• Proceedings of the Korean Society of Computer Information Conference
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• 2022.07a
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• pp.531-534
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• 2022

최근 국악계가 지향하는 국악의 발전 방향은 국악의 대중화 및 현대화에 초점이 맞춰져있다. 이에 국악인들은 창작 국악, 크로스 오버 국악 등의 새로운 국악을 연주하는 공연을 진행해오고 있으나 타 분야의 기술 융합을 통한 국악 관련 콘텐츠 개발의 측면에서 제작된 디지털 콘텐츠들은 두각을 드러내지 못했다. 다수의 선행연구에서는 국악 소재 디지털 콘텐츠에 관한 학술적 연구가 미미하다고 언급하며 이에 대한 연구의 필요성을 강조했다. 이에 따라 본 연구는 국악 소재 디지털 콘텐츠의 특징에 관한 사례연구를 진행했다. 사례조사 범위는 국내 스마트폰 보급이 본격화 된 2009년부터 2022년까지로 설정하여 해당 자료를 수집했다. 본 연구의 분석기준은 사례를 크게 콘텐츠의 기능적 측면과 내용적 측면으로 나누어 국악과의 연계성을 분석하는 데에 집중했다. 연구 결과 팬데믹으로 인한 언택트 형태의 온라인 국악 교육 콘텐츠가 주를 이루었고, 정보 콘텐츠와 교육 콘텐츠의 사례가 모두 이에 해당했다. 공연 콘텐츠는 LED 기술을 사용한 의상을 입은 퍼포먼스형 공연의 형태와 3D 미디어 아트가 주가 되는 음악회의 형태가 있고, 오락 콘텐츠는 리듬 게임과 스토리텔링형 게임으로 나눌 수 있었다. 본 연구는 선행연구에서 언급한 국악 콘텐츠 연구의 한계점을 해소하고자 수집한 자료를 본 연구의 분석 기준에 적용하여 특징을 도출하는 데에 그치지 않고 더 나아가 향후 국악 소재 디지털 콘텐츠가 개발되어야 할 방향을 제안했다는 점에서 연구의 의의를 지닌다. 또한 사례의 연도별 추이를 파악하였으므로 국악을 소재로 한 콘텐츠 제작 사례에 관한 연구를 진행하는 향후 연구자들에게 기초자료로서 도움이 될 것으로 사료된다.

• Proceedings of the Acoustical Society of Korea Conference
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• 1985.10a
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• pp.68-71
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• 1985

In this paper, Sentence-Sip E Il Ka Gi Seo U1 E Gan Da was spoken by 4 men and 3 see sound is used for the experiment. A/D conversion time is 30 sec. Data are obtained using the microcomputer and compressed by ADPCM Rate of compression is 1/8. Data compressed by ADPCM are synthesized and compared to the original sound. Rate of speech identification is analysed using the sound pressure, white noise. Coding of ADPCM is done for 5bit. As the result of fixing starting voltage by 2.6V. It is acertained that variable value increases in initial speech signal and then process is made by minimum value "3". From the result of processing, synthesized sound is almost eaual to original sound. Minimum values cause distorition, Dummy Head System is used in this experiment.xperiment.

• Korean Management Science Review
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• v.29 no.1
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• pp.101-114
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• 2012

The demand for naval spare parts is intermittent and erratic. This feature, referred to as non-normal demand, makes forecasting difficult. Hierarchical forecasting using an aggregated time series can be more reliable to predict non-normal demand than direct forecasting. In practice the performance of hierarchical forecasting is not always superior to direct forecasting. The relative performance of the alternative forecasting methods depends on the demand features. This paper analyses the influence of the demand features on the performance of the alternative forecasting methods that use hierarchical and direct forecasting. Among various demand features variability, kurtosis, skewness and equipment groups are shown to significantly influence on the performance of the alternative forecasting methods.

• Proceedings of the Korea Contents Association Conference
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• 2014.11a
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• pp.313-314
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• 2014

본 연구는 유튜브 조회수 20억뷰를 돌파하고 기네스북에 오른 강남스타일 뮤직비디오의 시각적 몰입감에 대한 분석을 통해 이를 극대화하는 전략을 찾고자 한다. 분석 결과 뮤직비디오는 댄스 및 퍼포먼스, 출연자와 스타일, 장소 배경 등의 콘셉트가 일관성이 있고 창의적일수록, 주요인물의 등장순서와 배치, 비주얼의 양적 질적 변화, 청각 중심이 시각에 일치되어 기승전결이 고조될수록 시각적 몰입감이 극대화되었다. 향후 제 2, 제 3의 강남스타일 등 한류(韓流)와 유튜브 진출을 목적으로 하는 뮤직비디오 제작을 위해서는 창의적 '시각적 콘셉트'를 발굴하고, 검증된 '시각적 기승전결'을 강화하여 시각적 몰입감을 극대화하는 전략이 필요하다.

• Journal of Internet Computing and Services
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• v.9 no.4
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• pp.69-77
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• 2008

I propose adding users’Media Access Control (MAC) addresses to standard X.509 certificates to provide more secure authentication. The MAC address can be added by the issuing Certification Authority (CA) to the "extensions" section of the X.509 certificate. I demonstrate that when two users with MAC address information on their digital certificates communicate, the MAC address on the first user’s certificate can be easily verified by the second user. In this way, security can be improved without markedly degrading system performance and the level of initial trust between participants in virtual communities will be improved.

• Korean Institute of Interior Design Journal
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• no.30
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• pp.28-34
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• 2002

We need to think that space is not static but dynamic because it becomes wide and narrow, newly appears and disappears by human's behavior. Generally such movement in a space is a thing of feeling and dynamic about movement. But it is extending the experience of the subject by scientific technique's development and anticipation about the feature. The practical movement is actively introduced into architecture and interior design scope and occurs a trial about this movement. By using four elements -a form, hue, movement, light- kineticism becomes visual arts united with art and science. It recovers the art's sociality and arises participation of spectators. In the environment and art field kineticism is not simple ostentation but a current trial for human's mind and sensitivility. Kineticism is four-dimensional space considered by human's experience and is related to an observer, or experiential subject of space. Now the space except human's mind feature re-illuminates kineticism, that is, the field of the formative arts in the early part of the 20th century and gets to be 'the consensus space'.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.40 no.8
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• pp.703-710
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• 2016

In robotics research, accurate estimation of current robot position is important to achieve motion control of a robot. In this research, we focus on a sensor fusion method to provide improved position estimation for a wheeled mobile robot, considering two different sensor measurements. In this case, we fuse camera-based vision and encode-based odometry data using Kalman filter techniques to improve the position estimation of the robot. An external camera-based vision system provides global position coordinates (x, y) for the mobile robot in an indoor environment. An internal encoder-based odometry provides linear and angular velocities of the robot. We then use the position data estimated by the Kalman filter as inputs to the motion controller, which significantly improves performance of the motion controller. Finally, we experimentally verify the performance of the proposed sensor fused position estimation and motion controller using an actual mobile robot system. In our experiments, we also compare the Kalman filter-based sensor fused estimation with two different single sensor-based estimations (vision-based and odometry-based).

• Journal of Korea Entertainment Industry Association
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• v.14 no.3
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• pp.267-275
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• 2020

Even ordinary-looking plays can have a profound meaning. Based on this assumption, Eugene Pink (1960) has established an analytical model of play with five elements, namely "delight", "meaning", "community", "rules" and "tools." It was an effort to reflect on the true meaning of play beyond the cortical entertaining nature of play. In this study, it was carried out that all the texts containing images and performance from the EBS character "Pengsu" were selected, since he emerged as a new star in 2019. And also his play structure was analyzed by applying the Pink's model. As a result, Pengsu's play structure was confirmed to be systematic and complete as a play prototype because it was well-organized with five elements of play. It was regarded as a successful character that skillfully attracts participants to the play world. Among the components of the play, "fun" was found to be his funny appearance, sudden and unconventional behavior, "meaning" was the elimination of authoritarianism, self-esteeming and energizing, "community" was a multi-platform media user who crossed off-on-line, analog-digital-line, "rules" was to set his concept fixed as a young stranger with an ego to unreveal his identity, and "tools" was shown as his character itself and continual discourse. It shows that until now, Pengsu has a social net function of quite spreading the positive meaning of encouragement and comfort, advice and guide, consideration and forgiveness, introspection and nirvana to all members of our society, including the youth who are struggling with uncertainty and anxiety by showing rather exaggerated and stimulating performance that precisely combines these play elements.

• Archives of design research
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• v.17 no.2
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• pp.77-86
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• 2004

User-Centered Design Approach plays important role in dealing with usability issues for developing modern technology products. Yet it is still questionable whether the User-Centered approach is enough for the development of successful consumer contents since the User-Centered Design is originated from the software engineering field where meeting customers' functional requirement is the most critical aspect in developing a software. However, modern consumer market is already saturated and in order to meet ever increasing consumer requirements, the User-Centered Design approach needs to be expanded. As a way of incorporating the User-Centered Approach into the consumer product development, Jordan suggested the 'Pleasure-based Approach' in industrial design field, which usually generates multi-dimensional user requirements: 1)physical, 2)cognitive, 3)identity and 4) social. It is the current tendency that many portal and community service providers focus on fulfilling both functional and emotional needs for users when developing new items, contents and services. Previously fulfilling consumers' emotional needs solely depend on visual designer's graphical sense and capability. However, taking the customer-centered approach on withdrawing consumers' unknown needs is getting critical in the competitive market environment. This paper reviews different types of user research techniques and categorized into 6 ways based on Kano(1992)'s product quality model. Based on his theory, only performance factors, such as suability, can be identified through the user-centered design approach. The user-centered design approach has to be expanded to include factors include personality, sociability, pleasure, and so on. In order to identify performance as well as excellent factors through user research, a user-research framework was established and tested through the case study, which is ' the development of new online service for teens '. The results of the user research were summarized at the end of the paper and the pros and cons of each research techniques were analyzed.

• Journal of the Korean School Mathematics Society
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• v.20 no.3
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• pp.303-323
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• 2017

This is a multiple-case study of how preservice secondary mathematics teachers teach a particular mathematics using a technological tool. In a performance interview, the preservice teachers demonstrated how they would teach a specific mathematical topic using Geometer's Sketchpad. The results of this study showed that the preservice teachers designed diverse types of lesson plans and implemented different pedagogical and technological techniques in their teaching demonstrations. The findings suggest that preservice teachers' pedagogical content knowledge is an important factor in the integration of technology into their mathematics teaching. Thus, mathematics teacher educators should help preservice teachers gain a robust pedagogical content knowledge in order to effectively teach mathematics with technological tools.