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고광옥,최용,정해일,윤회상 대한신장학회 1984 Kidney Research and Clinical Practice Vol.3 No.1
There had been total 100 cases of urinary tract infection who had been admitted to the Ward of Pediatrics, Seoul National University Hospital from Jan. 1980 to Dec. 1983, and they held 1. 21 % of total pediatric inpatiente during the same period. I Among these, 50 patients,were neonates or infants and in these age groups more than S times of male preponderance(M:F=38: 12) was observed, but in the age groups of over year female pre- ponderance(M:F=22: 28) was observed with resulting total male to female ratio of 60 : 40. In 55 cases, both pyuria and significant bacte- riuria were documented. Among clinical findings of total patients, fever, G-I sy ptoms, irritability, CVA tenderness, dysuria, urinary frequency and dehydration were noted in th order of decreasing frequency, and specific urinary symptoms such as CVA tenderness, dysuria and urinary frequency were more frequent in older age groups. Anemia(Hgb 10.0 gm/dl$gt;) and leukocytosie (WBC count in CBC 10,000$lt;) were noted in 34 and in 71 Cases respectively, and these findings were less frequent in older age groups. Among urinalysis findings, pyuria, hematuria, proteinuria and positive nitrite reaction were noted in 89, 31, 47 and 25 cases respectively, and elevated ESR(2p mm/hrg), reactive serum CRP, elevated serum creatinine level(1.2mg/dl $lt;) and elevated LDH isoensyme type 4 and/or 5 in urine were notad in 88.9% 88.9%, 11.0% and 50.0% respectively. Abnormal findings of IVP(intravenous pyelography) were noted in 37.7%' with a leading one of hydronephrosis and/or hydroureter, and VUR(vesi- coureteral reflux) was noted in 47.2% of cases with VCU(voiding cystourethrography) and the degree of reflux was varJable. In 4 cases among those with VUR, long-term antibiotic therap@y was done and improvement in reflux was noted in cases. Finally, E. coli and Klebsiella species were the most common strains isolated in urine culture. In those without G-U tract abnormalites these strains held about 80%, and in those with G-U tract abnormalities they held about 50% with resulting total frequency of about 70 %.
축냉재 포접화합물의 열물성에 관한 실험적 연구 (IV) : 온도 변화 Changing of Temperature
고광옥,임재경,김창오,김진홍,정낙규,하옥남 조선대학교 에너지.자원신기술연구소 2000 에너지·자원신기술연구소 논문지 Vol.22 No.2
The objective of this paper is to investingate the thermal properties of TMA-clathrate applicable to cold storage system for building air-conditioning in order to use energy reasonably. Especially, the test tube experiments are performed by comparing and to analyzing the temperature of phase change, specific heat and subcooling characteristic according to the variation of concentrations and temperature of heat source in TMA clathrate. The result are summarized as follows; 1) temperature of phase change is dropped as the temperature of heat source is lower 2) specific heat of TMA-clathrate is about 24~95 % of pure-water 3) subcooling is smalled as the temperature of heat source is lower. Thus, it apears that TMA-clathrate has thermal properties as the cold storage medium for residential air-conditioning
SSD 기반 시스템에서 셔플 과정 최적화를 통한 하둡 맵리듀스의 처리속도 향상 기법
고광옥(Gwangok Go),박대동(Daedong Park),홍성수(Seongsoo Hong) 대한전자공학회 2015 대한전자공학회 학술대회 Vol.2015 No.6
MapReduce is a programming model widely used for processing big data in cloud datacenter. It is composed of Map, Shuffle and Reduce phases. Hadoop MapReduce is one of the most popular framework implementing MapReduce. During Shuffle phase, Hadoop MapReduce performs an excessive number of disk I/O operations and the transmission of large data. This accounts for about 40% of total data processing time. In order to solve these problems, we propose a new shuffle mechanism using the characteristics of SSD. This mechanism consists of (1) data address based sorting, (2) data address based merging and (3) early data transmission before Map phase completion. In order to demonstrate the effectiveness of our approach, we have implemented this mechanism into Hadoop MapReduce 1.2.1. Our experiments show that the proposed mechanism reduces the job completion time up to 5% compared to that of the legacy Hadoop MapReduce.
축냉재 포접화합물의 열물성에 관한 실험적 연구(Ⅲ) : 충전량 변화 Variations of Charging Conditions
임재경,고광옥,김진흥,정낙규,하옥남 朝鮮大學校 機械技術硏究所 2000 機械技術硏究 Vol.3 No.1
The objective of this paper is to investigate the thermal properties of TMA-clathrate compound in order to applicate cold storage system to residential air-conditioning. Especially, the test tube experiments are performed by comparing and analyzing the concentration of TMA-clathrate compound, the temperature of heat source, and the phase change temperature, specific heat and subcooling characteristics on the point of the variation of charge capacity. The results are summarized as follows; 1) When the temperature of heat source is -15℃, the stability of the thermal properties is appeared high in the whole experiments 2) The effect of subcooling suppression is improved around 0.6℃ when the temperature of heat source is -15℃, while the teemperature of subcooling is about 2.2℃ when the temperature of heat source is -10℃. Especially, it did not almost present any subcooling in the 26wt% of the 5g and the 25wt%, 30wt% of the 10g. Thus, we concluded that TMA-clathrate compound has thermal properties as the cold storage medium for residential air-conditioning.
건강도시지수를 위한 건강도시지표의 타당성과 자료생산 가능성
강은정 ( Eunjeong Kang ),고광옥 ( Kwang Wook Koh ),김건엽 ( Keon Yeop Kim ),김은정 ( Eun Jung Kim ),김복미 ( Bok Mi Kim ) 대한보건협회 2017 대한보건연구 Vol.43 No.2
연구목적 : 본 연구의 목적은 건강도시지수 개발을 위해 필요한 건강도시지표를 개발하고 그들의 타당성과 자료가용성을 확인하는 것이다. 연구방법 : 문헌고찰을 통해 기존의 국내 및 국외의 건강도시지표들을 수집하였다. 총 72개의 지표들을 11개 영역으로 구분하였다. 2016년 9월 19일부터 10월 7일까지 16명의 건강도시 실무자 및 전문가를 대상으로 이메일을 통한 자가기입식 설문조사를 실시하였다. 조사를 통해 각 지표의 정책관련성, 액면타당성, 내용타당성, 그리고 자료가용성을 5점 척도로 평가하였다. 연구결과 : 정책관련성, 액면타당성, 내용타당성, 자료가용성에 대한 모든 72개 지표들의 평균점수는 각각 3.96, 3.87, 3.84, 3.88이었다. 몇 개를 제외한 모든 지표들의 평균이 3점을 넘었다. 네 가지 평가기준 모두에서 구조와 과정 지표들과 함께 결과 영역 중 건강행태 및 건강결과 지표들이 물리적, 사회적, 경제적 환경 및 보건의료자원 및 서비스 지표들보다 더 높은 점수를 얻었다. 결론 : 건강도시지수를 위해 개발된 건강도시지표들은 타당하고 자료가용성이 만족스러운 것으로 나타났다. Objective: The purpose of the study was to develop a comprehensive set of Healthy City indicators to be used to develop a Healthy City index and to examine their validity and data availability. Methods: Previous domestic and international Healthy City indicators were collected from literature review. Seventy two indicators categorized in 11 domains were finally selected. A self-administered survey was conducted between September, 19 and October 7 in 2016 via e-mail among 16 experts or practitioners in Healthy City. They rated policy relevance, face validity, content validity, and data availability of each indicator based on its pre-described definition on the 5 Likert scale. Results: The average scores for policy relevance, face validity, content validity, and data availability across 72 indicators were 3.96, 3.87, 3.84, 3.88, respectively. All the indicators were rated over 3 on average except a few indicators. In all the four evaluation criteria, structure and process indicators as well as the indicators for health behavior and health outcome were rated higher than those indicators for physical, social, and economic environments and healthcare resources and services. Conclusion: The Healthy City indicators developed for a Healthy City index were found to be valid and their data availability were satisfactory.