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박화규(Hwa-Kyu Park),채규열(Kyu-Yeol Chae),구한서(Han-Suh Koo),이윤석(Yun-Seok Lee),정창성(Chang-Sung Jeong) 한국정보과학회 2001 한국정보과학회 학술발표논문집 Vol.28 No.2Ⅱ
레이져를 이용한 마킹(marking) 시스템은 미러(mirror)를 움직이는 XY Scanner안 모터의 Thermal drift로 인한 오차와 laser 오류에 의해 마킹의 불량을 초래하게 된다. 따라서, 이 마킹 불량을 검사하기 위해 마킹 시스템에는 비젼(Vision)을 이용한 검사 장비가 탑재된다. 현재 웨이퍼 마킹기나 다른 마킹기의 비젼시스템은 후검사(post vision) 시스템을 도입하고 있다. 하지만, 후검사 시스템의 경우 마킹이 잘못되었을 때, 바로 마킹을 중지하지 못하고 적어도 한 단위 마킹(tray, 웨이퍼, Strip, PCB 등등)을 망치게 되고, 만일 마킹 대상물이 고가인 경우 상당한 금액의 손실을 가져오는 단점을 가지고 있다. 이러한 단점을 보완하기 위해 본 논문에서는 CPVS(Concurrent Processing Vision System)라는 시스템을 구현하였다. 이 시스템은 마킹과 마킹 품질검사를 동시에 병행함으로써 마킹이 잘못되었을 때 마킹을 중단하게 되어 더 이상의 손실이 나지 않게 하고 후처리 검사 시스템으로의 이송과정을 생략함으로써 processing time을 줄이고, 생산성을 높인다는 장점을 가지게 된다. 이 시스템의 구현은 Visual C++의 MFC 라이브러리를 사용한 MDI구조로 구현하였다.
김수남,이동근,민승기,오승환,최문기,박화규,Kim, Soo-Nam,Lee, Dong-Keun,Min, Seung-Ki,Oh, Sung-Hwan,Choi, Moon-Gi,Park, Hwa-Kyu 대한악안면성형재건외과학회 1999 Maxillofacial Plastic Reconstructive Surgery Vol.21 No.3
This study was aimed at furnishing the data of Naso-orbito-ethmoidal fractures and aiding treatmenting Naso-orbito-ethmoidal fractures A 5-year review of Naso-orbito-ethmoidal fractures and concomitant injuries is presented. The patients were treated in the Dept. of Oral and Maxillofacial Surgery of Wankwang University Hospital from Jan. 1, 1993 to Dec. 31, 1997. The results were as followes: Male predominated over female by a ratio of 4.6 : 1. The most common reasons is traffic accident(88.2%). The elapsed time from injury to operation is average 9.2 days, and the mean admission days were 79 days and removal of plates were average 217.3 days. The most associated facial bone fractures is Zygomatico-Maxillary complex fracture(20%). Associated injuries were neurologic injury(29.4%), orthopedic injury(23.5%), opthalmologic injury(17.6%), body injury(5.8%), neuropsychologic injury(5.8%) and otolaryngologic injury(5.8%) in this order. The most injured teeth were upper and lower incisors. The intubation methods for surgery were orotracheal(29.57%), submental(29.5%), and nasotracheal technique(41%). Most patients had complications, that were post-traumatic telecanthus, nasal depression, scar formation. This results suggest that early diagnosis and treatment is prerequisits to satisfactory result. Aggressive management of NOE fracture with direct or bicoronal exposure with aid of CT is now an accepted norm.
Cushing s syndrome을 동반한 Ludwig s angina 환자에 대한 치험례 : 증례보고
이동근(Dong Keun Lee),김용완(Yong Woan Kim),이은영(Eun Young Lee),박화규(Hwa Kyu Park) 대한구강악안면외과학회 1998 대한구강악안면외과학회지 Vol.24 No.4
Ludwig s angina is a serious and potentially life threatening infectious disease involving all of the submental, submandibular, and sublingual space bilaterally. It is characterized by severe swelling and broad-like induration of the tissues in the submandibular region and elevation of the tongue and floor of mouth with partial immobilization of these structures. A common cause of Cushing s disease is an iatrogenic problem related to chronic administration of either ACTH or glucocorticoids. Patients who administrated glucocorticoids altered response infection and wound healing. More important, many patients who are taking or have been taken glucocorticoids have risk of developing acute adrenal insufficiency (adrenal crisis) when place in stressful situation. The treatment of infections in Cushing s syndrome are reduction of number of microbes through the use of appropriated antimicrobial agents and proper surgical drainage and appropriated airway management and proper steroids therapy that increased administration of glucocorticoids. In this paper, we report a rare case of Ludwig s angina with Cushing s syndrome. A 45-years old women was referred to our clinic in November 1996 for treatment of infetious disease. Clinical examination of this patient showed a painful swelling of submental space, elevation of tongue and difficulty of respiration or Moon Face , Bufallo hump , striae of abdomen and ecchymosis of extremities. We treated through the quickly airway management using blind oroendotracheal intubation, antimicrobial injection of large quantity, increased administration of glucocorticoids and proper surgical drainage. And We aquired satisfactory result.
낭종 적출후 악골 결손부 치유에 관한 동종골 이식 효과에 관한 연구
이동근,박화규,권경환,강문정,신기영,민승기,성헌모 大韓顎顔面成形再建外科學會 1999 Maxillofacial Plastic Reconstructive Surgery Vol.21 No.4
This study was aimed to suggest to better treatment method of jaw cyst that the maximum diameter was wider than 3cm, using different treatment and clinical and radiographic result. We divided the 60 patients into three groups, group A(20 patients) were treated with cyst enucleation and Decalcified Freeze-Dried Allogeneic Bone(DFDB) graft, group B(20 patients) were treated with cyst enucleation and autogenous bone graft, group C(20 patients) were treated with only cyst enucleation. Each group was evaluated with panramic radiograph and clinical sign & symptom at pre-op and post-op(immediate, 6, 12, 24, 36 month). Bone density was evaluated with disital densitometer. The result was as follows : 1. Post-Op infection was higher in group C(4 pts.) than in group A(1 pt.) and B(1 pt.) 2. Post-Op gingival recession was higher in group C(3 Pts.) than in group A(1 pt.) and B(1 pt.) 3. Anatomic distortion was higher in group C(3 Pt.) than in group A(1 Pt.), and B(1 pt.) 4. reoperation was done in two patients who were in group C 5. There were donor site morbidity in two patients 6. there was no significant difference between group A and B in their bony density in their follow up period(p>0.05). 7. There were significant differences between group A, B and group C in their bony density until post-op 24 months but a little differences at post-op 36 months(P<0.01)