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이찬주(C.J.Lee),김병민(B.M.Kim) 한국소성가공학회 2010 한국소성가공학회 학술대회 논문집 Vol.2010 No.5
Nowadays, multi-material design is a modem design concept in industry to achieve the purpose of product best, such as light-weight, cash and corrosion resistance. In this concept, a new joining method is required because of different mechanical and thermal properties of joined materials. Hybrid joining is a combination of at least two fundamental joining techniques. In this paper, the various hybrid joining methods and its joining operations are introduced such as weld-bonding, hybrid clinching, and self piercing rivet. Mechanical joining with adhesive bonding is a typical hybrid joining method. This approach is commonly adopted within the automotive and aerospace industries. Compared to solely mechanical joining method, the advantage of hybrid joining with adhesive bonding is increasing joint strength and durability and improving the ability to absorb energy under impact load. Compared to adhesive bonding method, the hybrid joining can achieve the relief of joint under peel loads and high static loads, extension of temperature range for application.
AR (augmented reality) Art and Imaginary Space
Lee, Chanju(이찬주),Lee, Minsoo(이민수) 한국디자인지식학회 2014 디자인지식저널 Vol.30 No.-
AR Art and Imaginary Spaces is an art exhibition for galleries and museums which includes a painting and an installation. The exhibition also includes hand drawing animations in Unity 3D using the Qualcom AR SDK, which are viewable on Android smart phones. I think that the adaptation of augmented reality (AR) technology can be a solution for the temporal and spatial limitations of colorless cubical spaces in galleries and museums. In AR Art and Imaginary Spaces, I explore the space of mixed reality with an artist’s imagination. In order to improve unique and immersive user experiences and active interactions, I want to present imaginary spaces and enable viewers to imagine their own spaces. I believe that by using AR technology, I will be able to lead the viewers into their own imagined worlds by sharing the messages and memories contained in my artwork.
아날로그 전자회로와 마이크로프로세서를 함께한 프로젝트 기반학습에 관한 연구
이찬주(Chan-Joo Lee) 융복합지식학회 2021 융복합지식학회논문지 Vol.9 No.3
이 프로젝트는 전자공학과관련 학과의 필수 교과목인 ‘전자회로’에서 PBL을 수행한 결과이며, 제품을 설계하고 제작하는데 주안점을 두었다. 제품을 만들어 보는 경험은 많은 공학교육관련 프로그램에서는 중요한 주제이며, 실제로 경험이 있는 엔지니어를 요구하는 취업시장에서도 큰 경쟁력을 가지고 있다. 본 연구에서는 아날로그 전자회로는 물론 디지털이론, 마이크로프로세서와 C 언어 등 다양한 교과목의 내용을 통합하고, 공학적인 설계능력을 배양하도록 문제를 구성하였다. 팀활동을 강조하였으며 브레인스토밍을 통하여 다양한 아이디어를 제안하고, 개발하고자 하는 장치의 타당성을 검토하였다. 적외선 방출기 및 검출기, 그리고 마이크로프로세서를 이용하여 모터와 디스플레이를 제어하는 하드웨어를 최종적으로 구현하는 것을 목표로 하였다. 강의중심 수업과 비교하여 강의평가의 결과는 매우 우수한 편이었으며, 특히 PBL 만족도의 경우 학생들은 협업(Collaboration)의 항목에 가장 긍정적으로 답변하였다. This project is the result of performing PBL in ‘Electronic Circuit’, a compulsory subject of the Department of Electronic Engineering, and focused on designing and manufacturing products. The experience of making a product is an important topic in many engineering education-related programs, and it has great competitiveness in the job market that requires engineers with practical experience. In this study, the contents of various subjects such as digital theory, microprocessor and C language as well as analog electronic circuits were integrated. The problem was structured to cultivate engineering design ability. Team activity was emphasized, various ideas were proposed through brainstorming, and the feasibility of the device to be developed was reviewed. The ultimate goal was to implement a hardware including an infrared emitter and detector, and a microprocessor to control the motor and LCD display. Compared to lecture-oriented classes, the results of class assessment were very good. In particular, in the case of PBL satisfaction survey, students answered the keyword of Collaboration most positively.
이찬주 ( Chan Joo Lee ),최준정 ( Jun Jeong Choi ),전한호 ( Han Ho Jeon ),정경수 ( Kyung Soo Jung ),박병훈 ( Byung Hoon Park ),박선철 ( Seon Cheol Park ),신상윤 ( Sang Yun Shin ),정우영 ( Wou Young Chung ),변민광 ( Min Kwang Byu 대한결핵 및 호흡기학회 2008 Tuberculosis and Respiratory Diseases Vol.64 No.5
Angiosarcoma is a rare but highly malignant tumorthat usually arises in the scalp or face of elderly males. Distant metastases favor the lung, liver, lymph nodes and skin. Metastatic pulmonary angiosarcoma commonly takes the form of a nodule but can sometimes appear as a thin-walled cyst. We report a case of 65 years-old male with a spontaneous pneumothorax, who underwent excision and radiotherapy for an angiosarcoma of the scalp 2 years ago. A chest CT scan revealed multiple cysts in the lung. The video-assisted thoracoscopic lung biopsy demonstrated subpleural cysts without tumor cells. A skin biopsy of the scalp showed an angiosarcoma. This case was diagnosed as a recurrence of an angiosarcoma with a supposed lung metastasis. This case suggests that a spontaneous pneumothorax in elderly people may be secondary to a pulmonary metastasis from an angiosarcoma of the scalp. (Tuberc Respir Dis 2008;64:374-378)