• 제목/요약/키워드: Overturn

검색결과 90건 처리시간 0.026초

경사지 트랙터의 자동 수평기구부 개발 및 응답 특성에 관한 연구 (Development of an Automatic Leveling Mechanism and Response Properties for the Slope Tractor)

  • 이상식;문정환;이규승;박원엽;이충호;황헌
    • Journal of Biosystems Engineering
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    • 제30권1호
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    • pp.1-7
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    • 2005
  • When a slope tractor works on the slope land, it travels usually along the contour and slope line. In that case, the efficiency of work generally decreases and the safety of the operator caused by the overturn of the tractor should be considered. Maintaining the tractor body being horizontal during the travel is crucial to solve problems. To overcome such a problem, an automatic leveling control system for slope tractor has been developed. The system composed of sensor for measuring rolling and pitching inclination of the slope tractor chassis, controller, hydraulic control system and mechanism. The limit angle of the leveling control was set up to be ${\pm}15^{\circ}C$ for rolling, ${\pm}7^{\circ}C$ for pitching. The proposed control and hydraulic power system was implemented to the prototype slope tractor. This paper shows results about development of the automatic leveling mechanism and response properties for slope tractor.

방호울타리 안전성능에 관한 충돌해석 연구 (A Study on the Safety Performance of Roadside Barriers by Collision Analysis)

  • 이영호;송재준;이상윤
    • 한국산학기술학회논문지
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    • 제13권11호
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    • pp.5558-5565
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    • 2012
  • 도로 방호울타리는 차량의 이탈을 방지하는 시설로, 도로의 형태나 제한속도 등을 기준으로 하여 7 종류의 방호울타리를 규정하고 있다. 하지만, 최근 차량의 성능이 향상되면서 과적, 과속의 위험이 있고, 국내외 방호울타리 관련 차량사고를 보면 추락사고가 빈번하게 발생하고 있어, 현재의 방호울타리 설계충격도가 다소 부족한 것으로 나타나고 있다. 본 연구에서는 고속도로에 주로 적용하는 SB5 강재 방호울타리와 SB6 콘크리트 방호울타리의 차량방호 성능을 검증하기 위하여 차량충돌해석을 수행하여, 방호울타리의 파괴 및 차량전도 조건을 산출하였다.

삼음교(SP6) 혈위에 관한 연구 - 족내과상 8촌설에 대하여 - (Study on the Acupoint Location of Sameumgyo (SP6) - Regarding the Theory of 8 Cun above the Tip of the Medial Malleoulus -)

  • 박상균
    • Korean Journal of Acupuncture
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    • 제37권2호
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    • pp.122-129
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    • 2020
  • Objectives : The objective of this study was to examine the acupoint location of Sameumgyo (SP6) from classic literatures. Methods : A review of SP6 acupoint location on 13 classics of acupuncture and moxibustion was performed. Results : Differences of SP6 acupoint location were found by classics of acupuncture and moxibustion. 9 classics of acupuncture and moxibustion said the acupoint of SP6 was located on 3 cun above the tip of the medial malleoulus, however acupoint location of SP6 was described on 8 cun above the tip of the medial malleoulus by 4 classics of acupuncture and moxibustion. Conclusions : Through a classic literature review, it was possible for the explanation that the location of SP6 was 8 cun above the tip of the medial malleoulus, but it was not intended to overturn the theory of 3 cun above the tip of the medial malleoulus regarding location of SP6. This study may be the starting point for future experimental or clinical studies for exploring new acupoint, and is expected to follow up.

글램과 펑크의 헤어스타일에 관한 연구 - 1970년대를 중심으로 - (A Study on the Glam and Punk Hairstyle - Focused on The 1970s -)

  • 정희영;정현숙
    • 복식문화연구
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    • 제15권5호
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    • pp.781-795
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    • 2007
  • The purpose of this study is not only to widen and deepen the understanding of external environments of hairstyle but also to provide the basis of understanding and perspicacity as to the hairstyle which will be created under the influence of new music by contemplating distinctions between Glam Fashion and Punk Fashion of 1970s and by comparing and analyzing distinctions between Glam Hairstyle and Punk Hair Style of 1970s. As the method of this study, first of all four common factors, which are resistance, androgynous, beauty of ugliness and pursuit of pleasure through persona, were able to be ed from both Glam Fashion and Punk Fashion of 1970s, and then by using that factors as analyzing instrumental frame, the above two hairstyles were compared and analyzed through photographic materials in this study. According to the results of comparing and analyzing two hairstyles above, in Glam Hairstyle, the androgynous character is the most remarkable distinction. They tried to overturn the gender role by challenging the traditional color and form of hairstyle. In funk Hairstyle, the resistance is the most prominent distinction. They expressed their group identity resisting a pre-existing generation by putting on threatened and aggressive hairstyle.

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초기 디즈니 애니메이션의 유토피아적 가능성 : 미키 마우스에 관한 벤야민의 사유를 중심으로 (Utopianess in the Early Disney Animation: Focusing on Benjamin's thought on Mickey Mouse)

  • 최정윤
    • 한국콘텐츠학회논문지
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    • 제10권7호
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    • pp.142-148
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    • 2010
  • 20세기 초 근대성의 모순이 첨예하게 드러나고 테크놀로지의 발달에 따라 문자문화에서 시각문화로의 패러다임이 전환하는 사회 속에서 벤야민은 당대가 직면한 사회 역사적인 문제들의 해결책을 실천적으로 제시하고자 했다. 문화산업을 비판한 아도르노와는 대조적으로 그는 새로운 테크놀로지의 발달에 의해 등장한 대중예술매체에서 기존의 고정된 가치질서들을 전복시키고 현실을 변혁하는 가능성을 발견한다. 그리고 이러한 유토피아적 가능성은 비록 파편적이기는 하나 디즈니 초기 애니메이션에 대한 그의 사유에서 나타난다. 본 논문은 벤야민이 사유했던 유토피아적 가능성이 초기 디즈니 애니메이션에서 어떻게 구현되고 있는지를 고찰한다.

Analytical solution of seismic stability against overturning for a rock slope with water-filled tension crack

  • Zhang, Yanjun;Nian, Tingkai;Zheng, Defeng;Zheng, Lu
    • Geomechanics and Engineering
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    • 제11권4호
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    • pp.457-469
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    • 2016
  • Steep rock slope with water-filled tension crack will happen to overturn around the toe of the slope under seismic loading. This failure type is completely different from the common toppling failure occurring in anti-dipping layered rock mass slopes with steeply dipping discontinuities. This paper presents an analytical approach to determine the seismic factor of safety against overturning for an intact rock mass slope with water-filled tension crack considering horizontal and vertical seismic coefficients. This solution is a generalized explicit expression and is derived using the moment equilibrium approach. A numerical program based on discontinuous deformation analysis (DDA) is adopted to validate the analytical results. The parametric study is carried out to adequately investigate the effect of horizontal and vertical seismic coefficients on the overall stability against overturning for a saturated rock slope under two water pressure modes. The analytical results show that vertically upward seismic inertia force or/and second water pressure distribution mode will remarkably decrease the slope stability against overturning. Finally, several representative design charts of slopes also are presented for the practical application.

'실패한' 근대 집합주거의 실패요인에 관한 연구 (A Study on the Causes of Failure of the 'Failed' Modern Housing Projects)

  • 손세관
    • 한국주거학회논문집
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    • 제24권6호
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    • pp.151-161
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    • 2013
  • This research is an effort to clarify the causes associated with the 'failure' of public housing projects built in the 20th century. Two of the most brutal symbol of failure were selected: the Pruitt-Igoe built in St. Louis, U.S.A. and the Bijlmermeer in the south of Amsterdam, Netherlands. Many critics have attributed the problems of the selected housing projects to architectural failure, and proposed a series of new approaches to architectural design. The claim that many housing projects 'failed' because they were based on an agenda for social reform, derived from the ideas of the CIAM, presupposes that architects were in the position of authority over providing housing for the poor. This research tries to overturn the belief of architectural community which has placed the responsibility for the failure of public housing on designers. The sense of isolation and powerlessness felt by the residents, and the social problems attendant on those feelings, may be reinforced by design but is not caused by Modern Architecture. It should be stressed that the political-economic and social context is more significant than the architectural design for the failure of public housing projects such as the Pruitt-Igoe and the Bijlmermeer.

노스탤지어 감성이 복고패션 제품의 구매의도에 미치는 영향 (The Effect of Nostalgia on Purchase Intention of Retro Fashion Products)

  • 김하연;최윤정
    • 복식
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    • 제66권7호
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    • pp.139-153
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    • 2016
  • Retro fashion can be defined as re-applied and re-created fashion style where a certain period or a specific style in the past would be recalled. As a unique cultural phenomenon, the 'retro' style has affected not only our daily lives, but also the fashion industry. The purpose of this study is to explore the relationship between the nostalgia and consumer purchase behaviors of retro fashion products in Korea. The data was collected using a self-administered online survey of 224 respondents. The results show that the sub-elements of nostalgia include personal and historical nostalgia. The personal nostalgia positively influences consumers' purchase intention of retro fashion products, whereas historical nostalgia negatively affects retro purchase intention. Interestingly, the moderating effects of self-connection and age of respondents on the relationship between nostalgia and retro purchase intention was identified. The findings highlight the potential role of retro fashion on modern society, as it can overturn any concerns people may have about the gloomy future and the harsh reality.

동해 남서부 해역의 대륙사면에서 Thorpe 규모(scale)를 이용한 연직 난류 확산계수 추정 (Thorpe Scale Analysis using CTD Observations on the Continental Slope of the Southwestern East Sea)

  • 서성봉;박영규;박재훈;정희동
    • Ocean and Polar Research
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    • 제37권2호
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    • pp.107-117
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    • 2015
  • Thorpe scale analysis was performed using two sets of 25-hour-long hourly CTD data. Raw density profiles collected on the continental slope of the southwestern East Sea were post-processed to reduce instrument noises and measurement errors. Density inversions were detected by applying the overturn ratio test proposed by Gargett and Garner (2008). The value of $K_z$ below the main thermocline estimated with the Osborn parameterization was $5.3{\times}10^{-4}(1.1{\times}10^{-4})m^2s^{-1}$ and that with the Shih parameterization was $5.9{\times}10^{-5}(2.4{\times}10^{-5})m^2s^{-1}$during the spring (neap) tidal period. This result suggests that internal tides can enhance vertical mixing in the observation region.

아메리칸 뉴 시네마에 나타난 의상에 관한 연구 - <이지라이더(1969)>를 중심으로 - (A Study on the Costume expressed in the American New Cinema - focused on -)

  • 김혜정;박지훈
    • 패션비즈니스
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    • 제12권2호
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    • pp.28-41
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    • 2008
  • Fashion style in movies delivers their image the atmosphere and becomes the means for containing the personality, spiritual world and inner thinking the characters in the movies and including its plot. When the American new cinema emerged in late 1960's and early 1970's in the American movie history, the new left wing which wants to overturn adult generation and the hippie culture which wants to escape from an existing system also emerged. Therefore, this study analyzed the fashion style in the movie 'Easy Rider (1969)', i.e. the representative new American movie which showed the isolation from adult generation and negative realities of the American society. From the movie, we can understand the young generation after the Vietnam war, i.e. baby boom generation, pursued the hippie culture as their young culture. With their strong self-consciousness, they formed their own lifestyle and values which are different from those of adult generation, and we can understand clothes were used as a tool to express their value system.