• 한국경영과학회지
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• 제26권1호
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• pp.15-32
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• 2001

It is well known that the web design is composed of several factors which are interacting with each other. However, the current approach to web design had been focused on modifying specific factors without considering its impact on other factors. In this sense, we propose more holistic approach to the web design by using fuzzy cognitive map. For this purpose, we form an illustrative fuzzy cognitive map for the web design which is based on the literature, and analyzed and impact of change in a specific factor on other factors. Especially, to improve the output analyzability, we suggested an advanced version of fuzzy cognitive map called stratified fuzzy cognitive map. After simulating the fuzzy cognitive map for web design, we could conclude that our approach is robust and effective compared to the traditional web design approach.

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 1999년도 추계학술대회 논문집
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• pp.325-330
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• 1999

Web-based simulation is one of the most interesting field of simulation research today. Among many research area of web-based simulation, we concern about what a effective way of building simulation model is since creating comprehensive simulation models can be expensive and time consuming. So this paper discusses how to integrate distributed simulation sub-models as objects for constructing the required simulation model which is more large and complex. We introduce two web-oriented methodologies (such as JIDL, CORBA) and the concepts of agent for assisting modelers to integrate simulation models scattered over the web. SINDBAD, which we designed, is a simulation environment which makes it possible constructing a simulation model with distributed model objects on the web and performing the parallel simulation in a distributed way. It is organized according to design patterns in the object oriented concept. Actually we are on the premise that all the distributed objects are originally composed in a CORBA-compatible way to start with our prototype of SINDBAD.

• 한국콘텐츠학회논문지
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• 제5권5호
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• pp.325-333
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• 2005

웹 기반 교수-학습체계를 설계 시에 학습자의 효율적인 상호작용을 통해서 학습효과를 높이기 위해서는 많은 것들이 고려되어야 한다. 무엇보다도 웹 환경에서 학습자에게 효율성과 관심을 유도하기 위해서 웹 기반 시뮬레이션이 권장된다. 이러닝에서 잘 설계된 시뮬레이션 기반 콘텐츠는 학습자에게 지속적인 관심을 제공하기 때문에 효율적인 학습 설계가 필요하다. 현재까지 많은 이러닝 시스템에서는 각기 다른 기법으로 웹 기반 시뮬레이션을 제공하고 있으나 학습자의 학습 스타일과 성취 수준을 고려한 콘텐츠의 재구성이 요구되고 있다. 본 논문에서는 XML 웹 서비스를 통해서 이러닝 시스템간에 시뮬레이션 객체를 공유하는 시스템을 제안하였다. 실험결과 제안 시스템이 기존 시스템보다 자기주도적 학습 활동과 상호 작용에서 효율적임을 보여준다.

• 한국정밀공학회지
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• 제18권5호
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• pp.84-89
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• 2001

The alignment of the rollers carrying the web is found to be one of important factors to the lateral behavior of the moving web and to the quality of the final web products. But, the perfect alignment of the rollers is not always possible and the web itself can be cambered. Thus the control of lateral behavior of the moving web is critical in the most of web handling systems. The web guiding system that adjusts the angle of the alignment between two adjacent rollers is commonly used in industry. But, in this paper a new web guiding system is proposed by using the lateral dynamics of the moving web induced by a tilted roller in normal direction of a web. The computer simulation study was carried out to verify the steering performance of the suggested guiding system. Computer simulation study shows that the performance of the new guiding mechanism is better than that of an existing guiding mechanism.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제11권2호
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• pp.1089-1104
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• 2017

We have developed an information management tool for the EDISON (EDucation-research Integration through Simulation On the Net) open platform. EDISON is, at present, a web-based simulation service for education and research in five computational areas, namely, nanophysics, fluid dynamics, chemistry, structural dynamics, and computer aided optimal design. The EDISON open platform consists of three tiers: EDISON application framework, EDISON middleware, and EDISON infra-resources. The platform provides web portals for education and research in areas such as computational fluid dynamics, computational chemistry, computational nanophysics, computational structural dynamics, and computer aided optimal design along with user service. The main purpose of this research is to test the behavior of the release version of the EDISON Open-Platform under normal operating conditions. This management tool has been implemented using the RESTful API designed in EDISON middleware. The intention is to check co-operation between the middleware and the infrastructure. Suggested tools include User management, Simulation and Job management, and Simulation software (i.e., solver) testing. Finally, it is considered meaningful to develop a management tool that is not supported in other web-based online simulation services.

• 한국시뮬레이션학회논문지
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• 제9권4호
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• pp.25-40
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• 2000

The cost of simulation modeling, the expertise required, and the pains of starting a new each time are impediments to more wide spread adoption of simulation technology. In addition, one of the most critical problems in the field of computer simulation today is the lack of published models and physical objects within the World Wide Web (WWW) allowing such distribution. From the viewpoint of WWW as distributed model repositories, it can be assumed that very many simulation models exist on the web. This paper is based on the premise that WWW is a distributed repository. Design Pattern, web-oriented technology like Java and CORBA, which are especially to cope with distributed objects, are introduced and discussed in detail for integration of simulation model. In this paper an architecture of model integration is proposed, which presents the whole procedure of model integration and how the Internet technologies are connected in. The central focus of this research is on the technical realization of integrating simulation models as distributed objects

• 대한전자공학회:학술대회논문집
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• 대한전자공학회 2002년도 ITC-CSCC -3
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• pp.1646-1649
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• 2002

This paper introduces a simulation design decision support system to support the development process of the pipeline network and provide decision support to the operations of the gas pipelines. The system has been implemented on Flash5, which has a multimedia capabilities environment for designing and delivering low- bandwidth animations, presentations, and web sites. It also offers scripting capabilities and server-side connectivity fur creating applications and web interfaces. Hence a user can interact with the system on the World Wide Web.

• 한국게임학회 논문지
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• 제2권1호
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• pp.42-48
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• 2002

웹을 통하여 모델을 생성하고, 시뮬레이션을 수행하는 새로운 자바를 이용한 웹 기반 시뮬레이션 환경들이 제시되고 있다. 웹 기반 시뮬레이션은 인터넷에 연결된 많은 컴퓨터를 협동적으로 이용할 수 있다는 장점이 있지만, 웹 서버와 자바의 원격호출(RMI: Remote Method Invocation)이 이용되는 환경에서는 매우 많은 시뮬레이션 개체들간의 상호 동작과 정보 공유가 서버의 과다한 처리량과 통신 부하를 초래하여 시뮬레이션의 성능과 확장성을 저하시킬 수 있다. 본 논문에서는 확장성과 성능을 고려한 웹 기반 시뮬레이터를 설계하고, 객체 지향 언어인 자바를 사용하여 구현하였다. 또한, 제안된 시뮬레이터가 온라인게임에서 클라이언트와 서버 엔진의 모델을 생성하기 위해 활용될 수 있다. ATM 스위칭 모델의 시뮬레이션을 통해 구현된 시뮬레이션 환경의 활용을 제시한다.

• 한국시뮬레이션학회:학술대회논문집
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• 한국시뮬레이션학회 2001년도 The Seoul International Simulation Conference
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• pp.349-353
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• 2001

There are many excellent characters of Java-based simulation compared with existing ones in the respect of running on the Internet/Web, reuse, integration and etc.. In this paper, the main idea of design and realization of Java-based modeling and simulation software for DEVS will be discussed in detail.

• 한국시뮬레이션학회논문지
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• 제8권1호
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• pp.113-138
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• 1999

Driven by the explosive expansion and acceptance of the Internet and its multimedia front-end, the Web, a new generation of the modeling and simulation tools have come up with the name of Web-Based Simulation (WBS). Most of WBS libraries inherit its powerful advantages from Java. However, there are cases where explicit specification of models or interface objects is more desirable than the black-box programs. This paper presents an XML-based DEVS (Discrete Event System Specification) markup language for sharing simulation models on the Web. DEVS provides a system-theoretic formalism for the language while XML supports platform-independent data access. This paper focuses on the design of such a language.