사례분석을 통한 말뚝재하시험 계획 및 설계 적용

서지원,김정환,이충숙,Seo, Ji-Won,Kim, Jeong-Hwan,Lee, Chung-Suk 한국지반공학회 2009 지반 : 한국지반공학회지 Vol.25 No.9

디스플레이형 자판기 사용자 분석을 위한 이중 단계 검출 및 분류 망

서지원,김미경,Seo, Ji-Won,Kim, Mi-Kyung 한국정보통신학회 2022 한국정보통신학회논문지 Vol.26 No.5

Machine learning techniques using visual data have high usability in fields of industry and service such as scene recognition, fault detection, security and user analysis. Among these, user analysis through the videos from CCTV is one of the practical way of using vision data. Also, many studies about lightweight artificial neural network have been published to increase high usability for mobile and embedded environment so far. In this study, we propose the network combining the object detection and classification for mobile graphic processing unit. This network detects pedestrian and face, classifies age and gender from detected face. Proposed network is constructed based on MobileNet, YOLOv2 and skip connection. Both detection and classification models are trained individually and combined as 2-stage structure. Also, attention mechanism is used to improve detection and classification ability. Nvidia Jetson Nano is used to run and evaluate the proposed system.

4세 이상의 부분조절내사시에서 수술방법에 따른 결과 비교

서지원,이주연,백혜정,Ji Won Seo,Joo Yeon Lee,Hae Jung Paik 대한안과학회 2013 대한안과학회지 Vol.54 No.7

Purpose: To compare postoperative outcomes according to surgical method in partially accommodative esotropia in patients over 4 years of age. Methods: We compared motor and sensory outcomes between conventional and augmented surgery in 66 patients. The postoperative follow-up period was at least 24 months. The formula for the amount of the rectus muscle recession was based on the distant angle deviation after hyperopic correction in the conventional group and the average amounts of the distant angle deviation with and without full correction of hyperopia in the augmented group. In addition, the conventional group was divided into 2 sub-groups to compare surgical outcomes. The A group consisted of patients who underwent surgery with the amount of surgical correction based on distant angle deviation after full hyperopic correction. The B group consisted of patients under the same condition after reduced hyperopic correction to achieve best corrected visual acuity (BCVA). Results: Among the patients who had an ocular alignment less than 10 PD, orthophoria was significantly higher in the conventional group than in the augmented group on the last follow-up. When comparing the 2 conventional sub-groups, the postoperative stereoacuity was better in group B than in group A. Among patients with a postoperative overcorrected alignment of more than 10 PD who underwent augmented surgery, 75% showed decreased postoperative stereoacuity compared to preoperative stereoacuity. Conclusions: In partially accommodative esotropia in patients over 4 years of age, conventional surgery compared to augmented surgery after reduced hyperopic correction is better in order to achieve BCVA for postoperative stereoacuity as well as ocular alignment.

중년 무배우남성의 생활만족도에 대한 인적자본과 사회자본의 효과 분석 : 1인가구와 다인가구의 비교를 중심으로

서지원,이수진,Seo, Jiwon,Lee, Sujin 한국가족자원경영학회 2021 가족자원경영과 정책 Vol.25 No.4

The life of middle-aged one-person households is rising as one of the most important family policy issues in Korean society. In Japan, even in multi-person households, the issues of middle-aged sons and daughters living with their old parents have been a concern. Data are from the 13^th wave of the Korea Welfare Panel Study analyzing 482 middle-aged singe males regardless of their past marital status. The purpose of this study is to investigate the effects of human capital and social capital on the life satisfaction of middle-aged single persons by comparing one-person and multi-person households, respectively. Major results were as follows: First, the level of human capital of one-person households of middle aged males was lower than their counterparts in multi-person households. Second, the level of social capital in the group of divorced or widowed, nonhouseholder middle-aged males in multi-person households was lower than their counterparts in one-person households. Third, the effects of human capital and social capital on life satisfaction was significantly different by their marital status and household types in the group of middle-aged single males. Based on the results, policy implications on the community programs for middle-aged males including not only one-person households but also multi-person households were discussed.

이차성 부갑상선 기능항진증과 연관되어 발생한 상완골의 갈색종 1예

서지원,고태경,홍종철,박헌수,Ji Won Seo,Tae Kyung Koh,Jong Chul Hong,Heon Soo Park 대한갑상선-내분비외과학회 2013 The Koreran journal of Endocrine Surgery Vol.13 No.2

Brown tumor is a bone disease that arises in the setting of increased osteoclastic activity and fibroblastic proliferation in the involved bone. It is well recognized as serious complication of hyperparathyroidism. Brown tumor is uncommon, and brown tumor with secondary hyperparathyroidism resulting from chronic renal failure has rarely been reported. We recently experienced a case of a 28-year-old Korean woman with chronic renal failure caused by chronic glomerulonephritis, on hemodialysis for nine years. She has been hospitalized with left shoulder pain for two years. Image studies showed multiple cystic masses, and both suspicious marked thinning and partial destruction of the cortex on the head of the left humerus. Histopathologic analysis of the mass lesion showed a fibrotic capsule, hemosiderin pigmentation, and giant cell, all characteristic of brown tumor. A subtotal parathyroidectomy was done without surgery of the bony lesion (brown tumor), with successful results. We report this case with a brief review of the literature.

청년 1인가구의 성별 생활시간 사용구조와 주관적 시간빈곤: 부부가구와의 비교를 중심으로

서지원,양진운,Seo, Jiwon,Yang, Jinwoon 대한가정학회 2017 Human Ecology Research(HER) Vol.55 No.5

Recently, increasing one-person households, especially in the young generation, is one of the most important issues reflecting changes in the Korean family and society. The purpose of this study is to examine gender differences in life time use of one-person households aged 25 to 39, comparing with husband-wife couples of the same ages, and to investigate the determinants of subjective time poverty. Data are from the 2014 Life Time Survey by Statistics Korea. The major results are as follows. First, gender differences in time use of single youths were found in home management hours on weekdays. Female one-person householders spent more time in home management than their male counterparts, while male one-person householders spent more time in home management than young husband-wife groups. In addition, a much larger gender difference was found between young husbands and wives. Second, different effects on the subjective time poverty were found in both the groups. Based on these results, the implications for several specialized education and social programs for male and female one-person householders used in the local healthy families support centers are provided.

Moter절전기 사용효과

서지원,Seo, Ji-Won 한국설비기술협회 1987 설비 : 공조ㆍ냉동ㆍ위생 Vol.4 No.5

만나고 싶었습니다-한국사회복지사협회 제16대 김 성 이 회장

서지원,Seo, Ji-Won 한국사회복지사협회 2005 Social workers Vol.4 No.-

DBC ditor: 데이터 베이스 컴포넌트 에디터

서지원 ( Ji-won Seo ) 한국정보처리학회 2014 한국정보처리학회 학술대회논문집 Vol.21 No.2

다수의 개발자들이 참여하는 프로젝트에서 개발자들의 의해 동일한 기능유사한 코드가 생성된다. 이것은 시스쳄 전체적으로 중복 코드가 생성되어 시스템 성능에 영향을 준다. 또한 개발자의 능력에 따라 화며늬 응답속도 및 제이터베이스 처리 속도에 타이가 나게 되어 결국 시스템에 악영향을 끼티게 된된다. 이러한 문제는 개발자들의 의사소통을 위한 표준개발 도구를 활용함으로써 헤결가능 하다. DBC Editor 는 이클립스 플러그인 기반으로 기동되어 OS 에 영향을 받지 않고 기느별로 독립적인 플러그인을 구성하여 확장 가능하다. 또한쿼리만을 관리하므로 시스템이 유연해지며 개발자들은 표준화 된 코드개발이 가능하여 개발 생산성을 향상시킬수 있다.

화장품 소재로서 순창 베리류 유래 Sacchromyces cerevisiae FT4-4의 항산화 활성 및 미백 효과

서지원(Ji won Seo),류명선(Myeong Seon Ryu),양희종(Hee-Jong Yang),정수지(Su-Ji Jeong),정도연(Do-Youn Jeong) 한국생명과학회 2021 생명과학회지 Vol.31 No.2

기능성 화장품 소재로서 활용할 수 있는 효모의 분리를 위하여 순창군 베리류 및 과수원 토양에서 분리주 80종을 1차로 선별하였다. 80종의 분리주를 대상으로 항산화 활성 및 tyrosinase 저해 활성을 측정한 결과 DPPH 라디칼 소거능은 51.41%, SOD 활성은 62.23%, tyrosinase 저해 활성 64.75%로 가장 우수한 FT4-4를 최종적으로 선별하였다. 18S rRNA 염기서열 분석을 통해 Saccharomyces cerevisiae FT4-4로 명명하였으며, API ZYM을 이용하여 세포외 효소 활성을 추가로 측정하였다. 발효 시간에 따른 균체 성장 및 tyrosinase 저해 활성의 변화를 측정한 결과 배양 후 16시간에 최대 균체량인 3.16 g/l와 67.68%의 tyrosinase 저해활성을 나타내었다. 또한, S. cerevisiae FT4-4의 화장품 소재로 활용하기 위한 세포 독성과 melanoma B16F10 세포 멜라닌 억제능을 확인한 결과, 세포독성은 50 mg/ml 이하의 농도에서 100% 이상의 세포 생존율을 보였으며, 시료 10 mg/ml에서의 멜라닌 생합성 저해능은 72.02%로 측정되었다. 향후 FT4-4의 화장품 소재로 활용하기 위해서는 생산 수율을 증가하기 위한 생산조건 확립 이외에도 안전성을 향상시키기 위한 추가적인 독성연구 등 다양한 연구가 수반되어야 하나, 본 연구에서의 항산화 및 미백 효능만으로도 충분히 활용할 가치가 있는 소재로 사료된다. Saccharomyces lysate has the well-known function of soothing the skin in various ways: it is an anti-irritant and can treat skin care conditions, such as skin whitening and antioxidative activity. However, data on the safety for use of Saccharomyces lysate in cosmetics and skin care products are still limited. To design a new cosmetic material with antioxidant and skin-whitening effects, 80 yeast strains were isolated from berries grown in Sunchang. Among the isolates, the FT4-4 strain, which exhibited superior biological activities, was selected for further experiments. The FT4-4 strain was identified as Saccharomyces cerevisiae by 18S rRNA gene sequencing analysis. S. cerevisiae FT4-4 showed higher DPPH radical-scavenging (51.41%), superoxide dismutase (62.23%), and tyrosinase inhibition (64.75%) activities. The highest yield of biomass (3.16 g/l) and maximum growth rate of S. cerevisiae FT4-4 were observed within 16 h. Furthermore, the cytotoxicity potential of S. cerevisiae FT4-4 on B16F10 melanoma cells was measured by an MTT assay, and the results indicated that S. cerevisiae FT4-4 had a capacity to inhibit melanin up to 72.02% at an initial 10 mg/ml concentration. These results suggest that S. cerevisiae FT4-4 could be a promising candidate as a multi-functional material for application in the cosmetic industry, especially because of its antioxidant and skin-whitening effects.