• Title/Summary/Keyword: 예산 추정

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Valuation of Han River Waterside Landscape with a Double-bound Dichotomous Choice Model and Policy Implications: Focused on the Exponential Willingness to Pay Model (이중양분선택법에 의한 한강 수변 경관의 가치 추정과 그 시사점 -지수지불의사 모형을 중심으로-)

  • Han, Taek-Whan;Hong, Yiseok;Park, Chang Sug
    • Environmental and Resource Economics Review
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    • v.22 no.1
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    • pp.179-214
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    • 2013
  • This paper estimated the value of waterside landscape and ecosystem of Han River basin with a double-bound dichotomous choice type of CVM. We used the exponential willingness to pay model to represent the nonnegative willingness to pay. This model is found to be especially important in analyzing a double-bound dichotomous choice model. The total willingness to pay was estimated as 705.5 billion won per annum. This suggests that current budget size for water quality and ecosystem conservation for Han River needs to be expanded.

An Efficient Estimation of Local Area Unemployment Rate Based on Small Area Estimation (소지역 추정법을 이용한 효율적인 지역 실업률 추정)

  • Kim, Soo-Taek
    • The Korean Journal of Applied Statistics
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    • v.24 no.6
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    • pp.1129-1138
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    • 2011
  • Small area estimation has received significant intention in recent years due to a growing demand for reliable local area statistics. Traditional area-specific direct estimates based solely on sample survey data in the areas of interest do not provide adequate small area precision; however, design-based indirect local area estimators borrow strength from sample observations of related areas to increase the effective sample size. Design-based indirect estimation methods such as synthetic and composite estimators are considered to adjust local area unemployment rate estimates in the Korean Economically Active Population Survey. This study suggests an efficient alternative to minimize the cost to construct the unemployment rate of a local area through simulation under the condition that we can maintain a certain level of CV for the estimates. We obtained the results that the composite estimators using a sample size greater than 10 are more stable and significant at the level of CV 25% in our design scheme.

A Software Architecture Cost Estimation Method to Support Architecture Evaluation with Consideration of Cost (비용을 고려하고 아키텍처 평가를 지원하는 소프트웨어 아키텍처 비용 추정 기법)

  • Choue, Si-Ho;Lee, Jun-Ha;Park, Soo-Yong
    • Journal of KIISE:Software and Applications
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    • v.37 no.2
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    • pp.95-103
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    • 2010
  • Improving the competitiveness of software products in the market involves procuring the means to design software architecture that deliver qualities necessitated by stakeholder requirements within allocated budget, thereby improving the cost-effectiveness of the end product. Currently, software architecture evaluation methods are used to predict and review qualities inherent in software architecture designs and to choose a candidate architecture that delivers desired qualities. Existing software architecture evaluation methods, however, fail to address the cost considerations dependent on the architecture chosen for product implementation. In this paper we suggest a cost estimation method for software architecture which adapts the cost drivers in the software cost estimation model COCOMO II to support cost estimation during architecture evaluation. The suggested method can be performed in coordination with existing software architecture evaluation efforts and supplements existing architecture evaluation techniques with guidelines for identifying and evaluating cost drivers in candidate software architectures without incurring extra overhead. The accuracy of the cost estimation using the suggested method is verified through application of the method to the architecture candidates used in RPS (Robot Patrol System), a surveillance embedded system.

Assessment of the Willingness to Pay for Forest Management in the Upstream for Water Quality Improvement within the Han River Watershed (수질개선을 위한 한강 수계 상류지역 산림관리 지불의사금액 추정)

  • Kim, Dong-Hyun;Kim, Chul-Sang;Lee, Ho-Sang;Park, Kyung-Seok;Mun, Ji-Min;Jeon, Hyon-Sun
    • Journal of Environmental Policy
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    • v.14 no.2
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    • pp.49-72
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    • 2015
  • Forests in the upstream contributed to improve the quality of water resources for the residents downstream. However, upon structural examination of how the Han River Watershed Management Fund was spent, it became apparent that the fund was not spent toward forest management in the upstream. An additional budget must be allocated if the Watershed Management Committee is to contribute to the management of the upstream forests with such awareness. Therefore, the aim of the study was to assess the willingness to pay and to calculate of budget for forest management in the upstream for water quality improvement. Three hundred surveys on watershed beneficiaries were conducted using biased sampling method. The result was analyzed with conditional logit model and mixed logit model. Forest management, a target variable, was found to have statistical significance. Based on this result, the size of the expected budget was estimated to be minimum 20,526 million won to maximum 20,928 million won.

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A Study of Economic Assessment of Urban Park Management by Using Contingent Valuation Method - The Case of Busan APEC Memorial Park - (가상평가법(CVM)에 의한 도시공원의 관리운영에 대한 경제적 가치평가에 관한 연구 - 부산시 APEC기념공원을 대상으로 -)

  • Kim, Yeong-Ha;Park, Seung-Burm
    • Journal of the Korean Institute of Landscape Architecture
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    • v.42 no.2
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    • pp.19-32
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    • 2014
  • This study evaluated economic value recognized by the residents for the pleasant urban park management using contingent valuation method(CVM) to APEC Memorial Park in Pusan in terms of private fund development for the management of the city park. As a result, the estimated amount payable by each household for the management of APEC Memorial Park in Busan was between 5,673 won and 8,358 won. If such amount is expanded to households in park hosting area, it was 2.2~2.3 times of the park management budget in 2012, which demonstrates the willingness to pay (WTP) of residents for pleasant park was higher than the management budget. Social factors of respondents affecting WTP for city park management operation included age, educational level and income level. Those with high age and high education level had higher WTP. And, WTP was much affected by the use of park and recognition of residents. In particular, those with high frequency in the use of parks had higher WTP, and the users with more than once per week had 1.1 times higher WTP than overall WTP. Then, the satisfaction of park rather than recognition of necessity of park had led to higher WTP. Accordingly, it is necessary to manage park facility management and use program operation to enhance park satisfaction and it is also required to develop a park culture distribution policy to link such recognition to donation.

A Study on the Cost Estimation Model in the military logistics- Focus on the military clothing (국방 물류비용 추정 모델에 관한 연구 - 육군 피복류 중심으로 -)

  • Park, Jin-Woo;Kang, Sung-Jin
    • Journal of the military operations research society of Korea
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    • v.32 no.2
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    • pp.1-20
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    • 2006
  • In modern marketing environment, we are more interested in logistics as industrial structure is complicated and globalized. Most companies focus on reducing the cost price. So a lot of companies study on cost estimation logistics. However, it Is very difficult to estimate the cost of logistics. Thus they mainly use linear method such as the simple distance of transportation. This study defines the cost of logistics, structure & network of military logistics and proposes the costing estimation model in the logistics. We apply to battle shoes which are the main clothing in the military. In the result, we found some differences on the rate of cost structure between military and civil companies. This study can be used directly to the decision making for optimal military logistics alternatives and contribute to the efficient operation of military budget.

A Simulation Model Development to Analyze Effects on LiDAR Acquisition Parameters in Forest Inventory (산림조사에서의 항공라이다 취득인자에 따른 영향분석을 위한 시뮬레이션 모델 개발)

  • Song, Chul-Chul;Lee, Woo-Kyun;Kwak, Doo-An;Kwak, Han-Bin
    • Proceedings of the Korean Association of Geographic Inforamtion Studies Conference
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    • 2008.06a
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    • pp.310-317
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    • 2008
  • Although aerial LiDAR had been launched commercially several years ago, it is still difficult to study data acquisition conditions and effects with various datasets because of its acquisition cost. Thus, this research was performed to study data acquisition conditions and effects with virtually various datasets. For this research, 3D tree models and forest stand models were built to represent graded tree sizes and tree plantation densities. Also, a variable aerial LiDAR acquisition model was developed. Then, through controlling flight height parameter, one of the data acquisition parameters, virtual datasets were collected for various data acquisition densities. From those datasets, forest canopy volumes and maximum tree heights were estimated and the estimated results were compared. As the results, the estimated is getting closer to the expected during the data acquisition density increase. This research would be helpful to perform further studios on relations between forest inventory accuracy and LiDAR cost.

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Developing a method to estimate vehicle speeds in a low-cost vehicle detector with an inclined sensor (사선형 센서를 이용한 저가 검지장비의 차량속도 추정방법 개발)

  • Kim, Hyoung-Soo;Oh, Ju-Sam
    • International Journal of Highway Engineering
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    • v.11 no.1
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    • pp.59-67
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    • 2009
  • With the development of high-cost vehicle detectors, low-cost detectors have also been studied due to the advantage that more detectors are provided within limited budgets. This study proposed a method to estimate vehicle speeds using vehicles' track data from auto manufacturers and time stamps obtained when vehicles' tires pass an inclined sensor (here, a tape switch sensor). In speed estimation, small vehicles and large vehicles is distinguished according to the ratio of time stamps for a wheelbase and a rear track obtained from a tape switch sensor. In particular, speed estimation can be adjusted through a parameter to determine vehicles' size so as to take into account location properties such as vehicles' classification ratio. The low-cost vehicle detector with an inclined sensor proposed in this study is expected to be widely utilized to monitor traffic conditions thanks to low cost.

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Health Effects and Social Benefit of Residential Radon Reduction (주택 라돈 저감의 건강 효과와 사회적 편익)

  • Yongjoo Kim
    • Environmental and Resource Economics Review
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    • v.31 no.4
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    • pp.505-529
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    • 2022
  • Radon is a radioactive gas that causes lung cancer deaths. The contingent valuation method (CVM) is used to estimate the value of a statistical life(VSL) of 2.054 billion won for the death due to residential radon in Korea. Residential radon is assumed to have caused 2,330 deaths in 2020, of which the estimated social cost is 4.78 trillion won. When a national compulsory standard of 200Bq/m3 is set for residential radon concentration, the number of lives saved is estimated to be 691, leading to a social benefit of 1.42 billion won. This study reports the origin, characteristics and health risk of residential radon, and emphasizes the importance of a dramatic increase in the budget for residential radon reduction policies.

Estimation of flood peak discharge using flood marks (홍수흔적을 이용한 첨두홍수량 추정)

  • Lee, Tae Hee;Lee, Jung Hoon;Kang, Jong Wan;Roh, Youngsin
    • Proceedings of the Korea Water Resources Association Conference
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    • 2019.05a
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    • pp.75-75
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    • 2019
  • 첨두홍수량 자료는 홍수예경보 및 치수계획수립 등 하천관리에 있어서 매우 중요한 요소이다. 그러나 대규모 홍수가 발생 시 악천후가 동반된 기상상황이나, 현장 접근이 어려운 환경적 조건과 예산 및 인력 부족 등에 의한 불가피한 문제로 첨두홍수량을 측정하는데 어려움 있다. 따라서 일반적으로 수위-유량관계곡선식을 이용하여 첨두홍수량을 산정하지만 단순 고수위 외삽 추정을 통해 개발된 곡선식을 이용한 첨두홍수량 산정에 있어서는 주의가 필요하다. 이러한 경우 홍수가 지나간 후 현장조사를 통해 획득한 위치, 표고, 횡단면적 등 홍수흔적(flood marks)을 가지고 경사면적법(slope-area method)과 같은 간접적인 방법으로 첨두홍수량을 추정할 수 있다. 본 연구에서는 2018년 큰 호우사상이 발생한 내성천의 지류인 서천의 영주시(월호교) 지점과 남강의 산청군(하촌리) 지점에서 홍수흔적 조사를 통해 지점별 두 개의 단면을 선정하였다. 영주시(월호교) 지점의 두 단면 간 거리는 약 90m, 높이차는 약 0.21m로 조사되었고, 산청군(하촌리) 지점의 두 단면 간 거리는 약 330m, 높이차는 약 0.47m로 조사되었다. 경사면적법을 이용한 첨두 홍수량 추정에 적용된 조도계수는 '서천 하천기본계획(2014)', '남강 하천기본계획(2013)'에서 계획 홍수량 산정에 적용된 조도계수 0.029와 0.025를 적용하였다. 영주시(월호교) 지점은 2018년 9월 4일 발생한 호우사상의 첨두수위 5.59m에서 수위-유량관계곡선식을 이용하여 산정된 유량은 $1,127.8m^3/s$이고 경사면적법을 이용하여 추정된 유량은 $1,105.9m^3/s$로 약 -1.98%의 편차율이 발생하였다. 산청군(하촌리) 지점은 2018년 8월 26일 발생한 호우사상의 첨두수위 6.75m에서 수위-유량관계곡선식을 이용하여 산정된 유량은 $3,435.0m^3/s$이고 경사면적법을 이용하여 추정된 유량은 $3,233.3m^3/s$로 약 -6.24%의 편차율이 발생하였다. 경사면적법을 이용하여 추정된 첨두홍수량은 수위-유량관계곡선식을 이용하여 산정된 유량과 편차율이 지점별 ${\pm}10%$ 이내의 근사한 범위로 산정되었다. 따라서 경사면적법을 이용한 첨두홍수량 추정 방법의 적용에 있어서 적절한 것으로 판단된다.

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