• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.16 no.6
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• pp.157-175
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• 2021

This study categorized 3,214 companies out of the tech firms supported by the Korea Technology Finance Corporation's "technology guarantee scheme" through technology assessment from 2017 to 2019 into Fourth Industrial Revolution-related companies and general SMEs. The impact of the management characteristics of these 1,752 tech firms on the determination of high-growth firms was then empirically analyzed. This study used the OECD(2007) definition to define a "high-growth firm" as "an enterprise with average revenue growth greater than 20% per annum, over a two-year period." As the two sample groups showed non-normal distribution, this study conducted the Mann-Whitney U test, a nonparametric test, to analyze the mean differences and bivariate logistic regression in which the normality assumption is less stringent. The independent variables include fundamental characteristics; a regional dummy; a technological level dummy; and the capabilities of company representatives, human capital, and technological innovation. The corresponding sub-variables are representatives' level of education and experience in the same industry, full-time workers, research personnel, the extent of intellectual property rights, investment in research and development, firm age, total assets, region_metropolitan area, region_central region, technological level_high technology, and technological level_medium technology. As a result, the research hypothesis about representatives' level of experience in the same industry, full-time workers, total assets, and technological level_high technology was supported for the Fourth Industrial Revolution-related companies. For the general SMEs, the research hypothesis about representatives' level of experience in the same industry, research personnel, total assets, and region_metropolitan area was supported.

• Journal of the Ergonomics Society of Korea
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• v.10 no.2
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• pp.43-50
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• 1991

This paper reports the results of four related studies concerning the combined effects of impermeable clothing and alternating levels of workload. The negative consequences of impaired evporation due to impermeable clothing are compared for different schedules, workloads, preheating, and high heat conditions.

• Proceedings of the Korean Institute of IIIuminating and Electrical Installation Engineers Conference
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• 2002.11a
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• pp.259-260
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• 2002

본 논문에서는 250 [W] 고압나트륨램프용 전자식 안정기를 제작하여 전기적 특성을 측정하였다. 개발한 전자식 안정기는 입력전압 220 [V]용으로, 안정된 전기적 특성을 갖는 것으로 입증되었다.

• Magazine of the Korea Institute for Structural Maintenance and Inspection
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• v.17 no.2
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• pp.65-76
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• 2013

• Proceedings of the Korean Nuclear Society Conference
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• 2002.05a
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• pp.444.1-444
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• 2002

• Journal of the Korean Professional Engineers Association
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• v.34 no.5
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• pp.18-24
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• 2001

This Seoul World Cup Stadium is designed not only for FIFA's Football Game. This stadium would be a very huge multi-use urvan structure as a core of new developing west seoul. Architect's basic design concept is based on the combination of traditional korean symbolic form and ultra mordern high-tech.

• Proceedings of the Materials Research Society of Korea Conference
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• 1998.08a
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• pp.58.4-58
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• 1998

• Asia-Pacific Journal of Business Venturing and Entrepreneurship
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• v.4 no.1
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• pp.1-27
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• 2009

The bio-technology industry is a technology-intensive high value added area where R&D and securing core technology are important. Many countries across the world are nationally supporting and nurturing this industry as a next generation growth engine. This study aims to introduce development plan for the bio-tech industry in Korea through analyzing factors for the development of bio-tech industry by using Analytic Hierarchy Process (AHP) and to set the priorities among such factors. The analysis shows that key element for the development of bio-tech industry is technological capacity in the present and in the year of 2015. It also shows that it is essential to have government support and investment in strengthening R&D and cooperative system of industry, academia and research institute for the development of basic original technology. In addition, it suggested 5 plans for the development of bio-tech industry in Korea including securing new technologies in bio-tech industry, improving efficiency of R&D management system, protecting and culturing traditional bio-tech industry, creating emerging markets and efficiently providing support to nurture bio-venture companies.

• Journal of the Korean Society of Food Science and Nutrition
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• v.36 no.6
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• pp.663-669
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• 2007

The solvent extracts of Sargassum muticum, which were extracted by using several solvents with different polarities, were prepared for use as natural preservatives. The S. muticum extract with 80% ethanol was sequentially fractionated with n.hexane, dichloromethane, ethylacetate, and butanol. In order to effectively screen for natural preservatives agents, we first investigated the antioxidant activities such as DPPH radical scavenging capacity, superoxide radical scavenging capacity, and xanthine oxidase inhibitory activity of the S. muticum extracts. Through the screening system, we found that dichloromethane and ethylacetate fraction had high antioxidant activity with increments of the extract concentration. The antimicrobial activities and cell growth inhibition were investigated for each strain with the different concentrations of S. muticum extracts. Antimicrobial activities were shown in ethanol, dichloromethane, and n.hexane fractions of S. muticum. However, butanol, ethylacetate and water fractions showed weak antimicrobial activity against the tested microorganisms. Among the five fractions, dichloromethane fraction showed the highest antimicrobial activities against microorganisms tested, such as Bacillus sublitis, Listeria monocytogenes, Staphylococcus aureus, Escherichia coli, Salmonella Enteritidis and Pseudomonas aeruginosa. The polyphenolic compounds from ethanol, n.hexane, dichloromethane, ethylacetate, butanol, and water fractions were 63.96 mg/g, 8.49 mg/g, 28.11 mg/g, 172.64 mg/g, 114.56 mg/g, and 34.91 mg/g, respectively. The dichloromethane fraction could be suitable for development as a food preservative.

• Journal of Animal Science and Technology
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• v.50 no.2
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• pp.265-272
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• 2008

The CCAAT/enhancer binding protein β(C/EBPβ), a member of the leucine zipper DNA-binding protein of transcription factor, plays a crucial role in the control of early phases of adipocyte differentiation. In this studies, we report the identification, characterization, and expression of the Korean native cattle C/EBPβ gene. The Korean native cattle and black cattle C/EBPβ cDNA includes a 1047bp open reading frame encoding a protein of 348 amino acids. The C/EBPβ cDNA sequence of the Korean native cattle and black cattle shows high conservation with the corresponding amino acid sequences reported in other species. The distribution of C/EBPβ mRNA in various tissues of Korean native cattle aged 26 months was investigated using Northern Blot analysis. The C/EBPβ expression was detected in adipose tissue, lung, sirloin while expression was not detected in heart, kidney, small intestine, colon, and liver. However, we are analyzed polymorphism of bZIP domain in the C/EBPβ gene. A polymorphism was not identified at this position.