• Geomechanics and Engineering
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• 제21권6호
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• pp.537-549
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• 2020

The presence of cracks changes the water content pattern during seepage through a cracked soil as compared to that of intact soil. In addition, several different crack networks may form in one soil type. These two factors result in a variation of water contents in the soil matrix part of a cracked soil during seepage. This paper presents an investigation of the effect of crack network representation on the water content of the soil matrix part of cracked soil using numerical models. A new method for the numerical generation of crack networks incorporating connections among crack endpoints was developed as part of the investigation. Numerical analysis results indicated that the difference in the point water content was large, whereas the difference in the average water content was relatively small, indicating the uniqueness of the crack network representation on the average water content of the soil matrix part of cracked soil.

• Journal of Web Engineering
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• 제21권3호
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• pp.677-692
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• 2022

Recognizing the offensive, abusive, and profanity of multimedia content on the web has been a challenge to keep the web environment for user's freedom of speech. As profanity filtering function has been developed and applied in text, audio, and video context in platforms such as social media, entertainment, and education, the number of methods to trick the web-based application also has been increased and became a new issue to be solved. Compared to commonly developed toxic content detection systems that use lexicon and keyword-based detection, this work tries to embrace a different approach by the meaning of the sentence. Meaning representation is a way to grasp the meaning of linguistic input. This work proposed a data-driven approach utilizing Abstract meaning Representation to extract the meaning of the online text content into a convolutional neural network to detect level profanity. This work implements the proposed model in two kinds of datasets from the Offensive Language Identification Dataset and other datasets from the Offensive Hate dataset merged with the Twitter Sentiment Analysis dataset. The results indicate that the proposed model performs effectively, and can achieve a satisfactory accuracy in recognizing the level of online text content toxicity.

• Journal of the Korean Academy of Child and Adolescent Psychiatry
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• 제10권1호
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• pp.21-33
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• 1999

자기보고 능력이 부족하다고 알려진 학령전기 아동의 임상 평가는 외부관찰자의 보고에 의존하는 점이 많고 아동 자신의 내적인 경험, 생각, 감정에 대한 직접적인 평가가 어렵다. 본 연구에서는 놀이 상황에서 학령전기 아동의 내적 마음의 표상을 알아보기 위해 개발된 MacArthur Story-Stem Battery(MSSB)를 사용하여 정상 아동의 내적 마음의 표상의 발달에 대한 연구를 시행하여 학령전기 아동의 임상 평가에 도움을 주고자 하였다. 본 연구는 만 3세부터 7세까지의 정상 아동 55명(남아 32명, 여아 23명)에서 MSSB, 언어평가(Peabody Picture Vocabulary Test-Revised), 지능평가를 시행하고 비디오로 녹화하여 분석하였으며 결과는 다음과 같다. 1) 정서적인 갈등 상황을 설정한 놀이에서 아동들은 비전형적 부정적 반응, 보상/죄의식, 처벌, 개인적 상해 등의 부정적인 정신적 표상이 흔히 표현되었다. 2) 부모에 대한 정신적 표상은 긍정적 표상, 훈육적 표상, 부정적 표상의 순으로 표현되었다. 3) MSSB 내용 주제요인 분석 결과, 비전형적 부정적 반응, 공격성, 개인적 상해, 배제로 묶이는 공격적 주제, 애정, 제휴, 죄의식/보상으로 묶이는 친사회적 주제, 처벌과 불복종으로 묶이는 반항적 주제 세 가지로 나타났다. 4) 부모에 대한 정신적 표상과 MSSB 내용 주제와의 상관관계를 살펴보면, 부모에 대한 긍정적 표상은 친사회적 주제와(r=0.40), 부정적 표상은 공격적 주제와(r=0.52) 그리고 훈육적 표상은 반항적 주제와(r=0.75) 유의미한 양의 상관관계를 보였다. 5) 부모에 대한 정신적 표상과 MSSB 정서 반응과의 상관관계를 살펴보면, 부모에 대한 긍정적 정신적 표상과 불안 사이에 유의미한 부적 상관관계(r=-0.43)를 보였다. 6) MSSB 내용 주제와 정서 반응사이의 상관관계를 살펴보면, 공격적 주제(r=0.28)와 반항적 주제(r=0.29)는 고통의 감정 반응과 유의미한 양적 상관관계를 보였고 친사회적 주제는 근심(r=-0.29), 불안(r=-0.43)과 유의미한 부적 상관관계를 보였다. 이상의 결과에 의하면 정서적인 갈등을 야기하는 놀이 상황에서 학령전기 아동들은 부정적인 정신적 표상을 흔히 보였으며 부모들은 자신들을 도와주는 긍정적인 표상으로 나타남을 알 수 있다. 또한 공격적 주제를 많이 보이는 아동들은 부정적인 정서 반응과 부모에 대해 부정적인 정신적 표상을 많이 나타냄을 알 수 있다.

• International Journal of Knowledge Content Development & Technology
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• 제10권2호
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• pp.19-37
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• 2020

There are limited research questioning the relationship between the disabled community and media, particularly in Malaysia. The lack of awareness and common assumption of specialty towards the disabled community have caused a small amount of local disability researches that question the relationship between the disabled community and the media. This research aims to find out the types of representation of disability in the Malaysian mainstream media, particularly press. Interview with visual disabled personnel and content analysis from news coverage of mainstream press are deployed in the study. The findings indicated the invalidity of disability culture as the misrepresentation of disabled community in Malaysia is not as severe as depicted by scholars because the news coverage focusing on them is getting more positive. Besides that, disabled people are not defensive towards the terms used to refer them as long as media practitioners do not over amplify their disability. The application of charity approach is still common in news coverage to portray the disabled community as victim, and therefore they are partially marginalized due to the misrepresentation in Malaysian mainstream press.

• 대한화학회지
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• 제56권1호
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• pp.128-136
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• 2012

이 연구에서는 중등학교 과학 교사 20명을 대상으로 밀도에 대한 내용 표상을 조사하여 각 교사의 밀도 수업과 관련된 내용교수지식 수준을 판단하고, 그에 따라 내용 표상의 구성 요소별로 어떤 특징이 있는지를 분석하였다. 연구결과, 과학 교사들의 내용교수지식 수준은 전반적으로 보통 수준으로 판명되었다. 교사들의 내용교수지식 수준에 따라 나타나는 내용 표상의 구성 요소별 특징은 '학습자의 선개념에 대한 이해'를 제외한 7개의 구성 요소에서 차이가 크게 나타남을 알 수 있었으며, 이 연구에서는 그 차이를 구성 요소별로 분석하고, 그 특징을 추출하였다. 또한, 내용교수지식 수준이 중간인 교사들에게서 나타난 내용 표상의 구성 요소별 특징은 내용교수지식 수준이 높은 교사들 보다는 낮은 교사들과 대부분의 구성 요소에서 비슷한 것으로 밝혀졌다.

• 한국수학교육학회지시리즈A:수학교육
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• 제45권2호
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• pp.177-189
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• 2006

This study focuses on the analysis of prospective elementary teachers' representation of trapezoid area and teacher educator's reflecting in the context of a mathematics course. In this study, I use my own teaching and classroom of prospective elementary teachers as the site for investigation. 1 examine the ways in which my own pedagogical content knowledge as a teacher educator influence and influenced by my work with students. Data for the study is provided by audiotape of class proceeding. Episode describes the ways in which the mathematics was presented with respect to the development and use of representation, and centers around trapezoid area. The episode deals with my gaining a deeper understanding of different types of representations-symbolic, visual, and language. In conclusion, I present two major finding of this study. First, Each representation influences mutually. Prospective elementary teachers reasoned visual representation from symbolic and language. And converse is true. Second, Teacher educator should be prepared proper mathematical language through teaching and learning with his students.

• 정보통신설비학회논문지
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• 제9권2호
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• pp.73-79
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• 2010

The most popular technique for image retrieval in a heterogeneous collection of color images is the comparison of images based on their color histogram. The color histogram describes the distribution of colors in the color space of a color image. In the most image retrieval systems, the color histogram is used to compute similarities between the query image and all the images in a database. But, small changes in the resolution, scaling, and illumination may cause important modifications of the color histogram, and so two color images may be considered to be very different from each other even though they have completely related semantics. A new method of color feature representation based on the 3-dimensional RGB color map is proposed to improve the defects of the color histogram. The proposed method is based on the three 2-dimensional projection map evaluated by projecting the RGB color space on the RG, GB, and BR surfaces. The experimental results reveal that the proposed is less sensitive to small changes in the scene and that achieve higher retrieval performances than the traditional color histogram.

• Journal of information and communication convergence engineering
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• 제2권2호
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• pp.123-127
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• 2004

The most popular technique for image retrieval in a heterogeneous collection of color images is the comparison of images based on their color histogram. The color histogram describes the distribution of colors in the color space of a color image. In the most image retrieval systems, the color histogram is used to compute similarities between the query image and all the images in a database. But, small changes in the resolution, scaling, and illumination may cause important modifications of the color histogram, and so two color images may be considered to be very different from each other even though they have completely related semantics. A new method of color feature representation based on the 3-dimensional RGB color map is proposed to improve the defects of the color histogram. The proposed method is based on the three 2-dimensional projection map evaluated by projecting the RGB color space on the RG, GB, and BR surfaces. The experimental results reveal that the proposed is less sensitive to small changes in the scene and that achieve higher retrieval performances than the traditional color histogram.

• 정보처리학회논문지D
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• 제9D권1호
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• pp.31-42
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• 2002

본 논문에서는 비디오 데이터가 지니는 이동 객체의 궤적(Moving Object's Trajectory)을 효과적으로 모델링할 수 있는 시공간 표현 기법(Spatio-Temporal Representation Scheme)과 궤적을 이용한 사용자 질의에 대해 효율적인 검색을 위한 새로운 시그니쳐 기반 접근 기법을 제안한다. 제안하는 시공간 표현 기법은 궤적을 기반으로 하는 내용 기반 검색(Content-based Retrieval)과 궤적에서 일어나는 위치 정보를 통해 얻어진 개념(의미)을 이용한 개념 기반 검색(Concept-based Retrieval)을 지원한다. 아울러, 제안하는 시그니쳐 기반 접근 기법은 데이터 파일을 직접 접근하기 전에 전체 시그니쳐들은 탐색하여 필터링을 수행한 후, 검색된 후보 시그니쳐들에 대해서만 디스크를 접근하기 때문에 순차 탐색에 비해 많은 수의 디스크 접근 횟수를 감소시킴으로써 검색 성능을 향상시킨다. 마지막으로, 성능 평가를 통해 제안하는 방법이 검색 효과(Retrieval Effectiveness) 및 효율(Retrieval Efficiency) 측면에서 기존의 방법인 Li나 Shan의 방법에 비해 우수함을 보인다.

• Journal of Computing Science and Engineering
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• 제8권2호
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• pp.65-77
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• 2014

To address the problem of multi-target retrieval (MTR) of remote sensing images, this study proposes a new object-level feature representation model. The model provides an enhanced application image representation that improves the efficiency of MTR. Generating the model in our scheme includes processes, such as object-oriented image segmentation, feature parameter calculation, and symbolic image database construction. The proposed model uses the spatial representation method of the extended nine-direction lower-triangular (9DLT) matrix to combine spatial relationships among objects, and organizes the image features according to MPEG-7 standards. A similarity metric method is proposed that improves the precision of similarity retrieval. Our method provides a trade-off strategy that supports flexible matching on the target features, or the spatial relationship between the query target and the image database. We implement this retrieval framework on a dataset of remote sensing images. Experimental results show that the proposed model achieves competitive and high-retrieval precision.