• Journal of Electrical Engineering and Technology
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• 제9권3호
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• pp.978-983
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• 2014

The polymer nano composite possess good priority recently for engineering applications. Especially the electrical insulating materials attract the high performance of nano composites. In this work the ballmill synthesiation process of nano sized Alumina ($Al_2O_3$), the preparation of new nano composite material with an content of enamel and synthesized Alumina as 1wt%, 3wt% and 5wt%. Experimental investigation has been carried out for the prepared nano composites materials with respect to dielectric parameter measurements such as dielectric loss (tan ${\delta}$), dielectric constant (${\varepsilon}$), dielectric strength under various temperature. The partial discharge level also measured for all the samples and the PD inception voltage is also observed and compared. Weight loss of the material has been analyzed through TGA. It has been experimentally proved that 3wt% of Alumina nano filler added enamel has significant improvement in the dielectric and thermal properties.

• 한국산학기술학회논문지
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• 제14권2호
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• pp.613-624
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• 2013

본 논문은 남북한 관광자원개발 계획특성에 대한 우선순위를 비교분석하는데 연구의 목적이 있다. 실증분석을 위한 자료수집은 남한과 북한 및 중국의 관광자원개발 전문가를 대상으로 하였다. 유효표본은 252부이었고, 남한에서 회수된 설문지는 154부, 중국에서 회수된 설문지는 98부였다. 조사기간은 2012년 5월 15일로부터 12월 5일까지 실시하였다. 분석결과를 보면 관광자원개발 계획영역별 우선순위 분석결과에서 남한은 개발내용이 우선순위 1위였고, 북한은 개발주체가 우선순위 1위로 평가되었다. 관광자원개발 평가대상별 우선순위 분석결과 개발내용 평가대상 가운데서 남한은 문화관광대상개발 북한은 자연관광대상개발, 개발목표 평가대상 가운데서는 남북한이 관광경제성, 개발형태 평가대상 가운데서 남한은 특수목적관광자원개발 북한은 관광특구(단지)개발, 그리고 개발주체 평가대상 가운데서는 남북한 모두 제3섹터형이 우선순위 1위로 평가되었다.

• 한국치위생학회지
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• 제4권2호
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• pp.237-253
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• 2004

This study was to find a patient's motive for receiving implant treatment by age and gender using a self-reporting questionnaire survey with adults(men & women) in Woolsan. The result was as follows: 1. As a result of questionnaire survey with 155 patients in total(86 men, 69 women), 24 of 86 men(27.9%) valued the natural mastication feature of dental implant most, that is as similar as natural teeth, while 18 of 69 women(26.1%) had the most priority over the longer life of implant than common dental prostheses. By age, those in their 20s and 30s had a preference to implant treatment because it does not need to pulling out teeth for prostheses, while those in their 40s and over had a priority to the natural mastication feature of implant that is similar as much as natural teeth. By dental treatment, all of respondents said that the natural mastication feature is the most important in getting dental implant. It was founded that whether one can taste food as it is or not is less important, regardless of age or gender. 2. The greatest obstacle to implant surgery was expensive medical fees, 88 of 155 respondents(56.8%), with a fear of surgery itself being the least obstacle. 3. 90.2% of the total respondents said that they will want to receive dental implant treatment if their economy allow.

• 재활복지공학회논문지
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• 제11권4호
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• pp.299-306
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• 2017

국산 의료기기 산업에 대한 다양한 투자와 신기술 도입에 따라 국내의료기기 산업은 비약적인 증가를 하고 있으나 국내 대형의료기관의 국산의료기기 사용률은 여전히 저조한 것으로 조사되고 있다. 본 논문에서는 국내 대형병원에서의 국산 의료기기 사용률과 사용자 및 관리자의 인식조사를 수행하여 국산의료기기의 개선점을 제시하였다. 이를 위해 국내 4곳의 국립대학교병원을 대상으로 전체 의료기기의 종류와 국산 의료기기 사용률에 대한 조사를 진행하고 이를 바탕으로 의료기기 중 중점조사 대상 의료기기를 선정하였다. 중점조사대상 의료기를 대상으로 고장통계와 사용자 인식조사를 수행하였으며 이를 통해 중점조사대상 의료기기의 개선사항을 제시하였다.

• 디지털산업정보학회논문지
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• 제14권2호
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• pp.79-90
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• 2018

This study aims to provide the system to help decision making by finding key indicators used in land supply and demand surveys, and by developing storage priority areas and projects. As problems arose such as the rising cost of public projects or disruptions to business progress due to the rapid rise in land prices and the cost of compensation for public projects in the past, a new land policy was adopted and the land reserve system was established in 2009. At that time, The bank's goal was to conserve 2 trillion won of land per year, but the result was sluggish as it accumulated a total of 1.6 trillion won from 2009 to 2015. The reason for this sluggish result is that the type and quantity of indicators are still extensive and the survey of land supply and demand has a problem of poor utilization. In order to make up for the sluggishness, we made key indicators used in land supply and demand surveys using the question investigation, and analyzed the priority of the project areas. This study provide the system to help decision making by finding key indicators used in land supply and demand surveys, and the priorities of project areas.

• 인터넷정보학회논문지
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• 제22권4호
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• pp.99-110
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• 2021

Governments around the world are actively establishing strategies and initiatives to spread the use of artificial intelligence (AI), for AI is not a mere new technology, but is an innovative technology that brings about extensive changes in industrial and social structures and is a core engine that will lead the 4th Industrial Revolution. The South Korean government has also been paying attention to AI as a technology and tool for innovative growth, but its application to the industries is still rather sluggish. The government has prepared multifarious AI-related policies with the aim of constructing South Korea as an AI powerhouse, but there is no clear strategy on which detailed policies to implement first and which industries to apply AI preferentially. With these limitations of South Korea's AI policies in mind, this paper analyzed the priorities of industries in AI adoption and the priorities of AI-related national policies, using Delphi-AHP method for 30 top-level AI experts in South Korea. The results of analysis show that AI application is urgent and necessary in the fields of medical/healthcare, public and safety, and manufacturing, which seems to reflect the peak of the COVID-19 crisis in the second half of 2020 at the time of the investigation. And it turns out that policies related to AI talent cultivation, data, and R&D investment are important and urgent above all in order for organizations to apply AI. This suggests that strategies are required to focus limited national resources on these industries and policies first.

• 한국산업융합학회 논문집
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• 제23권6_2호
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• pp.1043-1050
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• 2020

In this study, a study was presented on the monitoring technique of landslide area using UAV. In the case of disaster investigation using drone mapping, it can be used at various disaster sites. The mission can be carried out at various disaster sites, including surveys of damage to mountainous areas caused by landslides, building collapses surveys of flood damage, typhoons, earthquakes. The damage investigation plan using drone mapping is expected to be highly utilized at disaster sites where investigators cannot access it like in mountainous areas and where it is difficult to conduct direct damage investigations at the site. Drone mapping technology has many advantages in terms of disaster follow-up, such as recovery. Compared to the existing survey system, which was mainly carried out manually, the investigation time can be drastically reduced, and it can also respond to disaster sites that are difficult to carry out or are difficult to access directly. In addition, it is possible to establish and guide spatial data at the disaster site based on accurate mapping data from the time of the disaster, which has considerable strength in managing the situation of the disaster site, selecting priority areas for recovery, and establishing recovery plans. As such, drone mapping is a technology that can be used in a wide range of sites along with natural disasters and social disasters. If a damage investigation system is established through this, it is believed that it will contribute significantly to the rapid establishment of recovery plans along with the investigation of disaster response time and extent of damage recovery.

• 한국정보통신학회:학술대회논문집
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• 한국정보통신학회 2012년도 추계학술대회
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• pp.450-453
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• 2012

우리는 의사결정에 있어서 매번 다양한 상황에서 최선의 선택을 해야 한다. 본 연구에서는 다양한 분야에서 여러 가지 대안중 하나를 선택해야 하는 경우 AHP(analytic hierachy process : 계층분석과정)기법에 따라 우선순위가 가장 높은 대안을 분석하는 시스템을 구현하고자 하였다. AHP는 의사결정기법중 하나로 의사결정자가 의사결정을 할 때 목적이 서로 상충하는 대안을 선택해야 하는 경우 유용하게 쓰이는 분석방법이다. 종래의 엑셀(excel)을 활용한 AHP소프트웨어나 PC용 소프트웨어는 있었다. 최근 스마트폰과 태블릿PC는 현대인의 필수품이 될 정도로 놀라운 보급률을 보이고 있다. 본 고는 AHP를 활용해 사용자가 모바일기기를 이용하여 보다 간편하게 우선순위조사에 참여할 수 있는 모바일애플리케이션(이하 모바일앱)을 구현해보았다.

• 한국정보시스템학회지:정보시스템연구
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• 제29권1호
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• pp.93-111
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• 2020

Purpose The purpose of this paper is to observe the relative priorities of importances among the modified versions of Block chain system, being based on AHP decision support model which should be also proposed in this paper. Design/methodology/approach Four versions modified from the beginning of Block chain were divided into Public& Permissionless, Private&Permissionless, Public&Permissioned and Private&Permissioned types. Five criteria for evaluating the four versions whether the version were suitable for Medical information system were introduced from five factors of Technologies Accept Model, which were Security, Availability, Variety, Reliability and Economical efficiency. We designed Decision support model based on AHP which would select the best alternative version suitable for introducing the Block chain technology into the medical information systems. We established the objective of the AHP model into finding the best choice among the four modified versions. First low layer of the model contains the five factors which consisted of Security, Availability, Variety, Reliability and Economical efficiency. Second low layer of the model contains the four modified versions which consisted Public&Permissionless, Private&Permissionless, Public&Permissioned and Private& Permissioned types. The structural questionnaire based on the AHP decision support model was designed and used to survey experts of medical areas. The collected data by the question investigation was analyzed by AHP analysis technique. Findings The importance priority of Security was highest among five factors of Technologies Accept Mode in the first layer. The importance priority of Private&Permissioned type was highest among four modified versions of Block chain technologies in second low layer. The second importance priority was Private&Permissionless type. The strong point of Private&Permissioned type is to be able to protect personal information and have faster processing speeds. The advantage of Private& Permissionless type is to be also able to protect personal information as well as from forging and altering transaction data. We recognized that it should be necessary to develop new Block chain technologies that would enable to have faster processing speeds as well as from forging and altering transaction data.

• 한국환경복원기술학회지
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• 제17권1호
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• pp.173-184
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• 2014

Riparian areas are significant functional grounds for inhabiting ecological system on the river such as the self-regulation of the water quality and the foundation of important corridors. For such functional device to operate, consecutive land purchase scheme that prioritizes targeted areas with high pollutant load rate imposes sustainable development of the ecological riparian belt. The purpose of this study is focused on measuring the methodology for selecting land purchse order before establishing riparian belt in accordance with pollution loading estimation and the basin approach. The Yeongsan and Seomjin river which includes targeted areas of the land purchase have been classified into the large-medium-small(standard basin) influence areas based on their catchment rage, which than sub-divided the research area of Juam lake by 38 small basins and 223 units. Small basins with the high pollution load rates have been assessed as the first prioritized targets. For the second priority, the condition of the point pollutant sources, original area of the targets, original restored area were concerned. The final decision of the land purchase order targeted only those within 50 meter range from the basin. To validate the accumulated data, the on-site investigation went along the targeted zones, which the result shows that all prioritized areas included both point and non-point pollutant sources, and had not a small originally restored areas.