The Impact of the Emotional Responses of Korean Students Participating in School Sports.

Background: Physical education in schools improves students' health, physical strength, and lifelong physical engagement. Therefore, participation must be encouraged. This study aimed to investigate the relationship between emotional responses and participation satisfaction, word-of-mouth (WOM) praise, and WOM activity in students participating in school sports. Few studies have considered WOM praise and activity separately. This study addresses this gap in the literature. Methods: In 2023, a survey of total of 345 students in Gyeonggi-do, Korea, was conducted using convenience sampling. Data processing included factor analysis to verify validity and reliability, correlation analysis, confirmatory factor analysis, and structural equation modeling to test the hypotheses. Results: The results confirmed a relationship between the emotional responses of students and satisfaction with participation. The emotional responses (ventilation [P<0.001], sense of dominance [P<0.001]) significantly affected participation satisfaction, and the latter had a possible causal relationship with WOM praise (P<0.001) and activity (P<0.001). Conclusion: The emotional responses of school sports participants were related to participation satisfaction, WOM praise, and WOM activity. Participation satisfaction significantly affected WOM praise and WOM activity. Therefore, to contribute to students' lifelong health, school sports programs should be developed and implemented to induce positive emotional responses, ensure students' participation in school sports, and improve their future quality of life.

The Structural Relationships among Academic Pressure, Independent Learning Ability, and Academic Self-Efficacy.

Background: The coronavirus disease pandemic has caused significant disruption in the field of education, resulting in the need for more online classes and a blended offline and online teaching model. Therefore, understanding what makes this model effective is important. Accordingly, this study explored the structural relationships among academic pressure, independent learning ability, and academic self-efficacy in a blended teaching environment during the pandemic and independent learning ability's mediating effect on the relationship between academic pressure and academic self-efficacy. Methods: Adopting a random sampling method, this study surveyed 761 Chinese college, Shaanxi Province, China in 2022 and university students. Factor analysis, correlation analysis, structural equation modeling, and path analysis were used to analyze the data. Results: The results show that the academic pressure faced by Chinese English majors had a significant negative impact on academic self-efficacy (P<0.001). However, academic pressure had no statistical effect on students' independent learning ability (P=0.317). Moreover, independent learning ability had a significant positive effect on academic self-efficacy (P<0.001) and a mediating effect on the relationship between academic pressure and academic self-efficacy (P=0.032). Conclusion: Independent learning ability can directly and indirectly affect academic self-efficacy. Thus, in an online and offline blended teaching model, teachers should guide students regarding self-exploration, communication, and cooperation based on existing knowledge and experience. They should also enable students to improve their learning process and independent learning ability. Various language learning situations should be established for learning English so that by experiencing success and failure, students can ultimately improve their academic self-efficacy.

Impact of Survival Swimming Experience on Positive Emotions, Self-Efficacy, and Safety Behaviors among Swimming Club Members in Korea.

Background: We aimed to analyze the influence survival swimming experience on positive emotions, self-efficacy, and safety behaviors among swimming club members in Korea. Methods: A total of 205 adult men and women involved in swimming clubs in the Seoul and Gyeonggi areas of Korea were surveyed via convenience sampling from 2021-22. A self-administered questionnaire was used to obtain data related to positive emotions, self-efficacy, and safety behaviors. Frequency analysis, Cronbach's α, reliability analysis, confirmatory factor analysis, correlation analysis, and structural equation modelling were performed. Results: Survival swimming experience had a positive effect on positive emotions (P<0.05), self-efficacy (P<0.05), and safety behaviors (P<0.05). Positive emotions did not have a positive effect on self-efficacy; however, they were found to have a positive effect on safety behaviors. Conclusion: Positive emotions, self-efficacy, and safety behaviors can be improved via survival swimming experience. Successful experiences with survival swimming could promote self-efficacy and safety behaviors, highlighting the importance of survival swimming education. Therefore, proficiency should be emphasized when attempting to increase the effectiveness of survival swimming education. To achieve this outcome, developing diverse survival swimming programs for each level of proficiency is necessary to ensure adequate transmission of knowledge.

Structural Relationships among Self-Management, Self-Resilience, and Adaptability to Chinese and Korean College Life in Physical Education Majors.

BACKGROUND: We aimed to investigate the relationships among self-management, self-resilience, and adaptability to college life in Chinese and Korean students majoring in physical education. In addition, we explored the mediating role of self-resilience in the relationship between self-management and adaptability to college life. METHODS: Random sampling was used to identify participants majoring in physical education at five colleges and universities in Shaanxi (China) and four universities in Kyonggi-do Province (Republic of Korea) in June 2020. We analyzed data for 700 students via exploratory factor analysis, confirmatory factor analysis, correlation analysis, structural equation model analysis, and path analysis. RESULTS: Self-management had a significant impact on self-resilience (P<0.001), while self-resilience had a significant impact on adaptability to college life (P<0.001). Among self-management variables, body management had a significant negative impact on adaptability to college life (P<0.001). Self-resilience had a mediating effect on the relationship between self-management and adaptability to college life (P=0.024). CONCLUSION: Our findings highlight the need to develop systems that cultivate students' abilities to integrate into university life, including their abilities to face unsatisfactory studies, manage spare time, make physical adjustments, adapt to new living environments, and maintain interpersonal relationships. Strengthening self-management abilities will lead to improvements in self-resilience, adaptability, and satisfaction with university life among physical education majors.

Structural Relationship among Mobile Phone Dependence, Self-Efficacy, Time Management Disposition, and Academic Procrastination in College Students.

BACKGROUND: We aimed to investigate the relationship among mobile phone dependence, self-efficacy for self-regulated learning, time management disposition, and academic procrastination in Chinese students majoring in physical education. In addition, we explored the mediating roles of self-efficacy for self-regulated learning and time management disposition in the relationship between mobile phone dependence and academic procrastination. METHODS: We adopted a random sampling method to identify 324 physical education majors at five universities in Shaanxi Province, China in 2020. Data were analyzed via exploratory factor analysis, confirmatory factor analysis, correlation analysis, structural equation model analysis, and path analysis. RESULTS: Mobile phone dependence had significant positive effects on academic procrastination (P<0.001) and self-efficacy for self-regulated learning (P<0.05) but a significant negative effect on time management disposition (P<0.001). Self-efficacy for self-regulated learning had a significant positive effect on academic procrastination (P<0.001), while time management disposition had a significant negative effect on academic procrastination (P<0.01). Notably, self-efficacy for self-regulated learning and time management disposition mediated the relationship between mobile phone dependence and academic procrastination (P<0.05). CONCLUSION: In addition to its direct effect on academic procrastination, mobile phone dependence exerts an indirect effect via time management disposition and self-regulated learning efficacy. Reducing students' dependence on mobile phones is necessary for attenuating academic procrastination on university campuses. Thus, universities should aim to restrict the use of mobile phones in the classroom, actively cultivate students' confidence in their self-regulated learning ability, and educate them regarding appropriate time values.

The full-length mitochondrial genome of Tachysurus fulvidraco (Siluriformes: Bagridae) from Geum river in Korea.

The full-length mitochondrial genome of the yellow catfish, Tachysurus fulvidraco was analyzed by the primer walking method. Its assembled mitochondrial genome was found to be 16,527 bp, consisting of 37 genes (13 protein-coding genes, 22 tRNA gens, and 2 rRNA gens). The gene content and order of T. fulvidraco were congruent with those of typical vertebrate fishes. In the phylogenetic tree, it showed the closet relationship to the another conspecific specimen from China and Pseudobagrus koreanus and well separated from the other species in the family Bagridae.

First signal from a broadband cryogenic preamplifier cooled by circulating liquid nitrogen in a 7 T Fourier transform ion cyclotron resonance mass spectrometer.

Despite the outstanding performance of Fourier transform ion cyclotron/mass spectrometry (FTICR/MS), the complexity of the cellular proteome or natural compounds presents considerable challenges. Sensitivity is a key performance parameter of a FTICR mass spectrometer. By improving this parameter, the dynamic range of the instrument can be increased to improve the detection signal of low-abundance compounds or fragment ion peaks. In order to improve sensitivity, a cryogenic detection system was developed by the KBSI (Korean Basic Science Institute) in collaboration with Stahl-Electronics (Mettenheim, Germany). A simple, efficient liquid circulation cooling system was designed and a cryogenic preamplifier implemented inside a FTICR mass spectrometer. This cooling system circulates a cryoliquid from a Dewar to the "liquid circulation unit" through a CF flange to cool a copper block and a cryopreamplifier; the cooling medium is subsequently exhausted into the air. The cryopreamplifier can be operated over a very wide temperature range, from room temperature to low temperature environments (4.2 K). First, ion signals detected by the cryopreamplifier using a circulating liquid nitrogen cooling system were observed and showed a signal-to-noise ratio (S/N) about 130% better than that obtained at room temperature.

Synthesis and cytotoxicity of new aromatic ceramide analogs with alkylsulfonamido chains.

A series of D-erythro ceramide analogues, N-(2S, 3R, 4E)-1, 3-dihydroxy-5-phenyl pent-4-en-2-yl alkyl sulfonamides, were synthesized and evaluated for their in vitro cytotoxic activities against five human tumor cell lines. The aromatic sulfon amido ceramide analogue (10f) showed more potent cytotoxic activity than that of the B13, indicating that a sulfonamide group appears to serve as a bioisostere of an amide in drug design. Variations in the alkyl sulfonyl chain length significantly influenced the cytotoxic activity of the sulfonamido ceramide analogues, but the introduction of a para halogen on the phenyl ring of aromatic ceramide analogues had no affect on the activity.