• 제목/요약/키워드: ReSEAT

검색결과 144건 처리시간 0.026초

에어 서스펜션 시트의 구조 및 진동해석에 관한 연구 (A Study on Structure and Vibration Analysis of an Air Suspension Seat)

  • 하정수;이건명
    • 한국기계가공학회지
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    • 제16권6호
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    • pp.47-54
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    • 2017
  • This study analyzed air suspension seat frame structure and vibration for 50 - 180 kg mass driver to obtain optimum seat design parameter values for the equivalent spring constant and damping coefficient. Various air suspension seat frames were designed following WTS-003 and KS B 6839 standards, and then evaluated using finite elements analysis. Resonance and vibration tests were performed according to the 78/764/EEC standard.

새로운 미국 측면 신차안전도평가 결과에 대한 통계적 분석 (Statistical Review for New USNCAP Side Crash Test Results)

  • 범현균
    • 한국자동차공학회논문집
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    • 제21권2호
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    • pp.104-113
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    • 2013
  • New USNCAP has been carried out by NHTSA including front and side crash from MY2011. In this paper, test results for USNCAP Side crash were reviewed by statistical analysis. This review focused on side crash test results to investigate the effect of changes from new USNCAP side crash test protocol among 30 passenger cars. These results were summarized as followings. Total number of 5 star vehicles on the front seat dummy (16 vehicles, 53.3%) was slightly smaller than the rear seat's (17 vehicles, 56.7%) in MDB test. For the ES-2re dummy, chest injury, ie maximum rib deflection contributed to 66% in the mean value of $P_{joint}$. Pelvis injury was highly dependent upon performance up to 87% in the SID-IIs dummy cited on the rear seat in average $P_{joint}$. For Pole test, pelvis injury made contribution to the average performance to 83%. For standard deviation, it showed the largest value in the same body region as the mean value for each dummy. Overall front seat performance showed 14 vehicles, 44.6% with 5 star vehicles less than each MDB or Pole test result. This result showed that performances in MDB test were different pattern to Pole test on driver position. Number of 5star vehicles for overall side NCAP performance are 18 passenger cars (60%). Curtain airbag and driver thorax airbag were equipped in all test vehicles. One vehicle is equipped with thorax airbag in the rear seat. Results from two side tests considered as reliability problem, ie the cause for large standard deviation in side crash test. Consequently, the countermeasure for new USNCAP side crash test is essential to design the effective side structures for side collision and to control well dummy kinematics with curtain and thorax airbag in order to reduce chest and pelvis injuries.

생체용 마그네슘합금의 국가별 수준 분석 (Regional-level analysis of magnesium alloys for biomaterial)

  • 길상철;남수우;김환태
    • 한국산학기술학회:학술대회논문집
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    • 한국산학기술학회 2012년도 춘계학술논문집 2부
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    • pp.643-645
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    • 2012
  • 본 연구에서는 생체용 마그네슘의 국내외 연구 동향을 파악하기 위해 Web of Science 데이터베이스를 사용하여 SCI-E 학술지에 게재된 논문을 조사하여 분석하였다. 생체용 마그네슘합금에 관한 논문이 2005년부터 많이 발표되기 시작하여 2007년을 기점으로 급격하게 증가하기 시작하였다. 따라서 최근 생체 내에서 분해하여 소멸되는 임플란트의 필요성과 함께 마그네슘합금이 최적의 생체재료로 각광을 받으면서 이에 관한 연구가 5~7년 전부터 폭발적으로 활성화되었으며, 중국, 독일, 미국, 그리고 일본이 생체용 마그네슘합금 연구개발에 선도적인 역할을 하고 있음을 알 수 있었다.

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HTML5-based Web TV Industry Trends

  • Park, Sehwan;Kim, Jungho;Yu, Daesang;Park, Jongkyu
    • International Journal of Internet, Broadcasting and Communication
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    • 제5권2호
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    • pp.15-17
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    • 2013
  • The web service companies develop the App support technique of the HTML5 base in the smart media system and smart TV competitively while the Web platform of the HTML5 base is legislated with the next generation national standard. It is essential to the web kernel, which is the common library of the operating system including the file, window, resource and network management is provided in order to support the various app developments of the HTML5 base effectually. Additionally, the web application program can support UI/UX function of the desktop user using the web browser and JavaScript drive and administration, window management function, and etc. is needed.

다중 생체인식 기반의 인증기술과 과제 (Technology Review on Multimodal Biometric Authentication)

  • 조병철;박종만
    • 한국통신학회논문지
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    • 제40권1호
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    • pp.132-141
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    • 2015
  • 기존의 단일 생체인증 방법들은 인식과 식별이 주 용도이며 서비스 용도별 실시간 개인 인증보안은 취약하다. 이에 다중 생체인식기반의 실시간 입증 및 인증 기술을 통해 보안성능을 향상시키는 방법의 연구와 개발이 필수적이다. 본 논문은 생체인식기술의 다중 생체인식 파라미터를 조합하여 인증하는 선진 기술 및 특허동향 분석을 통해 국내 기술개발 전략과 과제를 제시하는데 중점을 둔다.