접착부 형상이 알루미늄/폴리카보네이트 접합재의 강도에 미치는 영향

서도원(Do Won Seo),김효진(Hyo Jin Kim),최준용(Jun Yong Choi),Vu Cong Hoa,임재규(Jae Kyoo Lim) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.11

Adhesive-bonded joints are widely used in the industry. Recently aircraft applications of adhesive bonding<br/> joints have been increased extensively in automobile and air industry. Because adhesives which are available<br/> for structural applications have been developed a lot and understanding of adhesive bonding has been<br/> improved so much. In this study, as the fundamental research of design of adhesive bonding joints, this study<br/> considers specimen shape are affect strength and durability of Al/Polymer lap joints. In this research, cross<br/> head speed difference were concerned to evaluate their effects on the adhesive strength. Cross head speed<br/> makes a change 0.05mm/min, 0.5mm/min, 5mm/min. The result is load-displacement diagram showed<br/> brittleness fracture tendency. Fracture tendency that is shown enough on stress distribution of trigonal single<br/> lap joint and trigonal edged single lap joint occur the inside of adhesive.

외부환경 인식용 스마트 필터 시스템에 대한 연구

서도원(Do-Won Seo),윤근영(Keun-Young Yoon) 한국전자통신학회 2021 한국전자통신학회 논문지 Vol.16 No.2

본 논문은 외부환경을 인식하고 오염도에 따라 자동으로 오염물질을 제거하는, 스마트 필터 시스템의 구현에 관한 연구이다. 최근 실내외 공간에서 다양한 오염물질의 발생은 인체에 악영향을 미치고 있으며 특히 대기 중에서 발생되는 다양한 미세먼지는 밀폐된 주거 공간이나 사무공간에서 심해진다. 환기 등을 통해 일시적인 공기질 오염도를 낮출 수는 있으나 미세먼지 변화를 실시간적으로 대응하는 것이 어려워 가정이나 산업체와 같이 다수의 인력이 상주하는 공간에서 이와 같은 문제점은 심각해진다. 따라서 거주 공간의 내부의 미세먼지 농도를 실시간적으로 측정하고, 외부와의 자동 환기를 통해, 실내 환기의 오염농도를 저감시킬 필요성이 있다. 이와 같은 문제점을 개선하기 위하여, 본 논문에서는 외부환경 인식용 스마트 필터 시스템에 대한 구현을 제안하고자 한다. 실내외부의 공기질을 자동으로 측정하고, 오염물질을 제거하는 스마트 필터 시스템에 대한 구조를 설계하고 기능을 구현하였으며, 시제품을 제작하여 동작성을 확인하였다. 최종적으로는 스마트 필터 시스템의 미세먼지 문제 해결에 대한 효용성을 검토하였다. This paper is a study on the implementation of smart filter system that recognizes the external environment and automatically removes pollutants according to pollution level. Recently, the occurrence of various pollutants in indoor and outdoor space has adversely affected the human body. Especially, various fine dust generated in the atmosphere becomes worse in closed residential space or office space. Although air pollution can be temporary lowered through ventilation, it is difficult to respond to fine dust changes in real time, and such problems become serious in the space where many people reside, such as at home or industry. Therefore, it is necessary to measure the pollution level of fine dust inside the residential space in real time and to reduce the pollution of indoor ventilation through automatic ventilation with the outside. To improve these problems, this paper proposes the implementation of smart filter system for external environment recognition. The structure of smart filter system that automatically measures air quality inside and outside, removes pollutants, implements the function, and confirms the operability by manufacturing prototypes. Finally, the effectiveness of the smart filter system for solving fine dust problems was examined.

선형엑츄에이터를 이용한 실내 공기질 개선 시스템에 대한 연구

서도원(Do-Won Seo),윤근영(Keun-Young Yoon) 한국전자통신학회 2021 한국전자통신학회 논문지 Vol.16 No.1

본 논문은 실내 공기질 개선을 위한 스마트 공기청정 시스템 구현 및 구동에 관한 연구이다. 최근 다양한 환경적 요인으로 인해 실내 공기질 오염에 따른 문제가 심각해지고 있다. 본 연구에서는 이와 같은 실내 공기질 오염의 문제점을 개선하기 위해, IoT 센서를 활용한 스마트 공기청정 시스템을 구현하고자 한다. 특히 공기질 오염도를 실시간으로 측정하고, 오염도에 따라 서로 다른 공기 정화 경로를 가변시켜 줄 수 있는 시스템을 제안하였다. 이를 통해 효율적인 공기질 개선 및 필터의 수명 연장, 시스템 에너지 저감 등을 검토하였다. 또한 실내 공기질 개선 시스템에 대한 기능을 구현하기 위해 주요 부품을 선정하였고, 시제품을 제작하여 동작성을 확인하였다. 최종적으로 선형엑츄에이터를 활용한 실내 공기질 개선 시스템의 구현을 통해, 공기질 개선에 대한 효용성을 검토하였다. This study is a study on the implementation and operation of smart air cleaning system to improve indoor air quality. Recently, the problem of indoor air quality is getting serious due to various environmental factors. In this study, to improve the problems of indoor air quality, we implement an air cleaning system using IoT sensor. In particular, we proposed a system that can measure air pollution in real time and change different air flow paths according to pollution level. Through this, we examined efficient air quality improvement, extension of filter life, and system energy reduction. In addition, the main functions of the indoor air quality improvement system were constructed and prototypes were manufactured to confirm the operability. Finally, the utility of fine dust resolution through the implementation of the indoor air quality improvement system was examined.

점용접 아연도금판의 강도특성에 대한 온도 및 침수의 영향

서도원(Do Won Seo),윤호철(Ho Chel Yoon),최준용(Jun Yong Choi),임재규(Jae Kyoo Lim) 대한기계학회 2003 대한기계학회 춘추학술대회 Vol.2003 No.4

Spot welded structure is operated in diverse climatic situation because of temperature, humidity and precipitation. In addition factors of environmental pollution such as acid rain, that courses corrosion, have the tendency to increase. But spot welded structure strength is affected by dampness and environment temperature. Therefore, it is important to evaluate effect of temperature of spot welded part. In this study, the strength distribution of spot welded plates is evaluated about the environmental temperature of zinc coated steel plates and test is conducted with welded part immersed in distilled and synthetic sea water. Specimens are immersed into water for 10, 100, 500 and 1000hours to evaluate the effects of water immersion time on tensile-shear strength under the conditions of -40, 0, 20 and 50℃. Strength is evaluated by tensile-shear test. The conditions of spot welding are 240kgf delctrode force, 10kA welding current with 0 and 5mm clearance. From this study, spot welded specimens with clearance have lower tensile-shear strength in the distilled water or synthetic sea water comparing with spot welded specimens without clearance. And they have lower tensile-shear strength under -40℃ and over 50℃.

충남 아산 지역 수화의 조어와 비수지신호 특성 연구

서도원(Do Won Seo),윤병천(Byeon Cheon Yoon) 한국언어치료학회 2007 言語治療硏究 Vol.16 No.3

This study also made comparison between the vocabularies of this regional sign language and Korean Sign Language Dictionary, the benchmark resource, in order to find out the coinage characteristics of this regional language vocabulary. This study is aimed at finding out the unique characteristics in the coinage of the regional sign language in Asan through making a comparative analysis with Korean Sign Language Dictionary and identifying, analyzing and interpreting how non-manual signals of the regional sign language in Asan are realized. This study conducted an analysis on the data from the existing preliminary research, literary reviews, individual interviews and the recorded films from field surveys for investigating and analyzing the lexical characteristics of the regional sign language in Asan. The conclusion from this study can be outlined as following. It was found out that there exist differences between the Asan regional sign languages and Korean Sign Language Dictionary. The vocabularies is of this regional sign language are appeared to realize non-manual signals in its lexical items of each category far more noticeably than those of Kora Sign Language Dictionary. In conclusion, in the process of compilation, regional sign languages should avoid using pictures and substitute them with photographs that can reflect non-manual signals better, thereby expressing the correct meanings. The research on the technical description of non-manual signals should be also conducted.

서울 차이나타운 조성을 위한 도시디자인 가이드라인 연구

문선욱(Sun-Wook Moon),서도원(Do-Won Seo) 서울연구원 2010 서울도시연구 Vol.11 No.1

유도면전류와 면적형 자기센서 배열을 이용한 알루미늄 합금 구조물의 피로균열 비파괴평가

박영민(Young Min Park),서도원(Do Won Seo),전종우(Jong Woo Jun),이진이(Jinyi Lee),신기수(Ki Su Shin) 대한기계학회 2011 대한기계학회 춘추학술대회 Vol.2011 No.4

PLUG 용접결합부의 피로수명에 관한 연구

임재규(Jae-Kyoo Lim),서도원(Do-Won Seo),윤호상(Ho-Sang Yoon) 한국자동차공학회 1999 한국 자동차공학회논문집 Vol.7 No.2

박스형 철골빔이 적용된 프리스트레스 할로우-코어 합성슬래브의 해석연구

홍성걸(Hong, Sung Gul),서도원(Seo, Do Won) 한국콘크리트학회 2005 한국콘크리트학회 학술대회 논문집 Vol.2005 No.11

농학생의 이중언어 교육을 위한 제반요소가 학업성취에 미치는 영향에 대한 사례 연구

김미은 ( Mi Eun Kim ),서도원 ( Do Won Seo ),윤병천 ( Byeong Chen Yoon ) 한국특수교육문제연구소 2007 특수교육저널 : 이론과 실천 Vol.8 No.3

본 연구는 이중언어를 사용하고 있는 농학생을 대상으로 이중언어를 사용하게 된 사회.문화적 배경을 살펴봄으로써 이중언어 교육에서 먼저 습득되어야 할 제 1 언어인 수화의 습득과정과 당위성을 살펴보고, 통합교육에서 농학생의 이중언어 교육과 학업성취를 위한 수화통역지원의 중요성과 필요성을 밝히고자 하였다. 또한 이중언어 교육이 농학생의 학업성취에 미치는 영향을 분석.파악하고자 하였다. 본 연구의 결과는 농학생의 학업성취를 위한 이중언어 교육의 성공적인 실행을 위한 제반요소를 탐색하고, 이중언어 교육프로그램의 방법적 요소들을 고찰함으로써 향후 농학생을 위한 이중언어 교육의 실제적 도입을 위한 기초자료로 활용될 수 있을 것이다. This study, which took bilingual deaf students as its objects of investigation, looked into the socio-cultural backgrounds that made the deaf students become bilinguists and analyzed the impacts of bilingual deaf education on their scholastic achievements.The results of this study can be outlined as following: First, after looking into the process of sign language acquisition of the deaf student 1, 2 and 3, who had been grown up under deaf parents, this study found out that they were be able to acquire sign language as the first language naturally in daily life, in the course of communicating with their deaf parents. Second, despite the sign language interpretation supports in the integrated education are not equal to perfect bilingual educational circumstances, it was found out that the supports are required for the bilingual deaf education and can induce a sense of social stability, the self-confidence and the desire and incentive for scholastic achievements, which are all appeared to be influential factors to their school scores. Lastly, as seen in the analysis on the scholastic achievement each subject through bilingual deaf education, the deaf student 1 showed high scores ranged from 6 points to 25points in Korean, mathematics and science, with exception of social studies. The deaf student 2 also shows the growth in the average marks by 7 points in Korean and mathematics, with high scholastic achievements near or more than the average marks of his whole class.