• Communications of Mathematical Education
• /
• v.24 no.3
• /
• pp.777-792
• /
• 2010

It is to design diverse teaching methods to construct competitive knowledge-based society and to design teaching methods suitable to Korean conditions. The study reviewed Ausubel's meaningful learning especially subsumption theory as a plan to make students understand math and receive it meaningfully through explanatory class. Analyzing meaning and conditions of Ausubel's meaningful learning can make utility of significant explanatory learning in education of mathematics easier.

• International Journal of Fuzzy Logic and Intelligent Systems
• /
• v.3 no.2
• /
• pp.178-186
• /
• 2003

Recently, many researchers have been interested in biometric systems such as fingerprint, handwriting, key-stroke patterns and human iris. From the viewpoint of reliability and robustness, iris recognition is the most attractive biometric system. Moreover, the iris recognition system is a comfortable biometric system, since the video image of an eye can be taken at a distance. In this paper, we discuss human iris recognition, which is based on accurate iris localization, robust feature extraction, and Neural Network classification. The iris region is accurately localized in the eye image using a multiresolution active snake model. For the feature representation, the localized iris image is decomposed using wavelet transform based on dyadic Haar wavelet. Experimental results show the usefulness of wavelet transform in comparison to conventional Gabor transform. In addition, we present a new method for setting initial weight vectors in competitive learning. The proposed initialization method yields better accuracy than the conventional method.

• Journal of Institute of Control, Robotics and Systems
• /
• v.8 no.7
• /
• pp.584-588
• /
• 2002

The real-time characteristic of the adaptive leaning control algorithms is validated based on the applied results of the hydraulic servo system that has very strong a non-linearity. The evolutionary strategy automatically adjusts the search regions with natural competition among many individuals. The error that is generated from the dynamic system is applied to the mutation equation. Competitive individuals are reduced with automatic adjustments of the search region in accordance with the error. In this paper, the individual parents and offspring can be reduced in order to apply evolutionary algorithms in real-time. The feasibility of the newly proposed algorithm was demonstrated through the real-time test.

• Journal of the Korea Furniture Society
• /
• v.20 no.3
• /
• pp.213-221
• /
• 2009

This study aimed at developing furniture for children by Ilgumte which is an expert manufacturer of educational equipments for school and kindergarten and the aim of this investigation is to develop the child-oriented furniture in consideration of Ilgumte's characteristic as a company composed of the disabled people, and furthermore to create a new sales market by developing own technology to improve competitive power. The current status of the child furniture in domestic and international market was researched and design concept on basis of this analysis was set, and through the designing process the new items of furniture having characteristics as follows were developed. First, the simple production way for the disabled to be able to work was selected and plywood used mainly by Ilgumte was presented as main material. Second, moving course, space and storage function were maximum considered, so that children feel convenient at using the furniture in their space, in case of playing as well as leaning. Third, natural wooden texture was mostly reflected for the emotional aspects of children and pink color played a role as partial accents. Finally, difficult production skill and expensive material were excluded for cost down.