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상호작용놀이활동이 교육가능급 정신지체 아동의 언어능력에 미치는 효과
정찬연(Jeong Chan-yeun),강수균(Kang Soo-Kyoon),박재국(Park Jae-Kook) 한국재활과학회 2005 難聽과 言語障碍 Vol.28 No.1
The purpose of this study was to examine the effect of play-based interaction on language abilities in the children with educable mental retardation. The subjects were 3 children who were between 1∼3 grade in the primary school for handicapped children and the level of SQ is from 4year 8month to 5year 8month old and the ability of receptive-expressive language is approximately between 2year 9month and 3year 11month. In the beginning of study, Pretest was held April 15∼17, 2003 and experimental test with program which is play-based interactive program was taken 12 times from April 22 ∼ July 8, 2003. In the end is researched from July 14∼16, 2003 after completing all tests. The same method is used through research for exact comparison(PLS) The results from this study are as follows; (1) The play-based interactive program improved the ability of understanding language skill by 7 month in 2 children and by 11 month in another. (2) The play-based interactive program improved the ability of expressing language skill by 9months in one child, 8 and 4 in the other children.
위상배열 초음파를 이용한 내부 균열 및 미세 결함 검사
배시연(Siyeon Bae),정찬서(Chanseo Jeong),임병수(Byeongsoo Lim) 한국자동차공학회 2003 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The cavity nucleation, growth and coalescence are very important factors in analyzing creep characteristics. In the uniaxial creep tests, the size of cavity increased with increasing strain when stress and temperature were changed. In the case of creep crack growth, the size and number of cavities changed with the nucleation and coalescence, and the changes in crack growth and load line displacement rate followed. This resulted in the change in da/dt vs C_t. The inner defects of P92 and P122 steels were investigated by Intelligent Phased Array Ultrasonic Inspection System. The PAULI system was found to be capable of detecting the creep crack length and crack tip defects, and confirmed ultrasonic characteristics of the cavity on crack tip.
초음파를 이용한 구조물 내부의 균열 및 미소 결함 검출
임병수(Byeongsoo Lim),배시연(Siyeon Bae),정찬서(Chanseo Jeong) 한국자동차공학회 2004 한국자동차공학회 춘 추계 학술대회 논문집 Vol.- No.-
The initiation and growth of internal defects usually cause the failure of long term operated structural components at high temperature. Therefore, by investigating the internal defects of material, the integrity of the system can be maintained and the unexpected failure can be prevented. The main purpose of this study is to investigate the possibility of the application of ultrasound to the measurement and estimation of the creep damage. In this study, the phased array ultrasound and backward ultrasound were employed to detect the internal defects caused by creep. The former is suitable for the detection of defects existing deep in structure while the latter is for the defects on the surface or in shallow region. Using the newly developed P92 steel. both creep and NDE ultrasound tests were performed. The results of defect inspection were checked by microstructure examination. Reliable information on the size and position of crack were obtained and successful estimation of the amount of micro-voids and their distribution proved to be obtainable by the ultrasound inspection technique. The width of the creep degraded zone was confirmed by the width of ultrasonic signal, and the severity of degradation was confirmed by ultrasonic amplitude.
장애인복지법 15조 개정에 따른 지역사회에서의 정선장애인 복지서비스 확대 방안
윤상용(Sangyong Yoon),김창수(Changsoo Kim),정찬연(Chanyeun Jeong),김보배(Bobae Kim),김은정(Eunjeong Kim),김보미(Bomi Kim) 충북대학교 생활과학연구소 2024 생활과학연구논총 Vol.28 No.1
Ⅰ. 서론 Ⅱ. 이론적 배경 Ⅲ. 연구방법 Ⅳ. 결과 및 논의 Ⅴ. 결론 및 제언 참고문헌