• 제목/요약/키워드: Youngsun

검색결과 214건 처리시간 0.032초

기준국 배치에 따른 한국 위성기반 보강 시스템 UDRE 성능 영향 분석 (An Analysis of Reference Station Distribution Impact on KASS UDRE Performance)

  • 윤영선
    • 한국항행학회논문지
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    • 제19권3호
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    • pp.207-216
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    • 2015
  • SBAS 기준국의 배치는 시스템 성능에 영향을 미치는 가장 중요한 요소 중 하나이므로 기준국 배치가 주어진 성능 요구사항을 만족시킬 수 있는지 시스템 개발 초기에 신중하게 분석하여야 한다. 특히 한국형 SBAS로 개발이 진행 중인 KASS의 기준국은 대한민국 내에 설치될 예정이므로 기준국의 개수와 영역이 제한될 수밖에 없으며 이는 넓게 기준국을 배치할 수 있는 타 SBAS 시스템과 구별이 되는 부분이다. 본 논문에서는 이러한 한계로 인한 GPS 및 GEO에 대한 UDRE와 ${\delta}UDRE$ 성능 영향을 시뮬레이션을 통하여 분석하였으며 그 결과 UDRE 성능은 기준국이 얼마나 넓게 분포하는지에 크게 영향을 받으며 특히 GEO UDRE에 미치는 영향이 매우 심각한 것을 확인하였다. 이 결과를 바탕으로 기준국 배치 영향으로 인한 시스템 성능 위험을 최소화하기 위한 KASS설계 및 개발 고려 사항을 제시한다.

국내 시추조사 자료 정밀도 시계열 분석 (Time-series Analysis of Precision the Domestic Boring Investigation Data)

  • 장용구;김영선;채덕호;조완제
    • 한국지반환경공학회 논문집
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    • 제16권3호
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    • pp.15-21
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    • 2015
  • 2007년 <지반조사 성과 전산화 및 활용에 관한 지침>에 따라 국토지반정보 통합DB센터화 사업이 추진되어 건설현장에 생성되는 지반정보와 관련된 각종 조사, 정보의 효율적인 수집 및 활용을 위하여 시추정보 유통프로세스 사업이 진행되고 있다. 국토지반정보 통합DB센터에 따르면 2014년 6월을 기준으로 약 18만공의 지반정보가 정리되어 있으며 현재에도 지반정보에 대한 데이터베이스 구축이 활발하게 진행되고 있다. 본 연구는 이러한 지반정보 유통프로세스 사업이 시추정보 정밀도에 미치는 영향을 살펴보기 위하여 현장에서 가장 많이 활용되고 있는 지하수위와 지층심도에 관한 시추정보를 이용하여 정밀도 시계열 분석을 실시하였다. 정밀도 분석은 정규분포와 첨도를 통한 통계학적 방법을 이용하였다. 결과적으로 유통프로세스 사업이 시추정보 정밀도 향상에 긍정적인 영향을 미치는 것을 확인할 수 있었으며 보다 많은 정보를 바탕으로 다양한 시추정보의 정밀도 검증을 수행할 경우 각 지역에 따른 시추정보 정밀도 평가도 수행할 수 있을 것으로 기대된다.

초등학생과 중학생의 과학긍정경험 향상 요인에 대한 질적 탐구 (Qualitative Inquiry on Factor for Improving Elementary and Secondary Students' Positive Experiences about Science)

  • 강훈식;이성희;이일;곽영순;신영준;이수영;하지훈
    • 한국초등과학교육학회지:초등과학교육
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    • 제39권2호
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    • pp.183-203
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    • 2020
  • The purpose of this study is to investigate the factor for improving elementary and secondary students' positive experiences about science (PES). In-depth interviews with 32 students and 8 teachers from 8 elementary and secondary Science Core schools were conducted to explore the factors for improving the student's PES. The analysis of the results reveal that the eight key factors which had a decisive impact on a student's PES were 'practice-centered exploratory activities', 'student-led class', 'positive and professional feedback', 'construction of knowledge through exploration', 'class considering student's interest and aptitude', 'use of materials related to real life', 'smooth communication and collaboration in group activities', and 'appropriate difficulty in learning content'. There were also five environmental factors that affected these key factors: 'teacher's professionalism for science classes', 'science class environment', 'teacher community in unit schools', 'change in curriculum', and 'scientific activities other than regular classes'. Based on these results, the practical implications for improving the student's PES are suggested.

패션에 활용된 디지털 그라피티의 특성과 표현방법 (A Study on the Characteristics of Digital Graffiti and Expression in Fashion)

  • 김태희;유영선
    • 복식
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    • 제65권8호
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    • pp.50-63
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    • 2015
  • The purpose of this study is to explore the potential of digital graffiti as a new creative tool in fashion through analysis of its expressive features and methods merged in fashion. The results from the analysis of fashion cases using digital graffiti may be summarized as follows. First, 'Mixing of Materials and Non-materials' matched immaterial lights and images with physical clothing materials and space, effectively expressing imaginary spheres that were not expressible with the existing materials. Second, 'Fantastic Storytelling' expressed theme such as 'Sun', 'UFO', 'Science Fiction Film', 'Fantasy Fairy Tale', and 'Universe' through lasers, lights, augmented reality and LED graffiti. Third, 'Convergence with Human and Digital Media' accentuated the active participation of spectators thereby causing human and digital media to interact with each other. Designer's ideas and unexpected responses of spectators realized various digital graffiti effects, which came across by sheer chance. Fourth, 'Utilizing of Site-Specificity' met with the best results when the digital graffiti was expressed in context of a place or location where fashion performance is taking place. Fifth, ' Playfulness by Consumer Participation' intended to induce voluntary participation from consumers by providing the fashion digital graffiti as play tools, and created new fashion digital graffiti or altered existing stereotypes, thereby invoking new visual and tactile experiences. Likewise, today's digital graffiti are emerging in various fields, and the trend of fashion-digital graffiti integration has already created interesting works.

K-pop 걸 그룹의 패션에 나타난 이미지 연출 특성에 관한 분석 (A Study of Image Making Features on Fashion Styles of K-pop Girl Groups)

  • 정소하;유영선
    • 복식
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    • 제63권2호
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    • pp.98-109
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    • 2013
  • This study aims to discuss the image making of K-pop girl groups to provide an outlook on the necessary fashion components in order to express certain concepts by analyzing the fashion styles. The fashion styles of the representative girl groups from 2007 to 2011 were classified into five types: retro style, schoolgirl style, chic style, sporty style and marine style. The following are the features and elements of image making by style. The retro style pursued going back to the past. It used stripes, dots, leopard patterns, spangles and denim. It reproduced the style of the past to the trendy style using big sunglasses, retro makeup, girlish hair and gold wigs. The schoolgirl style created the sexy or cute image by using school uniforms as the motif including shirts, short pants and knee socks. It included having natural makeup and straight hair and differentiated colors, patterns and designs. The chic style was classified into rock chic look and sexy look. Both looks had common elements including smoky pop active makeup while the fashion concepts and hair styles were different. The sporty style took the concept of cheer girls. It used plaid shirts, baseball jackets, short pants, thigh high boots, vivid hair accessories, romantic makeup and straight, wave hair. The marine style took the naval uniform as the motif. It expressed the image using short pants, stripe patterns, wappens, naval caps and smoky sexy makeup, straight hair. K-pop girl group fashion is the driving force for the growth of Korean fashion industry as well as its cultural trends and hope that it have a growing influence on the global market and trend through continuing research and support.

Two Echinostome Species, Pegosomum bubulcum and Nephrostomum ramosum (Digenea: Echinostomatidae), from an Eastern Cattle Egret, Bubulcus ibis coromandus, in Republic of Korea

  • Choe, Seongjun;Lee, Dongmin;Park, Hansol;Jeon, Hyeong-Kyu;Lee, Youngsun;Kim, Eunju;Na, Ki-Jeong;Eom, Keeseon S.
    • Parasites, Hosts and Diseases
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    • 제54권4호
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    • pp.485-496
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    • 2016
  • We describe 2 echinostome species recovered from an Eastern cattle egret, Bubulcus ibis coromandus, from Cheongju-si (city), Chungcheongbuk-do (province), Korea. Total 72 Pegosomum bubulcum specimens were recovered from the bile duct. They were $7,566{\times}2,938{\mu}m$ in average size and had 27 collar spines with vitelline extension from anterior 1/3 level of the esophagus to mid-level of the posterior testis as characteristic features. Total 9 specimens of Nephrostomum ramosum were recovered in the small intestines of the bird. They were ribbon-shaped, $11,378{\times}2,124{\mu}m$ in average size, and morphologically variable in some organs, i.e., the number of collar spines (47-50), the shape of ovary and testes, and the extension of vitelline follicles. These morphological variations observed in a single host indicated that these features are not critical for the classification of Nephrostomum species and thus were reconsidered taxonomically as synonym of N. ramosum. This study is the first report documenting and describing both flukes and their associated genera in Korea.

Catenotaenia dendritica (Cestoda: Catenotaeniidae) and Three Ectoparasite Species in the Red Squirrel, Sciurus vulgaris, from Cheongju, Korea

  • Choe, Seongjun;Lee, Dongmin;Park, Hansol;Jeon, Hyeong-Kyu;Lee, Youngsun;Na, Ki-Jeong;Lee, In-Yong;Eom, Keeseon S.
    • Parasites, Hosts and Diseases
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    • 제54권4호
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    • pp.509-518
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    • 2016
  • Parasites are recorded from the red squirrel, Sciurus vulgaris, from Cheongju, the Republic of Korea. A total of 5 road-killed squirrels were thoroughly examined for internal and external parasites from November 2011 to May 2014. Total 4 parasite species, including 1 tapeworm and 3 ectoparasite species were recovered. They were morphologically identified as Catenotaenia dendritica (Cestoda: Catenotaeniidae), Hirstionyssus sciurinus, Leptotrombidium pallidum, and Ceratophyllus (Monopsyllus) indages. Among them, C. dendritica and H. sciurinus are recorded for the first time in the Korean parasite fauna. In addition, the possibility that the red squirrel could act as a reservoir host for a zoonotic disease like tsutsugamushi disease with L. pallidum as its vector has been raised.

과학과 수업평가 기준의 역할 및 개발 방안 연구 (Research on the Role of Science Teaching Evaluation Standards and How to Develop the Standards)

  • 곽영순;최승언
    • 한국지구과학회지
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    • 제26권5호
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    • pp.367-375
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    • 2005
  • 본 연구에서는 문헌 연구, 설문 조사, 수업관찰 및 교사 면담 등을 통하여 수업평가 기준의 목적, 개발이 필요한 이유, 수업평가 기준의 역할 등을 살펴보았다. 이어서 현장 교사들이 생각하는 수업평가 기준 개발의 바람직한 주체가 누구이며, 수업평가 기준이 개발될 경우 누가 가장 많은 혜택을 받을 것으로 기대하는지를 살펴보고, 나아가 수업평가(기준) 정착을 위한 선결 요건을 고찰하였다. 요약하면, 수업 평가기준은 (1) 초보자를 위한 지침, (2) 숙련된 전문가를 위한 지침서 (3) 개선 노력을 집중할 부분을 파악하는 구조, (4) 교직이외의 다른 공동체들과의 의사소통의 수단이 될 수 있다. 또한, 수업평가는 물론 수업평가 기준 개발의 주체는 교사들이어야 하며, 일반 기준과 차별화 되는 교과별 기준, 즉 과학과 수업평가 기준 개발의 필요성을 논의하였다. 즉, 교과별 수업평가 기준 개발은 교사들의 적극적인 참여와 교육과 관련된 주요 이해당사자들이 폭넓게 참가하지 않고서는 성공하기 어렵다. 이러한 수업 평가기준 개발의 성공 여부는 이러한 평가기준이 일반 공동체, 특히 교육 공동체에 의해 수용되는 수준에 따라 결정될 것이다.

부부의 음주와 부부관계 만족도의 관계에서 부부 폭력의 매개 효과: 자기-상대방 상호의존 모형(APIM) 분석 (Mediating Effect of Intimate Partner Violence on the Relationship between Alcohol Use and Relational Satisfaction: Actor-Partner Interdependence Model Analysis)

  • 우성범;이영선
    • Human Ecology Research
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    • 제58권1호
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    • pp.75-86
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    • 2020
  • This study examined the mediating effect of intimate partner violence (IPV) between alcohol use and relational satisfaction by the Actor Partner Interdependence Model (APIM). For this study, data were drawn from the 13th-wave Korea Welfare Panel data and a total of 2,263 married couples were included in the analysis. SPSS 25.0 and AMOS 24 were used to analyze data and the Actor Partner Interdependence Mediation Model (APIMeM) examined the mediating effect. The results of this study are summarized as follows. First, the actor effect and the partner effect on the relationship of alcohol use and partner violence were all verified to be positive effects. Second, the actor effect and the partner effect on the relationship of partner violence and relational satisfaction were all verified to be negative effects. Third, comparison of the actor effect and partner effect between the husband and wife showed that the partner effect in which alcohol use to partner violence was greater in the husband than in the wife. In addition, both the actor and partner effect of violent reducing their relational satisfaction were greater in wives than in husbands. The findings of this study suggest that IPV has a mediating role between couples' alcohol use and the relational satisfaction and husband's violent behavior has more negative effect on the quality of the relationship than the wife's violent behavior.

3D 프린팅 패션에 나타난 콜라보레이션(Collaboration) 사례연구 (A Case Study on Collaborations in 3D Printing Fashion)

  • 박수연;유영선
    • 복식
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    • 제66권7호
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    • pp.124-138
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    • 2016
  • The present study observes collaboration methods in which 3D printing was a part of the fashion manufacturing process, expression methods of such cases, and their ripple effects. As a result, the three types of collaborations between fashion designers and other industry fields, fashion brands and 3D printing companies, and fashion designers and artists. Case analysis results and ripple effects found according to each collaboration method were as follows. First, in collaborations found were between fashion designers and other industry fields, 3D printed fashion works with futuristic images were seen through the fusion of future industries, which claim to support cutting edge digital technology, and creative fashion design. As they were mainly collaborations between automobile industries with cutting edge images or digital related industries and fashion designers, they were expressed as a new form of experimental clothing, and were used as strategies to improve future corporate images of the high tech industry. Second, in collaborations between fashion brands and 3D printing technology businesses, the sporting good brands and the shoe industry attempted to let their products be known through the promotion of functional material or ergonomic technology. While they emphasize practicality by mainly using flexible material, they were mainly proposed as functional sporting goods for famous players or as shoe accessories, so methods are still used for public distribution as brand promoting marketing strategies. Third, with collaborations between fashion designers and artists, creative pieces were shown through the grafting of 3D printing technology, the artistry of artists, and the experimentation of fashion designers. In particular, the innovative value of fashion as art was created through the union of the artistic 3D modeling technology support of artists and the creativity of designers. Like this, 3D printing fashion can graft the cutting edge nature of fashion to other industry fields through collaborations, enhancing pacesetting images, and in the fashion field, it can improve possibilities for innovations in the fashion industry through the support of 3D printing technology businesses and artists, raising expectations towards future human living.