티오시안산 염에 의한 염화벤질의 치환반응에 미치는 상이동 촉매효과

장승현,윤무홍,김창수,정광보,심재후,Seung Hyun Chang,Mu Hong Yoon,Chang Su Kim,Kwang Bo Chung,Jae Hu Shim 대한화학회 1989 대한화학회지 Vol.33 No.6

액-액 불균일계에서 염화벤질의 KSCN에 의한 친핵치환반응에 미치는 상이동 촉매 효능을 검토하였다. 반응은 염화벤질의 농도에 의존하는 유사일차 반응이었고, 반응속도 상수$(k_{obsd})$는 촉매농도에 비례하였으며, 반응온도 및 용매 등에 영향을 받았다. 본 치환반응에 대한 상이동 촉매능의 순위는 $NH_4Cl$ < BTMAC < 18-crown-6 < BTEAC < PEG < TBAC < CTMAB 이었다. 반응의 활성화 엔탈피 및 엔트로피는 각각 15∼20 Kcal${\cdot}mo^{l-1}$, -12∼-29 eu.이었으며, 반응은 미세한 유탁액으로 이루어지는 중간상인 interphase에서 일어남을 알 수 있었다. The catalytic effects of several phase-transfer catalysts (PTC) on the liquid-liquid heterogeneous nucleophilic displacement reaction of thiocyanate on benzyl chloride have been determined. Reactions followed a pseudo-first order dependency on the benzyl chloride concentration and the observed rate constant $(k_{obsd})$ were linearly related to the concentration of catalyst and varied with variables such as reaction temperature and solvent. The sequences of catalytic activity of the displacement were $NH_4Cl$ < BTMAC < 18-crown-6 < BTEAC < PEG < TBAC < CTMAB. Enthalpies and entropies of activation associated with the displacement were 15∼20 Kcal$mo^{l-1}$, -12∼-29 eu. respectively and the reaction occurs in the interphase comprising of microemulsion.

수영만 요트경기장 재개발 사업에 대한 비판적 검토

장승현,임새미 한국체육정책학회 2018 한국체육정책학회지 Vol.16 No.3

The purpose of this study is to review entire project of redeveloping Suyeong Bay Yacht Stadium, helps to solve potential problems which may occur related to its business and determine directions. Furthermore, it is to provide a clue to solve several problems of developing marina harbor. In order to achieve such purposes above, this paper tried documentary analysis and interviews. As a result, the contents of the redevelopment project of Suyeong Bay Yacht Stadium were reviewed in chronological order. Second, the problems raised in the course of the project such as 'potential privilege', 'modified design focusing on profitable facilities' Construction of hotels that conflicts School Health Law. Third, fundamental problems and suggestions that redevelopment project of Suyeong Bay Yacht Stadium left to us were discussed.

피트니스클럽 공간의 생산: 일상적 공간으로서 실천, 재현, 전유

장승현,이근모 한국스포츠사회학회 2014 한국스포츠사회학회지 Vol.27 No.1

This study aims to examine the production of space in fitness club of Korean society. In order to achieve such goal, nine research participants were selected; participation observation and in-depth interview were performed, and the results were derived with theoretical frame from production of space theory by Lefebvre. The results were as follows: first, spatial practice of fitness club is in place as a space of popularization and habituation; second, a representation of space of fitness club is in place in form of capitalistic commercialization strategy; and third, production of space is in place in fitness club as a space of representation. In more detail, fitness clubs’ popularization and routinization: spatial practice is the practice to make ‘a splendid body’ and check and maintain ‘health’ and also pour efforts not to get sick. Fitness clubs’ capitalistic commercialization strategies: reproduction of space is drawn as ‘space to secure health’, ‘space that can change life’, and ‘space of practice for the sophisticated lifestyle’. Fitness club space’s production: space of reproduction is drawn as ‘introspective space to build self-identity’ and ‘the resting place as a private zone’. In conclusion, Fitness club was the entire space under the control of capitalist cultural style as well as the culture product. On the other hand, It was definitely the space that overthrows existing concept and order and also the space where ‘production of space’ was certainly realized by some people showing creative behavior. 본 연구는 한국사회 피트니스클럽 공간의 생산을 살펴보고자 하였다. 이를 위해 피트니스클럽과 9명의 연구참여자를 연구환경, 연구참여자로 정하고 참여관찰과 심층면담을 실시하였으며, 르페브르의 공간생산이론을 이론적 틀로 결과를 도출하였다. 그 결과, 첫째, 피트니스클럽은 대중화와 일상화의 공간으로 공간적 실천이 이루어지고 있었으며, 둘째, 피트니스클럽의 자본주의적 상품화 전략의 형태를 통해 공간의 재현이 이루어지고 있었다, 셋째, 피트니스클럽은 재현의 공간으로서 공간의 생산이 이루어지고 있었다. 보다 자세히 말해, ‘멋진 몸’을 만들고, ‘건강’을 확인유지하며, 질병을 멀리하기 위해 노력하는 공간적 실천을 확인할 수 있었으며, ‘건강이 담보되는 공간’, ‘삶을 변화시킬 수 있는 공간’, ‘세련된 라이프스타일의 실천 공간’의 공간의 재현을 확인할 수 있었다. 또한 ‘사적영역으로서 휴식처’, ‘자아 정체성 형성을 위한 성찰적 공간’의 재현의 공간을 확인할 수 있었다. 결국, 피트니스클럽은 전적으로 자본주의적 문화양식에 지배를 받는 공간이자 그러한 문화의 산물이었지만 기존의 개념과 질서를 전복시키고 창조적 행위를 보이는 일부사람들에 의해 분명 ‘공간의 생산’이 이루어지고 있었던 것이다.

미래 이동통신을 위한 밀리미터파와 테라헤르츠파 대역 회로 및 시스템 기술 동향

장승현,공선우,이희동,박지훈,김광선,이광천 한국전자통신연구원 2018 전자통신동향분석 Vol.33 No.5

One of the most remarkable aspects of the recently completed 3GPP release-15 (5G new radio phase 1) is the fact that some millimeter-wave bands have been officially approved for 5G mobile communications. Because the demand for higher transmission capacity has only grown, other millimeter-wave or even higher-frequency terahertz-wave bands have attracted more attention over time. Based on this effort, this paper reviews and discusses the existing technologies and their trends in high-frequency circuits and systems at the millimeter and terahertz-wave bands, particularly for future mobile communications.

새로운 비스 벤조 크라운 에케르의 합성(VI) /

장승현 大邱大學校 基礎科學硏究所, 2003 基礎科學硏究 Vol.20 No.1

Special Report - 5G 핵심 부품 개발 동향

장승현,김명돈,Jang, Seung-Hyeon,Kim, Myeong-Don 한국정보통신기술협회 2018 TTA저널 Vol.2018 No.-

Slag를 위주로 한 Glass-Ceramics 의 물리적 성질에 관한 연구

장승현,정형진 한국세라믹학회 1980 한국세라믹학회지 Vol.17 No.1

The synthesis of glass-ceramic materials from glasses based on industrial wastes or natural rocks their physical properties were studied. Glasses of composition, CaO14.7∼16.1, MgO7.4∼9.0, Al2O38.3∼19.3, SiO2 48.9∼51.0wt% were prepared from domestic blast furnace slag, serpentine, sea sand and etc. with additions of chromic oxide, and fluoride as nucleating agent. The glasses were subjected to controlled heat treatments and yielded fine microstructure of glass-ceramics which were composed of monocrystalline phase of aluminous diopside. X-ray diffraction techniques were adopted to identify the crystalline phases and to determine the degree of crystallization quantitatively. Density, coefficient of thermal expansion, young's modulus, microhardness and modulus of rupture were measured and the resulting properties were discussed in terms of the heat-treatment conditions, the degree of crystallization, species of crystaline phase, the microstructures formed in glass-cramics and the chemical compositions of mother glasses.

영화<킹콩을 들다>로 재현된 한국엘리트스포츠의 현실고찰

장승현,이근모 한국스포츠사회학회 2013 한국스포츠사회학회지 Vol.26 No.1

This study aims to examine various aspects which sports in this contemporary society have with the movie of <Lifting King Kong> centering around weight lifting, one of the unpopular events. This researcher conducted textual analysis with the viewpoint of critical theory. The aspects of Korean elite sports shown in the movie of <Lifting King Kong> are about athletes suffering and moaning at school and society. The character named “Ji Bong” living with difficulty after retiring from injury shows the aspects of Korean athletes who believe sports can be the only way for living without any security for the right of learning. In particular, the athletes of unpopular events like weight lifting cannot even manage to live properly after retirement unless they become the best in their field. Ji Bong shows it very clearly. And also, we can see the aspects of authoritative coaches of this time with the character named “Sang Hwan”. This movie well shows the violence still existing in Korean sports from Sang Hwan. Lastly, we can also see the athletes regarded as some kind of tool. Ji Bong winning a bronze medal and expressing sorrow in contradistinction to rhe winner and Sang Hwan giving painkiller to sick Young Ja show the winner-oriented and victory-oriented aspects of Korean elite sports. 본 연구는 비인기 종목인 역도를 중심으로 전개되는 영화 <킹콩을 들다>를 통해 현시대의 스포츠가 가지는 여러 가지 모습들을 살펴보고자 하였다. 연구자는 비판이론(critical theory)의 관점에서 텍스트분석(textual analysis)을 실시하였다. 영화 <킹콩을 들다>가 보여주었던 한국 스포츠의 모습은 사회와 학교에서 아파하고 신음하는 운동선수의 모습이었다. 부상으로 은퇴하고 힘들게 살아가는 지봉의 모습은 학습권을 보장받지 못하고 운동만이 살길이라고 믿어왔던 영락없는 대한민국 운동선수의 모습이었다. 특히, 역도와 같은 비인기종목의 선수들은 최고가 되지 못한다면 은퇴 후 먹고 살기조차 힘든 것이 현실이다. 지봉은 그것을 잘 보여주고 있었다. 그리고 상환을 통해 우리는 이 시대 권위주의적 코치를 볼 수 있었다. 영화는 아직까지 한국스포츠에 잔존하는 폭력의 모습을 상환을 통해 잘 보여주고 있었다. 마지막으로 도구화 되어버린 운동선수를 볼 수 있었다. 지봉의 동메달, 그리고 승자와 철저히 대립되는 처절한 모습, 아픈 영자에게 진통제를 건네는 상환의 모습은 대한민국 스포츠의 최고주의와 승리지상주의를 보여주었다.

축구황제 펠레를 추억한다

장승현 한국스포츠정책과학원 2023 스포츠과학 Vol.162 No.-

예산의 편성과 통제를 위한 활동기준 원가산정(ABC) 방법의 도입연구

장승현 한국의정연구회 2010 연구보고서 Vol.2010 No.10