• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.61-62
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• 2022

알츠하이머성 치매는 현존하는 치료법이 없어 경도인지장애 단계에서의 예방이 중요하다. 지금까지의 알츠하이머 연구는 대부분이 뇌영상 마커와 뇌척수액 마커에 집중되어 있었으며, 경도 인지 장애 단계에서의 탐색은 더욱 적었다. 이러한 점에서 혈액 유전자 발현을 이용한 경도 인지장애 단계 예측은 인지 능력에 따른 관련 유전자 식별과 접근 가능한 진단 및 치료 바이오 마커 탐색에 기여할 수 있다. 그러나 유전자 발현 데이터의 경우 환자 수에 비해 높은 차원을 가지기 때문에 과적합을 막고 질병 관련 유전자를 식별하기 위해서는 데이터에서의 의미 있는 차원만을 뽑아내는 차원 축소가 선행되야 한다. 본 연구는 유전자 발현데이터에서의 인지장애 분류를 위해 차원 축소기법과 신경망을 적용하여 인지 장애 정도를 예측하였다. 그 결과, Lasso 이용 차원축소와 신경망을 이용하여 97%의 정확도로 정상과 조기 경도 인지장애, 후기 경도 인지장애 환자를 분류 할 수 있었으며, 더 적은 차원에서도 분류가 가능했다. 이는 혈액 유전자 발현을 이용해 경도 인지장애 단계를 예측한 첫 번째 연구이며, 인지능력 저하에 따른 혈액 유전자 발현의 연관성을 확인하고 향후 조기 진단, 치료 표적 탐색에 기여한다.

• Archives of design research
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• v.15 no.4
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• pp.337-346
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• 2002

Among many design processes such as learning, storing, retrieving and applying, the process that learns design knowledge is very important for producing creative results that solve design purposes in design computations. The computer should have the ability similar to human in learning design knowledge. It should recognize not only physical properties but also high level design knowledge constructed from the first level physical properties. The high level design knowledge are recognised in terms of isometric translation relationships. This paper explains properties of isometric translation and methods how the computer can recognize high level shape design knowledge using shape pattern representation.

• Korean Journal of Cognitive Science
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• v.20 no.4
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• pp.439-479
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• 2009

This paper examines the aspects of the inferences between the dimensional terms in Korean, and attempts to give an account of the inference patterns based on the interaction of gestalt and position properties of spatial objects. Following Lang (1987) and Lang, Carstensen & Simmons (1991), we advance the idea that the inferences are possible for the same axis of a spatial object, if some contextually induced positional specifications are reversed to the inherent proportion schema. Two simple inference rules are proposed and justified. They are applied under the assumption that the inferences of the dimensional terms are drawn in a unidirectional way, i.e, from the Primary Perceptional Space to the Inherent Proportional Schema.

• Journal of The Korean Association For Science Education
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• v.35 no.2
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• pp.277-288
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• 2015

The purpose of this study is to find the point for improvement through the comparative analysis of the 2007 & 2009 revised science curriculum, and the NGSS of the United States with Bloom's revised taxonomy. The results of the analysis confirmed that the revised curriculum in 2009 compared to the revised curriculum in 2007 has expanded the type of cognitive process and knowledge, which promote a higher level thinking. However, the revised curriculum in 2009 has been biased to the type of specific cognitive process and knowledge in cognitive process dimension and knowledge dimension as compared to the NGSS of the United States. In the revised curriculum in 2009, the type of cognitive process such as 'analyze,' 'evaluate,' 'create,' and the type of knowledge such as 'meta-cognitive knowledge' have been treated inattentively. In addition, through comparative analysis, it was identified that the type of cognitive process and knowledge that were neglected in achievement standards were not dealt with in the learning objective of teachers' guides, either. The revised curriculum should consist of achievement standards in comparison to the previous curriculum to reflect better the goals of science education. Therefore, it is necessary to create an achievement standards including various types of cognitive processes and knowledge by improving the method of statement of achievement standards of science curriculum.

• Journal of the Korean Geophysical Society
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• v.7 no.4
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• pp.247-253
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• 2004

In this paper, 3D recognizing algorithm which is based on the external shape feature is presented. Since many objects have the regular shape, if we posses the database of pattern and we recognize the object using the database of the object's pattern, it is possible to inspect and/or recognize the objects of many fields. This paper handles on the 3D object recognition algorithm using the geometrical pattern matching by 3D database.

• The Journal of the Korea Contents Association
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• v.10 no.5
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• pp.436-445
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• 2010

The purpose of this research is to know what factors have impacts on their risk perception and attitude in risk communications. This research shows the research findings that the determinant factors of risk perception are the possibility to control the risk, benefits of recognition, the specialty of risk management, and the usefulness of information about the risk. And also the results have shown that the determinant factors of risk attitudes are the possibility to control the risk, the understanding of science and technology, the familiarity with the risk, the usefulness information about the risk, the accuracy of information, and the initiative in the protection of citizens from the risk. As the results have indicated, common determinant factors are the usefulness of information about the risk and the possibility to control the risk. Both of them that affect risk perception and attitudes on electromagnetic waves are important factors in risk communication research. Therefore this study shows that what factors suppose to be considered important in risk communication process about risk of electromagnetic waves.

• Information and Communications Magazine
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• v.34 no.2
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• pp.73-82
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• 2017

3차원 영상의 촬영 및 재생은 마치 우리에게 카메라와 텔레비전의 존재가 지극히 당연한 것처럼 낯설지 않은 주제가 되었다. 3차원 영화에 대한 시장의 본격적인 반응이 시작된 지도 거의 10년이 돼가고, 최근 몇 년 사이에는 가상/증강현실에 관한 기술이 빠르게 대중화되고 있다. 이런 흐름 속에서 3차원 광정보처리 기술 개발의 다음 행선지는 어디인지, 그리고 그 다음은 어디인지를 심사숙고하고 관련 연구를 착실히 수행해 나갈 필요가 있다. 1장에서는 3차원 광정보 취득 및 재생 기술의 근황, 2장에서는 차세대로 불릴 만한 기술들을 서술한다. 그리고 3장 이후로는 여러가지 기술 중, 궁극의 3차원 정보 처리로 일컬어지는 홀로그래피 기술에 대해 서술한다.

• Asia Marketing Journal
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• v.13 no.3
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• pp.163-182
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• 2011

The focus of this paper is to investigate cognitive development of brand heuristics in the mind of a young consumer as the consumer matures. This issue was examined by comparing the nature of the set of associations (that form the brand heuristic) given by consumers across four different age groups, with each age group representing a distinct stage of cognitive maturity. It is found that there are fundamental differences in the way the different age groups perceive the brand. The research method uses the novel approach of classifying the elicited associations into the three types of brand associations: attributes, benefits and attitudes. This classification enables comparisons of the nature of brand associations and the changes that occur as a consumer matures. To conclude, implications for theory and practice are discussed.

• Korean Journal of Cognitive Science
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• v.28 no.1
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• pp.43-64
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• 2017

The purpose of the current study is to investigate how task-irrelevant affective priming affects higher cognitive function. In the study, we selected prime stimuli from International Affective Picture System(IAPS) and examined if they influence participants' performance of syllogistic reasoning task when they are task-irrelevant. In Experiment 1, arousal of IAPS stimuli was controlled while valence of the stimuli was manipulated. In Experiment 2, valence of IAPS stimuli was controlled while arousal of stimuli was manipulated. In both experiments, task-irrelevant affective primes were followed by syllogistic reasoning tasks consisting of three sentences and measured accuracies of task performance. The results showed that valence of affective prime affected logical validity of reasoning and belief-bias whereas arousal of affective primes did not yield any difference. That is, positive valence facilitated logical and analytic processing by reducing belief-bias while arousal did not affect reasoning task performance. These results suggest that dimensions of valence and arousal independently influence higher cognitive function.

• Journal of the Korea Fashion and Costume Design Association
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• v.8 no.1
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• pp.145-154
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• 2006

본 연구는 미국 쇼핑몰 내에서의 소비자행동에 관한 것으로, 인구통계학적 변수와 소핑가치 및 쇼핑의도와의 관계를 모델검증을 통하여 밝혔다. 우선 쇼핑가치와 쇼핑의도 하위차원의 구조를 살펴보면, 소비자가 인지한 쇼핑가치를 쾌락적 쇼핑가치와 실용적 쇼핑 가치로 구분하였다. 또한 기존연구와는 달리 쇼핑의도 변수에 있어서는 다차원적인 구조의 접근을 시도하여 쇼핑의도의 차원을 경제적, 외식, 기분전환, 서비스 이용 의도로 분류한 모델을 제시하였다. 인구통계학적 변수는 소비자가 인지한 쇼핑가치에 영향을 미치고 쇼핑가치는 소비자의 쇼핑의도에 영향을 미치는 인과적인 모델을 검증해본 결과를 살펴보면, 다음과 같다. 제시된 쇼핑가치 및 쇼핑의도의 차원은 통계적으로 유의하였으며, 인종 및 성별의 인구통계학적 변수는 쇼핑가치에 영향을 미치고 쇼핑가치는 쇼핑의도에 영향을 미치는 모델의 구조 또한 유의한 것으로 나타났다. 실용적 쇼핑 가치의 인지에 있어서 백인과 흑인간의 차이는 없었으나, 쾌락적 쇼핑 가치에서는 차이를 보여 흑인이 백인보다 쾌락적 쇼핑가치를 더욱 느낀 것으로 나타났다. 성별의 차이에서는 쾌락적 쇼핑가치뿐 아니라 실용적 쇼핑가치에서도 여성이 남성보다 더 큰 반응을 보였다. 또한 쾌락적 및 실용적 쇼핑가치 모두 쇼핑의도의 전체 차원들과 정적인 관계가 있는 결과를 보여, 실용적 쾌락적 쇼핑가치를 더욱 인지하면 할수록 경제적, 외식, 기분전환, 서비스 이용의 쇼핑의도 모두 높은 것으로 나타났다.