Preconceptional use of folic acid and knowledge about folic acid among low-income pregnant women in Korea

Jihyun Kim,Miyong Yon,Cho-il Kim,Yoonna Lee,Gui-Im Moon,Jinhwan Hong,Taisun Hyun 대한지역사회영양학회 2017 Nutrition Research and Practice Vol.11 No.3

BACKGROUND/OBJECTIVES: Folic acid supplementation before pregnancy is known to significantly reduce the risk of having a baby with neural tube defects (NTDs). Therefore, it is important for women to be aware of the effects of folic acid supplementation before pregnancy. The purpose of this study was to investigate the awareness and preconceptional use of folic acid and to assess the current knowledge about folic acid among low-income pregnant women in Korea. SUBJECTS/METHODS: A questionnaire survey was conducted in 2012. Five hundred pregnant women were selected from the waiting list for the Nutriplus program implemented in public health centers using a multistage clustered probability sampling design. Data from 439 women were analyzed after excluding ones with incomplete answers. RESULTS: Among women who responded to the questionnaire, 65.6% had heard of folic acid before pregnancy, and 26.4% reported on the preconceptional use of folic acid. Women with a university degree or higher education were more likely to be aware of folic acid and to take folic acid in the preconception period. In a multivariate logistic regression, when age, education level, household income, employment status, gravidity, parity, and folic acid awareness were included in the model, folic acid awareness was a strong predictor of preconceptional folic acid use. As of interview, 85.4% and 77.7% of women were aware of the NTD-preventive role of folic acid and the appropriate time to take folic acid, respectively. The main sources of information on folic acid were healthcare professionals (41.2%), friends and family members (31.2%), and the media (26.5%). CONCLUSIONS: Our results suggest that public health strategies are needed to increase the preconceptional use of folic acid among Korean women.

Factors Influencing Health Promoting Behaviors in Workplace Employees

Jihyun Lee,Sun Ae Kim,Jong Im Kim,Hyojin Won 한국간호과학회 2015 한국간호과학회 학술대회 Vol.2015 No.10

딥 러닝 기반 얼굴 메쉬 데이터 디노이징 시스템

노지현(Jihyun Roh),임현승(Hyeonseung Im),김종민(Jongmin Kim) 한국전기전자학회 2019 전기전자학회논문지 Vol.23 No.4

3차원 프린터나 깊이 카메라 등을 이용하면 실세계의 3차원 메쉬 데이터를 손쉽게 생성할 수 있지만, 이렇게 생성된 데이터에는 필연적으로 불필요한 노이즈가 포함되어 있다. 따라서, 온전한 3차원 메쉬 데이터를 얻기 위해서는 메쉬 디노이징 작업이 필수적이다. 하지만 기존의 수학적인 디노이징 방법들은 전처리 작업이 필요하며 3차원 메쉬의 일부 중요한 특징들이 사라지는 문제점이 있다. 본 논문에서는 이러한 문제를 해결하기 위해 딥 러닝 기반의 3차원 메쉬 디노이징 기법을 소개한다. 구체적으로 본 논문에서는 인코더와 디코더로 구성된 컨볼루션 기반 오토인코더 모델을 제안한다. 메쉬 데이터에 적용하는 컨볼루션 연산은 메쉬 데이터를 구성하고 있는 각각의 정점과 그 주변의 정점들 간의 관계를 고려하여 디노이징을 수행하며, 컨볼루션이 완료되면 학습 속도 향상을 위해 샘플링 연산을 수행한다. 실험 결과, 본 논문에서 제안한 오토인코더 모델이 기존 방식보다 더 빠르고 더 높은 품질의 디노이징된 데이터를 생성함을 확인하였다. Although one can easily generate real-world 3D mesh data using a 3D printer or a depth camera, the generated data inevitably includes unnecessary noise. Therefore, mesh denoising is essential to obtain intact 3D mesh data. However, conventional mathematical denoising methods require preprocessing and often eliminate some important features of the 3D mesh. To address this problem, this paper proposes a deep learning based 3D mesh denoising method. Specifically, we propose a convolution-based autoencoder model consisting of an encoder and a decoder. The convolution operation applied to the mesh data performs denoising considering the relationship between each vertex constituting the mesh data and the surrounding vertices. When the convolution is completed, a sampling operation is performed to improve the learning speed. Experimental results show that the proposed autoencoder model produces faster and higher quality denoised data than the conventional methods.

전자문서에 대한 효율적인 장기적 검증 방법

유지현(Jihyun Yoo),임익수(Iksoo Im),신용태(Yongtae Shin) 한국정보과학회 2013 정보과학회논문지 : 정보통신 Vol.40 No.1

인터넷과 통신의 발달로 온라인상의 전자상거래가 활성화되고, 전자문서와 전자거래의 신뢰성 문제를 해결하기 위해 전자서명의 중요성이 높아지고 있다. 최근에는 이러한 전자적으로 생성된 계약서, 청약서, 기타 장기적으로 보관해야 하는 전자문서 등의 보다 효과적인 활용을 위하여 오프라인 문서를 대체하고자 하는 요구가 많아졌다. 이를 위해서는 전자적으로 보관되어 있는 전자문서의 진본성이 확인이 되어야 법적인 유효성을 확보하게 되는데 여기에 사용되는 기술이 바로 전자서명이며 전자문서생성시에 사용된 공인인증서의 유효성을 확인하고 난 후 전자서명 값 확인을 통해 위 변조 사실을 증명하게 된다. 하지만 공인인증서의 유효기간은 1년이기 때문에 전자문서가 2년 혹은 그 이전에 작성된 것이라면 공인인증서의 유효성을 확인할 수 없고 전자문서의 진본성을 확인할 수 없게 된다. 본 논문은 이러한 문제점을 해결하기 위해 SCVP를 통한 전자문서의 진본성 확인 방안을 제시하고자 한다. With development of internet and communication, electronic commerce is revitalized and the importance of digital document and digital signature are growing. Recently days, users hope to replace off line paper with electronic documents to efficient using these contracts, subscription documents and other documents should be stored during long-term which were created by electronic method . For this, we need to check stored documents whether it is the original copy or not through PKI system which proves the integrity of document check certificate validation and compare the value of singing with a genuine writing. There is a problem not to validate the document due to the period of certificate that can be used only 1 year. If the certificate were used for digital signature 3 years ago, we cannot validate certificate because it was already revoked. In order to solve this problem, we propose efficient long-term validation method of digital document even if certificate is expired.

Development and characterization of high efficiency fine dust filter

Taein Im,Yongkyun Lee,Jiyong Jeong,Sungwoo Han,Oyoung Kwon,Jihyun Bae,Woonjung Kim 한국분석과학회 2017 학술대회논문집 Vol.2017 No.11

인물 중심 쇼트클립 자동 생성 시스템

임동혁(Im Dong-Hyuck),서용석(Seo Yong-Seok),박지현(Park Jihyun) 한국통신학회 2019 한국통신학회 학술대회논문집 Vol.2019 No.6

Optimization of disinfection by-product analysis methods for IMO G9 approval

Lee, Jihyun,Sim, Wonjin,Im, Youngkeun,Hwang, Euntae,Heo, Jinju Elsevier 2018 MARINE POLLUTION BULLETIN Vol.126 No.-

<P><B>Abstract</B></P> <P>This study assessed the methods for analyzing disinfection by-products (DBPs) to determine which were most suitable for ballast water in an approval test according to the Procedure for Approval of Ballast Water Management Systems that make use of Active Substances (G9). The existing analysis methods are optimized for drinking water. Therefore, it is necessary to assess the characteristics of ballast water, which has high levels of total residual oxidants (TROs) and salinity, prior to applying the existing methods. Sample preservation, pre-treatment and instrumental analysis methods were summarized based on certified test methods and the G9 final approval reports. Following the assessment, applicable methods were selected in consideration of the matrix effect arising from the high levels of TROs and salinity. The applicability was assessed using seawater and brackish water. The results are expected to be applied to the G9 test as well as in investigations of DBPs in ballast water.</P> <P><B>Highlights</B></P> <P> <UL> <LI> This study assessed analytical methods for disinfection by-products for G9 approval. </LI> <LI> Sample preservation was improved to remove a high level of total residual oxidant. </LI> <LI> Optimum analytical methods were finalized through a matrix effect assessment. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>[DISPLAY OMISSION]</P>

The Moderator and Mediator Effect of Self-esteem in Relationship between Pain and Depression in Breast Cancer Patients

Jong Im Kim,Jihyun Lee,Sun Ae Kim 한국간호과학회 2015 한국간호과학회 학술대회 Vol.2015 No.10

Adherence to Dietary Guidelines among Diabetes Patients: Comparison between Elderly and Non-Elderly Groups

( Haeun Jang ),( Jihyun Im ),( Kyong Park ) 한국임상영양학회 2021 Clinical Nutrition Research Vol.10 No.1

This study aimed to compare adherence to dietary guidelines between elderly and non-elderly individuals with type 2 diabetes mellitus (T2DM) in Korea. Data of 4,577 participants with T2DM were collected from the 1998-2015 Korea National Health and Nutrition Examination Surveys. The participants were classified into two groups based on age: non-elderly T2DM group comprising participants aged 30-64 years and elderly T2DM group comprising participants aged ≥ 65 years. Adherence to dietary guidelines was assessed using the Korean Diabetes Association-Korean Ministry of Health and Welfare (KDA-KMHW) index, comprising six components of dietary guidelines for T2DM patients. Multivariable generalized linear regression analysis was performed to analyze the KDA-KMHW index scores. The adherence levels to the individual components of the KDA-KMHW index were mostly lower in non-elderly group (p < 0.001) than elderly group, except for moderate carbohydrate consumption. The total KDA-KMHW index score was significantly lower in non-elderly T2DM group than in the elderly T2DM group (p < 0.001). The study results suggest the need for developing patient-specific education programs that focus on adherence to dietary guidelines, particularly for non-elderly patients, to adequately intervene with the difficulties experienced in T2DM dietary management.

빅데이터를 활용한 재난 안전 관리시스템 사례 조사

이지현(Lee, Jihyun),박민수(Park, Minsoo),정대교(Jung, Dae-kyo),임정현(Im, Junghyun),박승희(Park, Seunghee) 대한토목학회 2019 대한토목학회 학술대회 Vol.2019 No.10