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- 저자 : 조욱상(Cho, Ook Sang) (검색결과 109 건)
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5- Methyl -4- Imidazolecarboxylic Acid Ester 연속합성 반응의 특성 및 공정개발 연구
조욱상,박상진,김성태 ( Wook Sang Cho,Sang Jin Park,Sung Tae Kim ) 한국공업화학회 1995 공업화학 Vol.6 No.2
Three continuous reactor schemes : 1) Annular Flow Reactor, 2) Continuous Flow Stirred Tank Reactor (CFSTR), 3) Heat Exchange Loop/Plug Flow Reactor, were tested under the formation of α, β-dioxobutylic acid, which is the rate-controlled step. The reactor scheme which performed best in terms of α, β-dioxobutylic acid yield consists of a heat exchange loop containing two double-pipe exchangers in series, followed by a plug flow reactor immersed in a coolant bath. The rate of formation of α, β-dioxobutylic acid was found to be a function of α-acetyl-α-hydroxy iminoacetic acid and HCl concentration. The decomposition of α, β-dioxobutylic acid was found to occur in the range of process temperature, 12∼15℃. Overall heat transfer coefficient based on inside area and the film coefficient was 25 and 40 Btu/hr-ft²-℉, respectively. The reactor scheme which was developed in this study is scalable to the commercial size, with the optimal determination of process variables.
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5- methyl -4- imidazolecarboxylic Acid Ester 연속합성의 반응속도론 및 특성 연구
조욱상,박상진,김학희 ( Wook Sang Cho,Sang Jin Park,Hak Hee Kim ) 한국공업화학회 1994 공업화학 Vol.5 No.6
The chemistry of 5-methyl-4-imidazolecarboxytic acid ester synthesis involves three distinct reaction steps. Of these the rate of formation of diketone was found to be a function of oxime and HCl concentration and temperature by the batch experiment. The decomposition of diketone was found to be a slow process, whereas temperature was the only variable to affect it significantly. An empirical rate expression for the net formation of diketone fits the experminetal data satisfactorily. The principal objectives of this study are to study the kinetics of the diketone formation reaction and to develop the empirical rate expression.
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활성슬러지 공정에서의 조업지원용 전문가 시스템에 관한 연구
조욱상,이진우,박상진,원종식,김상욱 ( Wook Sang Cho,Jin Woo Lee,Sang Jin Park,Jong Sik Won,Sang Wook Kim ) 한국공업화학회 1996 공업화학 Vol.7 No.2
A prototype of expert system which can support the operation for the municipal waste water treatment plant located at Kyoung-Ki Do, Kwang-ju Kun was developed and tested. This system provides (i) tracking the cause of the problem, (ii) analysis, and (iii) solution Knowledge-base consists of about 100 production-rules for the biological wastewater process, such as bio-reactor and final clarifier. Rules were obtained from the analysis of the problems such as sludge bulking. The system provides stable process control and management and effectively helps inexperienced operators with advanced and standard technologies. Future works will focus to develop a statistical process control model and associate with expert system. The control model can process the operation data statistically; analyze the relationship between affecting factors and control variables; and provide optimum operation parameters.
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조욱상(Cho, Ook-Sang),김종욱(Kim, Jong-Wook) 한국체육과학회 2016 한국체육과학회지 Vol.25 No.1
The purpose of the present study was to investigate possibility that practicality of school physical education assessment is improved by utilizing web-based mobile devices. In order to discuss what problems assessment of school physical education have and how to apply mobile devices to solve problems previous research studies that focused on school physical education assessment and urgent educational technologies were broadly collected by domestic and foreign research databases. Contents of collected literatures were analyzed by following categories: 1)structural problems of school physical education assessment, 2)a variety of contents and methods of assessment: a necessity of educational technology, 3)an appearance of web-based mobile device and change of school physical education assessment. According to the analysis of literature review, school physical education assessment has faced obstacles related to broaden objectives and reliability. Physical education teachers also have suffered from limitation of applicable assessment tools and complains of students and parents about assessment results. However, the present study conclude that urgent educational technologies, especially, transportability of web-based mobile device and interoperability of applications could help address structural problems of school physical education assessment that introduced above.
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Cho, Ook-Sang(조욱상) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.6
본 연구의 목적은 효과적인 체육교사교육 프로그램의 특성에 대한 연구물들을 고찰하고 미국의 체육교사교육 프로그램 평가체계를 참고로 하여 한국의 체육교사교육 프로그램을 위한 평가모델을 제시하는 것이다. 첫째, 본 연구는 교사교육의 질을 결정하는 요인을 분석하기 위해 ‘효과적인 교사 교육’에 대한 문헌을 고찰하고, 둘째, 체육교사교육의 효율성을 판단할 수 있는 교육적 지표를 선행 연구의 결과물들을 통해서 기술한다. 셋째 미국의 체육교사교육 체계와 한국의 체육교사교육체계를 비교분석하며, 넷째, 한국 체육교사교육의 효율성을 증진시키기 위한 가능한 방안을 모색해 보기 위해서 체육교사교육 프로그램을 평가할 수 있는 모델의 예를 제시한다.
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조욱상(Cho, Ook-Sang),이용국(Lee, Young-Kuk) 한국체육과학회 2013 한국체육과학회지 Vol.22 No.6
The purpose of the study was to investigate outcomes and practical problems of minimum academic achievement for student athletes. In order to examine outcomes and practical problems of minimum academic achievement policy this study focused on perspectives of school coaches and teachers on how to update minimum academic achievement policy. 3 coaches and 2 teachers of elementary, middle, and high school(each one) that are located in a same school district participated in this study. Data were collected by in-depth interviews with participants of the study and documents such as the implementation reports. The analysis of data highlighted how this policy influenced on student-athletes" academic achievement and the changes of student-athletes" academic achievement and athletic performance. The result shows that minimum academic achievement for student athletes positively impacted on both student athletes" academic achievement and athletic performance. But this study discusses controversial issues related to effectiveness of minimum academic achievement policy for a stable settle down of this new policy, The results of the study will provide a theoretical background for policy supplementation.
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한국과 미국의 엘리트 선수 양성을 위한 전문코치양성 프로그램에 관한 문제점 고찰
조욱상(Cho, Ook-Sang),전병관(Jeon, Boung-Kwan) 한국체육과학회 2011 한국체육과학회지 Vol.20 No.6
The purpose of the study was to investigate controversial issues in coach education programs for elite student athletes in both South Korea and the United States. In order to describe previous researchers’ perspectives on the effectiveness of coach education programs of both countries, published studies which focused on coach education programs were reviewed by highlighting problems and improvements. According to the findings, coach education programs of both countries are still required to establish systematic curriculums for more scientific approaches in order to improve student athletes’ game performances. In addition, coach education programs in South Korea are seeking solutions for the problem of how to educate athletic students who study hard for other academic subjects while the United States already has institutionalized management systems for athletic students.
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현직체육교사들의 체육교사교육 실효성에 대한 비판적 소고
조욱상(Cho, Ook-Sang),김종욱(Kim, Jong-Wook) 한국체육과학회 2014 한국체육과학회지 Vol.23 No.3
The purpose of the study was to investigate physical education teachers’ critique of the effectiveness of teacher professional development programs for physical education teachers’ expertise and to suggest a practical teacher professional development prognun regarding the current physical education teachers’ critique. In terms of data collection, four secondary physical education teachers who were involved in a physical education pedagogy major master program of a university participated in this study. All participants had in-depth interviews with researchers focusing on contents and instructional approaches of the current professional development programs for physical education teachers and practical approaches to improve the effectiveness of teacher professional development programs. Interview data were analyzed by the inductive analysis by creating categories related to practical problems around physical education teachers’ professional development and possible instructional approaches for reforming teacher professional development programs. The results reveal that the participated physical education teachers had negative perspectives on effectiveness of teacher professional development programs because of low quality of curriculum. teachers’ indifference, and institutional problems. The suggested practical professional development program for physical education teacher emphasizes the need for reforming teacher education curriculum and understanding teacher development stages.
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