• Title/Summary/Keyword: 형 전이

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스마트 센서와 지능형 자동차

  • Gang, Gyeong-Tae
    • Journal of the KSME
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    • v.54 no.10
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    • pp.32-34
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    • 2014
  • 이 글에서는 최근에 전 세계적으로 활발하게 연구가 진행되고 있는 스마트 센서와 센서 기술들을 이용한 지능형 자동차 연구의 최신 연구 동향들을 소개하고자 한다.

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Locational Characteristic of Byeolseo in Gyeongsangnamdo.Jeollado by Cluster Analysis (군집분석을 통한 경상남도.전라도 별서의 입지적 특성)

  • Lee, Kyoung-Eun;Ahn, Gye-Bog
    • Journal of the Korean Institute of Traditional Landscape Architecture
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    • v.30 no.2
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    • pp.37-45
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    • 2012
  • Byeolseo was located in various places with beautiful natural scenery to avoid the mundane world and for country life in seclusion. In this study, to classify locational type and characteristics of Byeolseo in Gyeongsangnamdo and Jeollado areas, complex locational types and characteristics of total 96 Byeolseo (52 in Gyeongsangnamdo and 44 in Jeollado) were researched and cluster analysis was executed to group locational characteristics to several clusters with similar characteristics in order to classify locational types of Byeolseo. As the result, locational type for Gyeongangnam-do and Jeolla-do were classified to 5 types each. Unique locational types Gyeongsangnamdo were 'valley type' and 'cliff type' and unique ones for Jeollado were 'flatland type' and 'riverside.hill type'. 'Hill type', 'curvy river type' and 'riverside other type' were shown in both areas. In Gyeongangnamdo, 30.8% was cliff type and 15.4% was valley type 46.2% of the total was locatedon 'cliff near river' or 'valley'. These were the most popular locational characteristics of Gyeongangnamdo. Unlike Gyeongangnamdo, 18.2% was flatland type, 18.2% is riverside.hill type, and 39.6% was hill type in Jeollado 75.0% of the total was locatedon 'flatland', 'on hill near river' or 'on hils'. These were the most popular locational characteristics of Jeollado. Such locational characteristics showed that Byeolseo was located using nearby scenery considering topographic characteristics of the located area.

몰입형 미디어 포맷 표준화 동향

  • Lee, Jang-Won
    • Broadcasting and Media Magazine
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    • v.23 no.4
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    • pp.31-40
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    • 2018
  • VR(Virtual Reality), AR(Augmented Reality) 컨텐츠의 획득과 소비가 가능한 사용자 디바이스들이 널리 보급되고 있는 가운데, MPEG(Moving Picture Experts Group)에서는 몰입형(immersive) 미디어의 압축과 포맷, 전송에 대한 표준 제정 작업이 활발히 진행 중이다. 본 논문에서는 몰입형 미디어 표준 프로젝트인 MPEG-I와 그 부속 표준의 하나이며 전 방향 미디어 포맷에 대한 표준인 OMAF 표준의 기술 전반과 표준 동향에 대해 소개하고자 한다.

Synthesis and Characterization of Transition Metal(Ⅱ) Complexes with Tridentate Schiff Base in DMF Solution (DMF용액에서 세자리 Schiff Base를 가진 전이금속(II) 착물들의 합성과 구조결정)

  • Oh, Jeong Geun;Choi, Yong Kook
    • Journal of the Korean Chemical Society
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    • v.43 no.5
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    • pp.511-516
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    • 1999
  • Shiff Base ligand such as [NOIPH] have been synthesized from 2-hydroxy-1-naphthaldehyde and arometic amine. Co(II), Ni(II), and Cu(II) complexes from the reaction metal salts with Tridentate Schiff Base [NOIPH] were sythesized. The ligand and metal(II) complexes were characterized by the elementary analysis, IR, UV-Vis, NMR spectra, and thermogravimetric analysis. Metal(II) complexes in solid state have been shown that the mole raio of Schiff base [NOIPH] as $N_2O$ type to Metal(II) is 2:1 and the metal(II) complexes of $N_2O$ ligand type were four-coordinated configuration.

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Evaluation of Overturning Stability for Preventing Safety Accidents Caused by Ladder Work in Landscape Construction and Management - For the Tripod Support Portable Ladders Used in Korea - (조경시공·관리에서 사다리 안전사고 예방을 위한 전도 안정성 평가 - 국내에서 사용되고 있는 삼각지지형 이동식 사다리를 대상으로 -)

  • Kim, Eun-Il;Kwon, Yoon-Ku;Lee, Gi-Yeol
    • Journal of the Korean Institute of Landscape Architecture
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    • v.51 no.5
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    • pp.1-12
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    • 2023
  • This study evaluated the overturning stability of portable tripod ladders used for high-altitude work such as tree management and pruning work in landscaping construction and management. Portable tripod ladders, which are included in general mobile or portable ladders frequently used in industrial sites, are supported in a triangular support structure, not a 4-point support like common A-type Ladders. In addition, since the working height is more than twice that of a mobile or portable ladder, the possibility of an overturning accident that threatens the safety of workers with a fall accident is high. Therefore, based on the overturning stability test specified in ANSI-ASC A14.7 and EN 131-Part 7, which are related standards for about 130 types of portable tripod ladders sold and used in Korea. An equation to calculate each moment according to working height was derived. Then, each calculated moment was compared to evaluate the safety factor for overturning and stability. As a result of the overturning stability evaluation according to each standard, when the provisions of EN 131-Part 7 were applied, portable tripod ladders with 8 steps in the rear direction and 6 steps or more in the side direction were evaluated as unstable against overturning, but according to ANSI-ASC A14.7 regulations. It was evaluated that the stability against overturning was secured in all directions and number of steps.

Decorative Bricks and Roof Tiles used in Walls and Chimneys in the Chosun Dynasty -focusing on the Design Characteristics (조선조 담${\cdor}$굴뚝에 나타나는 전${\cdor}$와편 장식문양의 유형 -조형 특성을 중심으로)

  • ;Kudo Takashi
    • Archives of design research
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    • v.14 no.4
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    • pp.87-98
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    • 2001
  • In the Chosun Dynasty (1392-1910), the walls and chimneys of palaces, temples, and the houses of the upper-class show various characteristics of decorative design patterns. This study investigated ceramic bricks and roof tiles, which is one aspect of environmental design studies. This study aimed to provide a typology ot traditional Korean design of bricks and roof tiles used in walls and chimneys, and to show the design characteristics. This study collected 685 designs of bricks and roof tiles, and divided them into 18 categories and 5 types of design patterns based on object figures, architectural styles, materials, and decorative methods. In conclusion, there were differences and similarities among the design patterns. In general, the palaces mostly used red, gray, and black bricks that had more detailed designs presenting auspicious signs or exorcism. But, temples and the houses usually used (black) roof tiles horizontally configured with the edges overlapping to decorate as wall as to strengthen their structure.

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Pullout Characteristics of End Fixed Nails (양단정착형 쏘일네일링의 인발특성)

  • Lee, Bongjik;Kim, Josoon;Lee, Jongkyu
    • Journal of the Korean GEO-environmental Society
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    • v.8 no.4
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    • pp.5-11
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    • 2007
  • In this study, several pullout tests were carried out under various field conditions to evaluate the pullout force of the end fixed nails. Pullout resistance force, displacement and friction force between the grouting and nail were measured in end fixed nails installed in soft rock, weathered rock and weathered soil. Furthermore, the field test were also carried out under the same condition using the conventional type nails. Based on the test results, it is concluded that the end fixed nails showed larger ultimate resistance force compared with conventional types nails, approximately two times in weathered soil and 1.6 times of weathered rock, respectively. The skin friction is also increased in end fixed type about 1.8~3.0 times. Finally, it is concluded in the base of the force transfer properties that using the end fixed nails could decrease the displacement and show a uniform resistance in entire length of nails.

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