• Korean Journal of Fisheries and Aquatic Sciences
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• v.57 no.4
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• pp.429-437
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• 2024

This study aimed to develop and commercialize abalone Haliotis discus hannai marinated in seasoned soy sauce (AM-S) for the elderly by adjusting its texture (hardness) and strengthening its nutritional components. The number of pounding cycles [X₁, 2-14 times] and heating time in a retort [X₂, 5-19 min] were selected as independent variables, and hardness (Y₁) and overall acceptance (Y₂) were selected as dependent variables. The optimal conditions for X₁ and X₂ were 12 pounding cycles and heating in a retort for 17 min, respectively. The hardness values 209.2×10³ N/m² for the third method and 259.1×10³ N/m² for the first method. The nutritional value was 13.1 g/100 g crude protein and vitamins A, D, and C were not detected. The mineral content was 33.2 mg/100 g calcium and 258.7 mg/100 g potassium. Organisms from the coliform group and Escherichia coli were not detected. Therefore, AM-S for the elderly was classified as a hardness- and nutrient-controlled product based on the standards and specifications of senior-friendly foods provided in the MFDS and classified as the first step of senior-friendly foods according to the standards and specifications of senior-friendly foods provided in the KS.

• The Mathematical Education
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• v.63 no.3
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• pp.451-466
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• 2024

This study investigated elementary preservice teachers' conceptions of a generating line, an ambiguous concept in school mathematics. The preservice teachers' conceptions of a generating line can be classified into four types: (a) only cones have generating lines, (b) only cones and cylinders have generating lines, (c) solids of revolution have generating lines, (d) straight lines on the lateral surface are generating lines. 22.1% of all preservice teachers believed that only cones have generating lines, and most of them followed the definition of a generating line presented in elementary mathematics textbooks. The conception that only cones and cylinders have generating lines was the least investigated. However, since there were instances where generating lines were defined with the use of a director curve, it became important to explore topics more thoroughly, such as generating lines of a truncated cone. 27.9% of all preservice teachers believed that solids of revolution have generating lines. This conception was marked by differing opinions on whether spheres also have generating lines. The conception that straight lines on the lateral surface are generating lines was the most frequently investigated. This conception differs from the traditional view in school mathematics because it suggests using a director curve to define generating lines. Based on these analysis results, the researcher developed specific teaching methods that considered both subject matter knowledge and pedagogical content knowledge for preservice teachers. In addition, the researcher proposed a consensus definition of a generating line in mathematics education.

• Journal of Christian Education in Korea
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• v.78
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• pp.137-151
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• 2024

Purpose of Research: This study aims to gain insights into the direction of multicultural faith community education, which is a part of multicultural Christian education that contemporary Korean churches should establish, based on the holistic mission practices of missionary Elizabeth J. Shepping. Research Content and Method: The study begins with a brief overview of the life of missionary Elizabeth J. Shepping, who experienced multicultural living in various countries, highlighting the prepared professional missionary within the context of her time. The study then examines the details of her holistic mission practices as a professional missionary. The direction of multicultural faith community education in Korea is explored by understanding the background and research trends of multicultural Christian education that Korean society and the Korean church are currently facing. Practical aspects, supplementary points, and directions for the future implementation of multicultural faith community education in the Korean church are also proposed. Results and Conclusions: In conclusion, This study emphasizes multicultural faith community education as a component of the pastoral paradigm that the Korean church needs to improve. Four practical directions are proposed: first, education for holistic service; second, education for social and public practice; third, implementation of public service education linked to the local community; and fourth, activation of dedicated service departments and training of professional leaders. However, the study acknowledges a limitation in not providing specific practical programs for multicultural faith community education suitable for the Korean church context. Continuous research is necessary through various supplementary points in the future.

• Journal of Christian Education in Korea
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• v.78
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• pp.191-212
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• 2024

Purpose of the study: The purpose of developing this youth mission education material is to enable youth to understand the fundamental truths and values of Christianity based on the Bible, comprehend mission work, and practice it in their lives. Research Content and Method: In this study, we examined the concept and necessity of mission education for youth, and presented cases of mission education. The development process of the the materials involved prototype development and conducting FGI, first and second rounds of materials development, expert review and proofreading, and revisions and enhancements to produce the final version. Conclusions and Suggestions: This paper presents the development of mission education materials structured in 12 lessons, specifically designed for youth engagement within churches and Christian alternative schools. These materials include editions for teachers, students, and instructional resources. The contents of mission education are designed from the perspective of Bible, history, culture, and strategy, and are organized into modules so that they can be flexibly utilized in any order in the Christian education field. Additionally, each lesson includes three mission activities to enhance student engagement and motivation. This youth mission education material can serve as a foundational resource for conducting mission education suitable for the next generation in local churches and Christian alternative schools and for continuing mission work.

• Journal of Practical Engineering Education
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• v.16 no.4
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• pp.567-575
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• 2024

This study was conducted to provide basic data on how to use Generative AI and education to strengthen Generative AI competency in vocational counseling by confirming the experience and perception of job counselors' use of Generative AI. A questionnaire was produced based on literature research and FGI preliminary surveys, and the main contents of the questionnaire were 'experience in using Generative AI (whether to have experience, type of tool, job, educational experience, etc.) and Generative AI recognition (recognition level, usefulness, availability, educational needs, etc.). An online survey was conducted for vocational counselors, and a total of 293 data were analyzed. As a result of major research, first, there were many counselors who had no experience in using Generative AI(60%), and the response that the reason for not using it was because they did not feel the need(28%). Second, the 'degree of recognition' in the Generative AI was somewhat low (M=2.77), and 'Generative AI usefulness' was found to be at a normal level (M=3.32), and it was recognized that it would be necessary mainly for jobs related to 'vocational information'. Third, 'tool (computer use, etc.) competency' (26%) was the highest as the competency required for future vocational counselors, and 'how to use Generative AI' (57%) accounted for a high proportion of the educational content necessary to improve these competencies.

• Journal of Practical Engineering Education
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• v.16 no.4
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• pp.529-540
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• 2024

In industrial sites, experiential virtual training contents are partially used to replace high-risk and high-cost training, and virtual training contents development is also becoming active along with the increasing demand for non-face-to-face industries. Existing studies mainly focused on quantitative research through surveys, and only measured the change in users' learning commitment. This study attempted to investigate the effect of the combination of theoretical education and virtual training on the improvement of actual job performance in a dual vocational training environment by conducting an experimental study. This study studied whether the combination of theoretical education and virtual training can improve the performance of vocational training in dual vocational training (comparative work and learning) in which companies and schools participate. The results of pre- and post-evaluation of vocational training using traditional vocational training and virtual training contents were compared with 24 vocational training trainees. As a result of the study, it was demonstrated that the outcome of virtual training education was higher than that of traditional vocational training, and the combination of virtual reality-based education was more effective in theoretical education. This study suggests that the virtual training content presents a new paradigm for industrial safety education, and through the interview results of trainees, it was confirmed that virtual training can lead to a change in attitude toward safety beyond just knowledge transfer. This contributes to the prevention of safety accidents in industrial sites and provides important implications for improving the quality of vocational training.

• The Journal of the Convergence on Culture Technology
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• v.10 no.5
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• pp.585-592
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• 2024

Recent Chinese animations emphasize the harmony between content and form, as well as the fusion of reality, emotion, and aesthetic ideals, through character designs that blend traditional cultural elements with modern aesthetic sensibilities. We have observed that this fusion has significantly contributed to the development of the Chinese animation industry. In particular, "Nezha: Birth of the Demon Child" stands out as an important example, where traditional character images are reinterpreted in a modern way, showcasing a unique artistic direction. In this study, we have conducted an in-depth analysis of the major characters in "Nezha: Birth of the Demon Child", focusing on their form, acting, and movement elements based on the theoretical foundation of traditional Chinese aesthetics.We explored how traditional Chinese costumes, totems, and painting styles were utilized in the design of the characters' forms, and discovered that these elements imparted a distinctive artistic quality. Furthermore, we found that the acting and movement elements were influenced by Chinese cultural practices, traditional theater, and martial arts, enriching the characters' motions and expressions. Through this research, we aim to highlight how Chinese animation integrates tradition and modernity, creating new artistic value, and establishing a unique competitive edge in the global animation market.

• Journal of Korean Society of Occupational and Environmental Hygiene
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• v.34 no.3
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• pp.193-201
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• 2024

Objectives: Paints contain various types of metal substances. However, our review of MSDS (Material Safety Data Sheets) for paints found that their components were often kept secret or exact content information was otherwise not provided. We analyzed the metal elements in various inorganic pigment-based paints available in South Korea in this study and checked whether they contain hazardous metal substances as defined by the Occupational Safety and Health Acts. We investigated issues of health hazard classification related to the metal elements. The study is intended to contribute to strengthening the management of hazardous substances by suggesting improvements to MSDS. Methods: We randomly selected 19 samples that were predicted to contain hazardous inorganic pigments after reviewing MSDS among paints currently in use. The samples were analyzed using XRF (X-ray Fluorescence spectrometry), ICP_OES (Inductively Coupled Plasma-Optical Emission Spectroscopy) and SP-ICP-MS (Single Particle-ICP-Mass Spectroscopy). Results: The most common elements in the samples were Al (aluminum), Fe (iron), Ti (titanium), Ca (calcium), and Si (silica). One sample contained more lead than allowed by the limits. There were ten samples that could potentially contain nanoforms, seven samples that contained titanium dioxide, and six samples that contained complex inorganic color pigments (CICPs). Conclusions: Inorganic pigments in paints should be evaluated for hazards separately from other metallic compounds and reflected in the MSDS because they have different characteristics than other metallic compounds. These include particle size, crystal structure, and complex substances. The results of this study can be helpful for determining whether a paint contains sufficient hazardous metal compounds to affect its classification, and it can be a guideline for improving MSDS through comparative review and rationalization with the manufacturer's MSDS. This would make it possible to contribute to the management of chemical substances in the workplace through the proper MSDS disclosure of paints.

• Korean Journal of Mineralogy and Petrology
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• v.37 no.2
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• pp.67-76
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• 2024

In light of the development of modern high-tech industries, where human sustainability is becoming increasingly important, anorthosite needs to be reevaluated not only for its potential as a new source of aluminum, but also as a primary resource with a wide range of industrial applications. In particular, a relatively simple chemical composition with a high CaO content and Al₂O₃/SiO₂ ratio, along with its relatively low impurity levels and chemically stable nature offers significant advantages in industrial processes. Thus, anorthosite is considered as an important industrial resource in the age of energy transition. In this review, we examine the mineralogical and geochemical characteristics of anorthosite that determines their stability and reactivity. Based on their characteristics, we propose the potential use of utilizing the anorthosite as an alternative to the Bayer process which has the limitations. We also explore its application as the eco-friendly geo-synthetic materials, and as the new materials for carbon dioxide storage and utilization. As the demand for aluminum applications accelerates, anorthosite is gaining their importance in the geological industry and clean energy field. Therefore, advanced and extensive research on anorthosite complex occurring in the Hadong and Sancheong regions of Korea is critical to obtain opportunities to enhance economic advantages through efficient utilization of national resources and to lead to sustainable development.

• Journal of Life Science
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• v.34 no.10
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• pp.691-700
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• 2024

Frutobacillus spp. strains (Fs) were isolated from honeybee larvae to evaluate their functionality and potential use as probiotics. Anti-microbial activity was generally observed in F strains against Gram-negative, Gram-positive, and yeast strains, with F2 and F3 being superior, particularly F2. Kerosene emulsification was similarly observed in strains other, except for F4. Emulsification analysis based on carbon sources showed that F2 had high emulsification in the presence of fructose but lower than the standard strain and 16S rDNA sequence analysis revealed that the F2 was identified as Fructobacillus fructosus. The growth curve of F2 showed maximum growth at 18 hr, followed by a slight increase. Furthermore, antimicrobial activity and pH showed maximum and minimum values at 18 hr, respectively, and remained constant thereafter. Lactic acid content showed a slight decrease after reaching its maximum value at 24 hr of culture. Acid resistance was observed up to pH 2.5, but completely lost at pH 2.0. Bile acid resistance was generally strong. F2's adhesion to mucin was higher compared to S. Typhimurium, which increased until 18 hr of culture and then decreased. Enzyme activity according to anaerobic culture time was high for carboxymethylcellulase (CMCase), avicelase, and mannase, regardless of the presence of fructose. Auto- and co-aggregation were higher compared to the standard strain, and surface hydrophobicity was high for chloroform, which indicates electron donor properties. Therefore, the Fructobacillus fructosus F2 can be considered a potential probiotic due to its excellent anti-microbial, emulsification, acid resistance, bile resistance, CMCase, mannase, and auto- and co-aggregation properties.