• 한국음향학회지
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• 제22권3호
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• pp.194-201
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• 2003

음성인식에서 신뢰도 측정이란 인식된 결과에 대한 신뢰 여부를 결정하는 것이다. 신뢰도는 프레임을 음소 및 단어 수준으로 통합하여 측정된다. 단어 인식의 경우, 신뢰도를 이용하여 인식 결과와 미등록 어휘를 검증한다. 따라서 이러한 후처리를 통해 이를 인식 결과로 승인하지 않음으로써 성능을 높일 수 있다. 본 논문에서는 기존의 신뢰도 측정 방법인 로그 유사도 비를 수정하여 신뢰도를 측정하였다. 제안된 방법은 프레임 수준에서 음소 수준으로 신뢰도를 통합할 때 로그 유사도 비가 음수인 것만을 누적하는 것이다. 단어 인식기의 인식 결과에 대한 검증 성능을 기존의 방법과 비교한 결과, CAR (Correct Acceptance Ratio)이 90%인 지점에서 FAR (False Acceptance Ratio)을 미등록 어휘에 대해서는 약 3.49%, 오인식에 대해서는 15.25% 감소시킬 수 있었다

• 한국보육지원학회지
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• 제11권6호
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• pp.1-18
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• 2015

본 연구는 가정환경과 만 3세 유아의 언어발달, 그리고 또래유능성 간의 관계를 규명하기 위해 실시되었다. 즉, 유아의 가정환경이 바람직할 때 보다 나은 언어능력의 발달이 가능하며, 이는 어린이집 상황에서 보다 나은 긍정적 또래관계, 그리고 부정적 또래관계의 감소를 예측할 것으로 연구모형을 설정하고 이를 검증하였다. 연구대상은 한국아동패널에 참여하고 있는 유아 800명을 대상으로 하였으며, 이들의 4차년도 자료를 사용하였고, 구조방정식 모델링 기법이 적용되었다. 분석 결과, 가정환경과 유아의 어휘능력은 긍정적인 또래관계와 부정적인 또래관계 행동을 유의하게 예측하였다. 또한 유아 언어발달은 가정환경과 또래유능성을 유의하게 매개하는 것으로 밝혀져 유아의 사회적 관계 형성에 언어발달이 중요한 역할을 하고 있음을 시사한다.

• 아동학회지
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• 제21권4호
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• pp.69-79
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• 2000

This study compared the English and the Korean receptive competency of bilingual children with that of English and Korean monolingual children, respectively. The relation between English and Korean receptive competency of bilingual children was examined by age and gender. Subjects were 27 bilingual, 30 Korean monolingual, 24 English monolingual children. They were administered the revised form of the Peabody Pictures Vocabulary Test in Korean and English versions. Results show that bilingual children's Korean receptive competency is lower than those who spoke only Korean, and bilingual children's English receptive competency was a little lower than those who spoke only English, but the difference narrowerd with age. The relation between Korean and English competency in bilingual children was negative in 4- and 5-year-olds but became positive in 6-year-olds. This study shows that the two points-of-view on bilingual language development should be applied differently depending on children's age.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2005년도 춘계학술대회논문집
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• pp.83-86
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• 2005

The aim of this study is to establish the indoor noise limits of apartment houses for mad traffic noise. To achieve this goal, psycho-acoustic experiments were carried out with the mad traffic sound sources modulated by the transmission loss characteristics of the external windows. As a result of this study, followings are suggested. 1) On correlation between dose level and psycho-acoustical response, the initial level of negative feeling is located on $40.1{\sim}40.6$ Leq dB(A). 2) On the degree of satisfaction to road traffic noise, near 35% Point being same dissatisfaction degree is to be assumed $40{\sim}41$ dB(A) of indoor noise level presented into three vocabulary. It is suggested to be reasonable level of 40 dB(A) on the indoor noise limits for intruding road traffic noise, and it is appropriate to be the 5dB level difference between grades.

• 한국멀티미디어학회논문지
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• 제18권11호
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• pp.1391-1399
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• 2015

In recent times, studies sentiment analysis are being actively conducted by implementing natural language processing technologies for analyzing subjective data such as opinions and attitudes of users expressed on the Web, blogs, and social networking services (SNSs). Conventionally, to classify the sentiments in texts, most studies determine positive/negative/neutral sentiments by assigning polarity values for sentiment vocabulary using sentiment lexicons. However, in this study, sentiments are classified based on Thayer's model, which is psychologically defined, unlike the polarity classification used in opinion mining. In this paper, as a method for classifying the sentiments, sentiment categories are proposed by extracting sentiment keywords for major sentiments by using hashtags, which are essential elements of Instagram. By applying sentiment categories to user posts, sentiments can be determined through the similarity measurement between the sentiment adjective candidates and the sentiment keywords. The test results of the proposed method show that the average accuracy rate for all the sentiment categories was 90.7%, which indicates good performance. If a sentiment classification system with a large capacity is prepared using the proposed method, then it is expected that sentiment analysis in various fields will be possible, such as for determining social phenomena through SNS.

• 한국소음진동공학회:학술대회논문집
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• 한국소음진동공학회 2006년도 춘계학술대회논문집
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• pp.862-869
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• 2006

The purpose of this study is to propose the proper vocabularies for evaluating H.D TV set fan noise in residential condition. To achieve this goal, psycho-acoustic experiments were carried out with TV set fan noise modulated at specific frequency band. finally, a correlation analysis between vocabularies, and a factor analysis of psycho-acoustical responses were conducted. As a result of this study, followings are suggested. Analyzing the psycho-acoustical response corresponding to the various sound level, the higher the sound levels, the higher the response values were. It is estimated that the sound level determined psycho-acoustical responses. On the degree of response to fan noise, the initial level of negative feeling is located on $35{\sim}40$ dB(A). The factor of evaluating H.D. TV set fan noise has induced three the appropriate korean adjectives; Irritate, Monotonous, stuffy and dryness. The result of this study may be used to evaluate the acoustic threshold level for indoor noise or a basis for specifying the desired acoustic environment of dwellings.

• 한국소음진동공학회논문집
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• 제16권10호
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• pp.1014-1023
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• 2006

The purpose of this study is to propose the proper vocabularies for evaluating H.D TV set fan noise. To achieve this goal, psycho-acoustic experiments were carried out with TV set fan noise modulated at specific frequency band. Finally, a correlation analysis between vocabularies, and a factor analysis of psycho-acoustical responses were conducted. As a result of this study, followings are suggested. Analyzing the psycho-acoustical response corresponding to the various sound level, the higher the sound levels, the higher the response values were. It is estimated that the sound level determined psycho-acoustical responses. On the degree of response to fan noise, the initial level of negative feeling is located on $35{\sim}40$ dB(A). The factor of evaluating H.D. TV set fan noise has induced three the appropriate korean adjectives; Irritate, Monotonous, stuffy and dryness. The result of this study may be used to evaluate the acoustic threshold level for indoor noise or a basis for specifying the desired acoustic environment of dwellings.

• 교육시설
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• 제1권1호
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• pp.33-40
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• 1994

This study was taken to increase efficiency in reviewing documents of school facilities from the network of ERIV(Educational Resources and Information Center, USA). Outline of the ERIC network, and the structure, role, function of the ERIC thesaurus are introduced. A thesaurus have developed for information retrieval purpose provides the filing labels which permit information to be stored by one person and retrieved by another. As an information system grows, its thesaurus is systematically built and refined to the point where it represents, in a very special sense, the vocabulary of subject field. The Thesaurus of ERIC Descriptors represents such a vocabulary for the field education. An understanding of its origins, its function and its limitations, is just as important to the teacher, the student of education or the educational researcher as it is for the indexer or custodian of the information pool it represents. If the Thesaurus is understood and used in an appropriate way, it can give all educators not only insight into the ERIC system but also an increased awareness of the language of their field. A great many terms are necessary to describe the many aspects of education, and the task of relating them in even an approximately consistent way is an enormous one. The undertaking should be managed by people who not only know what they are talking about but who also should be able to predict what people in their field are lilely to be talking about in the near future. It should also enlist people who are willing to pay term to another within the system. To engage a large number of these two kinds of people over a long period of time is very likely to cost a great deal of money. There is very little proprietary value in producing such a list of terms, for it can very easily be copied, adapted, updated, etc. Thus, because of its high cost and low proprietary value, it becomes a task likely to be funded only by a government. A government has many ways of spending its money. However, after the decision has been made to spend money to produce an authority list, one must decide how this authority is to be delegated. The history of the development of the ERIC Thesaurus is the history of how this authority was delegated. Scientific research has thrived on efforts to define terms as precisely as possible. It is difficult to say with certainty, however, that solutions to social problems have thrived on a simple diet of scientific research. Contemporary crises demand new and imaginative ways of conceiving problems and talking about them. If this Thesaurus or any other scheme for normalizing or controlling language inhibits in the slightest measure the creative use of language, it is against it use. Only if the principles and details of the Thesaurus are misunderstood can it be used as a constraint on language in a negative sense. Students of education of every kind should see the The-saurus as an opportunity to become increasingly self-conscious about their language and thus about their assumptions and their approaches to educational problems.

• 한국콘텐츠학회논문지
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• 제16권10호
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• pp.393-402
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• 2016

기상청에서 현재 시행되고 있는 만족도 설문조사의 한계를 보완하기 위해 SNS를 통한 감성분석이 활용될 수 있다. 감성분석은 2011~2014년 동안 '기상청'을 언급한 트위터를 수집하여 나이브 베이즈 방법으로 긍정, 부정, 중립 감성을 분류하였다. 기본적인 나이브 베이즈 방법에 긍정, 부정, 중립의 각 감성에서만 출현한 형태소들로 추가사전을 만들어 감성분석의 정확도를 향상시키는 방법을 제안하였다. 분석결과 기본적인 나이브 베이즈 방법으로 감성을 분류할 경우 약 75%의 정확도로 학습데이터를 재현한데 반해 추가 사전을 적용할 경우 약 97%의 정확성을 보였다. 추가사전을 활용하여 검증자료의 감성을 분류한 결과 약 75%의 분류 정확도를 보였다. 낮은 분류 정확도는 향후 기상 관련의 다양한 키워드를 포함시켜 학습데이터 양을 늘려 감성사전의 질을 높임과 동시에 상시적인 사전의 업데이트를 통해 개선될 수 있을 것이다. 한편, 개별 어휘의 사전적 의미에 기반한 감성분석과 달리 문장의 의미에 기반하여 감성을 분류할 경우 부정적 감성 비율의 증가와 만족도 변화 추이를 설명할 수 있을 것으로 보여 향후 설문조사를 보완할 수 있는 좋은 수단으로 SNS를 통한 감성분석이 활용될 수 있을 것으로 사료된다.

• 한국컴퓨터게임학회논문지
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• 제31권4호
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• pp.101-110
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• 2018

본 논문은 2016년 기준 전국 고등학교 1학년 재학생을 대상으로 하여 청소년의 심리적 특성이 게임이용에 어떤 영향을 미치는지를 분석하였다. 게임은 한국의 대표적인 엔터테인먼트 산업의 한 분야로 문화콘텐츠로써의 강국이 되는데 큰 영향을 미치고 있는 산업 분야이다. 하지만 게임 과몰입은 게임 과몰입이라는 부정적인 어휘로 표현되며 사회문제 및 청소년 문제로 언급되며 게임이라는 콘텐츠에 부정적 인식을 심어주고 있다. 모든 사용자는 콘텐츠를 즐길 권리가 있음에도 불구하고 유독 게임에만 이런 부정적인 단어가 사용되며 마치 사회문제인 것처럼 잘못 포장되어지고 있다. 본 연구에서 기존 연구에서 도출되었던 많은 정서적 문제들은 일반 청소년의 경우 게임이용과 관련성을 보기 힘들었으며, '우울'과 관련된 문항들을 통해 일상생활에 대한 의욕이나 에너지가 부족한 학생들은 게임이용에서도 의욕이나 흥미를 나타내지 않는 경향을 나타내는 연구 결과를 얻을 수 있었으며 매사에 적극적이며 정서적으로 밝은 학생들이 게임 콘텐츠 이용 빈도 수 또한 높다는 결론을 통해 게임과 청소년 정서문제의 긍정적인 면을 도출하였다.