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오상균(Oh Sang-Gyun),임승준(Im Seung-Joon) 대한건축학회 2012 大韓建築學會論文集 : 構造系 Vol.28 No.9
High-Strength Concrete Shrinkage in early age intense hydration in order to prevent shortages of water required for the unit mix to some extent by external factors other than speed and quantity of supply is important. And in cementious by-product porous structure containing large amounts cured paste that conservatism is expected to be the source of moisture, cementitious by-product shrinkage reduction effect of using a high-strength concrete on the first phase of the study itself, cementitious by-product release of water, check the water supply that is likely to be decided. In this study, the level of cementitious by-product that can be controlled by producing models, high-strength concrete hydration process that occurs in the initial response to the shortage of water in fine grained in order to demonstrate the possibility of hydration of the pore structure itself to determine the evaporation rate of water through experiments on the movement of moisture over time was visualized.
오상균(Sang-Gun Oh),김성래(Sung-Rae Kim) 산업기술교육훈련학회 2008 산업기술연구논문지 (JITR) Vol.13 No.4
The ability of optical fiber sensors to displace traditional sensors for rotation, acceleration, electric and magnetic field measurement, temperature, pressure, acoustics, vibration, linear and angular position, strain, humidity, viscosity, chemical measurements, and a host of other sensor applications has been enhanced. In this paper is using the shift in the optical fiber Bragg grating(FBG) center wavelength due to mass change. In this paper is presented of the spectral characterization and shaping of FGB by scanning a mass element that affects a small grating fraction at a time, without permanent effects on the optical fiber when the various wavelength and strain is removed. That is, except when the optical fiber for mass is physically damaged.
오상균 ( Sang-gyun Oh ),김은기 ( Eun-ki Kim ) 한국정보처리학회 2007 한국정보처리학회 학술대회논문집 Vol.14 No.2
본 연구에서는 CBD 기반의 RUP 모델을 이용하여 재 사용이 가능한 컴포넌트들을 설계하였으며, 이를 이용하여 연구관리 시스템을 구현하였다. 이를 위하여 연구관리 시스템의 주요 사용자 인터페이스인 등록관리 및 변경관리를 위한 컴포넌트를 구성하였으며, 구성된 컴포넌트들은 관련 SW개발에 효율적으로 재 사용될 수 있을 것으로 생각된다.
오상균 ( Oh Sang-kyun ) 창조교육학회 2016 창조교육논총 Vol.18 No.-
Analog age has going down, the future of humanity is in the digital age, height. In the digital age, the creative knowledge-based society, not labor, based on high technology is produced. Many devices are no longer the analog hardware industry in the past. Companies have the ability to differentiate into situations where the software is to increase competitiveness. Top competitiveness in the digital age is the right software. As compared to the core of the hardware of the analog age software has two different characteristics. As a physical entity that it does not operate without the limitations in space, such as the Internet. Software knowledge is a core value is known as the most complex knowledge industry. The knowledge industry and creativity to create value. If it deviated a little bit of what I`ve done to think boldly discard the outdated idea should not unconditional. The creativity of a global knowledge base needed to succeed in the software age. Creative power of global value and necessity should as a software developer and empathy as well as all those who need to recognize the value of software. 5-Step schools while teaching lessons are conducted by applying academic interaction, as well as kidney creativity and ultimately develop new software to the global creativity and kidneys to go into foster talent to contribute to national development. Creative future-oriented classes are urgently requested for the future of humanity, empathy, will be able to grow into judgment, with practice power evenly leader.
순차적 실험계획법을 적용한 다층관 벨로우즈 형상 최적설계
오상균(Sang Kyun Oh),이광기(Kwang Ki Lee),서창희(Chang Hee Suh),정윤철(Yun-Chul Jung),김영석(Young Suk Kim) 대한기계학회 2011 大韓機械學會論文集A Vol.35 No.9
상용차용 다층관 벨로우즈는 우수한 유연성과 내구성이 요구되므로 단층으로 제조되는 승용차용 벨로우즈와는 다르게 다층의 형태로 제작된다. 단층 벨로우즈의 유한요소해석과 최적화에 대한 연구는 활발히 진행되고 있으나, 층과 층사이에 갭이 존재하는 다층형 벨로우즈의 유한요소해석과 최적화 연구는 미진하다. 따라서 본 연구에서는 해석의 신뢰성 향상을 위해 다층형 벨로우즈에 적합한 유한요소 모델을 제시하였으며, 다층관 벨로우즈의 형상 최적화를 위해 실험계획법과 D-Optimal 방법에 기반을 둔 순차적 실험계획에 의한 크리깅 메타모델을 적용하였다. Because of their high flexibility and durability, multilayer bellows are manufactured for use in commercial vehicles, while single-layer bellows are manufactured for use in passenger vehicles. A study based on the finite element method (FEM) and shape optimization for the single-layer bellows has been actively performed; however, until now, a study based on the FEM has rarely been performed for the multilayer bellows with gaps between the layers. This paper presents a finite-element modeling scheme for the multilayer bellows to improve simulation reliability during the evaluation of stress and flexibility. For performing shape optimization for the multilayer bellows, DOE (design of experiment) and the Kriging metamodel followed by the D-optimal method are used.