1월의 급식관리

오경란 대한영양사회 1988 國民營養 Vol.104 No.-

외상성 골낭에 관한 연구

오경란,박원길,고재경,김영진,Oh Kvong-Ran,Park Won-Kyl,Ko Jae-Kveung,Kim Young-Jin 대한영상치의학회 1997 Imaging Science in Dentistry Vol.27 No.2

Traumatic bone cyst is a pathologic cavity that is not lined with epithelium. It is, therefore, not a true cyst. It may be a normal variant rather than a disease process. The etiology of the condition is unknown. This condition is occured widely ranging ages(2 to 75years), however, most are ,found during the second decade of life. Radiographically, this condition is radiolucent lesion with well-defined outline, scalloping of superior margins, Cyst enucleation and curettage is the treatment of choice. The authors compared and analyzed the clinicoradiologic features of the five cases of traumatic bone cyst, diagnosed at the Dental college hospital in Chosun University, Kwangju, Korea. The five cases were shown the followed results; 1. 3cases occured in second decade of life & no significant sex differences (M:F, 2:3) All cases occurred in mandible. 2. Two patients complained symptoms, but three cases had no symptom with encountering during routine examination. 3. In 3 of 5cases, teeth vitality existed except one tooth and no checking of teeth vitality in two cases. 4. All cases didn't have any accurate trauma history, but one case was in orthodontic treatment, another case was postextraction site area. 5. Radiologically, 'scalloping appearance' were evident in all cases; in 3 cases, multilocular tendency & only one case seen intact mandibular canal image. 6. Histologically, all section showed bone trabeculae with blastic activity, 2 cases showed no epithelial lining, and other 2 cases were seen innflammatory cell infiltration in edematous tissue. 7. Surgical intervention (curettage) was that treatment of choice.

Digora$\textregistered$ 영상시스템을 이용한 인접면 인공 치아우식병소의 진단능에 관한 연구

오경란,최의환,김재덕,Oh Kyung-Ran,Choi Eui-Hwan,Kim Jae-Duk 대한영상치의학회 1998 Imaging Science in Dentistry Vol.28 No.2

Digora system is an intraoral indirect digital radiography system utilizing storage phosphor image plate. It has wide dynamic range which allows it to decrease the patient s exposure time and may increase diagnostic ability through image processing (such as edge enhancement, grey scale conversion, brightness change, and contrast enhancement). And also, it can transmit and storage image information. The purpose of this study was to evaluate the diagnostic ability of artificial proximal caries between Conventional radiograph and Digora images(unenhanced image, brightness & contrast controlled image, and edge enhanced image). ROC(Receiver Operating Characteristic) analysis, paired t-tests, and F-tests were done for the statistical evaluation of detectability. The following results were acquired: 1. In Grade I lesions, the mean ROC areas of Conventional radiograph, Digora unenhanced image, Digora controlled image, and Digora edge enhanced image were 0.953, 0.933, 0.965, 0.978 (p>0.05). 2. In Grade II lesions, the mean ROC areas of Conventional radiograph, Digora unenhanced image, Digora controlled image, and Digora edge enhanced image were 0.969, 0.964, 0.988, 0.994. Among theses areas, there was just statistical significance between Diagnostic abilities of Digora edge enhanced image and Conventional radiograph (p<0.05). 3. In the Interobserver variability, the ROC curve areas of Digora edge enhanced image was lowermost in these areas, regardless of the Carious lesion depths. In conclusion, intraoral indirect digital system, Digora system, has the potential possibility as an alternative of Conventional radiograph in the diagnosis of proximal caries.

라인트레이서를 활용한 센서기반 초등로봇프로그래밍 PBL 문제 개발 및 적용 분석

오경란,허경 한국정보교육학회 2010 정보교육학회논문지 Vol.14 No.3

본 논문에서는 정보교과의 초등 프로그래밍기초교육에서 흐름도 중심의 프로그래밍 지도를 위해, 라인트레이서 로봇을 활용한 센서기반 초등로봇프로그래밍 PBL 문제를 제안하였다. 제안한 초등로봇프로그래밍 문제는 다양한 알고리즘을 답안으로 갖도록 설계되었다. 이를 위해 PBL기반 초등로봇프로그래밍 교육단계를 제시하였다. 그리고 라인트레이서 로봇 예제를 통해 제안한 PBL 문제들을 활용하여, 실제 수업에 적용한 결과를 난이도 할당의 적절성 및 학생들의 문제해결력 측면에서 분석하였다. In this paper, to instruct elementary programming concepts based on flowchart programming for elementary school students, we proposed sensor-based elementary robot programming PBL problems using line-tracer robots. Proposed PBL problems are designed to have various correct-answer algorithms. For this purpose, we present PBL-based robot programming instruction steps. Through applying the proposed sensor-based PBL problems using line-tracer robots, experimental results are analyzed in views of the problem-solving ability and suitability of allocating degrees of difficulties to the proposed elementary robot programming problems.

외상성 골낭에 관한 연구

박원길,고재경,김영진,오경란 大韓口腔顎顔面放射線學會 1997 Imaging Science in Dentistry Vol.27 No.2

Traumatic bone cyst is a pathologic cavity that is not lined with epithelium. It is, therefore, not a true cyst. It may be a normal variant rather than a disease process. The etiology of the condition is unknown. This condition is occurred widely ranging ages(2 to 75years), however, most are found during the second decade of life. Radiographically, this condition is radiolucent lesion with well-defined outline, scalloping of superior margins. Cyst enucleation and curettage is the treatment of choice. The authors compared and analyzed the clinicoradiologic features of the five cases of traumatic bone cyst, diagnosed at the Dental college hospital in Chosun University, Kwangju, Korea., The five cases wear shown the followed results; 1. 3cases occurred in second decade of life & no significant sex differences (M:F, 2:3) All cases occurred in mandible. 2. Two patients complained symptoms, but three cases had no symptom with encountering during routine examination. 3. In 3 of 5cases, teeth vitality existed except one tooth and no checking of teeth vitality in two cases. 4. All cases didn't have any accurate trauma history, but one case was in orthodontic treatment, another case was postextraction site area. 5. Radiologically, "scalloping appearance" were evident in all cases; in 3 cases, multilocular tendency & only one case seen intact mandibular canal image. 6. Histologically, all section showed bone trabeculae with blastic activity, 2 cases showed no epithelial lining, and other 2 cases were seen innflammatory cell infiltration in edematous tissue. 7. Surgical intervention (curettage) was that treatment of choi

인공지능 딥러닝을 이용한 색보정 기술 동향 : Colourlab Ai 소프트웨어 중심으로

오경란(Kyung Ran Oh),김정환(Jeong Hwan Kim) 동국대학교 영상문화콘텐츠연구원 2021 영상문화콘텐츠연구 Vol.23 No.-

본 논문에서는 영화 영상 색보정 분야 중심으로 인공지능 기술 동향을 반영하여 최근에 개발된 인공지능 색보정 애플리케이션인 Colourlab Ai의 활용에 대하여 살펴보았다. 색보정 과정 의 프라이머리를 중심으로 딥러닝 기반의 색보정 영상처리 분석기술 중에서 매칭 샷 (Matching Shot)에 대하여 알아보고자 한다. 영화, 영상 프로젝트의 색보정을 개선하는 참조 스틸(Reference still) 컷 활용 사례를 제시하여, 영화 후반 제작자와 컬러리스트의 제작 속도를 높여 줄 수 있고 새로운 룩을 빠르게 찾을 수 있도록 영화 후반 제작에 Colourlab Ai의 효율적으로 적용하는 방법을 제시하였다. 그 결과로서 데이터 축적을 기초로 한 인공지능 기술의 영화 후반 제작에서의 활용은 DI 프로세스에서 창의적이며 제작시간이 절감된 가속화된 워크플로우의 대안방식이 될 수 있을 것이다. Today, artificial intelligence technology is also influencing film-making. In this paper, we experimented with the use of the artificial intelligence application Colourlab Ai in color grading. This application was recently developed by reflecting the trend of AI technology in the field of color grading for film post production. In the digital intermediate process, we experimented Raw files with the matching shot based on the deep learning as color grading analysis technologies. The example of the use of reference still cuts can help colorists create a quick look in the process, so that directors and producers can focus on the feel and atmosphere they are pursuing in the films. This allows post film-makers to focus on more creative areas in the DI process. As a result, the use of AI technology based on data accumulation in post-film production will be a creative, time-saving, and accelerated workflow alternative to the DI process.

Digora 영상시스템을 이용한 인접면 인공 치아우식병소의 진단능에 관한 연구

김재덕,오경란,최의환 大韓口腔顎顔面 放射線學會 1998 Imaging Science in Dentistry Vol.28 No.2

Digora system is an intraoral indirect digital radiography system utilizing storage phosphor image plate. It has wide dynamic range which allows it to decrease the patient's exposure time and may increase diagnostic ability through image processing (such as edge enhancement, grey scale conversion, brightness change, and contrast enhancement). And also, ti can transmit and storage image information. The purpose of this study was to evaluate the diagnostic ability of artificial proximal caries between Conventional radiograph and Digora images(unenhanced image, brightness & contrast controlled image, and edge enhanced image). ROC(Receiver Operating Characteristic) analysis, paired t-test, and F-tests were done for the statistical evaluation of detectability. The following results were acquired: 1. In Grade I lesions, the mean ROC areas of Conventional radiograph, Digora unenhanced image, Digora controlled image, and Digora edge enhanced image were 0.953, 0.933, 0.965, 0.978 (p>0.05). 2. In Grade II lesions, the mean ROC areas of Conventional radiograph, Digora unenhanced image, Digora controlled image, and Digora edge enhanced image were 0.969, 0.964, 0.988, 0.994. Among theses areas, there was just statistical significance between Diagnostic abilities of Digora edge enhanced image and Conventional rediograph(p<0.05). 3. In the Interobserver variability, the ROC curve areas of Digora edge enhanced image was lowermost in these areas, regardless of the Carious lesion depths. In conclusion, intraoral indirect digital system, Digora system has the potential possibility as an alternative of Conventional radiograph in the diagnosis of proximal caries.