Full mouth rehabilitation of a severely worn dentition using intraoral scanner and the CAD/CAM double scanning technique

윤세나,한중석,여인성,윤형인,Yoon, Se-Na,Han, Jung-Suk,Yeo, In-Sung,Yoon, Hyung-In The Korean Academy of Prosthodonitics 2020 대한치과보철학회지 Vol.58 No.1

컴퓨터 지원 설계 제조 기술(CAD/CAM)의 발전에 따라, 완전한 디지털 워크플로우를 구현하기 위한 첫번째 단계인 구내스캐너의 중요성이 높아지기 시작했다. CAD/CAM 이중스캔 기술은 임시 수복물의 외형을 복제하여 최종 수복물에 반영하도록 하는 방법이다. 이 증례에서는 비심미적인 전치부, 중증도의 마모, 수직 고경의 감소를 보이는 67세 남성을 치관 연장술과 수직고경 회복을 동반한 완전구강회복을 통해 치료했다. 임시 수복물은 구내스캐너와 CAD/CAM 이중스캔을 이용해 제작되었다. 적응 기간 후, 최종 단일 구조 지르코니아 수복물을 CAD/CAM 이중스캔을 이용해 임시 수복물을 반영해 제작되었다. With the evolution of the computer-aided design/computer-aided manufacturing (CAD/CAM) technology, the intraoral scanners are playing an increasingly important role, as they are the first step towards a completely digital workflow. The CAD/CAM double scanning technique has been used to transfer the information from provisional restorations to definitive restorations. In this case, a 67-year-old male with esthetically compromised anterior teeth, generalized severe attrition of teeth, and reduced vertical dimension was treated with full mouth rehabilitation including a re-establishment of the lost vertical dimension of occlusion assisted by the crown lengthening procedure. The provisional restorations were fabricated using an intraoral scanner and the CAD/CAM double scanning technique. After the period of adaption, the definitive monolithic zirconia restorations were delivered. The CAD/CAM double scanning technique successfully transferred the occlusal and morphological characteristics, obtained from the provisional restorations, to the definitive restorations.

한국 보자기를 활용한 가변적 패션디자인 연구

윤세나,곽태기 한국의상디자인학회 2022 한국의상디자인학회지 Vol.24 No.2

The Hallyu wave based on K-pop and K-culture has increased the global interest in Korean culture. Therefore, to satisfy consumer demand, there is an attempt to develop a variable fashion design using traditional Korean culture. Transformable fashion design causes changes in form and meaning according to various situations and needs and can induce active participation of consumers. Therefore, we intend to propose a transformable fashion design that is based on traditional Korean culture but appears in a new form and meets the needs of consumers of fashion design. Among Korean traditional culture, wrapping cloths, bojagi are practically used by ordinary people until now, and their shape and use change according to the user's needs. This study intends to derive expression characteristics by examining the expression tendencies of bojagi and to develop transformable fashion designs through the derived data. The purpose of this study is to make and propose transformable fashion designs in real life using the expression characteristics of Korean bojagi. As the method of this study, we first conducted a literature review. Through this, a case study of empirical production was conducted in parallel with the development and production of transformable fashion designs using bojagi. A total of three illustrations and six variable fashion designs were developed. Two of the six works are transformable fashion design that change through movement and expansion of the square shape, the prototype of the bojagi, and two works are modular, bringing changes in function through combination and separation. The work was produced as a multi-purpose transformable fashion design that can be used as clothes or a bag.

디지털 시대 패션 브랜드 버버리(Burberry)의 ‘See now, Buy now’에 대한 연구

윤세나,곽태기 한국의상디자인학회 2020 한국의상디자인학회지 Vol.22 No.2

This study investigated the luxury supply chain management called 'See now, Buy now'. This has been a new way of controlling the supply and demand for luxury brands in the fashion industry since 2016. In this study, we explored the backgrounds and impacts of ‘See now, Buy now’ in the digital era. ‘See now, Buy now’ was launched by the fashion brand, Burberry in February 2016. It was the first luxury brand to showcase its entire collection using ‘See now, Buy now’ among the brands which showcase in Paris, Milan, New York, and London fashion weeks. That has not only caused many controversies in the fashion world but also generated followers. In this study, we analyzed ‘See now, Buy now’ in three aspects, economics, efficiency, and management strategy, and this was done through a literature survey on articles pertaining to ‘See now, Buy now’ and empirical surveys on Burberry's collections. Based on ‘See now, Buy now’, Burberry tried a new process of supply and sale. In the era of SNS, the spread of information is getting faster. The speed of SNS and changes in the fashion market combining IT and mobile technology are major changes faced by the fashion industry. ‘See now, Buy now’, a model of the new supply and demand in luxury fashion brands, should be noted as a new directional aspect for the future of the fashion industry. Since it was a relatively recent trend that started from the September show of Burberry in 2016, there was still a lack of academic discussion or prior research on this phenomenon. Therefore this study aimed to predict future directions by recognizing the importance of ‘See now, Buy now’ in the fashion industry. Also, based on this research, the significance of this study was to present a management strategy that applies ‘See now, Buy now’ to the future of the fashion industry in the digital era.

Inhibition of Cell Proliferation and Migration by miR-509-3p That Targets CDK2, Rac1, and PIK3C2A

윤세나,Eunji Han,최영철,기홍환,정용수,윤재승,백광희 한국분자세포생물학회 2014 Molecules and cells Vol.37 No.4

CDK2 is a key regulator of cell cycle progression. In this study, we screened for miRNAs targeting CDK2 using a luciferase-3-untranslated region reporter assay. Among 11 hit miRNAs, miR-509-3p reduced CDK2 protein levels and significantly inhibited cancer cell growth. Microarray, Western blotting, and luciferase reporter analyses revealed additional targets of miR-509-3p, including Rac1 and PIK3C2A. Overex-pression of miR-509-3p induced G1 cell-cycle arrest and inhibited colony formation and migration. RNAi experiments indicated that the growth-inhibitory effects of miR-509-3p may occur through down-regulation of CDK2, Rac1, and PIK3C2A. Targeting of multiple growth regulatory genes by miR-509-3p may contribute to effective anti-cancer therapy.

배지에서 당근검은잎마름병균의 포자 형성에 영향을 미치는 요인

윤세나,민지영,김흥태 한국식물병리학회 2023 식물병연구 Vol.29 No.3

당근 검은잎마름병을 일으키는 Alternaria dauci의 병원성 검정을 위해서는 양과 질이 우수한 포자를 형성할 수 있는 조건의 표준화가 필요하다. 따라서 본 실험에서는 배지의 종류, 통기 처리, UV 처리 등이 A. dauci KACC42997의 포자 형성에 미치는 효과를 조사하였다. A. dauci KACC42997은 25oC, 암 상태의 PDA 배지에서 7일간 전배양하였다. 배지 상에 나타난 병원균의 공중 균사를 제거하고, 20oC에서 통기 처리와 12시간 주기의 UV 처리를 동시에 실시하며 5일간 배양하였을 때, 가장 많은포자를 형성하였다. 확립 포자 형성 조건에서 평창, 구미, 제주등 당근의 주요 재배지역에서 분리한 170개의 다양한 A. dauci 균주가 포자를 형성하는지의 여부를 확인한 결과, 20개 균주가포자를 형성하지 못하였고, 88.2%의 균주는 포자를 형성하였다. 또한 지역 균주 집단 간의 포자 형성량에는 차이가 있었지만, 당근에 대한 병원성에는 차이가 없었다. In order to examine the pathogenicity of Alternaria dauci, the causal agent of carrot leaf blight, it is necessary to standardize sporulation conditions to ensure the optimal quantity and quality of spore inoculum. Therefore, in this study, the effects of the growth medium, aeration treatment, and UV treatment with 12-hr photoperiod on the sporulation of A. dauci KACC42997 were investigated. A. dauci KACC42997 was pre-cultured for 7 days in a potato dextrose agar medium at 25oC in the dark condition. When the pre-culture, after removing aerial mycelia, was re-incubated for 5 days, with simultaneous aeration treatment and 12-hr cycle UV treatment at 20oC, the largest number of spores was produced. One hundred seventy isolates of A. dauci were isolated from major carrot growing regions such as Pyeongchang, Gumi and Jeju and tested for sporulation under the conditions established in this study. Except for 20 strains, all strains produced spores. Statistically significant differences in the extent of sporulation were found among local populations of A. dauci isolates, but no difference was observed in their pathogenicity on carrots.

하악 전치부에서의 일체형 임플란트 식립 후 즉시부하

윤세나,Yoon, Sena 대한심미치과학회 2018 Journal of the Korean Academy of Esthetic Dentistr Vol.27 No.2

하악 전치부는 다른 구강 내 영역에 비해 높은 임플란트 성공률과 더 나은 접근성을 갖고 있다. 비록 부적절한 드릴링으로 인한 설측 피질골 천공 가능성과 설동맥 손상으로 인한 출혈 가능성이 있더라도 다른 부위와 비교했을 때 주요 해부학적 구조물이 적기 때문에 상대적으로 안전하다. 또한 상악 전치부와 비교했을 때 환자들이 심미적으로 덜 민감한 부위이다. 그러나 좁은 협설측 치조골 폭 때문에 이상적인 임플란트 식립 위치로의 식립은 상악 전치부만큼 어렵다. 이러한 하악 전치부에서 일체형 임플란트는 매우 유용한 치료방법이다. 하악 전치의 해부학적 치근형태와 얇은 치조골을 고려할 때, 임상적으로 3mm보다 큰 직경의 임플란트 식립은 어렵다. 본 증례는 하악 전치부 무치악 부위에서 일체형 임플란트의 식립과 즉시 부하를 동반하여 심미적인 보철물을 구현한 경우이다. Mandibular anterior region has high implant survival rates and better accessibility compared with any other region. Even if there are possibilities for perforation on lingual cortical bone due to improper drilling and bleeding caused by lingual artery damage, mandibular anterior region is a safe region because less amount of major anatomical structures exist compared with other regions. However, because of narrow bucco-lingual width of alveolar ridge, it is challengeable to obtain esthetic implant prosthesis. Although patients are less sensitive subjectively, mandibular anterior region is as difficult as maxillary anterior region in that implant placement location plays a critical role on the prognosis of implant prosthesis. One-piece implant is a very useful option for mandibular anterior region. Considering the narrow roots and thin alveolar bone of mandible, it is clinically difficult for implant diameter to be greater than 3mm In this case, we could approach the esthetic restoration in mandibular anterior region with one-piece implant and immediate loading.

하늘소리 일기

윤세나 한국여신학자협의회 2008 한국여성신학 Vol.- No.67

북한 ‘지방경제’의 발견과 평가: 시장화 흐름을 중심으로

윤세라 비판사회학회 2023 비판사회학회 학술대회 자료집 Vol.2023 No.4

統合敎科書의 分析을 통한 問題點과 改善方案

윤세라 숙명여자대학교 대학원원우회 1990 원우논총 Vol.8 No.-

The integrated textbook project in Korea has been developed continually since the 4th Curriculum Reform in 1981. The 5th Curriculum Reform as a try to get rid of sequent problems followed by the curriculum integration management as; lack of consistency in goals, contents, instruction and evaluation which are resulted from integrating textbooks when the curriculum were organized segmently; biased instruction in some courses from excessive integration; and short of understanding in integrated instruction and segmental teaching in educational field, and so on. There are some certain features of the 5th Curriculum Reform: On the distribution of curriculum and class hour allocation, integrated curriculum was newly provided in the 1st and 2nd grade elementary school courses. The Korean and arithmetic in those grades separated independently from the integrated textbooks. Increasing annual class hours, rationally controlled weekly class hours and the realization of extra curriculum hour operation were one of the features. There has been a lot of improvement in the integrated textbook contents as well. Thanks to the theoretical, practical researches and the acting teachers' opinions about the integrated textbooks, real changes have been made in the theory and practice. Nonetheless, there are quite many unsolved problems brought down by the lack of recognition about the integrated curriculum and textbooks; by parents' insufficient understanding and partial teachers' short of respect toward students during the integrated curriculum course work; and by other various factors. The purpose of research is to bring forth effective management of the integrated textbooks, by demonstrating problems of them and suggesting a few improvement measures. First, current integrated textbooks do not wholly exclude the test-centered education atmosphere, which are produced in the base of conventional curriculum. Therefore, sufficient researches about the vertical and cross relationship in the curriculums are needed. Second, teachers should be able enough to establish to the original educational purposes by operating integrated textbooks. Third, to regard the nation's education finance, it is impossible to reform the unreasonable environment of education at once. However, it is most urgent to reduce student numbers in a class and to expand the classroom size. Forth, instructing manuals for teachers must demonstrate educationed philosophy and ideology underlying as well as concrete teaching methods in order for teachers to recognize enough. Fifth, integrated textbooks now in use have many parts intermingling each other. So it is needed to reorganize the textbooks attaching importance to interests, functions and activities. There might be other issues about superficial system of textbooks and how to reapply the textbooks.

만곡수로에서 2차원 흐름해석

윤세의,이종태,이원환,Yoon, Sei Eui,Lee, Jong Tae,Lee, Won Hwan 대한토목학회 1986 대한토목학회논문집 Vol.6 No.1

Under natural condition, many rivers had shallow and gently curved shape in plane. A two dimensional mathematical model of the flow was a very attractive one. The flow characteristics in bended open channels were analyzed. The mathematical model based on the mass and the momentum equation of the two-dimensional unsteady flow was developed by introducing finite difference method and the double sweep algorithm. For the purpose of the verification of this model, the modeling results were applied to the L.F.M flume and the I.I.H.R flume. The results had a good agreement with the experimental data of the flumes. The results could be more close to the experimental data by controlling Chezy Coefficients in order to reduce the effect of friction around side wall, and be studied the importance of the convective term. The water surface profile, the direction and scale of depth average mean velocity and the path of the thread of maximum velocity in bended open channels could be computed. 일반적으로 자연하천은 수심에 비해 하폭이 크고 완만한 곡률을 나타내므로 2차원 수치모형이 실용적인 것으로 알려져 있다. 본 연구에서는 만곡수로의 흐름특성을 분석하기 위하여 2차원 부정류의 운동방정식과 연속방정식을 차분화하고 Double Sweep 알고리즘에 의한 수치해석모형을 개발하였다. 본 모형의 적용성을 입증하기 위해 L.F.M 실험수로 및 I.I.H.R 실험수로의 실측치와 비교하여 비교적 잘 일치함을 확인할 수 있었다. 벽면마찰의 영향을 감소시키기 위하여 Chezy 계수의 적절한 조정으로 실측치에 더욱 접근된 결과치를 얻을 수 있었으며, 이류항의 영향을 분석하였다. 만곡수로내의 수면형태, 최대유속선이 이동경로 및 깊이방향 평균유속의 크기와 방향을 계산할 수 있었다.