• Journal of the Korean Society of Safety
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• v.20 no.3 s.71
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• pp.164-173
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• 2005

In this paper, the systematic problems of safety management in domestic construction industry are presented by the investigation and analysis of construction fatal injuries. In particular, it is discussed that the current construction safety management system by contractors leading is ineffective to prevent the serious accidents caused by inappropriate planning and design and to circulate the safety management cycle without interruption. A couple of ways for improving domestic construction safety management system are suggested in broad perspective. This is done by the analysis of construction safety management system of four advanced industrial countries such as the United States, the United Kingdom, Germany, and Japan and the study of a best practice. Total safety management system by owners leading is recommended to prevent construction accident effectively because this system makes all the parties join to the management system and distribute the responsibilities clearly to each party. This will drop the accident occurrence rate by dragging all the parties' cooperations and activating the total safety management system in an early stage.

• Proceedings of the Korean Society of Applied Pharmacology
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• 1997.04a
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• pp.12-12
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• 1997

CFC-222 is a novel fluoroqinolone antibacterial agent synthesized and under development by the Cheil Jedang Corporation, Korea. CFC-222 exerts the antibacterial activity by inhibition of bacterial DNA gyrase leading to bactericidal action. In in vitro and in vivo preclinical testing, CFC-222 has been shown to possess a broad spectrum of antibacterial activity. In particular CFC-222 is very potent against Gram-positive bacteria such as Staphylococcus spp., Streptocuccus spp. (in particular penicillin G-resistant and -susceptible S. pneumoniae) and Enterococcus spp. when compared to other quinolones (ciprofloxacin, ofloxacin or lomefloxacin). CFC-222 also showed potent activity against the methicillin resistant clinical isolates of S. aureus (MRSA). Against Gram-negative bacteria (E. coli, Pseudomonas and Sarcina) the activity of CFC-222 was slightly weaker than that of ciprofloxacin, but was more potent than that of ofloxacin or lomefloxacin. In urinary systemic infections caused by both Gram-positive and -negative bacteria, CFC-222 demonstrated a potent therapeutic efficacy in particular against Cram-positive bacteria S. aureus, S. pyrogen 203 and S. pneumonia TypeIII.

• International Journal of Fluid Machinery and Systems
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• v.1 no.1
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• pp.47-56
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• 2008

The flow behind the variable area nozzle which corresponds to the flow at the leading edge of the impeller was measured with a 3-hole yaw probe and calculated with CFD. Two nozzle throat-areas were investigated. One is the smallest and the other is the largest opening for the variable nozzle. Test results agreed with the calculated results qualitatively. The leakage flow through the tip clearance of the nozzle vane significantly affected the flow field downstream of the nozzle vane with the smallest opening. However, the effect on leakage flow on the flow field downstream of the nozzle vane with the largest opening was very weak and the effect of wake is dominant.

• Transactions of the Korean hydrogen and new energy society
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• v.31 no.4
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• pp.380-386
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• 2020

This paper represents an analysis of the economic impact of firing natural gas/diesel and natural gas/by-product oil mixtures in diesel engine power plants. The objects of analysis is a power plant with electricity generation capacity (300 kW). Using performance data of original diesel engines, the fuel consumption characteristics of the duel fuel engines were simulated. Then, economic assessment was carried out using the performance data and the net present value method. A special focus was given to the evaluation of fuel cost saving when firing natural gas/diesel and natural gas/by-product oil mixtures instead of the pure diesel firing case. Analyses were performed by assuming fuel price changes in the market as well as by using current prices. The analysis results showed that co-firing of natural gas/diesel and natural gas/by-product oil would provide considerable fuel cost saving, leading to meaningful economic benefits.

• Proceedings of the Korean Geotechical Society Conference
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• 2010.09a
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• pp.269-281
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• 2010

The cone penetration test(CPT) has been increasingly used for in situ site characterization. However, the use of CPT is often limited due to specific site conditions depending on the cone size, geometry, and capacity of the CPT system used. In South Korea, it has generally been considered that the CPT could be satisfactorily performed only in soft soils. Louisiana State University/ Louisiana Transportation Research Center has implemented a field-rugged continuous intrusion miniature cone penetration test (CIMCPT) system since the 1990s. The miniature cone penetrometer of the CIMCPT system has a cross-sectional cone area of $2cm^2$ allowing finer soil profiles compared to the standard $10cm^2$. The reduced cross-sectional area also enables a system capacity reduction leading to cost saving and ease in maintenance. In addition, the continuous intrusion mechanism allows fast and economic site investigations. Samsung C&T Corporation has recently implemented a similar CIMCPT system. In this study, case studies on the field application of Samsung CIMCPT system for the last 2 years are presented to illustrate its performance investigation and its usefulness and limitation. Results of the case studies show that the CIMCPT system can be applied to soils with cone tip resistance($q_c$) values up to about 30MPa and allows a reliable and useful way to characterize soft soils. The results also show that the rod buckling limits the investigation depth by the system and the large contact pressure of the CIMCPT truck prevents the use of the system at sites with soft surface soils. According to the results of the case studies, the Samsung CIMCPT system has been being upgraded with a miniature cone with a longer rod, a crawler-type transportation system, a pre-boring system, and so on.

• Journal of the Korean Society of Manufacturing Process Engineers
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• v.19 no.11
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• pp.1-7
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• 2020

Recently, hydrogen has gained considerable attention as an eco-friendly fuel, which helps in reducing carbon dioxide content. Specifically, there is a growing interest in vehicles powered by a hydrogen fuel cell, which is spotlighted as an environmental-friendly alternative. A hydrogen transport system, fuel cell system, fuel supply system, power management system, and hydrogen storage system are key parts of a hydrogen fuel cell truck. In this study, a hydrogen storage system is built and analyzed. The expansion length of the storage vessel at maximum operating pressure (87.5 MPa) was calculated with ABAQUS, and then the optimized system was designed and built. The leak and bubble tests were performed on the built storage system. The leakage of the system was measured to be under 5 cc/hr. Hence, it can be used as a research test for the safety evaluation of leading systems of hydrogen fuel-powered commercial vehicles.

• Journal of the Korean Institute of Gas
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• v.25 no.6
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• pp.85-91
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• 2021

In January 2019, the Korean government announced the 「Hydrogen Economy Activation Roadmap」 to be a world-class leading country in Hydrogen economy. Korea has established a strategy that can lead the hydrogen economy with its strong points of 'hydrogen car' and 'fuel cell'. As a part of that, a target of supplying hydrogen vehicle charging stations to 310 by 2022 and 1,200 by 2040 was established. In line with this, Korea Gas Safety Corporation will operate a pre-consulting system of hydrogen vehicle charging station in February 2021 to solve in advance construction delays due to various on-site problems according to safety standards during the construction stage to build a hydrogen refueling station with a sense of speed. This paper is to find out about the pre-consulting system and to analyze its effects.

• The monthly packaging world
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• s.244
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• pp.111-117
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• 2013

(주)시눅프리미디어는 캐나다에 있는 Flexible Packaging Leading Company로서 북미 대표 한인기업인 Flair(대표 서영철, Flexible Packaging Corporation)가 한국 내 인쇄 품질관리를 위하여 2010년에 설립한 회사이다. (주)시눅프리미디어는 한국 그라비어 인쇄업계의 품질관리 수준 향상과 세계추세를 선도하는 품질관리를 목표로 2011년 부터 CMS(Color Managemant System에 의한 정량적 색상관리를 실무에 적용하여 시행 중이다. 국내 그라비어 인쇄 업계도 국제적으로 경쟁력 있는 제품을 만들기 위해서는 정량적 품질관리가 반드시 요구될 수 밖에 없다. 따라서 2년여 기간 동안 (주)시눅프리미디어의 협력사(플레이트 제조사, 인쇄사)가 실무 중에 경험한 사례를 소개함으로써 국내 그라비어 인쇄업계에 도움이 되기를 희망한다.

• The monthly packaging world
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• s.240
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• pp.88-95
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• 2013

(주)시녹프리미디어는 캐나다에 있는 Flexible Packaging Leading Company로서 북미 대표 한인기업인 Flair(대표 서영철, Flexible Packaging Corporation)가 한국 내 인쇄 품질관리를 위하여 2010년에 설립한 회사이다. (주)시녹프리미디어는 한국 그라비어 인쇄업계의 품질 관리 수준 향상과 세계추세를 선도하는 품질관리를 목표로 2011년 부터 CMS(Color Managemant System에 의한 정량적 색상관리를 실무에 적용하여 시행 중이다. 국내 그라비어 인쇄 업계도 국제적으로 경쟁력 있는 제품을 만들기 위해서는 정량적 품질관리가 반드시 요구될 수 밖에 없다. 따라서 2년여 기간 동안 (주)시녹프리미디어의 협력사(플레이트 제조사, 인쇄사)가 실무 중에 경험한 사례를 소개함으로써 국내 그라비어 인쇄업계에 도움이 되기를 희망한다.

• Journal of Digital Convergence
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• v.16 no.10
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• pp.69-78
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• 2018

This The purpose of this study is to find policy implications through the analysis of the operational cases and establishment performance of the Leading University for startups. The method of the study was statistical analysis using the data generated during the operation of the Leading University for startups. The results of the study show that there is a difference between short-term performance by gender and age. Second, there was no correlation of the short-term performance with the evaluation, but a negative correlation was observed with the detailed document evaluation part. Third, there is no difference in short-term performance depending on the mentor. Strategic utilization is to reduce the reflection of the founder's short-term performance in the appraisal of the Leading Universities. And there is a need to improve the evaluation method for the applicant. The limitations of this study are that it is inadequate to be an empirical study through statistical analysis. And statistical analysis shows that there are not enough cases. Therefore, I will make an empirical study which will expand the number of cases by including cases of several universities in the future.