• The Journal of the Convergence on Culture Technology
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• v.10 no.5
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• pp.833-840
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• 2024

Korean perilla (Perilla frutescens Britten var. Japonica Hara) has been used in various ways in food since before the Unified Silla period, and it has not been systematically studied due to its long cultivation history. However, the global perilla oil market is expected to reach $1,854.55 million by 2031, up from $981.6 million in 2023, with a CAGR of 10.6%. In the bio industry, bio cosmetics refer to cosmetics that contain natural ingredients based on biotechnology, but there is still no clear academic definition. As consumers' interest has recently focused on raw materials and ingredients, interest in substances based on natural substances that enhance skin metabolism is increasing. Despite the importance of natural extracts produced domestically, there has not been much research on domestic perilla seed as a cosmetic raw material and material. This study was conducted based on previous papers and literature studies conducted over the past five years on perilla seed after oil extraction, and it was found that perilla seed contains a large amount of phenolic compounds with excellent radical scavenging ability, and thus it was possible to find out the antioxidant and anti-inflammatory effects, whitening effects, and anti-obesity effects of skin beauty. Therefore, this study is expected to be used as basic data for various studies on perilla, a natural extract, as a bio-industry cosmetic material.

• The Journal of the Convergence on Culture Technology
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• v.10 no.5
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• pp.83-88
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• 2024

This paper analyzes the historical significance and aesthetic meaning of the emergence of 'artists as theoreticians,' a major aspect of contemporary art criticism practice, focusing on the editorial project of the British monthly visual arts magazine Studio International. The sharing of writings about art through publications confirms the lens of critical perspectives on contemporary art and serves as an opportunity to reflect on broader political and cultural conditions. In particular, this paper can function as a resource for assessing the art historical horizons created by the connection between artists and publications, rather than theorists or critics, on the magazine platform. This paper focuses on the debates formed through Studio International in the late 1960s, examining the magazine's stance on new developments in art, the practice of defining critical terms that accompanied it, and the responses to them. The texts of 'artists as theoreticians' such as Victor Burgin and Joseph Kosuth, published in Studio International, overcame the conventionality of art that relies on formal aspects, and argued that the concept of art as something named by the artist is possible as art that does not require the mediation of objects. The discourse practices of these artists became an important factor in destroying the authority of the historicist critical paradigm, thereby acquiring the art historical value of artists who took the position of theoreticians dealing with art.

• The Journal of the Convergence on Culture Technology
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• v.10 no.5
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• pp.819-826
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• 2024

This study aims to examine the correlations between self-control, time management behavior, and SNS addiction proneness among university students, and to analyze their impact on academic procrastination. The goal is to explore intervention strategies to improve academic procrastination behaviors. The subjects of this study were 167 students from a university located in City D, who agreed to participate and responded to the survey between February 6, 2024, and April 19, 2024. The collected data were analyzed using the SPSS 21.0 statistical program, employing t-test, ANOVA, Pearson's correlation coefficient, and multiple regression analysis. Academic procrastination showed significant negative correlations with self-control (r=-.570, p<.001) and time management behavior (r=-.544, p<.001), and a significant positive correlation with SNS addiction proneness (r=.367, p<.001). The factors influencing academic procrastination were time management behavior (β=-.461, p<.001), self-control (β=-.359, p<.001), and SNS addiction proneness (β=.199, p<.001), with an explanatory power of 52%. To reduce academic procrastination among university students, it is necessary to implement various extracurricular programs aimed at improving time management behavior.

• The Journal of the Convergence on Culture Technology
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• v.10 no.5
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• pp.693-698
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• 2024

As there are various types of discontinuities developing along with various rock types, the orientation and density of each type of discontinuities were measured to analyze the behavior of groundwater within the rock mass. Among the orientations of discontinuities, the strike was measured in azimuth and expressed as a discontinuity trajectory, and the density of discontinuities was quantified as the sum of the lengths of discontinuities developed per unit area. The overall discontinuity trajectory in the study area is predominantly in the northeast direction, the north-south and east-west directions are dominant in the igneous rock distribution area, and the east-west and northeast directions are dominant in the sedimentary rock distribution area. Among the types of discontinuities, they show discontinuity trajectories similar to the northeast direction, which is the dominant orientation of stratum boundaries, stratification, and foliation. The discontinuity density ranges from 0.1 m^-1 to 1,000 m^-1. The density distribution of discontinuities was expressed in the form of discontinuity contour diagrams. As a result, the crushed rock near Demiseam in the southern and southwestern part of the study area, the igneous rock area around Maryeong-myeon, the igneous rock area near Yongdam Dam in the northeast, and the igneous rock area near Unilam and Banilam in the northwest showed the highest density of discontinuities at over 100m^-1., the sedimentary rock area near Maisan Mountain showed relatively low values. It suggests that the results of geophysical exploration and drilling survey data in the existing study area, as well as the geological structure and density and trajectory of discontinuities, may be important factors in the behavior of groundwater in rock mass in the future.

• The Journal of the Convergence on Culture Technology
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• v.10 no.5
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• pp.557-567
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• 2024

This study was a descriptived research study to determine the impact of empathy, communication competence, and personality on college adaptation among nursing students attending a university in City Y. The research method was a self-administered survey targeting 200 nursing students at a university in Y City, and data were collected from April 29, 2024 to May 27, 2024. The research statistical method used was the SPSS/WIN 25.0 statistical program, and was analyzed using t-test, one-way analysis of variance, Pearson correlation, and multiple regression analysis. In the correlation between each variable, college adaptation is related to empathy(r=.522, p<.001), communication competence(r=.557, p<.001), and personality(r=.561, p<.001). And as a result of regression analysis, as a factor affecting the subjects' college adaptation, second-year students(β=-.148, p=.013) had a higher level of college adaptation than first-year students(β=-.297, p<.001). Additionally, the level of college adaptation was high in the order of empathy(β=.295, p<.001), personality(β=.230, p<.001), and communication competence(β=.157, p=.050), and the explanatory power was 47.6%(Adj R2=.476, p<.001). Therefore, in order for nursing students to adapt to college, various psychological and emotional supports must be provided at the school and department level, and various customized programs that can improve empathy, communication competence, and personality should be developed and applied by considering the characteristics of nursing students by grade.

• The Journal of the Convergence on Culture Technology
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• v.10 no.5
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• pp.473-483
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• 2024

This study attempted to explore the operational experience of teachers in the extended class and the difficulties of teachers in the extended class for the implementation of play-oriented education in the extended class. The results of the interview analysis are as follows. First, I had a perception that the extended class teacher was an assistant teacher rather than a regular teacher. Second, since there is no separate classroom for extended classes, it helps teachers in charge of their absence rather than recognizing it as a sense of belonging and regular responsibility and cares for children without getting hurt. Third, teachers in the extended class put children's safety first with the care of mixed classes and the inconsistent return time of infants and toddlers. Fourth, most teachers were aware of the play-based curriculum and did not receive training, and most teachers said that it was impossible to implement the play-based curriculum in extended childcare. As a result, teachers in charge of the extended class need a guidebook for the extended class and an education and guidebook on the activity connection of the extended childcare class on what is the role of the teacher in charge of the extended class.

• Clean Technology
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• v.30 no.3
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• pp.228-238
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• 2024

Electrolytes are one of the essential components of a lithium-ion battery. They determine the battery's lifespan and cell characteristics. The dielectric constant is a key thermophysical property for determining how much salt can be dissociated and solvated in a solution. Hence, fast and reliable dielectric constant measurement is essential when formulating an electrolyte solution. This work implemented an open-ended coaxial probe (OECP) station as a quick and reliable tool to measure the complex permittivity spectra of electrolyte solutions. The capability of the OECP station was tested by measuring the complex permittivity of propylene carbonate (PC), dimethyl carbonate (DMC), and their mixtures from 0.1 to 8 GHz at 288.15, 298.15, and 308.15 K. The obtained dielectric spectra were then interpreted based on dielectric relaxation models and thermodynamic theories. The measured static dielectric constant data agreed well with the data from previous studies. They were also correlated using the Wang-Anderko thermodynamic model, showing approximately a 1% deviation from the experimental data. In addition, the relaxation characteristics, including the relaxation time and the Cole-Davidson exponent, showed that the microstructure of the solution significantly changes at the propylene carbonate mole fraction of 0.4. These results and methodologies are expected to contribute to the further understanding of electrolyte solutions and ultimately lead to the optimization of electrolyte formulation for lithium-ion batteries.

• Journal of Korean Home Economics Education Association
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• v.22 no.3
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• pp.163-188
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• 2010

This study set out to develop and evaluate an educational program for the Clothing Life of Home Economics through the theme-based integrated approach develop integrated thinking abilities for solving everyday problems. For those purposes, it selected a couple of themes in the area of Clothing Life toward which the theme-based integrated approach could be develop and evaluate an educational program. The developed program was applied and assessed in total 28 hours of field lessons given to eighth graders attending B Middle School in Busan Metropolitan City. The analysis stage involved an exploration into programs related to an integrated approach to other subjects; the design stage identification of program types; and the development stage theme selection according to the selection criteria. The previous studies were analyzed along with the Technology and Home Economics textbooks to select a theme. two themes "Clothing Management" and "Fabrics(Materials)" were selected after discussing with the students on the Messenger and with a group of experts. Then content was organized and composed around the themes by discussing connections with other subjects. There were three evaluation; one by experts, another through preliminary lessons, and the other through field lessons. Following the research procedure, a theme-based integrated program was developed for the two selected themes. It contained total 49 and 32 learning materials for "Clothing Management" and "Fabrics(Materials)," respectively. Those learning materials were comprised of experiments and practices according to the nature of the themes. Each program consisted of the goals, learning content, content organization chart, learning activities, and evaluation; learning activities experiences, practice and experiment activities, self-directed activities and problem-solving processes; and evaluations self-evaluation, teacher evaluation, peer evaluation, portfolio, and experiment reports. The program was assessed three times. The first and second evaluation results found that the program was well compatible with the current needs, was properly organized to give lessons through integration with other subjects, and continuously maintained the students' interest. They, however, requested that there should be detailed explanations about each part of the program content. In the third evaluation done by the students during field lessons, 60% of them said that the program was fun and its content was easy to understand, that they realized a theme could be connected to several other subjects, and that the program could be applied to actual life. The educational program through the theme-based integrated approach is significant in that it is an educational program for the area of Clothing Life and tries an integrated approach. It helped the students not only gather knowledge in an integrated manner, but put it to practical uses to solve various problems they faced in actual life by creatively changing integrated knowledge. The study will be hopefully used by many teachers so that the students solve problems based on the ability of integrating various knowledges organically.

• Pediatric Infection and Vaccine
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• v.19 no.3
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• pp.121-130
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• 2012

Purpose : The purpose of this study is to investigate clinical features and causative organisms in febrile infants younger than three months, to help identification of high risk patients for serious bacterial infection (SBI). Methods : A total of 313 febrile infants younger than three months, who had visited Seoul National University Children's Hospital from January 2008 to December 2010 were included. Clinical features, laboratory findings, causative organisms, and risk factors of SBI were analyzed by retrospective chart review. Causative bacterial or viral pathogens were identified by gram stain and cultures, rapid antigen tests, or the polymerase chain reaction from clinically reliable sources. Results : Among 313 infants, etiologic organisms were identified in 127 cases (40.6%). Among 39 cases of bacterial infections, Escherichia coli (66.7%) and Streptococcus agalactiae (12.8%) were common. Enterovirus (33.7%), respiratory syncytial virus (19.8%), and rhinovirus (18.8%) were frequently detected in 88 cases of viral infection. Patients with SBI (39 cases) showed significantly higher values of the white blood cell count ($14,473{\pm}6,824/mm^3$ vs. $11,254{\pm}5,775/mm^3$, P=0.002) and the C-reactive protein ($6.32{\pm}8.51mg/L$ vs. $1.28{\pm}2.35mg/L$, P<0.001) than those without SBI (274 cases). The clinical risk factors for SBI were the male (OR 3.7, 95% CI 1.5-8.9), the presence of neurologic symptoms (OR 4.8, 95% CI 1.4-16.8), and the absence of family members with respiratory symptoms (OR 3.6, 95% CI 1.2-11.3). Conclusion : This study identified common pathogens and risk factors for SBI in febrile infants younger than three months. These findings may be useful to guide management of febrile young infants.

• Journal of the Korean Association of Geographic Information Studies
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• v.22 no.4
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• pp.116-130
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• 2019

In South Korea, forest fire occurrences are increasing in size and duration due to various factors such as the increase in fuel materials and frequent drying conditions in forests. Therefore, it is necessary to minimize the damage caused by forest fires by appropriately providing the probability of forest fire risk. The purpose of this study is to improve the Daily Weather Index(DWI) provided by the current forest fire forecasting system in South Korea. A new Fire Risk Index(FRI) is proposed in this study, which is provided in a 5km grid through the synergistic use of numerical weather forecast data, satellite-based drought indices, and forest fire-prone areas. The FRI is calculated based on the product of the Fine Fuel Moisture Code(FFMC) optimized for Korea, an integrated drought index, and spatio-temporal weighting approaches. In order to improve the temporal accuracy of forest fire risk, monthly weights were applied based on the forest fire occurrences by month. Similarly, spatial weights were applied using the forest fire density information to improve the spatial accuracy of forest fire risk. In the time series analysis of the number of monthly forest fires and the FRI, the relationship between the two were well simulated. In addition, it was possible to provide more spatially detailed information on forest fire risk when using FRI in the 5km grid than DWI based on administrative units. The research findings from this study can help make appropriate decisions before and after forest fire occurrences.