기술초대석 I - IFC를 이용한 기본설계단계 철근배근의 표현

정종현,김치경,김지현,Jeong, Jong-Hyeon,Kim, Chi-Gyeong,Kim, Ji-Hyeon 한국건축구조기술사회 2012 건축구조 Vol.19 No.4

In recent years, BIM has been applied to many building projects. However, IFC, which is the core technology of data exchange in BIM, has not been used widely. In particular, IFC has almost never been used to represent rebars in RC structures. This is because the lack of understanding and utilization strategy for data model of IFC on rebars. The purpose of this study is to store and manage the data on rebars using IFC at the schematic design stage. For this, we investigated the data to represent rebars for RC members, such as beam, column, wall, and slab at the schematic design stage. And, we analyzed the data model of IFC on rebars at the schematic design stage. Based on these investigation and analysis on data, we proposed the strategy for utilization of the data model of IFC on rebars. Finally, for verification, we generated a sample IFC file to represent the rebars of a simple RC structure according to the proposed strategy and imported the sample IFC file into the software, which we developed for this study. Based on the results of the import, we concluded that the data on rebars can be stored and managed using the proposed strategy for utilization of the data model of IFC on rebars.

IFC를 이용한 구조해석 자료의 교환

정종현,Jeong, Jong-Hyeon 한국전산구조공학회 2009 전산구조공학 Vol.22 No.3

신남철과 ‘대학’ 제도의 안과 밖

정종현(Jeong Jong Hyeon) 동악어문학회 2010 동악어문학 Vol.54 No.-

경성제국대학 법문학부 철학과 제3회 졸업생 신남철은 근대 한국의 ‘지식제도’의 전개를 개인 차원에서 보여주는 하나의 기호이다. 그는 경성제국대학 철학과를 졸업한 이후 동(同) 대학의 조수, 동아일보 기자 등을 거치면서 식민지 조선의 학술과 저널리즘에서 활동하다가 해방 직후에는 서울대학교 교수로 재직 중 ‘국립서울대안’에 반대하여 월북, 김일성종합대학의 교수를 역임하였다. 그의 이력은 〈식민지-해방기-분단기〉를 횡단하는 한국 지식제도의 연속/비연속의 축도이다. 신남철의 정체성을 규정할 수 있는 핵심적인 키워드는 경성제국대학이라는 제도와 마르크스주의로 표상되는 서구철학이다. 경성제국대학 출신 조선인 엘리트들은 학술어로서의 일본어에 의해 주변화된 ‘조선어’ 학술을 통해서 지식의 독립을 추구하고, 동시에 ‘제국대학’이라는 제국의 아카데미즘의 제도를 근거로 조선인의 민간 학술과 자신들을 구별하는 이율배반의 정체성을 형성했다. 신남철이 편집에 관여했던 경성제국대학 출신들의 학술 동인지 新興은 그러한 정체성이 반영된 사례이다. 경성제국대학 출신들과 일본 및 구미에서 유학한 철학 엘리트들의 모임인 ‘철학연구회’(1932) 동인으로 참여하고, 백남운 주도의 ‘중앙 아카데미’ 수립에 동참한 신남철의 행보는 대학 제도 안으로 진입이 허용되지 않았던 식민지인이 대학의 밖에서 구성하고자 했던 식민지적 아카데미즘의 한 양상을 보여주는것이다. 1934년을 전후하여 등장한 ‘조선학 운동’에 대응하여 신남철이 주장한 ‘과학적 조선연구’는 경성제국대학과 마르크시즘에 근간한 신남철의 정체성과 상응하고 있다. 신남철이 주장한 ‘과학적 조선연구’의 방법과 내용에는 조선어 학술을 통해 조선에 관한 지식을 생산하는 ‘지식’의 독립, 아카데미즘에 근거한 과학성, 마르크스주의가 종합되어 있다. 해방은 마르크스주의자로서의 신남철의 정체성을 더욱 구체화한 계기였다. 해방 이후 신남철은 서울대 교수로 재직하며 대학 내부에서 ‘국립서울대안’ 반대 투쟁을 수행하였다. ‘국립서울대안’이 포고된 이후 신남철은 이 설립안의 비현실성, 강압적 추진, 교수회 및 학생의 자치권을 인정하지 않는 비민주성 등을 이유로 ‘국대안’을 반대하면서 교육 부문을 탈식민적 민족교육으로 재구성할 것을 주장한다. ‘국대안’ 반대 운동과 더불어 식민지 시기 중앙 아카데미 구상을 계승한 ‘조선학술원’ 설립운동을 주도하지만 건국을 둘러싼 제정파의 갈등과 분열에 의해 무산되면서 월북하게 된다. 월북 이후 신남철은 김일성종합대학 교수 등을 역임하며 북한 아카데미즘의 중추로 활동하였지만, 현재 저술은 많이 남아 있지 않다. 1950년대에 남긴 신남철의 글을 통해서 미국 헤게모니하에 재편되고 있는 남한의 사상계와 대중문화 등을 ‘미제국주의’에 의한 말초적 문화의 확산으로 비판하는 사회주의자의 인식을 엿볼 수 있다. Nam-cheol Shin, one of 3rd alumni from the Department of Law and Literature, Keijo Imperial University (京城帝國大學; a former branch of Seoul National University), has been known as a personal symbol that demonstrates development of modern Korean ‘knowledge system.’ After graduating from Department of Philosophy as well in same university, he engaged in academic activities and journalism in colonial days of modern Korea under the rule of Imperial Japan with the help of his social careers including collegiate assistant (Keijo Imperial Univ) and journalist (Dong-A Ilbo Daily). Just after the National Liberation of Korea in 1945, he stood against ‘a Proposal for the Nationalized Administration of Seoul University’ when he held a professorial post in Seoul University as successor of Keijo Imperial University. Then, he went to North Korea and held a professorial post in Kim Il-sung University. His social careers are viewed as an epitome for continuity / discontinuity of modern Korean knowledge system ranging from colonial period via liberation period toward national division period. Both Keijo Imperial University (educational system) and Marxism (Western philosophy) are major keywords to define the original identity of Shin. Modern Korean elites who graduated from Keijo Imperial University pursued independence of national knowledge through ‘such academic efforts in Korean language’ as marginalized by academic Japanese language, but created their antimonic identity with a tendency to differentiate their academic achievements from Korean private collegiate ones, on the basis of imperial academic system symbolized by ‘Keijo Imperial University.’ A reflection of their antimonic identity is exemplified by “Shinheung (新興),” an academic coterie magazine for graduate intellects from Keijo Imperial University, where Shin engaged in editing works. Moreover, he engaged as a member of ‘Korean Philosophy Society’ (1932), a coterie society of Keijo Imperial University alumni and modern Korean philosophical elites who completed overseas academic courses in Japan and Western countries. Shin's engagement in the establishment of Central Academy initiated by Nam-un Baek reveals a sort of colonial academism pursued by colonial elites outside the wall of campus because of their access denied to any collegial system under the rule of imperial Japan. In a response to ‘Korean studies movements’ emerging around 1934, Shin advocated ‘scientific Korean studies’ which correspond to his own identity based on Keijo Imperial University and Marxism. The methodology and content of ‘scientific Korean studies’ advocated by Shin sums up independence of ‘knowledge’ to produce knowledge about Korea through academic literatures in Korean language; scientific approaches based on academism; and Marxism. The National Liberation of Korea in 1945 became a good chance for Shin to further develop his own identity as Marxist. After the Liberation, Shin held a professorial post in Seoul University and initiated an intramural campaign against ‘a Proposal for the Nationalized Administration of Seoul University.’ After the proclamation of said Proposal, Shin opposed it because of its infeasibility, coercive promotion and authorities' undemocratic decision without respect of autonomy vested in faculty and students. And he claimed for restructuring his contemporary Korean education sector toward post-colonial national education system. In parallel with ‘anti-nationalization’ campaign, he led another campaign for the establishment of ‘Korean Academy Society’ in succession to a former plan for Central Academy during the era of colonized Korea. But Shin decided to go to North Korea due to failure of those campaigns under the influence of conflicts and disunion in Constitutional faction before the founding of modern Korean government. Then, Shin kept holding a professorial post in Kim Il-sung University and played as a pivotal role in the modern academism of North Korea, but there are re

탈식민지 시기(1945~1950) 삼팔선 표상의 지정학적 상상력 -해방 후 이태준 소설을 중심으로

정종현 ( Jong Hyeon Jeong ) 한국문학연구학회 2009 현대문학의 연구 Vol.0 No.39

국내산 석회석을 이용한 배연탈황/탈질 흡수제 및 반응특성

정종현(Jeong Jong Hyeon),유경선(Yu Gyeong Seon),손병현(Son Byeong Hyeon),이재정(Lee Jae Jeong),이형근(Lee Hyeong Geun),오광중(O Gwang Jung) 大韓環境工學會 2003 대한환경공학회지 Vol.25 No.9

압하력, 장력에 따른 조질 압연에서의 소재 변형률 예측에 관한 연구

정종현(Jong Hyeon Jeong),고성현(Seong Hyun Ko),김미정(Mi-Jeong Kim),황운봉(Woon Bong Hwang),박현철(Hyun Chul Park) 대한기계학회 2020 大韓機械學會論文集A Vol.44 No.4

조질 압연은 소재의 잔류 응력 및 표면 평탄도 등의 제품 문제를 해결하기 위한 하나의 중요한 공정이다. 유한요소 해석을 기반으로 하는 기존의 연구들은 하나의 스탠드에서의 압연 상황만을 고려하였으며, 소재에 작용하는 장력에 의한 영향에 관하여 수행되지 않았다. 이에 본 연구에서는 2D 유한요소 모델을 통하여 압하력과 장력이 소재 압하에 어떠한 영향을 미치는지에 관한 분석을 수행하였으며, 임의의 해석 조건을 통하여 분석 결과를 검증하였다. 또한 3D 해석 모델을 통하여 소재 폭 방향에 대하여 압연 시 소재가 어떻게 변형하는지에 관한 분석을 수행하였다. Skin pass rolling is an important process to resolve product problems such as strip wave or residual stress. Previous research based on finite element method (FEM) has only considered one stand without the effects of back tension. In this study, the relationships between roll force, back tension, and strain of the workpiece are proposed, and they are verified using randomly selected FEM conditions based on a 2D FEM model composed of two stands and a tension reel. Simulation based on a 3D FEM model is also performed to account for the width directional strain, and the reliability is verified by comparing these results to those of the 2D model.

실시간 유해대기 측정차량을 이용한 악취 추적 기법 연구

정종현(Jong Hyeon Jeong),김익산(Ik San Kim),오은하(Eun Ha Oh),이재령(Jae Ryeong Lee),김효성(Hyo Seong Kim) 대한환경공학회 2021 대한환경공학회 학술발표논문집 Vol.2021 No.11

동아프리카 우간다 고추 밭에서 발생하는 잡초

정종현(Jeong Jong Hyeon),이주원(Lee Joo Won),우한희(Woo Han Hee),박태선(Park Tae Seon) 한국잡초학회 2019 한국잡초학회 별책(학술대회 초록집) Vol.39 No.2

대구 안심연료단지 환경오염물질 노출 평가(3) -원소 탄소, 결정형 실리카 및 안정동위원소비를 이용한 오염원 기여율 및 분포특성-

정종현 ( Jong Hyeon Jung ),피영규 ( Young Gyu Phee ),손병현 ( Byung Hyun Shon ),배혜정 ( Hye Jeong Bae ),양원호 ( Won Ho Yang ),김지영 ( Ji Young Kim ),김근배 ( Geun Bae Kim ),최종우 ( Jong Woo Choi ),박성준 ( Sung Jun Park ),이 한국산업보건학회 2015 한국산업보건학회지 Vol.25 No.3

Objectives: This study measured and analyzed the concentrations of crystalline silica, elemental carbon and the contribution ratio of pollutants which influence environmental and respiratory disease around the Ansim Briquette Fuel Complex in Daegu, Korea. Methods: We analyzed the crystalline silica and elemental carbon in the air according to FTIR(Fourier Transform Infrared Spectroscopy) and NIOSH(National Institute of Occupation Safety and Health) method 5040, respectively. In addition, lead stable isotopes, and carbon and nitrogen stable isotopes were analyzed using MC-ICP/MS(Multi Collector-Inductively Coupled Plasma/Mass Spectrometer), and IRMS(Isotope Ratio Mass Spectrometer), respectively. Results: The concentration of crystalline silica in the direct exposure area around the Ansim Briquette Fuel Complex was found to be 0.0014±0.0005 ㎎/S㎥, but not to exceed the exposure standards of the ACGIH(American Conference of Governmental Industrial Hygienists). In the case of the autumn, the direct exposure area was found to show a level 2.5 times higher than the reference area, and on the whole, the direct exposure area was found to have a level 1.4 times higher than the reference area. The concentration of elemental carbon in the direct exposure area and in the reference area were found to be 0.0014±0.0006 ㎎/S㎥, and 0.0006±0.0003 ㎎/S㎥, respectively. This study confirmed the contribution ratio of coal raw materials to residentially deposited dusts in the area within 500 meters from the Ansim Briquette Fuel Complex and the surrounding area with a stable isotope ratio of 24.0%(0.7-62.7%) on average in the case of carbon and nitrogen, and 33.9%(26.6-54.1%) on average in the case of lead stable isotopes. Conclusions: This study was able to confirm correlations with coal raw materials used by the Ansim Briquette Fuel Complex and the surrounding area. The concentration of some pollutants, crystalline silica, and elemental carbon emitted to the direct-influence area around the Ansim Briquette Fuel Complex were relatively higher than in the reference area. Therefore, we need to impose continuous and substantive reduction countermeasures in the future to prevent particulate matter and coal raw materials in the study area. It is time for the local government and authorities to prepare active administrative methods such as the relocation of Ansim Briquette Fuel Complex.

포항철강공단 미세먼지(PM₁₀)의 입경분포 및 화학적 특성

정종현(Jung, Jong-Hyeon),이형돈(Lee, Hyung-Don),전수빈(Jeon, Soo-Bin),유정근(Yoo, Jeong-Kun),손병현(Shon Byung-Hyun) 한국산학기술학회 2012 한국산학기술학회논문지 Vol.13 No.11

본 논문은 포항철강공단 및 주변지역의 보건 및 환경영향 인자를 확인하기 위하여 미세먼지(PM₁₀) 농도와 성분을 측정 및 분석하였다. 또한 지역대기자동측정망 자료를 이용하여 연별, 계절별 PM₁₀ 농도분포를 조사하였다. 공단지역 내 PM₁₀을 측정한 결과, 동일산업에서 측정된 PM₁₀ 평균농도는 61.3±12.1 ㎍/㎥, 철강공단관리사무소에서 측정된 PM₁₀ 평균 농도는 44.3±8.1 ㎍/㎥으로 나타나 대기환경기준을 만족하였다. 공단지역 동일산업과 철강공단관리사무소에서 측정된 PM10 중 이차생성 이온인 SO₄^2-, NO₃^-, NH₄⁺의 분율을 확인한 결과, SO₄^2-의 분율이 높게 나타났고, 황산염과 관련된 오염 원이 철강공단지역에 존재하는 것으로 판단된다. 전체적으로 동일산업 지점에서는 SO₄^2- > Cl^- > NO₃^- > F^- > NH₄⁺ 순으로 나타났고, 철강공단관리사무소 지점에서는 SO₄^2- > Cl^- > NO₃^- > NH₄⁺ > F^- 순으로 나타났다. The fine particulate matter(PM₁₀) concentrations and contents were measured to check the health and environment influential factors in Pohang Iron and Steel Industrial Complex and its vicinities. In addition, the PM₁₀ distribution for each year and season was surveyed using the regional air quality monitoring stations. The measuring on the PM₁₀ inside the industrial complex showed 61.3±12.1 ㎍/㎥ for average concentration of PM₁₀ which was measured by Dongil Industry and 44.3±8.1 ㎍/㎥ measured by steel manufacturing industry complex management office. Both of them satisfied the environmental air quality standard. The percentage of SO₄^2-, NO₃^-, NH₄⁺