• Title/Summary/Keyword: Supply per demand

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Mineral Economic Index and Comprehensive Demand Prediction for Strategic Minerals: Copper, Zinc, Lead, and Nickel (자원경제지표와 주요 금속의 중.장기 수요 예측 -아연, 납, 구리, 니켈을 중심으로-)

  • Choi, Soen-Gyu;Kim, Chang-Seong;Ko, Eun-Mi;Kim, Seong-Yong;Jo, Ho-Young
    • Economic and Environmental Geology
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    • v.41 no.3
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    • pp.345-357
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    • 2008
  • Korea has been one of the top ranked countries in the per capita and total consumption of Cu, Zn, Pb, and Ni since economic development based on manufacturing industries. The current instability of mineral demand and supply in Korea is likely to continue or exacerbate in accordance with economic growth in developing countries such as BRICs. Korea needs to increase the self-development portion of strategic mineral resources including Cu, Zn, Pb, and Ni. Our analysis of mineral demand and supply data predicts a long-run instability of supply and demand for main minerals used in the Korean manufacturing industries, and suggests a long range government policy for stable supply of core mineral resources.

An analysis on the effects of higher power rates on supply price and power savings for Korean manufacturing sector (산업 전력요금 인상의 공급가격 및 전력수요 절감 효과 분석:국내 제조업 부문을 대상으로)

  • Lee, Myunghun
    • Environmental and Resource Economics Review
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    • v.23 no.1
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    • pp.43-65
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    • 2014
  • In this paper, we test for allocative efficiency of productive inputs including electricity and measure the divergence between the actual and optimal level of electricity for the chemical products, which is a relatively highly electricity-intensive sector in Korean manufacturing industries, by estimating a shadow cost function. Supposing cost minimization subject to market prices was achieved, we derive the price elasticities of demand for each input and simulate the impact of a 10% increase in power rate on its demand and supply price by estimating jointly a cost function with an inverse supply relation. The null hypothesis of allocative efficiency of inputs is rejected over the period 1982-2006. On average, electricity is used more than optimal level by 98% per year. The demand for electricity decreases by 11.4%, and supply price, on average, falls by 0.08%, other things being equal.

Analysis of the Affecting Factors to the Peak Factor in Water Supply Facilities (우리나라 상수도시설의 첨두부하 영향요소 분석)

  • Hyun, In-hwan;Lee, Che-in
    • Journal of Korean Society of Water and Wastewater
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    • v.18 no.1
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    • pp.49-58
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    • 2004
  • This study is to analyze the affecting factors to the peak factor in the drinking water supply Facilities. The peak factor is a very important element to determine the capacity of the water supply facllities. Several factors such as Population served, average day water demand, ratio of domestic water use, ratio of affairs & business water use and water use per capital per day were selected as the affecting factors in this study. In this study, peak factor characteristics for Korean facilities were compared with those for Japanese ones. As a result, non-exceedance probability was suggested as the designing method for the peak factor. Also, the 50% non-exceedance probability values and the 90% values based on the 1998-1999 data were suggested in this study.

A Study on the Long Term Demand Estimation for the Livestock Products (축산물(畜産物) 수요(需要)의 장기여측(長期予測)에 관(關)한 연구(硏究))

  • Kim, Chul Ho
    • Korean Journal of Agricultural Science
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    • v.10 no.2
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    • pp.393-405
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    • 1983
  • The demand for livestock and poultry products including beef, pork, chicken, egg and milk whose income elasticities are relatively higher than other staple foods, has been increased significantly during the past two decades in response to the remarkable increase in per capita GNP. This trend will be continued during the fifth and the sixth five year economic development plan period beginning with 1982. The annual GNP growth rate will be 7.5% on the average during the next 10 years. It is greatly needed to estimate the demand for beef, pork, chicken egg and milk and to study the feasibilities of domestic production of livestock products for the formulation of adequate policies in order to equate the consumption and the production during the 1980s. So this study reviewed the possible changes in the food consumption patterns during the 1980s, estimated the demand for beef, pork, chicken, egg and milk by using empirical demand functions and finally made suggestions for the formulation of long term price stabilization policies for each livestock, poultry and dairy products through the equilibrium of the quantity of demand for and supply of the products. There are many factors affecting the demand for meats, but this study considered own price, prices of supplements and substitutes and per capita income as the independent variables in the demand equations. It was found that it's own price and income were most significantly affecting factors among others and the degree of substitution effects were remarkably different among the products. According to the meat demand derived in this study, per capita consumption of beef, pork and chicken in the base year 1982 was 11.2kg for total meat, 2.5kg beef, 6.0kg pork and 2.5kg chicken, 106 pieces egg, 15.1kg milk respectively, while those in 1991 were 19.3kg for total meat, 4.8kg beef, 9.6kg pork, 4.9kg chicken, 133pieces egg and 44.1kg milk. It is also predicted through this study that, when the level of production costs be maintained, the domestic production of pork and chicken will meet the demand for them during the fifth and sixth five year economic plan period. However, there will be chronic shortage of beef supply during the coming years. The annual import requirement will be 30,000tons to 40,000tons during the period. In order to stabilize the domestic livestock and poultry and dairy products market, the government should introduce measures to curb the increase in beef consumption by encouraging the consumption of pork and chicken. For this, the livestock production policy measures should be concentrated on : 1) the improvement of infrastructures of beef production by introducing advanced feeding and management technology, subsidies for the establishment of facilities and price support programs for farmers : 2) the development of dairy beef : 3) the reinforcement of the forecast systems for pork and chicken production and consumption.

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Analysis of Paper Demand-Supply in Korea (한국(韓国)의 지류(紙類) 수급분석(需給分析))

  • Park, Myong Kyu;Park, Suck Hee
    • Journal of Korean Society of Forest Science
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    • v.50 no.1
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    • pp.16-24
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    • 1980
  • The purpose of this study is to analyse the demand-supply structure and its trend of the paper production in Korea. The ratio of paper was calculated to analyse the demand-supply structure. The cross-section and the time series analysis were adopted to analyse the demand-supply trend. The results obtained are summarized as follows: 1. In consumption ratio of paper the board paper was the highest, in export ratio the print paper was the highest. 2. In 1979, the consumption of paper was 45kg/capita, which were very high value comparing with the level of gross national products in Korea. 3. The elasticity of income and price in paper consumption per capita was 1.67 and -0.73, respectively. The more the GNP increases, the more the industrial paper demand rises rapidly.

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An Estimation on the Market Size of Aqua-cultured Flatfish in Korea (양식 넙치 중장기 시장 규모 추정)

  • Kim, Bae-Sung;Kim, Chung-Hyeon;Cho, Jae-Hwan;Lee, Nam-Su
    • Journal of the Korea Academia-Industrial cooperation Society
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    • v.16 no.11
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    • pp.7781-7787
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    • 2015
  • The purpose of This paper is to address the development on supply-demand outlook model of aqua-cultured korean Flatfish and introduces a projection of supply-demand and market prices during 2015-2017 using developed model. The supply-demand outlook model is composed as a partial equilibrium model of Korean Flat fish. Each equation in the model is estimated by the econometric techniques. A reviews of the demand-outlook model stability is also carried out by the references based on RMSPE. MAPE, and Theil's inequality coefficients. According to the reference of RMSPE, the error rates of the forecasting values of the aqua culture area, culturing quantity, production quantity, market price show less than 4%, The production quantity and farm price are predicted respectively to be 42,561MT and 10,191KW per kg in 2017.

A Study of Water Budget Analysis According to The Water Demand Management (수요관리에 의한 물수급변화 분석)

  • Seo, Jae-Seung;Lee, Dong-Ryul;Choi, Si-Jung;Kang, Seong-Kyu
    • Journal of Korean Society of Environmental Engineers
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    • v.33 no.11
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    • pp.797-803
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    • 2011
  • In this study, we developed the assessment method that evaluate the water demand management and calculate the water saving volume using water use indicator, and developed the system to link the water saving volume that occur through demand management and water supply and demand. The results from this study, local governments with poor water conditions should be followed to improve the water supply. And, future water demand estimates should be even considering it. We calculated the water saving volume of the Geum River basin using K-WEAP (Korea-Water Evaluation And Planning System) and performed the water budget analysis. We found that the change of river flow, ground water level and reservoir water level, and it can be utilized for other demand.

Domestic and International Fertilizer Situation (화학비료(化學肥料)의 국내외(國內外) 수급사정(需給事情))

  • Han, Ki-Hak
    • Korean Journal of Soil Science and Fertilizer
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    • v.9 no.3
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    • pp.117-132
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    • 1976
  • Fertilizer has been played greately on the agricultural development as well as food production and agriculture has also promoted the development of fertilizer industry. There were, however, many difficulties between supply and demand of fertilizer throughout the decade. In this regard, this paper is involved with present situation and prospect of commercial fertilizers, in view of domestic and international scheme on resources, production, and demand within the limited information. Brief history of commercial fertilizer in Korea has outlined for the introduction and fertilizer consumption per unit area also discussed.

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Technical Efficiency of Medical Resource Supply and Demand (의료자원 공급, 수요의 성과 효율성에 대한 실증분석)

  • Chang, Insu;Ahn, Hyeong Seok;Kim, Brian H.S.
    • Journal of the Korean Regional Science Association
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    • v.34 no.2
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    • pp.3-19
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    • 2018
  • The objective of this study is to observe the efficiency of clinical performance on the supply and demand of medical resources in Korea. For the empirical analysis, we constructed the dataset on age standardized mortality rate, the number of physician, specialist, surgery, medical institution, ratio of general hospitals of 16 provinces in Korea from 2006 to 2013. The panel probability frontier model is employed as an analysis method and considered heteroscedasticity and autocorrelation of the error in panel data. In addition, the demographic and socioeconomic characteristics of the 16 provinces, unemployment rate, elderly population ratio, GRDP per capita, and ratio of hospitals in comparison to the general hospitals are used to find the effect on the technical efficiency of clinical performance on supply and demand of medical resources. The results are as follows. First, for the clinical performance, the supply side of human resources such as doctors and specialists and the demand side factors such as chronic illness clinic per unit population have a significant influence, respectively. Second, the technical efficiency of clinical performance on the supply and demand of medical resources of each input component was 59-70% in terms of clinical efficiency in each region. Third. estimates of technical efficiency of inputs that affect clinical performance showed a slight increase in all regions during the analysis period, but the increase trend decreased slightly. Fourth, the ratio of the elderly population and GRDP per capita have a positive influence on the technical efficiency of clinical performance on the supply and demand of medical resources. The difference of each efficiency by region is due to the regional differences of the input medical resources and the combination of them and the demographic and socioeconomic characteristics of the region. It is understood that the differences in technological efficiency due to the complexity of supply and demand of medical resources, demographic structure and economic difference affecting clinical performance by region are different.

Heuristic for Distribution Planning in Capacitated Multi-echelon Supply Chains (생산 능력 제한이 있는 다계층 공급사슬의 분배계획을 위한 발견적 기법)

  • Kwon, Ick-Hyun;Shin, Hyun-Joon;Kim, Sung-Shick
    • IE interfaces
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    • v.19 no.2
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    • pp.124-132
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    • 2006
  • The system under study is a single item, multi-echelon distribution system with a capacitated production facility. All the nodes at the downstream ends are demand-sites, i.e., ordered items are delivered to the customers from the node. Also any transshipment depots in the midstream can be demand-sites as well. For a given planning period, at each of demand-site, demand is forecasted and known. Our objective is to minimize the average system cost per period which is the sum of holding and backorder costs in the entire network. Due to the capacity restrictions, it is difficult to establish efficient distribution planning. To overcome such a difficulty and obtain a reasonable and better solution, we convert this problem into a single machine earliness and weighted tardiness scheduling. We propose a simple but cost-effective heuristic for this problem. The experimental results showed that the proposed heuristic obtained much better solutions compared with another approach.