CFRP 그리드 제조 공법에 따른 동결융해 및 알칼리 저항성 성능 평가

심우석,최석원,이상문,정우영 한국복합신소재구조학회 2025 복합신소재구조학회논문집 Vol.16 No.2

철근 콘크리트는 주요 건축 자재로서 다양한 구조 시스템에 널리 사용됩니다. 하지만 시간이 지남에 따라 동결-해동 주기, 철근 부식 등의 요인으로 인해 내구성이 저하되는 경우가 많습니다. 최근 탄소섬유강화폴리머(CFRP)는 강철보다 높은 중량 대비 강도, 동결융해 손상 저항성, 부식 저항성 등의 장점으로 인해 큰 주목을 받고 있습니다. 이러한 장점에도 불구하고 국내외 연구를 검토한결과, CFRP 그리드에 대한 실험 연구가 부족하여 실험을 통한 CFRP 그리드 포장 공법 검증의 필요성이 강조되고 있습니다. 이 연구는 알칼리 노출에 따른 CFRP 그리드 포장 공법의 동결-해동 저항성과 강도 저하를 평가하는 것을 목표로 했습니다. 연구 결과, 인발 공법으로 제조된 CFRP 그리드는 RTM 공법으로 제조된 그리드에 비해 동결-해동사이클 후 강도가 10% 감소하고 알칼리 노출시 최대 32.8%의 강도 감소가 발생하는 것으로 나타났습니다. Reinforced concrete is a widely used construction material in various structural systems. However, its durability often deteriorates over time owing to factors such as freeze–thaw cycles and reinforcement corrosion. Recently, carbon fiber-reinforced polymer (CFRP) has gained considerable attention for its superior properties compared with steel, including a higher strength-to-weight ratio, resistance to freeze–-thaw damage, and immunity to corrosion. Nonetheless, a review of domestic and international studies highlights a gap in experimental research on CFRP grids. This underscores the need to validate CFRP grid paving methods through experimentation. This study evaluated the freeze–thaw resistance and strength degradation of CFRP grid paving methods under alkali exposure. Reportedly, CFRP grids manufactured using the Pultrusion method experienced a 10% strength reduction after freeze–thaw cycles and up to 32.8% maximum strength loss under alkali exposure compared with the grids produced using the resin transfer molding method.

딥러닝 기반 실시간 얼굴 모자이크 기법을 활용한 초상권 보호 시스템

심우석,전병태 한국지식정보기술학회 2021 한국지식정보기술학회 논문지 Vol.16 No.3

Recently, the number of cases uploading videos taken by individuals on the Internet has increased. Uploading a video that includes not only yourself but also people around you can cause infringement of portrait rights and privacy issues. In general, The portrait rights of others are protected by manually blurring faces of people moving over time using a video editing program. However, this is a very cumbersome task and the existing automatic mosaic system also has limitations because it does not detect all identifiable faces properly in videos and it misses tracked faces frequently. Therefore, to prevent the problem of infringement of portrait rights, this paper proposes a portrait rights protection system using deep learning. The system uses YOLOv3, Face-Net, and SORT algorithm to protect the portrait rights by blurring faces of other people except the users registered in the system. Compared to the existing automatic mosaic system, It can detect all identifiable faces and blur faces more accurately. It can operate in real-time by skipping a certain frame and performing face verification. It is also possible to flexibly respond to various changes of the face reflected on the camera by applying the SORT object tracking algorithm. The proposed system can improve convenience for users by automating the task of manually blurring faces of people and it shows superior performance compared to the existing automatic mosaic system.

지역 축제의 계량적 분포와 명칭의 변화 양상

심우석,하영우 한국호텔리조트학회 2025 호텔리조트연구 Vol.24 No.2

This study investigates the quantitative distribution trends of regional festivals over time and space, focusing on era, region, and festival themes. It aims to analyze the linguistic features observed in the naming processes of regional festivals that experienced explosive growth since the mid-1990s. Utilizing the "Yearly Regional Festival Information Guide" provided by the Ministry of Culture, Sports, and Tourism, the study reprocessed the data to perform a quantita- tive analysis. Results indicate that the quantitative expansion of regional festivals was gradual until the 1980s but surged dramatically in the 1990s and continued into the 2000s before entering a phase of stabilization in the 2010s. Regional disparities were evident, with sustained growth in the Gyeongsang region, contrasted by slower development in Jeju due to its abundant tourism resources. Since the 1990s, "local specialties" and "ecological nature" emerged as dominant themes, whereas "cultural arts" and "community harmony" regained prominence in the 2010s. The study also found that festival names shifted from using {-je}, reflecting ritualistic origins, to employing broader terms like {chukje} and incorporating diverse linguistic structures, including foreign words, especially after the 1990s. By analyzing the changes in naming practices alongside festival trends, this study contributes to a multidisciplinary under- standing of regional festivals, combining insights from tourism studies and Korean linguistics.

Application of Botulinum Toxin in Pain Management

심우석 대한통증학회 2011 The Korean Journal of Pain Vol.24 No.1

Botulinum toxin has been used for the treatment of many clinical disorders by producing temporary skeletal muscle relaxation. In pain management, botulinum toxin has demonstrated an analgesic effect by reducing muscular hyperactivity, but recent studies suggest this neurotoxin could have direct analgesic mechanisms different from its neuromuscular actions. At the moment, botulinum toxin is widely investigated and used in many painful diseases such as myofascial syndrome, headaches, arthritis, and neuropathic pain. Further studies are needed to understand the exact analgesic mechanisms, efficacy and complications of botulinum toxin in chronic pain disorders.

건설현장 안전을 위한 로봇 기반 안전장비 식별 시스템

심우석,강홍근,이윤주,권지민,이익현 제어로봇시스템학회 2023 제어로봇시스템학회 국내학술대회 논문집 Vol.2023 No.6

향토음식이 도시 브랜드가치와 여가만족에 미치는 영향 연구

심우석 관광경영학회 2019 관광경영연구 Vol.89 No.-

his study is on the effects of local traditional food on urban brand value and leisure satisfaction. The significance of this study can be found in the aspect that there have been few researches on how local traditional food tourism, which leading to leisure activities, affects urban brand value and satisfaction although there have been a lot of studies on functional aspects such as local traditional food development. Also, it would be a necessary research to achieve successful goals in the tourism marketing environment of local governments which are fiercely competitive to promote the revitalization of regional economy. As the results of this study, all factors of local traditional food did not importantly affect the image of brand value, whereas the attraction, health orientation, and natural stability of local traditional food gave a significant impact on the recognition of brand value and where as the health orientation crucially influenced the perceived quality of brand value. Moreover, the attraction and health orientation of local traditional food of Jeonju city had an impact on leisure satisfaction. For the enhancement of urban brand value, this study will be crucially applied in clearly understanding the characteristics of local traditional food and in connecting with marketing since local traditional food has become more important as the motivation to determine the destination of tourism due to the development of the media and the convenient transportation network.

라만분광분석법을 이용한 한국 고대 유리의 조성 분류

심우석,김은아,임수영,김형민,김규호 한국문화유산보존과학회(구 한국문화재보존과학회) 2022 보존과학회지 Vol.38 No.2

유학생의 한국문화적응이 생활만족과 생활적응에미치는 영향

심우석,소재민 교육종합연구원 2024 교육종합연구 Vol.22 No.4

The purpose of this study is to verify the impact of Vietnamese students' adaptation to Korean culture on life satisfaction and life adjustment. The hypotheses for achieving the research purpose are as follows. First, adaptation to Korean culture will affect life satisfaction. Second, adaptation to Korean culture will affect adaptation to life. Third, life satisfaction will affect life adjustment. This study surveyed 177 international students studying in Korea, and the survey was conducted from November 1 to November 14, 2022. The conclusion of the study is as follows. First, the sub-factors of international students' adaptation to Korean culture, such as proficiency in Korean and adaptation to life in Korea, were found to have a significant effect, but Korean exchanges were found to have no significant effect. Second, it was found that speaking Korean and interacting with Koreans had a significant effect on adaptation to social life, but adaptation to life in Korea did not appear to have an effect. Exchanges with Koreans were found to have a significant effect on adaptation to Korean culture and school life, but proficiency in Korean and adaptation to life in Korea were found to have no effect.Interaction with Koreans was found to have a significant effect on relationship adaptation to Korean culture, but proficiency in Korean and adaptation to life in Korea were found to have no effect. Third, life satisfaction was found to have a significant effect on life adaptation.

고에너지 볼밀링법에 의해 제조된 복합분말의 환원 및 소결 거동

심우석,김대건,민경호,김영도 한국분말야금학회 2001 한국분말야금학회 학술대회논문집 Vol.2001 No.1

수상함 적격심사기준의 합리적 개정방안 연구

심우석,정석재 한국방위산업학회 2017 韓國防衛産業學會誌 Vol.24 No.4

The criteria for determining the winner of the warship project bid have been revised to reflect changes in the defense industry policy, the business environment of the shipyard, and the requirements of the Navy, but there is a need to review various issues. The issue is to attract quality improvement in price competition and to examine the bid price limit ratio considering the recent sluggish shipbuilding industry. The purpose of this study is to improve the method of selection of winning bidder and the suggestion of improvement according to direction of defense industry policy in the method of selecting successful bidder of warship business. We have analyzed the results of selecting the winning bidder for the actual warship business and established the improvement plan according to the result through the expert group. As a result of the study, we propose an amendment to improve quality by adjusting the score of some test items in the technical ability test field. The current winning bid limit ratio was set at a low level, but the actual bid price was high and the cause was confirmed in the field of qualitative evaluation. "appropriateness of production management plan" in the field of assessment, qualitative evaluation method is applied. Therefore, in order to improve it, we propose an improvement method to change the class name and to subdivide the classification. 함정사업의 낙찰자 결정기준은 방산정책과 업체의 경영환경변화 및 수요군의 요구사항을 반영하여 개정되어 왔으나 가격경쟁체제를 유지하면서 품질향상 방안과 최근 조선업 경기부진에 따른 낙찰하한율 등에 대한 검토 필요성이 제기되고 있다. 본 연구는 함정사업 낙찰자 결정기준 중「수상함 적격심사기준」을 대상으로 방산정책 방향 등에 부합된 개선안을 도출하기 위하여 타 적격심사기준 등을 검토하고 실제 적격심사 결과를 분석하여 낙찰자 결정방법의 개선방안을 전문가 그룹을 통해 모색하였다. 연구결과로 품질향상을 위하여 기술능력 심사분야 중 일부 심사항목의 배점을 조정하는 개정안을 제안하였다. 그리고 현 낙찰하한율은 낮게 책정되었지만 실제 입찰가격은 높은 수준이며 그 원인은 정성평가 심사분야로 확인되었다. “생산관리계획의 적절성” 심사분야는 정성평가 방법이 적용되므로 이를 개선하기 위해 등급 명칭 변경과 등급 분류를 세분화하는 개선안을 제안하였다.