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전수완,이정은,박정규,김상환 한국화학공학회 2015 Korean Journal of Chemical Engineering Vol.32 No.2
Catalytic oxidation of formaldehyde, carbon monoxide, and methanol over cordierite-supported manganese-cerium-aluminum mixed oxides was investigated in a laboratory reactor. The activities of base metal oxides (BMO)comprising 27% MnO2, 21% CeO2, and 52% Al2O3 supported on cordierite monoliths calcined at 1,000 oC for 3 h in airdropped very rapidly due to the migration of mobile silicon dioxide (SiO2) from the cordierite to the base metal oxidesto react with or physically block the active catalysts. To immobilize migrating SiO2, barrier coats composed of alkalimetal (Ba, Sr, Ca, Mg) oxides and alumina were applied to the cordierite prior to coating with active base metal oxides. The base metal oxides supported on cordierite monoliths pretreated with BaO-Al2O3 barrier coats and calcined at1,000 oC for 3 h in air, initiated the oxidation of HCHO, CO, and CH3OH at 150, 220, and 170 oC, respectively. Thesecatalysts turned out to be more effective for the formaldehyde oxidation than 0.5% Pt/Al2O3 precious metal catalysts. Carbon monoxide and methanol oxidation conversions were comparable. The incorporation of small amount of palladium(0.147 wt%) to base metal oxides supported on cordierite monoliths pretreated with BaO-Al2O3 barrier coats,showed the superiority for HCHO, CO, and CH3OH oxidation to 0.5% Pt/Al2O3 precious metal catalysts. The temperaturesof 50% conversion of formaldehyde, carbon monoxide and methanol were 70 oC lower over base metal oxidescatalysts than over precious metal catalysts.
PROLOG기반의 규칙 기반 전문가 시스템을 이용한 서울시 도시 공원 추천 시스템 구현
손세진,김다희,조예본,전수완,이강희 사단법인 인문사회과학기술융합학회 2017 예술인문사회융합멀티미디어논문지 Vol.7 No.7
In this paper, we propose a system to users which recommends suitable park using linguistic objects by rule-based inference engine which is made with Prolog. According to the function of city park, which provides positive elements to people such as social, psychological, environmental, and physical, Seoul city park is classified into 6 categories. The classified parks are recommended to users based on the rule based expert system. Rule-based object of park recommendation designs nine linguistic objects based on activity, multi-purposiveness, accessibility, and usage of time. This assigns allowed value accordingly. Generated rules by using these values are fired by user’s preference, and infer recommended park. Information on preferences is obtained by way of dialogue, in which the user is asked questions about the three elements that are the criteria for choosing a park. As a result, through the park recommendation system, we intend to increase the user’s satisfaction of using park and leisure activities. 본 논문은 사용자들에게 알맞은 공원을 추천해주는 시스템을 제안한다. 사회적, 심리적, 환경적, 신체적 등 사람들에게 긍정적인 요소를 제공하는 도시공원의 기능에 따라 서울시 도시공원을 6가지로 분류한다. 분류된 공원을 규칙기반 전문가 시스템을 기반으로 사용자들에게 추천한다. 공원 선택에 영향을 주는 요인들을 언어 객체로 설정하여 규칙 기반 추론 시스템을 논리 프로그램 언어인 PROLOG로 구현한다. 공원 추천의 규칙 기반 객체는 활동·다목적성과 접근성, 이용 시간을 기준으로 총 9가지 언어 객체를 설계하고 그에 따른 허용된 값을 부여한다. 이를 이용하여 생성된 규칙들이 사용자의 선호도에 따라 점화되고 추천 공원을 추론한다. 선호도에 대한 정보는 사용자들에게 직접 공원 선택에 있어서 기준이 되는 세 가지 요소에 대한 질문을 건네는 대화의 방식으로 얻는다. 결과적으로 공원 추천 시스템을 통해 공원 이용자들의 공원 이용 및 여가 생활에 대한 만족감을 높여주고자 한다.
안성훈(An Sung-Hoon),신정현(Shin Jung-Hyun),전수완(Jeon Su-Wan) 대한건축학회 2011 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.31 No.2(구조계)
Apartment constructions are more complex. To resolve in these problems, We need to study ordering method in interior finishing work. The object of this study is to search the status of ordering methods in interior finishing work in apartment constructions. As a result, combined ordering method is a excellent construction management, but it is disadvantage of risking burden aspect, dividing ordering method is good economic but not good construction management. So, we need additional effort to improve construction management about dividing ordering method and to decrease risk about combined ordering method.