• Proceedings of the Korean Society of Computer Information Conference
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• 2017.07a
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• pp.176-177
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• 2017

고령화 시대에 있어서 노인복지시설을 이용하는 많은 노인들이 본인의 의지와 관계없이 일반적으로 경험하게 되는 건강관리 관련 프로그램은 대체의학과 밀접한 관계를 가지고 있다. 따라서 대체의학을 노인관련 의료복지에 적용함으로써 노인성질환에 대한 예방과 치료에 활용하고 치료를 통하여 노인의료복지의 수준을 제고하는데 노력을 할 필요성이 있다. 본 논문은 노인들의 일상생활에서의 대체의학의 요법을 통해서 포괄적인 건강증진을 위한 실천적 방안을 제시하고자 하였다.

• Clean Technology
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• v.17 no.2
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• pp.181-188
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• 2011

In this study, the complementary or crowding-out effects of public R&D subsidy on private R&D investment in the cleaner production were analysed between the effects and the major determinants (company size, R&D investment intensity, ratio of government investment, R&D manpower intensity). Among 207 firms' projects, the number of the complementary effect was 95 (45.9%) while that of crowding-out effect was 38 (18.4%). Resulting from logistic regression, the higher the R&D investment of sponsored companies is, the more complementary effect they show, responding to public R&D subsidy, and increase own R&D investment. The other determinants, however, showed no significant effects on firms' R&D investment. To heighten the effect of public cleaner production R&D, it is need to increase the priority of R&D investment intensity among the determinants. And to increase the performance of governmental R&D investment, further studies for the individual public R&D programs are necessary.

• The Korean Publising Journal, Monthly
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• s.245
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• pp.12-12
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• 1998

통일시대를 앞두고 우선 남북한 경제원리의 가장 큰 차이인 '계획'과 '시장'의 관계를 생각해 볼 수 있다. 또한 남한의 대외지향적 수출주도 전략과 북한의 내부 동원적 수입대체 전략의 평가도 고려해야 한다. 통일시대가 되면서 남북한은 세계시장에서 더욱 협조적인 관계를 정립하는 것잉 과제로 제기되고 있다.

• 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 Korea Technology Innovation Society
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• v.9 no.2
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• pp.236-259
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• 2006

This paper empirically examines the relationship between a firm's external technology acquisition and in-house R&D in Korean manufacturing sectors. Using the technology innovation survey conducted by the Korean government in 2002, and developing a semi-structural empirical model, we find that the firm's in-house R&D and technology acquisition have a complementary relationship: A firm's technology acquisition increases in its in-house R&D. Moreover, government R&D funding and tax incentives have positive effects on the in-house R&D, while the existence of the failed projects encourage a firm to acquire more external technologies.

• Journal of Labour Economics
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• v.36 no.1
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• pp.1-44
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• 2013

This paper surveys the existing literatures on labor demand of Korea. It has been found that labor and capital are substitutes in Korea and the result holds even if labor is decomposed into white collar and blue collar workers. The elasticity of substitution lies between 0 and 1. It is yet unclear if employment and work hours are substitutes. The reduction of legal work week did not increase employment although decreased work hours. The labor demand elasticity is below 0.5 in the short run. Since mid 1990s, the technological change has shown skill bias and therefore increased demand for skilled labor.

• Journal of Korea Technology Innovation Society
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• v.19 no.3
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• pp.634-657
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• 2016

This study analyzes relationship between utilizing patents and trade secrets of firms empirically by using Koran Innovation Survey data. A number of prior theoretical studies have been discussed by assuming the patents and trade secrets used as alternative mutual relations. However, the use of patents and trade secrets can be used as a complementary and alternative methods generally based on a variety of firm and innovation characteristics. In this study, after controlling for nature of businesses, industry and innovation, the relationships between patent and trade secrets were analyzed by using 2005, 2008, 2010, 2012 and 2014 cross-sectional data. Prior to 2010, the relationship of patents and trade secrets was used as a complementary, while the result of 2014 showed that patents and trade secrets were utilized by firms independently. However, because we couldn't completely rule out the possibility that this result is caused by the difference between surveys, we performed a additional analysis. In conclusion, the independent relationship between patents and trade secrets may be caused by the increased number of patent applications and preference for the patent by firms since 2010.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.28 no.5D
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• pp.713-721
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• 2008

The aim of this study is to analyze the spatial association of regional economic growth and land use considering 5 plus 2 regional economic sphere (Capital region zone, Chungchung zone, Honam zone, Daekyung zone, Dongnam zone and kangwon zone, Jejudo zone) in Korea. The factors of regional economic growth are GRDP and the rate of self-finance and land use, especially industrial and manufactering zone. The data for this research are obtained by National Statistical Office web-site etc. For this, the Seemingly Unrelated Regression(SUR), as a kind of simultaneous equation model, is employed as empirical analysis. Overall results of this study show that the spatial association of the capital region zone and other zones is complementary. but Honam zone and Dongnam zone or Daekyung zone is competitive. We conclude from this study that the policy of regional development will be considered in accordance with the regional economic growth and land use. Also, this study found that Economic growth of regional economic sphere will be achieved from that of cities within zone and the results will be helpful to policy makers and regional planners when establishing regional planning in the future.

• KSCE Journal of Civil and Environmental Engineering Research
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• v.37 no.3
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• pp.549-559
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• 2017

The complementary relationship hypothesis for areal evapotranspirations was validated in the regional-scale area of multipurpose dam basins in Korea and the long-term water balances were indirectly identified. Annual actual evapotranspiration ($ET_A$) was assumed the difference between total annual precipitation and total annual inflow and the available moisture was assumed the total precipitation. The seasonally varying pan coefficient (kp) is estimated as the ratio of the $ET_{pan}$ and the evapotranspiration calculated by FAO Penman-Monteith equation ($ET_{PM}$). The complementary relationships using ground observation data of $ET_P$ and $ET_A$ in the multipurpose dam basins follow generally the typical pattern that $ET_P$ and $ET_A$ is complementary and converges to equivalent evapotranspiration ($ET_W$) under the extreme wet environment. However, $ET_A$ of Juam dam was estimated relatively greater than other basins and exceeds even $ET_P$ at certain range with high moisture availability, which can be understood as the results of possible over-estimation of precipitation or under-estimation of dam inflow. It is expected that the use of evapotranspiration complementary relationship for validating hydrological water balances will contribute to controlling uncertainties in estimating dam inflows during flood season in particular.

• Proceedings of the Korean Operations and Management Science Society Conference
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• 2004.10a
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• pp.281-284
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• 2004

수년 내 서비스가 개시될 휴대인터넷 서비스는 현재 모든 통신사업자에게 큰 이슈로 떠오르고 있다. 관련산업 포함 연 16조원에 달하는 서비스로서 고속의 이동 무선인터넷 서비스를 제공한다. 그러나 아직 휴대인터넷의 시장에서의 위상이나 기존 서비스와의 대체 보완 관계가 정확히 연구되고 있지 않다. 본 논문에서는 휴대인터넷 서비스의 포지셔닝과 함께 휴대인터넷과 기존의 이동통신, 초고속인터넷, 및 DMB서비스와의 관계를 동시에 살펴본다.