• Proceedings of the Korea Information Processing Society Conference
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• 2001.10b
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• pp.1103-1106
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• 2001

초고속국가정보통신망 이용기관정보관리시스템은 사업 정책에 따라 지난 '97년 신규 구축된 이래 총 4차례의 수정 구축을 거듭해왔다. 그에 따라 신규 구축 당시에 비해 처리량이 5배 가량 증가하였으며 국가망사업자와의 시스템연동, 표준코드수용, 이용요금 정산기능, 웹서비스 제공, 망관리시스템 기초자료 관리 등 수 차례 기능 확장이 이루어져 왔으나, 과다하게 소요되는 처리 속도, 실시간 자료 처리 불가 등 현재 현저한 시스템 성능 저하에 직면하게 되었다. 본 논문에서는 현재 시스템의 성능 저하 요인을 분석하고 개선안을 제시한다.

• Proceedings of the KIEE Conference
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• 2008.07a
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• pp.534-535
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• 2008

2001년 4월 이후 기저발전기의 정산제도가 지속적으로 개선되어 왔다. 소비자 요금이 규제받는 상황에서 소매부문과 발전부문의 수지균형을 기저발전기에 규제가격을 적용하여 해결하였다. 따라서 본 논문에서는 설비예비력 확보 메커니즘의 경제적 이론을 고찰하고 현 전력시장의 전원별 투자시그널에 대해 분석하였다.

• 한국IT서비스학회:학술대회논문집
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• 2007.05a
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• pp.500-505
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• 2007

디지털 음악상품의 유료화 서비스를 위해 P2P 서비스 업체들은 콘텐츠를 다운로드 할 때 주는 자와 받는 자간에 포인트를 주고받는 것이 일반화되어 있었다. 그러나 이러한 방식은 다운로드 건별로 사용료를 지급해야 할 권리자와 콘텐츠를 명확하게 연결할 수 있는 콘텐츠 식별 방법이 없는 상태에서 진행되는 것이다. 따라서 명확한 음악식별이 중요한데, 불특정 다수가 제공하는 콘텐츠는 일반적으로 정보가 부정확하고 일관성이 결여되어 있어 해시 기술이나 음악인식 기술 등의 신뢰할 수 있는 콘텐츠 식별 방법을 이용하여 저작권 관리를 하여야 한다. 본 연구에서는 해시 기술 및 콘텐츠 인식 기술을 융합하여 두 기술의 장점만을 활용함으로써 해시 기술의 빠른 속도와 콘텐츠 인식 기술의 편리함을 동시에 제공한다. 이를 바탕으로 저작권 DB 관리 방법, 요금 결제 및 정산 방법 등을 이용하여 P2P 서비스의 유료화를 구현하고자 한다.

• Proceedings of the KIEE Conference
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• 2001.11b
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• pp.179-181
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• 2001

계량규칙은 전력거래에 따른 전력량의 수수를 정량적으로 계산하기 위한 규칙이다. 계량규칙에서는 전력거래소를 포함하여 전력거래와 관계된 모든 시장참석자들의 거래 전력량을 정확하게 측정하여 이들 데이터를 정산시스템에 전달함으로써 전력거래에 따른 요금계산이 가능하도록 지원할 뿐만 아니라 계량기에 저장된 데이터를 바탕으로 시장운영자의 발전지시를 발전사업자가 잘 준수하고 있는지의 감사 근거자료를 제공하기도 한다. 본 논문에서는 이 밖에 계량설비에 요구되는 조건, 계량설비의 설치위치 계량기 설치 및 비용부담의 주체, 계량기의 교정 및 시험 등에 관련된 사항 등에 대해 각 시장 참여자가 양방향 입찰 전력시장의 효율적인 운영을 위해 지켜야할 책임과 의무 등에 대해 제시한다.

• Environmental and Resource Economics Review
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• v.24 no.3
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• pp.573-605
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• 2015

This study proposed scenarios of tax reform regarding taxation on bituminous coal for power generation since July 2015 and July 2014, estimated its impact on SMP, settlement price, tax revenue from year 2015 to year 2029. These scenarios are compared with those of the standard scenario. To estimate them, the power system simulation was performed based on the government plan, such as demand supply program and the customized model to fit Korea's power system and operation. Imposing a tax on bituminous coal for power generation while maintaining tax neutrality reducing tax rate on LNG, the short-term SMP is lowered than the one of the standard scenario. Because the cost of nuclear power generation is still smaller than costs of other power generation, and the nuclear power generation rarely determines SMPs, the taxation impact on SMP is almost nonexistent. Thus it is difficult to slow down the electrification of energy consumption due to taxation of power plant bituminous coal in the short term, if SMP and settlement price is closely related. However, in the mid or long term, if the capacity of coal power plant is to be big enough, the taxation of power plant bituminous coal will increase SMP. Therefore, if the tax reform is made to impose on power plant bituminous coal in the short term, and if the tax rate on LNG is to be revised after implementing big enough new power plants using bituminous coal, the energy demand would be reduced by increasing electric charges through energy tax reform. Both imposing a tax on power plant bituminous coal and reducing tax rate on LNG increase settlement price, higher than the one of the standard scenario. In the mid or long term, the utilization of LNG complex power plants would be lower due to an expansion of generating plants, and thus, the tax rate on LNG would not affect on settlement price. Unlike to the impact on SMP, the taxation on nuclear power plants has increased settlement price due to the impact of settlement adjustment factor. The net impact of energy taxation will depend upon the level of offset between settlement price decrease by the expansion of energy supply and settlement price increase by imposing a tax on energy. Among taxable items, the tax on nuclear power plants will increase the most of additional tax revenue. Considering tax revenues in accordance with energy tax scenarios, the higher the tax rate on bituminous coal and nuclear power, the bigger the tax revenues.

• Journal of Korean Society of Transportation
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• v.17 no.1
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• pp.113-129
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• 1999

It is widely recognized that the value of travel time (VOT) plays an important role both in choosing the transportation alternatives on an individual level, and in analyzing and evaluating transportation plans and other public policy makings on a collective level. There is, however, a great deal of difficulties to correctly estimate the VOT. In addition, although there are lots of methods to estimate the VOT so for, not many recommendations have been presented to reflect the localities associated with the VOT derivation in Korea. This study aims at deriving the VOT for different trip purposes and travel modes with their significances tested. To accomplish this purposes, a logit-based travel mode choice model based on revealed preference (RP) data has been formulated, calibrated using the discrete choice model of LIMDEP package for various trip purpose models. For each trip purpose and travel mode, the VOT has been calculated along with the significance testing of the derived VOTs. From the results given in this research, the VOTs for different purposes and modes are identified different, and they are statistically significant. The updated results here in this paper may be a yardstick in evaluating the transportation plans and policies by providing more detailed VOT information for different categories, especially in urban context.

• Journal of the Korea Institute of Information and Communication Engineering
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• v.15 no.5
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• pp.1007-1017
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• 2011

It is important to set the new interconnection system under NGN. The traditional interconnection system is based on traffic, but this is not suitable for IP based service. Therefore, it is needed to ensure the universal access to network without trouble about the network topology. This paper prepares the evaluation criteria and evaluates the alternatives. Specifically, we deduce the alternatives and evaluates the alternatives of interconnection settlement system based on the condition of efficient interconnection, the retail price and access charging model, and the previous studies evaluating and examining the various alternatives. Finally, we evaluate each alternatives by the criteria.

• The Journal of the Institute of Internet, Broadcasting and Communication
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• v.9 no.3
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• pp.83-91
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• 2009

In this paper, we propose a new design of circulation system of digital music contents in P2P service. It has functions of contents recognition, management of copyright DB, clearing house to perform payment system of P2P service. In P2P service each user provides his music contents, but in other circulation system, service providers provide their music contents. Therefore it is very difficult for each provider to recognize whatever the quality of distributing contents are good or not. Most circulation systems use hash technology or contents recognition technology for the recognition of contents. For the usability and efficiency this proposed system provides the combining technology of hash processing and contents recognition.

• Proceedings of the KIEE Conference
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• 2003.07a
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• pp.627-629
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• 2003

직접부하제어사업은 전력산업구조개편에 따라 발생할 수 있는 공급자원의 불확실성에 대비한 강력한 수요관리프로그램 중의 하나로 정부에서 중점 추진중인 사업이다. 이미 선진국에서도 다양한 메커니즘에 의해 Demand Response Program과 같은 부하관리프로그램을 운영하여 전력수급 및 전력요금 안정화를 꾀하고 있다. 우리나라의 경우 2001년도부터 동사업이 시행되고 있으며, 이에 주관기관으로서 에너지관리공단에서 추진하고 있는 직접부하제어를 위한 시스템 구성 및 운용방안에 대해 언급하고자 한다. 직접부하제어시스템은 크게 2단계로 구분되어지며, 상위시스템은 에너지관리공단에 설치 운영 중인 "전력부하관리센터(LMC)"와 민간 참여에 의해 운영 예정에 있는 "부하관리사업자시스템 (LSES)"으로 구성되며, 하위시스템은 "수용가용 직접부하제어시스템"으로 구성된다. 이에 본 연구에서는 직접부하제어시스템의 제어명령 체계 및 계량/정산을 위한 데이터처리방식 둥을 제시하여 본 시스템의 유용성 및 발전방향을 도출하고자 한다.

• KIPS Transactions on Software and Data Engineering
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• v.12 no.1
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• pp.31-40
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• 2023

Various policies and services are being implemented in Korea and other countries, such as the expansion of convenience facilities for mobility support, the provision of special means of transportation, and the establishment of public transportation route plans and fare policies based on data and AI-based movement pattern analysis to ensure the mobility rights of the weak in transportation. However, A research is still needed to improve service convenience in order to more conveniently use the desired means of transportation in a necessary situation from the viewpoint of the transportation vulnerable. This study examines the policies and services for the promotion of mobility for the transportation disadvantaged, and presents a MyData-based service model for mobility support for the transportation disadvantaged. In the proposed service model, the transportation-disabled person can freely choose and use the means of transportation according to individual circumstances, and receive the same transportation welfare voucher benefits provided by the state or government. The proposed service model defines the MyData platform that supports the safe collection and use of personal data, the authentication of traffic welfare recipients based on MyData, and the payment function for fee settlement after using the service as key components. In this research, the service satisfaction from the user's point of view was investigated by implementing the proposed service model and providing a demonstration service for the transportation vulnerable in Daejeon.