초등학교 고학년 아동의 자아존중감이 스마트폰 의존도에 미치는 영향: 사회적 위축을 통한 부모 구조제공의 조절된 매개효과

구혜민,이승은,이예슬,김현경 한국아동학회 2022 한국아동학회 학술발표논문집 Vol.2022 No.4

매립지 내 음폐수 주입율 향상을 위한 생물학적 전처리에 관한 연구

구혜민,이준철,김재형,이윤경,강설송,장원석,박대원 한국에너지학회 2013 한국에너지공학회 학술발표회 Vol.2013 No.5

광촉매 활용을 위한 TiO₂ 나노튜브 제조기술 개발

구혜민,이용호,박대원,Koo, Hyemin,Lee, Yongho,Pak, Daewon 한국물환경학회 2015 한국물환경학회지 Vol.31 No.4

In this study $TiO_2$ nanotube was grown on Ti by anodic oxidation to be used as a photocatalyst. The growth and formation of $TiO_2$ nanotube was monitored during anodization in ethylene glycol electrolyte by changing voltage and composition of electrolyte. Commercially available titanium plate (purity>99.8%, thickness:1mm) Applied voltage and concentration of $NH_4F$ and $H_2O$ were varied to find the optimum condition. Applied voltage is important to make $TiO_2$ nanotube and the electrolyte containing ethylene glycol, 0.2 wt% $NH_4F$ and 2 vol% $H_2O$ was confirmed to be the optimum conditions for the formation and growth of $TiO_2$ nanotubes.

초등학교 고학년 아동의 자아존중감이 스마트폰 의존도에 미치는 영향: 사회적 위축을 통한 부모 구조제공의 조절된 매개효과

구혜민,이승은,이예슬,김현경 한국아동학회 2022 아동학회지 Vol.43 No.4

Objectives: This study examined the extent to which children’s self-esteem influenced their smartphone dependency through social withdrawal and whether this mediating path would vary depending on parents’ provision of structure. Methods: This study included data on 2,394 fourth-grade elementary school children(boys, n = 1191; M = 10 years old, SD = .09), taken from the 2018 Korean Children and Youth Panel Survey conducted by the National Youth Policy Institute. Descriptive statistical analysis and correlation analysis were conducted using SPSS 26.0. In addition, the Process Macro No. 8 model was used to examine the moderated mediating effects of social withdrawal and parental provision of structure. Results: It was found that children’s self-esteem significantly and directly influenced their smartphone dependency, and indirectly influenced smartphone dependency through social withdrawal. Parents' provision of structure significantly moderated the association between children's self-esteem and social withdrawal, and the association between children’s self-esteem and smartphone dependency. Parents’ provision of structure also moderated the mediating effect of social withdrawal in the path between children’s self-esteem and smartphone dependency. This suggests that a high level of parental structure strengthens the beneficial effects of children’s self-esteem on smartphone dependency through reduced social withdrawal. Conclusion: This study examined how children’s individual characteristics and parenting behavior interact to influence children’s smartphone dependency. The findings highlight the importance of developing and implementing parent programs to support positive parenting practices and promote children’s healthy adjustment

LFG 증대를 위한 음폐수의 생물학적 연속공정 전처리에 관한연구

구혜민,이준철,김재형,이윤경,강설송,임준혁,김낙주,장원석,박대원 한국에너지학회 2013 한국에너지공학회 학술발표회 Vol.2013 No.11

자기통제와 처벌확신이 관광객 일탈행동에 미치는 영향에 관한 연구: 목표지향적행동 모형을 적용하여 한국과 미국 비교

구혜민,정지연 한국마이스관광학회 2024 MICE관광연구 Vol.24 No.1

The purpose of this study is to examine the effects of self-control and certainty of punishment on deviant tourist behaviors by applying the model of a goal-oriented behavior. A total of 911 data was collected from South Korea and the United States to compare two cultures based on the Hofstede’s indulgence-seeking index. Certainty of punishment had significantly negative effects on both groups, but self-control had significant effects on the United States group only. In the group with a high indulgence-seeking index, self-control in daily life increased attitudes, desire, and intentions toward deviant behavior, while certainty of punishment suppressed the desire for deviant behavior. This study has academic and practical significance in that it confirms the antecedent variables for intention to deviant behavior and confirms the existence of differences according to cultural values.

Healthcare Costs for Acute Hospitalized and Chronic Heart Failure in South Korea: A Multi-Center Retrospective Cohort Study

구혜민,강석민,정욱진,이해영,유병수,최진오,한성우,장지은,이의경 연세대학교의과대학 2017 Yonsei medical journal Vol.58 No.5

Purpose: Although heart failure (HF) is recognized as a leading contributor to healthcare costs and a significant economic burdenworldwide, studies of HF-related costs in South Korea are limited. This study aimed to estimate HF-related costs per Korean patient per year and per visit. Materials and Methods: This retrospective cohort study analyzed data obtained from six hospitals in South Korea. Patients with HF who experienced ≥one hospitalization or ≥two outpatient visits between January 1, 2013 and December 31, 2013 were included. Patients were followed up for 1 year [in Korean won (KRW)]. Results: Among a total of 500 patients (mean age, 66.1 years; male sex, 54.4%), the mean 1-year HF-related cost per patient was KRW 2,607,173, which included both, outpatient care (KRW 952,863) and inpatient care (KRW 1,654,309). During the post-index period, 22.2% of patients had at least one hospitalization, and their 1-year costs per patient (KRW 8,530,290) were higher than those of patients who had only visited a hospital over a 12-month period (77.8%; KRW 917,029). Among 111 hospitalized patients, the 1-year costs were 1.7-fold greater in patients (n=52) who were admitted to the hospital via the emergency department (ED) than in those (n=59) who were not (KRW 11,040,453 vs. KRW 6,317,942; p<0.001). Conclusion: The majority of healthcare costs for HF patients in South Korea was related to hospitalization, especially admissions via the ED. Appropriate treatment strategies including modification of risk factors to prevent or decrease hospitalization are needed to reduce the economic burden on HF patients.

경쟁 반응을 이용한 마이크로 반응기의 혼합 평가 연구

구혜민,이태규,송광호,최재훈 한국공업화학회 2012 한국공업화학회 연구논문 초록집 Vol.2012 No.-

한국 청소년의 가당음료 섭취 관련 건강 행동 요인 분석

구혜민,박종,류소연 대한지역사회영양학회 2018 대한지역사회영양학회지 Vol.23 No.3

Objectives: This study was conducted to measure the intake rate of SSBs (sugar sweetened beverages) and examine the relationship between health behavior factors and SSBs intake by adolescents. Methods: This study used data from the 2016 Korea Youth Risk Behavior Web-based Survey, which included 65,528 study participants. SSBs intake frequency was measured by asking respondents if they consumed soda, high-caffeinated beverages, and sugary drinks during the previous week. Type of intake was categorized into three groups according to the number of consumed drinks [SSBs (0): None; SSBs (1-2): 1 or 2 consumed; SSBs (3): 3 consumed]. Multinomial logistic regression analysis was used to examine health behaviors that affected SSBs consumption. Results: Increased SSBs intake was significantly correlated with current smoking (OR=2.4, 95% CI=1.82-3.17), current drinking (OR=2.13, 95% CI=1.82-2.51), sedentary time increase (OR=1.31, 95% CI=1.15-1.49), three days or more physical activity per week (OR=1.12, 95% CI=1.02-1.24), <8 hours sleep (OR=1.6, 95% CI=1.43-1.78), increased internet usage time (OR=1.44, 95% CI=1.25-1.65). Conclusions: Sugar-sweetened beverages intake by Korean adolescents was associated with health behaviors such as smoking, drinking, sedentary time increase, more physical activity, poor sleeping time, and increased internet use time. Based on these results, it is necessary to recognize the influence of SSBs intake and to intervene to reduce consumption of SSBs.

확장된 계획행동이론을 적용한 매춘관광 의도 연구 -성매매에 대한 인식과 사전지식의 역할을 중심으로-

구혜민,정지연 한국관광학회 2021 관광학연구 Vol.45 No.5

Using the extended theory of planned behavior, this study was to analyze the effects of ethical and social perceptions, human rights perceptions, and health perceptions related to prostitution, as prerequisite variables on the attitudes and behavioral intentions of sex tourism. Structural equation model analysis and ANCOVA were performed to test hypotheses using a total of 304 valid questionnaire responses. Results showed that ethical and social perceptions and health perceptions had a significant negative effect on attitudes toward sex tourism, whereas human rights perceptions did not. It was also found that attitude and subjective norm had a significant positive effect on behavioral intentions, but perceived behavioral control did not significantly affect sex tourism intentions. In particular, it appeared that the ethical and social perception had a significant total negative effect on the intention of sex tourism. In the moderating effect analysis, using prior knowledge of prostitution-related laws, the group with high prior knowledge level had a relatively lower influence on behavior of sex tourism attitudes than the group with low level of prior knowledge. However, ANCOVA found no significant differences between the two groups, indicating that moderating effects differ by gender. This study has academic value in that it conducts an empirical study on sex tourism, a topic that is somewhat difficult to bring out in Korea. Results of this study could contribute to establishing effective policies to reduce illegal sex tourism. 이 연구는 성매매에 대한 윤리·사회적 인식, 성매매 종사자에 대한 인권적 인식, 보건적 인식을 선행변수로 하여 매춘관광에 대한 태도와 행동 의도에 미치는 영향에 대하여 확장된 계획이론에 적용하여 분석하였다. 총 304부의 유효한 설문지 응답에 대하여 기술통계분석, 탐색적 요인 분석, 확인적 요인 분석, 구조방정식모형 분석, 및 공분산분석을 시행하였다. 성매매에 대한 윤리·사회적 인식과 보건적 인식은 매춘관광 태도에 유의한 부정적 영향을 미쳤으나, 성매매 종사자 인권에 대한 인식은 매춘관광 태도에 유의한 영향을 미치지 않았다. 매춘관광 태도와 주관적 규범은 행동 의도에 유의한 정(+)의 영향을 미쳤지만, 지각된 행동통제는 매춘관광 의도에 유의한 영향을 미치지 않았다. 특히 성매매에 대한 윤리·사회적 인식은 총 효과에서도 매춘관광 행동의도에 유의한 부(-)의 영향을 미쳤다. 성매매 관련 법률 사전지식을 조절변수로 한 조절 효과 분석에서는, 매춘관광이 불법이라는 사전지식 수준이 높은 집단이 낮은 집단보다 매춘관광 태도가 행동에 미치는 영향도가 상대적으로 낮았다. 즉, 성매매 법률 사전지식은 매춘관광에 대한 행동 의도를 낮췄다. 하지만 공분산분석에서는 사전지식이 높은 그룹과 낮은 그룹 간의 태도와 행동의도에 유의한 차이가 없었으며, 남녀 간 조절효과의 차이가 있음을 확인하였다. 이 연구는 국내에서는 다소 꺼내기 어려운 주제인 매춘관광에 대한 실증적 연구를 시행하여 유의한 결과를 도출해냈다는 점에서 학술적 가치가 있을 뿐만 아니라, 향후 매춘관광을 줄이는 관련 정책을 마련하는데도 실질적인 기여를 할 수 있다는 점에서 실무적 가치도 있다.