• Journal of Convergence for Information Technology
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• v.11 no.1
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• pp.167-174
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• 2021

The purpose of this study is to examine the effect of computational thinking course on learning flow and collaborative self-efficacy of university students and to explore the effectiveness of computational thinking course as liberal arts education. For this study, 177 freshmen at a university in Chungnam Province were surveyed learning flow and collaborative self-efficiency. The collected data were analyzed with Stata IC 14 for ��2 test and t-test. The results of this study are as follows. First, the learning flow of students who took computational thinking course were significantly higher(t=3.837 p<.001) compared to those who did not. Second, the collective self-efficiency of students who took computational thinking course were significantly higher(t=2.277 p<.01) compared to those who did not. Therefore the results show that computational course has positive effects on learning flow and collaborative self-efficiency of university students. Based on these findings, discussions and implications were presented on the importance and effectiveness of computational thinking course.

• Journal of Convergence for Information Technology
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• v.11 no.2
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• pp.57-63
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• 2021

This study examined the effects of scenario-based education for patients with difficulty urination on nelaton knowledge, nelaton confidence, and nelaton catheterization skill ability of nursing college students. The data for this study were collected from May to June 2019, and were conducted for the third grade nursing students located in J city. A non-equivalent control group pretest-posttest design was used in 75 junior nursing college students subjects who were assigned to the experimental group 37 and the control group 38. The collected data was analyzed through the ��2-test, independent t-test and paired-test. There were significant differences in nelaton confidence(t=4.60, p<.001), nelaton catheterization skill ability(t=3.46, p=.001). But scenario-based education was found to be insignificant in the nelaton knowledge of nursing students. Difficulty urination scenario-based education can be used as an effective educational intervention to improve nelaton confidence and nelaton catheterization skill ability. However, in nelaton knowledge, it is necessary to verify the effectiveness of education through additional research.

• Journal of Convergence for Information Technology
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• v.12 no.4
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• pp.95-102
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• 2022

The purpose of this study was to compare the psychological state of nursing students according to classes in the face-to-face and non-face-to-face situations during COVID-19. Subjects were randomly expressed. As for the analysis method, the difference in the scores of the dependent variables between the two groups was analyzed by an independent t-test. As a result of the study, The degree of depression and anxiety between the two groups was higher in face-to-face students(8.16±9.48, 8.20±9.93) and non-face-to-face students(7.08±8.38, 6.53±8.23) but not statistically significant (t=1.143(.254), (t=1.728(.085)). These results are used for the basis for preparing a program for psychological relief for students participating in face-to-face classes, and a repeated study on psychological depression and anxiety among students is suggested in the future when social distancing is prolonged.

• Journal of Convergence for Information Technology
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• v.11 no.8
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• pp.62-72
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• 2021

The purpose of this study was to identify the influences of the communication capability, the interpersonal relationship satisfaction, and the feeling of self-efficacy of the middle aged men on their psychological feeling of well-being. The survey was performed on 208 employees of 5 ordinary corporations. Data were collected using a structured questionnaires and analysed with t-test, ANOVA, Pearson's correlation and hierarchical regression. Study findings revealed that the factors that had the influences on the psychological well-being of the middle-aged men were the communication ability(β=.23, t=3.07, p=.002) and self-efficacy(β=.44, t=6.91, p=.000). And the explanation power of the regression model appeared as being 59.4%(F=24.30, p=.000). The findings indicate the necessity of developing nursing intervention programs for the middle-aged men to improve psychological well-being by enhancing communication ability and self-efficacy.

• Journal of Convergence for Information Technology
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• v.7 no.4
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• pp.105-111
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• 2017

With the emergence of the fourth industrial revolution, more and more attempts have been made to apply IoT technology to the manufacturing process and launch the product. In this paper, we propose IoT authentication scheme based on hash chain which can easily apply IoT device to small and medium enterprises in Korea. In the proposed method, the companies that installed IoT devices suitable for the manufacturing environment are selected to maintain the linkage between IoT devices so that product information and release information can be efficiently collected and managed during the entire manufacturing process. In addition, the proposed scheme is characterized in that it does not require an additional encryption / decryption algorithm because the authentication information of the IoT device is constructed based on a hash chain. As a result of the performance evaluation, the efficiency of the manufacturing process was improved by 18.5% and the processing of the manufacturing process with the IoT device was shortened by 20.1% on the average according to the application of the IoT device. In addition, the labor cost reduction costs in the manufacturing process decreased by an average of 30.7%.

• Journal of the Korean Geotechnical Society
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• v.39 no.10
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• pp.5-18
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• 2023

The construction timeline for earthworks can be significantly reduced by substituting the conventional layer-by-layer compaction using a vibratory roller with single-layer compaction through the rapid impact compaction (RIC) method. Dynamic load compaction is well-suited for coarse-grained soils like sand. However, as the supply of sand, the primary reclamation material, becomes scarcer, the utilization of soil with fines is on the rise. To implement the dynamic load compaction, such as RIC, with reclaimed materials containing fines, it's imperative to determine the effective improvement depth. In this study, we assess the impact of the RIC method on the effective improvement depth for clean sand and public fill with fines, comparing field test results before and after RIC application. Our focus is on the cone resistance (q_c) as it pertains to compaction quality control criteria. In conclusion, it becomes evident that standardizing the cone resistance is vital for the quality control of various reclaimed soils with fines. We have evaluated the compaction quality control criteria corresponding to a relative density (Dr) of 70% for clean sand as Q_tn,cs = 110. As a result of this analysis, we propose new quality control criteria for q_c, taking into account the fines content of reclaimed soils, which can be applied to RIC quality control.

• Journal of Convergence for Information Technology
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• v.10 no.9
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• pp.79-87
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• 2020

The purpose of this study was to investigate the effect of flipped learning in ASP(after school program) on self-directed learning ability and learning motivation. This study used a one group pre test-post test design. Data derived from 35 person nursing students enrolled in after-school program between 17 December 2018 and 18 January 2019 at D university. The learner's self-directed learning ability increased, statistically differed differences(t=-4.04, p<.001) but, motivation increased there were no statistically significant differences(t=-1.08, p=.288). The average of ASP satisfaction scores for the program was 3.49 ± 0.93. Therefore, it is suggested that educators and schools organize their flipped learning methods in the curriculum to improve learners' self-directed learning ability.

• Journal of Convergence Society for SMB
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• v.6 no.2
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• pp.37-43
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• 2016

Due to the remarkable improvement of ICT, with the popularization of mobile devices and every sector of society connected by networks, an era, in which peer to peer, peer to thing, thing to thing can be connected to one another everywhere, has begun. As all the electronic devices are connected to Internet, they have become more intellectualized and automated, making convergence and process of information through the connection of the devices possible to provide a lot better services. However, those devices communicate mutually to send information and they are exposed to various security threats. Therefore, this study analyzes ZigBee, CoAP, MQTT, XMPP, which are communication-related technology of IoT, draws security threats they have, and suggests requirements that components of IoT should have. Plus, it examines real cases about security threats in IoT, and suggests a countermeasure so as to contribute to establishment of a basis for IoT to be used much more safely in the future.

• Journal of Convergence Society for SMB
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• v.6 no.3
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• pp.7-12
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• 2016

This paper aims to examine the adoption of several management tools & techniques(MT&T) by the Strong Small Business Enterprises (SSBE) in Korea, In addition, the paper examines the impact of the adopted MT&T techniques on a company's overall performance. The paper used a questionnaires survey method to gather the required data. The paper used descriptive statistics, correlation and regression techniques to analyze the data. The paper found that benchmarking, BSC, IMS and TQM are among the MT&T techniques widely adopted by SSBE. In addition, the paper found that the adoption of MT&T techniques significantly influenced the companies' overall performance. More specifically, the paper found that the adoption of BSC significantly influenced that the companies' profitability, customer satisfaction, market position and sales growth for exisiting services and products. The findings this paper provide could be considered important and useful for advancement of companies adopting MT&T techniques to improve their performance.

• Journal of Convergence for Information Technology
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• v.8 no.6
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• pp.217-223
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• 2018

Real-time controllability has been a major challenge that should be addressed to ascertain the practical usage of the management systems. In this regards, for the first time, we proposed and implemented an IoT(Internet of Things)-based water tank system to improve convenience and efficiency. The reservoir can be effectively controlled by notifying the user if the condition of the reservoir is unstable. The proposed system consists of embedded H/W unit for sensor data measuring and controling, application S/W for deployment of management server via web and mobile app, and efficient database structure for managing and monitoring statistics. And machine learning algorithms can be applied for further improvements of efficiency in practice.