• Title/Summary/Keyword: DO-254

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A study of U.S. and European electronic hardware guidelines for aviation system : RTCA DO-254 and ECSS-Q-ST-60-02C (항공 시스템용 전자 하드웨어 개발을 위한 미국 및 유럽의 가이드라인 : RTCA DO-254와 ECSS-Q-ST-60-02C의 비교 분석 연구)

  • Kim, Sung Hoon;Kim, Hyun Woo;Chae, Hee Moon;Kim, Ki Du
    • Journal of Aerospace System Engineering
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    • v.16 no.4
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    • pp.10-16
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    • 2022

  • Since aviation systems are developed as the complex form of software a hardware, the necessity to apply to relevant guidelines is increasing. It is however uncommon that international development guidelines regarding electronic hardware are applied to current domestic aviation systems. In this paper, we compare and analyze DO-254 and ECSS-Q-ST-60-02C, electronic hardware development guidelines with the case of KASS (Korea Augmentation Satellite System) Performance Suitability, based on the project of SBAS (Satellite Based Augmentation System) development and construction.

  • https://doi.org/10.20910/JASE.2022.16.4.10 인용 PDF KSCI

The Incidence and Mortality for Hip Fracture in the Elderly in Jeju-do (제주도 노인에서 고관절 골절 발생률과 사망률)

  • Kim, Ho-Bong
    • The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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    • v.15 no.2
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    • pp.44-49
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    • 2009

  • Purpose : The purpose of this study was to evaluate the incidence and mortality for hip fracture in the elderly in Jeju-do. Methods : We enrolled 254 cases among 318 patients older than 50 years of age with a hip fracture during two years period(2003-2004). We investigated the incidence and mortality during follow up 3~4 years period until December 31, 2007. Results : The crude incidences of hip fracture the age group ${\geq}50$ years were 141(11.2/10,000) in 2003, 177(13.6/10,000) in 2004, and 249(17.0/10,000), 69(6.3/10,000) for women and men, respectively. The mean age of them was 78.3 years, male was 69(21.7%), female was 249(78.3%) among 318 patients. Survivor was in the 146(57.5%), death was in the 108(42.5%) among 254 cases period for follow up. In the death group, activity was significantly lower at the time of post-fracture 3(p=0.013), 6(p=0.000), and 12 months(p=0.000). The mortality of hip fracture and crude death rate(CDR) were 108(42.5%, n=254), 11,884(1.7%, n=675,889) in 2003~2007 in Jeju. Conclusion : Developing and applying a variety of activity programs that increase activity in post-fracture may improve activities of daily living, reduce burden of family and society, be useful in improving the quality of life and ultimately lower the mortality.

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