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조용진,정동윤,최홍대,박종희,손병화,Cho, Yong-Jin,Jeong, Dong-Youn,Choi, Hong-Dae,Park, Jong-Hee,Son, Byeng-Wha 한국생약학회 1998 생약학회지 Vol.29 No.3
Two isoflavonoids were isolated from the flowers of Pueraria lobata (Flos puerariae) guided initially fractionation based on brine shrimp lethality assay. The structures were identified as 4',5,7-trihydroxy-6-methoxyisoflavone (tectorigenin) and 4',7-dihydroxy-6-methoxyisoflavone (glycitein), respectively, on the basis of their spectroscopic and physicochemical evidences.
조용진(Yong-Jin Cho),한송이(Song-I Han) 한국해양공학회 2012 韓國海洋工學會誌 Vol.26 No.5
This study examined the use of LIT (lock-in infrared thermography) to detect defects in the welded parts of ships and offshore structures. A quantitative analysis was used with the filtering and texture measurement of image processing techniques to find optimized experimental condition. We verified the reliability of our methods by applying image processing techniques in order to normalize the evaluations of comparative images that showed a phase difference. In addition, it was found that a low to mid-range intensity of light exposure on the surface showed good results, whereas high exposure did not provide significant results. A lock-in frequency of around 0.1 Hz was satisfactory regardless of the intensity of the light source. In addition, making the integration time of the thermography camera inversely proportional to the intensity of the exposed light source during the experiment provided good results.
조용진(Yong Jin Cho) 성균관대학교 법학연구소 2016 성균관법학 Vol.28 No.3
올해는 ‘알파고’와 ‘가습기 살균제 사건’을 접하면서 그 어느 때보다 과학기술이 주는 편익과 위험이라는 이중적 면을 절실히 경험하고 있다. 이러한 사건을 통해 과학기술법학이 얼마나 중요한지를 실감하고 있으나 정작 과학기술법학이 무엇인지, 미래 과학기술법학이 가야할 길이 어디인지라는 본질적 질문에 대해서 현재 속 시원하게 답하고 있지는 못한 실정이다. ‘학문’이라는 개념으로부터 학문의 3대 내지 2대 요건을 추출할 수 있다. 학문의 3대 요건은 ‘행위(결과) . ‘대상’, 그리고 ‘방법’이 될 수 있고, 2대 요건은 ‘행위(결과)’와 ‘방법’이 일체화된다면 ‘대상’과 ‘방법’이 될 수 있다. 과학기술법학은 ‘과학기술법 또는 과학기술법에서의 여러 현상을 법학 연구방법론을 이용하여 연구하는 활동 또는 그런 지식체계’로 정의해 볼 수 있다. 이러한 정의에 충실하게 과학기술법학을 발전시키기 위해서는 과학기술법학의 연구대상을 명확히 할 필요가 있으며, 과학기술법학의 연구방법론으로서 법학의 일반연구방법론 뿐만 아니라 과학기술법학에 특유한 연구방법론을 개발할 필요가 있다. 그 연구방법론의 예로서, 과학기술의 진흥법과 안전법의 정합성을 도모하는 ‘정합성 법리 모델’을 제시해 보았다. 또한, 최근 주목을 받고 있는 ‘사전주의의 원칙’을 과학기술법학에 특유한 연구방법론으로 개선하여 적용할 필요성을 제시하였다. 과학기술법학의 경우, 무엇보다도 과학기술의 진흥법과 안전법을 정합적으로 추구하는 법이념-법원리-법규칙의 체계성을 개발할 필요성이 절실하다. 여기서 법이념은 과학기술진흥법과 과학기술안전법을 통괄하는 이념이 되어야 하고, 과학기술진흥법을 위한 법원리와 법규칙은 과학기술안전법을 위한 그것들과 정합적 관계를 형성할 수 있도록 해야 한다. 끝으로, 전국의 법학전문대학원에서 과학기술법학의 개념과 교육과정을 공유하는 노력이 있어야 하며, 그것을 실천하는 교재의 개발이 뒤따라야 한다. 과학기술법학은 결코 과학기술과 법이라는 병렬개념이 아니라 그들이 융합된 학문이 되도록 해야 한다. In this year, we have really experienced the impacts, in both the sides, of the benefit and risk from science and technology through the cases of AlphaGo and humidifier sterilizer . Even though these cases reminded us of the importance of science and technology law disciplines, we are, actually, wondering about the substantial questions that what is science and technology law disciplines and what is its future. We can extract the three or two requirements of disciplines from its concept. The three requirements of disciplines are action including the result from it , object , and methodology . The three requirements can be reduced to the two requirements of object and methodology when action is merged into methodology . Utilizing the above concept, the science and technology law disciplines can be defined by study for science and technology law and its related phenomena by means of legal study methodology, or legal knowledge system obtained from the study . For progress of science and technology law disciplines, it is necessary to specify the study object and to develop the study methodology. In this article, a model of legal integrity for promotion and safety laws of science and technology was introduced as a study methodology. Also, as for precautionary principle , a modification peculiar to science and technology law disciplines is required. Meanwhile, the systemicity of legal ideology-legal principle-legal rule should be constructed under the legal integrity for promotion and safety laws of science and technology. Finally, a curriculum and teaching materials for education of science and t echnology law disciplines should be developed. In conclusion, the science and technology law disciplines is not a parallel relation between science and technology and law, but is their convergence.
조용진(Yong-Jin Cho) 한국비파괴검사학회 2011 한국비파괴검사학회지 Vol.31 No.2
위상잠금 적외선 열화상(lock-in infrared thermography) 기법의 조선해양공학 분야에 적용 가능성을 검토하였다. 이를 위해 실험계획법에 의해 향상된 결함부와 건전부의 위상차 대비영상을 얻기 위한 탐색연구를 수행하였다. 위상차 대비영상의 평가를 정량화하기 위하여 대비 기준표와 홀 크기에 가중치를 주는 방법을 적용하여 유용한 판별기준임을 입증하였다. 그리고 표면에 광 조사 세기는 중간이나 낮은 조사량이 좋은 결과를 보여주고, 높은 조사는 유용한 결과를 주지 못했다. 위상잠금 주파수는 가진 광원의 세기에 비례하여 좋은 결과를 획득할 수 있었고, 열화상 카메라의 노출시간(integration time)은 조사 광원의 세기와 반비례하여 실험을 수행하는 것이 좋은 결과를 얻을 수 있었다. 그러나 시험편(specimen)의 차이는 약간의 편향된 결과를 얻었지만 유의하지는 못했다. This work is devoted to the technique application of lock-in infrared thermography in the shipbuilding and ocean engineering industry. For this purpose, an exploratory study to find the optimized test conditions is carried out by the design of experiments. It has been confirmed to be useful method that the phase contrast images were quantified by a reference image and weighted by defect hole size. Illuminated optical intensity of lower or medium strength give a good result for getting a phase contrast image. In order to get a good phase contrast image, lock-in frequency factors should be high in proportion to the illuminated optical intensity. The integration time of infrared camera should have been inversely proportional to the optical intensity. The other hand, the difference of specimen materials gave a slightly biased results not being discriminative reasoning.
함정 적외선신호 민감도 해석을 통한 기상변수 영향에 관한 연구
조용진(Yong-Jin Cho),정호석(Ho-Seok Jung) 한국해양공학회 2013 韓國海洋工學會誌 Vol.27 No.3
According to a study on improving ship survivability, an IR signature represents the contrast radiance intensity between the radiation signature from a ship and the background signature. It was found from applying stealth techniques to the process of ship development that the IR signature is remarkably sensitive and dependent on the environment. In this study, marine climate data for the sea near the Korean Peninsula were collected, and the marine meteorological environment in Korean waters was defined. Based on this data, a study on the sensitivity of the IR signature of target objects was performed using analytical methods. The results of the research indicated that clouds have important effects on the infrared signature, but the velocity of the wind and the humidity have only slight effects on the IR signature. In addition, the air and seawater temperatures had hardly any effect on the IR signature, but it is judged that additional study is needed.
조용진(Yong-Jin Cho) 한국해양공학회 2009 韓國海洋工學會誌 Vol.23 No.3
A scale model test for ship Infra-Red signature measurements at sea is impossible, because it is sensitive to the environment. Since we can't control the meteorological environment of the real sea, it can't be carried out with the desired maritime environments. Therefore, in the sea, we made measurements of the weather, operating conditions of the ship, and ship IR signatures under given conditions, and then analyzed them. Conversely, we compared the results of the test with a prediction for a given. scenario condition. This paper describes the test items, procedures, and measuring instruments of the experiments at sea and the results from basic researches for methods of estimation and analysis of the measured data.