세션 1-2 : 의원 기반 환자중심 만성질환 관리 방안

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

방향성 시추를 위한 RSS 기술특성 및 적용사례 분석

조민우,장호창,유인항,이정환 한국자원공학회 2015 한국자원공학회지 Vol.52 No.1

The rotary steerable system(RSS) is technically capable of controlling a direction during drilling bychanging angle of bits or applying lateral force. The RSS has an advantage which is reducing the drilling timedue to its high rate of penetration(ROP). RSS has been widely applied to develop oil and gas reservoir, as wellas unconventional resources such as shale gas. This study presents technical characteristics about mechanism ofthe RSS operating and introduces laboratory experimental cases and field projects. Laboratory tests show thatit is possible to predict directional behavior of RSS. Furhemore, field projects show that the drilling time is reducedby the increasing ROP since slide was not required. The results in the directional behavior by various concretestrength and bit characteristics can be used to build and apply to a directional drilling plan for oil and gas fielddevelopment. RSS(rotary steerable system)는 시추 비트의 각을 변화시키거나 횡력을 가하여 즉각적인 방향제어가가능한 기술로써, 높은 굴진율로 시추기간을 단축시켜 시추비용을 절감할 수 있다는 장점을 갖고 있어 대규모의유·가스전 개발뿐만 아니라 셰일가스 등의 비전통자원개발에 널리 적용되고 있다. 본 연구에서는 RSS의 작동메커니즘에 관한 기술적 특징에 대해 고찰하고 시추 시험을 수행한 실험실 및 현장 프로젝트 사례를 소개하였다. 실험실 시험사례를 통해 RSS의 방향성 거동 예측이 가능함을 확인하였으며, 현장 적용사례 분석 결과 슬라이드없이 작업해 굴진율이 증가함으로써 시추시간이 단축됨을 확인하였다. 다양한 콘크리트 강도와 비트 특성에따른 방향성 거동 분석 결과는 향후 국내외 유전 개발 시 RSS를 이용한 방향성 시추 계획 수립 및 적용에활용할 수 있을 것으로 판단된다.

시간교환법을 이용한 일부 EQ-5D 건강상태의 질 가중치 측정

조민우,이상일,Jo, Min-Woo,Lee, Sang-Il 대한예방의학회 2007 예방의학회지 Vol.40 No.2

Objectives : This study was conducted to elicit quality weights for 42 EQ-5D health states with the time trade-off (TTO) method from the general population of South Korea. Methods : We selected the same EQ-5D health states as those in the UK MVH study. The Korean version of EQ-5D questionnaire and TTO method were used for the valuation process. We interviewed 500 people as a representative sample of the general population in Seoul and Gyeonggido. The result was compared with those from UK, Japan, and USA by Spearman's rank correlation and t-test. Results : TTO values for 42 EQ-5D health states and 'unconscious' state were obtained from the general South Korean population. The best one was '11112' state and the worst one was 'unconscious' state. The states worse than death were '33323', '33333', and 'unconscious' states, which had negative TTO values. There was a strong correlation between TTO values of the EQ-5D health states and those of their corresponding states from UK, Japan, and USA (Spearman's correlation coefficient: 0.885, 0.882, and 0.944, respectively, p <0.001). However, absolute TTO values of most EQ-5D health states were significantly different from those of their corresponding states in other foreign studies (UK : 41/42, USA : 32/42, Japan : 15/17). Conclusions : We found that the Korean general population TTO values for EQ-5D health states were different from those of other foreign studies, suggesting that a specific Korean valuation set should be developed and used for economic evaluation studies in South Korea.

급성 뇌졸중으로 입원한 환자의 1년 후 임상 지표와 건강 관련 삶의 질 비교: 일개 병원 기반의 뇌졸중 등록 체계에 등록된 환자를 중심으로

조민우,배희준 대한신경과학회 2009 대한신경과학회지 Vol.27 No.1

Background: Knowing the magnitude of a problem is the first step to improving it, and quantifying the healthrelated quality of life (HRQOL) allows us to do it with respect to stroke. To identify the HRQOL in patients with ischemic stroke and its affecting factors, and compare it with other clinical and functional scales. Methods: A consecutive series of patients with acute ischemic stroke (AIS) or transient ischemic attack (TIA) was recruited. Their HRQOL and utilities were assessed using the EQ-5Dindex-which evaluates the health profile of an individual in five dimensions (mobility, self-care, usual activity, pain/discomfort, and anxiety/depression) and three levels (no problem, some/moderate problems, and extreme problems)-at 1 year after stroke. The Modified Rankin Scale (MRS), Barthel Index (BI), and NIH Stroke Scale (NIHSS) were used to measure clinical and functional statuses. The EQ-5Dindex and the clinical and functional statuses were compared by clinical parameters, and the relationships among those scales were examined. Additionally, the EQ-5Dindex in the patients was compared with that in age- and sex-matched healthy controls. Results: Among 538 patients with AIS or TIA, 465 patients (males, 59.8%; age, 65.3±11.8 [mean±SD]; TIA, 7.7%; and initial NIHSS, 4.5±5.1) were evaluated. The EQ-5Dindex and the clinical and functional statuses were clearly aggravated by age, but did not differ with most of the risk factors. The EQ-5Dindex was strongly and significantly correlated with scores on the MRS, BI, and NIHSS. The EQ-5Dindex was lower in patients (especially older ones) than in healthy controls. Conclusions: This study shows that the EQ-5D is a feasible and valid tool for measuring HRQOL in patients with AIS or TIA. Background: Knowing the magnitude of a problem is the first step to improving it, and quantifying the healthrelated quality of life (HRQOL) allows us to do it with respect to stroke. To identify the HRQOL in patients with ischemic stroke and its affecting factors, and compare it with other clinical and functional scales. Methods: A consecutive series of patients with acute ischemic stroke (AIS) or transient ischemic attack (TIA) was recruited. Their HRQOL and utilities were assessed using the EQ-5Dindex-which evaluates the health profile of an individual in five dimensions (mobility, self-care, usual activity, pain/discomfort, and anxiety/depression) and three levels (no problem, some/moderate problems, and extreme problems)-at 1 year after stroke. The Modified Rankin Scale (MRS), Barthel Index (BI), and NIH Stroke Scale (NIHSS) were used to measure clinical and functional statuses. The EQ-5Dindex and the clinical and functional statuses were compared by clinical parameters, and the relationships among those scales were examined. Additionally, the EQ-5Dindex in the patients was compared with that in age- and sex-matched healthy controls. Results: Among 538 patients with AIS or TIA, 465 patients (males, 59.8%; age, 65.3±11.8 [mean±SD]; TIA, 7.7%; and initial NIHSS, 4.5±5.1) were evaluated. The EQ-5Dindex and the clinical and functional statuses were clearly aggravated by age, but did not differ with most of the risk factors. The EQ-5Dindex was strongly and significantly correlated with scores on the MRS, BI, and NIHSS. The EQ-5Dindex was lower in patients (especially older ones) than in healthy controls. Conclusions: This study shows that the EQ-5D is a feasible and valid tool for measuring HRQOL in patients with AIS or TIA.

국내외 임상질지표 현황

조민우,Jo, Min Woo 한국의료질향상학회 2010 한국의료질향상학회지 Vol.16 No.1

[청춘 스케치] 이 맛에 산다

조민우 샘터사 2011 월간 샘터 Vol.499 No.-

시공 및 유지관리 단계에서 활용 가능한 단센서 기반의 BIM 구축을 위한 기초연구

조민우,손효주,김창민,이주혁,김창완,Cho, Minwoo,Son, Hyojoo,Kim, Changmin,Lee, Joohyuk,Kim, Changwan 한국BIM학회 2012 KIBIM Magazine Vol.2 No.1

건설 프로젝트의 정보를 프로젝트 참여자들이 공유하고 활용하는 것은 건설 프로젝트의 성공적인 수행 을 위한 중요한 요소로 작용한다. 최근 프로젝트 참여자들의 효과적인 정보의 공유 및 활용을 위한 도구로써 BIM에 관심이 집중되고 있다. BIM은 건설 프로젝트의 초기 계획 설계에서 유지관리 단계까지 프로젝트 참여자들이 필요로 하는 정보를 제공함으로써 프로젝트의 전체 생애주기 동안 활용 가능하다. 그러나 잦은 설계변경, 기존 도면의 분실 등으로 인하여 수행 중이거나 완공된 건설 프로젝트의 정확한 정보를 포함한 BIM의 획득이 어려워 시공 및 운영 단계에서 BIM 활용이 이루어지지 못하는 실정이다. 따라서 해외에서는 BIM 활용의 한계를 극복하고 건설프로젝트 전반에서 BIM을 활용하기 위하여 수행 중이거나 완공된 건설 프로젝트의 현장정보를 포함하는 BIM 구축을 위한 연구가 활발하게 진행되나 국내에서는 관련 연구가 매우 부족한 실정이다. 이에 본 연구의 목적은 건설 프로젝트의 시공 및 유지관리 단계에서 활용이 가능한 첨단센서 기반의 BIM 구축에 대한 필요성 제시에 있다. 이를 위해 본 연구에서는 먼저 국내 BIM 활용에 대한 문헌 연구를 통해 국내 BIM 활용의 문제점을 도출하였다. 문제점을 해결하기 위한 방법으로 첨단센서 기반의 BIM 구축을 제안하였으며, 관련 연구 고찰을 통해 향후 연구 방향을 제시하였다. In recent years, building information modeling (BIM) has been an important issue within the architect, engineering, and construction (AEC) industry. BIM provides a way to share and exchange semantically rich information about the buildings in order to achieve a successful level of collaboration, communication, and interaction between stakeholders throughout the life cycle of the project. However, despite the recognition of its potential, BIM has not yet been utilized in the construction, operation, and maintenance stages because of the need to reorganize the BIM by reflecting the as-built status of the buildings. In order to improve and increase the use of BIM at all phases of a project, several research efforts are exploring the creation of an as-built BIM that is based on advanced sensors. However, there is a lack of literature and investigation on this research area to date within the domestic AEC industry. The aim of this study is to suggest ways in which BIM can be utilized within the construction, operation, and maintenance stages based on advanced sensors so that it is an approach that might be usefully carried forward. This paper begins by presenting a review of the existing BIM research and achievement in order to determine the limitations of the use of BIM in the domestic AEC industry. Conclusively, this paper suggests a direction for the future applications of BIM and describes how it can benefit from additional research.

레진시멘트의 접착 내구성에 관한 연구

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

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.

수위 예측 모델을 활용한 홍수 관리 시스템 설계 및 구현

조민우,박장순,김성재,정회경 한국정보통신학회 2023 한국정보통신학회논문지 Vol.27 No.2

온라인 포털 플랫폼은 뉴스 기사와 온라인 댓글을 제공하고 있으나, 온라인 댓글의 익명성은 반시민적 표현을 증가시켜 사회적 문제점으로 간주되고 있다. 댓글의 반시민성 검출 연구가 많이 이루어진 국외와 달리, 국내에서는 비시민성을 세분화한 한국어 데이터셋이 구현되지 않아 심도있는 연구가 이루어지지 못하였다. 본 연구에서는 댓글의 반시민성에 대한 라벨링을 총 13가지 항목으로 시행하였으며 반시민적 표현으로 요약하였다. 또한 어텐션 알고리즘을 이중으로 적용하여 임베딩 벡터를 추출하였고 이후 2-d CNN으로 반시민성 항목을 분류하였다. 그 결과, 제안한 알고리즘이 무례한 호칭 및 공격적 어조 등의 반시민성 검출에 유용하다는 것을 보여주었다. 본 연구는 민주적 담론을 저해하는 반시민적 댓글들을 탐지함으로써 건전한 온라인 댓글 문화 형성에 기여할 것으로 기대된다.