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벨트와 더미 변수가 5th-percentile 성인 여성 하이브리드 III 더미의 서브마리닝 발생에 미치는 영향에 관한 연구
김다영,조아현,김종민,김태웅 한국기계기술학회 2022 한국기계기술학회지 Vol.24 No.6
Submarining is a phenomenon in that the lap belt goes over the pelvis of the occupant during a frontal crash. It is known to be one of the causes of serious abdominal injuries for the belted occupant. The goal of the current study was to investigate the effect of both the belt geometry and dummy variations on the occurrence of submarining. A series of quasi-static belt-pull tests were performed to evaluate the influence of the parameters on the occurrence of the submarining. The main influencing factor of the submarining was the lap belt angle. The tear or wrinkle of the dummy clothing and torso angle relative to the pelvis also affected the propensity of the submarining. Therefore, these parameters need to be closely monitored to obtain repeatable test results.
데이터셋 구축 및 선별을 통한 준지도 학습 기반 범용 신호등 인식 성능 개선
김다영,이성우,김학일 제어·로봇·시스템학회 2024 제어·로봇·시스템학회 논문지 Vol.30 No.8
. Traffic light recognition in autonomous driving is an essential but very challenging task because its performance is affected by unpredictable environmental conditions. Moreover, the shapes and installations of traffic lights in various countries require a lot of cost and time to collect a huge dataset and train a deep learning model. This study develops a method for constructing training datasets with minimal resource expenditure for more efficient and universally applicable traffic light recognition. It aims to develop a deep learning scheme that can universally recognize various international traffic light configurations by replacing the initial supervised learning stage with a phase that can recognize multiple types of traffic lights and improve performance through self-supervised learning on new datasets. Additionally, this study introduces a data selection algorithm that enables robust recognition under changes in road conditions by enhancing adaptability across diverse environments. This research not only demonstrates improved recognition performance in hazardous road situations but also concludes with potential for efficient application worldwide. Experimental results showed 24.2% improvement in mAP50, even with the same proportion of labeled data, and similar performance with half the labeled data.
경관자원 조사체계 구축에 관한 기초연구- 당진시 경관자원조사 사례를 중심으로 -
김다영,신윤지,장혜원,이송희,위재송,주신하 한국경관학회 2018 한국경관학회지 Vol.10 No.2
This study was designed to establish a step-by-step system for the research of the landscape resources and prepare an integrated management plan through a research of all areas in Dangjin. The research method first identified the current status and implications of the research on landscape resources through prior research and case analysis, and adopted and reorganized the research form to establish basic survey methods and scope. The established system was applied to investigate general landscape resources in the entire jurisdiction of Dangjin. Also, the selection and investigation of important police resources will be carried out in the future in order to prepare for the management and utilization of resources that are the most important objective of the survey. The survey system for general landscape resources was the first to collect data such as plans and reports related to the view at the time of Dangjin, and to draw up a list of resources derived through classification by type and area and CODE. Next on based on the prepared list of landscape resources, the government finally selected general landscape resources to investigate based on the selection criteria. In order to carry out a research survey of selected landscape resources, a preliminary research table was prepared to identify basic information about the resources. Afterwards, a detailed research of resources was conducted to prepare an indicator for selecting important landscape resources. Finally, the residents' workshops were conducted to encourage residents to participate in the research through communicating the cause and purpose of the landscape resources research, and additional landscape resources were excavated, supplemented, and fielded. Although this study is meaningful in establishing a step-by-step system through the actual application of the survey, it is deemed that it is necessary to apply the research methods and processes according to the size and characteristics of the target site, so it is deemed as integrated into the integrated into the management.
국민건강 영양조사 자료를 바탕으로 알아본 우리나라 당뇨병 환자의 인플루엔자 예방접종의 실태
김다영,윤나라 대한내과학회 2015 대한내과학회 추계학술발표논문집 Vol.2015 No.1
서론: 당뇨병 환자들은 인플루엔자와 관련된 합병증이 발생할 확률이 높아 인플루엔자 예방접종을 권장하고 있다. 이 연구에서는 국민 건강 영양조사 자료를 바탕으로 우리나라의 당뇨병 환자들의 예방접종률을 알아보고 이와 관련된 인자들을 알아보고자 하였다. 연구방법: 제3차 국민 건강영양조사(2005), 제4차국민 건강영양조사(2007-2009), 제5차 국민 건강영양조사(2010-2012)에서 선정된 성인 당뇨병 환자를 대상으로 하였으며 일반적인 특성과 당뇨병과 관련된 자료, 인플루엔자 예방접종 상태를 자기 보고 설문조사를 통해서 문의한 후 수집하였다. 인플루엔자 예방접종률과 그와 관련된 요소는 카이 제곱 검정과 다중로지스틱 회귀분석을 통해 분석하였다. 결과: 전체 당뇨병 환자의 57.9% 가 인플루엔자 예방접종을 받았다. 연령별로 보면 65세 이상에서 예방접종률은 70%이상이었으며 19-44세에서는 25.3%였다. 65세 이상에서는 고령, 여성, 정기적으로 건강검진을 받는 환자, 당뇨병 관리에 대한 교육을 받는 환자가 예방접종의 중요한 요소가 되었다. 결론: 당뇨병 환자의 인플루엔자 예방접종률은 기대치보다 낮은 상태이며 특히 젊은 환자에서 낮았다. 따라서 당뇨병 환자의 인플루엔자 예방접종율을 향상시키기 위한 노력이 필요하다.