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BIM 기반의 프로젝트 단계별 리스크관리 모델에 관한 연구
전승호(Seung Ho Jeon),최명석(Myung Seok Choi),이주호(Joo Ho Lee) 한국방재안전학회 2010 한국방재안전학회 논문집 Vol.3 No.1
최근 대두되고 있는 BIM 기술은 다양한 강점을 가지고 있다. 하지만 BIM을 단순히 3차원 모델로 생각하는 오해와, BIM 적용에 대한 체계적인 분석 및 시스템화의 부족으로 인해 BIM의 건설산업 도입은 어려움을 가지고 있다. 따라서 본 논문에서는 BIM 기반의 건설프로젝트에서의 리스크 관리를 목적으로 하여 그 적용 범위에 대한 체계적인 분석을 통하여 최적화된 BIM 기반의 프로젝트 단계별 리스크관리 모텔을 제시하고자 한다. Recently a construction industry introduces information technology that brings about many advantages in the early planning phase, design phase and construction phase. Nevertheless a BIM has a many benefits, it has limits which are not only usually using 3D modeling but also limit of making full use of practical affairs because of a lack of connecting varietals of progress of work. To solve these uppermost limits, this research is presenting unified systems to use in risk management which are efficient management of space and non-space information, space analysis.
전승경(S. G. Jeon),황정호(J.H. Hwang),나정기(J.G. Na),김준형(J. H. Kim),김현식(H. S. Kim) 한국자동차공학회 2006 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
If we try tensile test of rubber, stress-strain relation has actually hysterisis mechanism. In other words, if a visco-elastic material at rest is suddenly subjected to a constant strain rate. the stress will increase gradually to approach asymptotically the exact value. We call its time dependent quality as visco-elasticity, the material as visco-elastic material. Rubber has nonlinear hyper visco-elastic characteristics. So, the purpose of this paper is, first, to clarify the characteristics of stress relaxation in swaging process during hose manufacturing, and second, to analyze the relationship between cycling stress by brake motion due to the repeated steering motion and stress relaxation, and finally, to get the technology of forecasting the life expectation period of rubber brake hose by visco-elasticity point of view. This paper presents theoretic analysis of visco-elasticity and stress relaxation. With test results, we could get the property of visco-elasticity. Using the material properties and numerical computer simulation, we find out the result of visco-elastic characteristics of rubber and braided yam rubber hose. This visco-elastic analysis technology can help predict the life cycle of rubber hose. We are going to do this research further. The result will be helpful to design good brake hose scientifically. which help good brake system design.
전승호(Seung Ho Jeon) 대한설비관리학회 2001 대한설비관리학회지 Vol.6 No.3
N/A We proposed a prototype design of an web-based intelligent inventory management system for logistics management focused on its functional and working algorithm. Intelligent system concepts and export knowledges concerning inventory management are adopted to develop this system composed of three layers such as network communication layer, problem-solving layer and user interface layer. The problem-solving layer is composed of inference engine, model base, knowledge base and data base agent. We will describe the mechanism of the proposed web-based lIMS with an emphasis on the role of each agents. The IIMS can select an appropriate inventory model considering logistics situation and provide the solution for it by utilizing stored algorithm of the selected inventory model.
SMV를 이용한 Structural Decision Table 명세의 정형검증
전승재(Seungjae Jeon),지은경(Eunkyoung Jee),차성덕(Sungdeok Cha) 한국정보과학회 2006 한국정보과학회 학술발표논문집 Vol.33 No.1
원자력 발전소의 제어 소프트웨어는 안전성이 중요시 되는 시스템이다. KNICS 컨소시엄의 APR-1400 RPS개발 프로젝트에서는 시스템의 안전성과 품질을 높이기 위하여 요구사항을 NuSCR 정형명세로 기술하였다. 명세에 대한 분석을 위하여 SMV를 이용한 자동화된 정형검증 기법이 사용되는데, 본 논문에서는 테이블 형태의 명세인 SDT까지 그 범위를 확장하는 방법을 제안한다. 제안하는 방법의 효율성을 입증하기 위하여 실제 프로젝트에서 개발중인 시스템의 일부를 예제로 사용하였다.
田勝昌(Jeon Seungchang) 미술사연구회 2008 미술사연구 Vol.- No.22
It has long been of interest to many scholars to investigate the date of the establishment of the royal kiln in the Joseon Dynasty. Despite the profound interest in ascertaining this date, only hypotheses could be made from different perspectives, as there is neither an authentic historical record nor remains that allude to the date. It has been, hence, thought to be either in the fifteenth or in the sixteenth century. However, recently we have narrowed down the date to between 1467 and 1469 based on the interpretation and examination of historical records. There, however, still remains a possibility for another interpretation of the record suggesting a different date. This paper investigates the royal kiln in Gwangju during the early period of the Joseon Dynasty focusing on the time, name, and administrator of naesi (內侍) and beonjogwan (燔造官). After having examined the formerly asserted theories and problems concerning the date of the first-built royal kiln, I have concluded that the royal kiln was built in Gwangju in approximately June 1466. This deduction is based on the prohibition of government and private use of porcelain, the discontinuance of the existing tributary system, the strict control of kaolin producing areas, the supervision of related affairs by Gongjo (工曹), and the completion of the first stage of Gyeongguk- daejeon (經國大典, National Administration Code) compilation at this time. I also came to understand that the establishment of the royal kiln is closely related to the rapid changes in the numbers of local kilns. Additionally, I ascertained that the royal kiln in Gwangju during the fifteenth and sixteenth centuries were called sagiso (沙器所), and not bunwon (分院). It was also found that sagiso was supervised by the beonjogwan, but before the royal kiln was built the production of porcelains for the royal court was administered by naesi. This production system had already been in practice since the late Goryeo Dynasty, and it continued until the early Joseon Dynasty with no particular changes. Later in April 1467 nokgwan (祿官, paid official) was appointed to the Saongwon (司饔院). I, however, judged that the phrase “nokgwan was appointed for the first time”alone cannot verify that the royal kiln was built and begun its operation, presenting issues such as naesi, beonjogwan and wood market for the royal kiln to support my assertion. The establishment of the royal kiln led to significant changes in the ceramic history of the Joseon Dynasty. It laid a cornerstone in the royal kiln operations of the Joseon Dynasty whose systemic structure was organized by the state. Moreover, it served as a milestone in achieving a higher standard of porcelain culture through developing the royal court’s whiteware, porcelain. This paper examines the establishment period of the first royal kiln and its administrator, and it aims to contribute to understanding and unveiling the identity of the royal kiln in the early period of the Joseon Dynasty.