• 한국환경교육학회지:환경교육
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• 제20권1호
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• pp.90-105
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• 2007

The purpose of this study is to find the influence of environmental issue analysis instruction on the environmental decision making ability for grade 5 elementary school students. The study was done through pre and post testing control group structure. The object of this study is grade 5 of I elementary school students which were divided into 35 student test group and 54 student control group. Through studying references, the selection standard of appropriate environment issue and the environmental issue analysis instructing objective. Conducted the environment issue instructing based on the selected environment issue and instructing objective. The classes were held in total of 6 sessions in the chapters related to class objective and class content within the curriculum. The pre and post testing was done using environment decision making ability test sheet which was reconstructed by myself and the results were analyzed by t-test. As a result of comparing pre and post testing the students in test group showed significant results in the processes of problem recognition, evaluation of alternatives, behave planing (p<.001). As a result of comparing the differences of environment decision making ability of pre and post test of test group and control group, it showed significant results in the process of evaluation of alternatives(p<.00l). The environment issue analysis class has positive influence on the environment decision making abilities of the students but since the outcome of environment decision making ability is lower, there is a need for long term environment education plan and further studies to find whether the environment issues within the textbook is appropriate in the elementary student level, useful school aspect and the influence of environment issue analysis class on the change of values for individuals.

• 대한수학교육학회지:학교수학
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• 제7권4호
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• pp.427-444
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• 2005

스프레드시트는 표, 그래프 기능 그리고 셀 참조 기능을 가지고 있고, 이러한 기능은 모델링 활동에서 중요한 역할을 한다. 이 글에서는 스프레드시트를 활용한 수학적 모델링 활동에서의 수학적 규칙의 발견과 이의 정당화 과정을 알아보고자 한다. 이를 위해 스프레드시트 환경이 특정 문제 상황의 해결에 어떻게 도움을 주는 지 알아보고, 어떻게 특정한 문제 상황을 일반적인 문제 상황으로 바꿀 수 있도록 하는지를 알아본다. 또한 문제 상황 속에 내재하는 수학적 규칙의 발견에 이르는 과정을 알아보고, 발견한 규칙의 정당화 유형과 스프레드시트가 정당화에 어떤 영향을 미치는지를 알아본다.

• 한국실내디자인학회논문집
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• 제16권1호
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• pp.73-82
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• 2007

With the change of family type and diversify of life style, residents need various unit plan in quality. A rate of economically productive women has increased, and generally double-income households will continuously increase in the future. So a research is requested to consider the double-income households's satisfaction for a unit plan based on their life characteristics. The purpose of this study is to find out double-income households's lifestyles, and to search and analyze users' needs for spatial composition according to their lifestyles, and then, embody spatial composition of Apartment Unit plans. The findings are as follows. (1) Housing lifestyles of users living in apartment arc categorized into 5 types: pursuing the trend and personality, pursuing the convenience and leisure, pursuing being domestic, making a livelihood and practicality, the type of unspecification. (2) The type of pursing the trend and individuality requests new plan and a shower bath, the type of pursing the convenience and leisure requests facility with home appliances and likes traveling and sports, the type of making a hearth and home wants a talk with their family and discuss some problem, the type of making a livelihood and practicality requests storage space, the type of unspecification wants a comfortable master bedroom zone. Consequently factors of residental space plan are need for double-income households.

• 복식
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• 제22권
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• pp.345-356
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• 1994

The Shirts Blouse was produced through the process of shirts Blouse pattern making by utilizing CAD System developed by PAD Sys-tem Techologies Co. Ltd that is suitable to educational use or industrial use. The purpose of this study was to provide the basic data for the development of efficient and various design patterns by applying this pro-cess to the actual business of apparel making. The results were as follows: 1. The applicable range of CAD system 1) The repeated work can be avoided by thansforming and developing the basic pattern stored and the storage and remodification were easy. 2) The deletion duplication movement and copy of all points and lines in the pattern can be made freely and measurement of all lengths and angles the attachment of two patterns were possible. 3) The grading Library of the basic pattern was applied as it was and the time was curtailed by adding only several grading points with the change of design. 2. The problem in the use of the CAD System 1) Through the input of basic pattern by the digitizer the minute size difference was generated as each point on the curve came to be designated. 3) In grading the line of neck girth there was inconveniences to go to the plan view in order find out deviation.

• 한국IT서비스학회지
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• 제10권1호
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• pp.65-72
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• 2011

In this paper, we consist of three dimensional acceleration sensor as a small-sized sensor module to acquire base technologies that need to estimate exhibition audience' moving distance. and that we developed algorism and device that can calculate acceleration in gravity direction with attaching it to people's body part without regard to three dimensional direction. By making use of the sensor module, we have to process the data that let it quantitatively process possible to measure people's walk and movement by computer system. We normalized sensor output data in the process of change from sensor module to acquisition of data, rectangular coordinates and single scalar acceleration value in gravity direction. Printed out sensor data attaching sensor module to people's body part is used for motion pattern detection after normalization, Motion sensor devised mode change algorism because it print data of other pattern according to attached position of body. For algorism design, we collected data occurring during walking about subject and we also defined occurring problem domain after analyzing the data. We settle defined problem domain and that we simulated the walking number measuring instrument with highly efficient in restricted environment.

• 한국안전학회지
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• 제24권3호
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• pp.19-24
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• 2009

Currently the technique of composite material field is developed day by day. The many kinds industrial facility and life articles are coming to make with the composite material. But still the engineering works field the building and the bridge uses the material which is old era and is making. To here there is a various problem but the biggest problem the theory of the composite material is complicated too and means that the application is been delayed about constructive structure. When the composite material is used widely from constructive field, too with difficult theory in technical expert and easily with the research for the experiment data accumulation is necessary. The tensile and fatigue test of the carbon/epoxy which is a high-class composite material led from the present paper consequently and the change of the intensity coefficient which follows in repeated load researched.

• 한국과학교육학회지
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• 제38권2호
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• pp.203-217
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• 2018

본 연구의 목적은 기후변화 관련 사회적 논쟁 활동에서 신문기사 읽기에 따른 고등학생들의 소집단 의사결정 과정의 양상을 분석하는 것이다. 과학과 관련된 사회적 논쟁(SSI) 관련 수업 맥락에서 학생들이 접하는 정보는 절대적으로 신문이나 TV 등의 미디어 텍스트라는 점에서 텍스트와 의사결정 과정간의 관계를 밝히는 것은 중요한 문제라 할 수 있다. 연구에는 경기도 소재 고등학교에 재학 중인 1, 2학년 학생 22명이 참여하였다. 학생들에게는 유엔 기후변화협약 당사국 총회에 대해 보도한 두 편의 신문기사가 제공되었으며, 파리기후변화 협정에 우리나라가 가입하는 것에 동의하는지에 대한 개인 및 소집단 의사결정을 요구하였다. 신문기사는 비판적 담화분석에 근거해 분석하였으며, 소집단 의사결정 과정은 문제인식과 대안 평가 및 선택에서 드러나는 특징에 주목했다. 신문기사 분석을 통해 기후변화협정은 각국의 경제적 이권과 패권의 추구라는 복잡한 이데올로기가 자리잡고 있음을 확인할 수 있었다. 한편 소집단의 문제인식 단계에서 기후변화협정에 대해 학생들이 지니는 상이한 프레임과 신문기사가 전경화한 주요 담론은 소집단이 논쟁점을 인식하는 데 주요한 변인이 됨을 알 수 있었다. 대안평가 및 선택 단계에서는 공정성과 공평성이 소집단 토의의 주요한 준거로 작용했는데, 이 역시 신문기사에서 강조된 담론과 일치하는 것이었다. 본 연구는 SSI 맥락에서 타당하고 합리적인 판단을 위해 텍스트를 비판적으로 읽을 수 있는 능력을 길러 줄 과학적 소양 교육의 필요성을 함의한다.

• 한국경영과학회지
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• 제39권2호
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• pp.131-140
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• 2014

Customer networks go through constant changes. They may expand or shrink once they are formed. In dynamic environments, it is a critical corporate challenge to identify and manage influential customer groups in a cost effective way. In this context, we apply inverse optimization theory to suggest an efficient method to manage customer networks. In this paper, we assume that there exists a subset of nodes that might have a large effect on the network and that the network can be modified via some strategic actions. Rather than making efforts to find influential nodes whenever the network changes, we focus on a subset of selective nodes and perturb as little as possible the interaction between nodes in order to make the selected nodes influential in the given network. We define the following problem based on the inverse optimization. Given a graph and a prescribed node subset, the objective is to modify the structure of the given graph so that the fixed subset of nodes becomes a minimum dominating set in the modified graph and the cost for modification is minimum under a fixed norm. We call this problem the inverse dominating set problem and investigate its computational complexity.

• 대한원격탐사학회:학술대회논문집
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• 대한원격탐사학회 2003년도 Proceedings of ACRS 2003 ISRS
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• pp.905-907
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• 2003

In this study, the correlation between the heat island effect and the vegetation in Deagu Korea was performed through using Landsat TM data. the island effect, presents high temperature on air like island, is connected with correlation between the surface temperature and the temperature on the air. In this study, surface temperature was analyzed by detecting the change of urban forestry with remote sensing using the vegetation vitality statistics reference (ratio change of the Park greens in Daegu) the heat island effect not only brings the environment pollution but also brings serious problem such as the destruction of ecosystem to city as a whole. Jeff Luvall has studied to restrain the heat island effect by making urban forestry. Even though Daegu had been the serious high temperature urban area the current temperature of Daegu has been dropped. The correlation between the heat island effect and the vegetation index was analyzed by using satellite images.

• 한국CDE학회논문집
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• 제22권2호
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• pp.190-201
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• 2017

This paper proposes how to solve a problem of FDM 3D printer's irregular output when changing volume of extrusion, adjusting movement speed of the printer's head and a way to fill new inner part. Existing slicers adjust directly to change the rotation speed of the stepper. In this method, the change of the extrusion area is delayed due to the gap between the stepper and the nozzle, so that precise control is difficult. We control the extrusion area adjusting the moving speed of the print head and making constantly the rotation speed of the stepper. Thus, the output time can be shortened by generating an efficient path having a short travel distance. For evaluation, we applied our method to lithophanes with detailed variation. Comparing existing methods, our method reduced output time at least 30%.