• 전기학회논문지
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• 제61권1호
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• pp.155-161
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• 2012

The firmware upgrade, which is remotely performed, is an essential function in smart metering or AMI (Advanced Metering Infrastructure). In other words, the AMI software and firmware can be switched for maintaining and improvement without replacement of H/W devices in AMI environment. Also, if number and type of devices are increase, the demand of remote update service will be increased. Through the firmware upgrade service remotely, the electric power corporation may be able to benefit various fields. For example, there are to adapt more easily in many environments, real-time service and to cut maintenance costs. In this paper, we proposed to design an international level FUMS(Firmware Upgrade Management System) which includes requirement function, architecture and protocol related with DCU, Smart Meter.

• 한국광학회:학술대회논문집
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• 한국광학회 2007년도 하계학술발표회 논문집
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• pp.365-366
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• 2007

Micro jetting drop inspection system is essential to measuring micro drop volume. Measuring pico-liter drop volume is useful for new LCD color filter product process that is based on inkjet printing technology. To upgrade the reliability in drop measurement system, we use the auto focusing & multi drop reiteration & blurring average algorism. First of all we used standard mark for gage R&R in the vision system. Finding the most suitable threshold for multi blurring drop, is the main key of this research. Sensitivity of vision system is a standard in measuring the upgrade system level. So, suitable threshold can upgrade the performance of jetting drop inspection system.

• 교육시설
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• 제4권1호
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• pp.5-20
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• 1997

This paper is to survey the cooperation between the school and the community with respect to the degree of share of their facilities. The hypothesis of this paper is that the share of facilities between the school and the community is helpful for the two. That is, the community, using the school facilities, can educate to upgrade its people to higher social level. The school, using the community facilities, can compensate insufficient school facilities and facilitate student learnings. This paper employed both a literature survey and a case study approach explained by the case of Seong Dong Gu and its schools. This paper argued that the share of the facilities between the school and the community is needed to facilitate student learnings and to upgrade community people to higher level. Thus, government should encourage the cooperation between the two. This paper found that the school can use other schools' facilities, camping facilities, various types of private institute, community libraries, social welfare centers, athlentic facilities, and park facilities in the community. Most of the facilities are rested during school hours and are vacant more or less after school hours, so that there are still room for share the facilities with the students. This paper found that the community can easily use school facilities for life-long education programs, house-wife classes, athlentic programs for daily life, recreation classes for community people because the school is located in the center of the community. These programs using school facilities can encourage to upgrade community persons' social levels. However, this paper found that the degree of community use is insufficient to fulfil the school facilities. Only a few percent of the school class rooms and other facilities are used by the community. Therefore this paper asserted that community education programs using school facilities should be expanded. This paper recommended, based on the findings, that governments should encourage the cooperation between the school and the community to facilitate student's learnings and to upgrade community people to higher level. Also it recommended that the school should share more community facilities and that the community should share more school facilities.

• 기술혁신학회지
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• 제8권2호
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• pp.650-676
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• 2005

It is important to identify the mid and long-term strategic technologies and evaluate technology level for the establishment of national R&D policy to upgrade technology level in Korea. This paper summarizes the result of technology level evaluation for 99 key technologies of 'National Technology Road Map', which consists of 5 visions, of Korea. The technology level, the technological gap between Korea and world-top country, the role of government to upgrade technology level, etc. were investigated by the survey (total 1,067 respondents) and the interview with experts related to key technologies. The average technology level of Korea was $65.1\%$ of that of world-top country and average technological gap was 5.8 years. The technology level of vision I 'Building an Information-Knowledge-Intelligence Society' was $71.6\%$ and highest among 5 visions. The highest technology level among 99 key technologies was $85.6\%$ for 'Digital Broadcasting Technology' and the lowest was $20\%$ for 'weather Control Technology'. The major reasons of technological gap were investigated as the lack of R&D personnel ($23.8\%$), the shortage of R&D funds ($17.8\%$), and the insufficiency of basic research ($15.4\%$), in sequence. The average technology level of USA was evaluated to highest in the world. It was presented that the technological power of China increased rapidly in the expert interview. The result of technology level evaluation would be primary information for various national S&T planning, such as S&T basic plan, S&T foresight, technology road map, etc.

• KEPCO Journal on Electric Power and Energy
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• 제3권1호
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• pp.17-21
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• 2017

Recently, the Korea Enhanced Power system Simulator (KEPS) was upgraded with new processor cards and various peripheral devices. The purpose of the upgrade is for the large-scale AC/DC simulation studies for different purposes such as FACTS, PMU applications, and SPS. The need for such study is now growing in KEPCO network. Frequently, traditional ways of performing the necessary study had been found to be less adequate for guiding the key decisions in the company. Therefore, the growing needs, as well as the revealed inadequacy of the traditional system studies, had been attributing to the momentum for the upgrade project. This paper explains the details of the upgrade project. As an example of presenting the effectiveness of the upgraded RTDS system in KEPRI-KEPCO, a large-scale AC/DC real time simulation case which includes the entire Korean network and a planned MMC-HVDC system is introduced.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2003년도 학술발표논문집
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• pp.119-122
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• 2003

This study was carried out to propose some useful advices for the improvement policy of the minor rural roads. From the case study on 5 country areas of Chonnam Province, it was ascertained that above a third of minor rural roads did not meet the statutory minimum level of their width, which means the necessity of substantial upgrade of road improvement works in rural areas.

• 한국콘텐츠학회논문지
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• 제7권5호
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• pp.156-165
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• 2007

최근 수입경영은 항공운송산업뿐만 아니라 이와 유사한 일회성상품(perishable assets)의 성격을 갖는 산업 전 부문에서 널리 활용되고 있다. 본 논문은 항공산업에서 활용되고 있는 정태적 좌석할당모형을 기반으로 시점마다 무작위로 발생하는 고 저가의 항공수요가 각 요금수준별 사전 할당된 좌석의 유무에 상관없이 필요에 따라 상하 이동을 하며 고가수요가 저가의 좌석을 선택할 수도, 저가의 수요가 고가의 좌석을 구입할 수도 있다는 전제로 기존의 한 방향 좌석할당모형과 대별되는 양방향 좌석할당모형을 개발한다. 또한 본 모형을 기반으로 항공사 수입이 기존의 한 방향 수요이동을 고려한 모형과 비교하여 수입을 더욱 극대화 시킬 수 있다는 사실을 실증한다. 실증방법은 C-프로그램을 활용하여, 수요의 가격수준을 국내 K항공사에서 한국지역 판매를 위해 활용되고 있는 4가지 운임으로 구분하고, 수요분포는 최대값과 최소값을 발생확률에 따라 난수를 이용하게 되며, 요금수준은 한국지역의 요금수준분포를 참조하여 고가를 100, 90, 85, 80 수준으로 하여 모의실험을 시행한다. 그 결과 고가의 수요에 지나친 좌석할당을 시행하는 경우를 제외하고는 수요의 양방향을 고려한 항공좌석할당 방법이 높은 수준의 수입을 창출할 수 있다는 결론을 얻게 된다.

• 응용통계연구
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• 제26권1호
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• pp.151-162
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• 2013

중고제품 특히 고가인 중고품에 대한 점증하는 수요로 인하여 그러한 제품에 대한 보증과 보전정책이 최근 제품의 신뢰성을 향상시키기 위해 연구되고 있다. 이 논문에서는 사용한 년 수 x에서 고객에 의해서 구입된 중고제품에 대한 주기적인 유지보수모형을 연구하였다. 구입할 때 판매자는 제품의 고장율을 줄이기 위해서 그리고 각각의 유지보수가 수행되고 난 이후에 신뢰성을 향상시키기 위해서 정해진 보증기간을 제공한다. 만일 연속적인 유지보수 사이에서 고장이 일어난다면 단지 최소수리가 행해진다. 보증정책에 대해서 보증기간동안에 주기적인 유지보수 점검과 더불어 각 고장에 관해서는 무상 비재생수리를 한다. 따라서 이러한 보증정책 하에서 보증기간에 일어난 모든 유지보수와 수리비용은 판매자에게 부과된다. 제안된 주기적인 유비보수 계획에 대해서 보증기간 동안에 판매자에게 부과된 기대 총비용을 계산하기 위한 모형과 판매자의 측면에서 총기대보증비용을 최소화하기 위한 각 유지보수에서 고장율의 최적향상수준을 유도한다. 또한 제안된 방법들에 근거해서 최적향상수준에 대한 수치적인 결과를 제시한다.

• 한국콘텐츠학회논문지
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• 제11권5호
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• pp.93-103
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• 2011

현재, 도서관시스템의 소프트웨어 사용 방식은 클라이언트/서버 및 ASP 방식으로 서비스를 제공함으로써 하드웨어 및 소프트웨어 구매비, 설치 및 배포, Customization, Upgrade, 문제점 관리, 라이센스의 고비용 등 소프트웨어 전반에 걸쳐 관리가 힘들고 고비용의 문제점이 있다. 이러한 문제점을 해결하기 위해 SaaS 기반의 전자도서관시스템에서는 멀티테넌트 환경(SaaS 성숙도 레벨 3이상)에서 구현이 가능한 핵심요소들을 개발하였다. 그러므로 초기 투자비용이 거의 없고, 쉽고, 간편하며, 저비용 IT 서비스가 가능한 SaaS 기반의 소프트웨어 온-디멘드 방식의 서비스 모델로 시스템을 구현하였다.

• 대한안전경영과학회지
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• 제6권2호
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• pp.103-114
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• 2004

IEC 60300 series, the international standards on reliability management system are newly developed and introduced rapidly worldwide. In order to meet this fast-changing situation, it is necessary to apply them to the Korean industries effectively. It includes the establishment of the infrastructure such as documentation of Korean Standards, introduction of test equipments and test manuals, accreditation of the certification bodies and training of the specialists etc. IEC 60300 is upgraded management system of the ISO 9000 and ISO 14000. In this regard, the Korean companies which were certified with the ISO 9000 or 14000 should endeavor to find new strategies and methods to be certified with IEC 60300. This paper introduces a Quantitative method of estimating the level of the reliability management system by applying the MIR(Maturity Index on Reliability) technique. This enables the estimation of the operation level of the system and can upgrade the maturity level of it.