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구본권 ( Bon Kwon Koo ) 한국유아특수교육학회 2001 유아특수교육연구 Vol.1 No.1
This study focused on investigating students in elementary school as to occurring events in integrated education of children with disabilities by having an - interview. There were more students who had an affirmative attitude than those who had a negative attitude, on integrated education of students. Students who had experienced integrated education showed more affirmative attitude than those who had not; however, significantly many students reacted to a negative attitude for questions directly relevant to themselves. In consequence, many students negatively recognized that they study along with children with disabilities. For instance, students were asked if a student with disabilities became their partner in class. They answered that they would not like it to do so because they felt inconvenience. A reason was due to the fact that students had to help the student with disabilities if they became a partner of the student with disabilities in class. But students also answered that they would not care if they were not the partner of the student with disabilities in class. These students who answered the question showed a dual attitude. In other words, students showed an affirmative reaction to questions unrelated to themselves, and on the other hand, they showed a negative reaction if the student with disabilities had a relationship with them. Other students without integration experience even showed an affirmative reaction which they would assist students with disabilities, however, it was recognized as their sympathy since students with disabilities are pitiful in their temperament.
구본권 ( Bon Kwon Koo ) 한국특수교육문제연구소 2006 특수교육저널 : 이론과 실천 Vol.7 No.2
본 연구는 1991년부터 2004년까지 특수교육 전공 342명의 학생들에게 MMPI를 실시하여 성격특성을 알아보았다. 그 결과 첫째 전체 학생의 10개의 하위검사에서 남학생들이 여학생보다 높은 경향을 보였다. 특히 히스테리(Hy)점수에서 남학생들이 여학생보다 의미 있게 높게 나타났다. 둘 째 강박증(Pt)과 정신분열증(Sc) t점수들이 시대에 따라 큰 차이가 났다. 건강 염려증(Hs), 우울증(D), 히스테리(Hy)에서 증가하고 편집증(Pa), 강박증(Pt), 정신분열증(Sc), 경조증(Ma)은 낮아지는 경향을 보였다. 셋째 t 점수에서 70이상을 보인 학생이 232명(67.8%)이다. 그 중에 1998년에 49명(68%)의 학생들이 가장 높은 점수를 나타냈다. 높은 점수의 하위 검사들은 반사회성(Pd), 강박증(Pt), 정신분열증(Sc)의 순위로 나타났다. This study investigated the personality characteristics of 342 students who majored in special education. Those 342 participants completed the MMPI (Minnesota Multiphasic Personality Inventory) from 1991 to 2004. First, the result indicated that male participants had a higher mean t-score in 10 sub-tests than female participants. In particular, male participants had significantly higher t-scores in Hysteria scales than female participants. Second, the result showed that there was an annually significant difference of t-scores in Psychasthenia and Schizophrenia. t-scores increased in Hypochondriasis, Depression, and Hysteria scales, and decreased in Paranoia, Psychasthenia, Schizophrenia, and Hypomania scales. Third, 232 participants (67.8% of 342 participants) had 70 or above in t-scores. Among those 232 participants, 49 participants (68% of 232 participants who had 70 or above in T-scores) had the highest mean t-score in 1998. The high mean t-scores in sub-tests were showed in Psychopathic Deviation, followed by in Psychasthenia and in Schizophrenia.
FEM 을 이용한 주조금형의 (鑄造金型) 탄소성 (彈塑性) 열응력 (熱應力) 및 열변형 해석
김옥삼,구본권,민수홍 ( Ok Sam Kim,Bon Kwon Koo,Soo Hong Min ) 한국주조공학회 1993 한국주조공학회지 Vol.13 No.1
N/A It is well-known that the analysis of elasto-plastic thermal stress and deformation are substantially important in optimal design of metal casting mould. The unsteady state thermal stress and deformation generated during the solidification process of ingot and mould have been analyzed by two dimensional thermal elasto-plastic theories. Distributions of temperature, stress and relative displacement of the mould are calculated by the finite element method and compared with experimental results. In the elasto-plastic thermal stress analysis, compressive stress occurred at the inside wall of the mould whereas tensile stress occurred at outside wall. A coincidence between the analytical and experimental results is found to be fairly good, showing that the proposed analytical method is reliable.
Quenching과정에서 상변태를 고려한 탄소성 열으역의 유한요소해석(1) - 오스테나이트에서 퍼얼라이트의 변태 -
김옥삼,구본권 ( Ok Sam Kim,Bon Kwon Koo ) 한국열처리공학회 1994 熱處理工學會誌 Vol.7 No.4
Constitutive relation of thermoelasto-plastic material undergoing phase transformation during quenching process were developed on the basic of continuum thermodynamics. The metallic structure, temperature and residual stresses distributions were numerically calculated by the finite element technique. The metallic structure were defined by transformation from austenite to pearlite and characterized as a fuction of thermal history and mixture rule of phase. On the distribution of thermal stress along the radial direction, axial and tangential stresses are compressive in the surface, and tential in the inner part. Radial stress is tensile in the whole body. The reversion of residual stress takes plase at 11.5∼15.5㎜ from the center.
탄소강의 Quenching처리 과정에서 변형율이력을 고려한 탄소성열응력의 유한요소 해석 (2) -탄점소성 열응력 해석-
김옥삼,구본권 ( Ok Sam Kim,Bon Kwon Koo ) 한국열처리공학회 1996 熱處理工學會誌 Vol.9 No.2
The aero-industry in union industry which includes a research development type, a knowledge accumulation type and a developed country type. The aero-industry of Korea is in semi-developed type stage but departed later than that of other country such as Taiwan, Indonesia etc. Therefore, the necessity of domestic airplane material is required. This study on 7050Al extruded alloy aims to suggest an adequate heat treatment conditions of T73, T74 and T76. The results of this study show that: 1. The optimum conditions of T7x heat treatment in extruded 7050Al alloy show this; T73 : 121℃×7hr+177℃×14hr T74 : 121℃×7hr+177℃×10hr T76 : 121℃×7hr+163℃×21hr 2. The 2nd step aging heat treatment such as T73, T74 and T76 etc. is effective in 7050Al alloy but the variation otf microstructure and mechanical property with dispersive inclusions produced for extrusion process causes some troubles. Accordingly, in order to produce a good 7050Al alloy, a careful attention is needed in manufacturing process.
민수홍,구본권,김옥삼 ( Soo Hong Min,Bon Kwon Koo,Ok Sam Kim ) 한국주조공학회 1991 한국주조공학회지 Vol.11 No.3
N/A It is known that the analysis of thermal stresses is substantially important in optimal design of casting mould. In this paper unsteady state thermal stresses generated in ingot and mould during the solidification process are analyzed by the two dimensional thermal elasto-plastic analysis. Distribution of temperature and stress of the mould is calculated using the finite element method and compared with experimental result. The significant results obtained in this study are as follows. At the early stage of the casting process, abrupt temperature change was shown in the vicinity of the inner surface of the mould. The largest temperature gradient is occurred at the corner of the mould. In the thermal stress analysis, compressible stress occurred in the inside wall of the mould where as tensile stress on outside wall. Smaller thermal stress is observed at the rounded corner. It is also observed that the shown is influenced by the thickness of the wall. A fairly good coincidence is found between analytical and experimental results, showing that the proposed analytical methodology is reliable.
탄소강의 담금질 처리과정에서 변형율이력을 고려한 탄소성열응력의 유한요소 해석(1) - 온도분포의 해석 -
김옥삼,조의일,구본권 ( Ok Sam Kim,Eui Il Cho,Bon Kwon Koo ) 한국열처리공학회 1995 熱處理工學會誌 Vol.8 No.3
Temperature distribution, transformation and residual stresses generated during the quenching process of carbon steel. It follows many difficulties in the analytical considerations on those quenching process because of the coupling effects on temperature and metallic structures. In this paper one of the basic study on the quenching stresses was carried out for the case of the round steel bar specimen(SM45C) with 40㎜ both in its diameter and length. The temperature distributions considering strain hysteresis were numerically calculated by finite element technique. In calculating the transient temperature field, the heat flux between water and rod surface was determined from the heat transfer coefficient. The gradient of temperature is almost same to geometric of specimen. At early stage of the quenching process, the abrupt temperature gradient has been shown in the surface of the specimen.