http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
김지현(Jihyeon Kim),김효식(Hyo-Sik Kim),김진호(Jin-Ho Kim),류재홍(Jae-Hong Ryu) 한국에너지기후변화학회 2021 한국에너지기후변화학회 학술대회 Vol.2021 No.11
우리 삶에 있어 생활 편의성이 중요시되면서 포장용기나 일회용품 사용량이 급증함에 따라 폐플라스틱의 발생량이 매년 증가하고 있다. 이에 폐플라스틱을 처리할 수 있는 기술에 대한 관심도가 높아지고 있다. 폐플라스틱 처리 기술 중 하나인 열분해 공정을 통해 연료유로 사용 가능한 열분해유를 생산할 수 있다. 이러한 연료유를 사용할 수 있는 반응 장치 설계나 운전조건 선정을 위해 기초 특성에 대한 자료가 필요한 상황이다. 이에 열분해유를 포함하여 연료유에 속하는 바이오중유, 이온정제유의 연소 특성을 열중량 분석기로 분석하여 비교하였다. 연소 특성 분석은 25 ~ 945 ℃ 온도 범위 내에서 승온 조건 (5 ℃/분, 10 ℃/분, 20 ℃/분)에서 열중량 분석기로 연소 특성을 관찰하였다. 분석 결과는 여러 가지 속도론적 해석(Kissinger, Chatterjee-Conrad, Coats-Redfern, Freeman-Carroll) 방법을 사용하여 비교 해석하였다. 그 결과 연료유 종류에 따라 적합한 해석 방법을 구분 지을 수 있었다.
김지현(Jihyeon Kim),김진호(Jin-Ho Kim),김효식(Hyo-Sik Kim),류재홍(Jae-Hong Ryu),강석환(Suk-Hwan Kang),이예지(Ye-Jee Lee),이수출(Soo-Chool Lee) 한국에너지기후변화학회 2020 에너지기후변화학회지 Vol.15 No.2
Combustion characteristics of fuel oils such as bio heavy oil, pyrolysis oil, and ion refined oil were investigated to reserve basic data in terms of designing a reactor using fuel oil and selecting operating conditions. For the analysis of combustion characteristics, fuel oil was combusted with a thermogravimetric analyzer (TGA) under non-isothermal heating conditions (5 °C/min, 10 °C/min, 20 °C/min) in the air within the range of 25 °C to 945 °C. The activation energy and reaction order for fuel oil combustion have been kinetically interpreted using various methods such as the Kissinger, Chatterjee-Conrad, Coats-Redfern or Freeman-Carroll method. In this study, the activation energy of the three fuel oils was less than 50 kJ/mol, and Kissingers method with a reaction order of 1 showed an activation energy of less than 7.5. As a result, the activation energy and reaction order for the combustion characteristics of the three fuel oils were obtained for Freeman-Carrolls method among several interpretation methods. Through this, the Freeman-Carroll method was commonly applied according to the type of fuel oil (bio heavy oil, pyrolysis oil, ion refined oil), and the Kissinger method was limited to pyrolysis oil within a certain range. Through this study, it was possible to classify an appropriate analysis method according to the type of fuel oil.
김지현(Jihyeon Kim) 한국복식학회 2015 服飾 Vol.65 No.5
Protective clothing for riot policemen is a special clothing with a purpose of protecting body when putting down a riot. It is a protective clothing for Korean policemen and women in conducting their official duties. It should bee able to safely protect a person wearing it from external threats and symbolically represent the authority of police in management of riots or demonstrations. Functions required for protective clothing for policemen are safety, activity, body fitness in terms of functionality and comfort, convenience, design in terms of wearability. This study investigated and analyzed status of wear and degree of satisfaction on 6 functions of protective clothing of riot policemen, which are to be used as basic data for future development of protective clothing for riot policewomen. The study result shows that men have higher satisfaction in all functions of protective clothing, which indicates a need for development of protective clothing for riot policewomen. As for men``s satisfaction rate, it was in order of comfort <convenience < activity < safety < body fitness < design, suggesting a need for improvement in comfort. As for women``s satisfaction rate, it was activity < comfort < convenience < body fitness < design < safety, requesting an improvement in fit for active movements.
비서의 일 주도성 및 디지털 리터러시(Digital Literacy)와 무형식학습의 관계
김지현(Kim, Jihyeon),백지연(Paek, Jeeyon),이지연(Lee, Jiyon) 한국비서학회 2018 비서·사무경영연구 Vol.27 No.1
본 연구는 최근 비서직 채용공고를 통해 과거 대비 새로운 요구 역량으로 등장한 일 주도성3과 디지털 리터러시(Digital Literacy)가 무형식학습에 미치는 영향력을 규명하고자 하였다. 이를 위해 본 연구는 국내 현직 비서 214명을 대상으로 설문조사를 실시하였고 이 때 표본추출에 특별한 제한을 두지 않았다. 수집된 데이터를 토대로 회귀분석을 실시한 결과, 비서의 일 주도성은 무형식학습 활동과 결과 모두에 유의미한 정(+)의 관계를 보였다. 반면, 디지털 리터러시(Digital Literacy)는 디지털 및 스마트 기기를 활용하여 정보를 검색하고, 검색한 정보의 유용성과 신빙성을 판별하여 업무에 필요한 형태로 재창조하는 능력인 ‘디지털 리터러시Ⅰ’과 SNS를 통한 정보와 지식의 공유를 위한 의사소통 능력인 ‘디지털 리터러시 Ⅱ’로 나뉘어져 각각 다른 영향력을 나타냈다. ‘디지털 리터러시 Ⅰ’은 조직 내 무형식학습 활동에, ‘디지털 리터러시 Ⅱ’는 조직 외 무형식학습 활동에 유의미한 정(+)의 관계를 보였으며, 무형식학습 결과에 있어 ‘디지털 리터러시 Ⅰ’은 정(+)의 유의미한 관계를 보였으나, ‘디지털 리터러시 Ⅱ’는 유의미한 영향관계가 보이지 않았다. 본 연구 결과는 비서직에 새롭게 요구되는 역량인 일 주도성과 디지털 리터러시(Digital Literacy)가 무형식학습에 미치는 영향력을 확인함으로써 비서직 채용과 교육의 기초자료로 활용될 수 있을 것이다. The aims of this study is to examine the effect of the secretary"s personal initiative and digital literacy on informal learning activities and results, which have newly emerged as required qualifications by recent job postings in Korea, In this study, a survey of 214 incumbent secretaries in Korea was conducted. According to the regression analysis, the secretary"s personal initiative has a positive effect both on the informal learning activities and the results. However, digital literacy was divided into two components and the study found that each has a different influence on the informal learning. First, "Digital literacy Ⅰ", which describes the ability to use digital and smart devices, had a positive effect on the informal learning activities in the organizations and outcomes of informal learning. Second, "Digital literacy Ⅱ", which reflects the communication skill through SNS to share information and knowledge, indicated a positive effect on the informal learning activities from external organizations, but there is no effect on the informal learning results. This study indicates that the effect of the secretary"s personal initiative and digital literacy on informal learning may have a positive impact on educating qualified secretaries.
김지현(Jihyeon Kim),김진호(Jin-Ho Kim),김효식(Hyo Sik Kim),류재홍(Jae-Hong Ryu),강석환(Suk-Hwan Kang),정석용(Suk-Yong Jung),이수출(Soo-Chool Lee) 한국에너지기후변화학회 2021 에너지기후변화학회지 Vol.16 No.1
Environmental problems such as climate change, ecosystem disturbance, and ocean acidification are becoming serious because carbon dioxide(CO₂) emissions continue to increase. For this reason, many technologies for CO₂ recycling and carbon neutrality are being studied to convert CO₂ into usable materials in chemical process, and they correspond CCUS (Carbon dioxide Capture Utilization & Storage) technologies. Among the CCUS researches, RWGS(Reverse Water Gas Shift) reaction, CO₂ + H₂ → CO + H₂O, can utilize more carbon dioxide as reaction material than the other CCU methods and synthesize an intermediate of a chemical process without fossil fuels. Accordingly, the thermodynamic equilibrium, reaction mechanism, and recent catalytic research results(metal, supported metal oxide, perovskite) for the RWGS reaction are summarized in this paper. It also mentions a chemical looping process for more efficient RWGS reaction and compares it with the general RWGS reaction. The solutions necessary for technical stabilization of the chemical looping process were mentioned.