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검색결과 406건 처리시간 0.023초

An Automatic Strabismus Screening Method with Corneal Light Reflex based on Image Processing

  • Huang, Xi-Lang;Kim, Chang Zoo;Choi, Seon Han
    • 한국멀티미디어학회논문지
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    • 제24권5호
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    • pp.642-650
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    • 2021
  • Strabismus is one of the most common disease that might be associated with vision impairment. Especially in infants and children, it is critical to detect strabismus at an early age because uncorrected strabismus may go on to develop amblyopia. To this end, ophthalmologists usually perform the Hirschberg test, which observes corneal light reflex (CLR) to determine the presence and type of strabismus. However, this test is usually done manually in a hospital, which might be difficult for patients who live in a remote area with poor medical access. To address this issue, we propose an automatic strabismus screening method that calculates the CLR ratio to determine the presence of strabismus based on image processing. In particular, the method first employs a pre-trained face detection model and a 68 facial landmarks detector to extract the eye region image. The data points located in the limbus are then collected, and the least square method is applied to obtain the center coordinates of the iris. Finally, the coordinate of the reflective light point center within the iris is extracted and used to calculate the CLR ratio with the coordinate of iris edges. Experimental results with several images demonstrate that the proposed method can be a promising solution to provide strabismus screening for patients who cannot visit hospitals.

시조에 나타난 가을철 사대부의 여가활동 (The Leisure-Activity on Scholar-Sijo in the Autumn Season)

  • 류해춘
    • 한국시조학회지:시조학논총
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    • 제23집
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    • pp.49-69
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    • 2005
  • 본고는 시조를 통해서 나타난 가을철 사대부의 여가활동을 분석하여 우리 민족이 누렸던 여가문화의 한 단면을 살펴보는데 그 목적이 있다. 최근 우리나라에서는 여가생활이 국민들 사이에 새로운 문화코드로 떠오르면서 웰빙(well-being)이 주목을 받고 있다. 웰빙이란 물질의 가치나 명예를 얻기보다는 신체와 정신이 건강한 삶을 행복의 잣대로 삼는 것을 의미한다. 그러므로 웰빙은 육체 건강과 마음의 안정을 최우선 가치로 한다. 최근에는 웰빙이 여가산업의 한 분야로 변질되면서 상류층의 문화로 왜곡되고 있다고 한다. 하지만 진정한 여가활동은 경제력을 바탕으로 잘 먹고 잘 살고 폼 나게 사는 것이 아니라, 정신적 만족을 통해 행복을 느끼며 사는 것이라 할 수 있다. 이러한 생활은 우리나라의 사대부들이 어지러운 세상을 만나 자연과 벗하며 자연의 질서를 존중했던 것과 비슷하다고 할 수 있다. 조선시대 사대부들은 고약한 세상을 만나면 산림이나 고향으로 돌아와 자연과 함께 하면서 시조나 가사를 지었다. 시조는 어느 계절에 창작되느냐에 따라 그 소재와 주제가 달라진다. 본고에서는 가을철을 소재로 하고 있는 시조를 통해서, 지금 우리 사회에 화두가 되고 있는 웰빙의 정신과 비슷한 자연의 완상과 건강하고 소박한 삶, 그리고 정신적으로 행복한 삶 등을 살펴보려고 한다. 이들 시조는 사대부들이 체험한 여가활동의 양상으로 가을의 정취와 한가로운 삶, 즐거운 생활과 건강식의 향유, 그리고 가을걷이와 행복의 추구 등으로 나누어진다. 주5일 근무제가 시행되고 있는 현대를 살아가고 있는 우리들은 및 시조에 나타난 여유와 느림의 미학에 바탕을 둔 사대부의 가을철 여가활동을 음미해봄으로써 심신이 골고루 건강한 여가활동을 즐겨야 할 것이다.

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공간주시특성의 유형화를 위한 시간범위설정에 관한 연구 (A Study on the set-up of Time Range for Typology of Space Observation Characters)

  • 김종하;정재영
    • 한국실내디자인학회논문집
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    • 제21권4호
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    • pp.87-95
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    • 2012
  • This study is for the analysis to which element of space the users observing the lobby at a public space pay more attention for their visual perception. It is focused on the typology process of observation characters. The subjects, in the observation process, came to be interested in the circumstantial clues for space perception and the detailed characters drawing their interest. I could analyze the observation characters of the subjects observing the space by the comprehension and typology of their observation characters. First, from the viewpoint of successive 9 times of observations, each subject observed for 0.32 second to get the visual perception in the applied space, but spent another 0.39 second for the exploration of another observation object or the space roaming. The observation character of the subjects at the lobby of the public space selected for this experiment was that they spent more time on space exploration than on concentration on a point in the space. Second, I analyzed the typology process through the time range. Since the subjects' frequency varied depending on the way to set up the time range, the necessity was proposed that the time range for the analysis of observation characters should be set up more objectively. Third, in case of analyzing the observation characters by 10-second-unit time range, the concentration in the beginning and the middle was 25%, and that in the beginning and the final 41.7%, which showed that 75% of the subjects concentrated in the beginning of the observation time when the concentration in the beginning is added to it. Fourth, the type 3 categorized as "concentration in the beginning and the middle" is the group 47.1 percent of the subjects belong to, and each subject concentrated 1.1 times in the beginning and 2.1 times in the final, which showed that the concentration in the final was 1.75 times as high as that in the beginning.

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휠체어 장착형 지능형 재활 로봇을 위한 칼라 비전 시스템 (Color Vision System for Intelligent Rehabilitation Robot mounted on the Wheelchair)

  • 송원경;이희영;김종성;변증남
    • 전자공학회논문지S
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    • 제35S권11호
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    • pp.75-87
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    • 1998
  • KARES(KAIST Rehabilitation Engineering System)는 보조자 없이 팔과 다리가 불편한 장애인과 노약자가 쉽게 이동하며 일상 생활을 하는 것을 돕기 위하여, 6 자유도의 로봇 팔과 휠체어에 장착한 형태의 재활 로봇 시스템이다. 재활 로봇 시스템에서 로봇 팔을 프로그램하고 제어할 수 있는 인터페이스 장치는 매우 중요하다. 특히 사용자가 로봇 팔을 직접 제어하는 경우, 사용자의 인지력의 부담이 심하고 조작의 어려움을 느낀다. 이에 대한 해결책으로 로봇이 자율적으로 작업을 수행하기 위한 칼라 비전 시스템을 제안하고 기본적으로 필요한 네 가지 작업을 정하였다. 로봇 팔에 아이-인-핸드 형태로 카메라를 장착하여 칼라 비전 시스템을 구축하고, 탁자 위에 있는 칼라 표식이 부착된 컵을 잡는 작업과 작은 컵을 입 근처로 이동하는 작업을 구현하였다. 그 결과, 실내 환경에서 실시간에 성공적으로 수행되었다.

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미용 왁싱에 대한 동기요인과 정보탐색유형이 왁싱관리의도에 미치는 영향 (The Effect of Motivational Factors and Information Search Types on Waxing Care Intention)

  • 송선화;김상수
    • 한국융합학회논문지
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    • 제11권10호
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    • pp.329-335
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    • 2020
  • 본 연구는 개인이 어떤 동기를 가지고 왁싱관리를 받고자 하는지, 또 어떤 과정을 거쳐서 왁싱관리의도가 형성되는지 그 메커니즘을 살펴보고자 하였다. 이를 위하여 연구모형을 설정하고 서울 및 경기 지역의 성인 남녀를 대상으로 설문조사를 실시하여 얻은 160건의 응답데이터를 구조모형 분석에 활용하였다. 그 결과 미용 왁싱에 대한 동기요인(관심도, 중요성, 시선)은 정보탐색유형(탐색도, 관찰도)을 통해 왁싱관리의도에 영향을 미치는 것으로 나타났다. 본 연구는 왁싱관리의도의 선행요인과 과정에 대한 탐색을 통해 미용 학문의 영역 확장과 미용 왁싱의 잠재 수요자에 대한 이해 증진의 효과라는 실무적 시사점을 내포한다. 더불어 본 연구를 통하여 미용 왁싱 시장의 활성화에 일조할 것으로 사료된다.

대형 TFT-LCD용 SDI 신호 생성기의 개발 (Development of SDI Signal generator for Large size TFT-LCD)

  • 최대섭;신호철
    • 한국위성정보통신학회논문지
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    • 제9권1호
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    • pp.13-16
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    • 2014
  • 최근 TFT-LCD TV를 구동하는데 있어서 비발광소자인 LCD의 응답특성을 개선하기 위해서 많은 연구가 진행되고 있다. 특히 기존의 1 Frame 의 시간주기를 보다 작게 나누어 구동하는 방법에 대해서 많은 연구가 진행되고 있으며, 이 경우 화면을 구성하는 데이터의 양이 많이 소요됨과 동시에 드라이버 IC의 구동 속도가 문제가 되고 있다. 기존의 차동신호를 바탕으로 한 TFT-LCD 구동신호는 이러한 문제에 대응하는데 문제가 있으며, 본 연구에서는 Full HD를 Quad 쌍으로 구동하는 고속 구동을 위해서 기존의 신호전송방식이 가지고 있던 많은 입력선 수를 효과적으로 줄이기 위해서 직렬 데이터 전송방식의 Full HD Generator 를 제작하여 평가하는데 목적을 두었으며, 평가 결과 육안으로도 잔상이 없는 고속구동이 가능한 직렬 데이터 방식의 구동 설비를 제작할 수 있었다.

BIOLOGICAL ACTIVITES OF PLANT LEAF EXTRACTS; AVAILABILITY OF STAR FRUIT LEAF EXTRACT AGAINST SKIN AGING

  • Yoshihito Kawashima;Zhou, Yan-Yang;Naoko Kishida;Nobuaki Ohto;Daisuke Araho;Yoko Ito;Toshimitsu Kambara;Zhou, Wan-Hua
    • 대한화장품학회:학술대회논문집
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    • 대한화장품학회 2003년도 IFSCC Conference Proceeding Book I
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    • pp.645-658
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    • 2003
  • We evaluated activities of various plant leaf extracts and found the availability against skin aging in the leaf extract of star fruit (Averrhoa carambola L), and developed Star Fruit Leaf Extract BG30 as an ingredient of cosmetics. Star Fruit Leaf Extract BG30 was found to show scavenging activities of reactive oxygen species and an inhibitory effect on the activity of matrix metalloproteinase-1. It showed increasing activity of type I collagen and recovery effect from damage of UV-B irradiation in human fibroblast. We performed the separation of the active principal from Star Fruit Leaf Extract BG30 to give isofurcatin 2"-Ο-$\alpha$-L-rhamnopyranoside, which showed increasing activity of type I collagen. To examine the anti-wrinkle effect of Star Fruit Leaf Extract BG30, seven volunteers applied a Star Fruit Leaf Extract BG30 1 % cream in double blind manner to one-side of the corner of their eye and the placebo cream to the opposite side. Clinical evaluation of wrinkling was performed every week for 5 weeks using a silicone rubber replica. A statistically significant improvement of Star Fruit Leaf Extract BG30-treated site was seen in decreased wrinkles. Star Fruit Leaf Extract BG30 results in clinically visible improvement in wrinkling when used topically for 5 weeks.

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Comparison of brassiere sales patterns in Korea and China

  • Cha, Su-Joung;Sohn, Hee-Soon
    • 패션비즈니스
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    • 제12권6호
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    • pp.107-123
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    • 2008
  • The purpose of this research is to compare and analyze the brassiere patterns sold in Shanghai and Korea and to present basic materials needed in developing the brassiere patterns in Chinese adult women market. The study subject which is to find the difference in brassiere patterns of Korea and China has been selected of 3 Korean brands and 4 Chinese brands. 1. For the brassiere patterns sold in Korea, it were using the same size for the width of Hook&Eye, space between the shoulder lace on the back, slope of wing and the location of the Keeper was similar. 2. For the cup supporting base, Chinese brassiere covers the lower part of the breast and as it is not comfortable and has a phenomenon of loosening up, there were severe puckering. For issues in the wearing experiment, amendments in patterns with the cup part was required. 3. Chinese brassieres were big differences in wing angles and for Aimer, it had the steepest trend in wings and thus the wings headed down and for Gujin, as the angle of the wing was smaller than $90^{\circ}$, it was heading upward. 4. Upon comparing the patterns of the Korean and Chinese brassiere, although most of the sizes excluding the wing angle had similar sizes, there was big differences in the wing angle. The reason why the brassiere patterns sold in China had bigger wing angle was due to the fact that more Chinese women had sway back body type than the Korean women and should reflect such difference in body size into making the brassiere patterns for each women.

Prevalence of Diplopia and Extraocular Movement Limitation according to the Location of Isolated Pure Blowout Fractures

  • Park, Min-Seok;Kim, Young-Joon;Kim, Hoon;Nam, Sang-Hyun;Choi, Young-Woong
    • Archives of Plastic Surgery
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    • 제39권3호
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    • pp.204-208
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    • 2012
  • Background : Isolated pure blowout fractures are clinically important because they are the main cause of serious complications such as diplopia and limitation of extraocular movement. Many reports have described the incidence of blowout fractures associated with diplopia and limitation of extraocular movement; however, no studies have statistically analyzed this relationship. The purpose of this study was to demonstrate the correlation between the location of isolated pure blowout fractures and orbital symptoms such as diplopia and limitation of extraocular movement. Methods : We enrolled a total of 354 patients who had been diagnosed with isolated pure blowout fractures, based on computed tomography, from June 2008 to November 2011. Medical records were reviewed, and the prevalence of extraocular movement limitations and diplopia were determined. Results : There were 14 patients with extraocular movement limitation and 58 patients complained of diplopia. Extraocular movement limitation was associated with the following findings, in decreasing order of frequency: floor fracture (7.1%), extended fracture (3.6%), and medial wall (1.7%). However, there was no significant difference among the types of fractures (P=0.60). Diplopia was more commonly associated with floor fractures (21.4%) and extended type fractures (23.6%) than medial wall fractures (10.4%). The difference was statistically significant (Bonferroni-corrected chi-squared test P<0.016). Conclusions : Data indicate that extended type fractures and orbital floor fractures tend to cause diplopia more commonly than medial wall fractures. However, extraocular movement limitation was not found to be dependent on the location of the orbital wall fracture.

A Study on the Transference of Headlines and Types of Preferred Headlines in Offline and Online Newspapers

  • Kim, Man-Ki;Kang, Hyun-Jig
    • 디지털융복합연구
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    • 제9권1호
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    • pp.89-106
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    • 2011
  • With the development of the Internet, the media market is experiencing rapid change. The traditional form of offline newspaper markets, which has created the mainstream news delivery market, have been losing large amounts of power due to the emergence of online media. On the other hand, online media armed with its ability to post breaking news almost as it occurs has increased its influence and popularity at a rapid speed. However, since the exposure time and readership of online newspapers are less than their offline counterparts online media has a high dependence on sensational titles and somewhat exaggerating headlines rather than the objective and recapitulative headlines which are preferred. This paper will examine the function and significance of headlines, and conduct a comparative analysis on contents and forms of the headlines in offline newspaper and online newspaper in order to identify the characteristics of each newspaper. Through comparisons, it examines the types of headlines and the transference of headlines. In addition, it examines the differences in recognition of copy editors according to media in determining the headline, and it illuminates which type of headlines is preferred in order to instigate readers to read online newspapers. The analysis results of title-transferring cases in offline newspaper and online newspapers are that offline newspapers try to convey the contents accurately by making use of an information-transferring headline, while attention-attracting headline or subject-hiding headlines tend to be used for attracting the eye of readers. In addition, analysis results of headlines that are put on the top with a click counts in online newspapers are that attention-attracting headlines are the majority, while subject-hiding headlines that are hardly used in offline newspapers, are well-used in online newspapers. In an interview with copy editors, they responded that offline editors focus on the fact-transference in determining the title, while online editors put the weight on immediacy in the delivery of news and the function of guiding readers.