simulation methods mainly focus on the performance evaluation. As a result, they lack the modeling capabilities for the detail logic of automated manufacturing system controller. Proposed in this paper is a method of validation of the controller logic for automated material handling system using an object-oriented design and simulation. Using this method, FA engineers can validate the controller logic easily in earlier stage of system design, so they can reduce the time for correcting the logic errors and enhance the productivity of control program development Generated simulation model can also be used as a communication tool among FA engineers who have different experiences and disciplines.