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Development of the East Asian Cyclones: A Potential Vorticity Perspective
Seok-Woo Son,Joonsuk M. Kang 한국기상학회 2021 한국기상학회 학술대회 논문집 Vol.2021 No.10
The development processes of the extratropical cyclones passing the Korean Peninsula during the period of 1979-2017 are quantitatively evaluated in the potential vorticity (PV) perspective. A feature tracking algorithm is applied to the ERA-Interim reanalysis data to objectively identify the distinct northern- and southern-track (NT and ST) cyclones affecting the region in the cool season. The dynamic and thermodynamic contributions to the development of these two categories of cyclones are then comparatively assessed. With respect to the 850- hPa geostrophic relative vorticity tendency resulting from the PV tendency inversion, it is quantified that the NT cyclones develop 87.9% dynamically and 6.2% thermodynamically. In contrast, the respective contributions are 71.8% and 43.5% for the ST cyclones. The excessive or insufficient contributions are complemented by non-explicit processes. In both NT and ST cyclones, the zonal PV advection in the upper troposphere is the most influential for the dynamic development, while nonlinear advection being more important in the former. The larger thermodynamic contribution of the latter is attributed to more latent heating being involved in the development, which produces more lower-level PV and reduces damping from vertical PV advection. These results indicate that East Asian cyclones passing the Korean Peninsula have different development processes depending on their tracks.
육주혜,손병창,공진용,이준석,오도영,강인학 대한재활공학회 2008 보조공학저널 Vol.2 No.1
본 연구의 목적은 장애인 개개인의 맞춤형 보조기구 서비스 요구를 분석하는 것이다. 이를 위해 우리나라에서 유일하게 전 연령 장애인 대상으로 다양한 보조기구를 개인별 맞춤형 서비스 과정을 통해 제공하고 있는 경기도재활공학서비스연구지원센터의 3년간 122건의 사례기록을 분석하였다. 분석 내용은 센터의 일반정보, 이용자 장애정보, 일상생활을 위한 보조기구 요구 사항, 이동기기 및 센터 이용 교통수단, 보조기구 서비스 과정이었다. 연구 결과를 기반으로 제시한 보조기구 서비스 과정은 초기상담, 상담/평가, 영역별 기능평가, 기구 적용, 종합계획수립, 사례회의, 시험적용, 기구대여 또는 지원, 사용자 훈련/기능 향상 평가, 종결 및 사후관리이다. The purpose of the study was to suggest individualized assistive technology service process. The researchers investigated 122 cases from 2004 to 2007 of GyeongGi-Do Assistive Technology Research & Assistance Center (ATRAC) that provided individualized assistive technology service and various assistive technology devices to people with disabilities of all ages. General information, disability, assistive technology needs in daily living, wheeled mobility & transportation, and assistive technology service process of 122 case records were analyzed. Based on the results of the study, the individualized assistive technology service process consisted of intake, consultation & assessment, functional evaluation, application of various devices in the center, planning, case conference, application of recommended devices in the user's environment, device lease or provision, user training & evaluation of functional improvement, and completion & follow-up.