• Journal of the Korea Institute of Information and Communication Engineering
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• v.14 no.6
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• pp.1476-1481
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• 2010

Cyber education community in the digital era is going on across all areas of knowledge accumulation rate of acceleration of the demand for retraining and lifelong learning can effectively accommodate. Therefore, new teaching methods in the future as consumer-driven 21st century is expected to settle into the main education system. However, to properly interact with people due to lack of feedback delay, reading and writing intensive courses is detrimental to the environment caused by a particular student, and Computer skills are based on computer-related technology to disadvantage poor students, and many have problems. In this paper, recent university education and cyber education requires a paradigm shift is required in an environment that factors affecting students' satisfaction were evaluated, and Improvement of cyber education will be studied.

• Journal of the Korean Institute of Intelligent Systems
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• v.8 no.2
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• pp.50-59
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• 1998

This paper presents stabilization and adaptive control of flexible single link robot manipulator system by self-recurrent neural networks that is one of the neural networks and is effective in nonlinear control. The architecture of neural networks is a modified model of self-recurrent structure which has a hidden layer. The self-recurrent neural networks can be used to approximate any continuous function to any desired degree of accuracy and the weights are updated by feedback-error learning algorithm. When a flexible manipulator is rotated by a motor through the fixed end, transverse vibration may occur. The motor toroque should be controlled in such a way that the motor rotates by a specified angle, while simultaneously stabilizing vibration of the flexible manipuators so that it is arresed as soon as possible at the end of rotation. Accurate vibration control of lightweight manipulator during the large changes in configuration common to robotic tasks requires dynamic models that describe both the rigid body motions, as well as the flexural vibrations. Therefore, a dynamic models for a flexible single link robot manipulator is derived, and then a comparative analysis was made with linear controller through an simulation and experiment. The results are proesented to illustrate thd advantages and imporved performance of the proposed adaptive control ove the conventional linear controller.

• Journal of Institute of Control, Robotics and Systems
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• v.10 no.6
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• pp.551-556
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• 2004

Coagulation process is one of the most important processes in water treatment procedures for stable and economical operation, and coagulant dosing of this process for most plants is generally determined by the jar test. However, this method does not only take a long time to analyze and get the result but also has difficulties in applying to automatic control. This paper shows the feasibility of applying neural network to control the coagulant dosing automatically in water treatment plant. To be specific, the predicted results of the neural network model is shown to be similar to that of jar test. The input variables for learning the neural network are turbidity, water temperature, pH, and alkalinity. Combining the neural network and SCD(Streaming Current Detector) for feedforward and feedback control of injecting coagulant, a rapid change of the raw water quality can be accommodated.

• English Language & Literature Teaching
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• v.17 no.4
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• pp.1-22
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• 2011

Little has been known about the process of the language teacher professional development. The present study aims to investigate an assumption that anybody who has subject matter knowledge will be a good language teacher. A teacher with rich linguistic knowledge started to question the effectiveness of his online class. The teacher, in collaboration with a teacher trainer, became involved in the critical examination of his online class, seeking for more effective ways of teaching. The trainer provided the teacher with clinical supervision, which is characterized as developmental, collaborative, non-judgemental, interactive, and teacher-centered. The data collected at the multi-facets of the online teaching shows how the process of the teacher's decision-making became principled on the basis of recent developments in English language teaching, and how the teacher has gained pedagogical knowledge through reflection upon his teaching. The feedback from the students reveals that such teacher professional development is beneficial to student learning. These findings suggest that language teacher's professional development can take place when they are engaged in reflective teaching and classroom investigation. It is also suggested that the process of teacher development can be enhanced through collaborative supervision with trust, openness and congeniality between parties involved.

• Journal of Aerospace System Engineering
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• v.14 no.2
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• pp.36-43
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• 2020

Many countries and international organizations have carried out rover missions to explore planetary surfaces. Accordingly, the demand for mechatronics education, which is closely related to building exploratory robots, is also steadily increasing. However, due to the complexity in understanding the background information needed for mechatronics, it is hard for pre-college students to study such process. In this study, we suggest an educational platform for mechatronics using a combined robot kit with a spherical robot and a smartphone application. To provide a visual understanding, the dynamic model of the robot is constructed while analyzing the error between actual driving and a simulation, and the educational algorithm of the game and a feedback method are proposed to improve the learning efficacy by considering the user's level of knowledge of mechatronics. We use this educational spherical robot to develop a curling game platform that can impart engineering education even when students lack significant knowledge.

• Hwankyungkyoyuk
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• v.20 no.3
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• pp.45-62
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• 2007

The purpose of this study was to analyze the status of environment-related teaching in elementary and secondary schools. A questionnaire survey was conducted for the study. Items in the questionnaire were developed based on the theory of environmental education and integrated education. The questionnaire was responded to 501 elementary school teachers, 273 middle school teachers, and 210 high school teachers in the city of Seoul and Kyunggi Province. The survey analysis revealed that elementary and secondary school teachers recognized 'environmental action skills' as the most important objective for school environmental education. Contrary to the teachers' expectations, it was found that there is insufficient teaching and learning materials for teaching in the domain of 'environmental action skills' and they could not confidently teach the skills in environment-related classes. For professional development of teachers in integrated environmental education, pre- and in-service programs will be developed systematically in a workshop to give teachers an opportunity to analyze teaching materials, design instruction plan, perform class trial, and evaluate the class situation for feedback. The results of this study can serve as a basic reference for improvement of environment-related subject education.

• Journal of the Korean Society of Industry Convergence
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• v.4 no.4
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• pp.403-411
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• 2001

A criterion for evaluation of burners has changed recently, and the environmental problems are raised as a global issue. Burners with higher thermal efficiency and lower oxygen in the exhaust gas, evaluated better. To comply with environmental regulations, burners must satisfy the $NO_x$ and CO regulation. Consequently. 'good burner' means one whose thermal efficiency is high under the constraint of $NO_x$ and CO consistency. To make existing burner satisfy recent criterion, it is highly recommended to develop a feedback control scheme whose output is the consistency of $NO_x$ and CO. This paper describes the development of a real time flame diagnosis technique that evaluate and diagnose the combustion states, such as consistency of components in exhaust gas, stability of flame in the quantitative sense. In this paper, it was proposed on the flame diagnosis technique of burner using Neuro- Fuzzy algorithm. This study focuses on the relation of the color of the flame and the state of combustion. Neuro- Fuzzy learning algorithm is used in obtaining the fuzzy membership function and rules. Using the constructed inference algorithm, the amount of $NO_x$ and CO of the combustion gas was successfully inferred.

• Korean Journal of Human Ecology
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• v.20 no.2
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• pp.475-485
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• 2011

This study was conducted with the purpose of surveying the high school and university students and culinary teachers in charge of guidance in cooking related departments to see the recognition levels of culinary practice education and to suggest improvement plans. The subjects of this research were 616 culinary high school students, 419 culinary university students, and 103 culinary teachers. The collected data was compared and analyzed by frequency and percentage. The collected data was analyzed(i. e., $X^2$ test and t-test) using SPSS 14.0(SPSS Inc, Chicago, USA). Learning demands were shown to be high and much more practice was demanded, so it is required to raise the importance of culinary arts as a subject. Manpower placement, such as practice assistant teachers and practice teachers, is necessary and more training support for teachers' professional ability expansion is required. Moreover, it is required that practices after theory study, video education, and practice demonstrations should be performed and multimedia developed. Detailed practice demonstrations should be enabled and foreign subject education should be performed. The general evaluation in which feedback is appropriately made, along with the evaluation of practice courses and results needs to be performed. Positive school life should be prepared by performing proper course education simultaneously.

• Fashion, Industry and Education
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• v.14 no.1
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• pp.40-49
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• 2016

This study examined students' perceived importance of the benefits derived from an international multi-course collaborative (IMCC) project and how these perceptions impact students' extrinsic and intrinsic motivations for using the project Facebook (i.e., perceived usefulness and enjoyment), attitude toward the project, and intent to participate in future IMCC projects. The data were collected from 96 students who participated in the IMCC project and were enrolled in four different fashion merchandising courses in two different countries, the U.S. and South Korea. This study found that perceived enjoyment of the project Facebook influenced attitude toward the project and intent to participate in future IMCC projects. Perceived usefulness and enjoyment were predicted by the perceived importance of cultural understanding and feedback exchange among international group members. Attitude was influenced by the perceived importance of networking through the IMCC project, while intent to participate in future IMCC projects was predicted by perceived importance of cultural understanding and networking through the IMCC project. This study provides educators in the related disciplines insights about how to incorporate social network sites into course curricula to motivate students' project participation and learning.

• The Journal of Korean Institute for Practical Engineering Education
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• v.2 no.2
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• pp.83-90
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• 2010

The purpose of this study was to investigate guidelines for instructional use of e-mail and the method in the present investigation was followed by an analysis of research literatures. This study suggests the following conclusions. First, instructors should use e-mail effectively to improve communication between an instructor and a learner or learners. Communication was essential to support a good instruction. Second, to use effectively e-mail in teaching and learning process, guidelines should followed by considering e-mail characteristics. These guidelines were as follows: (1) Spelling and grammar should be followed correctly. (2) Messages should be followed shortly and concisely. (3) Summaries should be stated in your first sentence. (4) Messages should be responded rapidly. (5) Messages should be responded kindly. (6) Sarcasm and humor should be used carefully.