시뮬레이션 기반 조선생산실행시스템 프레임워크 설계

이광국,Lee, Kwang-Kook 한국정보통신학회 2011 한국정보통신학회논문지 Vol.15 No.9

조선소에서 생산계획은 중추 신경적인 생산활동 중의 하나이다. 생산 중일정계획과 실행계획 간의 괴리로 인해 생산현장에서는 공정관리를 위한 충분한 정보를 얻지 못하고 있다. 본 논문에서는 생산계획과 통제 프로세스 분석을 통해 중일정계획과 실행계획 차이를 분석하고, 조선 생산실행시스템의 필요성을 도출한다. 이를 바탕으로 시뮬레이션 기반 조선생산실행시스템(SPEXS)를 정의하고, 시스템적 요구사항 분석 프로세스를 통해 본 시스템의 기능적 아키텍처를 설계하며, 아키텍처의 기능요소를 기반으로 프레임워크를 구축한다. 제안된 프레임워크를 통해 생산계획의 신뢰도를 높이고, 계획 간의 실시간 피드백이 가능할 것으로 사료된다. Production planning is one of the most important activities in shipbuilding enterprises. Shop-floor supervisors and planners still do not have enough information to effectively analyze shop operations because of the difference between production planning and shop-floor scheduling. In this paper, process analysis was conducted between production planning and shop-floor control to clarify the difference, and the necessity of the manufacturing execution system(MES) was derived in a shipyard. Therefore, the simulation-based ship production execution system(SPEXS) was defined by analyzing characteristics of MES. The architectural functions of the system were deducted from the process of requirement analysis. The SPEXS' framework was constructed on the basis of the architectural functions. This framework will provide more reliable production schedules and allow engineers to plan and control shop operations in real-time.

판넬블록 생산관리를 위한 시뮬레이션 기반 조선생산실행시스템 개발

이광국,김영훈,Lee, Kwang-Kook,Kim, Young-Hun 한국정보통신학회 2011 한국정보통신학회논문지 Vol.15 No.11

조선소에서 판넬블록 생산공정은 가장 많은 물량을 처리해야 하는 중요하고 복잡한 공정이 고, 모든 선박 및 해양구조물의 하부는 반드시 판넬블록 생산 공정을 거쳐야 하기 때문에 판넬블록 생산공정은 병목공정으로 평가된다. 공정의 생산성을 극대화하기 위해 본 논문에서는 디지털 선박생산에서 가장 중요한 기술 중의 하나인 시뮬레이션과 최적화기법을 활용하여 조선생산실행시스템(SPEXS)을 개발하였고, 판넬블록조립장 적용사례로 SPEXSPanel을 구축하여 향상된 일정계획을 수립하는 효과를 보였다. 더불어 SPEXS-Panel은 지속적인 개선을 통해 야드 생산성 향상에 도움을 줄 수 있을 것으로 기대된다. The management of a panel block shop in a shipyard is a complex process that entails the largest amount of work and in which many decisions are involved. Shipbuilders have considered the process as a bottleneck since every panel for every ship and offshore hull structure must be processed through the shop. In order to maximize process productivity, simulation-based ship production execution system(SPEXS) is proposed for panel block operations utilising discrete-event simulation and simulated annealing. An application of panel block assembly shop, called SPEX-Panel supports production planners by general dispatching rules and metaheuristics to make better scheduling decisions on the shop floor. In addition, the system will help increase productivity in the yard with continuous improvement.

Townscape 관점에서 부산시 도시경관 유형분석을 통한 도시관리

李光國(Lee Kwang-Kook),楊偉周(Yhang Wii-Joo) 동북아시아문화학회 2008 동북아시아문화학회 국제학술대회 발표자료집 Vol.- No.-

The purpose of this study is to investigate application the typology of Busan city landscape to the urban management using visual elements from the townscape viewpoint. Current problems and solutions by the landscape typology were suggested through the questionnaire survey for citizen and landscape specialists to implement the detailed landscape plan of Busan. The following contents were included: urgency of improvement, direction of the plan, management by region. The survey was conducted by the interview and self-administered questionnaire during 10 days (2008.08.18-08.27). Two groups like specialist (210) and citizen (163) were participated in the survey. The SPSS (Ver. 14.0) was used for statistical analysis. The results of this study found that specific guidelines for implementation of the detailed townscape be suggested such as arrangement, size and height, form and appearance, texture, outdoor space, outdoor signage, color, and night landscape.

디지털 생산 시뮬레이션 기반의 판넬라인 일정계획지원 시스템 구축

이광국(Kwang Kook Lee),최동환(Dong Hwan Choi),한상동(Sang Dong Han),박주용(Ju Young Park),신종계(Jong Gye Shin) 대한조선학회 2006 大韓造船學會 論文集 Vol.43 No.2

워터프론트로서 낙동강 하구의 관광개발 : 부산시 관광개발계획을 중심으로

이광국(Lee,Kwang-Kook),양위주(Yhang,Wii-Joo) 동북아시아문화학회 2011 동북아 문화연구 Vol.1 No.28

The estuary of Nagdong river lies in a buffer zone between the western Busan region that integrates physical facilities related to a port and an industrial complex and the middle Busan region that redevelops the urban core. So the tourism development of this area needs be approached with the viewpoint of urban competitiveness, sustainable development, and urban regeneration of Busan. This research is to review the study area through four master plans from the point of waterfront. Busan tourism development master plan is a legal plan formulating every five years under the Tourism Promotion law. The result of these findings suggested as follows: First, the status of the study area is promoted from a fringe area to interested area and also recognized as the place with development potential due to the emphasis of coastal tourism since the 2nd plan. Second, the estuary dam, a man-made facility that exists between the river and the sea, has been an obstacle in developing the area. Third, though the study is influenced on building future Busan, the priority of development is limited because of the greenbelt and legal conditions.

첨단 함형의 레이더 반사면적 해석

권현웅,홍석윤,이광국,김종철,나인찬,송지훈,Kwon, Hyun-Wung,Hong, Suk-Yoon,Lee, Kwang-Kook,Kim, Jong-Chul,Na, In-Chan,Song, Jee-Hun 해양환경안전학회 2014 해양환경안전학회지 Vol.20 No.5

In this paper, Radar cross section (RCS) calculations of advanced naval vessels model with RCS reduction methods are simulated and RCS results are discussed. Especially, this paper are mainly focusing on the facts influencing on RCS, the ways minimizing RCS and material characteristics of RCS changing-rate. RCS analysis results are given for a DDG-1000 type advanced naval vessels, which show that as the elevation angle increased 10 degree, the mean RCS value increased 23.91 dBsm. Also, as the superstructure angle increased 6 degree, the mean RCS value reduced 1.27 dBsm. Finally, the radar absorbing material attachment at the front and back superstructure have been reduced 2.27 dBsm in terms of mean RCS value. 본 연구에서는 첨단 함형에 레이더 반사면적 감소기술을 적용하고 특성을 분석하였다. 특히, 레이더 반사면적에 영향을 주는 요소, 레이더 반사면적을 최소화 하는 방안, 표적의 특수 재질 물성에 대한 레이더 반사면적의 변화 영향을 고찰하였다. DDG-1000 type 첨단 함형의 함정 고각별 레이더 반사면적 해석 결과 고각이 10도 높아짐에 따라서 RCS 평균값이 23.91 dBsm 증가하는 것을 확인하였다. 또한, 함정 상부구조물의 경사각이 6도 증가함에 따라서 RCS 평균값이 1.27 dBsm 감소하는 것을 확인하였다. 마지막으로 상부구조물 앞면과 뒷면에 전파흡수체를 부착한 경우 RCS 평균값이 2.27 dBsm 감소 하는 것을 확인하였다.

시뮬레이티드 어닐링을 활용한 조선 소조립 라인 소일정계획 최적화

황인혁,노재규,이광국,신종계,Hwang, In-Hyuck,Noh, Jac-Kyou,Lee, Kwang-Kook,Shin, Jon-Gye 한국시뮬레이션학회 2010 한국시뮬레이션학회 논문지 Vol.19 No.1

Productivity improvement is considered as one of hot potato topics in international shipyards by the increasing amount of orders. In order to improve productivity of lines, shipbuilders have been researching and developing new work method, process automation, advanced planning and scheduling and so on. An optimization approach was accomplished on short-term scheduling of subassembly lines in this research. The problem of subassembly line scheduling turned out to be a non-deterministic polynomial time problem with regard to SKID pattern’s sequence and worker assignment to each station. The problem was applied by simulated annealing algorithm, one of meta-heuristic methods. The algorithm was aimed to avoid local minimum value by changing results with probability function. The optimization result was compared with discrete-event simulation's to propose what pros and cons were. This paper will help planners work on scheduling and decision-making to complete their task by evaluation.

판넬 블록공정 모델에 대한 일정검증 시뮬레이션 시스템

이필립,오대균,이광국,신종계,Lee, Phi-Lippe,Oh, Dae-Kyun,Lee, Kwang-Kook,Shin, Jong-Gye 대한조선학회 2009 大韓造船學會 論文集 Vol.46 No.6

There were many simulation models that made for validation of industrial environment and estimate of efficiency to be constructed. And there will be more simulation models made for same reason, too. Already, there have been a lot of simulation models in industry field and scholar labs. To reuse these simulation models, it is necessary to find common properties and make the high abstract simulation model. Based on this idea, this study shows to define the high abstract simulation model to be able to specialize in need and to make the software framework for connecting the specific simulation model to the abstract model. And it is held up as the example that applying the simulation framework to the Ship Panel Block shop simulation model.

해양스포츠 레저산업과 어촌계의 연안공간계획을 위한 상생전략 방안 연구

박준수(Jun-Soo Park),이광국(Kwang-Kook Lee) 한국엔터테인먼트산업학회 2015 한국엔터테인먼트산업학회논문지 Vol.9 No.1s

이 연구는 우리나라의 남해 지역에서 생산되고 활용처리 되는 모든 해양스포츠 레저정보 및 공간활용을 어촌지역과 연관 지어 상생할 수 있는 방안을 제시하고자 하였다. 연안공간계획 사례분석을 통해 해양스포츠 레저산업과 어촌계가 연안공간에 대해 갈등 없이 공유할 수 있는 방안을 제안 하였다. 도출한 추진전략을 토대로 다음과 같은 결과를 도출 한다. 첫째, 어촌의 난개발과 관광자원 활용의 미흡으로 연안공간관리가 이루어지지 않고 있다. 둘째, 국내 해양레저산업이 고조되면서 법률적, 경제적, 사회적 변화에 맞게 편의 시설의 확충이 필요하다. 셋째, 해양레저 산업 정착을 위한 어촌과 상생할 수 있는 제도적 검토 및 지원이 필요하며, 다변화 되고 있는 해양레저 산업을 위해 인프라 및 정책 등과 관련한 규정을 재정립 하여야 한다. 넷째, 연안공간계획 체계를 정립하고 연안환경 및 생태계에 영향을 모니터링 하여 연안공간체계 구축 및 관리 수단의 마련이 절실하다. 어촌계의 경제적 효과와 높은 문화적 환경을 누리고 해양레저 산업의 발전을 위해 해양스포츠와 어촌계의 긴밀한 공조가 필요하며 이러한 단계에서 필요로 하는 국가나 지방자치 단체의 활동이 절실하다고 하겠다. 또한 어촌계와 상생하여 동반성장이라는 측면에서 보다 효과적으로 대처하고 발전하기 위해선 지형의 활용을 최대로 살리면서 공간을 계획할 수 있는 기반을 마련하는 것이 문제해결의 실마리라 생각된다. This research aims to propose a win-win strategy for relationship between marine sports leisure industry and fishing village cooperatives in terms of marine leisure information and coastal spatial plan. Case analysis on coastal spatial planning was undertaken to resolve their conflicts by maximizing space in usage. When it comes to the study in details, firstly there were lack of spatial management as well as low utilization of tourist attractions because of thoughtless development in the fishing village. Secondly, as domestic marine leisure market grows, the convenient facilities are required to provide entertainment services to customers from the point of legal, economical, and social views. Thirdly, this paper derives needs of the institutional reviews and supports win-win situation for coastal spatial planning. Also regulations such as infrastructure, policy should be reestablished for diversification of the marine leisure markets. Finally, coastal spatial planning is a top-priority activity to monitor coastal environment and ecosystem to construct marine spatial information and management means. Therefore, two conflicting groups needs closely cooperation and both the central and local government helps each other at the same time. In addition, coastal spatial planning is a clue to resolve the problem for maximizing the limited space in usage and move towards blue oceans.

시뮬레이션 기반 조선소 레이아웃 설계 프레임워크 개발

송영주(Young Joo Song),이광국(Kwang Kook Lee),이동건(Dong Kun Lee),황인혁(In Hyuck Hwang),우종훈(Jong Hun Woo),신종계(Jong Gye Shin) 대한조선학회 2008 大韓造船學會 論文集 Vol.45 No.2