세션 1-2 : 의원 기반 환자중심 만성질환 관리 방안

조민우 한국보건행정학회 2014 한국보건행정학회 학술대회 논문집 Vol.2014 No.1

상아질 접착제의 용매 증발이 접착 효율에 미치는 영향

조민우,김지연,김덕수,최경규 大韓齒科保存學會 2010 Restorative Dentistry & Endodontics Vol.35 No.5

연구목적: 본 연구는 상아질 접착제의 잔류 용매가 접착 효율에 미치는 영향을 평가하고자 하였다. 연구 재료 및 방법: 본 연구에서는 5세대 2단계 산부식형 접착제와 7세대 단일과정 자가부식형 접착제를 사용하였다. 상아질 접착제의 증발률과 전환률, 적용 후 용매의 공기건조 방법에 따른 미세인장결합강도를 측정하였으며 접착 계면을 FE-SEM을 이용하여 관찰하였다. 결과: 1. 시간에 따라 접착제의 증발률은 증가하나 접착제의 종류에 따라 증가 양상이 서로 달랐다. 2. 대부분 전환률은 증발률에 비례하는 경향을 나타내었다. 3. 공기건조 방법에 따라 결합강도는 대부분 under군, control군, over군 순으로 증가하는 양상을 나타내었다. 4. FE-SEM에서 아세톤을 용매로 사용하는 접착제는 공기건조 방법에 따라 droplet이나 gap이 관찰되었다. 결론: 상아질 접착제의 잔류 용매는 접착 효율에 부정적인 영향을 미치기 때문에, 상아질 접착제의 선택과 사용 시 용매의 종류와 특징에 대한 적절한 이해가 필요할 것이다. Objectives: The purpose of this study is to evaluate bonding efficacy by means of measuring the effect of remained solvent on Degree of conversion(DC) and μTBS and FE-SEM examination. Materials and Methods: Two 2-step total etching adhesives and two single-step self etching adhesives were used in this study. First, volume weight loss of 4 dentin adhesives were measured using weighting machine in process of time in normal conditions and calculate degree of evaporation (DE). Reaction/reference intensity ratio were measured using micro-Raman spectroscopy and calculate DC according to DE. Then 2 experimental groups were prepared according to air-drying methods (under, over) and control group was prepared to manufacturer's instruction. Total 12 groups were evaluated by means of micro tensile bond strength and FE-SEM examination. Results: Degree of evaporation (DE) was increased as time elapsed but different features were observed according to the kind of solvents. Acetone based adhesive showed higher DE than ethanol and butanol based adhesive. Degree of conversion (DC) was increased according to DE except for S³ bond. In μTBS evaluation, bond strength was increased by additional air-drying. Large gaps and droplets were observed in acetone based adhesives by FE-SEM pictures. Conclusions: Additional air-drying is recommended for single-step self etching adhesive but careful consideration is required for 2-step total etching adhesive because of oxygen inhibition layer. Evaporation method is carefully chose and applied according to the solvent type.

그로테스크로 보는 『속홍루몽』의 서사

조민우 대한중국학회 2023 중국학 Vol.84 No.-

본글은 1799년경 출판된 속서 『속홍루몽』의 서사적 특징을 살펴 그 의의에 대해 논하고자 한다. 『속홍루몽』은 그동안 “황당무계”, “중하층문인의 기호” 등 부정적인 평가 가운데, 소설 내용에 대한 연구는 적은 편이었다. 이에 본글은 그로테스크 개념을 통해 속서의 내용과 의의에 대한 재검토를 시도했다. 『속홍루몽』은 대관원에서 비롯되는 우아하고 세련된 사건과 통속적이고 자극적인 사건을 동시에 배치하여 ‘정상’과 ‘비정상’, ‘윤리’와 ‘비윤리’적인 상황을 비교하였으며, 속서의 인물들은 신체가 훼손당하거나 배설 행위를 통해 성격이 바뀌고 새로운 생명을 얻는다. 즉, 속서의 기괴한 서사는 의도적으로 배치된 정황이 있으며 일정 기능을 수행한다는 점에서 그로테스크 미학이 지향하는 새로운 생명력을 낳는 효과와 유사한 부분이 있다. 『속홍루몽』은 원소설 『홍루몽』의 주제와는 다소 다른 성격의 글이지만, 속서의 저자는 저술 단계에서 원소설에 대한 새로운 해석을 구상했다는 점에서 의의가 있다고 할 수 있다. 또 『속홍루몽』의 인쇄와 그로테스크 서사는 19세기의 청대 문화자본이 실패할 가능성이 높지만 성공한다면 시장을 좌우할 수 있는 저술 기획을 시도했다는 사례이다. This article delves into the intricacies of the sequel Xuhongloumeng, which emerged around 1799 amid negative evaluations such as being deemed “preposterous” or attributed to “mid-lower class” writers. Despite these criticisms, the sequel’s content has received scant attention. To shed new light on the novel’s significance, this article employs M. Bakhtin’s theory of “grotesque realism” as a powerful lens. By unraveling the captivating web of Xuhongloumeng’s “grotesque” narrative, it seeks to explore its unique ability to “purify” chi-qing(癡情) while simultaneously depicting the multi-faceted layers of class, morality, and religion that characterized the Qing dynasty. Rather than being confined to the stereotypes of “mid-lower class” preferences, the vulgar scenes within the sequel are revealed as carefully constructed settings, showcasing the author’s mastery of fantastic realism. Ultimately, Xuhongloumeng emerges with a distinct thematic essence from its predecessor, Hongloumeng, offering readers an alternative reading method that celebrates the profound significance of chi-qing(癡情) at all societal levels.

[연구노트] 경주시립도서관 소장 홍루몽 殘本 조사

조민우 한국홍루몽연구회 2021 홍루아리랑 Vol.- No.10

[청춘 스케치] 이 맛에 산다

조민우 샘터사 2011 월간 샘터 Vol.499 No.-

홍수 위험도 판별을 위한 CNN 기반의 분류 모델 구현

조민우,김동수,정회경 한국정보통신학회 2022 한국정보통신학회논문지 Vol.26 No.3

Due to global warming and abnormal climate, the frequency and damage of floods are increasing, and the number of people exposed to flood-prone areas has increased by 25% compared to 2000. Floods cause huge financial and human losses, and in order to reduce the losses caused by floods, it is necessary to predict the flood in advance and decide to evacuate quickly. This paper proposes a flood risk determination model using a CNN-based classification model so that timely evacuation decisions can be made using rainfall and water level data, which are key data for flood prediction. By comparing the results of the CNN-based classification model proposed in this paper and the DNN-based classification model, it was confirmed that it showed better performance. Through this, it is considered that it can be used as an initial study to determine the risk of flooding, determine whether to evacuate, and make an evacuation decision at the optimal time. 지구온난화 및 이상 기후로 인해 홍수의 빈도 및 피해 규모가 늘어나고 있으며, 홍수 취약 지역에 노출된 사람이 2000년도에 비하여 25% 증가하였다. 홍수는 막대한 금전적, 인명적 손실을 유발하며, 홍수로 인한 손실을 줄이기 위해 홍수를 미리 예측하고 빠른 대피를 결정해야 한다. 본 논문은 홍수 예측을 위한 핵심 데이터인 강우량과 수위 데이터를 활용하여 시기적절한 대피 결정이 이루어질 수 있도록 CNN기반 분류 모델을 활용하여 홍수 위험도 판별 모델을 제안한다. 본 논문에서 제안한 CNN 기반 분류 모델과 DNN 기반의 분류 모델의 결과를 비교하여 더 좋은 성능을 보이는 것을 확인하였다. 이를 통해 홍수의 위험도를 판별하여, 대피 여부 판단하며 최적의 시기에 대피 결정을 내릴 수 있도록 하는 초기 연구로서 활용할 수 있을 것으로 사료된다.

Understanding traffic congestion to improve tourist satisfaction in local tourism

조민우,김현노,신효중 한국관광연구학회 2016 관광연구저널 Vol.30 No.4

With booming local economy aided by successful local tourism efforts, traffic congestion has critically impacted decision-making related to economic activities of potential demand for local tours. The objectives of this study are 1) to grasp the current situation of tourists and traffic congestion and how it influences local tourism, and 2) to analyze the behavior of tourists toward measures to solve traffic congestion. A total of 440 questionnaires that were collected through face to face interviews by convenience sampling were analyzed. The study results show that the probability of adopting a conditional vehicle allowance in the groups with no experience of traffic congestion turned out to be higher than those with more than two hours of traffic congestion experience. The probabilities of adopting a no vehicle allowance were high in the groups with no experience and more than two hours of traffic congestion, with the latter having the highest score. It can be concluded that the overall prohibition of vehicles is preferable to the conditional allowance of vehicles in the groups who experienced traffic congestion. It might be considered that many of people not only prefer the prohibition policy, but also want to avoid congestion charges (or costs) included in the conditional vehicle allowance measure.

우리나라 모성 관련 질환의 사회적 비용

조민우,조보금,이상일,안정훈,오인환,이예린 한국보건의료기술평가학회 2018 보건의료기술평가 Vol.6 No.2

Objectives: Maternal morbidity and mortality are important healthcare issues. However there have been few studies on cost of illness (COI) from maternal disorders. This study aimed to estimate the COI due to maternal disorders in Korea. Methods: By reviewing previous studies and consulting expert we determined the scope of maternal disorders. We operationally defined maternal disorders as maternal hemorrhage, maternal sepsis, hypertensive disorders of pregnancy, obstructed labor, and abortion for maternal disorders. The reference period of this study is the year 2015. Main source of data were the National Health Insurance Service claims data, cause of death statistics from the Korea National Statistical Office, and the Korea Health Panel study. We classified the total costs into direct and indirect costs. The direct costs cover healthcare costs and non-healthcare costs. The indirect costs consist of productivity losses due to morbidity and premature death. Results: The cost of maternal disorders in 2015 was 229.7 billion won. The direct and indirect costs of maternal disorders were 165.2 billion won and 64.5 billion won respectively. The largest cost item for maternal disorders was healthcare cost (138.3 billion won, 60.2%). By age groups, the COI in 30-39 years old women were the highest (165.1 billion won, 71.9%). Abortion was the disorder with the highest COI among maternal disorders (71.9 billion won, 31.3%). Conclusion: The COI due to maternal disorders in Korea is quite substantial. Economic burden of maternal disorder increased when being compared with the year 2012 data despite the continued low birth rate in Korea. Therefore, it is necessary to continuously monitor the social costs of the maternal disorders in Korea.

레진시멘트의 접착 내구성에 관한 연구

조민우,박상혁,김종률,최경규 대한치과보존학회 2007 Restorative Dentistry & Endodontics Vol.32 No.4

LSTM-GRU 모델을 활용한 VDS 기반 교통량 예측 시스템

조민우,채희석,황순화,정회경 한국콘텐츠학회 2023 한국콘텐츠학회논문지 Vol.23 No.11

Although the vehicle penetration rate continues to increase worldwide, the capacity of roads is relatively low, resulting in increased traffic congestion. Traffic congestion can be divided into repetitive congestion and non-recurrent congestion. In this paper, we analyze and predict congestion that occurs repeatedly. Many studies are being conducted to predict traffic volume using existing deep learning, but in some studies, one model is trained with data from multiple roads, resulting in lower model performance. In this paper, through data analysis, only the data of one VDS with the highest traffic volume is used to learn through LSTM and GRU models. In the case of the traffic volume prediction model, it was confirmed that the NSE value was 94.25%, showing good performance. Through future research, it is considered that it will be of great help in relieving traffic congestion if it is used as a preliminary study for V2N system design and collected and used in real time.