• 한국태양에너지학회 논문집
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• 제36권1호
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• pp.19-26
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• 2016

Biomass has been used for energy sources from the prehistoric age. Biomass are converted into solid, liquid or gaseous fuels and are used for heating, electricity generation or for transportation recently. Solid biofuels such as bio-chips or bio-pellet are used for heating or electricity generation. Liquid biofuels such as biodiesel and bioethanol from sugars or lignocellulosics are well known renewable transportation fuels. biogas produced from organic waste are also used for heating, generation and vehicles. Biomass resources for the production of above mentioned biofuels are classified under following 4 categories, such as forest biomass, agricultural residue biomass, livestock manure and municipal organic wastes. The energy potential of those biomass resources existing in Korea are estimated. The energy potential for dry biomass (forest, agricultural, municipal waste) were estimated from their heating value contained, whereas energy potential of wet biomass (livestock manure, food waste, waste sludge) is calculated from the biological methane potential of them on annual basis. Biomass resources potential of those 4 categories in Korea are estimated to be as follows. Forest biomass 355.602 million TOE, agricultural biomass 4.019 million TOE, livestock manure biomass 1.455 million TOE, and municipal organic waste 1.074 million TOE are available for biofuels production annually.

• Journal of Nutrition and Health
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• 제52권2호
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• pp.119-128
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• 2019

Purpose: This review article provides an overview of the importance of breakfast by examining the relationship between breakfast and academic achievement including the papers published in Korean. Methods: This study searched a total of six domestic and international databases. The main search words for searching the database were 'breakfast,' 'morning meal,' 'adolescent,' 'teen or teenage,' 'children' and 'academic performance,' and used search operators when available such as 'breakfast AND adolescent AND academic performance'. Results: We searched a total of 274 studies through six databases and included a total of 15 primary studies in which 12 studies were cross-sectional and three were cohort studies. Since a quantitative integration of the primary studies was difficult to achieve such as performing a meta-analysis, this study performed a descriptive analysis of all the 15 studies and the results have shown that eating breakfast has a significant effect on academic achievement. In other words, students who regularly had breakfast showed more than twice the academic performance compared to those who did not have breakfast, and even though the math scores of students who had breakfast were statistically significantly higher, none of the study results inferred the reason. Conclusion: This study showed the importance of eating breakfast during adolescence by presenting that academic achievement increases with regular or more frequent habits of eating breakfast.

• 대한건축학회논문집:계획계
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• 제36권4호
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• pp.31-39
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• 2020

The purpose of this study is to identify the relationship between general fear of crime and specific fear of crime. Also, it is to suggest the way of analyzing fear of crime by summing up the two concepts. This study finds a reason why fear of crime varies from person to person within the same sex and similar age group. In particular, this study intends to analyze the models that affect fear of crime to figure out which is relevant to those in the high-risk group. And with the results, we can devise measurements to effectively reduce fear of crime in a local community. The following facts have been found in this study: positive correlation between general fear of crime and specific fear of crime, method of subdividing group with fear of crime, models that affect fear of crime and sub-items that greatly relate to high-risk groups.

• 지역사회간호학회지
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• 제32권1호
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• pp.12-23
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• 2021

Purpose: This study explored how and why young and middle-aged adults disclose depressive feelings to others. In particular, we investigated the role of social norms to see whether using mobile instant messaging (MIM) could lower the perceived barriers of emotional disclosure. Furthermore, the motivations of emotional disclosure via MIM were compared between young and middle-aged adults. Methods: A total of 255 Koreans (128 middle-aged people, 127 young adults) participated in an online survey. Pearson's correlation coefficients, paired t-tests, SPSS PROCESS macro, and exploratory factor analysis were used to examine the relationships among the key variables. Results: The perceived social norms were found to be a significant deterrent in disclosing depressive feelings to others. However, there was a significant interaction effect between generations and perceived social norms. Although young adults with low social norm awareness were more likely to disclose depressive feelings via MIM, emotional disclosure among middle-aged adults increased with higher levels of perceived social norms. Also, different motivations were observed. Conclusion: The results confirmed the significant effect of social norms as well as generational differences when using MIM as a channel of emotional disclosure.

• 건축역사연구
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• 제31권1호
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• pp.51-60
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• 2022

In the 16~17th centuries, the construction of T-shaped pavilion in Gyeongsangbuk-do was centered on the families of the Goseong-Lee clan and Andong-Kwon clan, who had a lot of exchanges with each other near Andong. It can be presumed that the complex structure of the T-shaped pavilion was intended to represent the technology, economic power, and social influence of the clan. After the 18th century, construction areas spread and construction subjects were diversified, but the number of new constructions decreased. It can be seen that T-shaped pavilion was erected and used for public purposes rather than personal reasons in terms of layout or flat scale. The roof of the T-shaped pavilion is very diverse depending on the wooden structure, the height of the roof and the configuration of the apex. The T-shaped pavilion, which combines two parts, has been developed in a way that strengthens not only the appearance but also the structural bonding force. The bonding strength is strengthened through the process of "roof aligning", "roof bonding", "structure connection", and "structure integration", which shows a similar tendency to the age of actual cases.

• 한국정보처리학회:학술대회논문집
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• 한국정보처리학회 2022년도 추계학술발표대회
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• pp.55-56
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• 2022

Hypertension is a severe health problem and increases the risk of other health issues, such as heart disease, heart attack, and stroke. In this research, we propose a machine learning-based prediction method for the risk of chronic hypertension. The proposed method consists of four main modules. In the first module, the linear interpolation method fills missing values of the integration of gas and meteorological datasets. In the second module, the OrdinalEncoder-based normalization is followed by the Decision tree algorithm to select important features. The prediction analysis module builds three models based on k-Nearest Neighbors, Decision Tree, and Random Forest to predict hypertension levels. Finally, the features used in the prediction model are explained by the DeepSHAP approach. The proposed method is evaluated by integrating the Korean meteorological agency dataset, natural gas leakage dataset, and Korean National Health and Nutrition Examination Survey dataset. The experimental results showed important global features for the hypertension of the entire population and local components for particular patients. Based on the local explanation results for a randomly selected 65-year-old male, the effect of hypertension increased from 0.694 to 1.249 when age increased by 0.37 and gas loss increased by 0.17. Therefore, it is concluded that gas loss is the cause of high blood pressure.

• 한국컴퓨터정보학회논문지
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• 제28권12호
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• pp.9-22
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• 2023

본 논문에서는 인공지능의 무한한 발전 가능성을 유지하면서 공정성과 윤리적 책임을 유지하는 AI 규제에 대한 균형 잡힌 방안을 제시합니다. AI 시스템이 일상생활에 점점 더 통합됨에 따라, 특정 인구 집단에 대한 편견과 불이익을 방지하기 위한 규제 개발이 필수적입니다. 본 논문에서는 책임 있는 개발과 적용을 보장하기 위해 AI 애플리케이션의 규제 프레임워크와 사례 분석 연구를 진행합니다. 본 논문을 통하여 AI 규제에 대한 지속적인 논의를 이끌어내며, 혁신과 공정성 사이의 균형을 맞추는 정책을 수립을 제안합니다.

• 여성건강간호학회지
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• 제29권3호
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• pp.200-207
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• 2023

Purpose: The purpose of this study was to investigate the relationship between digital literacy and depressive symptoms, as well as the mediating role of social support in this relationship, among older women (60 years and older) in Korea. Methods: This study analyzed data from the User Experience Evaluation Survey, which was conducted by the Ewha Institute for Age Integration Research to improve the accessibility of digital information for older adults research from May to September 2020. Survey data on depressive symptoms, digital literacy, and social support were analyzed using descriptive statistics, Pearson correlation coefficients, and multiple regression. Results: The factors influencing depressive symptoms among older women included work status (B=-.19, p=.01), social support (B=-.17, p<.001), self-rated health (B=-.13, p=.003), and digital literacy (B=-.10, p=.005), which had an explanatory power of 33%. In addition, social support played a mediating role in the relationship between digital literacy and depressive symptoms (B=-.05, SE=.02; 95% CI, -.09 to -.02). Conclusion: The findings of this study support the need to develop and apply interventions that promote digital literacy among older women to mitigate depressive symptoms by increasing social support.

• Journal of Digestive Cancer Research
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• 제11권2호
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• pp.85-92
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• 2023

Colorectal cancer (CRC) is one of the most prevalent cancers and is the leading cause of cancer-related mortality worldwide. Based on the current screening guidelines by the American Cancer Society and Korean multi-society expert committee, CRC screening is recommended in asymptomatic adults starting at the age of 45 years. Fecal immunochemical test-based screening programs reduce the development of CRC and related mortality in the general population. However, this most popular CRC screening strategy demonstrates a crucial limitation due to modest diagnostic accuracy. Colonoscopy may be considered as an alternative primary method for CRC screening; however, its implementation can still be challenging due to concerns regarding invasiveness, low adherence, cost-effectiveness, and quality assurance. To overcome the limitations of current screening tests, innovative noninvasive tests for CRC screening have been developed with advances in molecular biology, genetics, epigenetics, and microbiomics for detecting CRC, which may enhance the approach to CRC screening and diagnosis in clinical practice in the near future. This review explores the emerging screening methods and discusses their potential for integration into current practice.

• Journal of Preventive Medicine and Public Health
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• 제57권4호
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• pp.319-326
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• 2024

Objectives: Despite the importance of choosing and using a valid assessment tool for fear of cancer recurrence (FCR) for early detection and interventions, the validity of the FCR inventory has yet to be thoroughly investigated in Korea. This study explored the psychometric properties of the Fear of Cancer Recurrence Inventory-Severity (FCRI-S) subscale and assessed its applicability to cancer survivors in Korea. Methods: The survey involved 93 Korean individuals who had survived cancer. The reliability of the FCRI-S subscale was assessed using Cronbach's α and composite reliability (CR). Confirmatory factor analysis (CFA), along with tests for discriminant and convergent validity, was conducted to evaluate the construct validity of the FCRI-S subscale. Results: The FCRI-S subscale showed excellent internal consistency (Cronbach's α=0.88; CR=0.89). CFA showed a good factor structure for the FCRI-S subscale, and the correlations of the FCRI-S subscale with FCR-related measures (r=0.69 to 0.80) and other psychosocial measures (r=-0.23 to 0.37) confirmed both the convergent and discriminant validity of the FCRI-S subscale. Conclusions: This study confirmed the robust psychometric characteristics of the FCRI-S subscale among cancer survivors in Korea. The use of the FCRI-S subscale would be helpful for health professionals to rapidly screen FCR levels in clinical settings.