• The Journal of the Convergence on Culture Technology
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• 제8권5호
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• pp.161-169
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• 2022

The purpose of this study performed to confirm the effect of caffeine intake and stress on sleep quality of college students. Research respondents and data collection were conducted on 269 college students through Google questionnaires from February 14 to March 13, 2022, and the research design is a descriptive survey study. Statistical analysis was performed using the SPSS 27.0 version as t-test and one way ANOVA. As a result of the study, it was found that most college students consume more caffeine than the average daily caffeine intake of Korean adults, although it is far below the recommended daily caffeine intake of Korean adults. The quality of sleep of college students is stress (r=.32, p=<).001) and caffeine intake (r=.204, p=.001). It was found that there was a positive correlation. Factors affecting sleep quality are body mass index (β=.1.19, p<.001) Stress (β=.3.37, p<.001), smoking (β=-.18, p=.001), caffeine intake (β=.15, p=.005) It was in order, and the explanatory power of the model was 24.8%.

• Journal of the Korean BIBLIA Society for library and Information Science
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• 제33권3호
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• pp.239-265
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• 2022

The purpose of this study is to examine the status of RDA adoption in Korea and the perception of university librarians on RDA adoption. For this purpose, the adoption status of two libraries that adopted RDA among domestic libraries was analyzed. In addition, interviews were conducted with eight university librarians, and narrative responses related to the adoption of RDA were collected and analyzed. As a result of the interview survey, the research participants recognized that the concept of RDA is very difficult and abstract, there are few implementation cases where RDA is applied, and that it would be very difficult to adopt RDA due to the personnel and budget conditions of the local library. The RDA adoption method recognized by the research participants is to improve RDA awareness, conduct RDA education, prepare guidelines for constructing hybrid bibliographic records when RDA is adopted, operate an RDA pilot institution, and establish a performance model. In addition, research participants need coordination with companies for implementation, prefer to change a specific point in time rather than batch retroactive conversion, discover success stories, establish RDA-related online channels, build and utilize national authority DB, and use the national budget and system support. In this study, based on the research results, a plan to adopt RDA for university libraries in Korea was presented.

• The Mathematical Education
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• 제61권3호
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• pp.419-439
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• 2022

This study is based on Freudenthal's mathmatising process and the didactical phenomenology of linear function concept, I have described and examined the process in which students represent the constant rate of change into tables, graphs and equations and, in this way, how they construct mental objects and essence of the linear function concept. The students used the proportionality as composite units, when they represented the phenomenon with constant rate of change into tables. When representing in graphs, all but one student represented it into a line. There were differences among the students in the level they were using the given conditions, co-variation perspective, and corresponding rules when formulating equations. The students compared the relationship between two variables in a multiplicative way, and under the guidance of teachers they reached to the understanding that its relationship becomes a constant. Moreover, they could construct mental objects of a constant rate of change, understanding the situation where the relationship between time difference and distance difference becomes one value, namely speed. The students had difficulties in connecting the rate of change with the inclination of a line. The students constructed the essence (concept) of linear functions, after building and organizing the image that the rate of change is constant, the graph is linear, and the equation is formulated as y=ax+b (a: inclination, b: intercept).

• Journal of the Korea Society of Computer and Information
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• 제27권10호
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• pp.255-265
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• 2022

We compared and analyzed the factors affecting the lecture evaluation of IT subjects, which are mandatory for all students of H University. The purpose of this study is to determine whether lecture satisfaction has a significant correlation with academic achievement, attendance rate, and categories of courses. In this study, we check whether the lecture satisfaction of IT liberal arts subjects that require a lot of computer-based practice differs from that of other liberal arts subjects. We used the 2,149 evaluation data of 12 lectures submitted by 2,322 students in the first and second semesters of year 2019 at University H. As for the lecture evaluation results, in addition to the evaluation scores of the multiple choice questions, the subjective questions were also quantified by classifying the statements submitted by the students into positive and negative types to make the results of the lecture evaluation objective. Our research results show that student group who have the higher attendance rates and academic achievements have higher level of lecture satisfaction and they also use more positive words than negative words in subjective evaluation questions. Students with the lower score use the more negative words, but the ratio between positive and negative words does not differ between groups. Higher attendance rates groups in the basic programming courses and software applications courses have higher lecture satisfaction ratio. But in the intermediate programming courses, the higher attendances rate and the lecture satisfaction do not have any significant relationship. Also students in the intermediate programming courses use more negative words than those in the basic programming courses.

• Journal of Industrial Convergence
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• 제20권11호
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• pp.149-155
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• 2022

This study conducted a descriptive research to compare the degree of patient safety culture awareness among general hospitals and long-term care hospital nurses. The subjects of this study were 150 nurses who worked for more than 6 months at 2 general hospitals and 4 long-term care hospitals located in 3 cities, the data has collected from October to December 2021. To Measure patient safety culture, the patient safety culture measurement tool developed by Soon Gyo Lee was used. Data were analyzed by 𝑥²-test, ANOVA, and t-test using SPSS 20.0 program. As a result of the study, the variables with high patient safety culture were the nurse's age(F=44.17, p=.000), clinical career(F=62.86, p=.000), and current workplace career(F=26.27, p=.000). Among the subdomains of patient safety culture, leadership(t=2.07, p= .040) and patient safety priorities(t=2.18, p=.031) were found to be higher in long-term care hospital nurses than general hospital nurses. Based on this result, we expected that it can be used as data in developing programs to raise the level of patient safety culture in hospitals and long-term care hospitals.

• Journal of the Korean Society of Earth Science Education
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• 제16권1호
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• pp.30-42
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• 2023

The purpose of this study is to quantitatively and qualitatively analyze the science journals written by pre-service elementary school teachers, and to categorize the view on the nature of science and the process of their change. For this purpose, 112 science journals written by 13 pre-service elementary school teachers were analyzed. The frequency of each area was analyzed using the research framework of the four areas of the nature of science, and the pattern of change in perspective on the nature of science was inductively derived and classified using the VNOS-C test analysis framework. As a result, The nature of scientific thinking, nature of scientific knowledge, nature of STS, and nature of scientific inquiry were described in relatively similar proportions, but among them, The nature of scientific thinking appeared in the largest percentage, and the nature of scientific inquiry was described in the smallest percentage. The variability of scientific knowledge, the importance of empirical evidence, and the positive and negative effects of science were especially intensively addressed. In addition, the changing aspects of pre-service elementary school teachers' perspectives on the nature of science could be categorized into 'naive view maintenance type', 'informed view maintenance type', 'regression type', 'development type', and 'mixed type'. The element of 'the empirical nature of scientific knowledge' showed various patterns of change depending on the students, and most of the students maintained a informed view on the tentativeness of scientific knowledge for several sessions.

• Journal of the Korean Applied Science and Technology
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• 제40권1호
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• pp.48-58
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• 2023

This study is a descriptive survey research on nursing workers at long-term care hospitals, who are largely divided into nurses and nurse aides, to identify the factors that affect their turnover intention. From August 12 to 16, 2022, the survey was conducted for 146 nursing workers in four long-term care hospitals located in G city. The survey results indicated that there were differences in their turnover intention depending on their age, religion, marital status, educational level, average monthly salary, job type, duty pattern and turnover experience, of all general characteristics (p<.05). Turnover intention had a significant positive correlation with job stress (r=.51, p<.001) and burnout (r=.62, p<.001), and had a significant negative correlation with organizational commitment (r=.-56, p<.001). Organizational commitment had a significant negative correlation with job stress (r=-.25, p=.002) and burnout (r=.-.67, p<.001), while burnout had a significant positive correlation with job stress (r=.56, p<.001). Factors influencing the nursing workers' turnover intention included job stress (β=.32, p<.001), organizational commitment (β=-.30, p=.001) and education level (β=.17, p=.022), with an explanatory power of 49.6%. Based on the results of this study, it is considered that efforts to improve the working environment for nursing workers at long-term care hospitals are needed by reducing their job stress and improving organizational commitment in order to reduce their turnover intention.

• Journal of the Computational Structural Engineering Institute of Korea
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• 제36권4호
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• pp.213-220
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• 2023

This paper presents a model simulating the folding process and collision dynamics of "ddakji", a traditional Korean game played using paper tiles (which are also referred to as ddakji). The model uses two A4 sheets as the base materials for ddakji. The folding process involves a series of boundary conditions that transform the wing part of the paper structure into a twisted configuration. A rigid plate boundary condition is also adopted for squeezing, establishing the shape and stress state of the game-ready ddakji through dynamic relaxation analysis. The gaming process analysis involves a forced displacement of the striking ddakji to a predetermined collision position. Collision analysis then follows at a given speed, with the objective of overturning the struck ddakji--a winning condition. A genetic algorithm-based optimization analysis identifies the optimal collision conditions that result in the overturning of the struck ddakji. For efficiency, the collision analysis is divided into two stages, with the second stage carried out only if the first stage predicts a possible overturn. The fitness function for the genetic algorithm during the first stage is the direction cosine of the struck ddakji, whereas in the second stage, it is the inverse of the speed, thus targeting the lowest overall collision speed. Consequently, this analysis provides optimal collision conditions for various compression thicknesses.

• Journal of Digital Convergence
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• 제21권2호
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• pp.33-40
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• 2023

In this study, we aim to examine the impact of corporate social responsibility implementation, which is a major concern in previous research, on investment efficiency. The research method will be a qualitative study with reference to existing previous research. The three main claims to be addressed in this study will be summarized, and the research variables and research models will be described. As a result of the study, based on existing previous research, this study presented three issues to examine how a high level of corporate social responsibility performance increases investment efficiency. First, we argue that a company's high level of social responsibility will be positively related to investment efficiency. Second, it is argued that investment efficiency will be positively related to individual CSR components that represent the interests of primary stakeholders. Third, it is argued that companies with too high a CSR index and companies with a too low CSR index will have less correlation with investment efficiency. The contribution of this study will be to more accurately understand the impact of CSR on corporate investment efficiency. In the future, it is hoped that additional discoveries will be made through research that adopts the three claims presented in this study as hypotheses and empirically analyzes them. The Journal of Digital Policy & Management. This space is for the abstract of your study in English.

• Journal of the Korean Applied Science and Technology
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• 제40권3호
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• pp.392-401
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• 2023

This study was to identify the association between osteoporosis knowledge and performance of osteoporosis preventive behaviors among low-income middle-aged women, and to determine the impact of these variables on osteoporosis preventive behaviors. The subjects were 317 middle-aged women from low-income who visited three general hospitals in P city, and data were collected from February 1, 2021 to December 30, 2022 using structured questionnaires. The collected data were analyzed by descriptive statistics, t-test, ANOVA, Pearson's correlation, and Stepwise multiple linear regression using SPSS/WIN 27.0 program. As a result of the study, the osteoporosis knowledge of the subjects was low at 11.97±6.89 points, which showed a difference in the case of osteoporosis prevention education, fracture experience. The osteoporosis prevention behavior was low at 41.03±7.63 points, which showed a difference according to religion, comorbidity, osteoporosis prevention education and fracture experience, and subjective health status. There was a statistically positive correlation between osteoporosis knowledge and osteoporosis prevention behavior(r=.527, p<.001), and the factors affecting osteoporosis prevention behavior were fracture experience(𝛽=.415, p<.001), osteoporosis prevention education(𝛽=.359, p<.001), and self-rated health(𝛽=.186, p<.001). Therefore, it is necessary to develop a program that can promote osteoporosis prevention behavior of middle-aged women in low-income and to prepare measures to encourage participation.