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위 내시경 이미지 품질에 따른 병변 검출 모델의 성능 비교 연구
이율희,김영재,김광기 대한의용생체공학회 2023 의공학회지 Vol.44 No.2
Many recent studies have reported that the quality of input learning data was vital to the detection of regions of interest. However, due to a lack of research on the quality of learning data on lesion detetcting using gas- troscopy, we aimed to quantify the impact of quality difference in endoscopic images to lesion detection models using Image Quality Assessment (IQA) algorithms. Through IQA methods such as BRISQUE (Blind/Referenceless Image Spatial Quality Evaluation), Laplacian Score, and PSNR (Peak Signal-To-Noise) algorithm on 430 sheets of high qual- ity data (HQD) and 430 sheets of low quality data (PQD), we showed that there were significant differences between high and low quality images in lesion detecting through BRISQUE and Laplacian scores (p<0.05). The PSNR value showed 10.62±1.76 dB on average, illustrating the lower lesion detection performance of PQD than HQD. In addi- tion, F1-Score of HQD showed higher detection performance at 77.42±3.36% while F1-Score of PQD showed 66.82±9.07%. Through this study, we hope to contribute to future gastroscopy lesion detection assistance systems that involve IQA algorithms by emphasizing the importance of using high quality data over lower quality data.
최지은,이율희,이동엽,유재호,김진섭,김성길,홍지헌 대한물리치료학회 2022 대한물리치료학회지 Vol.34 No.3
Purpose: This study aimed to determine which interventions are effective in increasing hamstring flexibility due to changes in the range of motion (ROM) and pennation angle (PA) when foam rolling (FR) and proprioceptive neuromuscular facilitation (PNF) stretching were performed. Methods: A total of 24 healthy participants who agreed to participate in the study were randomly chosen. The participants were divided into three groups of eight people: Control, FR, and PNF stretching groups. The hip flexion angle (ROM) and PA of the hamstrings were measured before and after the experiment. The Wilcoxon signed-rank test was used to analyze the ROM and PA for each group by comparing the before and after results. The Kruskal-Wallis test and the Mann-Whitney U test were used to analyze the increase in hamstring flexibility between the groups. Results: A statistically significant difference was observed in the ROM and PA within all groups, and only the ROM was significant in the comparison between the three groups. In the comparison between the control and other two groups, a significant difference was noted in both the ROM and PA in the FR group and only the ROM in the PNF stretching group (p<0.05). In the comparison between the FR and PNF stretching groups, no significant difference was observed (p>0.05). Conclusion: These findings FR and PNF stretching increased the ROM; however, no change in PA was observed. Therefore, FR and PNF stretching were considered effective interventions in immediately increasing hamstring flexibility.
김정희 ( Kim Jung-hee ),김경란 ( Kim Kyoung-ran ),이율희 ( Lee Yull-hee ) 한국장애인개발원 2015 장애인복지연구 Vol.6 No.1
본 연구는 지리적으로 인접할 뿐만 아니라 사회문화적으로도 많은 동질성을 확보하고 있는 한·중·일 3개국의 장애인복지정책 비교를 통해 정책적 시사점을 도출하는데 목적이 있다. 동아시아 사회복지의 최근 변화와 동일한 맥락에서 동아시아 장애인복지 정책을 살펴보는 것은, 장애인복지정책에 대한 동아시아 국가에서의 논의를 촉발할 수 있는 기제로 작용할 수 있다. 본 연구에서는 유사사례비교연구설계방법을 분석틀로 비교기준을 소득보장, 고용보장, 의료재활보장으로 분류하였다. 분석결과, 소득보장 측면에서는 지급대상자격과 재원에서 상이점을 발견할 수 있었고, 고용보장측면에서는 제도변천의 지속적인 발전이라는 공통적인 양상을 보였으며, 의료재활보장측면에서는 3개국 모두 장애인의 건강에 대한 관심과 요구가 반영된 정책을 전개해나가고 있었다. 연구결과 시사점을 살펴보면 첫째, 다양한 장애유형별 법령의 구비 및 확대, 둘째, 1981년 UN ‘장애인인권선언’ 발표 및 ‘세계장애인의 해’ 선포의 영향으로 인한 장애인 권리에 기반한 정책의 전개, 셋째, 사회통합 및 공생이념의 확산, 넷째, 인구학적 요인을 고려한 정책수립의 필요성이다. 한·중·일 3국의 고령화 속도는 매우 빠르기 때문에, 향후 인구고령화 속도에 따른 장애인구의 추이에 관심을 갖고 장애인의 생애주기를 고려하여 정책을 설계하여야 한다. This primary purpose of this study is to analyse present conditions of each area of social welfare policies for persons with disabilities in three countries, Korea, China and Japan. Those countries are geographically adjacent to each other and both socially and culturally, they are considered to be very much alike. How this study looks into social welfare policies for persons with disabilities and recent changes in social welfares in East Asia could be a chance for the countries in East Asia to open a discussion over social welfare policies for persons with disabilities. In the light of that, the study has proceeded with its investigation and came up with implications related to the social welfare policies for persons with disabilities in Korea, China and Japan. The methodological strategy utilized in this study, called 'most similar systems' comparison design is fairly clear. In exercising these comparative logics, we have selected four comparative variables as income security, job security, medical rehabilitation security. In the light of income security, we have much in different of payment object qualification and finance, in terms of job security, there are some in common aspect of continuous development. In addition, in terms of medical rehabilitation security, three nations have steady policy of health for people with disabilities reflected their desire. The implications are provided as follows. First, the three countries need to secure and expand various acts to cope with all those different types of disability. Second, in 1981, UN declared the ‘Rights of Persons with Disabilities, International Year of Persons with Disabilities.’ Since then, the countries made a progress with their systems in relation to the rights of persons with disabilities. Third, it is the social integration and spread of co-existence philosophy. When the ultimate goal of a welfare state is believed to be going for goals of individuals in a stabilized society, improving quality of individual life, quality of the disabled’s life will be in a great correlation with quality of a society. Fourth, the three countries need to take demographic factors into consideration when they try to establish any new relevant policies. Korea, China and Japan are rapidly changing into an ageing society and because of that, they should pay attention more to changes in the population of persons with disabilities including a life cycle of those people when they design a relevant policy.