• International Journal of Internet, Broadcasting and Communication
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• 제12권4호
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• pp.55-60
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• 2020

This study aims to apply Arduino and 3D printing technology considered as a key subject in the age of 4th industrial revolution which is a step 1 for customizing and applying the process of production by chemical molding companies producing environment-friendly biodegradable packaging materials to the 3D printing teaching in universities. Step 3 is applied to IoT for Arduino application, and 3D printing technology is also used on the basis of teaching creative integrated human resource. Integration of Arduino with 3D printers is based on the assumption that middle- and high-school students can learn it step by step to higher levels and university students majoring or not majoring in computing science can also have computing skills for solving 3D printing-based problems. For IoT application in this study, the 3D printing technology is applied to the external shape of products for producing an Arduino-based lighting fixture. The applied 3D printing technology is further extended to teaching modeling of producing packaging materials by chemical product molding companies in the age of 4th industrial revolution.

• KSII Transactions on Internet and Information Systems (TIIS)
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• 제12권4호
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• pp.1415-1435
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• 2018

Resource allocation in device-to-device (D2D) aided cellular systems, in which the proximity users are allowed to communicate directly with each other without relying on the intervention of base stations (BSs), is investigated in this paper. A new uplink resource allocation policy is proposed by exploiting the relationship between D2D-access probability and channel gain among variant devices, such as cellular user equipments (CUEs), D2D user equipments (DUEs) and BSs, etc., under the constraints of their minimum signal to interference-plus-noise ratio (SINR) requirements. Furthermore, the proposed resource-allocation problem can be formulated as the cost function of "maximizing the number of simultaneously activated D2D pairs subject to the SINR constraints at both CUEs and DUEs". Numerical results relying on system-level simulations show that the proposed scheme is capable of substantially improving both the D2D-access probability and the network throughput without sacrificing the performance of conventional CUEs.

• 산경연구논집
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• 제10권5호
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• pp.21-26
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• 2019

Purpose - The IT convergence industry, which is the subject of this study, is the main strategy field during the 4th industrial revolution era. Against this background, it is urgent to establish policy measures to survive and spread export products in the global industries. Research, design, data and methodology - In order to achieve this goal, we conducted the Importance - Performance Analysis (IPA) and found that it is necessary to develop tailor - made marketing support for small and medium sized IT exporters and to develop export strategy products with competitive technologies. Results - Above all, customized marketing support for IT export-related SMEs was needed. Next, in the first quadrant, strategic products, qualitative level, global, value added, and information systems were included, and it was found that 'development of export strategic products with competitive technologies' was necessary. In the third quadrant, related variables calculated at present time are not urgent variables. Conclusions - In this study, it would be necessary to calculate the additional implications of the variables that are not considered in this study, including future studies, because the methods considered here as analysis variables are carried out in comparison with the previous studies.

• 융합정보논문지
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• 제10권4호
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• pp.140-150
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• 2020

본 연구는 직장인의 직무 스트레스가 구강 자각증상에 미치는 영향을 파악하고자 경기도 일부 지역 내 직장인을 대상으로 설문 조사를 시행하였다. 수집된 자료는 SPSS 21.0 프로그램으로 분석하였으며 그 결과, 직무 스트레스 하위 요인 중 직무 불안정은(p<.01)저작 장애에, 직무 요구는(p<.01)잇몸 출혈 및 잇몸질환에, 긍정적 조직체계는 구취와(p<.05)잇몸 출혈 및 잇몸질환에(p<.01)유의한 영향을 미치는 것으로 나타났다. 따라서 직장인의 직무 스트레스에 대한 효율적인 관리 방안을 마련하고, 직무 스트레스와 관련된 구강 자각증상을 예측한다면 직장인의 계속 구강 건강관리는 물론 성인 구강 건강증진에 도움이 될 것으로 판단된다.

• 융합정보논문지
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• 제7권5호
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• pp.25-30
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• 2017

본 연구는 일부 치위생(학)과 학생의 노인에 대한 부양의식이 공감력에 미치는 요인을 파악하고자 한다. 연구 방법은 광주광역시에 위치한 대학의 치위생(학)과 학생 193명을 대상으로 하였고, 자료 분석은 빈도분석, t-test, ANOVA, 피어슨 상관계수, 다중회귀분석을 IBM SPSS STATICS 20.0을 이용하였다. 연구 결과 노인에 대한 부양의식과 공감력은 양의 상관관계가 있었고, 공감력에 미치는 요인을 알아보기 위해 다중회귀분석을 실시한 결과, 노인문제 대한 관심도와 부양의식이 높을수록 공감력이 높게 나타났다. 이상의 결과로 치위생(학)과 학생들에게 노인 관련 교과목 개설 및 체계적인 교육 프로그램 구축이 필요할 것으로 사료된다.

• 한국수학교육학회지시리즈E:수학교육논문집
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• 제31권1호
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• pp.71-84
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• 2017

테일러급수는 대학 전공 수학의 여러 개념을 포함하는 복잡한 구조를 가지고 있다. 이 주제는 미적분학, 해석학, 복소해석학 등의 수학뿐만 아니라 물리학, 공학 등 다른 학문에서도 유용성과 응용성을 가진 강력한 도구이다. 그러나 학생들은 이 주제의 수학적 구조를 제대로 이해하는데 어려움을 느낀다. 이에 본 연구에서는 어떻게 학생들이 테일러급수 수렴을 이해하는지를 알기 위해서 학생들의 수학적 특징을 세 유형으로 분류한다. 그 후에 테일러급수 수렴의 구조적 상(image)을 이용해서 테일러급수 수렴에 대한 이해도를 분석하고 이에 대한 결과를 제시하고자 한다.

• The Journal of Korean Physical Therapy
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• 제33권4호
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• pp.187-192
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• 2021

Purpose: The purpose of the current study was to determine the intra- and inter-rater reliability of muscle thickness measurement of the TA using ultrasonography (US) conducted at different inward pressures of approximately 0.5 kg, 1.0 kg, and no pressure control. Methods: Twenty healthy subjects were recruited for this study. Two different examiners measured the thicknesses of the dominant TA of each subject randomly to assess the intra- and inter-rater reliability. The measurement values were analyzed using the intra-class correlation coefficient (ICC) with a 95% confidence interval, standard error of measurement, minimal detectable change, and coefficient of variance. Results: All intra-rater reliability ICC values showed high reliability above 0.9. Inter-rater reliability ICC values showed high reliability above 0.9 with 0.5 and 1.0 kg of inward pressure. In contrast, Inter-rater reliability ICC values showed poor reliability (0.23) with no pressure control of inward pressure. Conclusion: The findings showed that maintaining consistent inward pressure is essential for reliable results when the muscle thickness of the TA is measured by different examiners in a clinical setting.

• 한국산업융합학회 논문집
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• 제24권5호
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• pp.609-615
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• 2021

Chemical accidents can happen anywhere in the world. To prevent chemical accidents, Korea introduced the Chemicals Control Act. However, Small and medium-sized businesses do not meet these regulations. Accordingly, the Ministry of Environment is providing a chemical safety management support project for Small and medium-sized businesses. However, there are many small and medium-sized businesses, and businesses that need support need priority. In this study, the risk of the plants was classified into hig h, medium, and low risk based on four methods. As a result, out of 90 plants subject to the study, high risk was 30% and medium risk was 70%. The industries with the high risk were chemical products manufacturing and paint manufacturing. The plating and printing industries showed relatively medium risk. This risk classification has the advantage that it can obtain intuitive and quick results. These studies can be used as basic data for chemical safety management of local governments and Ministry of Environment.

• 디지털융복합연구
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• 제17권8호
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• pp.401-406
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• 2019

최근 미디어 환경과 게임 제작 기술의 급격한 발전으로 멀티 플랫폼 게임 환경이 일반화되면서 복합적인 융합 장르의 게임이 다수 제작되었고, 기존의 플랫폼에 의한 장르 구분은 그 경계가 모호해졌다. 게임 장르는 유저의 놀이적 참여로 인해 게임의 내용이 완성되는 유저 중심의 '서사와 놀이'라는 융합 콘텐츠이다. 본 논문에서는 게임에 대한 주체가 유저라는 본질적인 인식에 입각하여, 유저의 행위 유형에 따른 게임의 장르 구분을 제시하는 바이다. 유저의 행위는 각 장르마다 각기 다른 목표와 규칙체계 안에서 이루어지며, 이 때 상호작용은 게임 세계에 몰입하기 위한 중요한 행위가 된다. 그러므로 게임 장르별 유저의 행위 구분 및 인식은 게임 구조에 대한 파악에 있어 매우 중요한 요소가 되며, 게임 설계 및 제작 방향을 제시하고 해석할 수 있는 게임 구조의 재정립에 도움이 될 것으로 기대한다.

• 식품보건융합연구
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• 제7권3호
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• pp.33-40
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• 2021

The purpose of this study was to investigate the effects of turmeric intake and weight training on blood alcohol concentration, liver enzyme levels of and their effects on health promotion in adult males. There was no significant difference of taking turmeric powder combined with weight training exercise on blood alcohol levels in adult men who consumed alcohol on a regular basis. There was also no change on the change of body composition. The results were collected from elite athletes that had spent more than 10 years in their respective sports so it is difficult to observe any significant results from 8 weeks, short-term exercises of 1RM 70~80%, 3 times per week. In the next study, it is necessary to divide the subjects into more diverse groups and subject them by varying amounts of turmeric intake, exercise, etc., in order to fully study and understand the effects on blood alcohol level, change, and health promotion. Consequently, this study demonstrated there were no significant differences in the effects of continuous drinking habits of adult men's turmeric powder intake and weight training exercise on changes in GOT, GPT, γ-GTP, and blood alcohol concentrations. Moreover, health improvements themselves didn't affect changes in body composition.