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단어출현빈도분석과 AHP를 통한 기술 연구 동향과 기대 효과 분석: 바이오 에너지 분리막을 중심으로
이인우(Lee, In-Woo),서한결(Seo, Han-Gyeol),장수진(Jang, Soo-Jeen),조철희(Cho, Churl-Hee),정양헌(Chung, Yang-Hon) 한국경영교육학회 2020 경영교육연구 Vol.35 No.5
[연구목적] 본 연구는 과학 기술 연구 동향과 기술 도입 기대 효과를 함께 분석하는 방안을 바이오 에너지 분리막 분야에 적용하여 연구개발 전략 제시에 도움이 되는 연구 방안을 제시하고자 하였다. [연구방법] 본 연구는 분리막 기술 연구 방향과 기대효과를 분석하기 위해 각각에 대해 두 가지 연구방법을 이용하였다. 우선 텍스트 마이닝을 통해 단어출현 빈도분석으로 선행연구의 연구 방향을 확인하였고, AHP를 통해 기대효과를 알아보았다. [연구결과] 분석결과 분리막 기술의 연구 방향은 주로 분리막 관련 다양한 공정과 공정개선을 통한 성능 향상에 있는 것으로 확인되었다. 분리막 기술을 통한 기대 효과는 바이오 에너지 공정에서 발생하는 환경 문제 해결이 주된 것으로 나타났다. [연구의 시사점] 분리막 관련 연구는 분리막 성능에 중점을 두고 진행되고 있으며 분리막을 실제 공정에 도입하는 측에서 기대하는 부분은 분리막 도입으로 인한 효과와 분리성능 향상에 의한 효과에 중점을 두고 있음을 확인하였다. 이는 분리막 기술 연구가 실제 니즈를 잘 반영하여 이루어지고 있음을 보여준다. 이처럼 특정 기술의 연구 방향과 도입에 따른 기대효과를 함께 분석할 수 있으며, 이는 연구개발 전략 제시에 도움이 될 수 있음을 확인하였다. [Purpose] Purpose of this study is to propose a research methodology that is helpful in presenting the R&D strategy by applying analysis on research trends and expected effect of technology introduction together in the field of bioenergy membranes. [Methodology] For this purpose, we used two research methodologies. Word frequency analysis of text mining was used to analyze the research trends of previous studies, and the expected effect was investigated through AHP. [Findings] This study found that the research trends of membrane is mainly to improve performance through various processes and expected effect focus on environmental problem solving arising from bioenergy process. [Implications] It was confirmed that main research trends of membrane is performance of membrane and expected effect is performance improvement by introduction of membrane in bioenergy processes. This shows that research on membrane is well reflected in actual needs. This methodology can be helpful in presenting the consumer-oriented R&D strategy.
원형 탈모증의 임상적 고찰 ( 1996 - 2000 ) ( 제 4 보 )
탁우정(Woo Jung Tak),정유선(You Sun Chung),노병인(Byung In Ro) 대한피부과학회 2002 대한피부과학회지 Vol.40 No.7
N/A Background : Alopecia areata patients has recently increased in number. The clinical features and therapeutic results of alopecia areata are diverse and unpredictable. Objective : We, the authors, performed a study on alopecia areata in order to evaluate the clinical manifestations and compare the efficacies of treatment with intralesional injection of triamcinolone acetonide suspension, immunotherapy with diphenylcyclopropenone(DPCP), and photochemotherapy with psoralen plus UVA(PUVA). Methods : A clinical study of 732 patients with alopecia areata including 33 cases of alopecia totalis and 46 cases of alopecia universalis was performed for 5 years, since March, 1996 to February, 2001 who visited to Alopecia Clinic at the Department of Dermatology, Collage of Medicine, Chung-Ang University. Results 1) The age distribution showed a peak incidence in the third decade(29.1%) and the mean age was 26.8 years and 136 cases(18.6%) showed alopecia areata in patients below 10 years old. 2) Previous episodes of alopecia were observed in 173 cases(23.6%) and 58 cases(7,9%) had family history of alopecia areata. 3) The most common site was the occipital region in both male and female patients, which were 251 cases(38.4%) and 218 cases(33.4%) respectively. 4) Associated diseases with alopecia areata included seborrheic dermatitis(97 cases), allergic contact dermatitis(25 cases), liver disease(22 cases), hypertension(18 cases), diabetes mellitus(16 cases), urticaria(16 cases), atopic dermatitis(l4 cases) and thyroid disease(8 cases). 5) The efficacies of treatment modality had no statistical differences in DPCP immunotherapy, intralesional triamcinolone injection or photochemothrapy. Conclusion : There was no noticeable differences compared to previous studies on alopecia areata, except that increasing tendency of severe, recurrent, and refractory alopecia areata and number of chilclhood patients.
정우성,강상원 漢陽大學校 工學技術硏究所 1997 工學技術論文集 Vol.6 No.1
This paper presents an efficient variable rate algorithm for the CS-ACELP cosec. For the rate determination, we propose an algorithm to combine both the energy thresholding method and the variable hangover period. Through analysis of noise features, the 1 kbps sub-rate coder is designed for coding the background noise signal. Also, we design the 4 kbps sub-rate coder for unvoiced parts. The performance is evaluated by the comparison of speech quality and average bit rate with the 8 kbps CS-ACELP coder. Conclusively, it is verified that the proposed variable rate CS-ACELP coder produces the same speech quality as the 8 kbps CS-ACELP coder, at the average bit rate of 4.2 kbps.
Web 기반의 양식장 경영 자동화 Application 개발과 정보검색 시스템 개발
정정수,권장우,김정인 동명정보대학교 2000 東明情報大學校論文集 Vol.3 No.-
In this paper, we present a standard S/W solution for nursery administration. This S/W would substitute for classical nonscientific nursery management that has depended on personal experience and intuition. Especially, the suggest S/W design concepts are based on a daily diary writing on a computer. It means every statistical data and information for a sales forecast analyzed on the program just by keeping a diary. Also it has two operation mode of easy menu and advanced menu for a different level of user.
불량주거지 주거환경개선 목표설정을 위한 거주민의 중요도에 관한 연구
정금호,최우람 대한건축학회 2004 대한건축학회논문집 Vol.20 No.5
The purpose of this study is to examine the priority order in determining the goal of the residential environment improvement plan, in Shin-an district, Gwangju. To decide the order, "Analytic Hierarchy Process", one of the analytic methods, is used. In systematically analysing the problems, it could enable us to itemize the intricate problems in setting up the goals and to know the priority between elements. The results of this study can be summarized as the followings; Firstly, in the subject area, the priority order of residential environment improvement are listed below : Security from Firstly, in the subject area, the priority order of residential environment improvement are listed below : Security from Secondly, for housing environment improvement, senses of the residents in the subject area are divided below : Construction, Building equipment, Social infrastructure, Public facilities, Social and economic characteristics, and Psychologic characteristics. Lastly, the order between them are list below : Public facilities, Psychologic Characteristics, Social and economic characteristics, Building equipment, Construction, and Social infrastructure.
정성엽,정우광 국민대학교 생산기술연구소 2002 공학기술논문집 Vol.25 No.-
The E.M.F of the galvanic cell with fused salt was measured to determine the activities of zinc at 700-820K over the entire composition range of liquid Zn-Cd alloys. The cell used was as follows: (-) W│Zn(pure)│Zn^(2+)(KCl-LiCl)│Zn(in Zn-Cd alloy)│W (+) The activities of zinc in the alloys showed positive deviation from Raoult’s law over the entire composition range. The activity of cadmium and some thermodynamic functions such as Gibbs free energy, enthalpy, entropy were derived from the results by the thermodynamic relationship. The comparison of the results and the literature data was made. The liquid Zn-Cd alloy is found to be close to the regular solution. The concentration fluctuations in long wavelength limit, Scc(o), in the liquid alloy was calculated from the results.