A Taxonomy on State of the Art Vital Signs Detection Methods: Classifications, Comparisons and Challenges

Nagyeong Lee(이나경),Paulson E. N.,Jaebok Lee(이재복),Hongseok Jung(정홍석),Sunwoo Kim(김선우) 한국통신학회 2022 한국통신학회 학술대회논문집 Vol.2022 No.2

Human health status can be mainly determined from the available vital signals parameters that can be acquired directly from the body. Sensing vital signs (VSs) can be categorized into: contact-based techniques and contact-less based techniques. This paper presents a concise taxonomy on state of the art VSs detection methods. It also highlights its classifications, comparisons and challenges, with a view to providing a one stop material towards understanding techniques for detecting VSs.

Traumatic perinatal events and educational needs of labor and delivery room nurses in Korea: a cross-sectional survey

Lee Nagyeong,Lee Gunjeong 한국여성건강간호학회 2024 여성건강간호학회지 Vol.30 No.1

Purpose: The present study investigated experiences of traumatic perinatal events, the provision of related education, and educational needs of nurses working in the labor and delivery room (LDR).Methods: Nurses working in the LDRs of six institutions and two nurse portal sites were invited to participate in the survey, delivered on paper or online. The data were collected from October 1 to November 25, 2022. Data from 129 nurses were analyzed using frequency, the chi-square test, the Fisher exact test, the t-test, and analysis of variance.Results: Virtually all participants (98.6%) reported having experienced at least one traumatic perinatal event (dystocia, postpartum hemorrhage, neonatal congenital anomalies, severe maternal or neonatal injury, stillbirth, and maternal or neonatal death) while working in the LDR. The most shocking traumatic perinatal event experienced was the maternal or neonatal death (40.3%), but 24.8% of participants did not recall ever receiving education on the topic. About 63% of participants experienced traumatic perinatal events within a year of working in the LDR. The average score for education needs regarding traumatic perinatal events was 3.67±0.37 out of 4, and participants preferred simulation education as the most effective educational method.Conclusion: Since most of the participants had experienced various traumatic perinatal events in the early stages of working in the LDR and expressed a high level of need for education on traumatic perinatal events, it is necessary to provide more effective stimulation education programs in the early period of work in the LDR.

청소년기 여성의 신체활동 수준과 주요 참여 운동

이나경 ( Nagyeong Lee ) 한국보건사회연구원 2021 보건복지포럼 Vol.299 No.-

청소년기 신체활동 참여는 청소년기의 신체적, 정신적 건강뿐만 아니라 성인기 건강행태와 만성질환에도 영향을 미친다는 점에서 중요하다. 이 글에서는 여자 청소년의 신체활동 수준과 운동 경험을 파악하고자 하였으며, 이를 위해 남자 청소년과의 비교 결과를 제시하였다. 여자 청소년은 남자 청소년보다 신체활동 실천율이 낮았으며, 특히 근력강화운동에서 남녀 차이가 크게 나타났다. 청소년기에 경험하는 운동 종류에서도 여자 청소년은 걷기, 줄넘기, 훌라후프 등 생활운동과 라켓 운동에 참여한 경우가 많았고, 남자 청소년은 축구, 풋살, 족구, 농구 등 상대적으로 팀 운동 경험이 많았다. 여자 청소년의 신체활동을 장려하고 어렸을 때부터 다양한 운동을 경험할 수 있도록 학교 체육활동 활성화 등 다양한 정책적 노력이 필요하다. Physical activity in adolescence is important that it affects not only physical and mental health in adolescence, but also health behaviors and chronic disease in adulthood. To understand the physical activity of adolescent girls, this article analyzed differences in physical activity between adolescent girls and boys. Adolescent girls had lower rates of physical activity than adolescent boys, and there was a large difference between girls and boys, especially in muscle strengthening exercise. In terms of the types of exercise experienced in adolescence, girls participated in many daily sports such as walking, jumping rope, and holahoop, while boys participated in team sports such as soccer, futsal, foot volleyball, and basketball. Policy efforts such as activating school sports are needed to encourage physical activities of girls and to enable them to experience various physical exercises from an early age.

고정밀 UGV 측위를 위한 협력측위 기술 동향 조사

이나경(Nagyeong Lee),정홍석(Hongseok Jung),이재복(Jaebok Lee),김선우(Sunwoo Kim) 한국통신학회 2022 한국통신학회 학술대회논문집 Vol.2022 No.11

기계학습에 기반한 고분자 복합수지의 기계적 물성 거동 예측

이나경(Nagyeong Lee),신용범(Yongbeom Shin),신동일(Dongil Shin) 한국가스학회 2021 한국가스학회지 Vol.25 No.2

수소연료전지자동차를 비롯한 자동차 분야에서 성형 가공성과 기계적 특성이 우수한 고분자 복합수지에 대한 연구는 특정 기계적 특성을 갖춘 재료의 설계지원을 위한 Computer-Aided Engineering (CAE)으로 확대되고 있다. CAE 자동화는 소재의 기계적 특성 및 거동 예측이 선행되어야 하는데, 고분자 복합수지의 기계적 물성 예측은 단일물질과 달리, 바탕재와 보강재 간의 관계로만 설명하기에는 물성 거동이 복잡하기에, 수식으로 설명하기 어렵다. 본 연구에서는 큰 소성 구간과 조성에 예민하여 예측이 어려웠던 고분자 복합수지의 조성에 따른 응력-변형률 선도를 데이터의 기계학습을 기반으로 예측하였다. 개발모델은 바탕재, 보강재 종류 및 조성간의 복잡한 상관관계를 찾아, 학습한 시험 데이터가 없는 조건에서도 전체 응력-변형률 곡선을 의미있게 예측한다. 학습하지 않은 조성과 구성에 대해서도 고분자 복합수지의 기계적 특성을 예측하는 개발 모델을 기반으로 향후 소재 설계 AI 시스템을 완성할 수 있을 것으로 기대한다. Research on polymer matrix composites with excellent molding processability and mechanical properties in the automotive field including hydrogen fuel cell electric vehicles is expanding to Computer-Aided Engineering (CAE) to support the design of materials with specific mechanical properties. CAE automation requires the prediction of the mechanical properties and behavior of materials. Unlike single materials, the mechanical properties prediction of polymer matrix composites is difficult to explain with formulas because the mechanical behavior is complicated to be explained only by the relationship between the matrix and the filler. In this study, the stress-strain curve according to the composition of polymer matrix composites, which was difficult to predict due to its sensitivity to large plastic deformation and composition, was predicted based on machine learning of the test data. The developed model finds a complex correlation between matrix and filler types and compositions, and predicts the total stress-strain curve meaningfully even in the absence of learned test data. It is expected that the material design AI system can be completed in the future based on the developed model that predicts the mechanical properties of polymer matrix composites even for the combination and composition that have not been learned.

여자청소년의 양성평등의식과 신체활동: 남녀 청소년 비교를 통해

이나경 ( Lee Nagyeong ),김남순 ( Kim Nam-soon ) 대한보건협회 2021 대한보건연구 Vol.47 No.4

연구 목적 : 남녀 청소년의 신체활동 관련 경험 비교를 통해 여자청소년의 양성평등의식과 신체활동의 연관성을 파악하고자 하였다. 연구 방법 : 전국 청소년 1,500명을 대상으로 ‘청소년 성평등인식과 신체활동 경험조사(2019)’를 실시하여, 남녀 청소년의 양성평등의식, 신체활동 실천율 및 관련 요인을 비교하였다. 또한 양성평등의식과 신체활동 실천의 연관성을 파악하고자 다중로지스틱회귀분석을 실시하였다. 연구 결과 : 여자청소년이 남자청소년보다 양성평등의식이 더 높았고, 신체활동 실천율은 더 낮았다. 여자청소년은 연령이 낮을 수록, 어머니의 신체활동 지지가 높을수록 신체활동 실천율이 높았지만, 양성평등의식이 높을수록 주 3일 이상 격렬한 신체활동 실천은 더 낮은 것으로 나타났다. 반면, 남자청소년은 양성평등의식과 신체활동 실천 간에 통계적으로 유의한 연관성을 보이지 않았고, 여자청소년과 동일하게 남자청소년도 연령이 낮을수록 신체활동 실천율이 더 높았다. 결론 : 이 연구에서는 여자청소년의 연령과 어머니의 신체활동 지지가 신체활동과 연관성이 있는 요인으로 나타났다. 여자청소년의 양성평등의식은 높았지만, 양성평등의식과 신체활동 실천 간에는 역 상관관계가 나타났다. 향후 여자청소년의 신체활동 실천에 영향을 줄 수 있는 다양한 요인을 고려한 심층적인 연구가 필요하다. Purpose : This study examined the association between egalitarian gender norms and physical activity among adolescent girls in South Korea through comparison with adolescent boys. Methods : A nationwide survey of 1,500 Korean adolescents was analyzed. We compared egalitarian gender norms, physical activity and socio-demographic variables related with physical activity of adolescent girls and boys. To investigate the association between egalitarian gender norms and physical activity, multiple logistic regression models were used. Results : Adolescent girls had a higher awareness of egalitarian gender norms than boys, however the prevalence of physical activity was lower than boys. Younger girls or girls whose mother support their physical activity had a higher likelihood of physical activity. Adolescent girls who had higher awareness of egalitarian gender norms had a lower likelihood of physical activity. In contrast there was no statistically significant association between egalitarian gender norms and physical activity in adolescent boys. Conclusion : This finding shows that age and mother’s support for physical activity were associated with physical activity of adolescent girls. Girls had a higher awareness of gender equality but there was an inverse association between awareness of gender equality and physical activity. In the future, In-depth research is needed considering various factors that could affect physical activity of adolescents.

제네릭 의약품에 대한 일반 소비자의 인식과 특성

이나경(Nagyeong Lee),박실비아(Sylvia Park) 대한약학회 2023 약학회지 Vol.67 No.1

This study aimed to understand the general public’s perception of the definition and equivalence of generic medicines, and to identify factors associated with the perception. We conducted a nationwide survey of the general public who are currently taking prescription drugs for chronic conditions or who filled at least one prescription in the prior 3 months. A total of 2,026 people were included in the analysis. Of the respondents, 21.0% knew the definition of generic medicines. Less than half of respondents considered generic medicines to be as effective (42.8%) as their original counterparts, and to have same side effects (37.1%) and same quality (35.0%). Also, respondents who were men, taking prescription drugs, and those of higher income or higher levels of education were more likely to know the definition of generic drugs. Higher trust in pharmaceutical equivalence of generic medicines were associated with being male, higher education and knowing the definition of generic medicines. This result implies that consumers having more ability to acquire information tend to have more knowledge on generic medicines. Consumers’ trust in generic medicines seems to build from their knowledge rather than experience of using generic medicines. Information should be given to consumers more effectively in order to enhance their knowledge and perceptions on generic medicine.

실시간 위치 트래킹과 파노라마 시점 보간을 이용한 병동 적응 VR 프로그램

여나경(Nagyeong Yeo),이도경(Dokyung Lee),이영은(YoungEun Lee) 한국통신학회 2019 한국통신학회 학술대회논문집 Vol.2019 No.6

5G 무선 통신 채널 모델링 기술 동향 조사

이나경(Nagyeong Lee),이재복(Jaebok Lee),정홍석(Hongseok Jung),김선우(Sunwoo Kim) 한국통신학회 2022 한국통신학회 학술대회논문집 Vol.2022 No.6

AI 기반의 재료 설계를 위한 고분자 복합수지의 기계적 거동 예측 기계학습 모델링

이나경(Nagyeong Lee),강주은(Jueun Kang),이재욱(Jaewook Lee),신동일(Dongil Shin) 한국가스학회 2021 한국가스학회 학술대회논문집 Vol.2021 No.5