• 한국산학기술학회논문지
• /
• 제13권10호
• /
• pp.4506-4513
• /
• 2012

본 연구의 목적은 중국의 전력소비와 경제성장의 인과관계를 분석하고 그 방향을 확인하여 정책적 시사점을 도출하는 것이다. 이러한 목적을 달성하기위해 1971년~2008년 동안의 연간자료를 사용하여 단위근 검정, 공적분 검정, 오차수정모형을 통한 Granger-인과검정을 하였다. 검정결과 중국의 전력소비와 경제 성장사이에는 장, 단기적 양방향 인과성이 발견되었다. 이러한 결과는 중국의 정책분석가에게 몇 가지 유용한 시사점을 제공한다. 첫째: "경제가 발전하려면 전력이 선행해야 한다."라는 중국의 발전전략이 지금도 유효하다. 즉 전력소비의 증가는 경제성장을 촉진한다. 물론 경제성장에 미치는 다른 요인들이 존재하고 전력은 그 일부분이지만 경제성장을 하기위해서는 안정적인 전력공급이 필요하다. 둘째: 본 연구는 실질 GDP의 증가가 전력소비를 늘린다는 주장도 성립함을 확인하였다. 이는 직관적으로 소득이 늘어나면 보다 많은 전력을 필요로 하는 제품사용이나 수요가 증가할 것이다.

• 산업경영시스템학회지
• /
• 제44권4호
• /
• pp.98-105
• /
• 2021

Using the frequency-based decomposition, I decompose the consumption growth to explain well-known patterns of stock returns in the Korean market. To be more specific, the consumption growth is decomposed by its half-life of shocks. The component over four years of half-life is called the business-cycle consumption component, and the components with half-lives under four years are short-run components. I compute the long-run and short-run components of stock excess returns as well and use component-by-component sensitivities to price stock portfolios. As a result, the business-cycle consumption risk with half-life of over four years is useful in explaining the cross-section of size-book-to-market portfolios and size-momentum portfolios in the Korean stock market. The short-run components have their own pricing abilities with mixed direction, so that the restricted one short-term factor model is rejected. The explanatory power with short- and long-run components is comparable to that of the Fama-French three-factor model. The components with one- to four-year half-lives are also helpful in explaining the returns. The results about the long-run components emphasize the importance of long-run component in consumption growth to explain the asset returns.

• Fisheries and Aquatic Sciences
• /
• 제24권9호
• /
• pp.311-317
• /
• 2021

Inclusion effect of various levels of jack mackerel meal (JMM) acting as feed attractants and/or stimulants in diets on the growth, feed consumption, feed utilization and whole body composition of rockfish was investigated. Three hundred juvenile rockfish were randomly allocated into 15 flow-through tanks. Five experimental diets supplemented with JMM at 0%, 1%, 3%, 5%, and 10% at the expense of anchovy meal were prepared and referred to as the JMM0, JMM1, JMM3, JMM5, and JMM10 diets, respectively. Weight gain, specific growth rate (SGR) and feed consumption of fish tended to improve with dietary levels of JMM. The greatest weight gain, SGR and feed consumption were observed in fish fed the JMM10 diet, followed by the JMM5, JMM3, JMM1, and JMM0 diets, in that order. Condition factor (CF) of fish tended to improve with dietary inclusion levels of JMM. Growth performance, feed consumption and CF of fish tended to improve with dietary inclusion levels of JMM ranging from 0% to 10%.

• Journal of Ginseng Research
• /
• 제17권3호
• /
• pp.210-218
• /
• 1993

This study was conducted to investigate the effects of Korean ginseng extracts and their fractions on the growth of Saccharomyces cerevsiae and Saccharomyces uvamm, their glucose consumption and alcohol production. The growth of both yeasts were stimulated by ginseng extracts and their water soluble fractions, but were supressed by ether extracts and an n-butanol extracts. Their growth were enhanced considerably by low molecular weight fractions (< 1,000) in water solubles. Similar results were also obtained with glucose consumption by yeasts. Substances increasing the growth and glucose consumption by yeasts proved to be a low molecular weight fractions (<1,000) in water solubles not saponins. The production of n-propyl alcohol by yeast was enhanced by adding ginseng extracts into the media, but that of ism-butyl alcohol was suppressed at same condition.

• The Journal of Asian Finance, Economics and Business
• /
• 제9권5호
• /
• pp.295-303
• /
• 2022

This study investigates the impact of globalization, coal consumption, and economic growth on CO₂ emissions in Malaysia by applying the Kuznets Environmental Curve model. The study employed the Autoregressive Distributed Lag modeling technique on time series data over the period of 1970-2018 to determine the short and long-run relationship between CO₂ emissions and a number of variables, including globalization, coal consumption, and economic growth. The results show that globalization increase CO₂ emissions in both the short and long run in Malaysia. Furthermore, the results reveal that economic growth and coal consumption degrade the environmental quality by accelerating the CO₂ emissions in the short-run and long run. As a result, the findings validate the Kuznets Environmental Curve hypothesis of an inverted U-shaped relationship between economic growth and CO₂ emissions in the long run for Malaysia. The findings of this study suggest that higher globalization levels and usage of coal consumption degrade the environmental quality in Malaysia. The findings also indicate the effect of economic growth on environmental degradation is positive at the initial stage but improves after the economy achieves a threshold level of income per capita in the economic development process with an inverted U-shaped pattern in the long run.

• 한국대기환경학회지
• /
• 제28권4호
• /
• pp.466-476
• /
• 2012

This study calculated monthly and sectoral (for industry, energy industry, transport, residential, commercial and public sectors) greenhouse gas (GHG) emissions of Seoul, Korea from 1999 until 2009 with following the IPCC 2006 Guideline for National Greenhouse Gas Inventories through an analysis on available monthly data of fossil fuel and electricity consumption for the period. The time series analysis showed that GHG emissions had significant cyclical pattern season by season with the highest peak in August and the lowest peak in January throughout the period. The analysis on monthly and sectoral energy consumption showed that residential, commercial and public sectors had emitted about 65% of total GHG emissions of Seoul and had consumed more energy in winter for heating. About 30% GHG of Seoul was emitted from transport sector but its monthly energy consumption showed irregular pattern and it consumed 80% petroleum (in 2009) of Seoul. Hopefully together with further study on this subject, it is expected that this study can be used as basic data for various research regarding Greenhouse gas baseline emission, energy consumption pattern and estimation for future GHG emission of Seoul.

• 한국수자원학회논문집
• /
• 제37권10호
• /
• pp.869-880
• /
• 2004

본 연구의 목적은 한국에서의 물소비와 경제성장간의 관계를 분석하여 그 결과에 대한 정책적 함의를 도출하는 것이다. 이러한 목적을 달성하기 위해, 본 연구는 보다 엄밀한 Granger 인과성 기법을 적용하여 인과성 문제를 좀더 세심하게 살펴보았다. 단위근, 공적분 그리고 오차수정모형을 통한 Granger 인과성 검정의 적용 결과, 한국에서의 물소비와 경제성장 사이에 양방향의 인과성이 존재함이 발견되었다. 이러한 발견은 우리나라 전체를 위한 정책분석 혹은 정책예측에서 몇 가지 유용한 정책적 시사점을 제공한다. 경제성장에 영향을 미치는 많은 다른 요인들이 존재하고 물소비는 이 중의 일부이긴 하지만, 경제정장의 촉진을 위해서는 물소비에 지장을 초래하지 않도록 충분한 투자가 요구된다. 따라서 전국의 상수도 인프라를 확충하기 위한 상수도 관련 투자는 경제성장을 촉진할 것이다. 또한 본 연구는 실질소득 증가가 물소비의 증가를 가져온다는 주장도 성립함을 확인하였다. 경제성장의 결과, 더 높은 비율의 소득이 상수도 관련 인프라에 투자되고 더 나아가 국민들의 삶의 질 향상과 산업체에서의 생산활동 증가 등에 따라 물의 사용을 늘리게 한다.

• Biotechnology and Bioprocess Engineering:BBE
• /
• 제10권4호
• /
• pp.304-308
• /
• 2005

The response of IPTG induction was investigated through the monitoring of the alkali consumption rate and buffer capacity during the cultivation of recombinant E. coli BL21 (DE3) harboring the plasmid pRSET-LacZ under the control of lac promoter. The rate of alkali consumption increased along with cell growth, but declined suddenly after approximately 0.2 h of IPTG induction. The buffer capacity also declined after 0.9 h of IPTG induction. The profile of buffer capacity seems to correlate with the level of acetate production. The IPTG response was monitored only when introduced into the mid-exponential phase of bacterial cell growth. The minimum concentration of IPTG for induction, which was found out to be 0.1 mM, can also be monitored on-line and in-situ. Therefore, the on-line monitoring of alkali consumption rate and buffer capacity can be an indicator of the metabolic shift initiated by IPTG supplement, as well as for the physiological state of cell growth.

• Journal of Dairy Science and Biotechnology
• /
• 제28권1호
• /
• pp.9-16
• /
• 2010

Adolescents grow rapidly and have lots of schoolwork for entrance examination, so good nutrition is very important to them. However, adolescents tend to have a poor dietary behavior including frequent consumption of empty calorie foods and skipping breakfast. In particular, frequency of drinking milk has been low among Korean adolescents, thus their dietary calcium intakes has been low. Undesirable dietary behavior of adolescents is a risk factor for poor nutrition, obesity and chronic disease of them. Milk is a good source for calcium, high quality of protein, vitamin and bioactive compounds including anti-obesity component, thus it has been reported that milk helps improvement of dietary nutrient adequacy and physical growth, increment of bone mineral density, and prevention of obesity and chronic diseases. Therefore, milk consumption of adolescents should be encouraged in order to help their nutritional status, physical growth and health.

• 조명전기설비학회논문지
• /
• 제30권3호
• /
• pp.39-45
• /
• 2016

In these days global energy policy is changed from "supply" to "demand". In this regards, there are needs to analysis on effect of policy such as energy efficiency strategy, electricity rates. This study examines the relationship between energy consumption reduced by new energy policy and GDP growth for each industrial sector for Korea from 1970 to 2013. With respect to the direction of causality, energy use of 1th industry like agriculture and mining leads to GDP growth. On the other hand, GDP growth of 2nd industry, manufacturing, leads to energy use. And there is bidirectional causality in 3rd industry, service sector. These findings imply that the government policies aimed at reducing electricity consumptions and increasing energy efficiency should be progressed cautiously depend on status of each industry condition.