• The Korean Journal of Coaching Psychology
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• v.7 no.3
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• pp.109-125
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• 2023

This study aimed to investigate the influence of power distance on organizational outcome variables from the perspective of employee-organizational fit. Through cluster analysis, we sought to identify the subgroups that exist based on the combination of employees' power distance and organizational power distance. Additionally, we examined whether differences exist among these subgroups in terms of positive and negative organizational outcomes. A total of 398 participants were included in the study, and three distinct clusters were identified through cluster analysis. Cluster 1 comprised individuals with low power distance among employees and high power distance within the organization(LH), Cluster 2 consisted of individuals with high power distance in both employees and organizations(HH), and Cluster 3 represented individuals with significantly higher power distance among employees compared to their respective organizations(HL). When analyzing the differences between these three subgroups in relation to organizational outcomes, no significant differences were found in positive work affects. Overall, the LH group exhibited the most favorable organizational results, while the HH group displayed the most negative organizational outcomes. In light of these findings, we discussed the academic and practical implications of this study, as well as its limitations.

• Science of Emotion and Sensibility
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• v.26 no.4
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• pp.3-14
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• 2023

Recently, the effect of using social media on psychological well-being has been highlighted. However, studies exploring factors that may predict the quality of social media relationships are relatively rare. The present study investigated whether social media activity and psychological states, such as loneliness and depression, can predict the quality of social media relationships during the COVID-19 quarantine period using a machine learning technique. Ninety-five participants completed a self-report survey on loneliness, Instagram activity, quality of social media relationships, and depression at different time points (during the self-isolation and after the release of self-isolation). Similarity analyses, including multidimensional scaling (MDS), representational similarity analysis (RSA), and classification analyses, were conducted separately at each point in time. The results of MDS revealed that time spent on social media and depression were distinguished from others in the first dimension, and loneliness and passive use were distinguished from others in the second dimension. We divided the data into two groups based on the quality of social media relationships (high and low), and we conducted RSA on each group. Findings indicated an interaction between the quality of the social media relationships and the situation. Specifically, the effect of self-isolation on the high-quality social media relationship group is more pronounced than that on the low-quality group. The classification results also revealed that the predictors of social media relationships depend on whether or not they are isolated. Overall, the results of this study imply that social media relationship could be well predicted when people are not in isolated situations.

• Journal of the Korean Applied Science and Technology
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• v.40 no.6
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• pp.1201-1212
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• 2023

This study aimed to analyze the changes in underwater anxiety and water safety consciousness among college students through participation in survival swimming education and the relationship between these changes and various factors. To achieve this, 200 college students who were participating in survival swimming education from universities located in the Busan-Ulsan-Gyeongnam region were selected as participants using convenience sampling. Among them, a final valid sample of 191 students was utilized. Data analysis was conducted using SPSS 25.0 statistical software, including exploratory factor analysis, reliability analysis, paired sample t-test, repeated measures ANOVA. The results are as follows: Firstly, college students who participated in survival swimming education showed a decrease in post-test underwater anxiety and an increase in water safety consciousness compared to pre-test. Secondly, the interaction between the groups based on the presence or absence of swimming education experience and time showed a significant effect only in the safety education, a sub-factor of water safety consciousness. Based on these results, the effectiveness of survival swimming education for college students could be confirmed, and further directions for expanding survival swimming education in university settings could be considered.

• Korean Journal of Ichthyology
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• v.36 no.2
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• pp.156-163
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• 2024

This study investigated the temporal patterns of species composition and abundance of larval fish assemblages through seasonal samplings in the coastal waters off Uljin, East Sea from April 2022 to February 2023. A total of 27 taxa of larval fishes were collected in the study area. The dominant fish larvae were Pseudopleuronectes herzensteini, Sebastes inermis, Ammodytes japonicus, Pseudopleuronectes yokohamae, Rudarius ercodes and Parablennius yatabei constituting 86.6% of total larval fish abundance. The number of species, abundance, and diversity index fluctuated according to season, showing the highest species number and abundance in April (spring) and diversity in July (summer). Larval fish assemblages were divided into three seasonal groups, including spring, summer and winter groups based on relative abundance of each fish larvae. Among abundant fish larvae, P. herzensteini predominated during spring, while P. yatabei and R. ercodes were abundant during summer. S. inermis, A. japonicus and P. yokohamae constituted the most abundant larval fish group during winter. These temporal changes in larval fish assemblages were attributed to seasonal changes in surface water temperature. The results from this study may elucidate our understanding of larval fish diversity and contribute to evaluating the nursery function of coastal habitats in the East Sea.

• The Journal of the Acoustical Society of Korea
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• v.43 no.1
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• pp.60-71
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• 2024

The present study aims to investigate the level difference of floor impact noises of composite floor structure using EVA resilient materials. In order to this, four different types of resilient materials were designed combining PET, PP sheet and EVA mount including Flat type, Deck type, Cavity type and Mount type. Totally 9 different samples were made for acoustic measurements which were carried out twice with bang-machine and impact ball as the heavy-weight floor impact noise sources. All the floor impact noise measurements were undertaken at the authentication institution. As a result, concerning Flat and Cavity types, it was found that 2 dB ~ 5 dB of heavy-weight floor impact noise was reduced supplementally when PET was added, while floor impact noise larger than 50 dB was acquired when single resilient material was used. Especially, most high performance was obtained for Mount type with 1st grade of light-weight floor impact noise and 2nd grade of heavy-weight floor impact noise. This is because of material property with low dense PET sound absorption materials which fill all around EVA mounts. Also, it was considered that this results are due to the sound impact absorption by the both EVA mounts and the air cavity between EVA mount and PP sheet. Also, it was found that at least 36 EVA mounts per 1m2 area of resilient panel make more noise reduction of heavy-weight floor impact noises.

• Journal of Applied Biological Chemistry
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• v.66
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• pp.484-491
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• 2023

Maize is one of the major crops consumed in worldwide, which nutrients accounts for a large amount of starch, but also functional components, and phenolic acid is known to have a high content. Maize is divided into waxy maize, sweet maize, and normal maize with its shape and use, therefore there is also a difference in nutritional composition. This study was conducted to analyze the content of functional components according to the type of maize and to produce natural variation data in consideration of environmental factors. 3 shapes of maize (waxy maize, sweet maize, and normal maize) samples cultivated in 3 regions (Suwon, Daegu, and Hongcheon) were analyzed using HPLC and GC-TOF-MS. Comparing with type through ANOVA, multivariate statistical analysis, Pearson correlation analysis, 28 components, including carotenoids and tocopherols, showed significant differences among a total of 32 components (p <0.05), 15 of them showed very significant differences (p <0.001). When comparing with regions, 15 components showed significant differences and only vanillate, syringate, C23-ol of them showed most significant differences (p <0.001). As a result of principal component analysis, cluster classification was distinguished by shape than by region, with α-carotene, cholesterol for waxy maize, vanillate and stigmasterol for sweet maize, lutein and β-carotene for normal maize had a great effect on cluster formation. It suggests that the content of functional components is more affected by genetic factors than environmental factors.

• The Journal of the Convergence on Culture Technology
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• v.10 no.3
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• pp.593-604
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• 2024

This study examined the effect of leadership competence on job embeddedness among child co-residence workers to mitigate the negative impact of human resource management on their low job tenure and treatment. The study initially tested the mediating effects of social capital and organizational culture between the two variables, thereby suggesting ways to enhance job attendance among workers in children's shared family homes. The results of the study are as follows. Leadership competencies among child co-residence workers were found to have a positive effect not only on job embeddedness but also on social capital and organizational culture. Social capital and organizational culture were identified as mediators in the relationship between leadership competencies and job commitment The primary significance of this study lies in its identification of the relationship between leadership competence and job attendance - a factor previously overlooked. This finding offers a pathway to increase job attendance. Furthermore, the study expands the scope of relevant variables to include leadership competence, social capital, and organizational culture. Finally, it sheds light on the mediating effects of social capital and organizational culture on the relationship between leadership competence and job embeddedness.

• The Journal of the Convergence on Culture Technology
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• v.10 no.3
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• pp.749-761
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• 2024

The purpose of this study analyzes the cultural identity, learning motivation, learning strategies, and second language acquisition trends of Chinese students living in Korea to reveal the structural relationship between these four variables, thereby revealing the cultural identity, learning motivation, and learning strategies of international students in the Korean language learning process. The purpose is to provide basic data to promote . This study verified reliability and validity through a preliminary survey targeting 200 people. This survey was conducted on 1,006 Chinese students studying abroad at six universities in Seoul, Gyeonggi-do, Busan, and Chungcheong-do from May 28 to June 15, 2023. As a result of the study, first, the structural relationship between variables was that cultural identity had a positive effect on learning motivation, learning strategies, and second language acquisition. Second, learning motivation had a positive (+) effect on learning strategies and second language acquisition. Third, learning strategies had a positive (+) (+) effect on second language acquisition. Fourth, learning motivation and learning strategy between cultural identity and learning strategy were found to play a positive (+) mediating role and multiple mediating roles. Therefore, in order to promote international students' cultural identity, learning motivation, and learning strategies in the Korean language learning process, it is necessary to increase opportunities for international students to directly experience the formation of cultural identity and to organize and teach a multifaceted curriculum centered on practice.

• The Journal of the Convergence on Culture Technology
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• v.10 no.3
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• pp.769-782
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• 2024

The purpose of this study analyzes by confirming the structural relationship between the four variables of Chinese college students' health beliefs, planned behavior, behavioral control, and exercise persistence, this study can establish measures to enhance and improve college students' health beliefs and planned behavior and improve behavioral control. The purpose is to provide basic data to improve the level of continued exercise among college students. The EBI study verified reliability and validity through a preliminary survey targeting 380 people. This survey distributed questionnaires to college students at 52 universities from May 12 to July 21, 2023, and a total of 5,109 copies were finally selected and analyzed, excluding invalid questionnaires. As a result of the study, first, the structural relationship between variables showed that health beliefs had a positive effect on planning behavior, behavioral control, and exercise persistence. Second, planning behavior was found to have a positive effect on behavioral control and motor persistence. Third, behavioral control was found to have a positive effect on exercise persistence. Fourth, planning behavior and behavioral control were found to play a positive mediating role in the relationship between health beliefs and exercise persistence. Therefore, to improve college students' health beliefs, schools should open a health psychology curriculum. Furthermore, there is a need to strengthen college students' beliefs about their health by developing and distributing customized health education programs for college students.

• The Journal of the Convergence on Culture Technology
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• v.10 no.3
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• pp.47-52
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• 2024

The purpose of this study was to examine the relationship between children's self-esteem, peer attachment, parenting attitudes, and children's grit, and to specifically identify the influence of children's self-esteem, peer attachment, and parenting attitudes on children's grit. The characteristics of the survey subjects were identified through frequency analysis and descriptive statistics analysis of the 11th year of the Korea Children's Panel (2018) data, and Pearson's moment correlation coefficient was calculated for correlation analysis between major variables. Multiple regression analysis was conducted to examine the influence of children's self-esteem, peer attachment, and parenting attitudes on children's grit. The research results are as follows. First, children's self-esteem, peer attachment, and parenting attitudes were found to be positively correlated. Second, the child's self-esteem was found to have a positive influence on the child's grit, and among the peer attachment sub-variables, peer trust was found to have an influence, and among the sub-factors of parenting attitude, 'mother' affection/involvement, 'father' Democratic relationships were found to have an effect. In other words, it can be seen that children's self-esteem at the personal level, peer trust at the school level, and maternal affection and paternal relationship at the family level are useful variables that strengthen children's grit. Accordingly, in order to improve children's grit level, we must consider promotion measures through intervention and support at a multifaceted level.