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최정구(Jung-Gu Choi),장인수(In-Soo Chang),박기범(Ki-Bum Park) 한국환경관리학회 2019 環境管理學會誌 Vol.25 No.1
본 연구에서는 충북지역과 주변에 위치한 6개의 기상 관측소의 일강수량 자료를 이용하여 대표적인 가뭄지수인 표준강수지수(Standard Precipitation Index : SPI)를 지속기간 1개월에서 12개월에 대해 분석하였다. 분석결과를 이용하여 (-)발생기간과 정상상태로 되돌아오는 복원도 그리고 각 지점간의 상관성을 분석하였다. 그 결과 복원도는 지속기간이 길어질수록 낮아지는 것으로 장기간의 가뭄에 취약한 것으로 판단되었으며, (-)가 발생하는 기간도 급격히 길어지는 것으로 분석되었다. 지점간의 상관관계는 지속기간이 길어지면 가뭄의 상관관계가 높아지는 결과를 알 수 있었다. In this study, the Standard Precipitation Index(SPI), which is representative drought index, as analyzed for the duration of 1 months to 12 months using the daily precipitation data of 6 meteorological stations located around Chungbuk province. The analysis results were to analyzed the correlation between the (-) period of occurrence and the resiliency to the steady state. As a results, the resiliency was longer and it was judged to be vulnerable to long-term drought, and the period of occurrence of (-) was also remarkably prolonged. The correlations between the points were found to be correlated with the longer durability.
금기천,팽준영,최보영,최정구,오세리,이준,최문기,권경환,오승환,민승기,Keum, Ki-Chun,Paeng, Jun-Young,Choi, Bo-Young,Choi, Jung-Gu,Oh, Se-Ri,Lee, Jun,Choi, Moon-Ki,Kwon, Kyung-Hwan,Oh, Seung-Hwan,Min, Seung-Ki 대한악안면성형재건외과학회 2009 Maxillofacial Plastic Reconstructive Surgery Vol.31 No.1
Dental emergency varies from toothache to trauma of oromaxillofacial area. Recently, the number of emergency cases after dental treatment is increasing because surgical treatments such as implant installation rise. Dental emergency patients have been looking for emergency room of general hospital and they could be treated only when the dentist of night duty exists. Although there are many analyses on the dental emergency patients visiting general hospitals, research on the dental treatment only has not been provided enough. We anticipated different aspects between the dental emergency patients visiting independent dental hospital and general hospitals. We analyzed dental emergency patients' chief complaints and received procedures for almost 1-year period in Won-Kwang dental hospital in Dae-jeon where there had been no dental emergency settings. With this 1574 patients' result, we tried to find appropriate treatment plans regarding dental emergency patients occurring at night and holidays.
면외변위의 정량적 계측을 위한 ESPI와 Shearography의 비교
최정구,김경석,장호섭,정성욱 朝鮮大學校 機械技術硏究所 2005 機械技術硏究 Vol.8 No.2
Electronic Speckle Pattern Interfrometry is a common method for measuring out-of-plane displacement and in-plane displacement and applied for vibration analysis and strain/stress analysis. However, ESPI is sensitive to environmental disturbance, which provide the limitation of industrial application. On the other hand, Shearography based on shearing interferometer can directly measure the first derivative of out-of-plane displacement, which is insensitive to vibration disturbance. This paper proposes the out-of-plane displacement extraction technique from results of Shearography by numerical processing and measurement results of ESPI and Shearoraphy are compared quantitatively.
김대옹,최정구 서강정보대학 1997 論文集 Vol.16 No.-
The WWW is available in the multimedia information system, but it is not suitable to develope the database services system with lots of data On the other hand, A traditional database systems have a good performance on the management of a large scale of database and the developement tools of application, but it is not fit to develope a large scale of service system because of not being a form management and standard. Therefore, a large scale multimedia system is necessary to incorporate the technique of WWW and database system. The implementation of database path is possible to be extended in sever and in client. The method that a server extend the system using a CGI is easy to implement and expand but drop a performance because of process creation and data duplication between processes.