• Korean Chemical Engineering Research
• /
• v.60 no.2
• /
• pp.202-207
• /
• 2022

The study on electrode degradation of Proton Exchange Membrane Fuel Cell (PEMFC) was mainly studied on the particle growth and active area reduction of Pt on the electrode. The degradation of the electrode catalyst Pt in contact with the membrane affects the deterioration of the polymer membrane, but there are not many studies related to this. In this study, the phenomenon of the deposition of deteriorated Pt inside the polymer membrane during the accelerated electrode catalyst degradation test and its effects were studied. The voltage change (0.6 V ↔ 0.9 V) was repeated up to 30,000 cycles to accelerate the platinum degradation rate. When the voltage change cycle was repeated while oxygen was introduced into the cathode, the amount of Pt deposited inside the film was larger than when nitrogen was introduced. As the number of voltage change cycles increased, the amount of Pt deposited inside the membrane increased, and Pt dissolved in the cathode moved toward the anode, showing a uniform distribution throughout the membrane at 20,000 cycles. In the process of the accelerated electrode catalyst degradation test, the hydrogen crossover current density of the membrane did not change, and it was confirmed that the deposited Pt did not affect the durability of the membrane.

• Journal of the Korea Convergence Society
• /
• v.13 no.4
• /
• pp.359-372
• /
• 2022

This study aimed to derive a YouTube content strategy that can be exposed to Trending for a long time by comparing the features of 20 channels in the short/long term using 'YouTube Trending' data in 2021. First, through Pearson's correlation analysis, we found that various factors such as 'the number of title or tag letters' related to long-term exposure, and set this as an index to compare features. As a result, 1)'video title' of about 40-45 letters without excessive special characters, 2)'video length' within 10 minutes, 3)'Video description' is effective when writing 2-3 sentences and adding SNS information or including 3 key tags. Also, it would be more effective if you set key tag pairs such as (먹방, mukbang), (역대급, 레전드) derived through text mining. Through this, the channel will spread globally, bringing various advantages, and will be used as an indicator to evaluate the globality of the channel.

• Journal of the Korea Convergence Society
• /
• v.13 no.4
• /
• pp.433-439
• /
• 2022

The purpose of the study was to determine the suitability of the research model on the intentions of university students to watch mega sports events for people with disabilities to which the theory of planned behavior was applied, and to examine the influence relationship between variables. Based on the items of sub-variables derived from the previous research, the questionnaire was optimally constructed through expert meetings, validity, and reliability verification. For data analysis, Cronbach's 𝛼 and exploratory factor analysis were performed using SPSS 21.0, and structural equation model analysis (SEM) and confirmatory factor analysis (CFA) were performed using AMOS 18.0. The results were as follows; first, as a result of verification of the research model of intentions of university students to watch mega sports events with people with disabilities to which the theory of planned behavior was applied, the evaluation indices of CFI, NFI, and IFI met the acceptance criteria, indicating that this research model was well suited. Second, as a result of examining the influence relationship of the research model on the intentions of university students to watch mega sports event for people with disabilities, it was found that the behavioral beliefs and normative beliefs of university students had a significantly positive (+) influence to intentions. However, it was found that there was a significantly negative (-) influence on the control beliefs to intentions.

• Journal of Digital Convergence
• /
• v.20 no.4
• /
• pp.93-100
• /
• 2022

This study aimed to understand the current status of science and engineering university(SEU) R&D operations depending on the research project characteristics(e.g., stages and characteristics), then provide implications for future university R&D support systems and related policies. Hence, an online survey targeting SEU R&D recipients was conducted between October 4th to November 5th, 2021. Analyzing 445 valid data using the Apriori algorithm, 16 association rules for R&D operation according to the research project characteristics show that regardless of research characteristics, SEU's R&D projects, particularly in applied research, were funded or operated under the leadership of government or public institutions. For basic research, individual researchers had a higher level of autonomy in determining research topics; yet, they had a short duration (3 years) and a unit of evaluation period of more than 3 years. These findings can be empirical evidence for revealing the relationship among various variables in operating SEUs' R&D.

• Journal of the Korea Convergence Society
• /
• v.13 no.4
• /
• pp.625-634
• /
• 2022

The objective of this study was to examine the relationship between physical activity (PA) level and functional fitness (FF) parameters in community-dwelling older adults aged 65 or above in Korea. Subjects' (M: 1,645; F: 2,394) PA level were assessed using a questionnaire. The subjects were divided into two groups: one below the recommended level of PA(LPA) and one above the recommended level (PA). PA was further classified by intensity level into medium- and high-intensity PA (MIPA and HIPA respectively) groups. FF was assessed based on six test items representing the following fitness areas: lower and upper body strength, agility and dynamic balance, flexibility, aerobic capacity, coordination, and body composition. Of the subjects, 36% met the recommended level of PA. Both MIPA and HIPA were superior to LPA in all FF items(p<.05). The HIPA group was significantly better in terms of agility and dynamic balance, coordination, and lower body strength (only in women) than was the MIPA group(p<.05). In conclusion, PA above the recommended level is needed to maintain functional fitness. In addition, HIPA seems to promote fall-related functional fitness and should be encouraged when safe and feasible.

• Journal of Industrial Convergence
• /
• v.20 no.3
• /
• pp.81-87
• /
• 2022

The purpose of this study is to investigate the actual conditions of students before and after acquiring national technical qualifications for nail cosmetologists, and to provide basic data for building systematic data according to students' competency and effective educational methods for acquiring qualifications. The statistical package program SPSS v 18.0 was used for the trend of acquiring national technical qualifications for nail cosmetologists among each variable according to careers in the nail beauty industry for nail beauty students residing in Gwangju. As a result of using the statistical package program SPSS v 18.0, the analysis showed that the proportion of women (80.8%), single (70.8%), 20s (47.7%), college or university graduates (26.2%), and students (42.3%) was high. In addition, as a result of cross-analysis of the period and cost according to gender for obtaining the national technical license of the nail beautician, it was concluded that the Pearson chi-square significant probability (p) was .416 and .899, respectively, and there was a difference between men and women. The field experience of the nail beauty industry was found to have a significant positive (+) effect on the training period, course cost, educational institution, and exam experience (p <.001) for obtaining a certificate. Based on the results of this study, it is necessary to promote the development of nail beauty marketing and to present a constructive vision of the nail beauty industry to be pursued in the future.

• Journal of the Korea Convergence Society
• /
• v.13 no.3
• /
• pp.147-161
• /
• 2022

The purpose of the study was to investigate mothers' beliefs and executions in the social relations area of the 2019 revised Nuri curriculum, and to investigate the effects of beliefs and executions on the emotional intelligence and prosocial behavior of young children. For this purpose, data were collected by distributing questionnaire packets to 268 mothers of children aged 3-5 years who were enrolled in 7 early childhood education institutions in Gyeonggi-do. The collected data were analyzed using the SPSS 25.0 program. As a result of the study, first, there was a statistically significant difference in the overall belief according to the mother's personal characteristic, the educational level, and a significant difference in the sub-factor, living together, in the execution. Second, it was found that there was a significant positive correlation between all variables except for the relationship between social relation execution and the ability to regulate others, which is a sub-factor of emotional intelligence. Third, beliefs and executions in social relation were found to affect all emotional intelligence and pro-social behavior, except for the effect of social relation execution on the ability to regulate others. This study is expected to provide basic data to improve parents' interest in the improvement of young children's social ability and practical interaction in child rearing.

• Industry Promotion Research
• /
• v.7 no.2
• /
• pp.51-58
• /
• 2022

This study is based on Freud's psychoanalysis and intends to deal with the actual psychoanalytic counseling applied to it. In particular, I would like to study the counseling process and counseling techniques. The research results are as follows. The counseling process goes through four stages: initiation, transfer development, training, and transfer resolution as follows after selecting a client and constructing a counseling situation. In the beginning phase, the client listens to important past histories. In the metastasis development stage, it is from the time when metastasis appears. The training phase is the phase in which the client's insight is translated into real life to bring about change. The transfer resolution stage is the period when transfer analysis and interpretation are completed. Counseling techniques include free association, empathy, resistance, transference and countertransference, and interpretation. Free association is a key technique in psychoanalytic therapy and plays an important role in maintaining the analytical framework. Empathy is the ability of the therapist to identify herself with the client and the ability of the therapist to convey the empathic experience to the client itself is a key mechanism for change. Resistance refers to any behavior in which the client does not cooperate with counseling. Transference and countertransference are the main techniques of psychoanalysis. This is because the psychoanalyst induces and resolves the transference of the client during the treatment process. Interpretation refers to the technique of responding verbally in order to understand the needs, meanings, and motives hidden behind the client's thoughts, feelings, and actions. In conclusion, the counseling process of psychoanalytic counseling refers to the purpose of effective counseling by selecting a client and constructing a counseling situation. In addition, the principles of psychoanalysis in counseling techniques are applied to treatment procedures that vary according to the nature of the case, and can be variably applied while treating the same client.

• Journal of the Korean earth science society
• /
• v.43 no.1
• /
• pp.199-209
• /
• 2022

In this study, we analyzed the preparedness of Korean citizens for earthquake hazards. For this purpose, we developed a questionnaire on the preparedness of citizens for earthquake hazards, consisting of three constructs (knowledge, awareness, and management). A total of 1,256 citizen responses were collected through probability proportionate-to-size sampling and then subjected to Rasch analysis, inferential statistical analysis, and cluster analysis. The findings are as follows. First, questionnaire analysis showed that overall, the earthquake preparedness of citizens was 'normal', with a lower management score than knowledge and awareness scores. Second, analysis of variables related to preparedness for earthquake hazards, gender, education level, actual distance, and safety awareness were found to influence preparedness for earthquake hazards. Third, correlation analysis revealed a high correlation between the three constructs of preparedness for earthquake hazards, namely knowledge, awareness, and management, indicating a structurally close relationship with each other. In addition, even if gender and education level differed, these structural correlations were similar. Through cluster analysis, the citizens were further divided into five groups; the group with moderate levels of the three constructs accounted for the majority of citizens. Considering these findings, we propose an educational orientation that fosters the preparedness of citizens for earthquake hazards.

• The Journal of the Korea Contents Association
• /
• v.22 no.4
• /
• pp.58-69
• /
• 2022

The purpose of this study is to find a way that companies can use social media trust effectively to increase brand trust and intelligently increase it by linking with brand authenticity. Therefore, the purpose of this study is as follows. First, a conceptual definition of the research variables of trust in social media, trust in information sources, and trust in messages is established, Second, the casual relationship between two conceptually defined independent variables and mediator variables of perceived risk and self-efficacy was verified. Third, the casual relationship was verified on whether it affects brand authenticity and brand trust through perceived risk and self-efficacy, which are mediators of social media trust. Fourth, through the verification result of the casual relationship between the research variables constituting the research model of this study, it was intended to present academic and practical implications on how social media trust can effectively enhance brand trust.