미국의 비파괴검사기술자 자격인정제도의 운영동향

하기수 한국비파괴검사학회 2003 학술대회 논문집 Vol.- No.1

각국의 비파괴검사기술자에 대한 자격인정제도는 그 근본취지나 인정절차 등에 있어서 서로 유사한 부분이 많이 있음에도 불구하고 체계 및 세부내용이 상이한 점과 자국 보호정책 혹은 상호인정의 결핍에 의해 기술자 개인이나 소속 기관은 동일 분야의 자격을 중복하여 취득하는 경우가 많았다. 특히 우리나라의 경우에는 국가기술자격법에 따른 비파괴검사부문 국가기술자격자가 많이 배출되어 있는데도 외국 자격, 특히 미국 ASNT의 NDT Level에의 의존도가 대단히 큰 현실임을 부인할 수 없는 실정이다. 그 중에서도 핵심사항인 ASNT의 NDT LevelⅢ프로그램은 세계 50개국 이상에서 5000명 이상의 기술자를 배출하여 다른 국가에서 비파괴검사 자격을 취득하게 되는 최대 인정기관으로 볼 수 있다. 비파괴검사기술자 자격의 국제규격 부합화와 향후 국내 비파괴검사 자격제도 운용에 대한 개선대책이 필요한 시점에서, 여기서는 ASNT의 자격인정제도인 SNT-TC-1A, CP-189 및 ACCP의 내용을 비교 설명하고 그 현황을 분석하였다.

Taylor & Francis : NEPHROTOXIC POTENTIAL AND TOXICOKINETICS OF MELAMINE COMBINED WITH CYANURIC ACID IN RATS

( Ghee Hwan Kim ),( Mi Jeong Kang ),( Keum Han Noh ),( Do Gyeong Oh ),( Won Ku Kang ),( Hye Gwang Jeong ),( Kwang Youl Lee ),( Han Gun Kim ),( Hyung Sik Kim ),( Tae Cheon Jeong ) 전남대학교 약품개발연구소 2014 약품개발연구지 Vol.23 No.-

To investigate the nephrotoxic potential of melamine (MEL) and cyanuric acid (CA) in male Sprague-Dawley rats, 7-d repeated-dose studies were performed. The experimental groups of MEL100 and CAl00 were orally administered with MEL and CA at 100 mg/kg/d for 7 d, respectively. In groups dosed with MEL-cA mixtures, melamine and cyanuric acid (1:1) were simultaneously administered at 4, 20, or 100 mg/kg/d for 7 d (i.e., MEL-CA4, MEL-CA20, or MEL-CA 100, respectively). Body weights were not markedly affected in MEL 100, CA 100, and MEL-CA4 groups, but significantly reduced in MEL-CA 20 and 100 rats. Most parameters determined in sera and tissues were not markedly altered in MEL 100, CA 100, and MEL-CA4-treated rodents. However, BUN, creatinine, total protein, and kidney weights were significantly increased in MEL-CA20- and MEL-CA100-treated animals. Renal histopathologic findings also revealed signs of toxicity, including tubular dilatation, crystal deposition, granulomatous tubulo-interstitial inflammation, and tubular necrosis with regeneration. Data suggested that the combination of MEL and CA might be responsible for observed nephrotoxicity that was not seen following individual exposure to either MEL or CA alone. Subsequently, the concentrations of MEL and CA were determined in serum, urine, and kidney tissues by using liquid chromatography-mass spectrometry. Toxicokinetic studies indicated that MEl or CA alone might be eliminated almost completely within 24 h after dosing showing no accumulation in kidney. However, the combined MEL-CA dose produced marked accumulation of chemicals in blood and kidneys. These results suggested that combined MEL and CA might produce renal toxicity due to significant chemical accumulation in kidney accompanied by low excretion.

Robust Nonlinear Predictive Control of Underwater Wall-Climbing Robot

Ghee Yong Park(박기용),Ji Sup Yoon(윤지섭),Young Soo Park(박영수) 제어로봇시스템학회 1998 제어·로봇·시스템학회 논문지 Vol.4 No.6

Medicinal Chemistry : NEPHROTOXIC POTENTIAL AND TOXICOKINETICS OF MELAMINE COMBINED WITH CYANURIC ACID IN RATS

( Ghee Hwan Kim ),( Mi Jeong Kang ),( Keum Han Noh ),( Do Gyeong Oh ),( Won Ku Kang ),( Hye Gwang Jeong ),( Kwang Youl Lee ),( Han Gun Kim ),( Hyung Sik Kim ),( Tae Cheon Jeong ) 영남대학교 약품개발연구소 2015 영남대학교 약품개발연구소 연구업적집 Vol.25 No.-

To investigate the nephrotoxic potential of melamine (MEL) and cyanuric acid (CA) in male Sprague-Dawley rats,7-d repeated-dose studies were performed. The experimental groups of MEL100 and CA100 were orally administered with MEL and CA at 100 mg/kg/d for 7 d, respectively. In groups dosed with MEL-CA mixtures, melamine and cyanuric acid (1:1) were simultaneously administered at 4, 20, or 100 mg/kg/d for 7 d (i.e., MEL-CA4, MEL-CA20, or MEL-CA100, respectively). Body weights were not markedly affected in MEL100, CA100, and MEL-CA4 groups, but significantly reduced in MEL-CA 20 and 100 rats. Most parameters deter-mined in sera and tissues were not markedly altered in MEL100, CA100, and MEL-CA4-treated rodents, However, BUN, creatinine, total protein, and kidney weights were significantly increased in MEL-CA20-and MEL-CA100-treated animals. Renal histopathologic findings also revealed signs of toxicity, including tubular dilatation, crystal deposition, granulomatous tubu-lo-interstitial inflammation, and tubular necrosis with regeneration. Data suggested that the combination of MEL and CA might be responsible for observed nephrotoxicity that was not seen following individual exposure to either MEL or CA alone. Subsequently, the concentra-tions of MEL and CA were determined in serum, urine, and kidney tissues by using liquid chromatography-mass spectrometry. Toxicokinetic studies indicated that MEL or CA alone might be eliminated almost completely within 24 h after dosing showing no accumulation in kidney. However, the combined MEL-CA dose produced marked accumulation of chemicals in blood and kidneys. These results suggested that combined MEL and CA might produce renal toxicity due to significant chemical accumulation in kidney accompanied by low excretion.

Development of a Robust Nonlinear Prediction-Type Controller

Ghee Yong Park 제어로봇시스템학회 1998 제어로봇시스템학회 국내학술대회 논문집 Vol.1998 No.10

Transactivation of Fibronectin Promoter by HTLV - 1 Tax through NF - κB Pathway

(Tac Ghee Yi),(Byung Heon Lee),(Rang Woon Park),(In San Kim) 경북대학교 유전공학연구소 2000 遺傳工學硏究所報 Vol.14 No.-

Calculation of Spectral Efficiency for Estimating Spectrum Requirements of IMT-Advanced in Korean Mobile Communication Environments

Woo-Ghee Chung,박한규,Euntaek Lim,Jong-Gwan Yook 한국전자통신연구원 2007 ETRI Journal Vol.29 No.2

In this paper, we analyze the algorithm of the methodology developed by ITU for the calculation of spectrum requirements of IMT-Advanced. We propose an approach to estimate user density using traffic statistics, and to estimate spectrum efficiencies using carrier-to-interference ratio distribution and capacity theory as well as experimental data under Korean mobile communication environments. We calculate the IMT-Advanced spectrum requirements based on the user density and spectral efficiencies acquired from the new method. In the case of spectral efficiency using higher modulation and coding schemes, the spectrum requirement of IMT-Advanced is approximately 2700 MHz. When applying a 2×2 multiple-input multiple-output (MIMO) antenna system, it is approximately 1500 MHz; when applying a 4×4 MIMO antenna system, it is approximately 1050 MHz. Considering that the development of new technology will increase spectrum efficiency in the future, the spectrum requirement of IMT-Advanced in the Korean mobile communication environment is expected to be approximately 1 GHz bandwidth.

시각장애학교 전환교육 운영 실태 및 문제점에 대한 교사의 인식

손기순(Ghee-Soon Son),정은희(Eun-Hee Jeong) 조선대학교 교과교육연구소 2013 敎科敎育硏究 Vol.34 No.2

This study aimed to identify operational realities and overall perceptions of conducting the transition education schools for the visually impaired. In order to achieve this purpose, a survey was conducted with 152 teachers at the high school level in 12 schools for the visually impaired. The results were as follows. First, many of the respondents expected that the transition education will improve the quality of life, showing generally normal level of understanding on the concept of the transition education and the transition education plan. However, they were skeptical of its implementation in accordance with the intent of the transition education program. Second, School facilities were used for vocational education. It was positive to secure facilities, tools and materials for vocational education; and vocational education teachers had professional qualifications. Pre-college courses and college preparatory programs were also insufficiently operated. Third, Several problems were raised in planning and operating the transition education: lack of administrative/ financial support from the government, lack of transition education specialists, and insufficient cooperation between community agencies in supporting the transition education. Cooperation and support are still passive at this point in time with regard to cooperation with families including parents, support from the office of education. Urgent problem to be solved was to develop programs and facilities for the transition education; next was to expand opportunities of the transition education training for special education teachers; and to cultivate and secure the transition education specialities.

종합유선방송과 중계유선방송간의 정책갈등에 대한 이차원게임에 관한 연구

노기영(Ghee-Young Noh),이호범(Ho-Bum Lee) 한국방송학회 2003 한국방송학보 Vol.17 No.3

본 연구는 퍼트남의 이차원게임 이론틀에서 제시하는 합의범위의 결정요인을 중심으로 한국 케이블TV 정책형성과정에서 중계유선방송측과 종합유선방송측 간의 갈등구조를 분석하였다. 1994년부터 정책갈등 집단은 중계유선의 SO전환이라는 교집합을 설정해 놓고 시작하는 게임구조를 형성하였다. 즉 케이블TV 방송정책을 둘러싼 갈등구조에서 윈셋의 변화를 살펴본 결과 공보처를 중심으로한 종합유선방송 측은 주로 윈셋을 확대하였고, 정보통신부를 중심으로 한 중계유선방송 측은 중계유선의 SO 전환이라는 정책합의범위를 설정해 놓은 상태에서 자신들에게 유리한 방향으로 윈셋확대와 축소를 병행하였다. 본 연구결과를 통한 정책갈등의 이론적 함의를 정리하면 첫째, 케이블TV 정책결정은 단순히 정책결정집단인 정부부처가 독자적으로 결정한 것이 아니라, 그 내면에 존재하고 있는 관련집단 즉 사업자들의 이슈와 비용의 집중도와의 상호작용에 의해서 결정된다는 것이다. 둘째, 케이블TV 방송정책을 둘러싼 갈등구조 속에서 사업자들과 정책결정집단들은 자신들에게 유리한 방향으로 정책이 결정되기 위해 협박전략, 메아리전략등 다양한 게임전략을 구사하였다. 본 연구는 정책갈등 분석을 위해 방송정책연구에 적용될 수 있는 하나의 이론틀로 이차원게임이론을 소개함으로써 방송정책 분야의 연구지평을 넓히는 계기를 제공하고자 하였다. This study analyzed the conflict structure between system operators (SO) and relay operators(RO) in rolicy-making process of the Cable TV in Korea. Cable TV policy making has been established by the reciprocal action between the government authorities and the business proprietors. The policy game between SO and RO reflects duality of conflict structure that is shaped in the level of government policy group and the business proprietor. Along the two-level game framework by Putnam, the present research attempted to demonstrate the conflict structure and policy changes in Cable TV, What are the factors making win-set among the actors of bargaining game? The size of win-set is determined by the degree of issue homogeneity and the concentration of costs. The crucial factors of making win-set include the arrangement of internal power, preference. and ratification system. The win-set may be reduced or expanded by the strategy of policy decision group. In the Cable TV policy in Korea, system operators and Ministry of Public Relation expanded their win-set. while relay operators and Ministry of Communication performed both reduction and expansion of their win-set at the same time. This study showed two kinds of implication in the policy decision process of Cable TV. First. the policy decision has to consider the business proprietors' interests, which plays in second level of the policy game. Second, in order to make a decision what business proprietors and policy decision groups want in the conflict structure, they need to make full use of game strategy. Because every group involved in the policy game expects its preferred policy, the game strategy makes a decisive role in the policy making process.

디지털전환 시대 공영방송 재원 구조의 방향

노기영 ( Ghee Young Noh ) 국민대학교 사회과학연구소 2010 社會科學硏究 Vol.23 No.1