SESSION 2 . FMS / CIM Ⅱ : A CONCEPTUAL FRAMEWORK FOR AUTOMATIC PROCESS PLANNING

이경휘,정무영 ( Kyung Huy Lee,Moo Young Jung ) 대한산업공학회 1993 대한산업공학회 추계학술대회논문집 Vol.1993 No.-

가상 프로젝트 조직의 개인관점 지식역량 평가

이경휘(Kyung-Huy Lee),김철한(Cheol-Han Kim),우훈식(Hoon-Shik Woo) 한국산업경영시스템학회 2012 한국산업경영시스템학회지 Vol.35 No.4

Virtual project organization may be recognized as one of the promising business models in which many knowledge sources externalize through cross boundaries of knowledge-based organizations. This paper proposes a knowledge competence evaluation of virtual project organization based on the following perspectives: 1) Individual knowledge perspective, 2) Activity-oriented knowledge perspective, and 3) Knowledge-driven social network perspective. In the framework, individual knowledge competence having experienced or learned from knowledge-based activities and virtual networks in the project, should be evaluated according to the assumption that knowledge and collaboration competence depends on the activities and networks acquired proportionally by the past participation to projects. An illustrative SI example is given in order to validate the proposed evaluation and computing procedure.

Context-Driven Multi-Agent Approach for VO Configuration

이경휘(Kyung-Huy Lee),김덕현(Duk-Hyun Kim) 한국전자거래학회 2006 한국전자거래학회 학술대회 발표집 Vol.2006 No.-

가상기업은 비즈니스 기회에 대응하기 위해 기업 또는 개인이 갖는 핵심역량 및 자원들을 일시적으로 결합하여 가상 비즈니스를 수행하는 것을 의미한다. 유비쿼터스 컴퓨팅 환경에서 효과적으로 가상기업의 형성이나 운영을 지원하기 위해서는 이에 참여하는 멤버들 또는 멤버들간의 자율성(autonomy), 이질성(heterogeneity), 역동성(dynamism), 복합구조(structure) 등의 특성들을 상황(context)에 맞도록 설계 및 구현될 것이 요구된다. 본 논문에서는 이를 위해 컨텍스트 기반의 멀티에이전트 시스템 접근 방법을 제안한다. 컨텍스트는 가상기업을 구성하는 엔티티들의 상황(situation)을 서술하기 위해 사용되는 정보들의 집합으로 정의될 수 있는데, 주요 컨텍스트로서 가상기업의 구성요소인 액터(Actor) 컨텍스트와 액터간의 상호작용(Interaction) 컨텍스트에 대한 모델을 제시한다. 멀티에이전트를 구성하는 각 에이전트들은 가상기업의 특정 상황에서 컨텍스트를 가지며 컨텍스트 온툴로지와 함께 가상기업의 구조나 행위를 결정하는 데 유용하게 사용될 수 있다. Virtual Organization (VO) may be described as a a temporary alliance of enterprises that come together to share skills or core competencies and resources in order to better respond to business opportunities, and whose cooperation is supported by computer networks. In ubiquitous computing environment VOs should have the following key properties that distinguish them from traditional IT architectures: - Autonomy: The members of VO behave independently, constrained only by their contracts and environments; - Heterogeneity: The members of VO are independently designed and constructed, constrained only by the applicable interface descriptions; - Dynamism: The members of VO join or leave with minimal constraints. Thus, the configuration of VO changes at runtime; - Structure: VOs have complex internal structures, reflected in the relationships among their members; - Context: The members of a VO create, operate, change, and destroy its own context as well as group context in interactions they participate in, according to virtual businesses. Contexts have much effects on structure and dynamism of VO. The above properties of VOs closely match the properties of multi-agent systems augmented with context models of individuals or organizations as major constituents. According to Dey and Abowd, context is any information that can be used to characterize the situation of an entity. In VO, context comprises both high level context as VO constituents such as individuals, organizations, or VOs and low level context such as person, place, or objects as operational context within a high level context. In this sense, contexts are modeled as a network of situations. Situations models are interpreted to dynamically configure a federation of processes for observing entities and relations that define a situation. In this research, we present the context driven architecture of business collaborative network for virtual organization. The main contribution of this paper are (1) modeling a unified multilevel context model for VO and (2) providing multi-agent system architecture based on the context model. We evaluate our approach using a simple business service scenario.

가상 텔레케어 팀을 위한 퍼지신뢰평가 모델

이경휘(Kyung-Huy Lee),김효중(Hyo-Joong Kim) 한국산업경영시스템학회 2009 한국산업경영시스템학회지 Vol.32 No.2

Telecare, one of the e-healthcare services with ICT, is a promising technology which aims to monitor the state of patients and then provide the medical services appropriately in remote sites. Virtual telecare team based on the concept of virtual collaborative teams which consist of a patient, a doctor, and a telecare team, operates on a temporary basis in need. Reputation, which means the degree of a patient's belief to a doctor in consideration, is the most important factor to make the virtual telecare team trustable. In this paper, we propose the fuzzy reputation model of a virtual telecare team, which is a reputation-based trust model based on fuzzy set theory. An illustrative example is also given in order to show the applicability of the model to the concept of a virtual telecare team.

Object-Oriented Petri Net Model for Representation of Flexible Process Plan

Lee, Kyung Huy(이경휘) 대한산업공학회 1997 대한산업공학회지 Vol.23 No.4

회전형상 부품에서의 가공형상 특징의 자동인식에 관한 연구

이경휘(Kyung-Huy Lee),정무영(Moo-Young Jung) 제어로봇시스템학회 1992 제어로봇시스템학회 국내학술대회 논문집 Vol.1 No.1

회전형상 부품에서의 가공형상 특징의 자동인식에 관한 연구

이경휘(Kyung-Huy Lee),정무영(Moo-Young Jung) 대한전자공학회 1992 대한전자공학회 학술대회 Vol.1992 No.10

This paper presents a comprehensive methodology of automatic feature recognition for rotational parts. The parts of interest are rotational without deviation. In stage one, IGES formatted data of 2D engineering drawings are transformed into three independent graphs through upperhalf profile. In stage two, recursive evaluations are made to recognize features and relevant information is acquired. Finally, an example is evaluated to demonstrate the recognition power of the developed algorithm for rotational features.

A Context-based Multi-Agent System for Enacting Virtual Enterprises

Kyung-Huy Lee(이경휘),Duk-Hyun Kim(김덕현) 한국전자거래학회 2007 한국전자거래학회지 Vol.12 No.3

가상기업은 다양한 역할의 에이전트들이 상호 작용함으로써 공동의 목표를 달성하는 멀티 에이전트 시스템 (Multi-Agent System)으로 구현될 수 있다. 다만, 가상기업을 지원하기 위한 MAS는 멤버들의 이질성 (heterogeneity), 복합구조(complex structure) 등의 특성을 고려한 가운데 자율성(autonomy)과 역동성(dynamism)을 보장할 수 있어야 한다는 점에서 보다 고도화 된 기능(예: 컨텍스트)을 필요로 한다. 본 논문은 가상기업의 구성과 운영을 지원하기 위한 플랫폼으로 컨텍스트(context) 기반 MAS를 제안하기 위한 것이다. 컨텍스트 기반 MAS는 가상기업의 구성요소를 액터(Actor)와 액터 간의 인터랙션 (Interaction), 그리고 액터 컨텍스트 (Actor Context)와 인터랙션 컨텍스트(Interaction Context) 등으로 정의한다. 컨텍스트 기반 MAS는 액터들에 대한 단순한 상태 정보뿐만 아니라 목표, 역할, 작업, 작업자의 시간, 장소, 사용 기기 등 상황 정보 즉, 컨텍스트를 활용함으로써 의사결정이나 실행의 신속성, 정확성과 자동화 수준을 높일 수 있다. 컨텍스트 기반 MAS는 다양한 컨텍스트를 제어하기 위한 컨텍스트 온톨로지, 컨텍스트 모델, 컨텍스트 분석기와 추론기 등으로 구현될 수 있다. 하나의 가상기업이 공동 기술개발 파트너를 찾는 예제를 통해 본 연구의 타당성을 검토하였다. A virtual enterprise (VE) can be mapped into a multi-agent system (MAS) that consists of various agents with specific role(s), communicating with each other to accomplish common goal(s). However, a MAS for enacting VE requires more advanced mechanism such as context that can guarantee autonomy and dynamism of VE members considering heterogeneity and complex structure of them. This paper is to suggest a context-based MAS as a platform for constructing and managing virtual enterprises. In the Context-based MAS a VE is a collection of Actor, Interaction (among Actors), Actor Context, and Interaction Context. It can raise the speed and correctness of decision-making and operation of VE enactment using context, i.e., information about the situation (e.g., goal, role, task, time, location, media) of Actors and Interactions, as well as simple data of their properties. The Context-based MAS for VE we proposed(‘VECoM’)may consists of Context Ontology, Context Model, Context Analyzer, and Context Reasoner. The suggested approach and system is validated through an example where a VE tries to find a partner that could join co-development of new technology.

CIM 구축을 위한 FMC 운용 소프트웨어 개발

이경휘(Kyung-Huy Lee),김의석(Eui-Suk Kim),정무영(Mooyoung Jung),서석환(Suck-Hwan Suh),고병철(Byoung-Cheul Ko) 제어로봇시스템학회 1991 제어로봇시스템학회 국내학술대회 논문집 Vol.1 No.1

공정설계를 위한 객체지향 데이터 모델링

권성훈,이경휘 대전대학교 산업기술연구소 1999 산업기술연구소 論文集 Vol.10 No.2

Process Planning may be defined as the systematic determination of the methods by which a product is to be manufactured economically and competitively. In it's generic nature, process planning is a non-standardized decision process based on intensive data, knowledge, and heterogeneous functions such as process selection, process sequencing, machine selection, and tool selection etc. How to semantically build data and knowledge bases about features, machine, tools, cutting parameter is a key problem in developing data models that support the entire semantics about manufacturing features, processes, machines, tools, etc. for process planning. Object oriented data models have a modeling power of rich semantics on a real world. In this paper, an object oriented data model for process planning is proposed on hole feature machining. The proposed data model includes submodels of feature, processes, machines, tools, cutting parameters, and a relation model among them, the data model may be used for performing process selection, machine selection, tool selection, and cutting parameter determination. In DB implementation, the object oriented data model is transformed into a relational data base(Sybase) which is prevalent in the related market. An illustrative example is given for validating the proposed data model and DB implementation.