• 문화기술의 융합
• /
• 제4권3호
• /
• pp.93-98
• /
• 2018

본 연구는 아시아의 대표적인 신흥경제국으로 원유수입국이며 소규모 개방경제인 한국을 대상으로 유가쇼크의 거시경제 효과를 충격반응함수를 추정하여 분석하였다는데 의의가 있다. 유가쇼크는 대부분 공급 측면의 요인에 의해 발생하는 것으로 알려져 왔으나, 본 연구는 유가쇼크를 수요와 공급 측면에서 세 가지로 구분하여 그 거시경제 효과를 분석하였다. 한국의 경우에 있어, 유가쇼크는 쇼크의 요인에 따라 상이한 반응을 보였다. 원유공급쇼크는 산업 활동과 금리를 하락시키며, 원유 자체 수요쇼크는 다른 요인에 의한 유가쇼크보다 상대적으로 금리를 가장 크게 상승시키는 것으로 나타났다. 그리고 경제호황에 의한 원유수요쇼크는 다른 요인에 의한 유가쇼크보다 물가와 환율을 상대적으로 가장 크게 상승시키는 것으로 나타났다. 따라서 정책당국은 유가쇼크의 요인에 따라 상이한 정책 대응을 할 필요가 있을 것이다.

• Management Science and Financial Engineering
• /
• 제14권2호
• /
• pp.105-118
• /
• 2008

There are many debates on the topic of the relationship between oil prices and economic growth. Through the repeated processes of conformations and contractions on the subject, two main issues are developed; one is how to define and drive oil shocks from oil prices, and the other is how to specify an econometric model to reflect the asymmetric relations between oil prices and output growth. The study, thus, introduces the unobserved component model to pick up the oil shocks and a first-order Markov switching model to reflect the asymmetric features. We finally employ unique oil shock variables from the stochastic trend components of oil prices and adapt four lags of the mean growth Markov Switching model. The results indicate that oil shocks exert more impact to recessionary state than expansionary state and the supply-side oil shocks are more persistent and significant than the demand-side shocks.

• 대한산업공학회지
• /
• 제24권4호
• /
• pp.475-483
• /
• 1998

Structural changes in an economy system bring about serious problems in establishing economic policies. The boom of middle-east export, the oil shock, and the recent dollar crisis in Korean economy are such examples. Hence, it is necessary to identify and estimate those structural changes. This study focuses on an output and price and analyzes structural changes in aggregate demand and supply. The aggregate demand and supply structures are described by conventional dynamic simultaneous equations model, where each structural change is represented by dummy variables and estimated by the proposed Bayesian method. By applying this model to Korean output and price, structural changes in the aggregate demand and supply are analyzed.

• 무역학회지
• /
• 제47권3호
• /
• pp.141-156
• /
• 2022

This study intends to examine the regional blocs of the international crude oil futures market by analyzing the dynamic conditional correlation between the international crude oil futures markets using the DCC-GARCH model. For statistical data, from April 2, 2018 to March 31, 2022, international crude oil futures prices such as Europe, the United States, China, and Dubai were used. To summarize the results of the study, first, the phenomenon of regional blocs in the international crude oil futures market is occurring, and it is found that it is gradually strengthening as time goes by. Second, it was found that the dynamic correlation of the international crude oil futures market is temporarily strengthened when a supply-demand imbalance problem occurs due to a global shock. Third, it was found that the volatility of the Chinese crude oil futures market affects the international crude oil futures market. This study confirmed that the regional blocs phenomenon in the international crude oil futures market is strengthened as time goes by. In particular, it suggested that China's influence in the international oil market would increase.

• 대한전기학회:학술대회논문집
• /
• 대한전기학회 2007년도 심포지엄 논문집 정보 및 제어부문
• /
• pp.346-348
• /
• 2007

Underground pipe is an instrument to transport rapidly and safely a lot of fluid like gas, oil, water supply and drain system. It acts like blood vessels of human body in a modern industry. As in this country, the pipe facilities have been constructing since 1970's. The pipes constructed for a long time ago are already starting to reveal the problem like corrosion and most of them are built underground. So for companies, the managing of the underground pipes is very hard because it needs high technology and a lot of money. So we made a new robot system to repair and maintain the pipes at a low price. This new robot is devised using pressing wall type to work inside 700${\sim}$900(mm) size pipe. And it has good carrying and working power.

• 한국우주과학회:학술대회논문집(한국우주과학회보)
• /
• 한국우주과학회 2004년도 한국우주과학회보 제13권2호
• /
• pp.262-265
• /
• 2004

As a cryogen, LOx is a light blue, odorless, transparent liquid. Also it is not shock sensitive and does not decompose. However, it is a strong oxidizer and will vigorously support combustion. Therefore all harmful contaminants (such as grease, oil, fingerprint and organic materials) that could cause malfunctions, fires, or explosions in a oxygen environments must be completely removed prior to the introduction of oxygen. Especially, grease ingredient located inside of the LOx supply line, pipe and PHS (Pneumo-Hydraulic System) part can make drastic chemical reaction with oxygen. Therefore, to protect rapid reaction such as explosion, grease ingredient must be surely eliminated by a regular and irregular degreasing. Study on the availability, effectiveness and selection of degreasing detergents and method is described in this paper, and it will be useful for the construction and management of IPP test facility.

• 기술사
• /
• 제33권3호
• /
• pp.12-14
• /
• 2000

Korean government adopted nuclear energy as a key energy source to reconstruct the shattered Korean economy caused by the oil shock in the 1970s, by securing cheap and stable electricity supply. During the 1980s, nuclear energy Played a crucial role as a foundation stone in the rapid growth of Korean economy. In addition, since 1997 nuclear energy has discharged its duty as a leading energy source to overcome the IMF foreign currency crisis. Finally, in 1999 the Korean nuclear power plants achieved the highest performance results compared with others in the world. In this article, I am going to look through the current status of Korean nuclear power generantion with an index of its development and I would like to suggest necessary tasks to Korean nuclear power industries to become more competitive in the future.

• KDI Journal of Economic Policy
• /
• 제14권1호
• /
• pp.37-60
• /
• 1992

본고(本稿)에서는 실질(實質)GNP, 총통화(總通貨), GNP디플레이터, 전산업명목임금(全産業名目賃金)으로 구성된 체계에서의 구조적(構造的) 벡터자기회귀모형(自己回歸模型)을 추정하였다. 구조적(構造的) 요인(要因)으로는 총수요(總需要)(DEMAND), 총통화(總通貨)(SUPPLY), 안정화정책(安定化政策)(STBLZTN), 그리고 임금충격(賃金衝擊)(WAGE)을 추정, 복원하였다. 모형내(模型內)의 모든 변수(變數)는 단위근(單位根)을 하나씩 보유하고 있고, 4변수간에 공적분(共積分)이 존재함도 확인되었다. 구조요인(構造要因)을 복원한 뒤에는 이를 이용하여 충격반응분석(衝擊反應分析)을 행해 각 요인의 동태적인 효과를 살펴보았다. 추정결과는 대체적으로 표준적인 케인즈모형(模型)과 부합하였으나 때때로 한국경제(韓國經濟)에만 독특한 현상도 발견되었다.