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혼수상태의 외상환자에서 초음파를 이용한 흉부 및 복부손상의 진단
임경수,이강현,이진웅,이부수,황성오,유수영,강성준 대한응급의학회 1995 대한응급의학회지 Vol.6 No.1
The need for rapid diagnosis and treatment of life-threatening thoracic and intra-abdominal injury result in controversy over the appropriate triage of unconscious blunt trauma patients. To aid in early decisions for these patients, a prospective analysis of 98 patients with glasgow coma scale(GCS) scores≤8 was undertaken. Although intra-thoracic and intra-abdominal injuries were frequently identified based on systolic blood ressure, the use of clinical signs alone resulted in more missed injuries than did using the emergency ultrasonography. In normotensive patients(n=34), intra-thoracic injuries was identified in one patient(2.9%), and intra-abdominal injuries were in 7 patients(20.6%). In shock(systolic blood pressure<90mmHg) Pa-tients(n=64), thoracic injuries and intra-abdominal injuries were diagnosed in 8(12.5%) and 27 patients(42.3%), thoracic and abdominal combined injuries were identified in 11 patients(17.2%). The sensitivity, specificity, and accuracy of emergency ultrasonography were 96.3%, 91.7%, 94.9%. This study suggests that all unconscious trauma patients undergo immediate emergency ultrasonography to prevent missing life-threatening injuries.
대용량 텍스트 데이터베이스를 위한 효율적인 2단계 합성 요약 화일 방법
유재수(Yoo Jae Soo),강형일(Kang Hyung Il) 한국정보처리학회 1997 정보처리학회논문지 Vol.4 No.4
In this paper, we propose a two-level hybrid signature file method(THM) to efficiently deal with large text database that use a term discrimination concept. In addition, we apply Yoo's clustering scheme to the two-level hybrid signature file method. The clustering scheme groups similar signatures together according to the similarity of the highly discriminatory terms so that we may achieve better performance on retrieval. The space-time analytical model of the proposed two-level hybrid method is provided. Based on the analytical model and experiments, we compare it with the existing methods, i.e., the bit-sliced method(BM), the two-level method(TM), and the hybrid method(HM). As a result, we show that THM achieves the best retrieval performance in a large database with 100,000 records when the number of matching records is less than 160.
金熙鍾,柳又秀,金佳鉉,申東守,韓健模,全裕燦 東亞大學校 大學院 1984 大學院論文集 Vol.9 No.-
This paper is a study on relation between run-off ratio and antecedent discharge, run-off ratio and antecedent discharge per unit area, antecedent discharge and antecedent precipitation, by the data from the five major river basins in Korea and the small river basins in Pusan. The Nak-Dong rivers(An-Dong upper stream) f=0.4780+0.0124 ln qA r=0.99 qA=0.3368e0.1101R r=0.99 f=0.5793+0.0146 ln(qA/A) r=0.99 The Nak-Dong rivers except Ga-song station f=0.2017-0.0840 ln qA r=0.75 f=0.7012+0.0750 ln(aA/A) r=0.71 The Han rivers f=-0.0035+01267 on qA r=0.75 f=1.1311+0.1263 ln(qA/A) r=0.71 L=302.9064-43.8490 ln qA r=0.84 The Geun rivers(Mu-sin Cheon) f=0.295+0.1823 ln qA r=0.93 f=0.8417+0.1823 ln(qA/A) r=0.93 L=40.0456+62.0346 ln qA r=0.94 The Yeong-san rivers f=0.3766+0.0598 ln qA r=0.79 f=0.8084+0.0599 ln(qA/A) r=0.79 The Seom-jin rivers f=-1.3875+0.6505 ln qA r=0.92 f=2.1633+0.3465 ln(qA/A) r=0.76 Small river basin in Pusan f=0.3635+0.1120 ln qA r=0.87
유근종,한진우,김수태 창원대학교 산업기술연구소 2001 産技硏論文集 Vol.15 No.-
LES is applied to analyze transient turbulent flows which may cause thermal stripping. The LES is formulated based on Sub-Grid k model. For evaluating performance of the LES, two test cases of vertical water jet flow and parallel sodium jet flow are selected. Through the analysis, the LES confirms that it has proper ability to predict time dependent flow variables such as magnitude of temperature fluctuation and its frequency. For the better prediction, however, the LES is required to be improved through further evaluation of various SGS models and implementation of temperature SGS model into its energy equation.
유영식,채수권,권우택,김남천 서울보건대학 1996 서울보건대학 부설 한국보건과학연구소 논문집 Vol.3 No.1
한강수계 팔당댐 유입 하천수를 대상으로, 다환방향족 탄화수소를 선택적으로 유리하게 흡착하는 blue-rayon을 이용하는 현수법 및 column법으로 유기물을 흡착 추출하여, Salmonella typhimurium TA 98 및 TA 100에서의 돌연변이원성을 검색한 결과 다음과 같았다. 1. 흡착 유기물량은 8월이 11월에 비하여 약 1.7배 높았고, 현수법과 column법에서의 차는 없었다. 2. TA 100 균주에서 돌연변이원성은 나타나지 않았다. 3. TA 98균주에서의 돌연변이원성은, S-9mix 첨가의 계가 S-9mix비첨가의 계보다 높았고, 11월이 8월보다 높게 나타났다. Column법이 현수법에 비하여 돌연변이원성은 예민하게 검출되었다. In order to evaluate the toxic effect of organic pollutants in aquatic environments, organic substances extracted from blue-rayon adsorbates in Kyimgan River with the hanging and column methods were assayed by the Ames Salmonella mutagenicity test. Amounts of organic extracts adsorbed with the blue-rayon hanging method and the blue-rayon column method were similar. The mutagenicity toward TA 100 strain was not shown. The mutagenicity toward TA 98 with S-9mix was higher than that without S-9mix. For the quantitative concentration of polycyclic aromatic hydrocarbons in water, it was shown that the blue-rayon column method was more efficient than the blue-rayon hanging method.