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류기한,서홍택 충주대학교 산업대학원 2002 大學院論文輯 Vol.3 No.-
With the tremendous growth of PC market and enhancement of computing ability, the whole of our life has changed considerably. Now, there are lots of effort to interconnect the grown computing environment and implement communication function to make the working environment more effectively. In this paper, we studied the architecture, features, and interoperability of the ATM and xDSL technologies that remarkable in data communication network these days.
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광역 인터넷망에서 MPLS VPN을 이용한 QoS 제공
柳基漢,徐弘澤,禹利錫 충주대학교 산업대학원 2001 大學院論文輯 Vol.2 No.-
With the wide deployment of Internet, there were remarkable effort to construct Private Network using public Internet in the corporate network. VPN service using public Internet has the advantage of cost effectivity, access convenience and etc against VPN service using leased line. In this paper, we studied the feature and structure of VPN and how to construct more strong VPN with MPLS technology. Finally, we confirm the superiority and ability of QoS guarantee of MPLS VPN to IP VPN by network simulation results.
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손목자해로 응급실에 내원한 환자수와 기후인자와의 관련성
한재현,서승완,조규종,김정미,서홍택,정유진,성수정,황재연,이원준,Han, Jae Hyun,Suh, Seung Wan,Cho, Gyu Chong,Kim, Jung Mi,Seo, Hong Taek,Jung, Yu Jin,Seong, Su Jeong,Hwang, Jae Yeon,Lee, Won Joon 한국정신신체의학회 2020 정신신체의학 Vol.28 No.2
연구목적 자살행동의 계절성은 잘 알려져 있는 현상이지만, 자해행동의 계절성은 알려진 바가 적다. 본 연구는 자해행동 중 하나인 손목자해행동이 계절성을 나타내는지를 확인하고, 기후인자와의 관련성을 파악하고자 했다. 방 법 자해행동의 계절성을 확인하기 위하여 2014. 12~2019. 5까지 일 병원 응급실에 손목자해행동으로 내원한 226명의 대상자의 월별 평균 내원 숫자가 월별로 차이를 나타내는지를 보았다. 손목자해행동과 기후인자와의 관련성을 확인하기 위하여 월 단위 시간변수와 기상청 데이터를 통해 획득한 월별 기후변수(기온, 일조량, 1개월 전 대기압)를 설명변수로 하고, 월 별로 손목자해행동으로 응급실에 내원한 횟수를 결과변수로 하여 일반화 가법모형을 이용한 다중 포아송 회귀분석을 실시하였다. 결 과 손목자해행동으로 응급실에 내원한 대상자의 월 평균 숫자는 남자에서 유의한 월별 차이가 있었고, 9월에 가장 많았다(남자 : p=0.048, 여자 : p=0.21, 전체 : p=0.28). 다중 회귀분석 결과 손목자해로 응급실에 내원한 월 평균 환자의 숫자는 남자에서는 1달전 대기압과 기온의 교호작용과 관련이 있었고(p=0.010), 여자에서는 일조량과 양의 상관관계[p=0.044, β=4.70×10-3, 95% CI=(1.19×10-4, 9.27×10-3)]를 보였다. 결 론 손목자해행동은 남성에서 두드러진 계절성을 보이며, 이는 기후변수의 변화와 관련성이 있다. Objectives : Although the seasonality of suicide is a well-known phenomenon, little is reported about the seasonality of non-suicidal self-injury. The purpose of this study was to identify the seasonality of wristcutting behavior and to examine its relationship with meteorological factors. Methods : To identify the presence of seasonality, we investigated whether there was a difference in the average number of visits per month to an emergency room (ER) of an urban hospital for 226 patients with wrist-cutting behavior enrolled between December 2014 and May 2019. To ascertain significant meteorological factors, we used the multiple Poisson regression using generalized additive model with time, monthly temperature, monthly sunshine hour, and atmospheric pressure in the prior month as explanatory variables. Results : In males, the average number of monthly visits to the ER for wrist cutting behavior differed by month and was the highest in September (male : p=0.048, female : p=0.21, total : p=0.28). As a result of multiple regression analysis, the average number of patients admitted to the ER for wrist cutting behavior was related to the interaction between atmospheric pressure in the prior month and temperature in males (p=0.010), and showed a positive correlation with sunlight in females [p=0.044, β=4.70×10-3, 95% CI=(1.19×10-4, 9.27×10-3)]. Conclusions : Wrist cutting behavior shows seasonality in male, which is associated with changes in meteorological variables.
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모바일 메신저를 이용한 자살 및 자해기도자의 퇴원 후 사례관리
조창희,조영석,조규종,이진혁,이종실,김인영,오원희,서홍택,김정미 대한응급의학회 2019 대한응급의학회지 Vol.30 No.3
Objective: Mobile messengers are becoming common methods to communicate among people in various fields. This study investigated the effectiveness of mobile messengers as a tool for post-discharge case management of emergency department patients who attempted suicide and self-harm. Methods: This study was a retrospective observational study of data collected prospectively. A total of 327 patients who attempted suicide and self-harm in the emergency department were divided into two groups: a conventional protocol group with a face-to-face or phone call interview and a new protocol group with added mobile messenger counseling. The basic characteristics, such as sex, age, methods of suicide and self-harm attempt, consent for case management, and admission to a ward, were surveyed. The rates of successful case management (transfer to a local community center or followup to neuropsychiatric outpatient clinic, or both) were compared as a primary outcome between the two groups. Results: The conventional protocol group was 122 cases and the new protocol group was 205 cases. No significant differences in sex, age, methods of suicide and self-harm attempt, rate of consent to case management, and admission to a ward were observed between the two groups. On the other hand, the total successful management rate in mobile messenger group was higher than that of the other group (P=0.020). Conclusion: This study showed that mobile messengers could be an alternative communication tool for the post-discharge case management of patients who attempted suicide and self-injurious behavior. Nevertheless, a well-designed future study might be needed to determine if that method would reduce the reattempt rate.
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성지민,조영석,조규종,이종실,김인영,서홍택,김정미 대한응급의학회 2021 Clinical and Experimental Emergency Medicine Vol.8 No.1
Objective Postdischarge case management for self-harm or suicide attempters often fails; therefore, this study aimed to investigate the effects of mobile messenger counseling (MMC) on the postdischarge case management results among this patient group. Methods A retrospective analysis was done with data collected from March 2015 to February 2020 that included self-harm or suicide attempters who had visited a Korean emergency department and were discharged. If patients consented, postdischarge case management and MMC were conducted from March 2017. The primary outcome was the rate of successful case management, which reflects the patients either connecting to a local psychiatric healthcare center or undergoing a follow-up at a neuropsychiatric outpatient department at least once following discharge. Using univariate and multivariate logistic regression analyses, we evaluated MMC’s effects on these patients’ postdischarge case management. Results Of 913 patients, 604 participated in this study. In terms of successful case management, the MMC group showed a significantly higher rate than the non-MMC one (28.3% vs. 16.1%, P=0.001). A multivariate analysis demonstrated that access to postdischarge MMC (odds ratio, 2.149; 95% confidence interval, 1.357–3.403; P=0.001) and giving consent for case management while in the emergency department were significantly associated with successful case management (odds ratio, 8.917; 95% confidence interval, 5.610–14.173; P<0.001). Conclusion The use of MMC for self-harm or suicide attempters is associated with higher case management success rates by increasing their chances of connecting to a psychiatric healthcare center or a neuropsychiatric outpatient department.
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