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일반논문 : 성인자녀가 중년여성의 노동공급에 미치는 영향
이에스더 ( Lee Esther ) 한국여성경제학회 2013 여성경제연구 Vol.10 No.2
본 연구는 우리나라 중년 기혼여성의 노동공급에 미혼 성인자녀가 미치는 영향에 대해 분석한다. 성인자녀가 중년 기혼여성의 노동공급을 촉진시킬 가능성은 우리나라의 높은 대학진학률과 최근 두드러지는 대학 교육년수의 증가 및 청년 실업문제와 같은 현상에서 찾아볼 수 있다. 본 연구는 중년 기혼여성이라는 특정 연령대의 기혼여성을 대상으로 성인자녀의 유무뿐만 아니라 성인자녀의 특성으로 비취업 효과를 살펴본다. 분석 결과에 의하면 20대 자녀를 지닌 여성일수록 경제활동참가율이 높게 나타나고, 특히, 저학력 여성에게서 성인자녀의 비취업이 여성의 노동시장 (재)진입을 촉진하는 것으로 나타났다. This paper analyzes the effects of adult children on middle-aged women`s labor supply. The possibility of adult children effect, adult children can promote their mothers` labor supply, is in correlation with higher college enrollment rates, longer average length of time to graduate college and lower labor participation rate among young people in South Korea. Using KLIPS(Korean Labor and Income Panel Study) data, it shows that adult children, especially in twenties can have a significant effect on the labor supply of married women. It also suggests that qualitative characteristics of a woman`s child can be one of the factors affecting the labor force participation of mothers as well as quantitative differences. In this case, the employment status matters. This study suggests that middle-aged mothers, in particular, low-educated mothers who have unemployed adult child are more likely to be involved in economic activities compared to mothers whose adult child is employed.
순환굵은골재 치환율 및 양생방법에 따른 콘크리트의 압축강도특성
전에스더(Jeon Esther),윤현도(Yun Hyun-Do),최기선(Choi Ki-Sun),유영찬(You Young-Chan),이세현(Lee Sea Hyun),이도헌(Lee Do-Heun) 대한건축학회 2007 대한건축학회 학술발표대회 논문집 - 계획계/구조계 Vol.27 No.1
Recycling demolished concrete as an alternative source of coarse aggregates for the production of new concrete can help solve the growing waste disposal crisis and the problem of depleted natural aggregates. However, to make such recycling feasible, the strength and durability of the recycled aggregate concrete must be assured. In this paper, fresh(air contents, slump) properties and the compressive strength of recycled aggregate concrete according to curing method are investigated experimentally. Concrete specimens were fabricated by ready-mix concrete and tested with different recycled coarse aggregate replacement level of 0%, 30%, 60% and 100%, respectively. For recycled coarse aggregate concrete, the change of air contents were bigger than natural coarse aggregate concrete. The air-cured/water cured strength ratio of recycled coarse aggregate concrete was 84.23~99.39%. Compressive strength of concrete with different recycled coarse aggregate replacement level was shown to be similar.
20년 이상 결혼생활을 유지하고 있는 부부의 부부애착과 결혼안정성의 관계에서 정서표현의 매개효과
이에스더(Esther Lee),정혜정(Hyejeong Chung),고경자(kyungja ko) 학습자중심교과교육학회 2023 학습자중심교과교육연구 Vol.23 No.20
목적 본 연구의 목적은 20년 이상 장기결혼을 유지하고 있는 기혼남녀가 지각한 부부애착이 결혼안정성에 미치는 영향을 살펴보고 부부애착과 결혼안정성의 관계에서 정서표현의 매개효과를 분석함으로써 기혼남녀가 결혼생활을 지속하려는 요인이 되는 결혼안정성을 높일 수 있는 방안을 모색하는데 있다. 방법 연구참여자는 기혼 남자 149명, 여자 205명이며2022년 10월~12월까지 자기보고식 설문방식으로 자료를 수집하였다. 본 연구의 목적을 달성하기 위해 spss 22.0 통계 프로그램을 사용하여 통계처리를 하였고, 신뢰도를 살펴보기 위해 Chonbach, a를 산출하였다. 그리고 빈도, 백분율, 차이검증을 위해 t-검증과 F-검증을 하였는데 사후 검증으로 Duncan 검증을 실시하였으며 상대적 영향력과 매개효과를 알아오기 위해 중다회귀분석을 실시하였다. 결과 연구결과 첫째, 차이 검증에서 결혼안정성과 부부애착은 성별에 따라 유의한 차이가 있었다. 둘째, 부부애착과 정서표현이 결혼안정성에 미치는 영향을 살펴보기 위해 중다회귀분석을 실시하였고 결혼안정성에 가장 큰 영향을 미치는 변인은 회피애착으로 나타났다. 마지막으로 부부애착과 결혼안정성의 관계에서 정서표현은 독립변인으로서 유의한 영향을 미쳤으나 매개효과를 나타내지 않았다. 결론 이러한 결과는 기혼남녀의 결혼안정성 향상을 도울 수 있는 프로그램 개발 및 교육 등 상담현장에서 필요한 실질적인 기초자료를 제공할 수 있을 것이다. Objectives This study aimed to investigate the influence of marital attachment on marriage stability in the recog-nition of married for more than 20 years and investigating the mediating effect of emotional expressiveness on the relationship between marital attachment and marriage stability to find ways how to improve. Methods Marriage stability to be one of factor to continue their marriage relationship among married men and women the participants of this study were 149 married male and 205 married female and data were collected by self-report questionnaire. Results First, there were significant differences on marriage stabillity and emotional expressiveness depending on religion, Second, multiple regression analysis were performed to investigate the influences of marital attach-ment and emotional expressiveness on marriage stavility. And avoidance attachment were statistically significant variation on marriage stabillity. Finally, emotional expressiveness was significant as a independent variable in the relationship between marital attachment and marriage stability, however the mediating effect of it was not found to be significant. Conclusions The results of this study can be used as basic and practical data in the field of counseling for program development and education etc to improve marriage stability.
기후 변화에 따른 제주도 표선 유역의 함양률 및 수위변화 예측
신에스더,고은희,하규철,이은희,이강근,Shin, Esther,Koh, Eun-Hee,Ha, Kyoochul,Lee, Eunhee,Lee, Kang-Kun 한국지하수토양환경학회 2016 지하수토양환경 Vol.21 No.6
Global climate change could have an impact on hydrological process of a watershed and result in problems with future water supply by influencing the recharge process into the aquifer. This study aims to assess the change of groundwater recharge rate by climate change and to predict the sustainability of groundwater resource in Pyoseon watershed, Jeju Island. For the prediction, the groundwater recharge rate of the study area was estimated based on two future climate scenarios (RCP 4.5, RCP 8.5) by using the Soil Water Balance (SWB) computer code. The calculated groundwater recharge rate was used for groundwater flow simulation and the change of groundwater level according to the climate change was predicted using a numerical simulation program (FEFLOW 6.1). The average recharge rate from 2020 to 2100 was predicted to decrease by 10~12% compared to the current situation (1990~2015) while the evapotranspiration and the direct runoff rate would increase at both climate scenarios. The decrease in groundwater recharge rate due to the climate change results in the decline of groundwater level. In some monitoring wells, the predicted mean groundwater level at the year of the lowest water level was estimated to be lower by 60~70 m than the current situation. The model also predicted that temporal fluctuation of groundwater recharge, runoff and evapotranspiration would become more severe as a result of climate change, making the sustainable management of water resource more challenging in the future. Our study results demonstrate that the future availability of water resources highly depends on climate change. Thus, intensive studies on climate changes and water resources should be performed based on the sufficient data, advanced climate change scenarios, and improved modeling methodology.
잔골재 입경에 따른 고인성 섬유보강 시멘트 복합체의 압축강도 특성
전에스더 ( Jeon Esther ),이원석 ( Lee Won-suk ),변장배 ( Byun Jang-bae ),윤현도 ( Yun Hyun-do ) 한국구조물진단유지관리공학회 2006 한국구조물진단유지관리공학회 학술발표대회 논문집 Vol.10 No.2
HPFRCC(High performance fiber reinforced cementitious composite) have made major advances in recent years, to the point where they are being adopted in building and bridge constructions. The most significant advantage of HPFRCC over conventional concrete is their high tensile ductility. But HPFRCC reduced economic efficiency due to silica sand and short fiber of expensiveness to exhibit strain-hardening accompanied by multiple cracking. This study is a part of series of researches to replace silica sand in HPFRCC to fine aggregate. The objective of this study was to investigate the compressive strength properties of HPFRCC according to fine aggregate size under cyclic loading for using fine aggregates as substitution of silica sand. As fine aggregate size are bigger, compressive strength and elastic modulus of PVA and PE HPFRCC were decreased under cyclic loading within the scope of this research.
이효찬,박인학,임태호,문대철,Lee, Hyo-Chan,Park, In-hag,Im, Tae-ho,Moon, Dai-Tchul 한국정보통신학회 2020 한국정보통신학회논문지 Vol.24 No.3
인간의 눈과 같이 이미지에서 유용한 정보를 추출하는 기능은 인공지능 컴퓨터 구현에 필수적인 인터페이스 기술이다. 이미지에서 건물을 인식하여 추론하는 기술은 다양한 형태의 건물 외관, 계절에 따른 주변 잡음 이미지의 변화, 각도 및 거리에 따른 왜곡 등으로 다른 이미지 인식 기술 보다 인식률이 떨어진다. 지금까지 제시된 컴퓨터 비전(Computer Vision) 기반의 건물 인식 알고리즘들은 건물 특성을 수작업으로 정의하기 때문에 분별력과 확장성에 한계가 있다. 본 논문은 최근 이미지 인식에 유용한 딥러닝의 CNN(Convolutional Neural Network) 모델을 활용하는데 건물 외관에 나타나는 변화, 즉 계절, 조도, 각도 및 원근에 의해 떨어지는 인식률을 향상시키는 새로운 방법을 제안한다. 건물 전체 이미지와 함께 건물의 특징을 나타내는 부분 이미지들, 즉 창문이나 벽재 이미지의 데이터 세트를 함께 학습시키고 건물 인식에 활용함으로써 일반 CNN 모델 보다 건물 인식률을 약 14% 향상됨을 실험으로 증명하였다. The ability to extract useful information from an image, such as the human eye, is an interface technology essential for AI computer implementation. The building recognition technology has a lower recognition rate than other image recognition technologies due to the various building shapes, the ambient noise images according to the season, and the distortion by angle and distance. The computer vision based building recognition algorithms presented so far has limitations in discernment and expandability due to manual definition of building characteristics. This paper introduces the deep learning CNN (Convolutional Neural Network) model, and proposes new method to improve the recognition rate even by changes of building images caused by season, illumination, angle and perspective. This paper introduces the partial images that characterize the building, such as windows or wall images, and executes the training with whole building images. Experimental results show that the building recognition rate is improved by about 14% compared to the general CNN model.