• Journal of Mushroom
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• v.21 no.1
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• pp.8-14
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• 2023

This study aimed to verify the whitening effect of Cordyceps militaris, which is distributed in several countries worldwide, including Korea, Japan, and China, and has various medical effects. To screen the efficacy of C. militaris, the inhibitory activity of tyrosinase, which was 66% at a concentration of 1 mg/mL, was measured. Thereafter, the survival rate of melanoma cells was measured, and cell experiments were conducted at a concentration of 90% or more in which C. militaris was not toxic to cells. After measuring the inhibitory effect of TRP-1, TRP-2, tyrosinase protein, and mRNA expression, which are factors influencing melanin synthesis, C. militaris was found to decrease in all factors, with an expression level that was significantly lower compared to quercetin. This confirmed that C. militaris stimulated with LED has excellent whitening activity and can be used as a functional whitening cosmetics material.

• Journal of Agricultural Extension & Community Development
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• v.30 no.4
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• pp.187-197
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• 2023

The study aims to identify factors related to landscape structure and socioeconomic characteristics that influence adults' physical activity and health. The study analyzes data from 148,643 respondents from the Korea Community Health Survey conducted in 2021. The study measures various factors, including the frequency of physical activity, stress, depression, and landscape metrics of forest patches. Hierarchical multiple regression analysis was used, controlling for socio-demographic characteristics. Larger forest patches and more irregular shapes are associated with higher levels of physical activity among adults. The percentage and area of the forest patch are associated with fewer mental health complaints. Configuration-related landscape metrics such as shape or arrangement of the forest patch did not show a significant association with physical activity. Overall, the study provides insights into how specific characteristics of forest patches in urban areas may influence physical activity and mental health among adults. It emphasizes the importance of green spaces and their potential positive effects on both physical and mental well-being.

• Journal of the Korean Society of Marine Environment & Safety
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• v.29 no.7
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• pp.915-929
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• 2023

Improvements in people's quality of life, diversification of leisure activities, and changes in population structure have led to an increase in the demand for tourism and an expansion of the diversification of tourism activities. In particular, for coastal cities where land and marine tourism elements coexist, various factors influence their tourism demands. Tourism requires the construction of infrastructure and content development according to the demand at the tourist destination. This study aims to improve the prediction accuracy and explore influencing factors through time series analysis of tourism scale using agent-based data. Basic local governments in the Busan area were examined, and the data used were the number of tourists and the amount of tourism consumption on a monthly basis. The univariate time series analysis, which is a deterministic model, was used along with the SARIMAX analysis to identify the influencing factor. The tourism consumption propensity, focusing on the consumption amount according to business types and the amount of mentions on SNS, was set as the influencing factor. The difference in accuracy (RMSE standard) between the time series models that did and did not consider COVID-19 was found to be very wide, ranging from 1.8 times to 32.7 times by region. Additionally, considering the influencing factor, the tourism consumption business type and SNS trends were found to significantly impact the number of tourists and the amount of tourism consumption. Therefore, to predict future demand, external influences as well as the tourists' consumption tendencies and interests in terms of local tourism must be considered. This study aimed to predict future tourism demand in a coastal city such as Busan and identify factors affecting tourism scale, thereby contributing to policy decision-making to prepare tourism demand in consideration of government tourism policies and tourism trends.

• Journal of the Korean Society of School Health
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• v.9 no.1
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• pp.69-75
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• 1996

The aim of this study is to find out the correlations between heaith behaviours of young people and the relationships with social factors, which can be helpful for the development of health promotion programmes for youths. The main socializing arenas influencing children's development of health and health behaviour are school, peers and parents. In this study, the selected social factors are based on these arenas. And the following seven health-related behaviours were selected: smoking, drinking alcohol, drinking coffee, irregularity of taking main meals, regular exercise, brushing teeth, and use of medicine for nourishment or restoratives. These health behaviours categorized into two groups; health- promotiong and health-damaging behaviours. The results were summarized as follows; Significant positive correlations were found between health damaging behaviours-drinking alcohol, coffee, smoking, irregularity of main meals, drinking alcohol. But, No consistently significant correlations were revealed among health promoting behaviours and between health promoting and health damaging behaviours. If total group were devided into four groups by gender and grade, these correlations were a little weak. Although such division, the correlations among health damaging behaviours were still significant. The result is also found that health behavious and various social factors were strongly correlated. Particulary, health damaging behaviours showed a consistent correlation with social factors. This consiatensy was simillar to the figure of other contries in Europe. In conclusion, a more comprehensive explanation on health behaviour bacame possible if the analysis on the correlations were made by dividing health behavious into "health-promotion" and "health- damaging". And the health promotion programmes can be more effective when they focus on the correlation of health behavious and inter-relationships between health behavious and various social factors, rahter than focus on individual behavious.

• Smart Media Journal
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• v.11 no.3
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• pp.62-73
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• 2022

Researches on the prediction of domestic apartment sales price have been continuously conducted, but it is not easy to accurately predict apartment prices because various characteristics are compounded. Prior to predicting apartment sales price, the analysis of major factors, influencing on sale prices, is of paramount importance to improve the accuracy of sales price. Therefore, this study aims to analyze what are the factors that affect the apartment sales price in Gwangju, which is currently showing a steady increase rate. With 6 years of Gwangju apartment transaction price and various social factor data, several maching learning techniques such as multiple regression analysis, random forest, and deep artificial neural network algorithms are applied to identify major factors in each model. The performances of each model are compared with RMSE (Root Mean Squared Error), MAE (Mean Absolute Error) and R² (coefficient of determination). The experiment shows that several factors such as 'contract year', 'applicable area', 'certificate of deposit', 'mortgage rate', 'leading index', 'producer price index', 'coincident composite index' are analyzed as main factors, affecting the sales price.

• Radiation Oncology Journal
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• v.23 no.4
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• pp.201-210
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• 2005

Purpose: Quality of life in patients with cancer may be influenced by various kinds of variables, such as personal, environmental, and medical factors. The purpose of this study was to identity the influencing factors on the quality of life in patients with cancer. Materials and Methods: One hundred and forty seven patients, who were taking medical therapy or following up after surgery for cervix cancer, participated in the present study. Quality of life, medical variables (cancer stage, types of treatment, follow-up status, and symptom distress), and psychosocial variables (mood disturbance, orientation to life, and social support) were measured. The obtained data were computed using multiple regression analyses. Results: The medical-and-psychosocial variables explained 63.3% of the total variance in the quality of life ($R^2=0.633$ F:16.959, p=.000). Cancer stage, symptom distress, mood disturbance, social support(family), and optimistic orientation to life were significant factors influencing on the quality of life in patients with cervix cancer. Conclusion: An integrative care program which includes medical - and - psychosocial characteristics of patients is essential to improve quality of life in patients with cervix cancer.

• English Language & Literature Teaching
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• v.9 no.2
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• pp.213-241
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• 2003

As an attempt to characterize the English test section of CSAT (College Scholastic Ability Test) and to get some suggestions, this study raised the research questions, as 'What are the main factors that affect students' English test scores in CSAT, and how big influences do they have?' It has been hypothesized that among main factors are the L1 competence, represented by the Korean test scores in CSAT, background knowledge or intelligence, represented by the "total" scores in CSAT, and the two types of L2 knowledge (vocabulary and grammar on one hand and prosody m the other hand), measured by the test devised specially for this study. The individual effect of the L2 vocabulary and grammar (one kind of L2 knowledge) was 70%, that of background knowledge or intelligence 61%, that of the L1 competence 50%, and that of the L2 prosody knowledge (the other kind of L2 knowledge) 32%. According to the stepwise regression, the whole effect of these four factors was 74%. The findings suggest that first, although CSAT is based on the top-down model of comprehension, the bottom-up model of learning should be more emphasized in our English class. Also, since background knowledge or intelligence is the second most influential factor, the top-down model of learning that helps students learn to understand by activating their various schemata must also be very effective.

• Journal of the Korean Society for Aviation and Aeronautics
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• v.19 no.1
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• pp.66-73
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• 2011

According to U.S. NTSB, from 1989 to 1992, Situation Awareness(SA) was a major factor causing 80% of all aircraft accidents in scheduled airlines. Therefore, the prevention of accidents through effective training in SA became a pivot in aviation safety. Furthermore, during the past 10 years, since all helicopter accidents in Korea were caused by the factors related to SA, an appropriate countermeasure has been required. This study, which uses survey data, examines various factors related to SA that could affect helicopter pilots. Common characteristics of situation awareness factors are that the result from the independent variables which are flight time, duty period and age of a first officer is statistically significant with the result from the independent variables of an instructor pilot's. However, only experience is statistically significant independent variable for factors influencing decision making in emergency situations, but anxiety, expectation and comprehension are not significant.

• Asian Pacific Journal of Cancer Prevention
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• v.17 no.11
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• pp.4831-4836
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• 2016

The study aimed to find out to what degree suicidal thoughts and associated factors affect the suicide risk of advanced cancer patients. The frequency of suicidal thoughts among patients with cancer, especially in the advanced stages, is about 3 times greater than the adult average in South Korea. We recruited 457 participants with four types of cancers (colon, breast, cervical, and lung) using stratified sampling. Data collection was carried out through one-on-one interviews by trained nurses using a structured questionnaire. Advanced cancer patients with high, vs. low, levels of anxiety and pain had a higher suicide risk. In contrast, having one's spouse as the primary care provider was associated with a low suicide risk. Overall, the three factors of anxiety, pain, and the primary caregiver being one's spouse explained 17.2% of the variance in suicide risk. In conclusion, we derived influencing factors of suicide risk using a sample of patients with various types of advanced cancer. The results provide systematic baseline data for preparing nurse-led interventions to prevent suicidal thoughts and suicide attempts among advanced cancer patients.

• Research in Community and Public Health Nursing
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• v.23 no.1
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• pp.63-70
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• 2012

Purpose: The purpose of this study was to identify factors influencing 6th graders' alcohol drinking. Methods: Data were collected by questionnaires from 524 6th-graders in G City. The data were analyzed using SAS 9.1.3 programme. Results: Of the children, 63.7% had no education about drinking, implying that drinking prevention education is not done properly in elementary schools. In addition, 70.6% of the children experienced drinking. Among those who had drinking experience, 24.9% experienced the first drinking before entrance into elementary school and this was the highest percentage. Logistic regression analysis showed that the predictors are religion, family type, mother's drinking frequency, and alcohol attitude. Conclusion: The results of this study suggest that complementing home environment and parenting education would be effective for reducing children's drinking. Also, it is recommended that drinking prevention programs for children should be developed in consideration of various factors affecting children's drinking including the factors identified in the present study, and the effectiveness of those programs should be assessed.