• Proceedings of KOSOMES biannual meeting
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• 2017.04a
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• pp.251-251
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• 2017

• Proceedings of the Korean Information Science Society Conference
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• 2003.10b
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• pp.268-270
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• 2003

원자력 발전소 안전계통이나 의료 시스템과 같은 실시간 내장형 시스템의 설계는 그 안전성을 분석하기 위한 정형 명세가 요구된다. 이러한 실시간 내장형 시스템이 명세를 위해 본 논문에서는 Statecharts를 확장하여 시간적 명세 및 분석에 용이하고 하드웨어/소프트웨어 통합 설계에 유리한 언어를 제시한다. 그리고 그 언어의 의미론을 기술하고, SyncCharts라는 정형명세 언어로 그 행위의 의미론을 부여한다. 이렇게 하여 기존의 Statecharts를 실시간 내장형 시스템에 적합하도록 수정하고 그 의미론을 부여한다.

• Fire Science and Engineering
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• v.12 no.2
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• pp.29-42
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• 1998

The use of computer supported fire safety engineering calculations has grown significantly in recent years and will be increased rapidly. In this study, in order to examine for fire dynamics of the enclosed compartment with window glass(3mm, 4mm thickness) when the window glass breaks, we conducted numerical computer simulations about foam sofa fire with the zone type computer mode, FASTLite package(version 1.1.2) and the Berkeley algorithm for breaking window glass in a compartment fire, BREAK1 program (version 1.0). The analysis of the results in this paper shows that there are differences of fire dynamics between open-or enclosed-state compartment fire and the enclosed compartment fire with window glass breaking. It is also shown in this study that backdraft phenomenum occurs due to accumulated unburned combustible fuel when the glass of 4mm thickness breaks, and that temperature differences between the inner-and outer-surfaces of 3mm and 4mm thick glasses are appreciable. This study will help fire fighter to establish fire suppression or occupant's refuge strategies and fire safety engineer to enhance simulation techniques about the five dynamics of compartment fire.

• Journal of Embryo Transfer
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• v.21 no.1
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• pp.53-58
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• 2006

This study was conducted to comparing on vitrification of mouse oocytes and embryos using CPS, conventional straws and CPS by evaluating in morphological survival for oocytes, and embryonic cleavages and blastocyst formation for embryos. The morphological survival in vitro after thawing of vitrified oocytes using CPS (75%) and conventional straws (72%) were significantly higher (p<0.05) than that using OPS (68%). The blastocyst formation rates of vitrified embryos using CPS (48.6%) and unfrozen control embryos (56.0%) were significantly higher (p<0.05) than those of conventional straws (43.4%) and OPS (37.7%). The rates of morula formation were also higher to control, CPS, conventional straws and OPS in orderly. These results show that CPS has the advantages of achieving a high survival and safety preservation.

• The Journal of Engineering Research
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• v.2 no.1
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• pp.125-131
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• 1997

The regenerator is important part of the glass melting furnace to increase the temperature of the intake air through the combustion flame. The insulation, checker brick, prevention of the air leak has been studied to decrease the fuel consumption in glass melting industries. Thus the new types of checker brick and the design of the rider arch has been studied to prolong the life of the glass melting furnace. The height of the regenerator increased from 5.64 m to 7.89 m in the reforming of the glass melting furnace. Thus the stability of the rider arch is studied under the condition of increased load of checker brick in this research. The rider arch was estimated to be stable inspite of the increase of load according to the calculation. The max. sustained compressive stress of the rider arch is 163 kg/$cm^2$ and the max. sustained shear stress is 6.37 kg/$cm^2$.

• International Journal of Highway Engineering
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• v.8 no.4 s.30
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• pp.1-11
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• 2006

Currently, road mobility improved from the National Road Improvement. Nevertheless delineation system is facility that enhanced driver's safety, that was set up often inconsistent or nonexistent over the road exit ramp So it judged functional investigation will be necessary. This study suggested setting type of the delineation system. That was based on a field study and reviews the legal standard of it and considering driver's cognition behavior. For the study, make a 3D-simulation and so could objectively a comparative test. Comparison variable between delineation setting type is selected conspicuity and visibility. Cased that illustrated characteristics of driver's visual cognition behavior. The experiment was used Eye Marker Recorder for measure the gaze frequency more quantitatively and objectively. And used the ANOVA analysis for significance testing between delineation setting type. A significant percent of the conspicuity analyzed types(Safe mark, Obstacle Sign, Warning Light, and Tubular Maker) in road exit ramp for recognize. And gaze frequency that measure of effectiveness of visibility are measured. On the analysis result, the visibility was significance difference between delineation setting type and visibility of types was best.

• The monthly packaging world
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• s.157
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• pp.145-153
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• 2006

• Proceedings of the Korean Radioactive Waste Society Conference
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• 2007.05a
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• pp.215-216
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• 2007

원전에서 발생하는 중 저준위방사성폐기물(이하, "방폐물"이라 함)을 처분시설로 운반하는 것은 원전과 처분시설이 임해지역에 위치하고 있으므로 육상운반보다는 선박을 이용하는 해상운반이 효율적이다. 해상운반은 무엇보다 다량운반이 가능하며 이로 인하여 운반회수가 줄고, 인구밀집지역을 지나지 않아도 되기 때문에 방폐물의 운반에 대한 위험도가 상대적으로 적어 안전성 확보에 유리하다. 방폐물의 해상운반은 운반 도중 방사성물질의 위험으로부터 인간과 환경을 보호하기 위하여 국제원자력기구(IAEA)의 안전운반규정, 국제해사기구(IMO)의 국제해상위험물규칙, 국내 원자력법 등 국내외의 엄격한 기술기준에 따라 안전성이 철저하게 보장되어야만 한다. 한국수력원자력(주)(이하, "한수원"이라 함)는 원전(월성원전 제외)에서 처분시설까지 방폐물을 안전하고 효율적으로 운반하기 위하여 전용운송선박, 운반용기, 전용운반차량 및 원전 물량장 등으로 이루어지는 해상운반시스템을 구축하여 운영할 것이다.

• Proceedings of the Korea Information Processing Society Conference
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• 2023.11a
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• pp.1074-1075
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• 2023

용접작업은 다양한 산업에서 이루어지는 중요한 작업인데 반해, 여러 가지 위험요소들로 인해 작업자의 건강에 위협을 가할 수 있다. 또한, 용접 작업자들을 효율적으로 관리할 수 있는 안전점검인력이 부족한 실정이다. 이에 본 논문은 항만 용접 작업자의 안전을 위한 스마트헬멧 제작과 연동 APP을 개발하여, 체계적으로 작업자의 건강을 관리하고 안전사고를 미연에 방지하는 데에 그 목적이 있다.

• Journal of the Korean Society of Safety
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• v.15 no.2
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• pp.78-83
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• 2000

Generally, There is to install fire resist shutter or to compart between the office room and the atrium in the atrium buildings in Korea. But, Glass wall that is installed sprinkler which purpose to protect it from fire, is already installed between the office room and the atrium in the advanced nations. We study this problem as follow; We made the fire scenario, and analyze each scenario using FASTLite is fire modeling software and BREAK1 is to predict the window breakage time in the compartment fire. In this study, we can decide that fire compartmentalization between atrium and office rooms doesn't require in Atrium building if the material and fire protection system were reliable. Consequently, Korean Fire Protection Regulations have to consider in direction of increasing freedom of building.