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SEP를 이용한 헬기와 지상부대간의 전술데이터링크 체계 구현
정재형,권태환,권용수,Jeong, Jae-Hyeong,Gwon, Tae-Hwan,Gwon, Yong-Su 한국시스템엔지니어링협회 2004 시스템엔지니어링워크숍 Vol.4 No.-
The Tactical Data Link System(TDLS) is a standardized communication link to exchange and interface positional, situational information, command and control in real time. It has been evaluated that the link would play an important role for tactical interoperability, situation awareness, and execution of joint operations in the future war. This work presents how to embody the TDLS through the systems engineering approach on the base of TDLS operating concept analysis of helicopters-groud units.
정재형,Jeong, Jae-Hyeong 대한출판문화협회 1995 출판저널 Vol.175 No.-
최근의 영화관련서들은 더욱 확장된 미디어 측면에서의 관심, 문화이론 연구의 지적 호기심, 영화 자체의 깊이있는 계보학에 관한 탐구 등의 세 갈래로 분류해 볼 수 있다. 앞으로 영화문화의 방향성 있는 장기기획이 더욱 요구된다.
논술 학습 프로세스 리엔지니어링 - 비판적 사고와 논증구조화를 중심으로 : 논술 학습 프로세스 리엔지니어링
정재형(Jeong Jae-hyeong) 한국어문교육학회 2006 어문학교육 Vol.33 No.-
‘Writing’, one of expression educations, takes a position in the general writing educations. Based on the educational objective of writing subject for higher elementary students, this study adds a frame of educational technology to it. ‘Writing-Learning Process Reengineering’ is a strategy for efficient writing and writing expression education. ‘Writing-Learning Process Reengineering’ means the writing learning strategy that redesigns the existing incorrect habits or methods of writing learning and renovates them. Notice that here the process means a variety of procedures for a sort of problem-solving and includes a kind of ‘problem-discovering’and the structure of ‘problem-solving’. 〈Figure〉 The interlocking structure of Writing-Learning Process Reengineering Input process ⇒ Transformation process ⇒ Output process In this system for thought of writing-learning, there are criteria to enhance the effect of learning at each stage. First, the content for argument should be clear. Then, the frame of the argument should be also definite and its application should be valid. In this reengineering, a so-called ‘Action Debate Learning (ADL)’ is pursued. It is for solving actual problems in hand rather than the existing contents or theories of writing subject through discussions. That is, this process purposes that learners seek for reading materials that the points of their arguments are clear, controversial and appropriate to learner’s level and question about the arguments and ultimately have them solve and internalize the methods of problem-solving for themselves. In addition, it considers the education of logical understanding and expression in order for learners to write efficient writing. For these considerations, it is required that the features of logic be understood and logical relationships in contexts be learned with linking words. Besides this, ‘the structure of argument’ should be developed for problem-solving based on especially ‘main issue’ of the structure of ‘an introduction-main issue-conclusion’. Therefore, efficient problem-solving is attempted through a variety of supporting systems such as ‘teaching-based support’, ‘teaching-adaptation support’ and ‘recheck support’, etc.
이정환 ( Jeong Hwan Lee ),함세영 ( Se Yeong Hamm ),정재열 ( Jae Yeol Cheong ),정재형 ( Jae Hyeong Jeong ),박삼규 ( Ki Seok Kim ),김남훈 ( Nam Hoon Kim ),김규범 ( Gyoo Bum Kim ) 대한지질공학회 2010 지질공학 Vol.20 No.4
수치모델링은 지하굴착 지역의 지하수 유입량과 주변 지역의 지하수위 변화를 평가하기 위해서 수행하게 된다. 본 연구에서는 경기편마암복합체로 이루어진 경기도 용인시 기흥터널 지역의 터널 건설에 따른 지하수위 변동과 터널내 지하수유출량을 평가하였다. 이를 위하여 수리지질학적 및 지질학적 자료와 전기비저항 탐사 자료를 이용하였으며, 특히 기흥터널의 남부에 위치하는 주향이동단층이 터널 내 지하수 유입량에 미치는 영향을 고려하였다. 부정류 수치 모델링 결과 그라우팅 효율이 40%일 때, 지하수 유출량은 약 306 m3/day로 평가되었으며, 이때 관측된 지하수위 변동폭(6.30 m)과 계산된 지하수위 변동폭(6.20 m)은 서로 비슷하였다. We performed numerical simulations of the excavation of an underground structure (the Giheung Tunnel) in order to evaluate the rate of groundwater flow into the structure and to estimate the groundwater level around the structure. The tunnel was constructed in Precambrian bedrock in Gyeonggi Province, South Korea. Geological and electrical resistivity data, as well as hydraulic test data, were used for the numerical modeling. The modeling took into account the strike-slip faults that cross the southern part of Giheung Tunnel, as these structures influence the discharge of groundwater into the tunnel. The transient modeling estimated a groundwater flow rate into the tunnel of 306 m3/day, with a grout efficiency of 40%, yielding good agreement between the calculated change in groundwater level (6.20 m) and that observed (6.30 m) due to tunnel excavation.
이동형 스크러버를 이용한 암모니아 및 톨루엔의 제거 효율
김재영 ( Jae-young Kim ),김장윤 ( Jang-yoon Kim ),이연희 ( Yeon Hee Lee ),김민선 ( Min Sun Kim ),김민수 ( Min-su Kim ),김현지 ( Hyun Ji Kim ),류태인 ( Tae In Ryu ),정재형 ( Jae Hyeong Jeong ),황승율 ( Seung-ryul Hwang ),김균 ( Ky 한국환경농학회 2018 한국환경농학회지 Vol.37 No.1
BACKGROUND: The mobile vortex wet scrubber was developed to remove the harmful chemicals from accidental releases. However, there was a disadvantage that it was limitedly used for volatile organic compounds (VOCs) such as toluene according to the physicochemical properties. This study compared the removal efficiencies of an improved mobile scrubber on toluene and ammonia by applying diverse adsorption and absorption methods. METHODS AND RESULTS: The removal efficiencies on harmful chemicals were examined using various adsorption and absorption methods of water vortex process (C), phosphoric acid-impregnated activated carbon adsorption (PCA), pH-controlled water (pH 2.5) vortex process absorption with sulfuric acid (SWA) after ammonia exposure, granular activated carbon adsorption (GCA), and activated carbon mat adsorption (CMA) after toluene exposure. As a result, the best removal efficiency was shown in the SWA for ammonia and GCA for toluene. Also, the SWA and GCA methods were compared with different concentration levels. In the case of ammonia exposure (5, 10 and 25%), there was no difference by concentration levels, and the concentration in the outlet gradually increased, with pH change from acid to base. In the case of toluene exposure (50, 75 and 100%), the outlet concentration was higher relative to the exposure concentration in the initial 10 min, but the outlet concentration was remained steady after 10 min. CONCLUSION: The newly improved mobile scrubber was also effective in removing VOCs through adsorption techniques (activated carbon, activated carbon fiber, carbon mat filter etc.), as well as removing acid-base harmful chemicals by neutralization reaction.