• Proceedings of the KSPS conference
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• 2002.11a
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• pp.165-168
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• 2002

This research was conducted to investigate the priming effect in Korean and English word production by Korean speakers. Picture-naming with distractors was used as experimental task. The type of target language, the type of distractor language and SOA(Stimulus Onset Asynchrony) were used as variables. Cross-linguistic priming effect and within-linguistic priming effect were mesured to investigate bilinguals' conceptual system.

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2000.11a
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• pp.118-123
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• 2000

화재에 대한 소화방법으로서는 점화원의 냉각, 산화제 농도의 감소에 의한 화염의 질식 및 제거소화와 부촉매를 이용한 소화법이 있다. 이중 냉각소화방법은 주로 물을 사용하여 화재를 진압하고 있으나, 유류화재와 전기화재 등에서는 물보다 할론소화약제가 효과적으로 사용되어 왔다. 그러나 할론 등 CFC 계통의 소화약제는 환경오염물질을 내포하며, 지구온난화지수와 오존파괴지수 등이 높아 전세계적으로 그 사용이 중단되고 있다. 이에 대한 대체 기술의 하나로 최근에 관심이 고조되기 시작한 소화기술은 분무 노즐을 이용한 미세물분무(water mist) 소화설비이다.(중략)

• Proceedings of the Korean Institute of Industrial Safety Conference
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• 2000.06a
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• pp.136-139
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• 2000

현대산업사회의 급속한 발전으로 사용이 편리하고, 깨끗한 연료인 도시가스의 사용량은 점점 더 증대될 뿐만 아니라 사용형태 또한 다양화되고 있어, 이에 따른 사고도 증가하고 있으며 사고의 규모도 대형화 되어가고 있다. 일반적으로 가스폭발의 경우 개방된 영역에서 보다 밀폐된 영역에서 발생할 경우 폭발압력에 의한 파괴효과는 더욱 증가한다. 이러한 부분에 대해 많은 학자들은 단일가스와 산화제를 혼합시킨 형태의 가스 폭발에 대한 특성을 연구하여 왔다. 그러나 산소농도의 변화에 따른 가연성가스의 폭발범위, 폭발시 초기압력의 변화, 최소점화에너지에 관한 연구는 거의 없는 실정이다. (중략)

• 한국연소학회:학술대회논문집
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• 2003.05a
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• pp.27-32
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• 2003

Diesel-Fueled HCCI(Homogeneous Charge Compression Ignition) Engine is an advanced combustion process explained as a premixed charge of diesel fuel and air is admitted into the cylinder and compression ignited. It has possibility to reduce NOx by spontaneous auto-ignition at multiple points that allows very lean combustion resulting in low combustion temperatures. Also PM could be reduced by the premixed combustion and no fuel-rich zones. But HCCI couldn't be realized because of the difficulties in vaporizing the diesel, control of combustion phase directly. To solve these problems, new fuel injection strategy, explained as the pilot fuel injection to promote ignition near TDC following the main fuel injection at the extremely advanced timing, is applied during the compression ratio is varied from 18.9:1 to 27.7:1 This is not a pilot fuel to promote the ignition but also the direct control method of the combustion phase. Experimental result shows the pilot fuel injection promote the ignition and the compression ignition of the HCCI engine is achieved as compression ratio becomes higher. Also there is an optimal pilot fuel injection timing for the HCCI combustion. NOx is reduced more than 90% compared to DI-Diesel case but PM and THC emission needs more investigation.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2011.11a
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• pp.369-374
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• 2011

To solve the combustion instability, especially chuffing phenomena, happened during development process of the drive-away motor that was required for cold launch system of missile, we tried various technical approaches and performed ground firing tests. The supplying content or method of ignition energy, generally that is deeply related with the chuffing phenomena, does not affect suppression of the chuffing, but the addition of 2% ZrC as a damping material is effective to suppress the chuffing. Therefore we could newly experience a special solution of the combustion instability in double base propellant.

• Korean Journal of Cognitive Science
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• v.11 no.3_4
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• pp.13-22
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• 2000

The present study examined the role of spatial attention in implicit memory for words when the word identity processing was not required. Spatial attention to the identity-irrelevant perceptual features of the words was manipulated by using a visual search task (Experiment 1) or a focused attention task (Experiment 2). In two e experiments. a significant priming effect was not found for the target words as well as for the distractor words. Implicit memory for words was not affected by spatial attention on the perceptual properties of the words. indicating that the word identity processing is required to produce priming.

• Journal of the Korean Society of Propulsion Engineers
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• v.16 no.4
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• pp.93-98
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• 2012

To solve the combustion instability, especially chuffing phenomena, happened during development process of a drive-away motor that was required for cold launch system of missile, various technical approaches have been performed through ground firing tests. The ignition energy or its supply system, generally closely related with the chuffing phenomena, does not affect suppression of the chuffing, but the increase of characteristic length($L^*$) as well as the addition of 2% ZrC as a damping material is effective to suppress the chuffing. Therefore we could have a typical experience on the combustion instability in double base propellant.

• Korean Journal of Culture and Social Issue
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• v.24 no.2
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• pp.337-364
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• 2018

Abortion is prohibited in the Philippines by the law of Christianity. Korean fathers wanted abortions when Filipino mothers were pregnant with their babies (Kopino). However, Filipino mothers had to give birth to the Kopino babies. Therefore, Kopino mothers bring up their babies alone. This study tried to measure and compare what Korean and Filipino evaluate towards Kopino mothers explicitly or implicitly. In addition, this study examined how their attitudes towards Kopino mothers change when the Christianity was primed. As a result of this study, Filipino participants, both explicitly and implicitly, liked more about Kopino mothers than Korean participants. Also, Korean participants showed a little positive explicit attitude and implicit attitude towards Kopino mothers. However, Korean males answered that they liked Kopino mothers at the explicit scale, but they had a negative attitude against Kopino mothers at the implicit level. After activating the Christianity by priming, Filipino participants showed a significant increase of positive attitude towards Kopino mothers at the implicit level. On the other hand, Korean participants remained unaffected. Hence, the priming effect of Christianity varied by country. This study confirmed that Korean females didn't have prejudice against Kopino mothers like Filipino but Korean males had prejudice against them.

• Transactions of the Korean Society of Mechanical Engineers B
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• v.37 no.8
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• pp.743-752
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• 2013

This is the second paper on the combustion characteristics of landfill gas in a constant volume combustion chamber for a large displacement volume commercial engine, and it discusses the combustion process on the basis of pressure measurements. The results show that the bimodal peak pressure phenomenon, which is caused by the interaction of the heat release and the heat transfer, is more apparent as the mixtures are more favorable to combustion, and the magnitudes of the pressures depend on the unburned fraction. In addition, there exist four main inflection points during heat release owing to variations in the heat transfer area related to flame propagation from the ignition point. Furthermore, the number of inflection points increases as the mixture quality worsens because of the extended burn duration. Consequently, the sophisticated interactions between the heat transfer area changing pattern due to flame propagation and transfer duration might cause very peculiar heat release patterns.

• Proceedings of the Korean Society of Propulsion Engineers Conference
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• 2011.04a
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• pp.371-374
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• 2011

High-resolution numerical study is carried out to investigate the flame stability of the turbulent supersonic combustion in a Dual-Combustion Ramjet (DCR). The auto-ignition in a shear layer between hydrogen/carbon-monoxide syngas and air was studied at elevated enthalpy condition. Comparison of a constant area combustor and a combustor with a small divergence angle shows that the supersonic combustion has a characteristics of the lifted flame and its stability is influenced significantly by the compressibility.