http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
위성기반보정시스템(SBAS) APV-Ⅰ계기접근절차에 관한 실증 연구
양윤성,최상일,김현미,김휘양 한국항공운항학회 2022 한국항공운항학회지 Vol.30 No.1
Along with the remarkable advances in GNSS technology, SBAS further enhances the accuracy and integrity of GNSS location information and derives improvement in the safety and efficiency of air traffic management from reducing GNSS location errors, induced by passing through the ionosphere and atmosphere, to less than three meters. In this regard, ICAO specifies the standards of SBAS signals and recommends every party to phase in by 2025; and it is foreseeable that SBAS APV-I and CAT-I will be provided in South Korea by its undertaking the development of KASS, a Korean SBAS. The purpose of the study is to design SBAS APV-I procedure on the basis of the runway 15L of Incheon International Airport and conduct obstacle assessment according to PAN-OPS Doc. 8168, focusing on the usability and usefulness of SBAS APV-I. The results show that SBAS APV-I will provide better decision height compared to other PBN RNP approach procedures such as LNAV and Baro-VNAV at the Incheon International Airport.
OLED 레이저 실링용 글라스 프릿에서 V2O5 함량 및 가소성 분위기가 접합 특성에 미치는 영향
황종희,정현진,이미재,이영진,김진호,전대우,이정수,양윤성,육수경,박태호,문윤곤 한국전기전자재료학회 2016 전기전자재료학회논문지 Vol.29 No.8
In this study, the effect of vanadium oxide (V2O5) content and pre-sintering atmosphere on sealingproperty of glass frit that consisted of V2O5-BaO-ZnO-P2O5-TeO2-CuO-Fe2O3-SeO2 was investigated by XPS (X-rayphotoelectron spectroscopy). The content of V2O5 was changed to 15, 30, and 45 mol%, and the pre-sintering wascarried out in air and N2 condition, respectively. XPS analysis conducted before and after laser irradiation withidentical sample. Before laser treatment, glass frits that were pre-sintered at air condition showed both V4+and V5+,but the valence state was changed to V5+ after laser irradiation when the glass frits contained 30 and 45 mol%V2O5; this change led to non-adhesive property. On the other hand, glass frits that were pre-sintered at N2condition exhibited only V4+ and it showed fine adhesion irrespective of the V2O5 content. As a result, theexistence of V4+ seems to be a major factor for controlling the adhesive property of glass frit for laser sealing. 본 연구에서는 XPS 분석법을 이용하여 V2O5-BaO-ZnO-P2O5-TeO2-CuO-Fe2O3-SeO2 조성의 레이저 실링용 글라스 프릿에서 V2O5 함량 및 가소성 분위기가 접합 특성에 미치는 영향에 대해 고찰하였다. 글라스 프릿의 주성분인 V2O5 함량은 15, 30, 45 mol%으로 변화 시켰으며, 각각 대기 및 질소 분위기에서 가소성하였다. 레이저 조사 전, 대기 분위기에서 가소성한 모든 글라스 프릿 내 V은 V4+와 V5+ 상태로 모두 존재하지만, 레이저 조사 후에는 글라스 프릿의 V2O5 함량에 따라 V4+ 또는 V5+만 존재하였다. 특히, 레이저 조사 후, 유리 내 V5+만 존재할 경우에는 접합이 되지 않았다. 반면, 질소 분위기에서 가소성한 모든 글라스 프릿에는 V4+만 존재하는 것을 확인하였으며, 레이저 조사 후에도 V4+만 존재하였고 모두 접합이 잘 되었다. 따라서, 레이저 조사 후 글라스 프릿 내 V4+의 존재가 레이저 실링용 글라스 프릿의 접합 특성을 결정하는 주요한 요소로 작용하는 것으로 판단된다.
OLED 레이저 실링용 글라스 프릿에서 V<sub>2</sub>O<sub>5</sub> 함량 및 가소성 분위기가 접합 특성에 미치는 영향
정현진,이미재,이영진,김진호,전대우,황종희,이정수,양윤성,육수경,박태호,문윤곤,Jeong, HyeonJin,Lee, Mijai,Lee, Youngjin,Kim, Jin-Ho,Jeon, Dae-Woo,Hwang, Jonghee,Lee, Jungsoo,Yang, Yunsung,Youk, Sookyung,Park, Tae-Ho,Moon, Yun-Gon 한국전기전자재료학회 2016 전기전자재료학회논문지 Vol.29 No.8
In this study, the effect of vanadium oxide ($V_2O_5$) content and pre-sintering atmosphere on sealing property of glass frit that consisted of $V_2O_5-BaO-ZnO-P_2O_5-TeO_2-CuO-Fe_2O_3-SeO_2$ was investigated by XPS (X-ray photoelectron spectroscopy). The content of V2O5 was changed to 15, 30, and 45 mol%, and the pre-sintering was carried out in air and $N_2$ condition, respectively. XPS analysis conducted before and after laser irradiation with identical sample. Before laser treatment, glass frits that were pre-sintered at air condition showed both $V^{4+}$ and $V^{5+}$, but the valence state was changed to $V^{5+}$ after laser irradiation when the glass frits contained 30 and 45 mol% $V_2O_5$; this change led to non-adhesive property. On the other hand, glass frits that were pre-sintered at $N_2$ condition exhibited only $V^{4+}$ and it showed fine adhesion irrespective of the $V_2O_5$ content. As a result, the existence of $V^{4+}$ seems to be a major factor for controlling the adhesive property of glass frit for laser sealing.