• The Transactions of the Korean Institute of Electrical Engineers P
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• v.65 no.3
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• pp.171-177
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• 2016

Noise problem that occurs in living environment is a big trouble in the economic, social and environmental aspects. In this paper, the filtered-X LMS algorithms, the adjoint LMS algorithms, and the robust adjoint LMS algorithms will be introduced for applications in active noise control(ANC). The filtered-X LMS algorithms is currently the most popular method for adapting a filter when the filter exits a transfer function in the error path. The adjoint LMS algorithms, that prefilter the error signals instead of divided reference signals in frequency band, is also used for adaptive filter algorithms to reduce the computational burden of multi-channel ANC systems such as the 3D space. To improve performance of the adjoint LMS ANC system, an off-line measured transfer function is connected parallel to the LMS filter. This parallel-fixed filter acts as a noise controller only when the LMS filter is abnormal condition. The superior performance of the proposed system was compared through simulation with the adjoint LMS ANC system when the adaptive filter is in normal and abnormal condition.

• Cross-Cultural Studies
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• v.46
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• pp.253-279
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• 2017

This study aims to examine how the Chinese popular culture, especially music, can contribute to diversification of the ancillary materials for teaching Chinese language, literature and culture, based on the analysis of some songs of Jay Chou. For this purpose, this study analysed 10 songs that have been used in the tests or the text contents in China or Taiwan in terms of rhyme, words relation to the ancient poems, and the Chinese culture. Consequently, the songs of Jay Chou show that they can be used as an ancillary material in the Chinese class from the linguistic, literary, and cultural angles. For use in the Chinese language, literature, culture class in the future, there is a constant need to discover and analyse new materials from the Chinese popular culture.

• Korean Linguistics
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• v.63
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• pp.103-132
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• 2014

This study compares various speech rates of Korean learners with those of native Korean. Speech data were collected from 34 native Koreans and 33 Korean learners (19 Chinese and 14 Japanese). Each participant recorded a 9 syllabled Korean sentence at three different speech rate types. A total of 603 speech samples were analyzed by speech rate types (normal, slow, and fast), native languages (Korean, Chinese, Japanese), and learners' proficiency levels (beginner, intermediate, and advanced). We found that learners' L1 background plays a role in categorizing different speech rates in the L2 (Korean), and also that the leaners' proficiency correlates with the increase of speaking rate regardless of speech rate categories. More importantly, faster speech rate values found in the advanced level of learners do not necessarily match to the native speakers' speech rate categories. This means that learning speech rate categories can be more complex than we think of proficiency or fluency. That is, speech rate categories may not be acquired automatically during the course of second language learning, and implicit or explicit exposures to various rate types are necessary for second language learners to acquire a high level of communicative skills including speech rate variation. This paper discusses several pedagogical implications in terms of teaching pronunciation to second language learners.

• Journal of Technologic Dentistry
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• v.41 no.2
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• pp.123-135
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• 2019

Purpose: This study aims to prevent Smartphone addiction and provide a basic material for intervention strategy by inquiring into the correlation between interpersonal relations competency and Smartphone addiction. Methods: This study carried out a questionnaire survey oriented to 323 people who agreed to participate in this research. For the final analysis, this study selected 298 sheets of questionnaires excluding 25 sheets with insufficient response qualities. Results: According to the results of regression analysis, significant correlation between interpersonal relations competency and Smartphone addiction level was not observed. However, according to the results of correlation analysis, the subordinate factor of Smartphone addiction "directionality of virtual world" showed a significant negative correlation with "opinion expression regarding rights or refusal" of interpersonal relations competency (p<0.05), while "withdrawal," the subordinate factor of interpersonal relations competency and Smartphone addiction displayed a negative correlation with Smartphone addiction (p<0.05). Conclusion : However, the mean of the 3DP group was within the clinical tolerance suggested by the previous researchers. Based on this, dental prosthesis fabricated by 3D printing technology is considered to be clinically acceptable.

• Journal of Technologic Dentistry
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• v.44 no.2
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• pp.47-52
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• 2022

Purpose: This study aims to identify the recognition, readiness, and awareness of the need for education in the era of the 4th industrial revolution among dental technology students in the healthcare field, and to provide essential data for the development of a future-oriented curriculum. Methods: A survey of 260 students, who were briefed about the purpose of this study, was conducted at D University and G University, located in Daejeon and Gangwon-do, South Korea, respectively. A total of 229 questionnaires, excluding 31 with insufficient responses, were analyzed. Results: 1. Recognition of the 4th industrial revolution was 3.43±0.77, preparedness was 2.91±0.84, and awareness of the need for education was 3.86±0.80. 2. Major satisfaction was found to have a significant effect on concept recognition and impact recognition of the 4th industrial revolution, readiness level, and the need for education (p<0.001). Conclusion: It is necessary to develop an education program on specialized skills (professional knowledge) related to the 4th industrial revolution, and to implement such a program that serves the educational needs of individual groups.

• Annual Conference on Human and Language Technology
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• 2019.10a
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• pp.339-342
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• 2019

본 논문에서는 소프트웨어 정의 네트워크를 이용한 한중일 한자-한국어 변환 키워드 도메인 이름 시스템을 제안하였다. 한자 체계를 주로 사용하는 한국, 중국, 일본에서 세 나라의 한자 수량이 너무 많기 때문에 우선 한국, 중국, 일본이 공용으로 사용하는 한자 체계인 CJK808을 가지고 연구하였다. 연구를 통해 CJK808 한자 체계에서 각 나라의 한자 특징도 많이 발견하였고, 그 중에서 표준자와 이체자의 다양성이 더욱 두드러졌다. SDN을 이용함으로써 관리 측면에서 다양한 이점을 얻을 수 있다. 제안하는 시스템을 통하여 사용자들은 한국, 중국, 일본 한자를 입력하면 SDN에서 관리하는 도메인 네임 서버를 통해 IP 주소를 얻을 수 있다.

• Journal of Korean Library and Information Science Society
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• v.55 no.3
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• pp.65-86
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• 2024

As a preliminary study for the basic plan for the construction of the Buyeo Public Library, this study conducted a survey on Buyeo-gun residents' perception of the operation of Buyeo Public Library facilities and spaces, books, services and programs, and library characteristics. As a result, it was found that the survey subjects recognized the overall natural atmosphere of Buyeo Public Library facilities and spaces, and the convenience of using comfortable and pleasant data reading spaces and data. In addition, it was found that the preferred type of information source as the direction of book operation was print data, and the subject aspect was the highest preference for the literary field, and it was found that they wished to provide book and knowledge information in various fields.

• The Journal of the Korea Contents Association
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• v.16 no.1
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• pp.121-128
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• 2016

Under the Bazinian influences, Eric Rohmer tried all his life to show the world as it was by taking full advantage of objective and revelatory nature of a camera. Believing the cinema was an instrument of discovery, that was able to reflect pre-existing beauty of nature, he wrote dialogues using actual words of actors and captured human actions as close to real life as possible. As a result, audience could meet lively, barely fictional characters and their ordinary, yet exciting adventures of daily lives. Focusing on , the third of his 'Six moral tales', this study attempts to discuss the matters of choice, chance and morality, and briefly his status as a writer in the history of narrative literature.

• Journal of The Korean Association For Science Education
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• v.23 no.1
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• pp.75-85
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• 2003

We have developed of a criterion that would help to select and develop performance assessments in science education. There are six categories of a criterion: Fidelity, satisfaction, content validity, fairness & suitability, reliability & objectivity, and usability. There are the total of 25 sub-categories under the six categories. Five science educators evaluated the validity of the criterion. For reliability of the criterion, Kendall's tau-b was used. Eight science educators and elementary teachers evaluated three performance assessment tasks for the correspondence of the criterion. This study also discuss the implications of this criterion as well.

• Journal of Digital Convergence
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• v.16 no.1
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• pp.343-350
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• 2018

The purpose of this paper is to explore the characteristics of a digital culture, its negative effects, especially automatism of perception, a poetic strategy against automatism of perception and the utility of poetry including the therapeutic function of poetry. The new technologies offer us various experience, great opportunities and rosy future by freeing us from boring and laborious tasks, and difficult decisions. Through the excessive and habitual use of new technologies, we may become too dependent on machines, losing our thinking abilities, sensibility, perception and creativity. Therefore, we need poetry to recover the sensation of life and make us feel things. Reading poetry allows us to look into someone else's soul and cultivate the ability to empathize. As a healing fountain, poetry leads us to a way for a change of heart, a recovery of psychic health and universal love through perfect communion in ourselves and in society. Furthermore we need a systematic and in-depth study of digital poetry as well as traditional poetry.