• 농촌계획
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• 제28권4호
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• pp.69-81
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• 2022

The change in farmland price has almost always been focused on not only farmers but policy-decision makers; for farmers to get information before purchasing farmland; for policy-decision makers to use appropriate policy tools to stabilize the market. So far the change in farmland price has been calculated as a form of average change on a year-to-year base. Such calculations have become one of the causes which lead to misunderstanding of the farmland market because the year-to-year average change includes changes in price as well as changes in the number of trades and sizes of traded farmland. This paper is designed to suggest a proper method of building a price index for farmland as a tool to review the price change. We considered the applicability of several types of price indices and concluded that a Laspeyres-type price index is the most reasonable choice. A Laspeyres-type price index, however, has a shortcoming in which a reference year's weight may affect the whole period of an index. Thus, we also suggest two other weights, a three-year average including a reference year and a share of farmland. All indices show that farmland prices have risen significantly in recent 10 years. We hope that the indices will be developed into one of the government's formal statistics.

• 한국주거학회:학술대회논문집
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• 한국주거학회 2011년도 춘계학술발표대회 논문집
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• pp.285-289
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• 2011

he purpose of this study is to assess the effects of real estate policy on apartment price index in Seoul. To meet the research goal, this research reviewed real estate policy of the government from January of 1986 to August of 2010, and then it collected monthly apartment price index in 25 local districts of Seoul from January of 2003 to August of 2010. After 25 districts were grouped into 2 areas (14 districts in Gangnam and 11 districts in Gangbuk), the data of two areas were analyzed by using the SAS program, Cluster analysis with Ward method showed 3 clusters on each area, and with 6 clusters in total, the effects of real estate policy in the period were examined by using residual analysis. The analysis indicated two major shocks (one was from May to October of 2003, and the other was from March of 2006 to January of 2007), and the results showed that the intervention of government in the market had the asymmetric effects in bullish and bearish times. It implies that the market volatility is substantially influenced by irrational sentiments. Thus, it's suggested to devise the consumer sentiment index suitable in real estate market.

• 응용통계연구
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• 제22권3호
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• pp.635-651
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• 2009

사회가 민주화, 선진화되어감에 따라 합리적인 정책과정의 중요성이 강조되어 이른바, 증거기반 정책(evidence-based policy) 이 정책 분야에서의 중요한 화두로 떠오르게 되었다. 증거기반 정책, 그 중에서도 통계에 기반을 둔 정책에 관한 관심이 고조되고 있기는 하지만 구체적인 정책분야에서 통계가 어떻게 사용되고 있는지에 대한 구체적인 사례들이 소개된 것은 그다지 많지 않다. 본 연구의 목적은, 현재 국민은행이 작성하여 공표하는 주택가격지수가 구축, 발전되어 온 과정을 더듬으면서 구체적으로 통계가 어떻게 주택정책의 기반으로 활용되어 왔는지를 조명하는데 있다. 시기별 주택가격지수의 통계적 특징 및 문제점들을 지적하고, 이러한 문제점들이 개선되는 과정을 살펴본다. 아울러 주택가격지수가 구체적인 부동산 관련 정책과정에서 어떻게 활용 되는지를 소개한다.

• 한국경영과학회지
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• 제33권2호
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• pp.137-151
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• 2008

This paper deals with two shops dealing with single perishable product the fresh items are sold at a list price in the primary shop and the unsold items that have reached a certain allowed age are transferred to the secondary shop to be sold at a discounted price. It is assumed that the demand rates in two shops are Independent each other and can be expressed as a function of inventory level and price. With the objective of maximizing the profit under a Last-In-first-Out. (LIFO) issuing policy, we develop mathematical models for the following two cases : (1) opening primary shop only and (2) opening both primary shop and secondary shop. There are three decision variables, i.e., the reduced price in the secondary shop, the allowed age at the primary shop, and the order quantities at the primary shop. A solution procedure is developed based on tabu search and its validity is illustrated through a comparative study.

• 신재생에너지
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• 제17권2호
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• pp.1-8
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• 2021

We estimated the price range of electricity transactions under the prosumer system, considering the spread of renewable energy and the prospect of introducing a surplus power trading system between power consumers in Korea. The range (min/max) of power transaction prices was estimated by prosumers and consumers who could purchase electricity from utilities if needed. It is assumed that utilities purchased electricity from prosumers and consumers under a Time-of-Use (TOU) rate, trading at a monthly price. The range of available transaction prices according to the amount of power purchased from utilities and the amount of transaction power was also estimated. The price range that can be traded is expected to vary depending on variables such as the TOU rate, purchased and surplus power, levelized cost of electricity, etc.

• 정보기술과데이타베이스저널
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• 제6권2호
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• pp.115-130
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• 1999

The price structure of housing market varies depending upon market price policy rather than low or high price policy because of IMF. The object of this study is to develop an analysis system for analyzing housing market and its demand. The analysis system consists of four major categories: macro index analysis, market decision analysis, housing market analysis, and consumer analysis. We model each category by using a variety of techniques such as generalized linear model, categorical analysis, bubble analysis, drill-down analysis, price sensitivity meter analysis, optimum price index analysis, profit index measurement analysis, correspondence analysis, conjoint analysis, and multidimensional scaling analysis. Seoul apartment data is analyzed to demonstrate the practical usefulness of the system.

• Ocean and Polar Research
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• 제36권4호
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• pp.505-514
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• 2014

The development of deep seabed manganese nodules has been carried out with the aim of commercial development in 2023. It is important to forecast the price of the four metals (copper, nickel, cobalt, and manganese) extracted from manganese nodules because price change is a criterion for investment decision. The main purpose of the study is to forecast the price of four metals using the ARIMA model and VAR model, and calculate the MAPE to compare a goodness-of-fit between the two models. The estimated results of the two models reveal statistical significance and are in keeping with economic theory. The results of MAPE for goodness-of-fit show that the VAR model is between 0.1 and 0.2, and the ARIMA model is between 0.4 and 0.6. That is, the VAR model is better than the ARIMA model in forecasting changes in the price of metals.

• 한국수자원학회논문집
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• 제40권11호
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• pp.869-876
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• 2007

본 연구는 수자원정책의 효율성 제고를 위한 판단 자료 제공을 목적으로 업종별 공업용수의 한계생산가치 및 공업용수의 가격탄력성을 추정하였다. 두 가지 형태의 생산함수를 설정하여 추정한 공업용수의 한계가치 및 가격탄력성을 추정 결과를 보면 공업용수의 한계가치는 산업별로 차이가 있으나 공업용수의 평균 가격에 비하여 매우 큰 것으로 추정되었으며 가격탄력성 추정결과는 가격 현실화 정책 효과가 있음을 보여주고 있다.

• 자원ㆍ환경경제연구
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• 제27권4호
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• pp.639-666
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• 2018

This paper analyses the investment options of groundwater development project under water price uncertainty. The optimal investment threshold price which trigger the investment are calibrated base on monopolistic real options model. Stochastic dynamic model is set to reflect the uncertainty of water price which follows the GBM (Geometric Brownian Motion) process. Our finding from non-cooperative investment decision model is that uncertainty of water price could deter the groundwater investment by considering the existence of option values. For policy markers, it is easy to manage 'charges for utilization of groundwater' rather than 'performance guarantee ratio' when managing groundwater investment with pricing policy. And it is necessary to make comprehensive and well-designed policies considering the characteristics of regional groundwater reservoir and groundwater developers.

• KDI Journal of Economic Policy
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• 제33권1호
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• pp.1-44
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• 2011

본 연구는 교역조건 충격이 경기 변동의 주요 동인으로 작용하는 동시에 비교 역재 부문이 존재하는 소규모 개방경제를 대상으로, 이론모형을 바탕으로 한 모의실험의 방법론을 이용하여 다양한 통화정책이 갖는 사회후생상의 함의를 정량적으로 검토한다. 본 연구의 주요 분석 결과는 다음과 같다. 첫째, 교역조건 충격이 경기 변동을 야기하는 주요 동인으로 작용하는 경제의 경우에는, 비교역재 물가 인플레이션 타깃팅이 소비자 물가 인플레이션 타깃팅이나 고정환율제도와 비교하여 보다 높은 사회후생 수준을 제시할 수 있는 것으로 나타났다. 둘째, 비교역재 물가 인플레이션 타깃팅의 사회후생 개선효과는 교역조건 충격의 변동성이 커질수록, 반면 지속성은 낮을수록 확대되는 것으로 나타났다. 마지막으로 비교역재 물가 인플레이션 타깃팅의 사회후생 증진효과는 수입재 가격 변동보다는 국내 실질한계비용에 직접적으로 영향을 미치게 되는 수출재 가격 변동과 관련이 있는 것으로 드러났다.