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한방의료기관에서 치료하는 환자의 의료이용분석 -외래 및 재원입원환자의 성, 연령, 지역별 분석을 중심으로-
최성용,신현규,박해모,이선동,Choi, Sung-Yong,Shin, Hyun-Kyu,Park, Hae-Mo,Lee, Sun-Dong 대한예방한의학회 2012 대한예방한의학회지 Vol.16 No.2
Objective : This study aimed to analyze the utilization of Korean Medicine clinics, and high-frequent diseases by sex, age, and region of outpatients and inpatients Methods : The data for this study were "Report on Usage Patterns of Korean Medicine Clinics" issued by the Ministry of Health and Welfare in 2008. Descriptive analysis and correspondence analysis were used to find the patterns of patient's utilization by sex, age and region Results : Diagnosis and examination methods mostly consisted of the pulse for diagnosis. Treatment methods consisted of acupuncture, medical herbs in package, and insurance extract powder. Fee for consultation was paid by Korean Medicine insurance. Usage increased when people's age was over 20 and climaxed among people who were in their 40s and 50s and decreased gradually afterwards. Also, there were differences between the sexes. There were differences in high-frequent diseases by regions, and in usage of Korean Medicine clinics according to sex and age. Conclusion : It was found that there were differences in usage and patterns of Korean Medicine Clinics according to sex, age, and region.
혼화재료의 치환에 따른 경량기포 콘크리트의 기초적 특성분석
최성용,신재경,정광복,한민철,한천구,Choi, Sung-Yong,Shin, Jae-Kyung,Jeong, Kwang-Bok,Han, Min-Cheol,Han, Cheon-Goo 한국건축시공학회 2007 한국건축시공학회지 Vol.7 No.2
This study investigated the fundamental properties of the lightweight foamed concrete depending on various admixtures, and the results were summarized as following. When 20% of cement kiln dust(CKD) and 0.002% of stabilizing agent were mixed to lightweight foamed concrete, it was necessary to use a superplasticizer because flowability was decreased. However, it could reduce sinking depth which were the extensive trouble of lightweight foamed concrete. Bulk density was divided into '0.4' and '0.5' grades on KS according to unit volume weight. The compressive strength was less than that of plain concrete when admixtures were applied, but the results exceeded the minimum strength of the each grades on KS. Totally, it is found that the combination of 20% of CKD and 0.002% of stabilizing agent makes it possible to reduce a sinking depth, recycle resources, and save cost when were mixed.
부산시내 지하생활권의 공기오염도와 온열인자에 관한 조사연구
최성용,문덕환,이종태,송인혁,이채언,이승민,Choi, Sung-Yong,Moon, Deog-Hwan,Lee, Jong-Tae,Song, In-Hyuk,Lee, Cha-Eun,Lee, Sung-Min 대한예방의학회 1994 Journal of Preventive Medicine and Public Health Vol.27 No.3
For the purpose of preparing the fundamental data on air pollution in underground shopping center and also contributing to the health improvement of residents, the authors measured the level of $SO_2,\;NO_2,\;TSP,\;CO,\;CO_2$ and also some related factors as air temperature, air movement, relative humidity and mean radiation temperature at inside and outside of underground shopping center in Pusan from January to February and from July to August 1994. The results were as follows : 1. The mean concentration of CO within the underground shopping center was $3.1{\pm}1.3ppm$ in winter and $2.1{\pm}0.9ppm$ in summer. There was a negative correlation (p<0.01) between inner CO concentration and temperature in summer and no correlation between inner CO concentration and outer CO concentration in underground shopping center 2. The mean concentration of COE within the underground shopping center was $876{\pm}353ppm$ in winter and $757{\pm}125ppm$ in summer. There was a negative correlation (p<0.01) between inner $CO_2$ concentration and air movement in summer and positive correlation (p<0.05) between inner $CO_2$ concentration and outer $CO_2$ concentration in underground shopping center. 3. The mean concentration of $SO_2$ within a underground shopping center was $0.036{\pm}0.019ppm$ in winter and $0.040{\pm}0.013ppm$ in summer. There was a positive correlation(p<0.01) between inner $SO_2$ concentration and temperature in summer and positive correlation between inner $SO_2$ concentration and outer $SO_2$ concentration in summer and winter in underground shopping center. 4. The mean concentration of $NO_2$ within a underground shopping center was $0.052{\pm}0.038ppm$ in winter and $0.042{\pm}0.016ppm$ in summer. There was a no correlation between inner $SO_2$ concentration and thermal factors in summer and winter and low correlation between inner $SO_2$ concentration and outer $SO_2$ concentration in underground shopping center 5. The mean concentration of TSP within a underground shopping center was $430{\pm}214{\mu}g/m^3$ in winter, $366{\pm}73{\mu}g/m^3$ in summer, and very in excess of the atmospheric environmental quality standards of Korea ($150{\mu}g/m3{\downarrow}$). There was low correlation between inner TSP concentration and temperature in summer and high correlation between inner TSP concentration and outer TSP concentration in underground shopping center.
다중 홉 센서 네트워크에서 신뢰성과 에너지 효율성을 고려한 동적 단일경로 설정기법
최성용(Seong-Yong Choi),김진수(Jin-Su Kim),정경용(Kyung-Yong Jung),한승진(Seung-Jin Han),최준혁(Jun-Hyeog Choi),임기욱(Kee-Wook Rim),이정현(Jung-Hyun Lee) 한국콘텐츠학회 2009 한국콘텐츠학회논문지 Vol.9 No.9
센서 네트워크에서는 신뢰성 있는 데이터 전송, 각 노드의 에너지 효율성 그리고 노드의 부하 분산을 통한 네트워크 수명의 최대화가 중요하다. 본 논문에서는 무선 센서 네트워크에서 동적 단일 경로를 이용하여 이러한 내용을 고려한 동적 단일경로 설정기법(DSPR : Dynamic Single Path Routing)을 제안한다. 각 노드는 싱크까지의 홉 카운트와 평균 잔존 에너지로 계산된 최소 비용을 가지는 동적 단일 경로로 데이터를 전송한다. 이 때, 각 노드들은 자신의 전송 과정을 감시하고 경로 손상을 탐지한 노드는 코스트 테이블을 참조하여 손상된 경로를 동적으로 변경함으로써 네트워크의 신뢰성을 높이고 노드들의 에너지소모를 균등하게 분산시킨다. 또한 네트워크 토폴로지 변화 발생시 전체 네트워크를 재구성하는 대신에 변화에 관련된 부분만을 동적으로 재구성하여 각 노드에서의 불필요한 에너지 소모를 최대한 억제함으로써 네트워크 수명을 증가시킨다. 실험결과 본 논문에서 제안하는 DSPR이 각 노드의 에너지 소모를 최소화하여 네트워크 수명을 증가시키고 신뢰성과 에너지 효율성에서 우수함을 보였다. What are important in wireless sensor networks are reliable data transmission, energy efficiency of each node, and the maximization of network life through the distribution of load among the nodes. The present study proposed DSPR, a dynamic unique path routing machanism that considered these requirements in wireless sensor networks. In DSPR, data is transmitted through a dynamic unique path, which has the least cost calculated with the number of hops from each node to the sink, and the average remaining energy. At that time, each node monitors its transmission process and if a node detects route damage it changes the route dynamically, referring to the cost table, and by doing so, it enhances the reliability of the network and distributes energy consumption evenly among the nodes. In addition, when the network topology is changed, only the part related to the change is restructured dynamically instead of restructuring the entire network, and the life of the network is extended by inhibiting unnecessary energy consumption in each node as much as possible. In the results of our experiment, the proposed DSPR increased network life by minimizing energy consumption of the nodes and improved the reliability and energy efficiency of the network.