• 전력전자학회:학술대회논문집
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• 전력전자학회 2017년도 전력전자학술대회
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• pp.122-123
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• 2017

• 한국염색가공학회:학술대회논문집
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• 한국염색가공학회 2010년도 제3회 국제학회
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• pp.203-204
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• 2010

• 한국방사성폐기물학회:학술대회논문집
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• 한국방사성폐기물학회 2018년도 추계학술논문요약집
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• pp.519-520
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• 2018

• International Journal of Computer Science & Network Security
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• 제22권8호
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• pp.35-44
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• 2022

The Internet is extremely important to accomplish numerous items, from education to businesses and entertainment. Therefore, the quality of its performance must be efficient. Nowadays, there is a lack of information available for users to choose a suitable Internet service. What information is available might be insufficient, inaccurate, or regularly updated. Accordingly, there is a need to develop an electronic system that enables users to evaluate their current Internet service subscription. Several factors are used as evaluation criteria in the system that affect users' decisions. In this paper, a prototype of a design science research project is proposed to address a few objectives. First, it can help Internet service users in Saudi Arabia to make the best decision for themselves regarding Internet services subscriptions. Second, it can assist the Saudi government to seek one of the 2030 vision goals: the digital transformation that depends on having a good Internet connection. The proposed solution is a promising one that would help Internet service users to make the best decision for themselves and choose the best Internet service that fits their needs. A qualitative method has been used to evaluate the efficiency and the utility of the proposed system prototype. The results showed the extent of participants' acceptance of the Internet Service Evaluation System.

• 한국안전학회지
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• 제30권5호
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• pp.52-58
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• 2015

Although lots of safety inspection and precision safety diagnosis have been conducted on concrete retaining wall, there is no comprehensive analysis on the basis of the accumulated data associated with the statistic. Especially, the concentrated management is necessary on the evaluation items that cause critical damages for the efficient performance. In this regard, this study conducted a correlation analysis between the 18 condition evaluation items and defect index for the concrete retaining wall as well as how each item affects the final defect index as much as in the manual. As a result, correlation coefficient between sliding and overturning was 0.601, which means that they have a strong correlation, and the most influential item on defect index is the condition of drainage that scored the 0.750 correlation coefficient. In addition, as a result of regression analysis, the condition of drainage with the 0.683 correlation coefficient has a strong correlation with the defect index. If the condition evaluation items are integrated or readjusted based on the results of the statistical analysis in this study, the more efficient and accurate maintenance will be possible.

• 한국수소및신에너지학회논문집
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• 제26권6호
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• pp.659-665
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• 2015

In this study, an experimental investigation is performed for evaluation of a liquid pool spreading model with continuous release. The model considered in this study was developed based on a concept which means that the liquid pool spreading is governed by a balance between an inertia force from gravity and a frictional force from friction with the ground under the whole base of the liquid pool. For evaluation of the model, experimental study is performed. Experimental apparatus is setup for measuring release rate, spreading velocity, and evaporation rate from a liquid pool. The experimental results are compared with results from the model. By applying release and evaporation rates obtained from experiments to solving the model, liquid pool radius variation according to time can be obtained. For evaluation of an effect of friction force in the spreading model, results obtained from the models with and without the friction force are compared with those obtained from the experiments. As a result, it is shown that there exists a large deviation between the results obtained from the model without the friction force and the experimental results. On the other hand, the tendency of liquid pool radius variation according to time is similar between the results obtained from the model without the friction force and the experimental results.

• Asian Journal of Innovation and Policy
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• 제11권3호
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• pp.342-362
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• 2022

The national R&D project is a major strategy for the development of science and technology in the country. This is promoted for the purpose of improving the welfare of the people, such as creating jobs and fostering small and medium-sized enterprises, through the results of science and technology research conducted with support from the national budget. Therefore, analysis of the performance evaluation and budgeting system of the current national R&D project is one of the essential parts of preparing a system improvement plan. This study derived improvement plans through a comparative analysis of national R&D project performance evaluation and budget systems in Korea and leading countries such as the United States and Japan. As a result, it was confirmed that it may be difficult to derive innovative research results due to the lack of sustainability and a short period of time to require quantitative performance. To overcome these difficulties, the need for system improvement as follows was suggested. First, it is necessary to enlarge and prolong national R&D projects. Second, a plan for securing sustainability is needed in consideration of the main characteristics of each research field. Finally, it is necessary to strengthen the linkage between organizations in charge of national R&D projects. And also, there is a need for a system that can continuously identify problems and improve the system. In addition, the constitutional amendment will be necessary to separate science and technology from economic development, which states that Article 127, Paragraph 1, "Science and technology should be subordinated to economic development," which is the science and technology article of the current constitution.

• 대한기계학회논문집 C: 기술과 교육
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• 제1권2호
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• pp.147-152
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• 2013

본 논문은 산업통상자원부 R&D PD를 대상으로 여론 조사한 미래유망기술과 이에 연계된 뿌리기술에 대해 살펴보았다. 조사결과, R&D PD들은 미래 기술 트렌드는 기술의 융 복합화를 통한 인간중심의 기술과 기존의 성능을 뛰어넘는 임계성능의 신기술이 선보일 것으로 예상하였다. 특히 개인맞춤형 의료기술, 지능형/감성기반 시스템, 태양광발전, 플렉서블 소재 등의 산업분야가 유망할 것으로 예측하였다. 이 산업은 뿌리산업과 연관성이 크며, 이러한 산업을 발전시키기 위해서는 핵심뿌리기술의 개발이 절대적으로 필요하다. 궁극적으로 뿌리기술은 이러한 미래 유망산업의 지렛대 역할을 함과 동시에 제조기반의 든든한 뿌리가 될 것으로 기대된다.

• 상하수도학회지
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• 제28권1호
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• pp.103-110
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• 2014

In this study, the evaluation criteria of performance and applicability is developed to rank the combinatorial technologies for SWG (Smart Water Grid) system using AHP (Analytic Hierarchy Process) method. Security, safety, solution, suitability and sustainability which are goals of SWG technology, are used as upper level hierarchy elements. And three detailed elements for each upper level hierarchy are adopted as the lower level hierarchy. The weighted value which represents the importance of each element, could be determined through questionnaires accomplished by groups of specialists who are engaged in relevant waster industry and research area. To assess the accuracy of the evaluation criteria developed in this study, a simulation on four decision alternatives for smart water grid was carried out as an evaluation. Consequently which showed 90 % of accuracy.

• 한국기계가공학회지
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• 제17권3호
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• pp.87-92
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• 2018

As gas turbines for power generation become increasingly more important for high capacity and high efficiency, the technological development and investment of companies are increasing globally. Gas turbine manufacturing technology is only owned by a few companies such as GE, Siemens, and MHI, and our country currently depends on imports of processing technology and component parts. The core part of the gas turbine is curvic coupling tooth processing technology that improves turbine efficiency by smoothly transmitting power to the turbine rotor. Curvic coupling tooth machining and evaluation research is restricted overseas, and it is not underway in Korea. Therefore, in this study, roughing and finishing process technology for curvic coupling tooth machining is developed and a quantitative evaluation method is proposed. For the development of machining technology, the analysis of critical parameters was performed through C & E analysis. In the roughing process, the conditions considering the minimum machining time and tool load ratio were determined. Finishing process conditions were determined based on the contact ratio between the tooth surfaces. The image-processing method is presented for evaluation of the contact ratio and a verification test was performed.