철도교용 PSC I 거더교의 장기 솟음 분석 및 개선방안에 대한 연구

배강민(Bae Kang Min),민경환(Min Kyung Hwan),이진옥(Lee Chin Ok),임남형(Lim Nam Hyoung) 한국방재학회 2017 한국방재학회논문집 Vol.17 No.5

최근 국내 철도교에서는 콘크리트 궤도의 적용이 일반화되고 교량의 경간이 길어지면서, 저형고의 신형식 PSC 교량의 장기변형에 대한 적정한 예측을 통해 교량-궤도의 시공성과 구조적안전성, 고속 차량의 주행안전성 등을 확보해야 하는 문제점이 제시되고 있다. 본 연구에서는 콘크리트 궤도 PSC 거더교의 장기솟음을 시방기준과 시공단계별 전산해석을 통한 장기솟음 예측값을 분석하였다. 또한 열차의 주행안정성 확보를 위한 콘크리트 궤도 PSC 거더교의 장기솟음량 개선방안을 제시하였다. 개선된 단면은 거더의 휨강성을 증가시키기 위해 기존 2.6 m의 형고를 3.4 m로 증가시켜 장기솟음량을 기존 단면에 비해 36% 정도로 크게 제어하는 것으로 나타났다. 형고가 증가된 반면 기존의 5주형을 4주형으로 감소하여 경제성을 확보하였다. 최종적으로 개선된 단면은 궤도-교량의 시공성 및 열차의 주행안전성이 크게 개선될 수 있을 것으로 판단된다. Recently, the application of concrete track in domestic railway bridges has been generalized and the span of bridge has become longer. Therefore, it is suggested that the constructability and structural safety of the bridge-track and the running stability of the high-speed should be ensured through appropriate prediction of the long-term deformation of the new type PSC bridges with low height. In this study, the long-term deformation of PSC girder bridge with concrete track is analyzed by specifications and numerical analysis of construction stages. Also, it is proposed that a method to improve the long-term deformation of PSC girder bridge in concrete track to secure the running stability. In order to increase the flexural stiffness of the girder, in the improved cross section, the height of girder increased 2.6 m to 3.4 m so that the long-term camber can be controlled to be about 36% as compared with the existing section. While the existing five girders were reduced to four girders to secure economical efficiency. Finally, the improved cross section can be expected to greatly improve the constructability of the track-bridge and the running stability of high-speed trains.

FCN과 Spatial attention을 이용한 Sementic Segmentation

배강민(Kang Min Bae),유창동(Chang D. Yoo) 대한전자공학회 2018 대한전자공학회 학술대회 Vol.2018 No.6

용무도 선수의 마인드셋과 운동몰입 및 운동지속의 관계

배연준,김창우,강민철 대한무도학회 2023 대한무도학회지 Vol.25 No.3

본 연구는 용무도 선수의 마인드셋과 운동몰입 및 운동지속의 관계를 규명하는 데 목적이 있다. 연구수행을 위하여 설문지를 측정 도구로 사용하였고, 자료수집은 비확률 표집방법 중 편의표본 추출법을 사용하여 2023년 6월 1일부터 6월 16일까지 대한용무도협회에 등록된 고등부, 대학부 용무도 선수 230명을대상으로 설문을 실시하였다. 이후 불성실하다고 판단된 17부를 제외한 213명의 자료를 최종분석하였다. 본 연구에서는 IBM SPSS 21.0, AMOS 21.0프로그램을 통해 빈도분석, 신뢰도 분석, 확인적 요인분석, 상관관계분석 및 경로분석을 실시하였다. 분석된 결과 첫째, 용무도 선수의 성장 마인드셋은 운동몰입에 긍정적인 영향을 미쳤으나, 고정 마인드셋은 유의미한 영향을 미치지 않았다. 둘째, 용무도 선수의 운동몰입은 운동지속에 긍정적인 영향을 미쳤다. 셋째, 용무도 선수의 성장 마인드셋과 고정 마인드셋은 운동지속에 유의한 영향을 미치는 것으로 나타났다. The primary purpose of this study was to analyze the effect of Yongmudo athlete mindset on Exercise Flow and Exercise Adherence. A questionnaire was used as a measurement tool in this study. For data collection, the survey was given to 230 Yongmudo athletes of high school and university age in Korea who were registered with the Korea Yongmudo Association. Data collection ran june the 1st and 16th of june 2023. Out of the collected surveys, 17 were unusable, leaving 213 copies of data for final data analysis. To analyze the data, the frequency analysis, reliability verification, confirmatory factor analysis, correlation analysis, and path analysis were conducted using the IBM SPSS 21.0 and AMOS 21.0 programs. The research results are as follows. First, the data indicated that that the Yongmudo athlete mind set had positive effect on exercise flow but, fixed mindset had not effect on exercise flow. Second, the data indicated that that the Yongmudo athlete exercise flow had a positive affect exercise adherence. Second, the data indicated that that the Yongmudo athlete mind set had a positive affect exercise adherence.

GAN 적대적 생성 신경망과 이미지 생성 및 변환 기술 동향

조영주,배강민,박종열,Jo, Y.J.,Bae, K.M.,Park, J.Y. 한국전자통신연구원 2020 전자통신동향분석 Vol.35 No.4

Recently, generative adversarial networks (GANs) is a field of research that has rapidly emerged wherein many studies conducted shows overwhelming results. Initially, this was at the level of imitating the training dataset. However, the GAN is currently useful in many fields, such as transformation of data categories, restoration of erased parts of images, copying facial expressions of humans, and creation of artworks depicting a dead painter's style. Although many outstanding research achievements have been attracting attention recently, GANs have encountered many challenges. First, they require a large memory facility for research. Second, there are still technical limitations in processing high-resolution images over 4K. Third, many GAN learning methods have a problem of instability in the training stage. However, recent research results show images that are difficult to distinguish whether they are real or fake, even with the naked eye, and the resolution of 4K and above is being developed. With the increase in image quality and resolution, many applications in the field of design and image and video editing are now available, including those that draw a photorealistic image as a simple sketch or easily modify unnecessary parts of an image or a video. In this paper, we discuss how GANs started, including the base architecture and latest technologies of GANs used in high-resolution, high-quality image creation, image and video editing, style translation, content transfer, and technology.

남원지역 성인 여성의 골밀도 : 연령 및 폐경전후,체중에 따른 비교 Comparison by age , Pre-& postmenopausal status and body weight

김현경,배강민,임훈,오철용 대한가정의학회 2001 Korean Journal of Family Medicine Vol.22 No.2

Background memory-assisted zero-shot video object segmentation for unmanned aerial and ground vehicles

윤기민,김형일,배강민,문진영 한국전자통신연구원 2023 ETRI Journal Vol.45 No.5

Unmanned aerial vehicles (UAV) and ground vehicles (UGV) require advanced video analytics for various tasks, such as moving object detection and segmentation; this has led to increasing demands for these methods. We propose a zero-shot video object segmentation method specifically designed for UAV and UGV applications that focuses on the discovery of moving objects in challenging scenarios. This method employs a background memory model that enables training from sparse annotations along the time axis, utilizing temporal modeling of the background to detect moving objects effectively. The proposed method addresses the limitations of the existing state-of-the-art methods for detecting salient objects within images, regardless of their movements. In particular, our method achieved mean J and F values of 82.7 and 81.2 on the DAVIS’16, respectively. We also conducted extensive ablation studies that highlighted the contributions of various input compositions and combinations of datasets used for training. In future developments, we will integrate the proposed method with additional systems, such as tracking and obstacle avoidance functionalities.

건강결과와 건강결정요인간의 횡단면 시계열 연구 : 주요 OECD 국가를 대상으로

최윤정,이영호,배성일,강민선 한국보건행정학회 2009 보건행정학회지 Vol.19 No.4

Health promotion policies have needed to assess in detailed and evidence-based work to set a policy goal and clear future directions of health promotion in Korea. To identify the major factors related with health promotion, we assessed the associations between public health outcome (potential years of life loss, PYLL) and national health determinants. For this purpose, we used a pooled cross sectional time-series regression analysis with corrected fixed effect models involving sixteen member countries of the Organisation for Economic Cooperation and Development during the period 1970 to 2001. The PYLL was positively associated with tobacco and alcohol consumption (model 1 and 2) and calories intake (model 2 and 3) while the PYLL was negatively associated with GDP, fruit and vegetable intake (model 2), number of doctors (model 3), coverage rates of health care security, and elderly population rates (model 4). In conclusion, health behaviors related with tobacco, alcohol, and nutrition were significant health determinants for health outcome. Overall analysis results of this study will provide a guidance toward improved macro- and micro-policy development for future health promotion policy in Korea.

급냉응고된 Al-Li-Cu 합금의 시효거동

홍영준,김순호,강민철,김인 배 ( Y . J . Hong,S . H . Kim,M . C . Kang,I . B . Kim ) 한국열처리공학회 1993 熱處理工學會誌 Vol.6 No.3

Effects of aging treatment on the microstructural evolution of a rapidly solidified Al-Li-Cu alloy were investigated by diffcerential scanning calorimetry (DSC) and transmission electron microscopy(TEM). It was found that the precipitation sequence was : supersaturated solid solution α`→metastable δ`+stable precipitate T₁→stable precipitates δ+T₁. Two exothermic and two endothermic peaks are detected by DSC analysis. The two exothermic and endothermic peaks corresponded to δ` and δ+T₁ precipitation and dissolution reactions respectively. The enthalpy of δ` precipitation decreased with increasing of aging temperature and time until the finishing point of precipitation. The activation energy for precipitation of δ` was measured as 80KJ/㏖ and the energy for dissolution was 93KJ/㏖. These values are higher than those of Al-Li binary alloy. Peak hardness value (Hv 170) was obtained at 210℃ for 1hr aging treatment which coincided with finishing point of δ` precipitation.

주요 OECD 국가의 건강증진정책 영향분석

최윤정,이영호,배성일,강민선,고윤성 한국보건교육건강증진학회 2007 한국보건교육·건강증진학회 학술대회 발표논문집 Vol.- No.-

멀티태스크 학습을 활용한 실세계 쓰러진 사람 탐지 기술 개발

부원국(Wonkuk Boo),배강민(Kangmin Bae),윤기민(Kimin Yun),배유석(Yuseok Bae) 대한전자공학회 2023 대한전자공학회 학술대회 Vol.2023 No.6

Recent advancements in deep learning have stimulated the development of various datasets pertinent to human understanding. However, only a fraction of these datasets address a range of social issues, such as fallen person detection, while the majority focus on providing human keypoints and action labels. Therefore, this paper proposes a multi-task learning approach that jointly trains annotations, including keypoints and state recognitions, to enhance fallen person detection. We offer a statistical overview of human state datasets and propose methods to reconcile discrepancies in human state labels derived from multiple domains. Additionally, we present both qualitative and quantitative results of fallen person detection using benchmark datasets.