• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.7
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• pp.310-316
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• 2019

In automotive application, customers are demanding high efficiency and various functions for convenience. The demand for these automotive applications is steadily increasing. In this study, it has been studied the analysis of heat flow to improve the PCB(printed circuit board) heating performance of WPC (wireless power charger) recently developed for convenience. The charging performance of the wireless charger has been reduced due to power dissipation and thermal resistance of PCB. Therefore, it has been proposed optimal PCB design, layout and position of electronic parts through the simulation of heat flow analysis and PCB design was analyzed and decided at each design stage. Then, the experimental test is performed to verify the consistency of the analysis results under actual environmental conditions. In this paper, The PCB modeling and heat flow simulation in transient response were performed using HyperLynx Thermal and FloTHERM. In addition, the measurement was performed using infrared thermal imaging camera and used to verify the analysis results. In the final comparison, the error between analysis and experiment was found to be less than 10 % and the heating performance of PCB was also improved.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.7
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• pp.607-612
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• 2019

The softness of the crashpad part is one of the important factors which affect the interior perceived quality of the vehicle interior. And while improving the softness of the crashpad part, every effort to lower the production cost has been going on. The PU foaming process for the crashpad part depends on the understanding of a lot of processes, tools and material properties. Therefore, to achieve the requirement of the customer for the interior part's visual quality, the integrated design techniques are investigated to correlate the processes, tool design, material design and the computer aided analysis. In this paper, IMG (In Mold Grain) designed concept is firstly developed to integrate the skin preforming, plastic injection molding of the substrate and the foaming process in a tool within reduced processes. Through the application of this technology, softness of crashpad is improved by 40% compared to the conventional vacuum molding method, and the existing process is reduced by 50% by integrating the injection process and the manufacturing process. And by integrating the injection mold and the skin mold and removing the foaming mold, the number of molds are reduced from 3 to 1, resulting in 20% reduction in the cost of applying a medium-sized passenger car.

• Journal of Digital Convergence
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• v.20 no.2
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• pp.525-541
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• 2022

This study aimed to develop simulation practice program with PBL (S-PBL) for nursing students and evaluate the effect of the program on their problem solving ability, clinical performance competency, learning satisfaction and confidence. The participants were nursing students who applied for simulation practice courses at an university in J province. The study was a mixed-method design using a nonequivalent one group pretest-posttest design (n=91) and focus group interview (n=12). Quantitative data were analyzed using SPSS 23.0 program and qualitative data thematic analysis. Quantitative data showed S-PBL was effective in improving clinical performance competency, learning satisfaction and confidence of the participants, but not in improving problem solving ability. As a result of the qualitative study, four themes and eight sub-themes were derived, and the themes were "Learn integrated nursing care based on priority", "Experience team cooperation through communication," "Learn vividly critical care" and "Improved nursing competency". The S-PBL could be effective in practical education for nursing students. In further study, it is necessary to develop various simulation practice programs based on PBL through a mixed-method design and apply them to nursing curriculum.

• The Journal of the Convergence on Culture Technology
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• v.9 no.1
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• pp.355-360
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• 2023

Recently, with the development of digital, children are exposed to a lot of media media. Reading activity decreases, making it difficult to acquire information from books or organize and remember acquired information. Since education with augmented reality increases children's participation and immersion in learning, we proposed a reading activity application with augmented reality technology to increase children's reading interest and creativity. In addition, based on the five nurturing processes, we designed a play-oriented reading activity for the application. In addition to the application suggestions, we designed a play-centered lesson model so that it can be used in actual lessons. In order to analyze the conceptual thinking framework according to the lesson model design, we visited an actual daycare center and conducted a class attended by an expert. Experts who participated were asked to fill out a pre-produced questionnaire to review the suitability of the reading activity class model and operation, and the feasibility was examined. Our lesson model design was based on limited book content, and due to ethical concerns, large-scale experiments with children could not be conducted, so the results of the study are not representative of the whole. However, it is significant that the possibility of running a new reading activity class based on the Nuri course has been examined and proposed.

• Journal of Digital Convergence
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• v.14 no.5
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• pp.403-410
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• 2016

Computer game is a result of integration of various academic areas, and the production of computer game requires knowledge and experience from various areas. This study demonstrates a game production process using Scratch. The intent was to experience the game development process and the production principle through actually building the core functions of a game using Scratch. As such, the computer game production principle was understood and it was made possible to learn more easily and more enjoyably the functions of multimedia and programming necessary for the production process. As the result, the learning of game production principles using Scratch was found to enhance the interest of the learner, and help with the understanding of game structure and learning software/programming language.

• Journal of Digital Convergence
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• v.14 no.5
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• pp.349-358
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• 2016

This study identifies the relationships between professional values, bioethics and death ethic perception in Korean nursing students. The study included 284 nursing students. Data was obtained through convenient sampling, adopting a cross-sectional design methodology. Professional values among nurses were significantly different according to occupational view (p<.001), ethical perception (p<.001) and ethical values (p<.001). Death ethic perception was significantly different based on ethical education (p<.05) and ethical values(p<.05). Positive correlations were found between nursing professional values, bioethics and death ethic perception, death ethic was significant predictors of professional values with an explanatory power of 15.0%. The findings of this study may assist in providing a detailed understanding of values among Korean nursing professionals, bioethics and death ethic perception.

• Journal of Digital Convergence
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• v.11 no.12
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• pp.523-535
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• 2013

Purpose: This study was to investigate the socio-demographic and health factors affecting on the health related quality of life (HRQoL) in elderly by gender. Methods: Data of the study were derived from the fifth Korean National Health and Nutrition Examination Survey (KNHANES V-2, 2011). The subjects were older adults aged 65 years or more (673 male and 925 female) and the number of the sample was 1,598. The authors analyzed the data with the SPSS/WIN 21.0 program. Results: For male, the affecting factors on the HRQoL were education level, monthly income, and number of chronic disease. For female, affecting factors on the HRQoL were depression, stress, and age. The activity limitation and subjective health showed statistically significant relationship with the HRQoL for both male and female. Conclusion: Health care providers should consider the gender difference when they plan to design program for the improvement of HRQoL for elderly in community.

• The Journal of the Korea institute of electronic communication sciences
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• v.15 no.1
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• pp.185-190
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• 2020

The rapid aging is increasing as the shortage of medical facilities and the resulting of decline in the quality of public health. In order to ease the burden of rising medical expenses, advanced medical institutions are expanding their remote medical care to lower the cost of services. U-healthcare detects the changes in physical and chemical phenomena occurring in the human body and converts them into electrical signals that can be processed and feeds back to the results through analytical and visualization processes to select only the desired information from the measured signals. The service is provided through a process of providing an alarm to a user. However, traditional biometric methods of attaching sensors directly to the body can be annoying and rejected in daily life. Therefore, there is a need for a method of continuously measuring biometric information without causing inconvenience to daily life. In this paper, we propose an IR-UWB-based non-contact and non-responsive respiratory measurement system that can continuously monitor biological information without any inconveniences to daily life.

• The Journal of the Convergence on Culture Technology
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• v.3 no.4
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• pp.83-92
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• 2017

The purpose of this study to investigate about the structure of Nursing students' thinking about job. The phenomenology study design and Giorgi method were used for this analysis. The subjects were 10 people between undergraduate 20-30 years of age and were interviewed over a total of four times. The result of this study were as follow; there were 3 structures and 14 factors such as "the better life" "future" "make a living" "affect to own family" "new starting" "independent" "closely relationship" "depth information that is self-learning" "proportion between class and job" "integrated learning manual are required" "job competition is little hard" "much in demand and various sectors" "hard and difficult nursing licence examination" "the hope of the more better life". According to the results of this study, nursing students' thinking about job were 3 structures which were the impact of employment, practical training necessary and hard but withstand. Therefore through this study appropriate education research and objective including practical contents practice manual development are suggested.

• Journal of Digital Convergence
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• v.16 no.8
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• pp.253-261
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• 2018

The purpose of this study was to examine the predictive relationships between the predictors and self-esteem among hemodialysis(HD) patients. Predictive correlational design, participants 154 HD patients in the Seoul. SPSS for Window 22.0 used to perform descriptive statistics, Pearson's Correlation Coefficient and Stepwise Regression analysis. The strongest predictor was uncertainty (${\beta}=-.33$, p<.001), economy (${\beta}=.18$, p<.05), occupation (${\beta}=.17$, p<.05) and health status (${\beta}=.16$, p<.05) were followed. A total explained variance was 30.0% of self-esteem (Adjust $R^2=.30$). Managing or preventing uncertainty, providing vocational education in consideration of the dialysis environment, providing employment, increasing economic level, and maintaining good health status are factors that enhance self-esteem. Conducted to investigate the self-esteem of HD patients considering the machine-dependent characteristics, future, provide the data of the study to improve the self-esteem of HD patients. Also, nursing intervention should be developed based on the findings.