http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
박용효 ( Yong Hyo Park ),이상범 ( Sang Bum Lee ) 한국건축시공학회 2008 한국건축시공학회 학술발표대회 논문집 Vol.8 No.2
Recently, The high Air-Tightness and high heat insulation for building construction cause a ventilation air volume deficiency. Also, Worldwide high energy price is strongly urging to economize the air conditioning energy. Therefore Heat Recovery Ventilation is used for the satisfaction of ventilation air volume and building energy saving. Accordingly, this study dose the heat exchanger performance evaluation and economic efficiency evaluation of Heat Recovery Ventilation. And, we wish to make a basic study about HRV System application of HVAC System and Multi System Air-conditioning.
Pseudomonas fluorescens JK-0412의 키틴 분해 효소 및 단백질 분해효소 생산 최적화
박용일 ( Yong Il Park ),서현효 ( Hyun Hyo Suh ),김우중 ( Woo Jung Kim ),고주희 ( Ju Hee Ko ),박제권 ( Jae Kweon Park ) 한국키틴키토산학회 2010 한국키틴키토산학회지 Vol.15 No.4
Pseudomonas fluorescens JK-0412가 생산하는 키틴 분해 효소와 단백질 분해효소의 생산성을 다양한 기질을 이용하여 실험조사 하였다. 각각 키틴 분해효소와 단백질 분해효소 (CTNase와 PRTase로서 명명)의 생산에 여러 가지 기질의 특이성을 검토하였다. 전자는 주로, pNP-GlcNAc에 기질 특이성을 보이는 CTNase, 그리고, 후자는 skim-milk에 기질특이 성을 갖는 PRTase로서 두 효소의 최적 생산 조건은 각각 pH8.0와 37℃였으며, 또한 1.0% dextran, 1.0% yeast extract, 1.0% MgSO4를 각각 carbon, nitrogen, and mineral 원으로서 이용했을 때, CTNase의 최대 생산성을 얻을 수 있었다. 또한 각각, 1.0% glucose, 1.0% ammonium sulfate, 1.0% MgSO4를 carbon, nitrogen, 및 mineral 원으로서 이용했을 때, PRTase의 최대 생산성을 얻을 수 있었다. 특히, 유일한 carbon과 nitrogen 원으로 chitin powder, chitosan, colloidal chitin 과 dextran을 기질로 이용하여 12일 동안 배양하여 효소활성을 측정한 결과, CTNase 생산에 있어 기질로 powder chitin를 사용하였을 경우 3일 이후 효소활성이 확인되었으며, PRTase 활성이 측정되기 시작한 4일 이후의 PRTase 생산에 있어서도 powder chitin이 가장 적합한 기질로 확인되었다. 따라서 상업적으로 적용할 수 있는 chitin은 수산가공 부산물로부터 얻을 수 있을 수 생물소재로서 CTNase와 PRTase 생산을 위한 생물 공학적인 공정에 이용가치가 매우 높다. The production of chitinolytic and proteolytic enzymes in submerged cultures of Pseudomonas fluorescens JK-0412 in media was investigated in experiment with pH, temperature and substrate concentration as the main parameters. The production of chitinolytic and proteolytic enzymes, named as CTNase and PRTase, the former has specific enzyme activity toward pNPGlcNAc mostly and the latter has specific enzyme activity toward skim-milk, was monitored under the influence at various concentrations of these substrates. The optimum conditions of pH, temperature and substrate concentration for the production of both enzymes was determined to be pH 8.0 and 37 o C, and pH 8.0 and 45 o C, respectively. The maximum production of CTNase was obtained when 1.0% dextran, 1.0% yeast extract and 1.0% MgSO4 were used as carbon, nitrogen and mineral sources in the absence of chitinous material. In addition, the maximum production of PRTase was obtained when 1.0% glucose, 1.0% ammonium sulfate, and 1.0% MgSO4 were used as carbon, nitrogen and mineral source, respectively. Furthermore, in the presence of flake chitin, chitosan, and colloidal chitin used as a sole carbon and nitrogen source, it was found that flake chitin was the most efficient elicitor of CTNase and PRTase after 3 and 4 day cultivation, respectively. Hence chitin powder is a suitable substrate for the production of both CTNase and PRTase to employ in an advanced biotechnological process, whereby several commercially applicable chitinous materials can be obtained from a waste product of the fishing industry.
배기열회수 알루미늄 열교환기의 공조시스템 적용에 관한 연구
박용효(Yong-Hyo Park),김동규(Dong-Gyu Kim),김근오(Geun-Oh Kim),정용환(Yong-Hwan Jung),금종수(Jong-Soo Kum),정석권(Seok-Kwon Jeong) 대한설비공학회 2009 대한설비공학회 학술발표대회논문집 Vol.2009 No.-
The purpose of this study is to introduce wasted heat recovery heat exchanger for different kind of material in HVAC systems in field. For the purpose of estimating the large volume rotary heat exchanger and cross flow plate heat exchanger in heat recovery ventilator.
『KICE 영어 쓰기 수행평가 지원 프로그램』의현장 적합성 연구: 교사 및 학생 인식 중심으로
박용효 ( Yong Hyo Park ),민호기 ( Ho Ky Min ),김준식 ( Jun Shik Kim ),김연희 ( Youn Hee Kim ) 글로벌영어교육학회(구 호남영어교육학회) 2015 Studies in English education Vol.20 No.3
It has been consistently pointed out that teachers are reluctant to teach and assess English writing skills due to their lack of expertise in item writing and rating. The absence of user-friendly computer software with item writing and rating functions also makes the implementation of writing performance assessments difficult. In response to this need for computer software that can help teachers teach and assess English writing skills, the Korea Institute for Curriculum and Evaluation developed the KICE Writing Assessment Software for High schools (WASH). This study examined the effectiveness of the program focusing on the aspects of instruction, assessment, and functions of the program using in-depth teacher and student interviews. Ten teachers and 27 high school students were interviewed about the use of the WASH in their English class. The results indicate that (1) teachers used the program differently depending on the students’ English proficiency, (2) both teachers and students were satisfied with the program, and (3) some in-house functions of the program needed to be modified to enhance user friendliness. Based on these findings, future directions in the development of teaching, learning, and assessment programs in English writing are discussed.
신동광 ( Dong Kwang Shin ),박용효 ( Yong Hyo Park ),박태준 ( Tae Joon Park ),임수연 ( Su Yon Yim ) 한국멀티미디어언어교육학회 2015 멀티미디어 언어교육 Vol.18 No.1
The present study aims at developing an automated scoring program for assessing Korean students’ English speaking ability. Building on the prototype English speaking automated scoring program developed in 2012, this study had the following three goals in mind: First, the performance of the prototype speaking automated scoring program needs to be improved by enhancing the recognition rate of the speech recognition system embedded in the automated scoring program. Second, the algorithm of the automated scoring program needs to be improved by refining the existing pool of scoring features. Third, the performance of the modified automated scoring program needs to be validated in order to explore the possibility of applying the program to the classroom. For this, two different types of algorithms, called the Maximum Entropy (ME) and Multiple Regression (MR), were used to apply the scoring features and analyze the performances of scoring models. The results showed that MR is slightly more efficient and reliable compared with ME. The automated scoring program still has a long way to go, but it certainly has a place in speaking assessments especially when considering its potential for not only an assessment tool but also a learning tool for students.
모의 수능 영어시험의 지시문, 질문, 선택지 언어 차이가 수험생들의 시험 결과에 미치는 영향
윤지환(Yun, Jee Hwan),이문복(Lee, Moonbok),박용효(Park, Yong-Hyo) 한국응용언어학회 2012 응용 언어학 Vol.28 No.1
The primary purpose of this study was to investigate the influence of the language (i.e., Korean vs. English) of directions, questions, and choices used in an English test in the College Scholastic Ability Test (CSAT) on student test results. In addition, this study also examined how the influence of the language used varied according to a student’s achievement level, school region, and gender. In order to achieve these purposes, this study analyzed the English test results of 641 second-grade high school students from eight high schools from seven different regions. The overall results of this study indicate that the language of directions, questions, and choices in the English test had a significant influence on the students’ reading comprehension test scores, but not on their listening comprehension test scores. More specifically, students who took the English test with directions, questions, and choices written in Korean obtained higher scores on the reading comprehension test than those who took the English test in which the directions, questions, and choices were written in English. Based on these findings, educational implications are discussed.