• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.4
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• pp.1-8
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• 2019

In the rapidly aging society, the number of wheelchair users is increasing steadily. On the other hand, it is almost impossible for a disabled person using a wheelchair to use express buses. Therefore, it is necessary to develop an express bus that can secure the rights of wheelchair users. For these special types of express buses, it is required to develop a special entrance and lift system. The development of a wheelchair entrance system for the express buses requires design modification, retrofit, and reinforcement of the bus frame. This study evaluated the structural integrity of an entrance system for wheelchair users using a finite element method. Torsional stiffness and modal analysis were performed through structural analysis. Through sensitivity analysis, optimization was performed to reduce the weight of the frame. These results on the wheelchair entrance system are expected to be utilized in the vehicle modification and welfare industries.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.4
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• pp.336-344
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• 2019

The Ministry of Education (2015) announced the "2015 Revised Curriculum for Elementary and Secondary Schools" and announced that SW (Software) training for elementary and junior high school students to develop Computational Thinking will be gradually introduced from 2018. In addition, 'problem solving' and 'programming' have become important areas. Furthermore, the ability to analyze and utilize big data is becoming more emphasized. We developed and applied the statistical - Python programming convergence curriculum based on the idea that convergence education combining information and mathematics, programming and statistical literacy is needed according to current trends. Before and after the experiment, problem solving ability test and programming / mathematical interest test were conducted and compared with the corresponding sample t-test. According to the analysis results, there were significant differences in the pre- and post-test on problem solving ability, programming interest and mathematical interest at the significance level of 0.05.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.12
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• pp.854-862
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• 2018

The Government R&D budget for 2019 exceeded 20 trillion won in order to develop future growth market such as basic research investment and creation of growth engine. As such, the importance of R&D investment is increasing, and various schemes for enforcing efficient and transparent business expenses are being expanded. However, research expenses (Charge ratio) such as fraudulent execution of funds are continuously being generated, and a system of imposition of sanctions is being introduced. In this paper, the legal grounds of sanctions, comparative review of laws and regulations between the ministries, and the criteria of imposition (imputation) were analyzed. In addition, since the amendment of the standard for imposing the intergovernmental surcharges, a single standard has been applied, and the transition process of the surcharging system has been reviewed. As a result of the data analysis, it was found that they focused on micro - utility activities and suggested new policy measures corresponding to them. The Korea Academia-Industrial cooperation Society. The Korea Academia-Industrial cooperation Society.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.12
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• pp.332-339
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• 2018

This research explains a new process in architecture frameworks. A complete analysis on implementation of the specific frameworks can be conducted by a special system. Moreover, the system can be installed anywhere, and it produces a unique result, which is customized based on the contents of architectural designs by users. Before using the system, an architect should think about the design and the process of constructing frameworks because a computer sometimes computes misleading results although the architect describes architectural structures, which the designer wants. If the architect inputs the same process into the computer, and the result of frameworks changes, it is not a proper architectural design. Hence, a tool, which precisely treats data, is needed. Therefore, when constructing the proper architecture, a new paradigm of architecture should be used to distinguish the issues of discussion by using various data. Also, based on this information, an apartment housing complex design, related to possible parameters, which can be expressed by combining various fusion tables and geocloud, and architectural designs, is proposed.

• Applied Chemistry for Engineering
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• v.33 no.6
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• pp.588-593
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• 2022

The effects of P₂O₅-doped on the surface of MgO particles on hydrolysis, water repellency, and insulation behavior were investigated. P₂O₅-doped MgO has exhibited a unique electrical property, which is significant insulation behavior due to both the suppression of the hydrolysis reaction by P₂O₅ and water repellency. Therefore, the insulation behavior was inversely proportional to the hydrophilicity and the Mg(OH)₂ and OH^-charge transfer ratio by the surface hydration reaction of MgO. The insulation of MgO according to aging was strongly influenced by the surface hydration reaction, the band gap of the added dopant species, and the hydrophilicity and hydrophobicity of the dopant. Finally, it was to show electrical insulation by inhibiting the surface hydration reaction of the hydrophilic MgO, which has a great potential for use in heat transfer medium applications.

• The Journal of the Korea institute of electronic communication sciences
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• v.17 no.5
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• pp.1003-1012
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• 2022

The horizontal force transfer to the turbine and substructure of a wind power generation system is a very important factor in maintaining the safety of the system, but it is inevitably vulnerable to large-scale coastal disasters such as earthquakes and typhoons. Wind power generation systems built on the coast or far offshore are very disadvantageous in terms of economic feasibility due to an increase in initial investment cost because a more robust design is required when installed in areas vulnerable to coastal disasters. In this study, the GIS method was used to select the optimal site for a wind farm from the viewpoint of reducing the risk of coastal disasters. The current status of earthquakes in the West and South Seas of Korea, and the path and intensity of typhoons affecting or passing through the West and South Seas were also analyzed. Accordingly, the optimal offshore wind farm site with the lowest risk of coastal disasters has been selected and will be used as basic research data for offshore wind power projects in the region in the future.

• Convergence Security Journal
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• v.24 no.3
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• pp.131-141
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• 2024

This study aims to prevent the leakage of research and development results in universities and strengthen their research security systems. To achieve this, we surveyed research security managers at universities in Busan and Gyeongnam on their perceptions and needs, and proposed policy measures to promote research security. The results suggest that policies such as training of specialized personnel in research security, establishing a dedicated research security organization, mandatory education programs, and expanding government support are needed to activate research security in universities. However, the study has limitations due to the small sample size and limited scope to universities in Busan and Gyeongnam. Therefore, further research is needed to expand the scope and improve the research security system.

• Journal of the Korea Convergence Society
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• v.12 no.5
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• pp.147-155
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• 2021

This study covers the effectiveness of SNS utilization education for the elderly. Participants in the study conducted in-depth interviews with trainees currently participating in education and mentors of the same age who are working as assistive instructors. The study deals with whether SNS utilization education, which is considered difficult, can be a more valid class when an elderly person of the same age becomes a mentor and teaches a class. The results of the study said that it was a fun and rewarding education after using SNS for the elderly, free from fear of difficult devices due to the friendly consideration and empathy of the same age. If a mentor of the same age is used for education on SNS for the elderly, SNS education, which has been considered difficult and burdensome for the elderly, is expected to be activated with more flexible education.

• Korea Science and Art Forum
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• v.36
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• pp.11-22
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• 2018

This study recent changes in urban thermal environment caused by climate change generate diverse problems such as urban heat island effects, heat wave, and drought. Under this condition, with the increased perception and expectation of the quality of life, the urban citizens' desire for outdoor activities is increasing. This study conducted the thermal environment analysis focusing on the urban ecological park used by many urban citizens, and also suggested the renovation measures for urban ecological park considering the thermal environment. As the research site, the ecologically-favorable Gildong Ecological Pak with diverse space composition was selected. The measuring items were measured and analyzed by dividing them into thermal environment index and thermal comfort index. In the results of analysis in each type of park space, the forest zone showed the most favorable result. Based on such results, total three kinds of renovation measures for urban ecological park considering the thermal environment were suggested. Through this, the urban ecology park renovation plans were presented in three ways. The results of this study are meaningful in that it can be used as a base material for creating an ecological park considering the thermal environment.

• Proceedings of the Korean Society of Computer Information Conference
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• 2020.07a
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• pp.135-138
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• 2020

무선 센서 네트워크에서 모바일 싱크의 도입은 기존의 고정된 위치의 싱크를 사용하는 WSN에서 발생하는, 싱크 주변 노드들과 외곽 노드들 간의 에너지 불균형 문제(에너지 핫스팟 문제)를 어느 정도 해결할 수 있게 하였다. 그러나 모바일 싱크의 에너지 제약으로 인해 싱크가 모든 노드를 방문하여 데이터를 수집할 수 없기 때문에, 앵커(또는 헤드)라고 불리는 특정 노드에서 데이터를 모으고, 모바일 싱크는 이러한 앵커 노드들만을 방문하는 방법이 널리 사용되고 있다. 최근 연구에서는 모바일 싱크가 보다 효율적으로 에너지 불균형 문제를 해결하기 위하여 모바일 싱크 이동 경로 및 앵커 노드 선정 최적화 방법이 활발히 연구되고 있다. 본 연구에서는 태양 에너지 기반 센서 네트워크를 위한 영역 기반 앵커 선정 기법 및 모바일 싱크 이동 경로 선택 기법을 제안한다. 제안 기법은 각 노드가 수집하는 태양 에너지의 활용을 최대화하고, 에너지 핫스팟 문제를 완화하기 위해 두 개의 라인(영역)을 설정하고 이 라인을 따라 앵커 노드가 선정된다. 모바일 싱크는 데이터 수집을 위해 이 두 라인을 왕복 이동 경로로 택하여 라인 내의 앵커 노드를 방문한다. 실험을 통해 제안 기법이 기존 기법보다 에너지 불균형 문제가 완화되어 노드의 정전 시간이 줄어들고, 이에 따라 모바일 싱크에서 수집되는 데이터의 양이 증가하는 것을 확인하였다.