• Title/Summary/Keyword: times ideas

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A longitudinal Study on Effects of instruction Using Systematic Analogy on Changes of Middle School Students' Concepts of Electric Current (체계적 비유 수업을 받은 중학생의 전류 개념의 시간적 변화)

  • Kim, Young-Min;Yoo, June-Hee;Park, Sung-Jae
    • Journal of The Korean Association For Science Education
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    • v.15 no.1
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    • pp.17-26
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    • 1995
  • The purposes of this study were to investigate the effects of systematic analogy on pupils' concepts changes compared with non-systematic analogy and no analogy using longuitudal study. The subjects were the second year middle school students(N=140), 49 of them were experimental group, using systematic analogy; 47 of them were control group 1, using non-systematic analogy; and 44 of them were control group 2, using no analogy. We have elicited their ideas about electric current three times: pretest, posttest and delayed posttest by P-O-E(Prediction-Observation-Explanation) method. With time, resistant ;rrelevant idea was decreasing dominantly; sequential reasoning idea and scientific idea were increasing; and current consumption idea was rare. Systematic analogy is more effective than non-systematic analogy on pupils' concepts changes of electric current. Systematic analogy is more effective than no analogy in case of simple situation, but we couldn't find significant difference between systematic analogy and no analogy in case of complicated situation.

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Development of Electrical Models of TFT-LCD Panels for Circuit Simulation

  • Park, Hyun-Woo;Kim, Soo-Hwan;Kim, Sung-Ha;Kim, Su-Ki;McCartney, Richard I.
    • 한국정보디스플레이학회:학술대회논문집
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    • 2006.08a
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    • pp.733-738
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    • 2006
  • As the film transistor-liquid crystal display (TFTLCD) panels become larger and provide higher resolution, the propagation delay of row and column lines, the voltage modulation of Vcom, and the response time of liquid crystal affect the display images now more than in the past. It is more important to understand the electrical characteristic of TFT-LCD panels these days. This paper describes the electrical model of a 15-inch XGA ($1024{\times}768$) TFT-LCD panel. The parasitic resistance and capacitance of its panel are obtained by 3D simulation of a sub pixel. The accuracy of these data is verified by the measured values in an actual panel [1]. The developed panel simulation platform, the equivalent circuit of a 15-inch XGA panel, is simulated by HSPICE. The results of simulation are compared with those of experiment, according to changing the width of signal. Especially, the proposed simulation platform for modeling TFTLCD panels can be applied to large size LCD TVs. It can help panel and circuit designers to verify their ideas without making actual panels and circuits.

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The Influence of the Types of Scientific Concepts and the Patterns of Cognitive Conflict on the Change of Students Conceptions (과학개념과 인지적 갈등의 유형이 학생들의 개념변화에 미치는 영향)

  • Kim, Beom-Ki;Kwon, Jae-Sool
    • Journal of The Korean Association For Science Education
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    • v.15 no.4
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    • pp.472-486
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    • 1995
  • The purpose of this study was to classify the types of scientific concepts by theoretical concepts and empirical concepts in physics, and to create cognitive conflict in students with logical statements and demonstrations, and to investigate conceptual changes. It seems that mechanics has much to do with the empirical concepts, and electromagnetics has much to do with the theoretical concepts. The condition of the instrument is intellegible, plausible, fruitful, and able to state and demonstrate. The instrument appropriate for these conditions was developed, which consisted of 6 items in mechanics and 6 items in electromagnetics, and conceptual changes were investigated. Structured interviews were conducted with 32 high school students to create cognitive conflict. We have elicited their ideas three times : pretest, posttest and delayed posttest. As the results of this study, demonstration method was more effective for conceptual change than logical argument method. In case of content areas, the misconceptions on mechanics concepts were changed more easily than those on electromagnetics concepts. In addition, the results of the study showed that the more cognitive conflict, the more the conceptual change was occurred.

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Variation of the Physical Properties of Coal depending upon the Quality (탄질에 따른 석탄의 물성 변화)

  • Kwon, Byung Doo;Heo, Sik
    • Economic and Environmental Geology
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    • v.21 no.1
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    • pp.97-106
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    • 1988
  • The purpose of this study is to collect basic data which are prerequisite for quantitative analysis of coal logging data. The study involves laboratory measurements of physical properties such as seismic velocities (P,S-waves), resitivity and density of domestic and imported foreign coals. The relationships between these properties were analyzed by using cross-plots. Correlation between the physical properties of coal and the results of chemical analysis (calorie, fixed carbon, ash, moisture, volatile matter and sulfur contents) was also studied to obtain ideas about coal quality analysis using logging data. Summarized results are as follows: 1. $V_P$ is exponentialy related to $V_S$. And the average value of $V_P$ is about l.8 times as large as $V_S$. 2. Since coal has very low density compared with surrounding sedimentary rocks, density logging is appeared to be the best method for identifying coal seams and evaluating their qualities. 3. For the case of domestic coals, the ash contents and calorie show a perfect inverse relationship. Since the density increases as increase of ash content with a well-defined functional form, the ash content of domestic coals can be estimated by density measurements. 4. Because of low ash content, low density and high resistivity, foreign coals and domestic lignites are easily distinguished from domestic coals.

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A Study on Yisanghua(李常和)'s "Byeonjeungbangyakjeongjeon(辨證方藥正傳)" (이상화(李常和)의 "변증방약정전(辨證方藥正傳)"에 관한 소고(小考))

  • Kim, Ki-Wook;Park, Hyun-Guk
    • Journal of Korean Medical classics
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    • v.22 no.3
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    • pp.1-6
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    • 2009
  • "Byeonjeungbang-yakjeongjeon(辨證方藥正傳)" was written in the year of 1946 by Lee Sanghwa(李常和) by adding on the original "Bang-yakhappyeon(方藥合編)". 850 formulas based on experience from the times of old and present were added to the original 588 of "Bang-yakhappyeon" and Kimsamul(金四物)'s Samultang(四物湯) modification[加減], Yun Chochang(尹草窓)'s Ijintang(二陳湯) and Pyeong-wisan(平胃散) modification, Idongwon(李東垣)'s Bojung-ikgitang(補中益氣湯) modification, and Pung(馮)'s Yukmijihwangtang(六味地黃湯) modification were added. The 60 medical texts that he consulted greatly influenced the formulas that were added, and of those books the ones of interest include "Seoksilbirok(石室秘錄)", "Byeonjeungrok(辨證錄)", "Byeonjeunggimun(辨證奇聞)" and "Bucheongjunamnyeogwa(傅靑主男女科)". If we analyze the 850 formulas of "Byeonjeungbang-yakjeongjeon", 290 of them, 34%, are related to Jinsatak(陣士鐸)'s medical texts, and of those 290, 15 are from "Seoksilbirok"(5%), 49 are from "Bucheongjunyeogwa"(17%), and 226 are from "Byeonjeungrok"(78%). So, the added formulas of Leesanghwa's "Byeonjeungbang-yakjeongjeon" have been greatly influenced by Jinsatak(陳士鐸), and by looking through Jin(陳)'s medical ideas one can find the origin of prescriptions and become more flexible.

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A Study on the Sensibility Characteristics in Haptic Space (촉지적 공간에서의 감성적 특성에 관한 연구)

  • Seo, Bo-Ram;Oh, Young-Keun
    • Korean Institute of Interior Design Journal
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    • v.22 no.5
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    • pp.162-170
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    • 2013
  • Although vision has been considered as a top sensory organ in the Western culture until modern times, the significance of space experience that communicates with a body via complex perceptions has recently garnered attention. This study criticizes the limitations of a vision-centered space and has the goal of empirically examining the sensibility characteristics in a haptic space through post-structuralism views leading up to Gilles Deleuze's philosophical ideas. This study will explore the flow of senses from the philosophical and artistic standpoint and the sensibility characteristics in a haptic space by examining the theories on haptic perceptions in connection with a space. In order to test the existing theories and identify the differences in sensibilities depending on perceptual method, the sensibilities of participants were compared using SD method (Semantic Differential scale method) and a validity test was conducted using a statistical program SPSS. The research has revealed that the average sensitivity scale of complex haptic perception was higher than single perception that only relies on vision. In addition, there was a correlation between perceptual method based on various sensory organs and human sensitivities. This study is meaningful in that it can serve a foundation for empirical research on sensibility, since it has reexamined the relationship between space and participants and demonstrated and analyzed their sensitivities through an experiment.

The Expanding of Types of Exotic Image -Focusing on the Domestic Women's Wear from 2001 to 2006- (이국적(exotic) 이미지의 유형 확장 -2001년~2006년 국내 여성복을 중심으로-)

  • Lee, Mi-Yoen
    • Journal of the Korean Society of Clothing and Textiles
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    • v.31 no.11
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    • pp.1634-1644
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    • 2007
  • This study is to define correctly the concept of exotic image that evolved in domestic fashion since 2001 and to analyze the characteristics and current tendency of the domestic fashion items of the exotic image. Thus this study will be helpful in establishing an academic field of the exotic image in the domestic fashion industry which can offer the ideas necessary for the style and item developments. As for the research method of this study, the frequency and content multi-dimensional analysis were used in the investigation of the exotic images appearing in the domestic fashion brands. The types of exotic image are #ecological#, #folk & ethnic costume#, #kitchy bricolage#, #womanish#, #period# types by analyzed with the elements of exotic images in the domestic women#s fashion brand. The exotic image in domestic fashion market in the middle of 2000s is the results of fusion phenomena among various trend styles, and through the compromise and mixture of different elements, exaggerations, and historically different times of old and new. In conclusion, the contemporary concept of exotic image is expanded by the sum of many contributing images. They are the folk ethnic costume image originating from various different cultures and also the fusion images of folk ethnic costumes from non-urban, not-modern, not-industrialized images compromised with unfamiliar codes.

A Study on Jean-Charles de Castelbajac (장 샤를르 드 카스텔바작 (Jean-Charles de Castelbajac)에 대한 연구(硏究))

  • Cho, Mal-Hee
    • Journal of Fashion Business
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    • v.2 no.3
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    • pp.73-86
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    • 1998
  • Jean-Charles de Castelbajac is gaining worldwide recognition as a designer who is not conscious of fashion and meet the desire of times. Castelbajac's works can be devided into three periods. 1. Creative challenge period. (1968~78) - His works started from creative challenge against haute-couture attract with practical design and extraordinary textile use. 2. Artistic development period. (1979~88) - He made unique ideas with the four primary colors affected by modern formative art. Pop-art clothes using cartoon or graffito were highlighted. 3. Aesthetic maturity period. (1989-now) - He received chevalier of Arts and the Letters at 1989. He was acquainted with other many designers in the world at 1990s, and his works came to mature. The aesthetic qualities in Castelbajac's works can be identified with the following themes. 1. Geometrical simplicity - Geometrical form without decoration and unnecessary lines used for the most comfortable cloth to wear and act gives an impression of explicitness and intelligence. 2. Humorous decoration - An unique idea having wit and humor shows his philosophy that must be new, vital and delightful. 3. Parody presentation - Pictures or people are reorganized 9Y work philosophy, then that get satirical and comic effects. 4. Pop-art image - Using mass communication media like a cartoon, figures, flag, graffiti, it produces clear and bright image.

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Effect of the Safety Education on Knowledge and Attitude about Jnjury Prevention among Elementary School Children (안전교육이 초등학생의 사고예방에 대한 지식 및 태도에 미치는 효과)

  • Kim Shin-Jeong;Lee Jung-Eun;Song Mi-Kyoung
    • Child Health Nursing Research
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    • v.9 no.4
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    • pp.349-358
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    • 2003
  • Purpose: This study aimed at not only suggest some ideas useful in planning and doing the safety education in the elementary schools in the near future putting into test the safety education proposal which has been developed by researchers in accordance with the national 7st education courses but also improve health of the children through taking right safety knowledge and sound safety attitude. Method: For this study 140 student are selected from 3-5th grade of the elementary school in Kyoungki-Do and Kwangwon-Do and have been taught the safety education during 10weeks, 10times. Result: 1) After the safety education, knowledge about the injury prevention of the children show to be significantly different from that they had before(t=-9.156, p=.000). 2) In order to look into any effect of the attitude about injury prevention after the safety education there were significant difference(t=-3.755, p=.000). Conclusion: As the findings of the study indicating that safety education expand the correct knowledge about injury prevention and have more affirmative and sound attitude about injury prevention. So it may be concluded that, safety education have the positive effect both knowledge and attitude about injury prevention among elementary school children.

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A Theoretical Approach to Oriental Ecological Philosophy for Orthodoxy Korean Thought-Based Environmental Education -Regional Communality and Restoration of People's Real Life- (우리식 환경교과 구성을 위한 기초이론 연구 -지역 공동체성과 생활세계의 복원을 중심으로-)

  • 김태경
    • Hwankyungkyoyuk
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    • v.15 no.2
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    • pp.30-48
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    • 2002
  • This study is on theoretical foundation for orthodoxy korean style Environmental Education based on oriental ecological thought. The main theme is that various kinds of all the ideas related with ecological thought based on oriental thoughts for EE should be focused into Moderation, the core-concept of oriental confuscian thoughts. The Moderation has not meant just a personal enlightenment, as it has known to general people, it can be developed into social status core-consciousness for regulating the natural resource. So we should focus on this conceptual developing mechanism personal enlightenment into social status for our orthodoxy konean style EE. It can be infered from Taoism, Confuscionism Buddism, especially, Anxiety Consciousness (WOOHWAN) for grand-scale anxiety to public society and universal cosmos. And also I drawed Harbermas-philosophy to provide good means for fortifying this research. His communication theory and restoration of real life for public people communication can be connected to oriental thoughts in the aspect of reciprocative response among the community people. So our orthodoxy korean style EE can be erected on the community-based regionality and their public communication through reciprocative response process. We should try to make this surrounding conditions nature-familiar oriental philosophy has provided from ancient times in the aspect all the traditional thought has been eco-deterministic.

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