• Journal of Korea Entertainment Industry Association
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• v.13 no.8
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• pp.345-356
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• 2019

This study investigated the influence of media sports contact motivation on direct sports participation in order to induce direct sports participation through media sports. In this regard, this study aimed to provide the basic data of media sports and sports participation by studying the effects of consumer's exercise commitment and exercise duration. From April 1, 2019 to April 31, 2019, a survey was conducted on 300 males and females in G and J provinces. To determine the purpose of the study, IBM's SPSS Ver. 21.0 and AMOS Ver. The analysis was performed using a statistical program of 21.0. The results of the study are as follows. First, media sport contact motivation was found to have an effect on exercise commitment. In addition, media sports contact motivation was found to have an effect on exercise persistence and sports participation. In addition, exercise commitment was found to have an effect on exercise duration, and exercise duration was found to affect sports participation. Second, in terms of media sports contact motivation and sports participation, exercise persistence had a mediating effect. In addition, it was found that exercise commitment had a mediating effect on the relationship between media sports contact motivation and exercise persistence, and exercise persistence had a mediating effect on the relationship between exercise commitment and sports participation. Third, media sports contact motivation did not have a direct effect on sports participation. Also, exercise immersion has no mediating effect in the relationship between media sports contact motivation and sports participation. However, in terms of media sports contact motivation and sports participation, exercise commitment and exercise persistence showed a double mediating effect.

• 한국노년학
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• v.31 no.4
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• pp.1119-1134
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• 2011

The purpose of this study is firstly to understand socio-demographic and health characteristics and economic characteristics of elderly single households aged over 60 and secondly to examine the relations between these factors and level of life satisfaction, especially differentiated relations by income level. We used the data drawn from third KREIS (Korean Retirement and Income Study) surveyed by National Pension Research Institute. The statistical methods used for the analyses were t-test, X², multiple regression analysis. For the whole sample, the results showed that the life satisfaction is positively related to higher income, better physical and emotional health status and having a religion. When we conducted the regression on two groups, the religion and income level were no longer significant factors. On the other hand, being a woman and enjoying good health contributed to life satisfaction for lower-income group while having a job and enjoying good health played a positive role in life satisfaction for higher-income group.

• 한국노년학
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• v.31 no.3
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• pp.641-652
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• 2011

The purpose of this study was to investigate the ability of visual-motor integration (VMI) in elderly patient with diabetes mellitus(DM). Male elderly (from 65 to 70 years old) with DM and non-DM disease were participated in this study. Participants were divided into three group (n=30 in each group): the control group, non-DM group, and DM group. Data were collected through VMI-3R questionnaires and interviews. Statistical differences among groups were determined by one-way ANOVA followed by Duncan Post-hoc test and results were expressed the mean ± S.D. or percentage (%). The present results showed that the score of both VMI 24 and VMI 50 in DM group were statistically lower than both the control and Non-DM groups. Also, the lower rate of correct and higher rate of error in VMI-3R was observed in DM group compared to both the control and Non-DM groups. The item analysis of VMI-3R revealed that the most higher rate of error was observed in item 24 in all groups. Based on these results, this study suggests that DM might aggravate the function of visual-motor integration in male elderly.

• Journal of Industrial Convergence
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• v.21 no.10
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• pp.29-35
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• 2023

This study aims to find out how the nutrition and eating habit education that Korean adolescents receive at school actually affects and affects their dietary culture. he subject and method of this study was a secondary analysis study using the data from the 18th Korea Youth Risk Behavior Survey(2022). Statistical significance was confirmed using the SPSS program as the frequency of breakfast, reason for skipping breakfast, fruit, high-caffeinated beverage, sweet beverage, fast food, vegetable, milk, water, and late-night snack intake frequency as variables. There was a significant difference in breakfast, fast food, and late-night snacks between the group that received nutrition and eating habits education at school and the group that did not(p<.001). Regarding breakfast consumption, the group that received education showed a higher proportion of students eating breakfast for seven days or more, whereas the group that did not receive education showed a higher proportion of students who did not eat breakfast at all. The group that did not receive education showed a higher proportion of students who did not drink milk, and a higher proportion of students who drank less than one cup of water per day. This study can serve as a foundation for further studies to improve nutritional and dietary education, breakfast consumption, and beverage intake in schools. It was hoped that this study will contribute to developing more effective nutritional and dietary education strategies in schools.

• The Korean Journal of Applied Statistics
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• v.36 no.5
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• pp.447-455
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• 2023

COVID-19 is an emerging infectious disease that is hard to predict in terms of fatality rate, treatments, and the timing of its end. World is developing treatments and vaccines for COVID-19. Several treatments and vaccines currently have emergency use authorization, but the treatments are only allowed for critically ill patients with COVID-19. Therefore, the aim of this study is to analyze the confirmed cases of COVID-19, including mortality and testing, in OECD countries and to assess the effect of vaccination on mortality. Looking at the confirmed cases, mortality, and vaccination rates of COVID-19, the number of confirmed cases was lower than previously reported cases after full vaccination. In early 2022, with Omicron, the confirmed cases increased sharply, while mortality dropped, and the mortality showed a gentle curve as the cumulative fully vaccinated exceeded 50%. This indicates that COVID-19 vaccines have an effect on reducing mortality. However, the duration of effectiveness of vaccines was considerably short, which decreased the initial inoculation effect and increased the monthly mortality. As this study was carried out during the COVID-19 pandemic, there was not enough data to analyze comprehensively. However, it is meaningful to compare and analyze the impact of COVID-19 by country.

• Resources Recycling
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• v.32 no.6
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• pp.34-44
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• 2023

In this work, column flotation using factorial design was performed for recovering high-grade molybdenite concentrate. First, the flotation concentrate from Samyang Mining Plant was regrinded to a mean size of 165, 116, 46.7, and 38.4 ㎛ for an increase of the liberation degree. Tests were carried out for various variables affecting column flotation, and then the concentrates with molybdenite grade and recovery of 98.3 % and 95.28 % were obtained, respectively. Also, regression was performed using the statistical analysis program (SPSS 25) with the factorial design and experimental data on particle size, flow wash-water velocity and depressant that affect high grade. From the results, a model equation was derived to predict the molybdenite grade (MG) and recovery (MR) with the relationship between column flotation variables. Factors such as depressant concentration + wash-water velocity and particle size + depressant concentration + wash-water velocity were smaller than the significance level (0.05) and had a significant effect on the dependent variable, grade, and in the recovery model, only particle size and wash-water velocity factors affected the dependent variable, recovery.

• Proceedings of the Plant Resources Society of Korea Conference
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• 2021.04a
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• pp.46-46
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• 2021

The first purpose of this study was to evaluate the scavenging capacity (SC) of DPPH and ABTS free radicals for ethanol extract (STR-E) and its active fractions from Sophora tonkinensis root (STR). Four different fractions from STR-E were prepared by using different types of solvents such as chloroform (STR-E-C), ethyl acetate (STR-E-EA), n-butanol (STR-E-B), and water (STR-E-W). STR-E-C showed the highest value of total phenolic content, while STR-E showed the highest value of total flavonoid and terpenoid content. In STR-E and its four fractions, STR-E-EA showed the strongest SC with the lowest SC50 values of the DPPH radicals and ABTS radicals. The second purpose of this study was to evaluate anti-inflammatory activity in the lipopolysaccharide (LPS)-induced RAW 264.7 macrophages treated with STR-E, STR-E-C, and STR-E-EA, respectively. No cytotoxic effect to RAW 264.7 cells was observed at 20 ~ 25 ㎍/ml of STR-E, 10 ㎍/ml of STR-E-C, and 5 ㎍/ml of the STR-E-EA, presenting cell viability values close to that of the untreated control (100%). STR-E, STR-E-C, and STR-E-EA significantly suppressed the LPS-induced nitric oxide (NO) in a dose-dependent manner. Results of reverse-transcription (RT)-qPCR analysis showed that the peak mRNA levels of IL-1β, TNF-α, iNOS, IL-6, and IL-10 were observed in the LPS-stimulated macrophages at 4 h, 2 h, 12 h, 12 h, and 12 h, respectively. The peak mRNA levels of IL-1β, TNF-α, iNOS, and IL-6 were significantly reduced in the LPS-stimulated macrophages co-treated with 20 ㎍/ml and 25 ㎍/ml of STR-E, respectively. In the case of IL-10, its peak mRNA level slightly increased without statistical significance. Compared with the LPS-stimulated macrophages, the peak mRNA levels of IL-1β, TNF-α, iNOS, and IL-6 reduced in the LPS-stimulated macrophages co-treated with 10 ㎍/ml and 20 ㎍/ml of STR-E-C, respectively. In contrast, the peak mRNA level of IL-10 significantly increased at 8 h. Compared with the LPS-stimulated macrophages, the peak mRNA levels of IL-1β, TNF-α, iNOS, and IL-6 reduced in the LPS-stimulated macrophages co-treated with 5 ㎍/ml and 10 ㎍/ml of STR-E-EA, respectively. In contrast, the peak mRNA level of IL-10 increased at 4 h. Taken together, our data indicated that STR-E, STR-E-C, and STR-E-EA activate macrophages to secrete both pro-inflammatory and anti-inflammatory cytokines.

• Korea Trade Review
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• v.48 no.1
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• pp.215-241
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• 2023

As competition between ports intensifies, port efficiency has always been a hot topic in the port and shipping economy. Boosting regional and national economies by improving port efficiency and promoting sustainable development of ports is also a concern for port operators and local and national governments. In this situation, this study has the following objectives. First, using panel data from 2010 to 2017, the efficiency of 14 major inland ports along the Yangtze River was analyzed, and changes in port efficiency over time were examined. Second, 14 inland ports are divided into the middle, upper, and lower Yangtze River port groups to compare and review differences in efficiency levels of ports by basin. For the study, we applied a three-step DEA analysis method, which evaluated the pure relative efficiency of the port itself by removing the effects of environmental factors and statistical noise that could affect the efficiency evaluation and presented the results. As a result, it was confirmed that there was a clear difference in the efficiency value of the port between the first-stage and the third-stage efficiency evaluation result. In addition, the downstream ports showed relatively high efficiency compared to the middle and upstream ports.

• Journal of the Korean Institute of Landscape Architecture
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• v.51 no.4
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• pp.46-55
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• 2023

This study investigated the public's awareness and purchase behavior of organic farming and environment-friendly agriculture products. This study also analyzed whether awareness affects environment-friendly agriculture products' consumption and price resistance and support for the revitalizing organic farming. This study derived environmental and public interst in organic farming, and a web survey was conducted for statistical analysis. As a result, it was found that the awareness of organic farming did not affect the consumption of environment-friendly agriculture products, but in case of high awareness is high, the resistance to prices is low. In addition, it was found that the stronger the public's awareness, the more positive the support for the expansion of organic agriculture and the willingness to purchase environment-friendly agriculture products. The results of this study are expected to be used as basic data for preparing measures to revitalize organic agriculture in the future.

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.18 no.2
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• pp.127-139
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• 2023

Compensation and pay dispersion has been rigorously scrutinized to investigate their impacts on productivity and organizational performance. However, it is difficult to find a systematic study on the systematic dynamics of compensation and pay dispersion effects specifically in the context of Korean venture companies. Venture companies should manage their organizational resources efficiently to maximize their organizational performance through pay structure by efficiently managing the inherent resources. However, we acknowledge that empirical studies on how compensation and pay dispersion affect organizational productivity and performance are rare to find in the Korean context. To overcome this supplement limitation, this study hypothesized that (1) pay and members' productivity are positively related, (2) pay dispersion and organizational productivity have U shaped relationship, and (3) organizational productivity mediates the positive relationship between compensation and organizational performance. Venture companies and professional sports teams share manifold common characteristics such as size, financial circumstances, and operational objectives. We collect 9 seasons (2013~2014 - 2021~2022) of 10 teams' data of Korean Basketball League teams to test our hypotheses. Methodologically, the assessment of our analysis is rendered with PROCESS macro model 58. The statistical results showed that all hypotheses are statistically supported. This study explains how compensation and pay dispersion affect organizational productivity and performance of venture companies in Korea.