• Journal of Multimedia Information System
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• v.8 no.4
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• pp.243-250
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• 2021

Instructional contents are used to demonstrate a technical process to teach and walkthrough certain procedures to carry out a task. This type of informational content is widely used for teaching and lectures in form of tutorial videos and training videos. Since there are questions and uncertainties for what could be the killer application for the novel wearables, we propose a self-instruction training application on a smart glass to utilize already-available instruction videos as well as public open data in creative ways. We design and implement a prototype application to help users train by wearing smart glasses specifically designed for two concrete and hand-constrained use cases where the user's hands need to be free to operate. To increase the efficiency and feasibility of the self-instruction training, we contribute to the development of a wearable killer application by integrating a voice-based user interface using speech recognizer, public open data APIs, and timestamp-based procedural content navigation structure into our proof-of-concept application.

• Journal of Broadcast Engineering
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• v.27 no.7
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• pp.985-998
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• 2022

Even after the standardization of VVC completed in 2020, continuing efforts for developing even better video coding technology are still under way. In this context, the Joint Video Experts Group (JVET) is developing various video compression technologies under the name of enhanced compression beyond VVC capability which has reported BDBR gain of -6.75%, -14.05%, and -15.25% on its test model, ECM version 5.0, respectively in Y, Cb, and Cr channels by just having a few new or improved intra coding tools. The current activity has so far adopted 11 intra coding tools beyond VVC which can generate more sophisticated predictors, reduce signaling overhead, or combine various predictors. In this tutorial paper, we will review these techniques.

• Proceedings of the Korean Society of Broadcast Engineers Conference
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• fall
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• pp.54-56
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• 2021

본 연구는 교육용 가상현실 게임 튜토리얼 인터페이스 구성 요소와 고려사항을 파악하여 튜토리얼 인터페이스를 디자인하는 것을 목적으로 한다. 현재 개발 중인 가상현실 교육용 게임 콘텐츠를 기반으로 튜토리얼이 제공되어야 하는 사용자 과업을 도출하였다. 그 후 상용화된 가상현실 게임을 직접 사용해 봄으로써 가상현실 게임 튜토리얼의 구성 요소를 파악하였다. 대부분의 가상현실 게임 튜토리얼은 텍스트 형태의 게임 방식과 컨트롤러 그림 기반의 인터페이스 설명으로 구성되어 있었다. 문헌조사를 통해 가상현실 게임에서 튜토리얼 인터페이스 설계 시 고려되어야 하는 디자인 요소를 분석하였고, 중앙으로부터 콘텐츠를 편안하게 볼 수 있는 범위는 좌우 약 -77도 ~ 77도에 위치되어야 함을 확인하였다. 또한, 텍스트, 버튼, 색상 요소에 관한 가상현실 인터페이스 디자인 원칙도 함께 수집하여 정리함으로써, 최종적으로 사용자 과업에 따른 가상현실 게임 튜토리얼 인터페이스를 디자인하였다. 본 연구는 추후 가상현실 게임 튜토리얼 인터페이스 제작 시 유용할 것으로 기대된다.

• Geophysics and Geophysical Exploration
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• v.23 no.4
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• pp.243-252
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• 2020

To share an understanding of trajectory measurement in surveys using borehole, this tutorial summarizes the relevant mathematical principles of the borehole deviation survey based on coordinate transform. For uncased or open holes, calculations of the azimuth-deviation-tool face rotation using three-component accelerometer and magnetometer measurements are summarized. For the steel-cased holes, calculations are based on the time-derivative formula of the coordinate transform matrix; yaw-pitch-roll angles through time are mathematically determined by integrating the threecomponent angular velocity measurements from the gyroscope while also removing the Earth's rotation effect. Sensor and data fusion to increase the accuracy of borehole deviation survey is explained with an example of the method. These principles of borehole deviation surveys can be adapted for attitude estimation in air-borne surveys or for positioning in tunnels where global positioning system (GPS) signals cannot be accessed. Information on the optimization filter that must be incorporated in sensor fusion is introduced to help future research.

• The KIPS Transactions:PartB
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• v.8B no.5
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• pp.429-440
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• 2001

To achieve a computer tutor framework with high learning effects as well as practicality, the goal of this research has been set to developing an intelligent tutor for problem-solving in mathematics domain. The maine feature of the CyberTutor, a computer tutor developed in this research, is the facilitation of a learning environment interacting in accordance with the learners differing inferential capabilities and needs. The pedagogical information, the driving force of such an interactive learning, comprises of tutoring strategies used commonly in various domains such as phvsics and mathematics, in which the main contents of learning is the comprehension and the application of principles. These tutoring strategies are those of testing learners hypotheses test, providing hints, and generating explanations. We illustrate the feasibility and the behavior of our propose framework with a sample problem-solving learning in geometry. The proposed tutorial framework is an advancement from previous works in several aspects. Firstly, it is more practical since it supports handing of a wide range of problem types, including not only proof types but also finding-unkown tpes. Secondly, it is aimed at facilitating a personal tutor environment by adapting to learners of varying capabilities. Finally, learning effects are maximized by its tutorial dialogues which are derived from real-time problem-solving inference instead of from built-in procedures.

• Journal of The Korean Association For Science Education
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• v.10 no.1
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• pp.1-8
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• 1990

Mechanical CAI Program was developed for university science student The program was mainly aimed for individual study. The program was written in BASIC and construct 130s flams. This project was supproted by Ministry of Education research fund. Summary of this study is as follows. 1. The program consisted of main, pretest, tutorial, final, and several other routines for program control. 2. This program written in BASIC. 3. 20 flames for pretest routine, 90 flames for tutorial routine, 20 flames for final test routine were developed. 4. The expected rate of achivement for final test was set 80%. 5. Average mark of final test was 70.2 point through the all course of program. This means that program was constructed of well.

• The Journal of Korean Institute of Communications and Information Sciences
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• v.41 no.11
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• pp.1608-1618
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• 2016

In this paper we introduce a graph theory approach to solve the frequency assignment problem(FAP) for military communication network. Prior algorithms are implemented adaptively to the problem, and enhanced algorithms are proposed to show that their results approximately approached the optimum performance. We also proposed polarization assignment algorithms to enhance the FAP performances.

• Journal of Korean Academy of Nursing
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• v.3 no.1
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• pp.5-12
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• 1972

Programmed instruction has recent]y advanced greatly thinks to extensive world-wide research. Many countries including the United States have increasingly applied the method not only to education, but to such fields as the armed forces and business circles, too. The author has paid great attention to the programmed instruction of other countries and its application to nursing education in Korea. The author studied the matter mainly through descriptive research and has come conclusions as follows: 1) The nursing education in Korea is confronted with the great challenge of how to provide more effective learning for increased learners. Programmed instruction could meet the challenge partially and improve the general quality of student nurse. 2) Programmed instruction could reduce the required study hours by one-third so that the current excessive school credit system could be rearranged properly. 3) Programmed instruction could provide teachers and professors with more free hours to spend with students and give them advice on a kind of tutorial basis. This could bridge the gaps among the students so the improvement of the average quality of learners could be attained. There are, however, many unsolved problems in applying the programmed instruction to nursing education in Korea. Further research should be made to work out a more effective programmed instruction fit to the reality of Korea's nursing education.

• KSII Transactions on Internet and Information Systems (TIIS)
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• v.7 no.11
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• pp.2676-2689
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• 2013

Due to increased consumption of energy in the building environment, the building energy management systems (BEMS) solution has been developed to achieve energy saving and efficiency. However, because of the shortage of building energy management specialists and incompatibility among the energy management systems of different vendors, the BEMS solution can only be applied to limited buildings individually. To solve these problems, we propose a building cluster based remote energy monitoring and management (EMM) system and its functionalities and roles of each sub-system to simultaneously manage the energy problems of several buildings. We also introduce a novel energy demand forecasting algorithm by using past energy consumption data. Extensive performance evaluation study shows that the proposed regression based energy demand forecasting model is well fitted to the actual energy consumption model, and it also outperforms the artificial neural network (ANN) based forecasting model.

• Journal of the Korean Society for Library and Information Science
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• v.40 no.2
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• pp.357-387
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• 2006

This study intends to develop web-based information literacy program, analyze learning effects and to suggest a model case to those who wants to develop a web-based information literacy program in the future. For this purpose, we analyze undergraduate students' needs, design and develop a web-based information literacy program, and analyze the practical effects of the web-based information literacy program. As a result of research, we found out that both web-based and face-to-face information literacy program are similarly effective in learning and satisfactory to students.