• Journal of Convergence for Information Technology
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• v.11 no.10
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• pp.60-67
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• 2021

The purpose of this study is to investigate the effect of online psychiatric nursing practicum including virtual simulation on goal commitment, self-efficacy, critical thinking disposition, and problem solving ability of nursing students in the COVID-19 situation with difficult clinical practice. The subjects of this study were collected using an online questionnaire for third-year nursing students located in A city, and 31 students participated in the final. The results of this study showed that goal commitment and critical thinking disposition were improved in the post-test compared to the pre-test, but were not statistically significant. Self-efficacy (t=4.222, p<.001) and problem solving ability (t=6.807, p<.001) were signifincantly improved after than before online practicum. This findings indicate that online psychiatric nursing practicum including virtual simulation is effective in improving self-efficacy and problem solving ability. As it is difficult to perform nursing practice directly in the clinical field due to the recent COVID-19, it is expected that the limitations of online practicum can be overcome by utilizing various online contents including virtual simulations in online psychiatric nursing practicum.

• The Journal of Bigdata
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• v.6 no.1
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• pp.145-151
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• 2021

In recent years, digital data has been generated in all areas of human activity, and there are many attempts to safely store and process the data to develop useful services. A data lake refers to a data repository that is independent of the source of the data and the analytical framework that leverages the data. In this paper, we designed a tool to safely store various big data generated by smart cities in a data lake and ETL it so that it can be used in services, and a web-based tool necessary to use it effectively. Implement. A series of processes (ETLs) that quality-check and refine source data, store it safely in a data lake, and manage it according to data life cycle policies are often significant for costly infrastructure and development and maintenance. It is a labor-intensive technology. The mounting technology makes it possible to set and execute ETL work monitoring and data life cycle management visually and efficiently without specialized knowledge in the IT field. Separately, a data quality checklist guide is needed to store and use reliable data in the data lake. In addition, it is necessary to set and reserve data migration and deletion cycles using the data life cycle management tool to reduce data management costs.

• Journal of Korean Society of Disaster and Security
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• v.14 no.2
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• pp.51-59
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• 2021

Due to recent climate change, the flood damage is becoming larger due to the development of localized heavy rains. 2020.12 The Ministry of Environment provides 100-year flood flood map, but in the case of small rivers, river structures are designed at 50-80 years frequency, making it difficult to predict damage and provide evacuation information. This study prepared flood map of Donamcheon district in Geumnam-myeon, Sejong Special Self-Governing Province, which is a small stream and habitual flood zone. The flood level was calculated using HEC-RAS and the flood area was visualized through HEC-GeoRAS. The analysis results showed that property damage such as special crops and roads occurred during the 30-80 year frequency rainfall, and it affected private houses such as general residential areas and public land when the frequency occurred for 100 years. The results of the comparison and analysis of the flood map provided by the Ministry of Environment and the results of the HEC-GeoRAS simulation showed that the flood map provided by the Ministry of Environment did not consider small streams. Further studies on flood flood maps considering the large and small stream are needed in the future.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.22 no.5
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• pp.89-97
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• 2021

The purpose of this study was to examine the awareness of early childhood teachers for early childhood creativity programs using physical computing in an effort to provide future direction for program development. The findings were as follows: First, 43.8 percent of teachers answered they were neutral about the need for these programs, while 40.5 percent replied these programs were necessary. Second, 73.8 percent thought the utilization of physical computing tools would be useful. Third, the largest group thought that the programs should be provided for five-year-olds. Regarding the frequency of programs, once or twice a week were considered most appropriate. Concerning the length of each activity, 20 to 30 minutes was identified as ideal, and study subjects preferred small group activities. In regard to the most effective theme for these programs, tools for daily life were considered best. As for educational content to be included in program planning, scientific inquiry and experiment were viewed as best, followed by the design/ production/utilization of creative works, game and play, and producing and playing musical instruments. Evaluation by a creativity test was chosen as the most desirable evaluation method.

• Journal of Convergence for Information Technology
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• v.11 no.12
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• pp.138-147
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• 2021

This study aims to analyze the characteristics and preferences of learners who participated in college online classes for effective online learning. A total of 101 college students who participated in online classes completed the survey including personal characteristics of students and learning factors that affect online classes. The results showed that male students were more likely than female students to respond that online classes were more effective. Likewise students who learned from video recordings compared to those who learned from real-time lectures. As a result of analyzing the difficulties of online learning, there was a high probability that online learning was ineffective for students who had difficulties in self-learning and asking questions to their lecturers. Likewise, students who spent a lot of time studying online lectures, there was a high probability that online classes would be more effective for students who spent a lot of time on assignments. The results suggest that online learning is more effective for students who learn actively and self-directedly than those who passively participate in classes. This study implies that it is necessary to design online classes based on the characteristics and preferences of learners to improve the quality of education.

• Journal of vocational education research
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• v.37 no.4
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• pp.1-22
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• 2018

The study tried to investigate the school curriculum organization and teacher's perceptions about test subjects in vocational education division of the college scholastic ability test based in the 2015 revised national curriculum. This study asked vocational teachers to fill in basic questionnaire that consists of 9 relevant and subjective items for the school curriculum organization and test subjects in vocational education division of the college scholastic ability test based in the 2015 revised national curriculum. For this, the survey was conducted 58 schools of 92 schools in technical specialized high schools, meister high schools and vocational high schools about test subjects of 2015 revised national curriculum. As a result, the 'Successful career life' subject was 53.5%, the most organized in the first grade. 'test course 1' was 55.2% and 'test course 2' was 72.4% the most organized in the first grade. The Opinions on the test courses were the highest in the two subjects in the same series as the present. The teacher's perceptions showed that the current test subjects in vocational education division of the college scholastic ability test are valid. The most important factor affecting difficulty was 'The Ministry Education's policy' in vocational education division of the college scholastic ability test.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.11
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• pp.166-181
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• 2018

The aim of this review was to determine the status of acupuncture therapies in reducing obesity in obese patients and to determine the scheme and effectiveness of acupuncture therapies. Existing reports published between January 1, 2003 and December 31, 2017 in Kiss, Riss, National Assembly Library, Pubmed and CINAHL databases were searched electronically with the keywords obesity, acupuncture, auricular acupuncture, and electroacupuncture. After checking the original sources of the articles, 19 articles were included in the review. In a qualitative evaluation of the papers using a checklist from the Scottish Intercollegiate Guideline Network, one study scored 9 out of 10 points, 15 studies scored 7-8 out of 10 points, two studies scored 6 out of 10 points, and one study scored 3 out of 10 points. In the acupuncture therapy schemes, acupoints to reduce obesity included shemen, hunger, LI-11 (Quchi), LI-4 (Hegu), St-25 (Tianshu) and St-44 (Neiting). Acupuncture therapies were conducted for an average of 16.9 total sessions. In the studies that involved 20-day or 72-day duration for acupuncture therapies, the frequency of acupuncture therapies was 1 time/1-2 days. In the studies that involved 4- to 18-week duration for acupuncture therapies, the frequency of acupuncture therapies was 1-3 times/week. This study found acupuncture therapies were effective in reducing obesity, and acupuncture therapies reduced anthropometry, blood glucose and lipids and changed blood hormones. In the future, there is an urgent need for well-planned studies of the effectiveness of acupuncture therapies for reducing obesity in obese patients.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.8
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• pp.15-22
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• 2019

Awireless sensor network utilizes small sensors with a low cost and low power being deployed over a wide area. They monitor the surrounding environment and gather the associated information to transmit it to a base station via multi-hop transmission. Most of the research has mainly focused on static sensors that are located in a fixed position. Unlike a wireless sensor network based on static sensors, we can exploit drone-based technologies for more efficient wireless networks in terms of coverage and energy. In this paper, we introduce a transmission power model and a video encoding power model to design the network environment. We also explain a priority mapping scheme, and deploy drones oriented for network coverage and energy consumption. Through our simulations, this research shows coverage and energy improvements in adrone-based wireless sensor network with fewer sensors, compared to astatic sensor-based wireless sensor network. Concretely, coverage increases by 30% for thedrone-based wireless sensor network with the same number of sensors. Moreover, we save an average of 25% with respect to the total energy consumption of the network while maintaining the coverage required.

• Journal of Korea Technology Innovation Society
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• v.22 no.1
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• pp.28-49
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• 2019

This paper explores the characteristics of innovation activities in high growth firms that contribute to national and regional economic growth and job creation. The analysis is based on the 2016 KIS data to analyze the difference in innovation activities between high growth firms and general firms. The main results are as follows: First, high growth firms have a higher proportion of R&D personnel than general firms. Second, high growth firms are actively introducing product innovation, process innovation, and organizational innovation as compared to general firms. In the innovation activities related to product innovation and process innovation, there is no statistically significant difference between high growth companies and general companies except for external R&D. Third, High growth firms are more likely to cooperate with other technology partners than general firms. But, there is no statistically significant difference between high growth firms and general firms in the external knowledge search and the diversity of cooperating partners. Fourth, in terms of protecting innovation, high growth firms are more likely to use all kinds of innovation protection method, such as 'utilizing intellectual property rights', 'maintaining confidentiality', 'adopting complex design methods', 'market preemption ahead of competitors', and the most important means is the intellectual property rights. Fifth, government innovation policies that high growth firms chose as important are 'innovation subsidies and loans', 'acquirement, utilization and protection of intellectual property rights' and 'human resource support'.

• Journal of Korea Technology Innovation Society
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• v.22 no.3
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• pp.362-381
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• 2019

The purpose of this study is to examine how two factors among various affecting factors of technological innovation, i.e. sectoral system of innovation and R&D support service, were actually applied in the case of NUC Electronics. This company has achieved high level of innovation performance through change of injection port and improvement of extracting rate. This was possible because each component of sectoral system of innovation system was matched with the innovation activity. The improvement of the performance in NUC Electronics was attributable to its own innovation efforts and R&D support service of government research institute. In the process of technological innovation, the company could receive high-level services in areas such as product design and virtual experiments that companies can not solve themselves. It can be said that the role of government and public institutions to support the shortage of SMEs was important. In terms of each component of sectoral system of innovation, we found that there were many opportunities of new technology; sustainability was low; imitation was easy; appropriability was low but it has dualily; accumulation of technology was relatively high, availability of external knowledge was high. At the same time, both of the company and the network played an important role, and market conditions were very favorable. In terms of R&D support services, it is a direct effect that a great deal of time and cost savings have been achieved through virtual experiments on the material and shape of the screw. As an indirect effect, the core competence of the company has been greatly strengthened by utilizing the momentum of technology development through external support, hence the company could establish the structure of virtuous circle of innovation.