• 제목/요약/키워드: compare and analyze

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대학 강의실의 음향성능 개선에 관한 연구 (An Study on the Improvement of Acoustics Performance of the Lecture Room)

  • 한경연;서정석;김재수
    • 한국주거학회:학술대회논문집
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    • 한국주거학회 2004년도 추계학술대회 논문집
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    • pp.361-366
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    • 2004
  • This study has carried out in order to furnish the fundamental material to systemize the lecture room into multimedia in the future, by locating college lecture room as the subject of study, by compare and analyze on acoustic character in both before and after of each improvement. Thereby, now we are about to compare and analyze on physical character of room acoustics in both common lecture room before improvement and the modified multimedia-lecture room after its improvement. Observing the conclusion obtained through experiment, reverberation time in the modified 'lecture room after improvement' became shorter compare with the 'lecture room before improvement', definition and RASTI also improved to be suitable to lecture, and considered that it is able to elevate the intimacy with studying and teaching efficiency, as well.

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LED램프를 적용한 사무소 건물의 실내조명환경 및 에너지 성능분석 (Interior Light Environment and Building Energy Performance Analysis of LED and Fluorescent lamp installed in Office Building)

  • 김병수;홍원표
    • 한국조명전기설비학회:학술대회논문집
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    • 한국조명전기설비학회 2009년도 춘계학술대회 논문집
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    • pp.466-471
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    • 2009
  • Generally LED lamp has many advantages to compare with a general lamp, long life and no pollution matter like the mercury. Also it is excellence for color rendering and need to small consumption electric rower. However LED lamp has some disadvantages to compare to general fluorescent lamp and That is small light flux about 50% and narrow light distribution than fluorescent lamp. Therefore, to apply LED lamp in an office building, after analyze a illuminance distribution with an environment analysis and cooling, heating and light energy. The purpose of this study is to analyze light environment. light, cooling and heating energy simulation in Office building.

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Na고체전해질의 제조방법에 따른 CO2감응 특성연구 (A Study on Characteristics to Fabrication Methode of Na Solid Electrolyte)

  • 곽종식;최순돈;이덕동
    • 한국전기전자재료학회논문지
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    • 제20권9호
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    • pp.761-765
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    • 2007
  • NASICON sensors compare properties with manufacture method in order to improve $CO_2$ sensitivity and stability the sensing behaviors. Oxidation mixing method and Sol-gel method were compare analyze to characteristic in which each other sintered to $900^{\circ}C\;to\;1100^{\circ}C$ and NASICON $CO_2$ gas sensors were fabricate. Oxidation mixing method showed better sensing properties at sintered $1100^{\circ}C$ result to NASICON electrolyte analyze with manufacture methods.

Transformation Approach to Model Online Gaming Traffic

  • Shin, Kwang-Sik;Kim, Jin-Hyuk;Sohn, Kang-Min;Park, Chang-Joon;Choi, Sang-Bang
    • ETRI Journal
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    • 제33권2호
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    • pp.219-229
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    • 2011
  • In this paper, we propose a transformation scheme used to analyze online gaming traffic properties and develop a traffic model. We analyze the packet size and the inter departure time distributions of a popular first-person shooter game (Left 4 Dead) and a massively multiplayer online role-playing game (World of Warcraft) in order to compare them to the existing scheme. Recent online gaming traffic is erratically distributed, so it is very difficult to analyze. Therefore, our research focuses on a transformation scheme to obtain new smooth patterns from a messy dataset. It extracts relatively heavy-weighted density data and then transforms them into a corresponding dataset domain to obtain a simplified graph. We compare the analytical model histogram, the chi-square statistic, and the quantile-quantile plot of the proposed scheme to an existing scheme. The results show that the proposed scheme demonstrates a good fit in all parts. The chi-square statistic of our scheme for the Left 4 Dead packet size distribution is less than one ninth of the existing one when dealing with erratic traffic.

중학교 과학과 IPER 수업과 PBL 수업이 학업성취도 및 자기주도적 학습 특성에 미치는 효과 (The Effects of IPER and PBL on Academic Achievement of Science and Self-directed Learning Characteristics in Middle School Science)

  • 손성현;최성봉
    • 대한지구과학교육학회지
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    • 제5권1호
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    • pp.124-133
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    • 2012
  • Modern society requires people with practical knowledge that is able to recognize actual problems in the complex reality and solve the problems. Due to that reason, the 7th National Curriculum aims to basically cultivate ability adaptable to information-oriented global age by maximizing students' individuality and creativity. However, as existing education is hard to improve creativity, logical thinking, information processing skills, and problem-solving ability in the information-oriented age, self-directed learning is getting highlighted. Therefore, this study aimed to look into how learner-oriented IPER for self-directed learning and problem-based learning(PBL) in middle school science affected academic achievement of science and self-directed learning characteristics. As the results of the study are as follows. First, as the result of pre-and post-test to compare and analyze the effects of IPER instruction model and PBL instruction model on learners' academic achievement increase, it showed that the class with IPER instruction model was more effective. Second, as the result of pre-and post-test to compare and analyze the effects of IPER instruction model and PBL instruction model on self-directed learning characters, IPER was more effective than PBL overall, and among sub-areas, 'openness', 'self-concept', 'initiative', 'future-oriented self-understanding', and 'self-evaluation' were more effective in IPER while 'creativity' was more effective in PBL. However, among sub-areas 'responsibility' and 'learning enthusiasm' didn't show statistically significant difference. Third, the results of the post-survey to compare and analyze learners' perception regarding the application of IPER instruction model and PBL instruction model, the two models were positively affective. In addition, as the result of comparing the two models, IPER was more positive than PBL.

Comparative Analysis of Detection Algorithms for Corner and Blob Features in Image Processing

  • Xiong, Xing;Choi, Byung-Jae
    • International Journal of Fuzzy Logic and Intelligent Systems
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    • 제13권4호
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    • pp.284-290
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    • 2013
  • Feature detection is very important to image processing area. In this paper we compare and analyze some characteristics of image processing algorithms for corner and blob feature detection. We also analyze the simulation results through image matching process. We show that how these algorithms work and how fast they execute. The simulation results are shown for helping us to select an algorithm or several algorithms extracting corner and blob feature.

A Comparative Study on Intonation between Korean, French and English: a ToBI approach

  • Lee, Jung-Won
    • 음성과학
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    • 제9권1호
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    • pp.89-110
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    • 2002
  • Intonation is very difficult to describe and it is furthermore difficult to compare intonation between different languages because of their differences of intonation systems. This paper aims to compare some intonation phenomena between Korean, French and English. In this paper I will refer to ToBI (the Tone and Break Indices) which is a prosodic transcription model proposed originally by Pierrehumbert (1980) as a description tool. In the first part, I will summarize different ToBI systems, namely, K-ToBI (Korean ToBI), F-ToBI (French ToBI) and ToBI itself (English ToBI) in order to compare the differences of three languages within prosody. In the second part, I will analyze some tokens registered by Korean, French and American in different languages to show the difficulties of learning other languages and to find the prosodic cues to pronounce correctly other languages. The point of comparison in this study is the Accentual Phrase (AP) in Korean and in French and the intermediate phrase (ip) in English, which I will call ' subject phrase ' in this study for convenience.

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적외선 열화상을 이용한 수전설비 온라인 감시 (On-Line Monitoring of Power Apparatus with Infrared Thermography)

  • 임용배;정승천
    • 한국전기전자재료학회:학술대회논문집
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    • 한국전기전자재료학회 2004년도 하계학술대회 논문집 Vol.5 No.1
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    • pp.441-444
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    • 2004
  • Each electrical apparatus radiates various infrared as the condition of surface and load current. Because heat distribution of the apparatus changes as the condition, it is able to analyze the condition of the apparatus by using the distribution. However, methods having been used to measure the heat distribution cannot compare normal condition with abnormal, and the apparatus has diagnosed by intuition. This paper deal with a program that is able to analyze changed temperature distribution. The program is to analyze temperatures on pixels in selected region of interest or position and is able momently and logically to analyze condition of the apparatus. The results are able to apply to a on-line monitoring system.

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Moment 법에 의한 간편한 안테나 해석 프로그램 구현 (Study out Analyze antenna simply by Moment method)

  • 권소현;강승택;김형석
    • 한국정보통신설비학회:학술대회논문집
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    • 한국정보통신설비학회 2008년도 정보통신설비 학술대회
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    • pp.418-421
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    • 2008
  • This paper presents the program to analyze an antenna for using the Moment Method. The program contains three different functional steps. In the first stage, the pre-processor is based on the Delaunay Triangulation Algorithm. The next stage, the main-processor, can be considered the core process of the program, which solutions are obtaining the linear matrix for using the Moment Method. The final stages, the name of the post-processor, analyze radiation patterns, which results are same with the S-parameters. The results demonstrate satisfactory agreement with the results for using other numerical packages and measurement data. We can confirm that the results of this program compare with the results of common program to analyze for an antenna.

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동일조사에서 비율비교와 관련된 두 가지 흔한 오류 (Some Statistical Issues to Compare the Two Proportions in a Sample Survey)

  • 김현철
    • 응용통계연구
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    • 제16권1호
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    • pp.169-179
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    • 2003
  • 동일조사에서 통계분석 자가 흔히 범하는 오류 두 가지를 제시하였다. 하나는 일반적인 조사에서 발표된 조사결과로부터 두 비율의 비교를 시도할 때 범하기 쉬운 오류이고, 다른 하나는 중립적 응답 항목이 있을 때 통계전문가가 아닌 사람들 가운데에서 범하기 쉬운 잘못이다. 이런 오류들을 제시하고, 통계적으로 정확한 방법과 비교하여 잘못 사용하는 방법들이 갖는 문제들을 보여 줌으로써 교육 자료로 활용할 수 있도록 했다.