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만성뇌경막하 혈종에서의 섬유소분해산물(FDP's)과 임상소견과의 상관관계
최문철,김한규,조경기 대한신경외과학회 1985 Journal of Korean neurosurgical society Vol.14 No.1
Twenty-two patients with chronic subdural hematoma were treated with simple closed drainage between July 1983 and June 1984. Fibrinogen and fibrinogen degradation products (FDP's) were measured in the hematoma fluid. The relationship of FDP's to the time interval from trauma to operation, to the volume of hematoma fluid, to the duration of postoperative drainage, and to the expansion rate of the brain were investigated. The results were as follows : 1) Significantly high values of FDP's and relative low values of fibrinogen were observed in the hematoma fluid. 2) Values of FDP's elicited had no relationship to the time interval from trauma to operation, to deusity on CT scan, nor to the expansion rate of the brain. 3) Values of FDP's showed a close relationship to the volume of the hematoma and to the duration of postoperative drainage.
수술로 치료한 뇌동맥류 167 예의 예후인자에 대한 임상적 고찰
최문철,조기홍,김한규,조경기 대한신경외과학회 1985 Journal of Korean neurosurgical society Vol.14 No.4
We reviewed 167 cases of surgically treated cerebral aneurysms among 246 angiographically confirmed patients to search for the prognostic factors during the period from January, 1975 to December, 1984. The prognostic factors are age, sex, hypertension, size of aneurysm, site of aneurysm, preoperative neurological state, vasospasm, intracranial hematoma, hydrocephalus, timing of operation, number of aneurysmal rupture, and multiple aneurysms. Among these, age, hypertension, size of aneurysm, preoperative neurological state, vasospasm, rebleeding, and multiple aneurysms had greater influence on the prognosis and the effect was greater from factor complex by additive action, rather than from one specific factor.
CUBRID RDBMS 상에서 병렬 질의 처리를 지원하는 분산 미들웨어 개발
최문철,조아라,윤민,김형일,장재우 한국정보과학회 2014 데이타베이스 연구 Vol.30 No.2
The wide spread of Internet services and SNS (Social Network Service) has produced a hughvolume of data, thus researches dealing with big data has gained significant attentions. NoSQL isfamous for big data processing since it allows agile processing of information on a massive scale. However, it has limitations that it does not satisfy ACID condition of database system and itprovides inefficient usability. Therefore, RDBMS has been spotlighted as a new wave of big dataprocessing. CUBRID SHARD is designed to provide distributed load balancing by allowingunlimited number of database shards stored in physical nodes. However, CUBRID does not supportefficient query processing over distributed data, so aggregate queries cannot be performed on theexisting CUBRID. To solve this problem, we CUBRID-based distributed middleware that supportsnot only parallel query processing, but also various aggregation query processing in distributeddata processing environments. 최근 급속도로 증가하는 인터넷 사용자 및 SNS의 급격한 확산으로 정보의 양이 기하급수적으로 증가하였으며, 따라서 빅데이터에 대한 연구가 활발히 이루어지고 있다. 빅데이터를 다루는 NoSQL에 대한 연구가 활발히 진행되고 있지만, 사용자 편의성과 데이터베이스의 ACID 조건을 만족하지 못하는 문제점이 존재한다. 따라서 RDBMS를 기반으로 빅데이터 처리를 수행하는 움직임이 활발해지고 있다. 이를 위한 대표적인 기법인CUBRID SHARD는 데이터베이스를 수평 분할하여 각기 다른 물리 노드에 Shard 단위로 데이터를 나누어서저장하여, 데이터의 분산 저장을 지원한다. 그러나 해당 기법은 질의의 완벽한 병렬 처리가 불가능하기 때문에, 한 클라이언트의 데이터베이스가 다수의 서버에 분산 저장되어 있는 경우 질의 집계 등 다수의 서버에서질의 처리를 수행하지 못하는 문제점이 존재한다. 따라서 본 논문에서는 분산 데이터 처리 환경에서 병렬 질의처리뿐만 아니라 다양한 집계질의 처리를 지원하는 CUBRID 기반 분산 미들웨어를 제안한다.
崔文澈,李祥來 大韓顎顔面 放射線學會 1984 Imaging Science in Dentistry Vol.14 No.1
The purpose of the present study is to offer the fundamental materials for the diagnosis of dentigerous cyst by analysis of the clinical and radiographic findings of these lesions. The subject for this study consisted 118 patients admitted to the Department of Oral Radiology, Kyung Hee University and Seoul National University from 1974 to 1983. Conclusions from this study were as follows; 1. There was a higher incidence in males (70.34%) than in females (29.66%), and the incidence was highest in the second and third decade (26.27%) with the same incidence. (Average age: 25 year) 2. There was a higher incidence in the maxillary teeth (66.10%) than in the mandibular teeth (33.90%) and the maxillary supernumerary tooth (45.76%) was the most frequently involved one. The mandibular third molar (16.10%) was next in order of frequency of involvement followed by maxillary canine (7.63%), mandibular second premolar (5.08%). 3. There was a greater incidence of the central type than the lateral type in the maxilla, while a higher incidence of the lateral type in the mandible. 4. There was a greater incidence of the smooth type (84.26%) than that of the scalloped type (15.74%) and a higher incidence of minor type (70.91%) than the major type (29.09%) in the displacement of associated tooth. 5. Root apices of teeth encompassed or approached by the cysts showed variable resorption in 68.47% of cases.