김대건 (안드레아) 신부 얼굴복원

한승호(Seung-Ho Han),박대균(Dae-Kyoon Park),이우영(U-Young Lee),고기석(Ki-Seok Kohl),김희진(Hee-Jin Kim),허경석(Kyung-Seok Hu),남용석(Yong-Seok Nam) 대한체질인류학회 2001 대한체질인류학회지 Vol.14 No.3

본 작업은 서울대교구 명동성당에서 가툴릭의대에 우리나라 최초의 신부인 김대건 신부의 얼굴복원작 업을 의뢰해 1999년 9월부터 약15개월에 걸쳐 북원작업을 한 것으로 1971년 가툴릭의대 해부학교실에서 조사한 김대건 신부 머리뼈의 직접제측치와 사진 자료를 창조하여 제작하였다 작업의 과정은 머리뼈 계측값이 가장 비슷한 머리뼈를 찾아 복제를 하고 계측치에 맞게 수정한 후, 해부학 실습용 시체에서 직접계측하거나 초음파를 이용하여 간접계측을 한 한국인 얼굴의 표준두께를 적용하여 영굴을 복원하였다. 아울러 한국인에서 조사 한 머리뼈와 얼굴 각 부위의 연관관계자료를 토대로 유토를 이용한 복원작업을 시행하였으며 최종 결과물은 청동을 소재로 흉상을 만들었다. 이와 같은 작업은 법의학분야에서 신원미확인 머리뼈가 발견되었을 때 얼굴복원을 통해 신원을 확인하는 법 의인류학적 연구의 하나로, 한국인의 자료를 토대로 작업한 최초의 영굴복원이며 앞으로 신원확인을 위해 얼굴 을 복원하는 작업에 도움이 될 것으로 생각한다.

강재 슬릿형 댐퍼를 부착한 철근콘크리트조 골조의 거동

신종익,이정한,송한범,강대언,오상훈,차승렬,이용재,김상대,이원호 대한건축학회 2004 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.24 No.1(구조계)

This study investigates the performance of the reinforced concrete frame with the steel plate slit damper. The test was carried out to investigate the structural behavior between the reinforced concrete bare frame and the reinforced concrete frame with the steel plate slit damper. The test results showed that the energy absorption capacity of the damped-frame was several times larger than that of the bare frame. For the damage by the input energy is concentrated on the steel plate slit damper, the ductilities of the former structure were increased and the damaged frame can be reused after exchange the steel plate slit damper.

소적정원산(消積正元算)으로 호전된 적증(積證)환자 1례 보고

허진일,조동희,김동우,임희용,오중한,김대준,변준석,최빈혜,Hur, Jin-Il,Cho, Dong-Hee,Kim, Dong-Woo,Lim, Hee-Yong,Oh, Jung-Han,Kim, Dae-Jun,Byun, Joon-Seok,Choi, Bin-Hye 대한한방내과학회 2005 大韓韓方內科學會誌 Vol.26 No.2

This study was designed to evaluate the effects of the oriental medicine(Sojeockjeongwonsan) on a Jeock-Jeung patient. The clinical data was analyzed on a patient with Jeock-Jeung, deemed due to Gangiulgyul(肝氣鬱結) and Junggiheoyak(正氣虛弱). The patient’s main symptoms were abdominal pain and abdominal mass. The patient was admitted to Dae-Gu Hanny University Dae-Gu Oriental Medicine Hospital. Clinical symptoms, including abdominal pain, abdominal mass and general condition, improved after treatment. This study suggests that Sojeockjeongwonsan is significantly effective in treatment of a Jeock-Jeung.

熱 및 破碎 履歷이 NdFeB 永久磁石의 磁氣的 特性에 미치는 影響

한함윤,김대수 서울産業大學校 1993 논문집 Vol.37 No.1

The micro-structure and magnetic properties of magnetic materials of Nd-Fe-B system has been investigated under the various conditions of heat treatment. It is found that the homogenized ingot exhibit larger grains and equilibrium magnetic phase, higher coercivity compared to the rapidly-quenched one. It also shows the fine micro-structure as well as the soft magnetic phase, which is undesirable to the permanent magnet, such as Fe and NdFe₄B₄, etc. From the series of X-ray diffraction works it is known that the sintered magnet processed from the rapidly-quenched alloy shows the higher degree of crystal orientation toward the c-axis. Sulfur addition on NdFeB alloy has the effect of increasing the residual magnetic flux density due to the enhanced alignment during the process of magnetic-field-pressing.

정사각튜브의 좌굴영역에 관한 실험적 연구

韓秉基,安大植,朴鳳賢,車正一 弘益大學校 科學技術硏究所 1996 科學技術硏究論文集 Vol.7 No.1

An experimental study is presented on the local and overall buckling of the square tubes made of mild steel. A total of 150 square tubes were axially loaded in quasi static loading condition. Three kinds of specimens were chosen according to the discrepancy of thickness to width. Based on th test results, a new domain for distinction of overall and local buckling is suggested on the square tube. It is different from that of the column. A experimental equation of the overall buckling is suggested.

플라톤과 고대 그리스의 수학교육

한대희 청주교육대학교 과학교육연구소 2001 科學과 數學敎育論文集 Vol.22 No.-

In this paper, we reviewed the Ancient Greek mathematics education in order to discuss the aim of mathematics education. For most of Western cultural history, mathematics enjoyed a unique image, and a consequent prestige. Those perceptions were shaped by the achievement and outlook of ancient Greece, which saw in mathematics both a particular insight into the substance of "reality" and an unparalleled certainty of reasoning and conclusions. In light of the history of mathematics, we discussed Platonism as a philosophical basis of the traditional mathematics teaching. This has been concerned with teaching Euclid's "Elements" since ancient Greece. And we discussed the relationship between mathematics and a humanities form of education in the context of the traditional thought.

稅務調整에 관한 硏究

韓大奎 홍익대학교 경영연구소 1995 경영연구 Vol.20 No.-

하악골 후방이동시 중안면부 연조직의 변화양상에 대한 임상통계학적 연구

한대희,김수남,민승기,김태성,성헌모 대한악안면성형재건외과학회 2000 Maxillofacial Plastic Reconstructive Surgery Vol.22 No.3

Prediction of the soft tissue changes following hard tissue movement is very important from the esthetic view point for patients who have orthognathic surgery. There are many cephalometric analysis of facial bone and soft tissue on the lower lip and chin region but few soft tissue analysis on the midface after mandibular setback surgery. This study was performed to obtain whether the mandibular posterior movement has influence on the midface and the predictable ratio of post-operative measurement values of the soft tissue changes following mandibular setback surgery. Fifteen patients (8 males and 7 females) who had undergone mandibular setback surgery were selected and analyzed the soft tissue movement on the upper lip and the cheek region. Post-operative changes of the soft tissue measurements after mandibular surgery were examined on pre- and post-operative cephalo-metrics and the ratio of changes were analyzed after drawing the reference line on the face with the barium sulfate solution. The reference lines were perpendicular to the intercanthal line from infraorbital foramen and lateral canthus. The results obtained were as follows : 1.There were tendancy of anterior movement of soft tissue adjacent the nose after mandibular surgery 2.There were incerased tendancy of the amount of anterior movement from the nasal crease to the cheek region. 3.The amount of anterior movement of the soft tissue was larger below the palatal plane compared with above the palatal plane in the cheek region. 4.The upper lip length was increased and moved posterior direction after mandibular setback surgery 5.The lower lip was moved posterior direction by posterior movement of the mandibular structure 6.Soft tissue of the midface around the nose moved anterior direction after mandibular setback surgery but there was no correlation between the amount of mandibular setback and the amount of the soft tissue changes

길이진동을 이용하는 PZT계 압전 세라믹 공진자의 온도안정성에 관한 연구

한성훈,임대관,이개명 濟州大學校 産業技術硏究所 1999 산업기술연구소논문집 Vol.10 No.2

The piezoelectric ceramic resonator using length extensional vibration rather than contour extensional vibration in terms of the size is suitable for personal portable communication. In this paper, the ceramics of the six compositions, Pb(Zr_(x)Ti_(1-x))O_(3) + y[wt%]Cr_(2)O_(3) in which x = 0.56(rhombohedral phase). 0.53 (morphotrophic phase). 0.50(tetragonal phase) and y = 0.3 in respective x were fabricated. Temperature stability of length extensional vibration mode of those specimens was investigated. Both ceramic resonators of the composition with x=0.56. y=0 and the composition with 0.53. y=0.3 had better temperature stability frequency than the others, and thermal aging could improve temperature stability in only them.

재생 Al₂O₃분말을 이용한 Al₂O₃세라믹스의 소결 특성 연구

한상목,신대용 강원대학교 석재복합신소재제품연구센터 2001 석재연 논문집 Vol.6 No.-

Al2O3 세라믹스의 재활용을 위한 소결거동을 조사하기 위하여 재생 Al2O3 분말의 첨가량, 입자크기 및 소결온도에 따른 시편의 물리ㆍ기계적 특성을 측정하였다. 1,650℃에서 소결한 순수 Al2O3 시편을 급랭에 의하여 500㎛ 정도의 입자로 파쇄한 후, 자동유발을 이용하여 40㎛ 전ㆍ후로 분쇄하였다. 분쇄한 Al2O3 분말과 순수한 Al2O3 분말을 적정비로 혼합 후, 재소결에 의하여 제조한 Al2O3 세라믹스의 재생 Al2O3 분말의 첨가량, 입자 크기 및 소결온도에 따른 시편의 밀도 흡수율, 기공률, 3점곡강도 및 SEM 분석을 행하였다. 재생 Al2O3 분말의 첨가량이 증가함에 따라 시편 내에 존재한 기공에 의하여 밀도와 3점곡강도는 감소하였으나, 1,650℃에서 소결한 시편의 3점곡강도는 200 MPa 이상으로 구조용재료로 사용이 가능하였다. 또한, 재생 Al2O3 세라믹스 100wt%의 유리분말을 첨가하요 1,650℃에서 소결한 시편은 첨가한 유리분말의 고온용융에 의하여 생성한 액상에 의하여 물리ㆍ기계적 성질은 감소하였다. The sintering behavior of the Al2O3 composites for recycling Al2O3 powder was investigated as a function of the recycling Al2O3 powder and particle size with respect to physical and mechanical properties. Pure Al2O3 specimen was fabricated by sintering and was crushed into powder under 40㎛ in particle size by thermal shock treatment and automatic mortar crushing. Then, the crushed Al2O3 powder was mixed with pure Al2O3 powder, and the mixture was subjected to re-sintering to reuse Al2O3 composites. The reclaimed Al2O3 specimen were investigated by 3-point bending strength and SEM observation of microstructure. Density and 3-point bending strength of the reclaimed Al2O3 composites decreased as the addition amounts of recycled Al2O3 powder increased. The average 3-point bending strength of specimens heated at 1,650℃ were over 200 MPa. SEM observation indicated that pore distribution was inhomogeneous and pores were still resided in specimen, Pores, consequently, formed cracks which markedly decreased bending strength. Futhermore, 10wt% glass containing reused Al2O3 specimens were decreased physical and mechanical properties, so called over-sintering behavior.