This study utilizes association rule learning and clustering analysis to explore the co-occurrence and relationships within ecosystems, focusing on the endangered brackish-water snail Clithon retropictum, classified as Class II endangered wildlife in Korea. The goal is to analyze co-occurrence patterns between brackish-water snails and other species to better understand their roles within the ecosystem. By examining co-occurrence patterns and relationships among species in large datasets, association rule learning aids in identifying significant relationships. Meanwhile, K-means and hierarchical clustering analyses are employed to assess ecological similarities and differences among species, facilitating their classification based on ecological characteristics. The findings reveal a significant level of relationship and co-occurrence between brackish-water snails and other species. This research underscores the importance of understanding these relationships for the conservation of endangered species like C. retropictum and for developing effective ecosystem management strategies. By emphasizing the role of a data-driven approach, this study contributes to advancing our knowledge on biodiversity conservation and ecosystem health, proposing new directions for future research in ecosystem management and conservation strategies.

A total of 481,414 Korean participants aged 40-79 years at enrollment were examined. The hazard ratios for all-cause, all-cancer, and head and neck cancer mortality were analyzed using Cox proportional hazards models, which were adjusted for potential confounding factors. In the overall study population, the highest AST/ALT ratio level was significantly associated with risk of all-cause, all-cancer, and head and neck cancer mortality (p < 0.01). After excluding participants who died of all-cause, all-cancer, and head and neck cancer within five years of enrollment, the main results remained similar to those of the analysis of all deaths in the study population. These findings indicate that serum AST/ALT ratio is positively associated with an increased mortality risk in all-cause, all-cancer, and head and neck cancer.

The present study aimed to explore how pre-service teacher’s individual regulatory focus orientation, currently emerging as an interesting learner variable for language learning, could influence their Englishspeaking abilities. English teaching demonstration videos of 67 pre-service teachers were analyzed in terms of pronunciation, accuracy, and fluency. The regulatory focus orientations of participants were evaluated using a questionnaire. The results of data analysis, using multiple regression analysis, indicated that promotion-focus orientation was a significant positive predictor for pronunciation, fluency (words per minute, ratio of dysfluency), and accuracy (lexical errors, ratio of error-free AS-units). On the other hand, prevention-focus orientation did not emerge as a statistically significant factor affecting accuracy. However, it was observed to have a negative influence on both pronunciation and fluency. In light of the research findings that highlight the favorable impact of a promotion-focus orientation, suggestions were made for future teacher training programs aimed at enhancing the English proficiency of pre-service teachers.

This study investigated associations between healthy dietary practices and the odds of prediabetes among Korean adolescents. The data of 1,624 adolescents aged 12 to 18 who participated in the 2017-2021 Korea National Health and Nutrition Examination Survey were analyzed. Healthy dietary practices were defined according to Health Plan 2030 criteria, and prediabetes was defined as a fasting blood glucose level of 100-125 mg/dL. After controlling for confounders, adjusting odds ratios and 95% confidence intervals (CIs) for prediabetes were determined for different healthy dietary practices using multivariable logistic regression analysis. Compared with adolescents who engaged in healthy dietary practices, those who did not had a 1.63-fold (95% CI: 1.12-2.37) higher odds of prediabetes. In addition, adolescents who did not consume ≥500 g of fruit and vegetables daily and those who refrained from reading nutritional fact labels, which are both subindicators of healthy dietary practices, had a 1.66 (95% CI: 1.05-2.62) and 1.58-fold (95% CI: 1.06-2.37) higher odds of prediabetes, respectively, than those who did. Increasing the proportion of adolescents engaging in healthy dietary practices, such as consuming ≥500 g of fruit and vegetables daily and reading nutritional fact labels when selecting food, is imperative.

This study aimed to determine the association between household types and healthy dietary practices among Korean adults. A cross-sectional analysis was performed using nationwide data on 23,488 participants from the 2017-2021 Korea National Health and Nutrition Examination Survey (KNHANES). Based on self-reported data, the participant household types were classified into single- and multi-person households. The adjusted odds ratios (AORs) and 95% confidence intervals (CIs) for healthy dietary practices according to household types were calculated by applying multivariable logistic regression analysis after adjusting for confounders. Of total, 11.21% and 88.79% were single- and multi-person households, respectively. Compared with individuals living in multi-person households, those in single-person households had lower odds of adhering to healthy dietary practices (AOR: 0.88, 95% CI: 0.79-0.98) and consuming adequate saturated fatty acids (<7% of energy) (AOR: 0.78, 95% CI: 0.69-0.88). In addition, men and individuals aged 65 years living in single-person households exhibited lower odds of consuming adequate saturated fatty acids and 500 g of fruit and vegetables per day than those in multi-person households. Single-person households often find it a challenge to practice a healthy diet. Hence, nutritional policies and educational support that help individuals living alone consume healthier diets are warranted.

The purpose of this study was to investigate the association between household economic changes by COVID-19 and dietary habits in Korean adolescents. The study analyzed data from the 17th Korea Youth Risk Behavior Survey in 2021. A total of 54,848 middle and high school students, 28,401 males and 26,447 females, participated in this study. COVID-19 lead to deterioration of household economy in the lower level of household economic status (p<0.001). The deterioration of household economic status by COVID-19 was associated with dietary habits such as lower breakfast intake, and higher fast food, soda drinks, and sweet drinks consumption (p<0.001). Logistic regression analysis showed that deterioration of household economic status was significantly decreased in frequency of breakfast intake (OR: 0.73, 95% CI: 0.67~0.80). The deterioration of household economic status by COVID-19 was also significantly associated with increased frequency of fast food (OR: 1.28, 95% CI: 1.16~1.41), soda drinks (OR: 1.42, 95% CI: 1.30~1.56) and sweet drinks (OR: 1.35, 95% CI: 1.24~1.46) consumption (p<0.001). In conclusion, it was confirmed that the change in household economy caused by COVID-19 was associated with dietary habits in adolescents. As the household economy deteriorated, there was an increase in undesirable dietary habits including skipping breakfast and fast food consumption.

We performed a study to examine the association between diet quality and nonalcoholic fatty liver disease (NAFLD). Our study included 3,586 women aged 40-64 years who participated in the sixth Korea National Health and Nutrition Examination Survey. The study subjects were classified into the NAFLD group (n=816) and the normal group (n=2,770) using the hepatic steatosis index. The anthropometric indices, blood profiles, and dietary intake data of the subjects were obtained. The waist circumference, body mass index, and the serum levels of triglycerides, fasting blood sugar, HbA1c, and systolic and diastolic blood pressures were higher in the NAFLD compared to the normal groups (p<0.001, respectively). The intakes of protein (g/kg body weight, p<0.001), potassium (p<0.001), and vitamin A (p=0.006) were significantly lower in the NAFLD group. It was observed that the higher the total Korean Healthy Eating Index score, the lower the risk of NAFLD. A reverse relationship was shown between the NAFLD risk and the intakes of total fruits, total vegetables, vegetables excluding Kimchi and pickled vegetables, meat, fish, eggs and beans. Therefore, it is recommended that middleaged women in Korea increase their intakes of fruits, vegetables, and foods high in protein for the proper management of NAFLD.

Ensuring the safe arrival of delivery cargo at its intended destination is of utmost importance. Truck drivers play a crucial role in guaranteeing the secure delivery of cargo without any mishaps. However, there are various factors that may lead to delayed arrival of trucks at their destination, such as late departures or prolonged loading operations. The timely departure of cargo transportation is contingent upon several variables, including the driver's experience, cargo volume, and loading time. If the transportation commencement is delayed, it may increase the risk of accidents due to an elevated operating speed. Consequently, we conducted a study to investigate the correlation between cargo loading time, cargo volume, driving experience, and the likelihood of accidents. Our findings indicate that both cargo volume and driver experience can impact the likelihood of vehicle accidents. Furthermore, all factors can have an interactive effect on the occurrence of accidents. However, extending the loading time may mitigate the impact on the likelihood of accidents.

In this study, we aimed to explore whether eating alone is associated with mental health conditions in Korean adolescents. The data of 2,012 Korean adolescents aged 12-18 years were obtained from the Korea National Health and Nutrition Examination Survey 2015–2019. Participants were classified into three groups based on the frequency of eating alone: none (all meals with others); 1 meal/day alone; and 2 meals/day alone. Mental health conditions were assessed based on stress recognition, depressive symptoms, and suicidal ideation. Multivariable logistic regressions were employed to calculate the adjusted odds ratios (AORs) and 95% confidence intervals (CIs) of poor mental health conditions according to the frequency of eating alone. Adolescents who ate 2 meals/day alone had higher odds of stress recognition (AOR: 2.65, 95% CI: 1.94- 3.63), depressive symptoms (AOR: 2.55, 95% CI: 1.47-4.42), and suicidal ideation (AOR: 2.53, 95% CI: 1.05-6.08) than those who ate all their meals with others. In addition, having breakfast or dinner alone increased the odds of stress recognition. Considering the continuous increase in the social phenomenon of eating alone, nutritional educations are needed to develop adolescents' ability to choose more nutritionally balanced and healthy meals when eating alone.

본 연구는 건강에 위협이 되는 고요산혈증과 대사증후군의 관련성을 살펴보고 고요산혈증이 신 체에 미치는 영향을 분석하고자 한다. 분석 자료는 질병관리청에서 시행한 국민건강영양조사 제8기 2차 (2020년도) 자료를 내려받아 사용하였으며 본 연구에서는 만 19세 이상 성인을 대상으로 요산의 검사를 시행한 대상자 중 남자 2,320명, 여자 2,893명을 최종 분석하였다. 자료의 분석은 수집된 일반적 특성과 고 요산혈증에 따른 차이값은 Chi-square 검정과 t 검증을 사용하였으며 대사증후군의 하부요인과 eGFR 상 승의 위험도는 회귀분석으로 분석하였고 각 변수와의 상관관계를 확인하기 위하여 Pearson correlation을 사용하였다. 본 연구를 통하여 고요산혈증이 대사증후군과 유의미한 관계가 있으며 이를 통하여 대사증후 군이 콩팥질환을 포함한 혈관 질환으로 악화하지 않도록 선제 관리가 필요하다는 것을 알게 되었다. 따라 서 본 연구를 통하여 환자의 연령에 맞는 건강프로그램을 개발할 것을 제안한다.

This study investigated the association between dietary intake and 10-year risk for CHD predicted from Framingham risk score in Korean adults using the Korea National Health and Nutrition Examination Survey 2019-2020. Eight thousand subjects (3,382 men and 4,618 women) aged 30 years or older were classified into three groups according to the 10-year CHD risk (%). The sociodemographics, anthropometrics indices, blood profiles, and dietary intake were collected. After adjusting for confounding variables, the mean adequacy ratio (MAR) decreased for both men and women as the disease risk increased. The high–risk group was below the MAR criteria, indicating that the overall quality of the meal was not good. The highest consumers of legumes (OR 0.56, 95% CI 0.37-0.84), fruits (OR 0.67, 95% CI 0.48-0.93), and fish (OR 0.60, 95% CI 0.42-0.87) had a 44%, 33%, and 40% lower 10-year CHD risk than lowest consumers in men, respectively. In women, there is no significant relationship between food groups and disease risk. Therefore, improving lifestyle habits such as weight control, increased activity, and adequate food intake, especially legumes, fruits, and fish rich in antioxidant nutrients and bioactive substances, appears to have a potential association with preventing coronary heart disease in Korean adults.

Background: The purpose of this study was to determine the bidirectional association between burning mouth syndrome (BMS) and depression disorders. Methods: A total of 854 pairs of BMS and 58 999 pairs of depression disorders matched 1:1 for age and sex were analyzed using conditional logistic regression models, which were adjusted for potential confounding factors. Results: Bidirectional analysis found that BMS was associated with depression disorders (odds ratio=4.64, P < 0.001) and depression disorders was also significantly associated with BMS (odds ratio=2.97, P < 0.001). Conclusion: These findings indicate a significant bidirectional association between BMS and depression disorders. The odds ratios suggest that BMS is a stronger predictor for incidence of depression disorders than depression disorders predicting incidence of BMS. Given this retrospective cohort design, the mechanisms underlying the association between BMS and depression disorders are not directly analyzed. Therefore, further investigation are needed to analyze the causality between BMS and depression disorders.

목적 : 본 연구는 노인장기요양등급 대상자들의 작업치료 이용 여부와 인지 기능과의 연관성을 분석하기 위해 수행되었다. 연구방법 : 국민건강보험공단에서 제공하는 2015년 노인코호트 데이터베이스에서 60세 이상 노인 데이터 를 추출하여 분석하였다. 본 연구의 종속변수는 노인장기요양보험 신청 시 평가되는 인지 기능 9개의 항 목이며, 독립변수는 작업치료 수가 정보를 기반으로 작업치료 서비스 수행 그룹과 미수행 그룹으로 나눈 작업치료 서비스 이용 여부이다. 작업치료 서비스 이용 여부와 인지 기능 간의 연관성을 분석하기 위해 다중선형 회귀분석을 적용하였으며, 공변량은 인구통계학적 및 임상학적 특성을 사용하였다. 결과 : 분석에 사용된 29,436명 중에서 작업치료 서비스를 이용한 그룹은 3,796명(12.90%)이었으며 대 부분의 분석 샘플은 여자(n = 2,465, 4.94%)로 구성되었다. 이들의 평균 연령은 80.38 ± 5.19세였 다. 지역사회에 거주하며 작업치료 서비스를 이용한 대상자는 1,925명(50.71%)이었으며 장애인등급을 가진 대상자는 281명(7.40%)이었다. 작업치료 서비스 이용과 인지 기능은 긍정적인 연관성이 도출되었 다(β = 0.17, 95% Confidence Internal[CI] = 0.10 to 0.24). 결론 : 본 연구는 작업치료 서비스 이용이 인지 기능의 긍정적인 결과와 연관성을 제시하였으며 작업치료 서비스가 인지기능의 유지 및 증진과 연관성이 있다는 것을 의미한다. 추후 노인장기요양보험제도 개정 시 노인장기요양등급 대상자들의 인지 재활을 목적으로 작업치료 서비스의 필요성을 제시하기 위해 본 연구 결과가 활용되길 기대한다.

목적 : 본 연구는 소아·청소년의 나트륨 섭취와 굴절 이상 사이의 연관성을 조사하였다. 방법 : 본 연구에서는 2016년 국민건강영양조사에 5~18세 소아·청소년 968명의 데이터를 사용하였다. 나트 륨 섭취량은 24시간 식단 회상에서 식품 항목에 대한 데이터로 측정하였다. 굴절 이상은 우안의 등가구면 굴절력 (SE)을 사용하였다. 잠재적인 교란 요인을 조정한 후 로지스틱 회귀 분석을 사용하여 나트륨 섭취와 굴절 이상 간 의 연관성을 분석하였다. 결과 : 나트륨 섭취량과 굴절 이상은 상관관계가 있었고(p<0.001), 나트륨 섭취가 높을수록 굴절 이상도 함께 높은 것으로 나타났다(p<0.001). 특히 나트륨 섭취량은 근시에서 유의하게 높았다. 잠재적인 교란 요인을 보정한 후 다변량 로지스틱 회귀 분석에서 높은 나트륨 섭취가 근시 위험 증가와 유의하게 관련이 있는 것으로 나타났다 (OR 1.62; 95% CI 1.12-2.33, p=0.010). 결론 : 국내 소아·청소년의 나트륨 섭취와 굴절 이상 사이에 유의한 연관성이 있는 것으로 나타났다. 또한, 높 은 나트륨 섭취량은 근시와 관련이 있는 것으로 나타났다.

본 연구는 사주명리학의 십성과 MBTI 심리기능과의 연관성 연구로서 질적 연구이다. 본 연구에서는 사주의 강한 십성과 MBTI 심리기능과의 연관성을 실제 사주 분석과 MBTI 검사를 통해 비교했다. 또한 사주의 강한 십성과 MBTI 심리기능을 대상자 별로 분석해 보는 것도 필요하다고 본다. 이러한 필요성에 따라 본 연구의 목적은 두 이론의 상호보완점을 찾고, 명리의 심리적 설명이 용이하도록 돕기 위함이다. MBTI는 자신의 성격을 인지하게 해서 인간관계의 갈등과 문제 해결에 도움을 주고자 하는 심리 검사지이다. 사주명리의 십성 역시 내담자의 성격과 심리를 이해할 수 있도록 도와주는 이론이다. 사주명리학에서 십성은 일간(태어난 날의 천간)을 기준으로 음양오행의 생극(生剋) 관계를 따져 붙여진 이름으로 일간(日干)과 다른 간지(干支)와의 관계를 나타내는 용어이다. 십성은 정인, 편인, 식신, 상관, 정재, 편재, 정관, 편관, 비견, 겁재인데, 본 연구에서는 비견과 겁재를 제외했다. MBTI의 심리기능은 유형의 중간 두 글자로, 선호되는 인식기능(SN)과 판단기능(TF)으로 가장 의식적이고 잘 발달 된 기능이다. 연구 결과 사주에서 일간에 가장 강력하게 작용하는 인성, 재성, 관살, 식상과 MBTI의 감각(sensing), 직관(intuition), 사고(thinking), 감정(feeling ) 기능 중에 한 개 이상 연관성이 있음을 알 수 있었다.

현재 국내 반려동물 보유가구 수가 급증하고 반려산업구조 규모 역시 급성장하고 있다. 반려가구가 늘어나면서 키우던 동물을 유기하거나, 관리 부실로 사고가 발생하는 등 여러 문제들이 발생하고 있다. 연구를 진행하면서 필요한 자료를 찾는 것은 논문사이트, 뉴스 기사, 공공기관 및 시민단체 등을 이용하였다. 반려동물을 학대하는 사람들은 강력범죄를 일으킬 가능성이 존재하는 것으로 확인되었다. 미국 보스턴에 위치한 노스이스턴 대학의 연구진은 남성 범죄자의 30%이상 , 아동성추행범의 30%이상, 가정폭력범의 36%이상, 살인범의 46%이상이 강력범죄 이전 동물학대 경험이 있다는 내용의 연구결과를 발표했 다. 따라서 동물보호법상 동물학대의 기준과 정의를 명확하게 규명하고, 강력범죄의 가능 성을 사전에 차단할 필요가 있을 것으로 보인다.

이 논문은 대중음악의 리듬에 큰 영향을 끼친 펑크 리듬과 아프로 큐반 리듬을 구조적 관점으로 분석하여 그 연관성과 응용과정을 연구하였다. 펑크 리듬은 1965년 제임스 브라운과 그의 밴드들 에 의해 발생 및 발전되었으며, 아프리카에서 온 흑인들에게 영향을 받은 라틴 음악의 리듬을 미 국 대중음악에 적용하고 융합하여 만들어 낸 리듬이다. 대중음악 리듬에 큰 영향을 끼치고 있는 펑크 리듬의 발생과 발전에 대해 체계적으로 분석하여, 리듬의 응용과 융합 방법의 원리를 제시하 는 것이 이 연구의 목적이다. 연구 방법은 대중음악 리듬의 혁명으로 불리는 1960년대 중반 이후 의 제임스 브라운의 앨범에 정착된 펑크 리듬과 아프로 큐반 음악의 리듬 구조를 비교하여 연관성 을 분석하였고, 대중음악 리듬으로 응용 및 적용하는 과정에 대해 추론하였다. 연구 결과 아프로 큐반의 대표적인 리듬들과 대중음악에서 사용되는 펑크의 중심 리듬에서 그 연관성을 찾을 수 있 었으며, 특히 드럼의 킥 패턴과 킥과 스네어 드럼 조합의 패턴을 응용하여 대중음악 리듬으로 만 들었다는 것을 도출해 내었다. 마지막으로 이 방법을 활용하여 좀 더 많은 전통 리듬들을 응용하 여 새로운 대중음악의 리듬을 응용하고 만들어내는 가능성을 제시하였다.

The association between the COMT rs4680 (G>A, Val-158-Met) polymorphism and the risk of fibromyalgia has been investigated in previous studies, but the results are controversial. Therefore, a meta-analysis has been performed to confirm the association between COMT rs4680 (G>A, Val-158-Met) polymorphism and the risk of fibromyalgia in this study. Our study includes eleven case-control studies with 2,909 individuals comprised of 1,365 fibromyalgia patients and 1,544 control subjects. The regression analysis was performed using the random effects model or the fixed effects model and OR with the corresponding 95 % CI was calculated for the allele, recessive, dominant, over-dominant, co-dominant 1, and co-dominant 2 model. No statistical significant associations were observed between COMT rs4680 (G>A, Val-158-Met) polymorphism and risk of fibromyalgia in allele model (P-value = 1.00), recessive model (P-value = 1.00), dominant model (P-value = 0.54), co-dominant 1 model (P-value = 1.00) and co-dominant 2 model (P-value = 1.00). In conclusion, our meta-analysis showed that the COMT rs4680(G>A, Val-158-Met) polymorphism might not be genetic risk factor for the fibromyalgia.

A sediment control dam is an artificial structure built to prolong sedimentation in the main dam by reducing the inflow of suspended solids. These dams can affect changes in dissolved organic matter (DOM) in the water body by changing the river flow regime. The main DOM component for Yeongju Dam sediment control of the Naeseongcheon River was analyzed through 3D excitation-emission matrix (EEM) and parallel factor (PARAFAC) analyses. As a result, four humic-like components (C1~C3, C5), and three proteins, tryptophan-like components (C2, C6~C7) were detected. Among DOM components, humic-like components (autochthonous: C1, allochthonous: C2~C3) were found to be dominant during the sampling period. The total amount of DOM components and the composition ratio of each component did not show a difference for each depth according to the amount of available light (100%, 12%, and 1%). Throughout the study period, the allochthonous organic matter was continuously decomposing and converting into autochthonous organic matter; the DOM indices (fluorescence index, humification index, and freshness index) indicated the dominance of autochthonous organic matter in the river. Considering the relative abundance of cyanobacteria and that the number of bacteria cells and rotifers increased as autochthonous organic matter increased, it was suggested that the algal bloom and consequent activation of the microbial food web was affected by the composition of DOM in the water body. Research on DOM characteristics is important not only for water quality management but also for understanding the cycling of matter through microbial food web activity.

This study investigates the relationship between vitamin C intake and obesity prevalence among Korean adults. Based on data of the Korean National Health and Nutrition Examination Survey (2016-2017), a total of 1,356 participants were included in this analysis. Increasing the dietary vitamin C intake resulted in a significantly decreased occurrence of BMI obesity prevalence (p for trend=0.0194) and WC obesity prevalence (p for trend=0.0452). Moreover, increasing the dietary vitamin C intake of Korean adults having a high frequency of eating breakfast resulted in significantly decreased BMI obesity prevalence (p for trend=0.0406) and WC obesity prevalence (p for trend=0.0432). Among the Korean adults who ate out frequently, decreased BMI obesity prevalence was determined with increased intakes of dietary vitamin C (p for trend=0.0193) and total vitamin C (food and dietary supplements) (p for trend=0.0429), whereas significant decrease in WC obesity prevalence was observed with increased dietary vitamin C intake (p for trend=0.0484). Our results provide conclusive evidence that consumption of dietary vitamin C is associated with obesity prevalence in Korean adults, according to their habits of eating breakfast and frequency of eating out.