• The Journal of The Korea Institute of Intelligent Transport Systems
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• v.16 no.1
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• pp.131-146
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• 2017

Unlike in the past based on autonomous vehicle development sensor, In recent years, research has been conducted using external data such as LDM to compensate for the disadvantages of sensors. So, this study suggested the construction method of static map that provides road information for autonomous driving of vehicles as LDM - based information. In other to suggest, after review LDM's ISO 14296 and data specification and map of precise roda map of NGII, we had confirmed the correspondence wiht the international standard of NGII specification. As a result of the review, it is relatively good in terms of provided data and information, but the road structure expression is partially incompatible with the international standard. AS it is necessary to supplement about currently specification and method and suggest, this study had suggested ways to supplement the insuficient and to express the road structure.

• Korean Journal of Childcare and Education
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• v.9 no.1
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• pp.175-200
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• 2013

This study focused on the relationships among teachers'playfulness, teachers'positive play beliefs, teaching efficacy on play and teacher's strategies of problem behavior guidance, and especially the mediating effects of teaching efficacy on children's play. Subjects were 151 early childhood teachers in Seoul and Chungcheungnam-do. The collected data were analyzed using simple regression, hierarchical multiple regression and the Sobel test. The main results of this study were as follows. First, teachers' playfulness and teachers'positive play beliefs had a positive influence on their proactive, positive reactive strategies of problem behaviors. On the other hand, teachers' positive play beliefs had a negative influence on their negative reactive strategies of problem behaviors. Second, teachers' playfulness and teachers'positive play beliefs had a positive influence on their teaching efficacy on play. Finally, the effects of teachers' playfulness on their proactive, positive reactive strategies of problem behaviors of preschoolers were totally mediated by their teaching efficacy on play.

• Journal for History of Mathematics
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• v.24 no.3
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• pp.77-94
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• 2011

This study aims to provide a teaching strategy accommodating the symbols of the definite integral and guiding students through the meaning of notations in area and volume calculations, based on characterization as to how students comprehend the symbols used in the Riemann sum formula and the definite integral, and their interrelationship. A survey was conducted on 70 high school students regarding the historical background of integral symbols and the textbook contents designated for the definite integral. In the following analysis, the comprehension was qualified by 5 levels; students in higher levels of comprehension demonstrated closer relation to the history of integral notations. A teaching strategy was developed accordingly, which suggested more desirable student understanding on the concept of definite integral symbols in area and volume calculations.

• Journal of the Korean School Mathematics Society
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• v.11 no.3
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• pp.421-438
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• 2008

Understanding the concept of definite integral is based on understanding the concept of mensuration by parts. However, several previous studies pointed out the difficulty on teaching the concept of mensuration by parts. The paper provides some didactic strategies which help teaching the concept of mensuration by part. To teach the concept of definite integral, in the high school curriculum, the relation between definite integral and series is dealt with. However, the paper suggests that importing the concept of series is not indispensable to teach the concept of definite integral. It is proper that definite integral is taught as limit of particular sequence not series.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.19 no.1
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• pp.179-187
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• 2018

This study purpose is to improve athletes by investigating the relation between the leadership behavior type of athletes and athlete satisfaction and exercise flow. The sampling method was non-probabilistic sampling method. The number of questionnaires was 381 for analyzing the data. SPSS/PC+ Window 21.0 version statistical program were used for analyzing the questionnaire answers. Frequency analysis, factor analysis, correlation analysis and multiple regression analysis were used. The study results are as follows. First, there were positive correlations between leadership behavior type of athletes and athlete satisfaction and exercise flow, but not between authoritative behavior of leader behavior type and exercise flow. Second, the effect of leadership behavior type of athletes on satisfaction of athletes was positive on social interaction related with training, instruction, and social support, on task execution related with training and instruction, and on coaching related with training, instruction, and positive feedback. Third, the effect of leadership behavior type of athletes on flow of exercise was positive on cognitive commitment related with training, instructions and positive feedback, and on behavioral commitment related with training, instructions, positive feedback, and social interaction. So, athletes will be able to perform good exercise skills if they come to the game in flowing exercise satisfaction and exercise.

• Journal of the Korea Society of Computer and Information
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• v.14 no.10
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• pp.207-215
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• 2009

Recently, the research of the analysis of the crime spatial is increased by using the computer information technology and GIS (Geometric Information System) in order to prevent the urban crime so as to increase the urbanization rate. In this paper, a probability map formed by the raster is organized by the quantification of crime risk per the cell using the region property of the urban spatial information in the static environment. Also, a map of the risk probability is constructed based on the relative risk by the region property, the relative risk by the facility, the relative risk by the woody plant and the river, and so on. And, this integrated risk probability map is calculated by averaging the individual cell risk applied to the climatic influence and the seasonal factor. And, a probability map of the overall risk is generated by the interpretation key of the crime occurrence relative risk index, and so, this information is applied to the probability map quantifying the occurrence crime pattern. And so, in this paper, a methodology of the modeling and the simulation that this crime risk probability map is modified according to the passage of time are proposed.

• Journal of the Korea Academia-Industrial cooperation Society
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• v.20 no.10
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• pp.326-331
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• 2019

In the real world, there are both dynamic objects and static objects, but an autonomous vehicle or mobile robot cannot distinguish between them, even though a human can distinguish them easily. It is important to distinguish static objects from dynamic objects clearly to perform autonomous driving successfully and stably for an autonomous vehicle or mobile robot. To do this, various sensor systems can be used, like cameras and LiDAR. Stereo camera images are used often for autonomous driving. The stereo camera images can be used in object recognition areas like object segmentation, classification, and tracking, as well as navigation areas like 3D world reconstruction. This study suggests a method to distinguish static/dynamic objects using stereo vision for an online autonomous vehicle and mobile robot. The method was applied to a 3D world map reconstructed from stereo vision for navigation and had 99.81% accuracy.

• Journal of Digital Convergence
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• v.14 no.10
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• pp.543-551
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• 2016

This study is to find out using of non-verbal communication of a golf instructor affects faith of Instructor and concentration in sports. Object of study was participants who had been taking a golf lesson and had an experience of a golf lesson at indoor and outdoor driving ranges located in Seoul and Gyeonggi Province for their own leisure sports. Among them, questionnaires from 293 persons were used for data processing and analysis of frequency, reliability test, confirmatory factor analysis and regression analysis were conducted for data processing. The conclusion from those processes are as below. First, non-verbal communication of a golf instructor has a positive effect on faith of instructor. Second, non-verbal communication of a golf instructor has a positive effect on concentration in sports. Third, faith of instructor has a positive effect on concentration in sports.

• Proceedings of the Korean Information Science Society Conference
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• 2001.04b
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• pp.670-672
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• 2001

A Design of Theme-Oriented History Learning System Using GIS Based on WWW 초고속통신망과 웹 인터페이스의 발전은 교육환경에 많은 변화를 가져왔으며, 더불어 웹을 기반으로 하는 교육적 활용방법이 활발히 연구되고 있다. 본 논문에서는 기존의 정적지도를 이용한 획일적 역사학습방법을 지양하고, 동적인 학습이 가능하도록 클라이언트 중심의 웹기반 GIS를 이용한 테마지향 역사학습시스템을 설계하였다. 설계된 시스템은 크게 5가지 모듈로 구성되고 학습자 관리 DB, 학습 정보 DB, GIS DB와의 인터페이스 기능을 갖도록 기수라고, 이들 관계를 OMG 클래스다이어그램으로 보였다. 본 논문의 역사학습시스템은 학습자가 하는 주제를 선택하여 역사학습 정보를 요구할 때 지리적 위치를 지도상에 보여줌으로서 시각적이고 공간적인 이해를 가능하게 하였다. 또한 본 시스템은 텍 ;, 이미지, 사진, 동영상 등의 속성정보를 이용한 멀티미디어 정보와 효과적인 학습정보 검색을 위한 다양한 검색방법을 제공하여, 학습자의 흥미를 유발시키고 역사학습을 효율성을 높일 수 있도록 하였다.록 하였다.

• Communications of Mathematical Education
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• v.26 no.2
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• pp.155-176
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• 2012

In this paper, we present a practical and essential method of using team projects for calculus. We, specifically, take into account the team project that calculate the volume of lung represented on CT scan images. We have demonstrated that the process of analyzing the images in a team project encourage studying numerical methods of integration for calculus. Also, we have used various technological programs(MATLAB, MATHEMATICA, MS Excel) to solve the team project.