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      • KCI등재

        변형과 온도의 동시 측정을 위한 삼중 광섬유격자 센서

        윤지애,윤재순,백세종,임기건 한국물리학회 2011 새물리 Vol.61 No.9

        변형과 온도를 동시에 측정하기 위하여 단일 광섬유격자와광섬유격자쌍으로 구성된 삼중 광섬유격자 센서를 제안하였다. 광섬유격자쌍은 두 개의 동일한 격자로 구성되어 두 격자의 간섭효과에의해 작은 파장 폭을 갖는 피크들로 구성되는 스펙트럼 특성을 가졌다. 이러한 특성을 이용하여 단일 격자보다 잡음에 강하고, 높은 정확도의파장 변화 측정이 가능하다. 또한, 두 격자 사이의 간격 변화에 따른스펙트럼 패턴의 주파수 변화를 활용하여 센서에 다중화 기능을 부여할수 있다. 전달행렬법(Transfer Matrix Method, TMM)을 이용하여 삼중광섬유격자 센서의 반사 스펙트럼을 계산하고, 변형과 온도에 따라선형적으로 이동하는 스펙트럼 특성을 컴퓨터 모의실험을 통하여확인하였다. 또한 전달행렬법과 Nelder-Mead Simplex 알고리즘을 사용한최적화 프로그램을 통하여 온도와 변형을 찾는 디모듈레이션을수행하였다. 위상마스크 방법을 이용하여 삼중 광섬유격자 센서를제작하여, 온도와 변형에 따른 스펙트럼 특성을 확인하였다. 본실험에서의 광섬유격자 쌍의 온도 민감도는 8pm/℃이며,단일격자의 변형 민감도는 1.2 pm/με 임을 보였다. 이론적계산오차는 온도는 0.003℃이하, 변형에 대해 0.2με에서 결정할 수 있었고 실험적 오차는 온도는 1.85℃이하, 변형에 대해 31.35με로 결정할 수있었다. We propose a triple fiber Bragg grating (FBG) sensor for simultaneous measurement of strain and temperature. The sensor consists of a single FBG and a twin FBG. The twin FBG consists of two identical gratings separated by a short distance. The reflectance spectrum has a multi-peaked structure due to the interference of the beams reflected from the two gratings. By employing a twin FBG, we can obtain high-accuracy in the measurement of wavelength shift. A computer simulation of the reflectance spectrum of the triple FBG sensor was performed. The Bragg wavelength changed linearly with both strain and temperature. The transfer matrix method (TMM) and the Nelder-Mead simplex algorithms were utilized in the optimization procedure. We fabricated a triple FBG sensor by using the phase mask method to confirm its feasibility for simultaneously measuring the strain and the temperature. The sensitivities for the temperature and the strain were experimentally measured to be 8pm/℃ and 1.2pm/με,respectively. The measurement accuracies were better than 10^(-3)℃ and 0.2με, respectively. The temperature and the strain were simultaneously measured within errors of 1.85℃ and 31.35με, respectively, by using the optimization procedure.

      • KCI등재

        Redispersible Freeze-dried Quercetin-loaded Liposomal Formulations Stabilized with Lyoprotectants

        윤지애,Iqra Haleem,김형민,윤새미,박기환,이재휘 대한화학회 2019 Bulletin of the Korean Chemical Society Vol.40 No.6

        Enhanced physical stability of quercetin-loaded liposomes redispersed in water after freeze-drying through four different saccharides used as lyoprotectants.

      • KCI등재

        Phendimetrazine 사용으로 유발된 정신증적 장애 및 의존 1예

        윤지애,박우리,유제춘,최경숙 대한신경정신의학회 2013 신경정신의학 Vol.52 No.5

        식욕억제제의 대부분은 amphetamine 계통으로 정신증적증상 및 의존의 위험성이 있다. 본 증례의 25세 여성은 phendimetrazine을복용한 이후 정신증적 증상이 발생하여 입원치료를 했지만, 퇴원 후에 다시 phendimetrazine을 복용하게되었다. 결국 정신증적 증상이 재발하였고 더불어 약물에 대한 금단증상과 갈망을 나타내어 phendimetrazine에 대한 의존을 확인할 수 있었다. 최근 국내에서 식욕억제제의 사용이증가하고 있으며, 이러한 부작용의 발생은 더 증가하리라 예상된다. 이러한 위험성을 충분히 고려하여 식욕억제제 처방과 사용에 대한 세심한 주의와 엄격한 지침이 필요하겠다. Phendimetrazine and related amphetamine-like compounds are used widely as appetite suppressants in Korea. We report on a patient who developed psychotic disorder and dependence while using phendimetrazine. A 25-year-old female with no psychiatric history began experiencing hallucination of bugs after using phendimetrazine for weight loss for five months. She was admitted and the drug was stopped. Three days later, her psychotic symptoms had subsided and she returned home. Two months after discharge, against medical advice, she returned to a clinic to obtain phendimetrazine for its anorectic effect. She continued using phendimetrazine because she had developed withdrawal symptoms and experienced cravings for it. Within two months of restarting the drug, she had developed paranoid delusions, auditory and olfactory hallucinations. She was readmitted, and was confirmed to have a dependence on phendimetrazine. This case provides a warning that amphetamine-related anorectics can cause psychotic disorder and dependence.

      • KCI등재

        어린이 디자인 창의력 교육의 실태 및 개선방안에 관한 연구

        윤지애,박규원 한국브랜드디자인학회 2013 브랜드디자인학연구 Vol.11 No.1

        서울의 2010년 세계 디자인 수도 선정 등 미래사회에서 디자인 가치는 날로 증대되어 이에 대한 교육 필요성 인식이 확대되고 있다. 이로 인해 ‘서울시 어린이 디자인 창의력 캠 프’ 등 정규, 비정규 교육기관에서 어린이 대상의 교육프로그 램들이 실시되고 있다. 그간 어린이 디자인 창의력 캠프는 해 마다 참가자 증가와 이슈화되고 있다. 그러나 디자인 창의력 교육 필요성의 보편적 인식에 비해 그 효과는 얼마나 증대되 었는지 분명히 밝히기 어려운 것이 현실이다. 디자인 행위는 문제점들의 효과적 해결방법을 제공하는 사고의 과정으로서 모든 생활 영역에서 가치 있는 결과물을 제시하는 활동이라 하겠다. 본 연구는 어린이 스스로 문제점 을 해결하려는 창의적 의도로써 디자인 활동이 효과적이라는 점에 주목하여 국내외에서 진행되고 있는 어린이 디자인 창 의력 교육 사례를 조사하고 교육프로그램들에 대한 현황과 그 특성들을 분석하였다. 연구의 목적은 국내외에서 진행되고 있는 다양한 창의적 디자인 교육 및 문화예술교육에 대한 특성과 비교 분석, 장단 점을 파악하고 이를 바탕으로 국내 어린이 창의력 증진을 위 한 디자인교육의 미래 방향성 제시에 있다. 연구 결과 창의력은 지속적 학습을 통해 개발할 수 있는 능력이며 어린이의 다양한 성장요소로서 디자인 및 예술교육 은 큰 영향을 미친다는 점을 선행연구를 통해 규명했다. 이 가운데 디자인 교육의 방향성은 문제 해결능력, 교구의 개발, 통합적 예술교육으로 크게 설정될 수 있었다. 국내외 사례 비 교 분석 결과 3가지 항목 만족성이 높은 해외 사례와는 달리 단순히 결과물 만들기와 그리기에 집중한 디자인 활동에서 벗어나지 못하는 국내 사례는 큰 차이점을 보였다. 향후 어린이 창의력 향상을 위한 디자인 교육을 위해서는 해외의 철저한 프로그램, 교구개발, 문화교육에 주목할 필요 성이 크다. 아직 어린이 창의성교육에 대한 충분한 검증이나 심층 연구가 전 세계적으로 충분한 것은 아니기 때문에 조속 히 국내 디자인 교육 프로그램에 대한 연구와 조사분석이 지 속적으로 이루어져야 할 것이다. And selection of World Design Capital in 2010 in Seoul, the value of the design is increasing in the society of the future, for this recognition of the need for education is gr owing. As a result, children's educational programs have been implemented to be legitimate, such as Children's C amp Creativity Design Seoul, non-formal education insti tutions. Meanwhile, every year, children's camp design c reativity has become a hot topic and the increase of the participants. But obviously difficult obviously its effects have been improved compared to how much the universal recognition of the need for sex education is the creation of a design reality. The course of the accident as to provide an effective sol ution to the problem, the design is said to conduct activiti es to present the results of value in all areas of life. Inves tigate the case of education creativity design children to note design activities that are effective as intended creati ve you are trying to solve the problem themselves childre n, has been promoted at home and abroad, this study, edu cational program I analyzed the current situation and its characteristics of Comparative analysis of the characteristics of arts educ ation and cultural education design creative variety has b een promoted both at home and abroad, to understand the pros and cons, based on this, the objective of the researc h is to promote the creativity of children of domestic pres ented in the future direction of design education. We have identified in previous research findings point creativity is the ability to always be developed through learning, design and arts education as growth factors tha t have a major impact on a variety of children. Among these, the direction of design education, I was able to set higher problem-solving skills development, Diocese of, in tegration and arts education. The results of comparative analysis, and case studies of foreign highly satisfied with the items of the three different cases at home and abroad, the case in Japan that do not escape from design activitie s that focus on drawing creation and the results just sho wed a big difference. In order to design education for improving children's cr eativity, attention needs to be a thorough program of ove rseas development of the parish, to cultural education is greater in the future. Research and detailed enough to val idate the creation of children's sex education is not suffic ient because the world still, today, research and analysis of national research and education program design should be conducted on an ongoing basis.

      • KCI등재

        기능 안전성을 위한 대칭형 각도센서 보상기에 기반한 안전한 적응형 전조등 제어기의 설계

        윤지애,인멍디,안중현,조정훈,박대진,Youn, Jiae,Yin, Meng Di,An, Junghyun,Cho, Jeonghun,Park, Daejin 대한임베디드공학회 2015 대한임베디드공학회논문지 Vol.10 No.5

        AFLS (Adaptive front lighting System) is being applied to improve safety in driving automotive at night. Safe embedded system for controlling head-lamp has to be tightly designed by considering safety requirement of hardware-dependent software, which is embedded in automotive ECU(Electronic Control Unit) hardware under severe environmental noise. In this paper, we propose an adaptive headlight controller with newly-designed symmetric angle sensor compensator, which is integrated with ECU-based adaptive front light system. The proposed system, on which additional backup hardware and emergency control algorithm are integrated, effectively detects abnormal situation and restore safe status of controlling the light-angle in AFLS operations by comparing result in symmetric angle sensor. The controlled angle value is traced into internal memory in runtime and will be continuously compared with the pre-defined lookup table (LUT) with symmetric angle value, which is used in normal operation. The watch-dog concept, which is based on using angle sensor and control-value tracer, enables quick response to restore safe light-controlling state by performing the backup sequence in emergency situation.

      • KCI등재

        지역사회 우울증 개입에서 사회적 자본의 중요성

        윤지애,김지훈,유정아,유제춘,최경숙 대한신경정신의학회 2024 신경정신의학 Vol.63 No.1

        Social capital, defined as an individual’s social relationships and participation in community networks, encompasses resources, such as the exchange of favors, maintenance of group norms, stocks of trust, and exercise of sanctions available to members of social groups. Social capital may lower the risk of mental disorders while increasing the resilience capacity, adaptation, and recovery. Interventions targeting social capital may offer a cost-effective approach to preventing and ameliorating these conditions. This study evaluated the concept and importance of social capital because mental well-being is influenced by individual characteristics, the socioeconomic situation, and broader environmental factors to which individuals are exposed. Recognizing the growing significance of social capital in this context, the study examined its role, its relationship with depression, and the potential importance of social capital in South Korea. Although the definition of social capital is broad, the emphasis is placed on the role of linking social capital. Moving beyond an individual-centric perspective on identifying the factors contributing to depression, this paper suggests that social capital can serve as a crucial starting point for changing the environment to which individuals belong, i.e., structural and intermediary determinants. In the macrolevel perspective of mental health intervention, this paper proposes the need to attribute significance and awareness to numerous studies already implemented in various local communities through social capital.

      • KCI등재

        글꼴 유사도 판단을 위한 한글 형태소의 글자 크기별 영향력 검증 및 분석

        윤지애,송유정,전자연,안병학,임순범 한국멀티미디어학회 2022 멀티미디어학회논문지 Vol.25 No.8

        Recently, research using image-based deep learning is being conducted to determine similar fonts or recommend fonts. In order to increase the accuracy in judging the similarity of Hangul fonts, a previous study was conducted to calculate the similarity according to the combination of stroke elements. In this study, we tried to solve this problem by designing an integrated model that reflects the weights for each stroke element. By comparing the results of the user's font similarity calculation conducted in the previous study and the weighted model, it was confirmed that there was no difference in the ranking of the influence of the stroke elements. However, as a result of comparison by letter sizes, it was confirmed that there was a difference in the ranking of the influence of stroke elements. Accordingly, we proposed a weighted model set separately for each font size.

      • KCI등재

        미하일 바흐친(Mikhail Bakhtin) 카니발이론의 유희성을 중심으로 본 베트멍(Vetements)의 패션 밈 특성

        윤지애 ( Jiae Yun ),박혜원 ( Hyewon Park ) 한국패션비즈니스학회 2021 패션 비즈니스 Vol.25 No.2

        The development of the Internet has led to the emergence of an internet meme culture using duplication. This phenomenon has appeared in the fashion field as ‘fashion memes’ and its playful expression has helped it to spread. Vetements is one of the well-known brands that actively incorporates fashion memes into their fashion. The purpose of this study was to examine the playfulness of Mikhail Bakhtin’s Carnival Theory and identify the playful identity, design characteristics, and implications of Vetements’ fashion memes in light of Bakhtin’s playfulness. The research methods were literature research and collection case analysis, and empirical content research was conducted in parallel. The scope of this study was fashion memes shown in the products from 2017 S/S to 2019 F/W. The study results showed that Bakhtin's playfulness could be divided into “playfulness in the destruction of hierarchy”, “playfulness in grotesque imagery” and “playfulness in the emphasis on the lower bodily stratum”. Based on these findings, the playful identity of Vetements’ fashion meme images can be described as follows. First, it breaks down the existing order of fashion brands like the destruction of hierarchy in Bakhtin’s theory. Second, it is grotesque; it is strange, eerie, yet ridiculous at the same time. Third, it is a playful metaphor of contamination, filth, and lower stratum. The modes of embodiment of such identity include Vetements’ collaboration with famous brands, the use of cheap items, and the expression of genderless ideas.

      • KCI등재SCOPUS

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