• Ceramist
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• v.20 no.1
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• pp.103-118
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• 2017

1. 2014년도 우리나라 전체 폐기물 발생량은 146,607천 톤이며, 건설폐기물이 46.2%(67,644천 톤), 사업장 일반폐기물이 38.1%(55,914천 톤), 생활폐기물이 12.4%(18,219천 톤), 사업장 지정페기물이 3.3%(48,810천 톤)을 나타내고 있다. 2. 건설폐기물의 97.9%, 배출시설계 폐기물의 77.3%, 생활폐기물의 67.0%, 지정폐기물의 57.3%가 재활용되고 있다. 3. 2015년도 우리나라 시멘트산업에서 18,801천 톤의 순환자원을 재활용하였다. 폐기물이 6,136천 톤이고, 부산물이 12,665천 톤이다. 부산물은 11,000천톤이 제철슬래그이고, 1,600천 톤이 폐석고(탈황석고 중화석고)로 추정된다. 그리고 폐기물 6,136천 톤은 사업장 일반폐기물의 약 11.0%에 해당된다. 4. 시멘트 톤당 순환자원 사용량(재활용 원단위)은 일본이 400kg/톤 이상이고 우리나라는 300kg/톤 대를 나타내고 있다. 일본이 우리나라보다 재활용량/톤이 많은 이유를 다음에서 찾을 수 있다. (1) 고품위 석회석 원료 (2) 법 제도(지원금 포함) 5. 원료 대체율의 산출은 다음 두 산출방법으로 나타낼수 있다. (1) 이론적인 원료 상한 대체량에 대한 실제 원료 대체량 (2) 이론적인 원료 조합량에 대한 실제 원료 대체량 2015년도 우리날 전체 원료 대체량(17,770천 톤)은 (1)에 의한 대체율 : 71% (2)에 의한 대체율 : 27% 6. 자동차 슈레더 더스트(ASR)를 시멘트산업에서 자원화 하게끔 ASR처리의 보완 및 법적지원(지원금 포함)이 요망된다. 7. 부산물 및 폐기물의 자원화는 시멘트산업에서의 이용이 가장 우수한 장점을 갖추고 있다. 그러므로 시멘트산업에서 폐기물의 자원화를 적극 추진하게끔 제도의 보완 및 시설지원 등 정부의 대책수립이 간절하다.

• Journal of the Korean Solar Energy Society
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• v.22 no.4
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• pp.97-106
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• 2002

The purpose of this study is to analyze the life cycle cost of primary cooling system by systematic support cost. Life Cycle Cost(LCC) is the process of making an economic assessment of an item, area, system, or facility by considering all significant costs of ownership over an economic life, expressed in terms of equivalent costs. The essence of life cycle costing is the analysis of equivalent costs of various alternative proposals. In order to select economical primary cooling system in early heat source plan stages, the research investigates cost items and cost characteristics during project process phases such as planning/design, construction, maintenance /management, and demolition/sell phases. The study also analyze the life cycle cost by capacity leading to suggest the most economical primary cooling system by systematic support cost.

• Journal of the Korean Society of Hazard Mitigation
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• v.2 no.4 s.7
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• pp.77-85
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• 2002

Korean government compensates 100% for natural disaster relief fund to public facilities, and provides 70 percents to crops through unit price calculation. This study estimated disaster damage according to the standard production cost of crops. Disaster damage was estimated according to the unit price of crops. Those crops are lettuce, pumpkin, red pepper, spinach, tomato and cucumber. As a result, the ratio of natural disaster relief fund to damage was revealed as $3.3%{\sim}13.8%$ with present method, 5.7%{$\sim}34.1%$ with suggested method. Suggested method is the first one considered damage ratio of crops, producer price and raising period.

• Korean Chemical Engineering Research
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• v.56 no.1
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• pp.6-13
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• 2018

Utilizing the heat of cooling water discharge of coal-fired power plant, pipeline investment costs for businesses that supply heat to agricultural facilities near power plants increase in proportion to installation distance. On one hand, the distance from the power plant is a factor that brings difficulties to secure economic efficiency. On the other, if the installation distance is short, there is a problem of securing the heating demands, facility houses, which causes economical efficiency to suffer. In this study, the economic efficiency of 1km length of standard heat pipeline was evaluated. The sensitivity of the heat pipe to the new length variation was analyzed at the level of government subsidy, amount of heating demand and the incremental rate of pipeline with additional government subsidy. As a result of the analysis, it was estimated that NPV 131 million won and IRR 15.73%. The sensitivity analysis showed that NPV was negative when the length of heat pipe facility exceeded 2.6 km. If the government supports 50% of the initial investment, the efficiency is secured within the estimated length of 5.3 km, and if it supports 80%, the length increases within 11.4 km. If the heat demand is reduced to less than 62% at the new length of the standard heat pipe, it is expected economic efficiency is not obtained. If the ratio of government subsidies to initial investment increases, the elasticity of the new bloc will increase, and the fixed investment, which is the cost of capital investment for one unit of heating demand, will decrease. This would result in a reduction in the cost of production per unit, and it would be possible to supply heat at a cheaper price level to the facility farming. Government subsidies will result in the increased economic availability of hot plumbing facilities and additional efficiencies due to increased demand. The greater government subsidies to initial investment, the less farms cost due to the decrease in the price per unit. The results of the study are significant in terms of the economic evaluation of the effectiveness of the government subsidy for the thermal power plant heat utilization project. The implication can be applied to any related pilot to come.

• Journal of the Korean Geographical Society
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• v.43 no.5
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• pp.743-760
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• 2008

This paper attempts to examine how Maryland's Priority Funding Area (PFA) designation and incentive program has influenced the location of infrastructure investment. Is Maryland's PFA program reducing sprawl? In order to answer this question, data on the water and sewer infrastructure investments between 1997 and 2003 are collected from each county in the state. Empirical works are composed of two parts. The first part of the empirical analysis examines the pattern of water and sewer investment that has gone in and outside the PFAs between 1997 and 2003 at the county level. The second part of the empirical study shows at a county level the conditions that influence decisions to go in and outside the PFA. Regression models with various specifications are used for the analysis. The findings reveal that state fund has worked as designed. The coefficients of state fund in all estimations are significant and have expected signs implying that a county with more state fund tends to invest more in PFA as less outside.

• Korean Journal of Social Welfare Studies
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• v.47 no.3
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• pp.35-60
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• 2016

This study analyzes the unequal distributional effect of threesome of family policy(child benefit, childcare services and parental leave) focusing on family income, mother's status in labor market in Korea. To measure the unequal distributional effect of family policies, this study used the quantile analysis. The results of this study are as follows. First, in terms of childcare service and parental leave, there is some difference of the rate of use by family income and mother's status in labor market. Second, total public fund for childcare services, child benefits and parental leave are high in fourth income quintile, and mothers work regularly. Third, public fund is high in fourth income quintile, dual earners, mothers work regularly, the family has many number of child, and is high educational level of parents. Finally, the results of quantile regression show the biggest factors of unequal distribution of family policy are mother's stable work and it deepens the inequalities and differences. Based on these results, this article suggests that more equal right to access and use family policy regardless of the type of employment, adequate minimum income through income transfer, and universal application of the policy.

• The Journal of the Korea Contents Association
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• v.22 no.8
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• pp.527-541
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• 2022

The purpose of this study is to explore the economic hardship experiences of low-income single-parent families by COVID-19 to find ways to improve after COVID-19. To this end, 10 single parents with children under the secondary school age were recruited through snowball sampling method and in-depth interviews with economic activities, income, expenditure, and economic life. As a result of the study, participants suffered from unemployment and the disappearance of extra income activities in the early stages of COVID-19, additional expenses incurred by children's food and increased utility bills. In addition, it was recognized that COVID-19 has come to be more difficult and unequal to single-parent families of low-income women. It was found that the temporary living difficulties were resolved with disaster support funds, and it was helpful in the short term by spending according to priorities such as overdue monthly rent, food expenses, children's academy expenses, and purchasing home appliances. However, it was recognized that disaster support funds were inappropriate for customized disaster support and long-term and selective support was necessary. In the conclusion, to improve economic problems after COVID-19, it proposed measures to improve social welfare policies and practices

• 재활용회보
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• s.2
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• pp.48-52
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• 2004

우리나라는 약 15년 전부터 종이팩 재활용이 별도로 시도되어 국민의 홍보와 더불어 많은 시민단체 및 환경단체들의 환경과 호응 하에 활발히 진행되어 오다가 지난해에는 종이팩이 EPR제도의 재활용의무품목으로 지정되어 재활용분야에 지원금 등 인센티브제도가 적용되고 있다. 아직까지 우리나라의 종이팩 재활용율은 상당히 낮은 편인데, 근래에 배출 및 수거 쪽으로부터 재활용에 대한 열의가 오히려 식어가고 있는 것 같아 뜻있는 사람들의 마음을 안타깝게 하고 있다. 이에 월간 ‘재활용’지에서는 다시 한 번 현장의 문제점을 진단하여 방안을 제시하고 관련 분야의 인식을 고취시켜 종이팩 재활용율을 향상시키고자 하여 이번 2월호에 종이팩 재활용에 관한 특집과 더불어 업체탐방 코너에 국내에서 종이팩 재활용을 가장 많이 수행하고 있다는 삼정펄프(주)를 소개하고자 한다.

• Proceedings of the KIEE Conference
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• 2008.11a
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• pp.357-359
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• 2008

부하관리는 여름 하계시 냉방부하의 집중으로 인해 나타나는 피크발전설비의 확대를 막고 부하의 평준화를 통해 부하율을 향상시켜 발전효율을 향상하고자 하는 것이다. 이러한 부하관리제도는 크게 두 부분으로 나누어서 요금제도와 부하관리기기 지원제도로 나누어진다. 이 중에서 요금제도는 자율절전 하계휴가보수 지원제도가 있다. 본 논문에서는 이러한 필요성에 따라 부하관리요금제도에서 지원금 산정 및 절감효과 산정의 기준이 되는 기준부하산정에 대한 표준화 방안 수립에 대한 결과만을 수록하고자 한다.

• Proceedings of the KIEE Conference
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• 2007.11b
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• pp.273-275
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• 2007

This paper analyzes the customer behavior on high efficiency inverter program in terms of rebate levels. The importance of high efficiency DSM programs has been more and more increased after deregulation. Especially, the inverter program is one of the most high efficiency DSM programs, so this paper presents proper rebate levels in terms of both participants and non-participants to promote diffusion of the inverters.