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과학언론인 칼럼 - 과학기술은 대선 주자들의 들러리인가
장재열,Jang, Jae-Yeol 한국과학기술단체총연합회 1997 과학과 기술 Vol.30 No.7
이번 15대 대통령 선거는 과학기술의 진정한 의미를 알고 국정을 이끌 수 있는 인물을 가려내야 한다. 과학기술인들은 과학기술을 들러리로 여기는 위장된 대선 주자가 누구인지를 가려내고 대통령에 당선된 이후에도 약속을 잘 지키는지 철저히 감시해야한다.
Crown-Rump Length Measured in the Early First Trimester as a Predictor of Low Birth Weight
장재열,박은주,양윤석,박미라,박원일 연세대학교의과대학 2013 Yonsei medical journal Vol.54 No.4
The aim of this study is to assess the association between crown-rump length (CRL) measured before the 10th gestational week and birth weight. Results from 316 transvaginal ultrasonography scans at the 46th, 53rd, 60th, 67th, and 74th days of pregnancy were compared in low birth weight (LBW) versus normal birth weight groups. A positive correlation between CRL and birth weight was observed when CRL was measured at days 60, 67, and 74. CRL measured on the 67th day of pregnancy was significantly smaller in the LBW group than in the normal birth weight group. A cut-off value of CRL=26.5 mm measured at day 67 has the highest power to predict LBW.
클라우드 컴퓨팅 기반 항만 BIM 서비스를 위한브라우저 설계
장재열,문현석 한국BIM학회 2018 KIBIM Magazine Vol.8 No.4
The port BIM technology has many problems such as lack of relevant system, high cost of BIM infrastructure construction, and process difference of existing domestic inter-industry. Since the port facilities as national key industries are managed and operated by public organizations, it is necessary to integrate IT resources and have a system that needs collective construction and joint utilization management. In this paper, we proposed the convergence of cloud computing technology and BIM as a way to reduce the infrastructure cost required for port BIM operation and to provide various BIM services for domestic process. To do this, we collected system requirements based on demand surveys of port staff and designed a BIM browser that provides IFC-based BIM server and customized services to reduce infrastructure cost in cloud computing environment. In terms of infrastructure, we designed cloud-based IaaS to support cost reduction, which is an essential component, and designed SaaS to support customized services in terms of services. We will perform performance verification with focus on whether port BIM servers and browsers have reached a level where they can manage four BIM models with different types and capacities.