• Korean Journal of Cognitive Science
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• v.18 no.4
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• pp.371-398
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• 2007

This study examined effects of word frequency and semantic transparency on decomposition processes of compound nouns by semantic priming task and repetition priming task. In Experiment 1, it was investigated that decomposition process depended on word frequency of compound noun. Semantic priming effects were found In the compound noun's associate rendition consistently, and repetition priming effects were found in the whole rendition as well as in the part condition irrespective of word frequency and SOA. These results implied that compound noun was processed through decomposition process path and direct access path. In Experiment 2, Effects of semantic transparency on decomposition processes of compound nouns were examined. Semantic priming effects were found when compound nouns' associates were presented as primes irrespective of semantic transparency and SOA, and results were the same as experiment 1b in repetition priming task. Results of experiment 1 and 2 implies that compound nouns are interpreted by interactive activation processes of attributes activated by decomposition path and direct access path.

• The Journal of Korean Association of Computer Education
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• v.9 no.2
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• pp.89-99
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• 2006

This paper proposes a computational model which can simulate peculiar language phenomena observed in human lexical decision task. The model is designed to mimic major language phenomena such as frequency effect, lexical status effect, word similarity, and semantic priming effect. The experimental results show that the propose model replicated the major language phenomena and performed similar performance with that of human in LDT.

• Korean Journal of Cognitive Science
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• v.21 no.4
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• pp.603-625
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• 2010

Neural representation of a visual object is distributed across visual cortex and overlapped with those of many other objects. Thus repeating an object facilitates the recognition of the object while it impairs the recognition of other objects. These effects are called repetition priming and antipriming, respectively. Two experiments investigated a new phenomenon of repetition antipriming, in which a repeated object itself is antiprimed. The learning stage presented object pictures which were degraded at various levels. Participants determined how recognizable each object was. Then, the test stage presented the intact version of the object pictures and made participants to perform a categorization task. Both Experiment 1 and 2 found that the processing of the objects that had been recognized were facilitated (repetition priming) while the processing of the objects that had been perceptually ambiguous were impaired (repetition antipriming). These findings suggest that experiencing a perceptually ambiguous object might enhance the connection between feature-level representations and multiple object-level representations, which impairs the subsequent recognition of the repeated object.

• Annual Conference on Human and Language Technology
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• 2009.10a
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• pp.73-76
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• 2009

본 논문에서는 한국어 단어를 산출하는 과정에서 음절 내 부호화 과정을 규명하기 위해 2개의 단어번역과제 실험을 수행하였다. 한국어 산출에서 종성점화효과를 검증한 실험 1에서 종성 반복 조건과 통제조건 간에 단어번역시간에서 차이를 보이지 않았다. 반면에 실험 2에서는 11ms의 부적인 중성점화효과를 보였다. 구민모와 남기춘(2009)과 본 연구의 결과를 종합하면, 다음과 같은 결론에 도달한다: (1) 한국어 산출 어휘집에서 음절은 "음절체+종성"의 위계적인 내적 구조로 표상된다. (2) 음절 내 부호화는 음절체와 종성이 계열적인 순서로 진행된다. (3) 음절체를 구성하는 초성과 중성이 계열적인 순서로 음절구조에 삽입된다.

• Proceedings of the Korean Society for Cognitive Science Conference
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• 2005.05a
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• pp.273-277
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• 2005

본 연구는 한국어 어말어미 산출시 나타나는 대뇌 활성화 영역을 살펴보기 위하여 실시되었다. 두 가지 실험이 실시되었다 실험 1은 어말어미의 기본형을 주고 이를 의문형, 명령형으로 산출하는 고립단어 실험을 실시하였다. 통제 조건으로 모음변환조건(C1)과 아라비아문자보기(C2)를 사용하였다. 실험 1의 결과 ‘어말어미-C1’ 조건에서 좌반구의 측두엽과 전두엽부분의 의 활성화 superior temporal gyrus와 inferior frontal gyrus의 활성화가 관찰되었다. ‘어말어미-C2’ 의 조건에서 우반구에서 후두엽의 활성화와 좌반구에서의 후두엽, 전두엽, lingual G, Cuneus, fusiform G, inferior occipital G에서의 활성화를 관찰할 수 있었다. 실험 2는 명령형과 의문형 어미의 형태점화효과와 관련된 대뇌 활성화 영역을 관찰하기 위하여 Er-fMRI 기법을 이용하여 실시되었다. 실험 조건은 어미동일조건, 어간반복조건, 무관련 조건으로 구성되었다. 피험자들은 점화자극이 제시된 후 신호가 제시되고 나오는 표적단어를 의문형 또는 명령으로 산출하도록 하는 과제를 실시하였다. 뇌 활성화 영역을 분석한 결과 의문형과 명령형을 산출할 때의 활성화 영역에서 $^{\ast}^{\ast}^{\ast}$를 볼 때의 영역을 빼기 (substraction)한 결과 공통적으로 좌반구 브로카 영역이 활성화되었고, 의문형과 명령형 안에서 어미동일조건에서 무관련 조건을 뺀 경우에는 좌반구의 superior temporal G 영역의 활성화가 관찰되었다. 이들 결과를 종합해 볼 때 어말어미 산출 그 자체와 직접 관련되는 영역으로는 좌반구의 측두엽과 전두엽 부분이 관찰되었다. 특히 한국어 어말어미 산출시 나타나는 형태점화 양상과 관련된 대뇌영역으로 발견된 브로카 영역에서의 활성화는 어미 변환과 관련된 영역이라기보다는 산출시 관련되는 articulation, motor coordinate관련 영역으로 추정되고, 측두엽의 활성화는 형태소, 의미 관련 지식의 data base로 추정된다. 또한 우반구 전두엽 부분에서 관찰된 활성화는 억제관련 영역으로 짐작된다.

• Journal of the Korea Institute of Construction Safety
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• v.1 no.1
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• pp.7-15
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• 2018

The purpose of this study is to analyze the limits of current measures to prevent fire accidents especially in the existence of polyurethane. Suffering numerous fire accidents, preventive measures are strengthened accordingly. However, in the existence of polyurethane, current measures are insufficient since it is still impossible to completely separate inflammables form ignition sources in case of polyurethane used as insulation. In order to identify blind spots of current fire prevention measures, this study conducted analysis on the previous fire accidents and the coverage of current legislative preventive measures. In conclusion, in order to perfectly prevent polyurethane fire accidents, not only controling of working condition but also substitution of noncombustible material for polyurethane is indispensible.

• Korean Journal of Culture and Social Issue
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• v.27 no.2
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• pp.139-165
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• 2021

In this study, we focused on the socio-structural factors that cause ageism, investigating whether the influence of the resource scarcity on ageism in the younger generation depends on socioeconomic status. To test this hypothesis, we conducted an online study of 219 adults in their 20s and 30s. Specifically, participants were randomly assigned to either the resource scarcity priming condition or the control condition, and completed a writing task. After this, participants responded to ageism and socioeconomic status items. As a result, the effect of resource scarcity on ageism was not significant. However, we found that socioeconomic status moderated the impact of resource scarcity on ageism. In other words, resource scarcity priming has been shown to significantly reduce ageism for individuals who have relatively lower socioeconomic status. This finding is in line with previous studies in which people of low socioeconomic status were found to be more sympathetic to socially disadvantaged individuals suffering deleterious situations such as resource scarcity. This work is significant in that we have looked at both the situational and personal factors influencing ageism, and in that we have attempted to examine the causal influence of resource scarcity on ageism through an experimental approach. However, since the alternative explanation of the findings has not been completely excluded, replication through further studies will be necessary.