LUR(Land Use Regression) 모델을 활용한 경로별 미세먼지 노출위험도 추정기법 - 시흥시 정왕동을 대상으로

조윤주(Yoonju Cho) 대한공간정보학회 2021 한국지형공간정보학회 학술대회 Vol.2021 No.11

본 연구는 "경로"라는 좁은 공간적 범위의 미세먼지 노출 위험도를 비교하기 위해 LUR(Land Use Regression) 모델을 적용했으며, 이는 오염요소와의 거리 혹은 밀집도를 독립변수로 미세먼지와 같은 대기오염물질 농도를 예측하는 이론이다. 시흥시 정왕동에 위치한 미세먼지 오염요소를 정의하고, OLS(Ordinary Least Square)와 GWR(Geographically Weighted Regression)을 수행햐여 PM2.5 실측값과 상관성이 높은 오염요소를 독립변수로 설정하였다. 각 오염요소로부터의 영향이 시간대별로 다르기 때문에 매시간 24개(1시~24시) 케이스로 나누어 분석했으며, 0.8 이상의 설명력(Adjusted R²)을 가진 독립변수 조합을 도출하였다. 또한 IDW(Inverse Distance Weighted Interpolation) 이론을 적용하여 경로별로 가까이에 위치한 측정기들의 실시간 PM2.5 값을 받아오도록 모델을 구성함으로써 실시간성을 확보하였다. 따라서 본 연구를 통해 미세먼지 예측과 실측을 연계하여 경로별 미세먼지 노출위험도를 추정하는 분석기법을 제시하고자 한다.

유아의 의사소통 능력이 사회적 유능성에 미치는 영향에서 또래놀이의 이중 매개효과

조윤주(Yoonju Cho) 한국아동학회 2023 아동학회지 Vol.44 No.2

부모의 양육태도가 아동의 스마트폰 의존에 미치는 영향에서 온라인 여가의 매개효과

조윤주(Yoonju Cho) 한국아동학회 2021 아동학회지 Vol.42 No.6

Objectives: This study investigated the impact of positive and negative parenting attitudes on smartphone dependency in children to examine the mediating effects of online-based leisure such as computer usage, game, and smartphone usage. Methods: Data of 714 children scoring above the top 30% of smartphone dependency among the children in 5th grade in elementary school were collected through the 2nd wave of the Korean Children and Youth Panel Survey (KCYPS 2018). Structural Equation Modeling (SEM) was applied to analyze the mediating effects with the Bootstrapping method by SPSS 21.0 and AMOS 20.0. Results: In the model, online-based leisure significantly mediated the relationship between positive parenting attitudes such as warmth, autonomy support and structure provision, and smartphone dependency showing complete mediation. Also, negative parenting attitudes such as rejection, coercion, and chaos directly negatively affected smartphone dependency, not showing a mediating effect. Results indicate that increased positive parenting attitudes lead to reduced smartphone dependency through decreasing online-based leisure, while negative parenting attitudes lead to increase dependence on the smartphone. Conclusion: While positive parenting attitudes do not directly affect smartphone dependency, they lead to a decrease in online-based leisure. Consequently, as online-based leisure lessens, smartphone dependency subsequently may also be diminished. In addition, although negative parenting attitudes have no mediating effect, they directly influence the growing smartphone dependency. Results confirm that positive parenting mediate the effects of online-based activities in relation to smartphone dependency when parents provide the most structure, autonomy support, and warmth to their children. Practical implications are discussed, and relevant interventions offered for children and parents.

어머니의 불안정 성인애착이 유아의 놀이방해행동에 미치는 영향에 대한 어머니의 양육스트레스의 매개효과

조윤주 ( Cho Yoonju ),김은혜 ( Kim Eun Hye ),박재영 ( Park Jaeyoung ),장경은 ( Jahng Kyung Eun ) 한국유아교육학회 2021 유아교육연구 Vol.41 No.3

본 연구는 어머니의 불안정 성인애착을 불안애착과 회피애착으로 나누어 각각이 유아의 놀이방해행동에 미치는 영향과 이 영향력에 대한 어머니의 양육스트레스의 매개효과를 조사하였다. 연구대상은 만 3~5세 유아 222명과 그들의 어머니이다. 수집된 자료는 PROCESS Macro를 사용하여 분석하였다. 연구결과는 다음과 같다. 첫째, 어머니의 불안애착 수준이 높을수록 유아의 놀이방해행동 정도가 높아지고, 어머니의 회피애착 수준이 높아질수록 유아의 놀이방해행동 수준이 높아졌으며 어머니의 양육스트레스 수준이 높아질수록 유아가 놀이방해행동을 많이 보이는 것으로 나타났다. 둘째, 어머니의 양육스트레스는 어머니의 불안정 성인애착 중 불안애착과 유아의 놀이방해행동 간의 관계와 회피애착과 놀이방해행동 간의 관계를 모두 매개하는 것으로 드러났다. 이러한 연구결과는 어머니의 양육스트레스를 완화시키기 위하여 어머니를 위한 양육지원 및 정신건강 관리 프로그램 등을 개발하고 제공할 필요가 있음을 시사한다. This study examined the mediating effect of mothers’ parenting stress on the relationship between their insecure adult attachment and their children’s disruptive play behavior. Research participants consisted of 222 children aged 3 to 5 and their mothers. Data were analyzed using PROCESS Macro. The results of the study are as follows. First, higher levels of the mothers’ anxious attachment were positively associated with higher levels of their children’s disruptive play behavior. Moreover, higher levels of their avoidant attachment were positively associated with higher levels of their children’s disruptive play behavior. Higher levels of their parenting stress were positively associated with higher levels of their children’s disruptive play behavior. Second, the mothers’ parenting stress mediated the relationship between their anxious attachment and their children’s disruptive play behavior, as well as the relationship between their avoidant attachment and their children’s disruptive play behavior. These findings indicate that it is necessary to provide mothers with programs supporting their parenting and mental health in order to alleviate their parenting stress.

유아의 미디어 이용이 또래상호작용에 미치는 영향에서 언어발달의 매개효과

조윤주(Yoonju Cho) 한국아동학회 2016 아동학회지 Vol.37 No.5

Objective: This study explored the mediating effects of language development on the influences of young children`s media use on positive and negative peer interactions. Methods: The data came from the 2013 Panel Study on Korean Children (N = 1,215) and were analyzed to assess the mediating effects of media use on positive and negative peer interactions, using SEM with the bootstrapping method by means of SPSS 21.0 and AMOS 20.0. Results and Conclusion: The results show that increased media use affects positive and negative peer interactions through language development. This indicates that, while media use does not directly affect positive and negative peer interactions, it appears to increase the difficulty of developing language ability; as the language development worsens, undesirable peer interactions may develop. Thus, language development seems to play an important mediating role between media use and peer interactions. Theoretical and practical implications are discussed.

기독 아동의 스마트폰 의존이 삶의 만족도에 미치는 영향: 우울의 매개효과

조윤주(Yoonju Cho) 한국기독교교육정보학회 2020 기독교교육정보 Vol.0 No.64

본 연구의 목적은 스마트폰 의존이 기독 아동의 삶의 만족도에 영향을 미치는 과정에서 우울의 매개변인이 직접 및 간접효과를 나타내는 지를 매개모형을 설정하여 검증하는 데 있다. 연구대상은 한국아동청소년패널조사(Korean Children and Youth Panel Survey [KCYPS])의 6차 연도 자료에 해당하는 6학년 아동 중 종교가 기독교이면서 스마트폰을 사용한다고 답한 477명을 대상으로 하였다. 자료의 분석은 SPSS 21.0과 AMOS 20.0 (IBM Co., Armonk, NY)을 사용하였고 구조방정식 모형을 이용하여 매개효과 분석에 효과적인 부트스트랩 방식(Bootstrapping method)을 적용하였으며 적합도 지수를 통해 연구모형에 대한 적합도를 평가하였다. 연구결과, 기독 아동의 스마트폰 의존은 우울에 부정적인 영향을 미쳤고, 우울의 증가는 다시 삶의 만족도에 부정적인 영향을 미침으로써 스마트폰 의존의 매개효과가 유의한 것으로 나타났다. 본 연구의 매개모형은 삶의 만족도에 대한 스마트폰 의존의 간접효과가 유의한 가운데 직접효과가 나타나지 않아 완전 매개효과가 나타났다. 이러한 결과는 기독 아동의 삶의 만족도에서 부정적인 자기 정서로서 우울이 중요한 역할을 한다는 점과 스마트폰 의존이 삶의 만족도에 미치는 부정적인 영향을 저지하기 위해서는 우울의 정서가 증가되지 않도록 적절한 예방과 개입이 이루어져야 한다는 점을 제시해 준다. 연구의 함의 및 기독교적 개입 방안에 대한 제언이 다각적으로 논의되었다. This study investigated the impact of smartphone dependency on life satisfaction to examine the mediating effect of depression in Christian children. Data was Christian children from the 6th wave of the Panel Study on Korean Children(N = 477). Structural Equation Modeling (SEM) was used to analyze the mediating effect with Bootstrapping method using SPSS 21.0 and AMOS 20.0. In a mediation model, depression significantly mediated the relationship between smartphone dependency and life satisfaction showing complete mediation. Results showed that increased smartphone dependency has affected life satisfaction concerning how well Christian children are satisfied in their whole life through depression. This indicates that whereas smartphone dependency itself does not directly affect life satisfaction, it leads to increase depression; consequently, as depression grows, the life satisfaction of Christian children tends to be diminished. This confirms that depression plays an important mediating role between smartphone dependency and life satisfaction in Christian children. Theoretical and practical implications are discussed and offered relevant suggestions for family, church, Christian schools and future studies.

학령후기 아동의 스마트폰 의존에 대한 종단적 변화와 예측요인

조윤주(Yoonju Cho) 한국아동학회 2019 아동학회지 Vol.40 No.6

Objectives: The studys aim was to investigate the trajectory of smartphone dependency and to find the associated factors predicting smartphone dependency. Methods: Data were obtained from the fourth (2013) to the seventh (2016) Korean Children and Youth Panel Survey studies (N = 1,248). The trajectory of smartphone dependency was analysed using the Latent Growth Curve Model with SPSS 21.0 and AMOS 20.0. Results and Conclusions: Over the four-year period, smartphone dependency showed a linear increase along with significant individual differences in intercept and slope. For girls, the trajectory of smartphone dependency, higher depression, increased computer and game time, parental abuse, affectionate and inconsistent parenting, and lower academic attitude had significant effects and showed a higher degree of intercept. Escalating trajectory patterns were associated with identification of predictors and early development of smartphone dependency. The factors identified may be useful in the development of intervention for smartphone dependency. The theoretical and practical implications of the findings are discussed.

스마트폰 이용이 유아의 학교준비도에 미치는 영향

조윤주(Yoonju Cho) 한국아동학회 2018 아동학회지 Vol.39 No.4

Objective: This study was conducted to investigate the mediating effects of self-control in the relationship between preschoolers smartphone use and school readiness. Methods: Data from the 7th wave of the Panel Study on Korean Children(N = 1,078). Mediating effect was analyzed using Structural Equation Modeling with Bootstrapping method utilizing SPSS 21.0 and AMOS 20.0. Results: Results showed that increased smartphone use has affected school readiness concerning social and emotional development, communication, approach to learning and cognitive development and general knowledge through self-control. Conclusion: This indicates that while smartphone use itself does not directly affect school readiness, it seems to impede developing self-control; consequently, as self-control weakens, certain developmental domains for readiness to school may be hindered. This confirms that self-control plays an important mediating role between smartphone use and school readiness. Theoretical and practical implications, as well as limitations, are discussed.

Effectiveness of Escherichia coli-expressed STF2-GnRH as an immunocontraceptive vaccine in female cats

조윤주(Yoonju Cho),박병주(Byung Joo Park),황보람(Bo Ram Hwang),이영아(Young Ah Lee),최인수(In Soo Choi),한진수(Jin Soo Han) 한국예방수의학회 2022 예방수의학회지 Vol.46 No.1

Long-term non-surgical contraceptive methods for cats, especially community cats, are of global interest for cost-effective and humane reasons. This study aimed to investigate the effectiveness of a gonadotropin-releasing hormone (GnRH)-based vaccine for immunocontraception and to confirm its safety in intact female cats. Recombinant Salmonella typhimurium flagellin fljB (STF2)-GnRH protein was expressed in Escherichia coli. We divided female cats into vehicle control group (n = 4) and two experimental groups (100 μg injection group [n = 7] and 1000 μg injection group [n=7]), and immunized them twice intramuscularly (0.2 mL/cat at zero week and 4 weeks later into the other leg). Breeding trials started on day 120. All control cats (n = 4/4), 71% of the 100 μg injection group (n = 5/7), and 57% of the 1000 μg injection group (n = 4/7) became pregnant within 203 days after the introduction of male cats. The 1000 μg injection group had significantly a longer median time to conception following treatment (166 days) than the control (17 days, p < 0.05). Average litter size was significantly lower in the 1000 μg GnRH-vaccinated cats (2.8 ± 0.7) than in the control cats (4.5 ± 0.5, p < 0.05). Injection site reactions were not observed in any cat. The E. coli-expressed STF2-GnRH vaccine did not provide contraception in a sufficient proportion of the cats. However, it might be effective to suppress fertility through infertility vaccines before inducing permanent infertility through the trap-neuter-return.

사용자 감정분석에 기반을 둔 맞춤형 정신건강 도움 서비스 디자인 제안

양은정(EunJung Yang),이민희(MinHui Lee),조윤주(YoonJu Cho) 한국디자인학회 2021 한국디자인학회 학술발표대회 논문집 Vol.2021 No.5