• Journal of the Korea Organic Resources Recycling Association
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• v.27 no.1
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• pp.65-75
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• 2019

The government is promoting recycling of waste resources through the enactment of Fundamental Law on Resource Circulation, the revision of the Wastes Control Act and zero-landfilling of untreated waste through improved processes such as recycling and diversification. As of 2015, the total amount of landfilled waste is 38,308 ton/day in Korea. The amount of landfilled waste from industrial sectors is 23,577 ton/day, accounting for 62 % of total landfilled waste. In the study, we investigated the characteristics of the thermal treatment residue among inorganic wastes and estimated the landfill reduction potential according to the relevant recycling criteria, which can go through recycling paths. As a result, it is estimated that about 5~42 % of the landfilled waste can be reduced in case mandatory recycling and landfill suppression policies such as recycling criteria for thermal processing residues and expansion of recycling obligation targets should be implemented. In order to minimize landfill disposal, it is necessary to expand the diversity of waste recycling type and the usage of recycled products.

• Environmental and Resource Economics Review
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• v.16 no.1
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• pp.99-127
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• 2007

When the margin between available capacity and demand is thin in a liberalized electricity market, prices rise steeply and system reliability is threatened. The principal response to these circumstances is often an assumption that price spikes and electricity shortages are the result of a failure to build sufficient new supplying facilities. It is, of course, often the case that additional investments in generation and network facilities would improve reliability, and such investments are often needed. But focusing on additional generation and transmission facilities for restoring balance to the grid overlooks the essential fact that reliability is a function of the relationship between supply and demand, imposing unnecessary costs on electric system. When the relationship is out of balance, the search for solutions must consider not only investments supply-side resources but also cost-effective demand-side resources such as accelerated load management, efficiency measures, and price-responsive load programs. Integrating demand resources into electricity markets can add enormous value to the electric system, widening the capacity margin, lowering costs and enhancing system reliability at the same time. This paper studies several challenges now facing electricity markets: demand-side management-especially, economic effects of demand response, potential reliability problems, market and system operation, CBP market improvements and so on. The paper concludes with a series of policy recommendations in five areas: (i) The Effects of efficient improvement to incorporate demand responses and demand-side resources into modem electricity markets, (ii) Fosteing price based demand response and (iii) improving incentive based demand response, (iv) strengthen demand response analysis and valuation, (v) integrating demand response into resource planning and adopting enabling technologies.

• Proceedings of the Korean Society for Information Management Conference
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• 2012.08a
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• pp.17-20
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• 2012

2000년대 초반 이후 논의되기 시작한 도서관장애인서비스는 최근 도서관법(법률 제11310호, 2012.2.17 일부개정)이 개정되면서 그 중요성이 더욱 부각되고 있다. 본 연구는 도서관장애인서비스의 법적근거 및 추진체제, 주요 정책 내용을 살펴보고, 도서관발전종합계획(2009~2013)과 연도별 시행계획(2009~2012), 국립장애인도서관지원센터 업무 등을 분석하여 현재 우리나라 도서관장애인서비스 정책동향과 발전방안을 모색하였다. 현 시점에서의 우리나라 도서관장애인서비스 정책은 일선 도서관들이 효율적으로 콘텐츠와 시설을 구비하고 전문 인력을 확보할 수 있도록 함과 아울러 기반자원을 보유한 기관들의 적극적인 참여를 이끌어 낼 수 있는 방향으로 전개될 필요가 있다.

• THE HEALTH and ORGANIC FARMING
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• no.221
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• pp.1-12
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• 2005

제27회 한국유기농업대회 성황리 개최/농림부장관 격려사/우리의 산야초/겨울철 토양의 영양관리는 이동성이 어려운 칼슘과 고토 그리고 붕소를/제27회 한국유기농업대회 이모저모/'자원순환형농업 활성화 방안'/"우수 농축산물 합리적 생산이력 관리 방안"세미나/"농업,환경 문제와 연계 필요"/"충북,근교농업 준비 갖춰야"/전남,친환경농업기금 500억조성/농어업특위,'도시민을 농어촌으로'/태안군,웰빙 6쪽마늘 생산단지 조성/우리조상들이 연구한 물이야기/착각하고 있는 잘못된 웰빙/토양다발성 병해 예방/바이러스병 어떻게 전파되며, 어떻게 막아낼것인가?/시설채소의 병해방제/협회저농약9호/"금수강산"가격인상 안내/우수농산물코너/본 협회 인증위원회 개최/12월중 협회 일정 안내/배추 무사마귀병은 무와 윤작으로/미.영,급식등 '어린이영양'법제화/11월중 새식구 명단/협회소식/약이되는 웃음,약이 되는 웃음 운동/다층식 지렁이 사육시스템 개발/친환경 먹거리 대체의학센터 충주에 건립/미국?, 화학원료 넣어도 유기농산물?/멕시코도 유기농 제품 바람/과일껍질 이용한 아이디어 살림법/서식환경의 파괴

• Journal of Korean Society of Archives and Records Management
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• v.3 no.2
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• pp.115-141
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• 2003

This paper suggests efficient policies of the long term preservation and digital archiving of Korean electronic journals based on the OAIS Reference Model. For this purpose, a questionnaire survey and interviews have been conducted to the institutions which are providing access to Korean electronic journals. Information packages and functional workflows which suggested in the OAIS Reference Model are applied to improve the long term preservation.

• Proceedings of the Korean Institute Of Construction Engineering and Management
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• 2004.11a
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• pp.210-215
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• 2004

In can occur to many problems on progressing step without close scope definition, interrelation definition between activities, resource plan, and schedule plan on planning step. But it have not closely defined performance system on planning step because of many constraints of domestic construction industry. Therefore this paper intends to discuss a method of calculating optimal cost and duration using Linear Programming that solves maximing or minimizing problems among decision making methodology and Monte Carlo Simulation that decreases to probability errors. With outcoms applying Linear programming and Monte Carlo Simulation for calculating optimal cost and duration, follow as : With outcomes applying Monte Carlo Simulation, it could calculate reliable estimator about project duration through removing various constraints. With outcomes applying Linear programming, it could calculate optimal value about project cost through defining various variables and constraints on many activities.

• Journal of Korea Water Resources Association
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• v.32 no.5
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• pp.525-535
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• 1999

An optimal unit commitment model for efficient management of water and energy resources in a basin using combined mixed integer programming is developed. The combined mixed integer programming model is able to solve the inconsistency problem that may occur from mixed integer programming models. The technique which enables the use of conditional constraints and either-or constraints in the linear programming is also suggested. As a result of applying the combined mixed integer programming model to Lower Colorado River Basin in United States. the basin efficiency is decreased by 1.53% from the results of the mixed integer programming, while it is increased by 0.67% from the results of the historical operation. It is found that the decreased allowable error between power supplies and demands in the combined mixed integer programming causes the decreased basin efficiency.

• Proceedings of the Korea Water Resources Association Conference
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• 2022.05a
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• pp.31-31
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• 2022

기후변화, 물 부족, 인구 증가와 도시화로 인한 물 수요 증가, 수질 악화, 노후화된 인프라와 같은 세계적인 물문제의 증가로 인해, 도시 물순환 시스템 관리는 더 큰 어려움을 겪고 있다. 취수, 도·송수, 정수처리, 배·급수, 용수 사용, 하수 집수, 하수 처리, 재이용 및 배출 과정을 포함하는 도시 물순환 시스템의 과정은 매우 에너지 집약적인 활동이며, 이와 같은 에너지 소비는 탄소 배출과 양의 직접적인 상관관계가 있다. 따라서 자원 관리 및 데이터 관리를 최적화하기 위해 넥서스 관점의 접근법이 도시 물순환 시스템에 점차적으로 도입되고 있는 추세이다. 도시 물순환 시스템 넥서스에서는 일반적으로 에너지 인텐시티로 표현되는 물을 위한 에너지를 이해하는 것이 중요하다. 에너지 인텐시티의 차이는 기후(연평균 강수량, 단기 기후 변동성, 기후패턴 등), 지리적 특징(표고차, 평지비, 위치 등), 시스템 특성(총급수량, 인구, 인구밀도, 관로 연장 등) 및 운영관리 효율(수압, 누수율, 에너지 효율 등)과 밀접한 관계가 있다. 그리고 도시 물순환 시스템에서 에너지 관리를 증진시킨 방안은 유지관리 효율 개선(물·에너지 관리전략, 물손실 관리, 수요 관리 및 수요 대응 등), 신기술 도입, 그리고 에너지 회수로 나누어진다. 본 연구에서는 기존 문헌의 자료를 분석하여 도시 물순환 시스템의 각 공정별 에너지 인텐시티를 분석하였으며, 시스템 다이나믹스를 적용하여 다양한 도시 여건(인구, lpcd, 누수율, 취수원, 에너지 인텐시티)에서 외부영향(기후변화, 도시화)과 운영효율 변동(운영효율 향상, 신시술 도입)에 따른 도시 물순환 시스템 내 자원 사용 및 이동을 분석하였다. 에너지 인텐시티는 전체 도시 물순환 시스템, 상수 시스템, 하수시스템에서 각각 2.334 kWh/m³, 1.029 kWh/m³, 1.024 kWh/m³를 나타내었으며, 용수사용, 담수화, 재이용 과정에서는 매우 높은 값이 나타났다. 에너지 인틴시티의 값은 외부 영향에 크게 좌우되는 것으로 분석되었으며, 운영효율의 변동에 따라서 물 및 에너지 사용량은 변화하였지만 에너지 인텐시티의 변동은 크지 않았다. 이에 따라 도시 물순환 시스템을 넥서스 관점에서 관리하기 위해서는 에너지 인텐시티 이외에 물 및 에너지 사용량, 유수수량 관점 에너지 인텐시티, 사용수량 관점 에너지 인텐시티를 종합적으로 고려하는 것이 필요하다.

• Resources Recycling
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• v.26 no.4
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• pp.19-25
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• 2017

The ways of producing metal silicon include a carbon reduction method, a plasma reduction method, and a thermite reaction method. The carbon reduction process produces metal silicon by metallurgical refining. The carbon reduction method is produced by adding a raw material mixed with quartz and coke to an electric arc furnace which is for carbon reduction. The cost of high energy costs and environmental protection facilities is an issue when producing metal silicon using electric arc furnaces. For this reason, there is no metal silicon production facility in Korea yet. Therefore, the optimal manufacturing conditions by the carbon reduction method are being studied through the experimental facilities by the companies and research institutes. The present study investigated the change of metal silicon purity according to the purity of silicon when extracting metal silicon using the thermit reaction, which has a relatively lower manufacturing cost than the carbon reduction method.

• Journal of Korean Society of Archives and Records Management
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• v.1 no.1
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• pp.53-67
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• 2001

The idea of the vertical filing had been introduced in Japan at the beginning of the 20th century. This is regarded as a root of the management of business records and office works. After the Secund World War, The Occupied Army introduced the American method of the document management and the method as the filing system had been generalized among many offices. However, the filing method bad been regarded the needed skills for clerical staff. The business documents and records have increased in volumes and recognized their value as information resources in business and management. These movements have become a good grounding in introducing and development of records management. To spread the idea and method of records management in business offices, it is required that academic research and training systems must be developed and established. In such situation, The Records management Society, Japan has been established in1989 and the graduate corse on records management has been established in Surugadai Univ. in 1999. Those are the center of research and studying activities on records management in Japan.