• Title, Summary, Keyword: supply shortage effect

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A Study on the design and evaluation of connection pipes for stable water supply (용수공급 안정화를 위한 연계관로 설계 및 평가)

  • Chang, Yong-Hoon;Kim, Ju-Hwan;Jung, Kwan-Soo
    • Journal of Korean Society of Water and Wastewater
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    • v.26 no.2
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    • pp.249-256
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    • 2012
  • The paper describes a design methodology that can select a proper reliability factor and apply the selected reliability factor into the real water distribution system. Reliability factors which are used for the assesment of water supply networks, can be categorized by a connectivity, a reachability, an expected shortage and an availability. Among these factors, an expected shortage is the most proper reliability factor in the aspect of economic evaluation. Therefore, the expected shortage is applied to draw a water supply reliability into Changwon water supply systems. And the economic pipe diameter can be determined as 600mm for a connection pipe in the pipe network from the estimation of the expected shortage. Also, a quantitative effect of the connection pipe can be expressed in terms of the reduction, which is estimated by the expected shortage of 30,269$m^{3}$ from 68,705$m^{3}$ at initial condition to 38,436$m^{3}$ under the connected condition with the diameter 600mm pipe.

The Supply Shortage Effects of Oil Refinery Industry in Korea (국내 정유산업의 공급지장효과 분석)

  • Cho, Yong-Cheol;Lee, Yong-Hwan;Yoo, Seung-Hoon
    • Journal of Energy Engineering
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    • v.24 no.3
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    • pp.164-172
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    • 2015
  • As the petroleum products produced from the Oil refinery industry (ORI), a national key industry in Korea, are supplied to other industries as an intermediate goods, the supply shortage of ORI has a large impact on the national economy. This paper attempts to analyze the supply shortage effects which are defined as the negative impact of one won of supply failure in the ORI on the production of other industries. To this end, an inter-industry analysis using an input-output (I-O) table describing inter-industry flow of intermediate goods is applied. More concretely, the supply-driven model is employed over the period 1990-2012. In addition, the results are compared with those for shipbuilding, semiconductor, and steel industries. The results show that the supply shortage effects are computed to be 0.9205 won when using 2012 I-O table. More specifically, the supply shortage effects on chemical products and transportation industries are computed to be 0.2113 and 0.1140, which are relatively large, The supply shortage effect of ORI is smaller than that of steel industry (1.4131 won), but larger than that of shipbuilding industry (0.0586 won) and that of semiconductor industry (0.1111 won).

Role of the Korea Media Industry in the Nation Economy Analysis (국내 미디어산업의 파급효과 분석)

  • Min, Yong-Sik;Lim, Eung-Soon;Jung, Kun-Oh
    • The Journal of the Korea Contents Association
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    • v.10 no.1
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    • pp.247-255
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    • 2010
  • The media industry is becoming more important around the world and there are changes over this industry. Therefore this is the time that the economic impacts is needed about media industry. This study attempts to examine the economic impacts of the media industry using an inter-industry analysis. Specifically, the study investigates production-inducing effect, value added inducing effect and employ-inducing effect of the media industry based on demand-driven model and the study deals with supply shortage effect and sectoral price effect of the media industry by using supply-driven model and Leontief price model. The results of this analyses are presented; 0.5461 won in production-inducing effect, 0.3143 won in value added inducing effect when 1 won is produced by media industry, 5.0459 persons in employ-inducing effect when 1 billion won is produced, 1 won of supply shortage in this industry results 0.7353 won in supply shortage effect which affect the other industries. Sectoral price effect is 0.2389% due to the 10% increase of price.

Analysis of Emergency Water Supply Effects of Multipurpose Dams Using Water Shortage Index (용수부족지표를 이용한 다목적댐의 비상용수 공급 효과 분석)

  • Lee, Gwang-Man;Yi, Jaeeung
    • Journal of Korea Water Resources Association
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    • v.45 no.11
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    • pp.1143-1156
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    • 2012
  • One of the important purposes of most water resources systems is to prevent from drought damages. However, there are uncertainties in water supply plans from a reservoir due to factors such as limitation of available data, inaccuracy of surveyed data, unsuitability of analysis method, and climate change. In actual operating process, severe drought exceeding the water supply capability makes the normal water usage difficult. In Korea, however, alternative water source such as a development of new water project is very limited in case of water shortages due to drought. Especially, since there is no standard to evaluate the water supply effect considering severe drought damages, it is difficult to prepare the practical measures. In this study, water shortage events of existing multipurpose reservoirs are analyzed and the method of using low-storage emergency water supply is studied by using Water Shortage Index (WSI). The water shortage events are analyzed and the effect of water shortage decrease is evaluated using the existing inflow data of multi-purpose reservoirs. The results show that Imha, Daechung, Hapchon and Namkang reservoirs are highly vulnerable to the severe drought and required to develop additional emergency water source.

Comparison and discussion of water supply and demand forecasts considering spatial resolution in the Han-river basin (분석단위 세분화에 따른 한강권역의 물수급 분석 비교 및 고찰)

  • Oh, Ji-Hwan;Kim, Yeon-Su;Ryu, Kyong Sik;Bae, Yeong Dae
    • Journal of Korea Water Resources Association
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    • v.52 no.7
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    • pp.505-514
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    • 2019
  • Our country is making efforts to manage water resources efficiently. In the future, It is necessary to develop a plan after subdividing the basin considering regional problems and water use, topographical and climatic characteristics. This study constructed water supply and demand system based on the standard watershed unit for water shortage evaluation considering spatial resolution. In addition, water shortage were calculated and compared using the MODSIM model in the Han-river basin. As a result, the average water shortage occurring during the 49 years (1967-2015) was 129.98 million $m^3$ for the middle watershed unit and 222.24 million $m^3$ for the standard watershed unit, resulting in a difference of about 2.1 billion m3. However, the trends and distribution of water shortage occurrence were very similar. The reason for this is that, in the case of the Middle watershed unit analysis, water shortages are calculated for the demand for living, industrial, and agricultural water for the representative natural flow value, assuming that all the water can be used in basin. The standard basin unit analysis showed that the difference between the fractionated supply and demand resulted in a large water shortage due to the relatively small amount of available water, and that the main stream did not show water shortage due to the ripple effect of the return flow. If the actual water use system is considered in the model as well as the subdivision of the spatial unit, it will be possible to evaluate the water supply and demand reflecting the regional characteristics.

The Major Ripple Effects of the Logistics Industry (Using a MRIO(Multi-Regional Input-Output) Analysis) (물류산업의 주요 경제적 파급효과분석 (MRIO를 이용하여))

  • Choe, Yeong-Yun;Kim, Chan-Seong;Park, Min-Cheol;Seong, Hong-Mo;Sin, Seung-Jin
    • Journal of Korean Society of Transportation
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    • v.28 no.1
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    • pp.107-114
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    • 2010
  • This study aims to identify the impact of the logistics industry on the Korean national economy. To do this, we used a MRIO table provided by the Bank of Korea which includes inter and intra regional relationship of the production and consumption for 6 areas - the Seoul Metropolitan, Gangwon, Chungcheong, Jeonra, Gyeongbuk, Gyeongnam area, but an original MRIO table was recomposed of 29 sectors focused on logistics industry for the purpose of this study. we analyzed producing-inducing effects, supply-shortage effects and inter-industry linkage effects based on logistics industry by region and industry. As a result, the logistics industry has more supply-shortage effect rather than production-inducing effect and has a higher ripple effect on the automotive in Gyeongnam area and petrochemical industry in Jeonra area. In particular, the ripple effect of th Metropolitan logistic industry was far smaller than that of other areas, because the Seoul Metropolitan industry was identified as the primary and middle demand industry.

The Industrial Economic Costs of Unsupplied Electricity in OECD Countries using Input-Output Analysis (산업연관분석을 활용한 전력의 산업별 공급지장비용 평가 : OECD 국가를 중심으로)

  • Lee, Seung-Jae;Jeong, Dong-Won;Yu, Jae-Gab
    • Journal of the Korea Convergence Society
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    • v.7 no.4
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    • pp.191-198
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    • 2016
  • As the electricity produced from the electricity industry, a national key industry in Korea, are supplied to other industries as an intermediate goods, the supply shortage of electricity industry has a large impact on the national economy. This paper attempts to analyze the supply shortage effects which are defined as the negative impact of one won of supply failure in the electricity on the production of other industries. To this end, an input-output analysis using an input-output (I-O) table describing inter-industry flow of intermediate goods is applied. More concretely, the supply-driven model is applied subject to the OECD countries. The value of the supply effects interfere with Denmark's best large 1.682 was followed by South Korea, Japan, Australia, the UK.

An Analysis on the Economic Impacts of the Bio-gas Supply Sector (바이오가스 공급 확대의 경제적 파급효과 분석)

  • Baek, Min-Ji;Kim, Ho-Young;Yoo, Seung-Hoon
    • Journal of Energy Engineering
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    • v.23 no.2
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    • pp.74-82
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    • 2014
  • The government is planning to expand the bio-gas supply as a method for mitigating greenhouse gas emissions to deal with climate change. By means of a policy instrument, the government is considering an introduction of the Renewable Fuel Standard (RFS) whose targets include bio-gas. This paper attempts to look into the economic effects of expanding the bio-gas supply by applying an input-output (I-O) analysis using a 2011 I-O table. The bio-gas supply sector consists of liquefied petroleum gas supply sector and city gas supply sector, based on the tenets of introducing the RFS. The production-inducing effect, value-added creation effect, and employment-inducing effect of the bio-gas sector are analyzed. The supply shortage effect and the price pervasive effect are also investigated. The results show that the production or investment of 1.0 won in the bio-gas supply sector induces the production of 1.0539 won and the value-added of 0.1998 won in the national economy. Moreover, the production or investment of 1.0 billion won, supply shortage of 1.0 won, and a price increase of 10.0% in the bio-gas supply sector touch off the employment of 0.5279 person, 1.6229 won, and an increase in overall price level by 0.0183%, respectively.

The Role of the Value Added Network Service Industry in the Korean Economy: Using An Input-Output Analysis (부가통신서비스산업의 경제적 파급효과 분석: 산업연관분석을 이용하여)

  • Shin, Yong Jea;Choi, Sung Wook
    • Journal of Digital Convergence
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    • v.11 no.12
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    • pp.1-10
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    • 2013
  • The value added network service industry has played and important role in the telecommunication service industry and in the economic development of Korea. This study uses input-output analysis to investigate the role of value added network service sector in the Korean national economy for the period 2000, 2005, 2009, focusing on four topics in its application: production inducing effects, value-added inducing effect, employment-inducing effects by demand-driven model and supply shortage effect by supply-driven model, inflation impacts by the Leontief price model, finally analysing inter-industry linkage effects. The results of this study are as follows: production inducing effects analysis 2000 0.5253won to 2009 1.31314won, value-added inducing effects 0.25112won to 0.5337won employment inducing effects from 0.09749 to 0.21025 people grew, the supply shortage effect from 1.29003 to 2.12048won, price impact of Leontief price model was increased from 0.0022% to 0.00258%. Finally, inter-industry linkage effects, appeared to have the characteristics of final demand raw industrial.

Economic Effects of Sewage and Wastewater Treatment Service Sector: An Inter-industry Analysis (산업연관분석을 활용한 하수처리 부문의 경제적 파급효과 분석)

  • Park, So-Yeon;Lim, Seul-Ye;Yoo, Seung-Hoon
    • Journal of Korean Society of Water and Wastewater
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    • v.29 no.2
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    • pp.171-182
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    • 2015
  • The economic effects of sewage and wastewater treatment service (SWTS) sector on other sectors have been rarely investigated in the literature. This paper attempts to apply an inter-industry analysis to looking into the economic effects of the SWTS sector. To this end, the most recently published 2012 input-output table is used here. In particular, the SWTS sector is specified as exogeneous to identify the economic effects of the SWTS sector on other sectors. Production-inducing effect, value-added creation effect, and employment-inducing effect are quantified based on demand-driven model. Supply shortage effect and price pervasive effect are also analyzed employing supply-driven model and Leontief price model, respectively. The results show that production-inducing effect and value-added creation effect of a unit of investment or production in SWTS sector are estimated to be 1.7076 and 0.7392, respectively. The employment-inducing effect of one billion of investment or production in the SWTS sector is computed to be 11.0498 persons. The shortage effect of the SWTS sector amounts to 0.8417 won. The overall price effect of the 10% increase in the price of SWTS sector is calculated to be 0.0115%. This quantitative information can be utilized in predicting the economic effects of the SWTS sector-related activities or policy-making.