• The Mathematical Education
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• v.24 no.2
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• pp.9-26
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• 1986

The mathematics education circles in Japan has a variety of subjects. I want to speak w generally are considered on those subjects. Some of these subjects are as follows: (1) The ratio of students who go on to high schools is about 95 percent, so that it is h to solve how to design the mathematics curriculum for the poor scholars. (2) Though the effects of instruction at the schools does not betray the nation's trust, JUKU increase in number. Thus all teachers in schools cannot but endeavor to fulfil the responsibility. (3) Some of the junior high school's teachers suffer from the misconducts and violences pupils. Thus researchers of mathematics education in such schools tend to stagnate. 4) The tudents and pupils get good results in the examinations of calculation, but in the examinations such as word problems that require their judgements not so. Etc. t is not easy to solve or cope with the these subjects. or the subjects as (3), all teachers concentrate their efforts on the activation of lessons the heightening the pupil's will to learn. or the subjects as (4), the idea of mathematical thinking has be advocated since about 1960, recently the 'problem solving' are proposed and are studying. Lastly the researchers in the university are theorizing their own works and digest and utilize arge foreign's literatures. Furthermore a great number of teachers make an effort to research their calssrooms. But a great part of the results of their researches are utilized only in country. I hope, hereafter, that the effects of researches in Japan become known and ized to the foreign countries.

• Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference
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• 2006.11a
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• pp.89-90
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• 2006

The CNTs are of great interest because of their unique complete properties of matter, especially, the large thermal conductivity (Thermal conductivity of CNTs ~ >2000W /mK vs. Thermal conductivity of Aluminum ~ >204W/mK). However, owing to the strong agglomeration cause by the vander wall's force, the CNTs are limited to applicate. In this study. we suggest a new method for CNTs dispersion. which are developed by the mechanical and chemical method. and then Cu was coated. This new process produces CNTs/Cu nanocomposite powders. The CNTs are homogeneously located within the Cu powders by chemical reaction. And the thermal properties of the CNTs/Cu nanocomposite were investigated.

• Journal of Korea Multimedia Society
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• v.17 no.4
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• pp.514-525
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• 2014

We have performed a short-term computer information and communication technology education using Arduino. The purpose of this education was to progress basic training interestingly and discover excellent students. Training was about practicing basic examples about H/W, S/W, communication, and solving creative tasks. We divided training participants into a team composed of each 3 members and educated them for 10 hours. Instructors were consists of 1 main teacher and 3 teacher assistants. Training was about assembling Arduino based robot, blinking LED, operating speaker, serial communication, producing software for wireless communications and autonomous of robot, and control hardware of robot. Through this study, we developed a meaningful ICT integrated curriculum which has high usefulness in a short period. Students participated in this education completed 96% out of 10 creative tasks, and this study analyzes the result of curriculum and suggests further research directions.

• 대한공업교육학회지
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• v.33 no.2
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• pp.259-272
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• 2008

In order to improve the productivity and quality of boat's mold in leisure boat industry, the development of modelling and machining technology of leisure boat's plug is strongly required. The traditional lines drawing approach by hand required the designer to both create fair curves and to make sure that the curves matched up to each other in the three main drawing views: profile, plan, and section. However, one will find when studying lines drawings in books that the curves might look smooth and fair, but the lines do not agree exactly in the three views. Therefore, the 2 dimensional drawing data of leisure boat are transformed using 3 dimensional design s/w and CAM s/w. In addition, the leisure boat is designed with a 3 dimensional s/w. The NC cutting data are generated by the CAM s/w. The surface characteristics of machined surface are investigated at various cutting conditions such as spindle speed, feed speed, and cutting material.

• The Journal of Information Systems
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• v.14 no.2
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• pp.75-99
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• 2005

Today, many universities are confronted with the changing education paradigm such as e-learning, Distance Education, Virtual University, This IT-based teaming paradigm shift is certainly a new opportunity or a threat to our universities. To overcome this problem the universities should think e-Learning as strategic weapon, such as many firms created competitive weapons from the information systems at the 1980s. So, e-Learning system can be a SIS(Strategic Information System) which supports university's future education strategies. To build a e-Learning system, not only many H/W and S/W resources but also expert personnels are required. An organization such as local university who is week at financial status can't himself plan the system. The Local University Community e-Learning Centers that support the demand of e-learning for their community are recommended. In order to operate these centers efficiently, the strategic roles of the e-Learning center should first be defined. To define the strategic roles, We classified the strategic roles of the e-Learning center into four dimensions, (1) to improve management efficiency, (2) to enhance educational service, (3) to acquire competitive advantages, (4) to build new education infrastructure, and each dimension has 5 or 6 measurement items. As result, to enhance the educational service was considered as the most significant factor among the four dimensions of strategic roles, and the infrastructure building was the next. We also tried to find the difference for each factor by the characteristics of responsor. The data showed that there was litter difference between the groups in evaluating the significance of strategic roles of e-learning centers. Through the strategic roles definition and analysis of expected role ratings, we could have recommended the direction and operation policies of the e-Loaming centers.

• Journal of The Korean Association of Information Education
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• v.9 no.2
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• pp.349-358
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• 2005

It is not sufficient to give a lecture in programming language without programming practice since lectures on programming must be given at lecture room with H/W and S/W for programming. In this paper, learning for Visual Basic programming has been designed and embodied with the leveled learning system in order to give an effective and positive result to both teacher and learner under the constructivism theory of education (Problem Based learning, Self-Directed learning) for the theoretical basis of the seventh education curriculum. We implemented a web courseware for Visual Basic programming using ActiveX and Tutor System. As the result of education using this courseware, it is verified as a leveled education method to adapt the learning ability of individual students, and it can raise the achievement, enthusiasm of learning and provide various opportunity of education with this various education methods. Also it enhances the problem solving ability and the logical thinking power by providing students with error correction learning.

• Journal of the Korean Society of School Health
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• v.19 no.2
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• pp.117-125
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• 2006

Purpose : The purpose of this study is to test the effect of the web-b ased alcohol preventive education for ndicate the model of alcohol preventive education for students spreading al over the family and the comunity.Methods : This study was performed on the 1 public and 1 private eleme ntary school students who are the six grade in Seongdong-gu, Seoul. The number of experimental gr oup was 117 and control group's number was 131, totaled 248. eeks. The pre- and the post-test for web-based alcohol preventive education were tested about knowle dge and attitude toward drinking by questionnaire. The data analysis was done using SPS/Win 12.0 p rogram.Results：The results of this study are as follows;1. Compared with control group, experimental group which was educated the web-based alcohol preventive icant diference in the knowledge toward drinking.2. Compared with control group, also the experimental group w as improved with significant diference in attitude toward drinking after the education.3. In control group, female students' knowledge of drinking w as more increased than male students. And the he group which experienced drinking.Conclusions : The web-based alcohol preventi ve education is worth as a int ervention to get positive influence for the health education. Especially in female studen ts who didn't met with drinking, early education for alcohol prevention is very important. Therefore i t will be helpful that coperate with district ofice ithin the comunity for becoming established the controled drinking pattern.

• Bulletin of the Korean Chemical Society
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• v.15 no.8
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• pp.622-627
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• 1994

Conducting solid samples are successfully analyzed with the spark ablation combined to the moderate power (500W) Helium Microwave Induced Plasma (He MIP). The relative standard deviations are in the range of 3-10% and the detection limits are around 50 ${\mu}$g $g^-1$. These values are higher than those of Ar MIP or Ar Inductively Coupled Plasma. Spark ablated particles are examined to investigate the analytical characteristics of the system.

• Proceedings of the KSRS Conference
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• 2004.10a
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• pp.626-629
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• 2004

Texture imaging, which means texture image creation by co-occurrence relation, has been known as one of useful image analysis methodologies. For this purpose, most commercial remote sensing software provides texture analysis function named GLCM (Grey Level Co-occurrence Matrix). In this study, texture-imaging program for GLCM algorithm is newly implemented in the MS Visual IDE environment. While, additional texture imaging modules based on GLDV (Grey Level Difference Vector) are contained in this program. As for GLCM/GLDV texture variables, it composed of six types of second order texture function in the several quantization levels of 2(binary image), 8, and 16: Homogeneity, Dissimilarity, Energy, Entropy, Angular Second Moment, and Contrast. As for co-occurrence directionality, four directions are provided as $E-W(0^{\circ}),\;N-E(45^{\circ}),\;S-W(135^{\circ}),\;and\;N-S(90^{\circ}),$ and W-E direction is also considered in the negative direction of E- W direction. While, two direction modes are provided in this program: Omni-mode and Circular mode. Omni-mode is to compute all direction to avoid directionality problem, and circular direction is to compute texture variables by circular direction surrounding target pixel. At the second phase of this study, some examples with artificial image and actual satellite imagery are carried out to demonstrate effectiveness of texture imaging or to help texture image interpretation. As the reference, most previous studies related to texture image analysis have been used for the classification purpose, but this study aims at the creation and general uses of texture image for urban remote sensing.

• The Journal of Korean Association of Computer Education
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• v.19 no.2
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• pp.31-40
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• 2016

Textbook is a tool that helps achieve the learning objectives based on the content of the curriculum. The contents of the textbook will be constructed newly because revised curriculum 2015 was announced. The aim at this study is to provide an indication of the textbook writing. To achieve the objectives, we conducted a pilot study in order to analyze the content of the textbook of informatics currently being used in middle schools and to derive the direction of access to the newly configured physical computing unit. Analysis of content elements was used Romey. The pilot studied makes lesson harmonized with H/W and S/W by utilizing the robot. According to the results of the analysis, there is one textbook among the currently used textbooks that is suitable to help students develop their thinking and in the case of physical computing unit, inquiry instruction showed positive results. This study suggestions necessity of writing types that sets importance on activities in the form of textbook.