• Environmental and Resource Economics Review
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• v.23 no.1
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• pp.91-132
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• 2014

We investigate the effect of ICT capital on the demands for labor and energy in manufacturing and electricity gas water industries of Korea, US, and UK. Assuming ICT capital, non-ICT capital, labor, electricity, fuel, and material as input factors for manufacturing and ICT capital, non-ICT capital, labor and energy material as input factors for electricity gas water industry, we estimate the Morishima elasticities of substitution. Considering the relative price changes of input factors, ICT capital has substituted labor in manufacturing and electricity water gas industries of the three countries. ICT capital has substituted both electricity and fuel in US and UK manufacturing. Although ICT capital has substituted electricity and fuel each other in Korean manufacturing, ICT capital is unlikely to decrease the demands for electricity and fuel when considering their relative price changes. ICT capital has substituted energy material in electricity gas water industries of the three countries.

• Environmental and Resource Economics Review
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• v.32 no.1
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• pp.27-46
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• 2023

This paper investigates how interfuel substitution affects carbon dioxide (CO₂) emissions with a focus on the use of biodiesel blended fuels. The results show that the Divisia elasticity of diesel demand is the greatest because the transportation sector relies heavily on diesel. Also, while the own-price elasticity of each fuel demand is negative, the results reveal that diesel demand is more inelastic than the demand for gasoline and LPG. Moreover, gasoline is a substitute for diesel and electricity, and diesel is a substitute for LPG and a complement for electricity. Regarding the effects on carbon dioxide emissions, this paper computes the potential CO₂ emissions associated with interfuel substitution using the coefficients of CO₂ emissions. The results show that using biodiesel blended fuels contributes to reducing CO₂ emissions, but it appears that the price-induced interfuel substitution is a main factor affecting CO₂ emissions.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.16 no.9
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• pp.5843-5849
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• 2015

This study analyzes the factor demand structure of sweet persimmon as a part of finding out cost cutting measures. Income and cost data from 2001~2013 Agricultural Income Survey are used for placing the translog cost function and estimating price elasticies and cross elasticities of labor, capital and intermediate input. The result shows that own price elasticities of all factors are small in absolute terms. Additionally the result indicates capital and intermediate input cannot be a substitution for labor, which is a top-line cost-share. It means that the demand for labor cconstitutionally can't be reduced in a short time. This implies that cost reduction should be done focusing on intermediate input, particularly on fertilizer and materials which have higher price elasticity of demand.

• Environmental and Resource Economics Review
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• v.13 no.4
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• pp.593-619
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• 2004

This study analyzes the interfuel substitution of energy demand in Korean manufacturing sector using static and dynamic linear logit models. For the period of 1981~2002, this study uses petroleum, electricity, natural gas and coal as energy sources. According to the empirical results, firstly, the own-price elasticity of coal has been increased steadily even though its elasticity is smallest compared with those of other energy sources. On the other hand, price elasticity of natural gas is largest, but its value has been decreased after 1997. Price elasticities of petroleum and electricity are very stable over the sample period. One of the main features in trends of interfuel substitution is as follows. Substitution effect of a change in price of natural gas on both petroleum and coal has been increased especially after 1997. The implication of the empirical results is summarized as follows: First, the fact of inelastic own-price elasticity of petroleum implies that the dependency of Korean manufacturing sector on petroleum and coal will be persistent even in a sharp fluctuation of petroleum price. Second, the effects of price increase in natural gas on demand for petroleum and coal are very significant. Thus, price decline of natural gas rather than price declines of coal and petroleum could be more effective as an energy price policy for the reduction of $CO_2$ emission. The assessment on this implication will remain for future researches.

• Environmental and Resource Economics Review
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• v.20 no.3
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• pp.419-457
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• 2011

This study aims at understanding the characteristics of global economic models, which are widely used for climate change policy analysis. A literature review study was conducted in order to derive general features of top-down models such as CGE and bottom-up/hybrid models such as GTEM. Furthermore, a structural analysis was carried out by applying parameter and structural components from other models to a particular model to observe the potential differences in outcomes. Literature review shows that bottom-up or hybrid models generally have higher level of reduction potentials than top-down models in the long run. This contradicts the conclusion presented by IPCC, and raises the need for more rigorous investigation through structural analysis. Structural analysis of EPPA model indicates that the structural component of the energy sector in a particular model is the most influential factor in predicting baseline emissions and reduction potentials. This includes the structure among energy, capital, and labor inputs, and the substitution elasticities within the energy bundle. Technology bundle can establish the conclusions from literature review, and change in Armington elasticities do not significantly affect the outcome in aggregate.

• Journal of Industrial Convergence
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• v.21 no.5
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• pp.31-41
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• 2023

We examine the relationship between abusive supervision and work-family conflict, and the moderating effects of employee's resilience and perceived organizational support. We collected the employees' sample(n=136) and conducted multiple hierarchical regression analysis. Abusive supervision has a significant positive effect on work-family conflict. Subordinate's resilience has a buffer effect on the main relationship, but perceived organizational support has no significant moderating effect. This study will be helpful for employees who are suffered from work-family conflict.

• KDI Journal of Economic Policy
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• v.15 no.3
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• pp.161-190
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• 1993

우리나라의 산재보험제도(産災保險制度)는 최초의 사회보장제도(社會保障制度)로서 1964년부터 실시되어 동로자(動勞者)들의 생활보호(生活保護)에 중요한 역할을 하여 왔다. 그러다 양적(量的)인 확대(擴大)에도 불구하고 현재와 우리나라 산재보험제도는 많은 문제점을 가지고 있는데, 예를 들어 동로자(動勞者)들은 급여수준(給與水準)에 대하여 큰 불만을 가지고 있는 반면 사용자(使用者)들은 보험제도를 통한 근로자들의 노동기피현상(勞動忌避現象)(shirking)을 정부측(政府測)에서 적절히 통제하지 못하고 있다고 주장한다. 본(本) 논문(論文)은 이러한 맥락에서 임금(賃金)과 산재휴업일수(産災休業日數)간의 관계를 고찰하고자 한다. 임금수준(賃金水準)은 휴업일수(休業日數)에 대하여 두가지 경로(經路)를 통하여 영향을 미친다. 첫째로, 임금(賃金)이 높을수록 휴업을 빨리 끝내고 재취업(再就業)하려는 유인(誘引)이 강해지는 반면, 둘째로 임금(賃金)이 높을수록 이의 일정비율(一定比率)로 정해지는 휴업급여(休業給與)도 높아져서 재취업(再就業)의 유인(誘引)이 감소한다. 본(本) 논문(論文)은 재해동로자(災害動勞者)들에 대한 횡단면(橫斷面) 분석(分析)을 통하여 이러한 두 영향의 상대적(相對的) 크기를 살펴보고, 이것이 임금계층(賃金階層)에 따라 어떻게 달라지는지를 실증분석(實證分析)하였다. 이를 위해서 여러가지 유형(類型)의 듀레이션(duration)유형(類型)을 추정하였는데, 분석 결과 임금(賃金)에 대한 휴업일수(休業日數)의 탄력성(彈力性)은 평균적으로 양(+)이며 또한 이 탄력성(彈力性)은 임금수준(賃金水準)이 높을수룩 높아지는 것을 발견하였다. 이러한 발견은 현재 모든 임금계층(賃金階層)에게 재해전(災害前) 평균임금(平均賃金)의 70%로 정해져 있는 휴업급여(休業給與) 산정방식(算定方式)을 조정하여 고임금동노자(高賃金動勞者)에게는 임금대체율(賃金代替率)을 하향조정(下向調整)할 필요가 있음을 의미한다.

• Environmental and Resource Economics Review
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• v.22 no.1
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• pp.77-98
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• 2013

China, the world's largest $CO_2$ producer, is likely to be obligated to reduce greenhouse gas emissions under the post-Kyoto protocol. This paper estimates a Shephard input distance function for the Chinese fossil-fueled power generation sector to measure the shadow price of $CO_2$ emissions, technical efficiency, and indirect Morishima elasticities of substitution between inputs. Empirical results show that, on average, it costs approximately 3.2 US dollars per year to reduce $CO_2$ emissions by one ton over the period 1981-2009. This finding indicates that Chinese power sector is expected to benefit from selling emission permits to other countries such as Korea and Japan, given that our estimate for China is lower than the ones previous literatures estimated for the power sector in these countries. The maximum attainable average $CO_2$ reduction potential amounts to approximately 25 million tons per year by improving technical efficiency. Capital is substitutable with both coal and oil and capital is relatively more readily substituted for these fuels.

• Journal of the Korean Society of Food Science and Nutrition
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• v.37 no.7
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• pp.914-920
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• 2008

In this study, hard roll breads were prepared with 3, 6, 9, 12, and 15% of concentrated sweet pumpkin powder (CSPP). The samples and a control were then compared in terms of quality characteristics, including pH, total titratable acidity, fermentation power of dough expansion, specific volume, baking loss, moisture content, color, textural characteristics, external and internal surface appearances, and sensory qualities of bread in order to determine the optimal ratio of CSPP in the formulation. As CSPP content increased, pH of dough, specific volume, baking loss, and lightness of bread decreased, while total titratable acidity of dough, pH, total titratable acidity, moisture content, and redness of bread increased. Fermentation power of dough expansion increased as incubation time increased. The CSPP samples had significantly higher yellowness, hardness, cohesiveness, gumminess, chewiness, and resilience than the control group. Adhesiveness was the highest at the 12% substitution level, while the lowest at the 6% level. Springiness increased with increasing CSPP content. In the sensory evaluation, as CSPP content increased, scores for color and consistency of crumb decreased, while scores for aroma of sweet pumpkin, sweetness, and delicious taste increased. Density of crumb pore were maximal with the 12% CSPP substitution. The CSPP samples had significantly higher uniformity of crumb pore and springiness of crumb than the control group. However, mouth-feel and overall acceptability showed the reverse effect, obtaining fairly good scores. In conclusion, the results indicate that substituting $6{\sim}9%$ CSPP to hard roll bread is optimal, providing good physiological properties as well as reasonably high overall acceptability.

• Journal of the Korean Society of Food Science and Nutrition
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• v.45 no.10
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• pp.1453-1459
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• 2016

Yacon syrup, which contains fructooligosaccharides (FOS), was used as a substitute for sugar to make functional healthy sponge cake. Regarding characteristics of sponge cake with various yacon syrup concentrations, height and volume decreased while moisture content increased with increasing yacon syrup concentration. Sponge cake with increasing yacon syrup content showed a greater green-yellowish color. Springiness, cohesiveness, hardness, and brittleness decreased with increasing yacon syrup concentration. Hardness values of cakes made with 100% sugar (YS 0) and yacon syrup substitute for 10% sugar (YS 10) were not significantly different. Overall acceptance of sponge cake decreased with increasing yacon syrup content, whereas those of YS 0 and YS 10 were not significantly different. For storage period, moisture content of sponge cake with increasing yacon syrup concentration decreased during storage, whereas the decreasing moisture content was less than that of YS 0. The color of sponge cake with various yacon syrup concentrations did not change significantly during storage. Springiness and cohesiveness decreased during storage. Hardness increased with storage period, whereas that of sponge cake made with yacon syrup was lower than that of YS 0. In conclusion, sponge cake made with YS 10 is the best to make sponge cake with high consumer acceptance, reduced sugar content, and FOS.