Rapid Prototyping 모델을 이용한 골삭제을 위한 외과적 지표 : 섬유성 골이형성증 치료를 위한 기술적 제안

김운규 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.4

Bone shaving for surgical correction is general method in facial asymmetrical patient with fibrous dysplasia. Therefore, decision of bone shaving amount on the preoperative planning is very difficult for improvement of ideal occlusal relationship and harmonious face. Preoperative planning of facial asymmetry with fibrous dysplasia is generally confirmed by the simulation surggery based on evaluation of clinical examination, radiographic analysis and analysis of facial study model. However, the accurate postoperative results can not be predicted by this method. By using the computed tomography based RP(rapid prototyping) model, simulation of facial skeleton can be duplicated and 3-dimensional simmulation surgery can be perfomed. After fabrication of postoperative study model by preoperactive bone shaving, preoperative and postoperactive surgical index was made by omnivaccum and clear acrylic resin. Amount of bone shaving is confirmed by superimposition of surgical index at the opertation. We performed the surgical correction of facial asymmetry patients with fibrous dysplasia using surgical index and prototyping model and obtained the favorable results.

후상치조신경 마취 후 발생된 복시 및 하직근 마비 : 발생기전에 관한 고찰

김운규 대한악안면성형재건외과학회 2001 Maxillofacial Plastic Reconstructive Surgery Vol.23 No.5

A unhealthy 58-year-old male patient required extraction of left upper second molar due to advanced periodontitis. Lidocaine contained 1 : 100000 epinephrine for left posterior superior alveolar nerve block was administered in the mucobuccal fold above the second molar to be treated at the local private dental clinic. After four hours of posterior superior alveolar block anesthesia, patient feeled double vision and discomfort of eyeball movement, At next day, he complained difficulty of left eyeball movement, vertigo and diplopia. He was referred to our department via local clinic and department of ophthalomology of our hospital. He was treated by medication and eyeball exercise, and then follow up check. The double vision and medial rectus muscle palsy disappeared patially after 2 months of block anesthesia. We described herein an ocular complication of diplopia and inferior rectus muscle palsy after posterior superior alveolar nerve block for extraction of left upper second molar, and review the cause or origin of this case. The autonomic nervous system is presented as the logical basis for the untoward systems of ophthalmologic sign likely to diplopia and inferior rectus muscle palsy, rather then simple circulation of anesthetic solution in the vascular network.

智異山 山林鳥類의 捿息實態에 關한 硏究

咸奎晃,白雲起,兪在平,崔在植 경남대학교 환경문제연구소 1992 환경연구 Vol.14 No.-

For the purpose of contribution to wild birds protection, distribution characteristics and ecological breeding habits were surveyed in Mt. Chiri from October 1989 to October 1991 by the use of the nestboxes installed in four study sites by the altitude. 1. The census of birds of 80 species, 27 family, 9 order of birds recorded in Mt. Chiri. 2. In the inhabitation structure of birds by altitude, Fringilla montifringilla were the dominance (18.29%) among the survey area. 3. The nestboxes(66.5%) were mainly used by the smal birds, Parus sp. and sitta europαea. 4. The utilization rate of tile nestboxes were showed 64% at 500m, 78% at 900m, 76% at 1,450m, 48% at 1,750m above the altitude, respectively. 5. The breeding rates of birds in the nestboxes were showed from 6% to 46% by altitude. Parus varius were the highest breeding species in the surveyed area. 6. Food items of the chicks of the 5 species collected by the coiler method were animal matters : 91.3% of the food were forest insects such as Phalera asiimilis and Pleuroptya batteata except 8.7% of spiders.

이진 영상의 사진 트리 구현을 위한 개선된 트리 표현

우진운,김규억 단국대학교 1998 論文集 Vol.32 No.-

Quadtree, which is a hierarchical data structure, is a very important data structure to represent binary images. Among the ways to store a quadtree, the tree representation is fast in the image processing but it takes large storage. However the linear quadtree representation is efficient to save space but it takes more time in processing images, comparing the tree representation. In this paper, we propose an improved tree representation that is efficient in storage as well as fast in processing time. We experiment our representation on the memory size required by the quadtree representations to measure the memory efficiency of the improved tree representation. Also we apply quadtree representations to the labeling problem of binary images.

중·고등학생들의 본드남용 실태조사

윤운상,홍관이,노성규,백혜자,주왕기 江原大學校附設體力硏究所 1980 江原大學校附設體育科學硏究所論文集 Vol.- No.5

In the light of recent evidence that the abuse of inhalants is increasing among the Korean youth. A comprehensive inhalants use questionnaire was administered to a sample of 790 Kangweon provincial high school(junior and senior) seniors to determine whether or not a similar trend was evident among this students. Results indicated that 13.2% of the respondents report having tried inhalants in their lifetime, and daily use was reported by 4% among users. Somewhat higher propotions of males(15.9%) than females(10.4%), and TAT※※ high school students(17.2%) than academic high school students(12.6%) are involved in inhalants use. Inhalants users, markedly are more involved in other drugs use and they are dis-satisfied with self and their living environments. 74.0 percent of the students used inhalants for the curiosity.

最近 3年間 本敎室에서 經驗한 腫瘍 253例에 對한 臨床病理組織學的 考察

李揆鶴,高永春,李廷鎭,朴鍾雲,李鍾元,林鍾福,林春悅,朴順道 최신의학사 1964 最新醫學 Vol.7 No.4

교량의 실시간 거동 모니터링을 위한 GPS의 적용

박운용,정성모,곽두호,이흥규 東亞大學校 大學院 1999 大學院論文集 Vol.24 No.-

Real Time Kinematic GPS will allow a multitude of monitoring, navigation and engineering applications. Applications inclued real time deformation and movement monitoring and real time automated plant control. In a low dynamic environment, with a short baseline length, it is possible to position a roving receiver to an approximate accuracy of less than 5mm within a few seconds of thestart of the ambiguity. One Engineering application is the monitoring of the movement of cable suspension bridges. Such structures are capable of movements of up to a few meters under adverse wind conditions or heavy traffic loads. The use of relative OTF positioing at strategic points upon the bridge would allow close monitoring of the bridge's movements and calculate deformation and long-term deterioration factors for the bridge. Future bridge designs and traffic management schemes could also benefit from the monitoring system.

패턴分類에 依한 字素抽出 알고리즘에 關한 硏究

朴圭泰,金商雲 연세대학교 산업기술연구소 1986 논문집 Vol.18 No.1

In this paper, an algorithm is described for phoneme extractions of hangeul by pattern classification. At first, the input patterns are classified into 6 character forms using a vertical vowel(Vv), horizontal vowel(Vh), and last consonant(Cl)as parameters. Next the formalized pattern is decomposed into discriminate phonemes according to positional and structural information of the pattern form. As majority of hangeul patterns is composed of discriminate phonemes. there is no need to take the phoneme extraction for all input patterns. The speed of recognition is improved and the result classified pattern is verified by centroid matching technique. The algorithm is implemented with C language and tested through a IBM PC. The experimental results for the characters used in a textbook show the extraction rate of 91% and classification rate of 98.7%.

Cu(Ⅱ) 이온과 질소-황을 가진 포단드와의 착물 형성에 관한 연구

최규성,정징운 慶南大學校 附設 基礎科學硏究所 1996 硏究論文集 Vol.8 No.-

The stability constants, enthalpy, and entropy changes of complexation of Cu(Ⅱ) ion with sulfur-containing podand ligands such as tri(phenylthio-2-ethyl)amine(Podand Ⅰ), tetra(phenylthio-2-ethyl)ethylendiamine (Podand Ⅱ) have been determined by uv-vis spectrophotometer in 95% MeOH at various temperature. From the results, the followings have been obtained. Cu(Ⅱ) ion forms a 1:1 complex with these ligands, the order of stability constants and enthaply changes is Podand Ⅰ <Podand Ⅱ, entropy changes is Podand Ⅰ> Podand Ⅱ.

파라콰트 중독에서의 항산화치료

권운용,조유환,송형곤,김명천,이중의,서길준,윤여규 대한응급의학회 2001 대한응급의학회지 Vol.12 No.4

Background: Paraquat causes severe tissue toxicity when ingested, but has no effective treatment modality. We have shown that high dose vitamin C has effective antioxidant activities against the paraquat intoxication in a previous animal experiment. This study was designed to evaluate the effect of antioxidant therapy with high dose vitamin C and vitamin E in human cases of paraquat intoxication. Methods: From August 1999 to August 2001, 19 paraquat intoxication patients who visited the emergency department of the Seoul National University Hospital and the Kyounghee University Hospital were enrolled to this study. They were devided into two groups, a control group(9 patients) and a study group(10 patients). The control group received only conservative managements including gastro-intestinal decontaminati-on. The study group received conservative managements plus the antioxidant therapy which was composed of vitamin C 24 gm/day intravenously and 20 gm/day orally, and vitamin E 1.6 gm/day orally. Results: In the study group, 5 of 10 patients(50%) survived, but all patients of the control group died(p=0.003). There were no significant differences in age, sex, and usage of gastric lavage and activated charcoal between the two groups. Difference in ingested amount of paraquat between the two groups could not be analyzed due to the inexact and subjective measuring methods based on patients' histories. Conclusion: Antioxidant therapy with high dose vitamin C and vitamin E is effective in vival rate in paraquat intoxicated patients.