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콘크리트 균열 깊이 추정에 유의미한 이미지 특성 변수에 관한 연구
정서영(Seo-Young Jung),손채봉(Chae-Bong Sohn),유정호(Jung-Ho Yu) 한국퍼실리티매니지먼트학회 2021 한국퍼실리티매니지먼트학회지 Vol.16 No.2
Since the depth of concrete cracks is important information for evaluating the safety of facilities, a technology capable of accurately and quickly measuring the depth of cracks is needed. However, in the facility maintenance practice, the crack depth is measured through non-destructive testing using ultrasonic equipment. This method has the disadvantage of poor efficiency. Such limitations of existing technologies can be solved through the development of image-based crack depth measurement technology. This is because if the crack depth measurement is based on an image, restrictions on the timing and location of the inspection can be resolved. In order for such image-based crack depth measurement technology to be developed, identification of image characteristic variables related to crack depth must precede. Therefore, the purpose of this study was to identify image characteristic variables meaningful to the crack depth. In order to achieve the purpose of the study, we collected 100 actual cases of cracking, measured the crack depth, and took an image. In addition, we created a dataset by extracting image characteristic variables such as hue, luminance, and brightness from the captured image through image processing technology. Using the thus-produced dataset, we conducted statistical analysis to identify significant image characteristic variables for crack depth estimation.
정서영(Jung Seo-Young),이대균(Lee Dae-Kyun) 한국어린이미디어학회 2010 어린이미디어연구 Vol.9 No.1
본 연구는 사립유치원 원감들이 유치원에서 중간자적 위치의 삶을 살아가면서, 아픔으로 느끼는 다양한 애환과 다시 힘을 내게 하는 보람된 요소들, 그리고 미래에 대한 희망 등을 질적 연구방법을 통해 밝히고자 하였다. 2009년 9월부터 11월까지 총 11주 동안, 11명의 사립유치원 원감들을 연구 참여자로 하여 심층면담과 관련문서, 연구자의 반성적 저널쓰기를 통해 자료를 수집하였다. 수집한 자료를 분석한 결과 사립유치원 원감들은 애환의 요소로 원장과 교사와의 사이에서 매개체 역할, 모든 오류와 민원의 해결사 역할, 유아의 안전 문제로 인한 학부형 관계, 원감 자격 연수 과정 없이 업무를 시작함과 과도한 원아 모집 경쟁, 그리고 육아를 겸하는 데서 오는 어려움을 호소하였으며 보람의 요소로는 원장으로부터 인정 받음과 학부모의 격려 및 업무 수행에서 오는 성취감, 그리고 교사의 성장과 유치원의 발전을 보며 보람된 마음을 가질 수 있다고 하였다. 또한 앞으로 원장 연수를 받고 본인의 원을 경영하면서 자신의 교육철학이 반영된 좋은 프로그램을 마음껏 실천해 보기를 희망하고 있었다. The purpose of this research is to understand the position and life of the vice-principals who carry out their duties as a mediator and to clarify the meaning of it. The eleven participants for this research are selected out of the vice-principals serving in Gyung-gi and Cheon-an, Dae-jeon province considering various careers and characteristics. The duration of the research lasted for eleven weeks. To collect the data we used in-depth interview, phone interview, and e-mail interview with each participant and wrote a journal to record the flow and characteristics of the research. First of all, the private kindergarten vice-principals had so much difficulties in carrying out their duties. The first element can be the difficulties in playing a role as a mediator between the president who substantially runs the kindergarten and the teachers who educate the children near by. The second element of difficulties is the confusion caused by dealing with all the errors and public grievance whether anytime or anywhere. The third element is the safety issue of the children that can takes place any time and dealing with the parents with that issue. The forth element is to choose the vice-principals out of the president's authority unlike the public kindergartens that hire through systematical steps to be a vice-principals. The fifth element is the excessive competition in recruiting new students leads to overaction that ruins the principle and fundamental rule. The last element is the difficulty of maintaining both teaching and raising their own kids at the same time. Secondly, they felt worthwhile, having the motive power that enables the vice-principals's to move forward when they get the recognition from the president, which turned out as the best factor. Other factors also can be an encouragement from parents, a feeling of the satisfaction and achievement after an event. Besides, when the teachers are cooperative and new students keep signing up they find it worthwhile. Thirdly, the participants found the biggest hope in the systematically legitimate way of children educator that became most considerable meaning and they could get the feeling of the pride. After that, they talked about getting a training to be a president that can be the next goal for them to run their own kindergarten adapting good philosophy and programs.
정서영 ( Jung Seo-young ),유정호 ( Yu Jung-ho ) 한국건축시공학회 2021 한국건축시공학회 학술발표대회 논문집 Vol.21 No.1
Currently, the depth of cracks is measured using ultrasonic detectors in maintenance practice. This method consists of measuring the depth of cracks by attaching ultrasonic depth measuring equipment to the concrete surface, and there are restrictions on the timing and location of the inspection. These limitations can be addressed through the development of image-based crack depth measurement AI technology. If crack depth measurements are made based on images, restrictions on the timing and location of inspections can be lifted because images acquired with simple filming equipment can be used as input information. To efficiently develop these artificial intelligence technologies, it is essential to identify the interrelationship between crack depth measurements and image characteristic information. Thus, this study is a basic study of the development of image-based crack depth measurement AI technology and aims to identify image characteristic information related to crack depth.