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전성우,한혜동,김정은,정회경,Jeon, Sungwoo,Han, Hyedong,Kim, Jeongeun,Jung, Heokyung 한국정보통신학회 2020 한국정보통신학회논문지 Vol.24 No.9
최근 고령화 시대가 되면서 사람들의 건강한 삶에 관한 관심이 높아지고 있다. 사람들은 잘못된 생활, 식습관, 신체활동 저하 등으로 인하여 성인병을 유발하거나 비만 인구수가 증가하고 있다. 이에 정보통신 분야에서 의료분야 정보를 활용하여 피부 미용 연구가 진행되고 있다. 기존의 시스템들은 다양한 관련 측정 항목들에 대해 결합하여 표현되지 않아서 원활한 정보를 제공받지 못하였다. 본 논문에서 제안하는 시스템은 3D 스캐너와 피부미용기기를 사용하여 사용자의 체형을 스캔하고, 3D 이미지 데이터를 사용하여 BMI(Body Mass Index) 지수를 계산하고 수집된 데이터를 한눈에 볼 수 있는 웹 서비스 시스템을 제공한다. 이는 지속적인 신체 변화 데이터를 비교하여 제공하므로 관리되는 내용을 사용자에게 제공하게 될 것이다. 이는 다양한 U-헬스 및 미용분야에서 널리 활용될 것으로 사료된다. With the recent aging age, people's interest in healthy life is increasing. People are causing adult diseases or an increasing number of obese populations due to poor lifestyles, eating habits, and poor physical activity. Accordingly, skin beauty research is being conducted using medical information in the information and communication field. Existing systems have not been able to provide smooth information because they are not expressed in combination with various related measurement items. The system proposed in this paper scans the user's body shape using a 3D scanner and a skin care device, calculates the BMI (Body Mass Index) index using 3D image data, and allows you to view the collected data at a glance. Provide a service system. This will provide the user with the content managed by comparing and providing the continuous body change data. It is expected to be widely used in various U-health and beauty fields.
생태계 서비스 가치평가를 위한 멸종위기 포유류의 종분포 연구 -전국자연환경조사 자료를 중심으로-
전성우 ( Seong Woo Jeon ),김재욱 ( Jae Uk Kim ),정휘철 ( Hui Cheul Jung ),이우균 ( Woo Kyun Kee ),김준순 ( Joon Soon Kim ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2014 한국환경복원기술학회지 Vol.17 No.1
The provided habitat of many services from natural capital is important. But because most ecosystem services tools qualitatively evaluated biodiversity or habitat quality, this study quantitatively analyzed those aspects using the species distribution model (MaxEnt). This study used location point data of the goat(Naemorhedus caudatus), marten(Martes flavigula), leopard cat(Prionailurus bengalensis), flying squirrel(Pteromys volans aluco) and otter(Lutra lutra) from the 3rd National Ecosystem Survey. Input data utilized DEM, landcover classification maps, Forest-types map and digital topographic maps. This study generated the MaxEnt model, randomly setting 70% of the presences as training data, with the remaining 30% used as test data, and ran five cross-validated replicates for each model. The threshold indicating maximum training sensitivity plus specificity was considered as a more robust approach, so this study used it to conduct the distribution into presence(1)-absence(0) predictions and to talled up a value of 5 times for uncertainty reduction. The test data`s ROC curve of endangered mammals was as follows: growing down goat(0.896), otter(0.857), flying squirrel(0.738), marten(0.725), and leopard cat(0.629). This study was divided into two groups based on habitat: the first group consisted of the goat, marten, leopard cat and flying squirrel in the forest; and the second group consisted of the otter in the river. More than 60 percent of endangered mammals` distribution probability were 56.9% in the forest and 12.7% in the river. A future study is needed to conduct other species` distribution modeling exclusive of mammals and to develop a collection method of field survey data.
전성우 ( Seong Woo Jeon ),정민규 ( Min Kyu Jung ),이명훈 ( Myung Hoon Lee ),권중구 ( Joong Goo Kwon ) 대한소화기학회 2010 대한소화기학회지 Vol.56 No.1
Background/Aims: Obesity is associated with gastroesophageal reflux disease (GERD). Leptin is a hormone which controls appetite and energy homeostasis. Alterations of its level in humans have been linked with obesity and related carcinogenesis. We postulated that the leptin level in plasma or tissues might be different according to the phenotype of GERD. We evaluated this hormone in patients with non-erosive reflux disease (NERD) and reflux esophagitis (RE) with demographic characteristics to confirm the postulation. Methods: The patients with typical GERD symptoms such as acid regurgitation and heartburn were prospectively enrolled and evaluated. The demographic data included body mass index, waist circumference, smoking, and the consumption of coffee. Rapid urease test was done to evaluate the status of Helicobacter pylori infection. We measured plasma leptin level along with the tissue level, which was obtained from the fundus of stomach. Results: A total of 44 patients were evaluated (RE 20 cases, NERD 24 cases). No demographic data was different between the two groups, except waist circumference (mean 88.6 cm in RE, 80.9 cm in NERD, p=0.006), smoking (45% in RE, 12.5% in NERD, p=0.021) and coffee consumption (85% in RE, 50% in NERD, p=0.025). The level of plasma leptin was not different between the two groups. The level of tissue leptin was also not different between the two groups with an increasing tendency in RE (mean 32.5 ng/mL vs. 28.0 ng/mL in NERD). Conclusions: We could not find any association between plasma and tissue leptin levels and the phenotype of GERD. However, increasing tendency in RE could afford to further studies in near future. (Korean J Gastroenterol 2010;56:15-19)
돌발홍수 발생 시 최단 거리 알고리즘 기반 경로 검출시스템
전성우(Sungwoo Jeon),석조기(ZhaoQi Shi),양승의(Seung Eui Yang),정회경(Heokyung Jung) 한국정보통신학회 2021 한국정보통신학회 종합학술대회 논문집 Vol.25 No.2
최근 발생하는 자연 재난 중 홍수피해는 여름철에 집중되면서 태풍 장마로 인해 인명 피해나 재산피해로 이어진다. 이러한 피해를 줄이기 위해 많은 연구가 진행되고 있다. 본 논문에서는 이러한 돌발홍수 발생 시 최단 거리 알고리즘을 사용하여 경로를 검출하고 사용자에게 제공하는 시스템을 설계하고 구현한다. 제안하는 시스템은 QGIS를 사용하여 트랙과 포인터를 생성한 지형 데이터를 활용하여 경로를 검출한다. 또한 시나리오를 통하여 검출된 경로로 대피하는 과정에서 돌발홍수가 발생 시 다른 최단 경로를 검출하여 사용자에게 제공한다. 따라서 사용자는 제안하는 시스템을 통하여 향후 발생하는 재난 안전 사고 위험에 안전한 대피를 할 수 있을 것으로 사료한다. Among the recent natural disasters, flood damage is concentrated in the summer, leading to casualties or property damage due to the typhoon’s rainy season. Much research is being done to reduce this damage. In this paper, we design and implement a system that detects paths and provides them to users using shortest-distance algorithms in the event of such sudden flooding. The proposed system uses QGIS to detect paths using topographical data that generated tracks and pointers. In addition, other shortest paths are detected and provided to users when sudden flooding occurs during evacuation to routes detected through scenarios. Therefore, it is assumed that the proposed system will allow users to safely evacuate from the risk of future disaster safety accidents.
생태계 서비스 가치평가를 위한 산림 유형 분류 방안 - 임상도와 토지피복지도 활용을 중심으로 -
전성우 ( Seong Woo Jeon ),김재욱 ( Jae Uk Kim ),정휘철 ( Hui Cheul Jung ) 한국환경복원기술학회(구 한국환경복원녹화기술학회) 2013 한국환경복원기술학회지 Vol.16 No.3
Some researcher started studies of natural capital from 1980`s. But many researches are going along with the theme lately. Most assessment of ecosystem services are approaching a general assessment using a land-cover map. Therefore they have some problems such as overestimate, underestimate, and double counting, and so on. This study suggested a detailed typology for quantitative assessment about ecosystem services. It compared land-cover map and forest type map to select a based map and made criteria with reference to the literature and field survey. It subdivided a forest typology using ecological feature (natural forest, artifical forest), forest type (coniferous forest, mixed forest, hardwood forest) and age of stand in forest type map. Each forest type is widely distributed 21~40 ages of forests and biggest area is 21~40 ages of mixed forest in all forest typology. Further researches have to progress consistently assessment using detailed typology and function of forest ecosystem services.
전성우 ( Seong Woo Jeon ),천정윤 ( Joung Yoon Chun ),성현찬 ( Hyeon Chan Seong ),송원경 ( Won Kyong Song ),박지희 ( Ji Hee Park ) 한국환경보건기술학회(구 한국환경복원녹화기술학회) 2010 한국환경복원기술학회지 Vol.13 No.5
This study was performed to show criteria of a National Ecological Network (NEN) for South Korea and it was a part of a study of ecological network for broad areas on national land showed by Ministry of Environment of Korea. After 1970s, many european countries presented methods and criteria not on individual protected area but on networking among many habitats. The PEEN (Pan European Ecological Network) and NATURA 2000 are results of those. In South Korea, concepts and mapping metheods of ecological network was studied but those were not applied to the whole national land because the equality and local specialities were not reflected. So, in this study, we presented the criteria composed of forest, river, wildlife and coastal evaluation items in conservation ecology and showed the mapping method which can applied to the national land. After the evaluation on land area which composed of forest, river and wildlife axis. Core areas were 30,616km2, buffer zone were 21,870km2 and each accounted for 31% and 22% of the national land. Except for Taebaeck-Gangwon region, whole region`s core areas were accounted for 20~30% of it and buffer zone were accounted for 20~25% of it, so these can be applied to the national land with equality and local specialities. Forest axis and river axis were clearly linear and connected, but the wildlife axis was dispersed in point form. Therefore, to apply the NEN, a detailed habitat map is important and the interconnected implementation of forest, river, wildlife, and coastal axis is required.
채소정식기의 절삭날에 의한 생분해성 포트의 낙하속도 측정
전성우 ( Seong-woo Jeon ),이건호 ( Gun-ho Lee ),볼라 ( Bhola-paudel ),파우델 ( Nibas-chandra Deb ),니바스찬드라뎁 ( Hyeon-tae Kim ),김현태 한국농업기계학회 2022 한국농업기계학회 학술발표논문집 Vol.27 No.2
농업의 기계화가 진행됨에 따라 벼농사의 기계화율은 97%를 넘어가는 것에 비하여 밭농업 기계화율은 50%에 머물러 있다. 밭농업의 기계화를 위한 작물에 맞는 밭작물 기계를 연구에 관심이 높아지고 있지만, 여전히 농민의 요구에 비해 부족한 상황이다. 밭농업 기계 중 채소 정식기는 기존의 인력 작업속도 보다는 빠르지만 취출시 작물의 뿌리에 손상을 주거나 복토의 파괴 등 문제점이 나타났다. 본 연구의 목적은 생분해성 포트용 채소 정식기의 이식 과정 최적화로 컷팅에 의한 포트의 낙하 속도를 측정하는 실험을 진행하였다. 본 실험에는 임의로 선택된 생분해성 포트를 함수율을 다르게 하여 절삭날의 충격량에 따라 변하는 낙하 속도를 초고속카메라로 촬영하였다. 샘플 포트를 무게측정 한 후 증류수에 5분간 담가둔 뒤 물기를 털고 다시 5분간 담가두는 과정을 30분간 반복 하였다. 이 후 침지 시간을 15분으로 늘리고 이 과정을 240분간 16번 반복하였다. 24시간 25℃에서 침지 하여 최대 수분 흡수를 결정하였다. 생분해성 포트를 건조 시간을 날짜순으로 하여 낙하실험을 진행하였다. 초고속카메라를 사용하여 프레임당 포트가 변하는 위치를 계산해서 낙하 속도를 계산하였다.