• Title/Summary/Keyword: 한국어수준

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Automatic speech recognition using acoustic doppler signal (초음파 도플러를 이용한 음성 인식)

  • Lee, Ki-Seung
    • The Journal of the Acoustical Society of Korea
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    • v.35 no.1
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    • pp.74-82
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    • 2016
  • In this paper, a new automatic speech recognition (ASR) was proposed where ultrasonic doppler signals were used, instead of conventional speech signals. The proposed method has the advantages over the conventional speech/non-speech-based ASR including robustness against acoustic noises and user comfortability associated with usage of the non-contact sensor. In the method proposed herein, 40 kHz ultrasonic signal was radiated toward to the mouth and the reflected ultrasonic signals were then received. Frequency shift caused by the doppler effects was used to implement ASR. The proposed method employed multi-channel ultrasonic signals acquired from the various locations, which is different from the previous method where single channel ultrasonic signal was employed. The PCA(Principal Component Analysis) coefficients were used as the features of ASR in which hidden markov model (HMM) with left-right model was adopted. To verify the feasibility of the proposed ASR, the speech recognition experiment was carried out the 60 Korean isolated words obtained from the six speakers. Moreover, the experiment results showed that the overall word recognition rates were comparable with the conventional speech-based ASR methods and the performance of the proposed method was superior to the conventional signal channel ASR method. Especially, the average recognition rate of 90 % was maintained under the noise environments.

An Analysis of Korean Dependency Relation by Homograph Disambiguation (동형이의어 분별에 의한 한국어 의존관계 분석)

  • Kim, Hong-Soon;Ock, Cheol-Young
    • KIPS Transactions on Software and Data Engineering
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    • v.3 no.6
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    • pp.219-230
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    • 2014
  • An analysis of dependency relation is a job that determines the governor and the dependent between words in sentence. The dependency relation of predicate is established by patterns and selectional restriction of subcategorization of the predicate. This paper proposes a method of analysis of Korean dependency relation using homograph predicate disambiguated in morphology analysis phase. The disambiguated homograph predicates has each different pattern. Especially reusing a stage transition training dictionary used during tagging POS and homograph, we propose a method of fixing the dependency relation of {noun+postposition, predicate}, and we analyze the accuracy and an effect of homograph for analysis of dependency relation. We used the Sejong Phrase Structured Corpus for experiment. We transformed the phrase structured corpus to dependency relation structure and tagged homograph. From the experiment, the accuracy of dependency relation by disambiguating homograph is 80.38%, the accuracy is increased by 0.42% compared with one of undisambiguated homograph. The Z-values in statistical hypothesis testing with significance level 1% is ${\mid}Z{\mid}=4.63{\geq}z_{0.01}=2.33$. So we can conclude that the homograph affects on analysis of dependency relation, and the stage transition training dictionary used in tagging POS and homograph affects 7.14% on the accuracy of dependency relation.

Training Effect on the Perception and Production of English Grapheme by Korean Learners of English (한국 학생들의 영어 철자 인지와 발화에 대한 훈련효과)

  • Cho, Mi-Hui
    • The Journal of the Korea Contents Association
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    • v.19 no.11
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    • pp.226-233
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    • 2019
  • Given that English grapheme is realized as five different American English vowels [ʌ, ju, ʊ, u, ə], the purpose of the current study is to examine Korean learners' perception and production of English grapheme and training effect on words with . Thus, the current study conducted pretest, training, and posttest for 31 Korean university students on 24 English words with . The overall results showed that the participants' perception and production accuracy was significantly improved in the posttest, thus indicating training effect on both perception and production. However, it was not the case that all five different vowels demonstrated training effect. In perception the accuracy rates of [ʌ], [ju], and [ə] were improved after training whereas those of [ʊ] and [u] were not. In production [ʌ], [ʊ], and [u] did not show training effect. These results indicate that the Korean participants had difficulty distinguishing between tense [u] and lax [ʊ] both in perception and production. In particular, the Korean participants tended to replace lax [ʊ] with tense [u] in production. This is because tense [u] is the best match to Korean [u] in acoustic measurements, so that tense [u] is easy for the Korean participants to pronounce than lax [ʊ]. Also, English [ʌ] tended to be mispronounced as [u]-quality vowels such as [u] and [ju], which is due to the spelling . The Korean participants also showed errors which insert [j] after alveolars [t, d, n, s], which runs against yod-dropping in American English. They also deleted [j] after labials and velars, which is due to the absence of orthography in the target words. Finally, pedagogical implications were discussed based on the findings of the current study.

Assessment of VARK Learning Styles in Medical School and the Influence of Gender Status, Academic Achievement (의과대학생의 VARK 학습양식과 성별, 학년, 학업성취도간의 차이분석)

  • Yoo, Hyo Hyun;Kim, Young-Jon
    • The Journal of the Korea Contents Association
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    • v.19 no.11
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    • pp.144-152
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    • 2019
  • Learning styles are the methods of gathering, processing, interpreting, organizing the information. VARK learnig inventory is instructional preference classified according to their visual(V), aural(A), read-write(R), and/or kinesthetic(K) sensory modality preferences(SMP). Learner-centered learning is emphasized, but there are few studies on VARK learning styles in Korean medical school. The purposes of this study were to assess the student' SMPs and compare those with gender, status, and academic achievement. The subjects of study were 394 students at C Medical School and Graduate School of Medicine. For the study style test, 16 questions were used in Korean version of VARK test paper© 7.0 developed by Fleming provided on the VARK website. Academic achievement was converted into a standardized score(t score). Frequency analysis, cross analysis, and variance analysis(t-test, ANOVA) were conducted to identify learning style disposition and differences between groups. The uni-modal type was 87(22.1%) and the multimodal was 307(77.9%). Regardless of gender, quasi-modal VARK was the most preferred. There was no significant difference in learning styles by gender. The first grade in medicine was the lowest in uni-modal type(8.8%) and the highest in quasi-modal VARK type(47.8%), while the fourth grade was the highest in uni-modal type(30.7%) and the lowest in quasi-modal VARK type(19.8%) and tri-modal type(19.8%). There was no difference in academic achievement by all learning types(F=1.09, p=0.37). The knowledge about students' learning styles is helpful for instructors to apply more learner-centered teaching strategies in medical education.

Relationships Among Cognitive Functions, Activities of Daily Living, Participation and Quality of Life in Community-dwelling Elderly (지역사회 거주 노인의 인지기능, 일상생활활동, 참여 및 삶의 질의 관계)

  • Choi, Yoo-Im
    • Therapeutic Science for Rehabilitation
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    • v.9 no.4
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    • pp.45-54
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    • 2020
  • Objective : The purpose of this study was to identify the relationships among cognitive function, activities of daily living (ADL), participation and quality of life in community-dwelling elderly. Methods : Cognitive function, ADL, participation and quality of life were assessed in the 144 elderly people residing in the community. We used MMSE-K for measuring cognitive function, K-ADL for ADL, K-ACS for participation, and GQOL for quality of life. Results : Cognitive function was significantly correlated with social activity of participation and quality of life (physical health, psychological health, social relations and economic level). ADL was significantly correlated with participation (instrumental ADL, leisure activity) and all sub-areas of quality of life. Social activity of participation were significantly correlated with all subarea of quality of life except physical health. Among the variables, the most relevant variable was leisure activity. Conclusion : It was related to quality of life in the order of participation, ADL, and cognitive function. Among the sub-areas of participation, leisure activity was the most correlated with quality of life. This study, thus, aimed to provide basic data for successful elderly life by examining the correlation between cognitive function, daily life activity, participation and quality of life in community-dwelling elderly.

A Study on Effectiveness of Hang-Tag Type and Preferred Method of Functional Information for Outdoor Jackets (아웃도어 재킷의 기능성표기 행택 유형에 대한 소비자의 이해도 및 선호도 연구)

  • Bang, Giseong;Yoo, Shinjung
    • Science of Emotion and Sensibility
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    • v.19 no.4
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    • pp.83-94
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    • 2016
  • The aim of this study was to investigate effective expression method of performance information of functional clothing and preferred alternatives for the categorized consumer groups according to the perception about the functional outdoor jacket. 472 males and females in their 20s-60s' were surveyed and their answers were analysed and categorized by using SPSS 21.0 statistical program. For the study, four different expression methods for waterproof & breathable fabric, 'illustration only', 'illustration+Korean text', 'illustration+foreign text', and 'chart with Korean text', were presented and asked for finding correct answers. The analysis was done for three categorized consumer groups from the former study, 'unconversant/brand & design pursuing group', 'conversant/function pursuing group' and 'high price/high function preferring group'. The results showed that regardless of groups, 'picture only' was the most preferred method and 'graph' was the least. However, the percentage of correct answers for the 'graph' was the biggest, especially for 'conversant/function pursuing group'. It implied that the effective expression method should be differentiated depending on the target consumer groups. 'Conversant/function pursuing group' more agreed on the need for additional information, such as 'after-washed performance', than other two groups.

A Research on Citing Behaviors of Researchers in Mechanical Engineering (기계공학 연구자들의 인용행태 분석 : P대학 기계공학부 박사학위논문을 중심으로)

  • Chang, Duk-Hyun;Jang, Hwan-Seok
    • Journal of Information Management
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    • v.38 no.3
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    • pp.111-135
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    • 2007
  • The purpose of this study is to identify the citing behaviors of researchers in the field of mechanical engineering. It tries to verify if there is a significant difference on citing behavior of researchers between the past and the present with dissertations produced in P University as samples. For the comparison, years 1996 and 2004 are selected for the citation analysis. It analyzed four aspects, such as types of resources cited, languages used in cited documents, years since their publication of cited documents, and the journals indexed in SCI. The results of the analysis are; First, journals are the most cited than any other types of information resources. The citation of WWW resources which are gradually increasing for research is not shown in 1996, but there were some cited in 2004. Second, doctoral candidates usually cite document in English for their study. Statistics show that the use of resources in Japanese is on the decrease. Third, doctoral candidates in the discipline prefer materials published within 4-7 years, 8-11 years rather than 0-3 years since their publication. Last, journals indexed in SCI among the citation in dissertations are about 33 percent for both 1996 and 2004.

DEVELOPMENT OF THE KOREAN FORM OF LEYTON OBSESSIONAL INVENTORY-CHILD VERSION(LOI-CV) (한국판 아동용 Leyton 강박증 척도의 개발)

  • Lee, Jeong-Seop;Shin, Min-Sup;Hong, Kang-E
    • Journal of the Korean Academy of Child and Adolescent Psychiatry
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    • v.5 no.1
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    • pp.162-171
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    • 1994
  • Objects : This study was carried out to develop the Korean form of Leyton Obsessional Inventory-Child Version(LOI-CV) designed to assess the obsessive compulsive symptoms in children and adolescents. The LOI-CV was modified into a paper-and-pencil form in order to administer it to group. Methods : We applied the Korean form LOI-CV to 127 elementary, middle and high school children, and retest it to 82 children with 3 weeks interval. Together with LOI-CV, Korean form of SCL-90-R which had been proved its reliability and validity, were administered to the all subjects for examining of concurrent validity. And then we examined whether this scale discriminates between obsessive patients, psychiatric controls and normal controls in the level of obsessive symptoms. Results : Test-retest reliability, internal consistency were very satisfactory. Concurrent validity with SCL-90-R was moderate level. And obsessive patients was scored significantly higher than psychiatric and normal controls in the level of obsessive symptoms. In factor analysis, items are clustered to 5 factors. In the global obsessive symptom, obsessive scores of female elimentary school students were higher than that of male students. Conclusions : These results indicate that the Korean form of LOI-CV is reliable and valid self-rating scale to assess the obsessive-compulsive symptoms in Korean children and adolescents. Author suggests that future research is needed for Korean version standardization study in normal and clinic-refered population.

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Relationships between Parental Support and Monitoring and School Adjustment in Adolescents from Multicultural Families: Mediating Role of Ego-Resilience (부모의 지지 및 감독이 다문화 청소년의 학교생활적응에 미치는 영향: 자아탄력성의 매개효과)

  • Lim, Yangmi
    • Journal of Korean Home Economics Education Association
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    • v.31 no.3
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    • pp.41-55
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    • 2019
  • The present study examined the direct effects of parental support and monitoring on multicultural adolescents' school adjustment and the mediating role of ego-resilience in the relationships, under the condition of controlling foreign mothers' Korean language abilities. We used data from 1,325 1st grade middle school students from multicultural families, who participated in the Multicultural Adolescent Panel Survey(MAPS) administered by the National Youth Policy Institute(NYPI). Structural equation modeling analysis revealed the following: parental support and monitoring directly and positively related with multicultural adolescents' school adjustment, and the direct effect of parental support on the school adjustment of multicultural adolescents was greater than that of parental monitoring. In addition, the adolescents' ego-resilience partially mediated the relationships between parental support and monitoring, and their school adjustment. Finally, we recommended the roles of parent education and home economics education in supporting school adjustment and elevating ego-resilience in multicultural adolescents.

An Analysis of Open Source GIS Software Ecosystem in Korea (국내 오픈소스 공간정보 소프트웨어 생태계 분석)

  • Kang, Youngok;Kang, AeTti;Kwon, HoeYoon
    • Spatial Information Research
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    • v.22 no.6
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    • pp.67-79
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    • 2014
  • These days open source softwares are being introduced and applied in many countries in the world. Especially, both government and private companies tend to become an spearhead in vitalizing the open source software. In this paper we try to check the degree of vitalizations in open source GIS software and to draw implications in vitalizing ecosystem of open source GIS software. Key players of open source GIS software ecosystem are government, private companies, academic and research institutes, and nonprofit foundations. Government does not have very little policies related to the investment and the support of open source GIS software. Private companies related to the open source GIS software are very few in the number and do not have any clear business model to make a profit. Academic and research institutes are weak in using the open source GIS software, which can be an major obstacle to cultivate software developers. OSGeo Korean branch, established in 2009, is the only nonprofit foundation in Korea which makes an effort to vitalize the open source GIS software, but its results are not very strong up to now in view of both quality and invigoration. In order to vitalize the open source GIS software ecosystem, lots of efforts of key players are needed. Especially, government efforts are very important because it can provide a trigger in vitalizing the open source GIS software ecosystem. The tasks that government should propel are R&D investment, test bed projects in the area of public sector, professional manpower training, and international cooperation and marketing.


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