• The Journal of the Acoustical Society of Korea
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• v.35 no.1
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• pp.42-48
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• 2016

Since a variety of sound occur in same place and similar sound occurs in other places, the performance of acoustic scene classification is not guaranteed in case of insufficient training data. A Bag of Words (BOW) based histogram feature is foreseen as a method to overcome the problem. However, since the histogram features is made by using a feature distribution, the ordering of sequence of features is ignored. A temporal information such as periodicity and stationarity are also important for acoustic scene classification. In this paper, temporal features about a periodicity and a stationarity are extracted by using a recurrent quantification analysis. In the experiment, performance of the proposed method is shown better than other baseline methods.

• Journal of The Korean Association of Information Education
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• v.8 no.2
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• pp.227-238
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• 2004

While the first step of the comprehensive plan for educational informationization focused on the infrastructure establishment, the second step aims to develop creativity and problem solving skills of students through the use of Information and Communication Technology(ICT). The purpose of this research is to investigate the current status of the educational use of ICT in elementary schools, and to give guidelines for future educational informationization. Four aspects of ICT(i.e., school environments, teachers' abilities to use ICT, methods for using ICT in class, and factors hindering the use of ICT in schools) were examined in the survey. From the survey, it is found that ICT is now used in schools more actively than before. However, it is also found that more efforts need to be made in some areas such as instructional strategies using ICT in class, and the design and the management of teacher training programs.

• Journal of Korea Multimedia Society
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• v.13 no.10
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• pp.1494-1505
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• 2010

A variety of sounds take place in medium and small-sized manufactories producing many kinds of parts in a small quantity with one press. We developed the identification system for the quality of parts using HTM(Hierarchical Temporal Memory)-based sound recognition. HTM is the theory that the operation principle of human brain's neocortex is applied to computer, suggested by Jeff Hopkins. This theory memorizes temporal and spatial patterns hierarchically about the real world, which is known for its cognitive power superior to the previous recognition technologies in many cases. By applying the HTM model to the sound recognition, we developed the identification system for the quality of molding parts. In order to verify its performance we recorded the various sounds at the moment of producing parts in the real factory, constructed the HTM network of sound, and then identified the quality of parts by repeating learning and training. It reveals that this system gets an excellent and accurate results at the noisy factory.

• Transactions of the Korean Society of Mechanical Engineers A
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• v.25 no.5
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• pp.788-796
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• 2001

VR(Virtual reality) technologies have given engineers the ability to design, test, and evaluate engineering systems in a virtual environment. The virtual plant is the highlight of the application of the VR technology to plant engineering. Plant design, maintenance, control, management, operation are integrated in the virtual plant. The VR monitoring system including the concept of the virtual plant is developed to replace a current control room that has number of gages and warning lamps in two-dimensional panels which shows the operating status of a plant. The operating status of the plant is displayed in the VR monitoring system through the realistic computer graphics. Sophisticated, realistic and prompt control becomes possible. The VR monitoring system consists of advanced visualization, walk-through simulation and navigation. In the virtual environment, a user can navigate and interact with each component of a plant. In addition, the user can access the information by just clicking interesting component. The VR monitoring system is operated with various modules, such as (1) virtual plant constructed with Graphic Management System (GMS), (2) Touch & Tell System, and (3) Equipment DB System of Part. In order to confirm the usefulness of the VR monitoring system, a pilot gas plant which is currently being used for plant operator training is taken as application. The end of the paper gives an outlook on the future work and a brief conclusion.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.6 no.2
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• pp.195-201
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• 2005

This paper describes preliminary results we have obtained in developing a computer vision system based on active IR illumination for real time gaze tracking for interactive graphic display. Unlike most of the existing gaze tracking techniques, which often require assuming a static head to work well and require a cumbersome calibration process for each person, our gaze tracker can perform robust and accurate gaze estimation without calibration and under rather significant head movement. This is made possible by a new gaze calibration procedure that identifies the mapping from pupil parameters to screen coordinates using the Generalized Regression Neural Networks (GRNN). With GRNN, the mapping does not have to be an analytical function and head movement is explicitly accounted for by the gaze mapping function. Furthermore, the mapping function can generalize to other individuals not used in the training. The effectiveness of our gaze tracker is demonstrated by preliminary experiments that involve gaze-contingent interactive graphic display.

• Archives of design research
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• v.14
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• pp.193-207
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• 1996

Until recently, ind ustrial designers designed the product packaging of Eletronic Media, and userInterface designers focused primarily on software design, But as computer related technology continues to evolve, this distinction has become ambiguous, As a natural consequence of these trends, industrial designers are getting more involved in user-interface design to develop interactive objects, Moreover, In the future, the whole Information of a product whIch means product packaging, marketing, training matenals, support as weIl as hardware and software will be regarded as a product, and user's entIre expenences including the material elements of product will be taken for the factors of user interface to expand the category of user interface design. The importance of interface design and its applications within industrial design has been stressed in the recent years, However researches on practical process in interface design developments have been rarely established. This paper aims to develop the interaction design process for the useful user-interface design by theoretical study and actual analysis of user-interface design.

• Journal of the Korean Society of Clothing and Textiles
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• v.40 no.1
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• pp.188-201
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• 2016

A Clothing Department is a major fields of specialized vocational high schools. Specialized high schools with clothing related departments are located in Seoul (4 schools), Busan (2), Incheon (3), Daejeon (1), Ulsan (1), Kangwondo (1), Kyungkido (1), Kyungsangbukdo (1) and Chungcheongbukdo (1). In these 15 specialized high schools, 92 classes of clothing departments are run by 72 clothing teachers with 2,459 students enrolled. The range of object of this study is 15 clothing related departments of specialized high schools and their titles are department of Fashion Design, Clothing Design, Clothing Art, Multi Fashion Design, Fashion Textile Design, and Global Design. They were investigated by literature from previous research and education statistics from the Korean Educational Development Institute (KEDI). Websites such as 'School Information', 'portal site of Specialized High School', 'Ministry of Education-Education Statistics and Information' were also searched. The homepages of specialized high schools with clothing department were also investigated respectively. In this study, current scale, employment rate of graduates, major courses, scale of teachers of clothing major of clothing department of specialized high school were analyzed. In 2015, employment rate and college enrollment rate of vocational high schools were 46.6% and 36.6% respectively, whereas employment rate and college enrollment rate of clothing departments four specialized High Schools were 39.9% and 45.8% respectively. The number of major courses of clothing departments are 12-15, and the main subjects of the curriculum were Fashion Design, Construction of Western Clothing, Construction of Korean Clothing, Textile Materials and Mangement and Computer Graphics. Major courses consist of 90-108 weekly lesson-hours for 6 semesters. Thanks to government projects to encourage specialized high schools, the educational environment has improved in areas of practice room equipment, industry connections, field training, internship, and scholarship funds. However, despite government projects to encourage education at specialized high schools, there is a need for a more flexible education system to enhance student creativity at specialized high schools.

• Journal of KIISE:Computing Practices and Letters
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• v.7 no.6
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• pp.593-601
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• 2001

This paper presents an efficient system for power system education using 3-D computer graphics animation in the PC environment. Several power system phenomena are simulated using Real-Time Digital Simulator. Results are transmitted through on-line communication line to PC for graphic animation, and simulated in the 3-D graphics animation. It can immediately reflect user control input and re-simulated this result. The proposed method was tested on both the sub-synchronous resonance phenomena and multi-bus system. It is expected that the proposed method would be helpful for the operator training as well as power system education.

• Journal of Korean society of Dental Hygiene
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• v.14 no.4
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• pp.453-462
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• 2014

Objectives : The purpose of the study is to investigate the education, certification system, and extent of duty of dental hygienist between Korea and five developed countries including United States, Canada, England, Australia, and Japan. Methods : Internet based access to five developed countries was made and the analysis was done for the definition of occupation, main duties, similar occupations, education policy, job descriptions, license certification system, standards of duty, Q & A management, current status of obtaining certification, and scope of work. Results : United States has a two-year associate degree(AS) and a four-year bachelor degree(BS). Canada has two to three years degree and a two-year course is accepted in england and Australia. In the meanwhile, Korea and Japan have two-year and four-year educational courses. The duty of dental hygienists includes the prevention education for dental health and continuing dental health care. Most of the dental hygienists in Korea and Japan play the assistant roles for the dental surgeons. United States has national board examinations including written examinations, practical examinations, and computer assisted examination. Written and practical examinations are also conducted in Korea. England and Australia have the recognized educational organizations for qualification. Conclusions : Problem based and problem solving skills are the most important in dental hygienist education in Korea. The training of highly competent dental hygienists must be done for the improvement of dental hygiene in Korea in the near future.

• Journal of Internet Computing and Services
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• v.20 no.6
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• pp.167-177
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• 2019

The enhancement of national competitiveness in future society is the discovery and training of excellent SW convergence gifted. In order to cultivate these SW convergence gifted, reinforcing competence of teachers in charge should be made first. Therefore, in this paper, artificial intelligence education contents, one of the core technologies of the 4th Industrial Revolution era, were developed to reinforcing competence of SW convergence gifted teachers. After setting the direction of artificial intelligence education content, we constructed educational content suitable for secondary SW convergence gifted education, and designed and developed it in detail. The composition of artificial intelligence education content consists of machine learning and tensor flow understanding, linear regression machine learning implementation for numerical prediction, and multiple linear regression-based price prediction machine learning implementations. The developed educational contents were verified by experts with qualitative aspects. In the future, we expect that the educational content of artificial intelligence proposed in this paper will be useful for strengthening the ability of SW convergence gifted teachers.