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양기욱 ( Kiwook Yang ),서인철 ( Incheol Seo ) 영남대학교 의과대학 2017 Yeungnam University Journal of Medicine Vol.34 No.2
Background: Varicella is the most common infectious disease reported despite the high vaccination rate. Interventions that target humans are particularly effective for varicella because humans are its only natural host. On the other hand, the existing national varicella surveillance systems lack the information to identify an outbreak. Therefore, a new index to assess varicella outbreaks was developed. Methods: The residential addresses of 2,718 varicella cases reported in Daegu in 2016 were converted to geographic coordinates and the distances between new varicella case and previous cases within 21 days were calculated from the date analyzed. Two cases were considered to be adjacent if the distance between them was less than 1 km. Finally, a proximity index was introduced by dividing the number of adjacent cases by the number of new cases on the date analyzed. Results: First, time-series charts and scatter plots were used to verify that the proximity index reflected the spatial closeness of the different varicella cases. The proximity index is helpful in identifying outbreaks from a list of single varicella cases. In addition, in this study, a new epidemic characteristic of varicella based on the proximity index was shown. Conclusion: The proximity index introduced in this study can be used to determine the likelihood of an outbreak from a single case of varicella, and it can be embedded in a web-based national varicella surveillance system that is currently in operation.
유기욱(KiWook Ryu),양윤석(YoonSeok Yang),강경우(KyungWoo Kang) 한국정보기술학회 2006 Proceedings of KIIT Conference Vol.2006 No.-
컴퓨터를 이용한 실습시간에 교육생들 중에는 인터넷을 활용한 컴퓨터게임이나 웹써핑을 함으로써 수업의 진행을 방해하는 경우가 있다. 이 때문에, 강의자는 네트워크 스위치를 필요에 따라 끄거나 켠다. 이와 같은 반복되는 일은 강의자에게 있어서는 성가신 일이다. 본 연구에서는 컴퓨터 교육ㆍ실습을 할 때 강의자로 하여금 교육생의 관리와 실습실 컴퓨터의 관리가 편리 하도록 하는 컴퓨터 교육ㆍ실습 관리 시스템을 개발하였다. 이 시스템을 이용하여 쉽게 컴퓨터 실습 교육을 할 수 있다. In the computer practice room, some students play the computer game or web-surfing using internet. Because such an illegal act disturbs the lecture, lecturers often tum off the network-switch when the lecture do not need the internet. However, the repeated on-and-off of the switch bothersome the lecturer. In this research, we develop the system that could monitor the connection of students’ computer. The monitor notify the illegal connection of the students' computer to the lecturer’s computer.