• 한국멀티미디어학회논문지
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• 제4권5호
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• pp.377-389
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• 2001

최근의 웹 환경 확산으로 웹을 기반으로 하는 워크플로우 시스템의 구축경향이 높다. 워크플로우 시스템에서 중요한 기능은 미리 정의된 규칙, 절차 및 조건에 따라 작업흐름을 자동화하는 것으로 정보흐름에 있어서 수동적인 작업을 배제하고 GUI 방식을 지원하며 정보처리의 이동성이 고려되어야 한다. 특히 분산된 업무조직의 작업흐름을 위한 분산워크플로우 시스템은 웹 환경에 있어서 프로세스 로직에 따른 태스크간의 이동제어와 결함허용 및 실시간적 처리가 가능해야 한다. 그러나 기존의 메일 시스템은 전송위주로서 작업흐름을 자동화하려는 경우에 적합하지 못하다. 이러한 문제를 해결하기 위하여 작업흐름 설계가 가능하고 작업흐름제어를 자동화 할 수 있는 분산워크플로우 엔진이 필요하다. 본 논문에서는 웹 메일을 이용하여 작업흐름을 그래픽 인터페이스로 작성하고 이를 절차적 수행이 가능한 스크립트 코드를 생성하는 브라우저를 작성하였으며, 분산환경에서 태스크 처리를 위한 프로세스 스케쥴러 및 서버노드의 결함 발생시 이를 허용하는 전처리기를 지닌 프로세스 엔진을 설계하였다. 이 이스템은 서버의 결함이나 사용자의 부재시 처리를 대행하므로 시스템의 신뢰성과 가용성을 향상시키고, 데이터베이스 기반 워크플로우 시스템보다 비용을 감소시킨다.

• 품질경영학회지
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• 제32권2호
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• pp.168-190
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• 2004

In these days of world-wide business environment, the characteristics of quality management are variety, specialty, decentralization, totality, etc. Thus nowadays quality management is demanded to incorporate these new concepts. We propose a web-bused distributed expert system for this purpose. The system consists of four expert systems for design of experiment, acceptance inspection, statistical process control and reliability management corresponding to design quality, incoming-material quality, manufacturing quality and usability quality, respectively, throughout the total product life cycle. Each distributed expert system at the horizontal level in the hierarchy carries out its own quality jobs independently. At the lower level in the hierarchy there is an expert system for measurement analysis to provide reliable data, and at the upper level, an expert system for total quality management to coordinate, integrate and make final decisions. A prototype has been developed and its application is presented.

• 한국CDE학회논문집
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• 제12권4호
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• pp.233-244
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• 2007

Web Services are a distributed component technology based on XML and Web. The Web Services are used to integrate heterogeneous systems under the distributed environment. In this study, the concept of Web Services for CAD (WSC) is introduced, which aims at interoperation with CAD systems using the Web Services. This paper introduces one part of the WSC which enables remote users or applications to retrieve the geometries and the design history of CAD models using the Web Services. This paper proposes an architecture of the WSC, the data model and the interfaces for retrieving CAD model information, and the way to apply the WSC to commercial CAD systems.

• 전기전자학회논문지
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• 제13권3호
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• pp.24-31
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• 2009

The computation time of FEA(finite element analysis) for one model may range from a few seconds up to several hours according to the complexity of the simulated model. If these FEA is used to calculate the objective and the constraint functions during the optimal solution search, it causes very excessive execution time. To resolve this problem, the distributed computing technique using internet web service is proposed in this paper. And the dynamic load balancing mechanisms are established to advance the performance of distributed computing. To verify its validity, this method is applied to a traditional mathematical optimization problem. And the proposed FEA-based optimization using internet distributed computing is applied to the optimal design of the permanent magnet dc motor(PMDCM) for automotive application.

• 한국전산구조공학회:학술대회논문집
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• 한국전산구조공학회 2007년도 정기 학술대회 논문집
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• pp.707-712
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• 2007

Recently, the rapid progress of Internet and Network affects engineering design environment as well as business fields to utilize Web technologies to enhance it's competitiveness in the world. This situation has also caused many companies to seek out the possibility to increase the collaboration between different organizations within their Product design process. Thus. this research shows the web based distributed design system framework which involves Workflow-based framework that enables to automate, integrate and manage the design process, such as CAD, CAE, Optimization tools.

• 한국정보통신학회논문지
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• 제9권3호
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• pp.540-546
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• 2005

본 논문에서는 기존의 웹 하드디스크보다 쉽게 기능을 확장할 수 있고, 웹에서의 일반 어플리케이션을 보다 좀 더 간편하게 사용자의 요구에 맞도록 커스터마이징이 가능한 웹 스토리지 기반의 그룹오피스 시스템을 설계하고 구현하였다. 제안하는 웹스토리지는 다수의 스토리지 서버가 모여서 구성되는 분산 시스템이다 이 웹스토리지는 사용자의 위치에 따라 서비스해 주는 서버를 달리하는 방법을 제공하여 보다 빠른 스토리지 서비스가 가능하다.

• 한국정밀공학회:학술대회논문집
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• 한국정밀공학회 1996년도 추계학술대회 논문집
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• pp.509-513
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• 1996

The information technology of computers and computer tools have become so powerful that virtual enterprises are not just concepts any longer The virtual enterprises comprise distributed facilities and it is necessary to have a collaborative system among them. This paper proposes the modeling process of web-based collaborative system in the distributed manufacturing environment. It also presents the information infrastructure in order to communicate and to share the information more efficiently among the collaboration subsystem. The web-based collaborative system consists of four processes: 1) product design, 2) procurement of DB information, 3) query process, and 4) negotiation. The proposed web-based collaborative system will be implemented with network technologies.

• 한국CDE학회논문집
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• 제5권4호
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• pp.373-379
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• 2000

This paper deals with the study of distributed design system and the implementation of JAVA based initial design system using CORBA/sup [1-3]/. In the state of initial design, designer should consider other information related to a design part. In this case, designer has a difficult problem to search and calculate distributed data. We propose a special connector named ‘Allocator’and implement an initial design system AIDS(Agent based Initial Design system). AIDS can help designer search and calculate the distributed information. In this study, JAVA and CORBA were chosen for handling network and distribute programming. AIDS focuses on the possibility of incremental concurrent design capability. AIDS is comported of Request-Agent, Calculator-Agent, View-Agent, Search-Agent, and ‘Allocator’. The proposed system can be used for designing initial design of a gripper in the web regardless of operating system.

• 한국콘텐츠학회논문지
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• 제5권1호
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• pp.101-108
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• 2005

본 논문에서는 SOAP(Simple Object Access Protocol)기반 웹 서비스의 문제점인 확장성을 REST(REpresentational State Transfer)모델을 이용하여 해결한 RESTful SOAP 기반 웹 서비스 방식을 제안한다. 또한 웹 서비스 응용으로 전표 데이터 처리에 대한 웹 서비스를 SOAP 및 RESTful SOAP 방식으로 구현하여 서로의 장단점을 비교하고, 추후 웹 서비스 구축에 하나의 프로토타입으로 제시한다. REST는 분산 컴퓨팅 모델이며, 세계에서 가장 큰 분산 응용인 웹에서 사용하고 있는 웹 구조 스타일 모델이다. REST에서 리소스의 식별은 URI로, 상태는 상태가 표시된 문서(리소스)로써 HTTP를 통해 전달된다. 리소스의 내용은 XML로 기술하며, 리소스 탐색 및 참조에는 HTTP의 표준 메소드인 GET, PUT, POST, DELETE 등만을 이용하는 것으로 분산컴퓨팅을 모델링하고 있다. 본 논문의 결과는 전자 상거래시스템 구축의 주요 플랫폼인 웹 서비스의 효율적인 개발에 기여할 것으로 전망된다.

• 한국CDE학회논문집
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• 제5권1호
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• pp.12-22
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• 2000

Network and Internet technology opens up another domain for building future CAD/CAM environment. The environment will be global, network-centric, and spatially distributed. In this paper, we present an approach for network-centric feature-based modeling in a distributed design environment. The presented approach combines the current feature-based modeling technique with distributed computing and communication technology for supporting product modeling and collaborative design activities over the network. The approach is implemented in a client/server architecture, in which Web-enabled feature modeling clients, neutral feature model server, and other applications communicate with one another via a standard communication protocol. The paper discusses how the neutral feature model supports multiple views and maintains naming consistency between geometric entities of the server and clients. Moreover, it explains how to minimize the network delay between the server and client according to incremental feature modeling operations.