• 영어어문교육
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• 제1호
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• pp.69-108
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• 1995

Listening comprehension can be defined as a process of an integrative, positive and creative activity through which listeners get the message of speakers' production using linguistic or non-linguistic redundancy as well as linguistic or non-linguistic knowledge. Compared with reading comprehension, it has many difficulties especially for foreigners. while it can be transferred to the other skills: speaking, reading, writing. With this said, listening comprehension can be taught effectively using the following teaching strategies. First. systematic and intensive instruction of segmental phonemes, suprasegmental phonemes and sound changes must be given to remove the difficulties of listening comprehension concerned with the identification of sounds. Second, vocabulary drill through various games and other activities is absolutely needed until words can be unconsciously recognized. Without this, comprehension is almost impossible. Third, instruction of sentence structures is thought to be essential considering grammar is supplementary to listening comprehension and reading comprehension for academic purpose. So grammar translation drills, mechanical drills, meaningful drills and communicative drills should be performed in succession with common or frequently used structures. Fourth, listening activities for overall comprehension should teach how to receive overall meaning of intended messages intact. Linguists and literatures have listed some specific activities as follows: Total Physical Response, dictation, role playing, singing songs, selective listening, picture recognition, list activities, completion, prediction, true or false choice, multiple choice, seeking of specific information, summarizing, problem-solving and decision-making, recognization of relationships between speakers, recognition of mood, attitude and behavior of speakers.

• Communications for Statistical Applications and Methods
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• 제27권3호
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• pp.313-326
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• 2020

Deep Learning is the most important key to the development of Artificial Intelligence (AI). There are several distinguishable architectures of neural networks such as MLP, CNN, and RNN. Among them, we try to understand one of the main architectures called Recurrent Neural Network (RNN) that differs from other networks in handling sequential data, including time series and texts. As one of the main tasks recently in Natural Language Processing (NLP), we consider Neural Machine Translation (NMT) using RNNs. We also summarize fundamental structures of the recurrent networks, and some topics of representing natural words to reasonable numeric vectors. We organize topics to understand estimation procedures from representing input source sequences to predict target translated sequences. In addition, we apply multiple translation models with Gated Recurrent Unites (GRUs) in Keras on English-Korean sentences that contain about 26,000 pairwise sequences in total from two different corpora, colloquialism and news. We verified some crucial factors that influence the quality of training. We found that loss decreases with more recurrent dimensions and using bidirectional RNN in the encoder when dealing with short sequences. We also computed BLEU scores which are the main measures of the translation performance, and compared them with the score from Google Translate using the same test sentences. We sum up some difficulties when training a proper translation model as well as dealing with Korean language. The use of Keras in Python for overall tasks from processing raw texts to evaluating the translation model also allows us to include some useful functions and vocabulary libraries as well.

• Child Studies in Asia-Pacific Contexts
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• 제3권2호
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• pp.123-137
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• 2013

Individuals rely on Theory of Mind (ToM) to represent themselves, others, and socio-cultural norms. Distinctive Western and Eastern developmental patterns of ToM have been reported in monocultural children. Relatively little is known about bicultural children, especially those children who grow up in two conflicting and unbalanced cultures. We hypothesized that the development of ToM in these bicultural preschoolers would follow the pattern of the dominant culture. To examine this hypothesis, we recruited English-speaking Chinese Singaporean preschoolers. In Study 1, we tested 3- to 5-year-olds (N = 120) with 5 ToM tasks, including diverse desires, diverse beliefs, knowledge access, and false belief, as well as a vocabulary task. In Study 2, we tested 5-year-olds (N = 30) with a picture-choice version of these ToM tasks. Both studies supported our hypothesis by revealing that the development of ToM in these bicultural children followed the pattern of the dominant culture. Additionally, we found that 5-year-old bicultural children are still developing false belief, and their verbal ability correlated with their ToM.

• 비교문화연구
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• 제24권
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• pp.170-183
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• 2011

This study explored how a Chinese college student who previously had not reached a threshold level of Korean proficiency used L1 (Chinese) and L2 (English) as a tool to socialize into Korean (L3) culture of learning over the course of study. From a perspective of language socialization, this study examined the cross-linguistic influence of L1 and L2 on the L3 acquisition process by tracing an approach to language learning and practices taken by the Chinese student as a case study. Data were collected through three methods; interview protocols, various types of written texts, and observations. The results showed that the student used English as a means to negotiate difficulties and expertise by empowering her L2 exposure during the classroom practices. Her ways of using L2 in oral practices could be characterized as the 'Inverse U-shape' pattern, under which she increased L2 exposure at the early stage of the study and shifted the intermediate language to L3 at the later stage of the study. When it comes to the language use in written practices, the sequence of "L2-L1-L3" use gradually changed to the "L2-L3" sequence over time, signifying the importance of interaction between L2 and L3. However, the use of her native language (L1) in a Korean-speaking classroom was limited to a certain aspect of literacy practices (i.e., vocabulary learning or translation). This study argues for L2 communication channel in cross-cultural classrooms as a key factor to determine sustainable learning growth.

• 디지털융복합연구
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• 제12권4호
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• pp.21-32
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• 2014

최근 몇 년에 걸쳐 우리나라 스마트폰 사용자가 급격히 늘어났다. 이들 중에서 영어 학습에 스마트폰을 이용하고자 하는 사람들이 많아졌다. 이에 본 연구에서는 우리나라 성인 영어 학습자 100명을 대상으로 스마트폰 사용 관련하여 활용 정도, 영향 요인에 대해 조사를 하였다. 그리고 이 일반 성인 영어 학습자 집단과 비교될 수 있는 집단으로 스마트캠퍼스 환경에서 스마트폰으로 영어를 학습할 수 있는 사이버대학교 재학생 62명의 응답을 비교 분석하였다. 분석 결과 두 집단 모두 스마트폰 사용을 긍정적으로 보면서 많이 사용하고 있었고, 계속 사용할 의도를 갖고 있었다. 영어 학습 관련하여 이들은 스마트폰을 이용해서 영어를 배울 의사가 많았고, 30분 이내의 짧은 시간 동안 학습하는 콘텐츠를 선호하였다. 학습하고자 하는 영어 콘텐츠로는 듣기와 읽기처럼 수용적 기술(receptive skill)과 발음과 어휘 등 짧은 단위로 학습할 수 있는 콘텐츠를 선호하였다. 그런데, 두 집단 모두 실제 영어 학습 관련하여 스마트폰에 설치한 영어 학습 앱은 많지 않았고 만족하는 앱도 많지 않았다. 스마트캠퍼스 환경에 있는 사이버대 재학생들도 스마트폰 사용과 관련하여 전반적으로 일반 영어 학습자 집단과 비슷한 응답을 보였으나, 스마트폰을 이용한 영어 학습에 대해서는 다소 유보적인 태도를 보였다. 이는 스마트캠퍼스를 구축하여 스마트러닝을 통한 학습 성과를 얻고자 하는 교육기관의 목적이 아직 제대로 달성되지 못한 상황을 보여주는 것이다.

• 제어로봇시스템학회:학술대회논문집
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• 제어로봇시스템학회 2004년도 ICCAS
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• pp.1291-1295
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• 2004

This paper proposed a new approach for endpoint detection of isolated speech, which proves to significantly improve the endpoint detection performance. The proposed algorithm relies on the root mean square energy (rms energy), zero crossing rate and spectral characteristics of the speech signal where the Euclidean distance measure is adopted using cepstral coefficients to accurately detect the endpoint of isolated speech. The algorithm offers better performance than traditional energy-based algorithm. The vocabulary for the experiment includes English digit from one to nine. These experimental results were conducted by 360 utterances from a male speaker. Experimental results show that the accuracy of the algorithm is quite acceptable. Moreover, the computation overload of this algorithm is low since the cepstral coefficients parameters will be used in feature extraction later of speech recognition procedure.

• 한국음향학회:학술대회논문집
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• 한국음향학회 2000년도 하계학술발표대회 논문집 제19권 1호
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• pp.99-102
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• 2000

In the case of making large vocabulary speech recognition system, it is better to use the segment than the syllable or the word as the recognition unit. In this paper, we study on the basis of making biphone for Korean speech recognition. For experiments, we use the speech toolkit of OGI in U.S.A. The result shows that the recognition rate of the case in which the diphthong is established as a single unit is superior to that of the case in which the diphthong Is established as two units, i.e. a glide plus a vowel. And also, the recognition rate of the case in which the biphone is used as the recognition unit is better than that of the case in which the mono-phoneme is used.

• 한국정보과학회 언어공학연구회:학술대회논문집(한글 및 한국어 정보처리)
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• 한국정보과학회언어공학연구회 2009년도 제21회 한글 및 한국어 정보처리 학술대회
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• pp.247-250
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• 2009

본 실험에서는 단어회상이 영어어휘 학습에 미치는 영향을 살펴보기 위해 160개 단어 쌍에 대해 어휘학습을 실시하였다. 세 종류의 어휘 학습 방법(교대학습, 반복검사, 반복학습)을 채택하여 학습을 실시하였으며 학습 1주일 후 160개 단어 쌍에 대해 지연회상검사를 실행하였다. 그 결과 세 종류의 어휘 학습 방법 중 단어회상을 강조한 두 개의 어휘 학습 방법에서 그렇지 않은 조건에 비해 유의미하게 좋은 지연회상률을 보였다. 또한 실험 참가자를 대상으로 선호하는 학습 방법에 대해 설문조사를 실시한 결과 63.5%의 설문 응답자가 한 번 학습한 것에 대해 스스로 시행하는 회상 검사를 선호하였다. 그러나 자가검증을 통한 회상 검사 자체가 효과적인 학습 방법이라고는 생각하지 않는 것으로 나타났다.

• 음성과학
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• 제10권1호
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• pp.131-141
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• 2003

Recently, researchers have been debating whether Korean children exhibit a verb bias or not. Since verbs are perceptually and structurally more salient in Korean language, it has been questioned whether these differences in the Korean make a difference in the pattern of noun and verb acquisition of Korean children. Although language structures may vary between Korean and English, universal cognitive constraints play an important role in early vocabulary acquisition. Several recent studies have examined the noun and verb acquisition of Korean children. However, their conclusions regarding the noun versus verb bias have still been inconclusive. In this paper, previous studies investigating Korean children's noun versus verb bias are examined. Methodological issues are mentioned and results were reinterpreted as favoring the noun bias for one-year-old Korean children.

• 한국음향학회:학술대회논문집
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• 한국음향학회 2000년도 학술발표대회 논문집 제19권 2호
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• pp.45-48
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• 2000

In the case of making large vocabulary speech recognition system, it is better to use the segment than the syllable or the word as the recognition unit. In this paper, we study on the basis of making mono-phone for Korean speech recognition. For experiments, we use the speech toolkit of OGI in U.S.A. The result shows that the recognition rate of :he case in which the diphthong is established as a single unit is superior to that of the case in which the diphthong is established as two units, i.e. a glide plus a vowel. And also, the recognition rate by the number of consonants is a little different.