• Title/Summary/Keyword: Window-effect

검색결과 741건 처리시간 0.023초

시계열 서브시퀀스 매칭의 윈도우 크기 효과 : 정량적 성능 연구 (Window Size Effect on Time-Series Subsequence Matching: A Qualitative Performance Study)

  • 고현길;정인범;김상욱
    • 한국멀티미디어학회:학술대회논문집
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    • 한국멀티미디어학회 2003년도 추계학술발표대회(상)
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    • pp.371-374
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    • 2003
  • 서브시퀀스 매칭은 주어진 질의 시퀀스와 변화의 추세가 유사한 서브시퀀스들을 시계열 데이터베이스로부터 검색하는 연산이다. 본 논문에서는 기존에 제안된 서브시퀀스 매칭 기법인 FRM과 Dual-Match를 대상으로 다양한 실험을 통하여 윈도우 크기 효과를 정량적으로 분석한다. 또한, 이러한 분석 결과를 기반으로 서브시퀀스 매칭 처리의 성능 개선을 위한 향후의 연구 방향을 제시한다.

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아치형 단동 온실의 지붕 환기 구조 (Roof Ventilation Structure for Single Span Greenhouses of Arch Shape)

  • 남상운
    • 한국농공학회:학술대회논문집
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    • 한국농공학회 2001년도 학술발표회 발표논문집
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    • pp.267-270
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    • 2001
  • It is difficult to install a ventilation window on the roof of single span greenhouse of arch shape. Investigation on the roof ventilation structure for those greenhouses was conducted. The effect of roof ventilation was evaluated by comparative experiments between greenhouse installing roof vent and having controlled side vent only. And ventilation efficiency was analyzed by experiments on the opening and closing operation of the roof and side vent.

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오류 보정을 이용한 초점 이미지들로부터의 깊이 추출 (Depth Extraction From Focused Images Using The Error Interpolation)

  • 김진사;노경완;김충원
    • 대한전자공학회:학술대회논문집
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    • 대한전자공학회 1999년도 하계종합학술대회 논문집
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    • pp.627-630
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    • 1999
  • For depth extraction from the focus and recovery the shape, determination of criterion function for focus measure and size of the criterion window are very important. However, Texture, illumination, and magnification have an effect on focus measure. For that reason, depth map has a partial high and low peak. In this paper, we propose a depth extraction method from focused images using the error interpolation. This method is modified the error depth into mean value between two normal depth in order to improve the depth map.

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슈퍼스칼라 프로세서에서 명령 윈도우 크기에 따른 혼합형 값 예측기 (Hybrid Value Predictor in Wide-Issue Superscalar Processor)

  • 전병찬;최규석
    • 한국인터넷방송통신학회논문지
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    • 제9권2호
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    • pp.97-103
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    • 2009
  • 본 논문에서는 슈퍼스칼라에서 윈도우 크기에 따른 명령 페치율에 따라 혼합형 값 예측기의 성능을 평가한다. 일반적으로, 명령의 데이터 의존성은 명령의 페치수에 따라 증가된다. 그러므로, 명령 페치율이 증가할 때 값 예측기의 성능이 높다고 본다. 이러한 성능은 명령 페치 메카니즘인 컬랩싱 버퍼와 트레이스 캐쉬로 연구한다. 실험결과는 명령 윈도우 크기에 따른 명령 페치율 증가와 혼합형에서 non-tc 와 tc을 적용한 IPC와 예측률의 값 예측기의 성능 효과를 평가한다.

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한지(韓紙)가 실내습도조절에 미치는 영향에 관한 실험적 연구 (The Experimental Study on a Effect of Korean Paper (Hanji) on Indoor Humidity Control)

  • 이종원;임정명
    • 설비공학논문집
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    • 제16권6호
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    • pp.599-607
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    • 2004
  • The purpose of this study is to reevaluate the performance of Hanji as an architectural material. Hanji has good things in controlling indoor space comfortably. Particularly, ability of controlling humidity of Hanji affects indoor space comfort and human health. The major focuses of this experimental research are (1) how much of water vapor passes through Hanji, (2) how much of water vapor is absorbed into Hanji. In the first case, indoor humidity is higher than outdoor humidity. In this case, approximately 38 g of water vapor passes through Hanji 1, genarally utilized in window paper (Changhoji), per square meter in one hour. And approximately 4 g of water vapor is absorbed into Hanji 2, genarally utilized in wallpaper, per square meter. In the second case, outdoor humidity is higher than indoor humidity. In this case, Hanji passes water vapor to inner space at first, but when indoor relative humidity reach approximately 66%, although outdoor humidity is higher than indoor humidity, water vapor doesn't pass through Hanji. If Hanji is utilized in window material and wallpaper, indoor space is maintained comfortably without mechanical devices in humidity control.

고속도로 요금소 부스 근무환경 개선을 위한 기류해석 연구 (A Study on Numerical Simulation for the Work Environment Improvement of Highway Tollgate Booth)

  • 김신도
    • 한국대기환경학회지
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    • 제16권2호
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    • pp.129-140
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    • 2000
  • Simulation study has been carried out to analyze the air flow supplying from the heat pump system inside the tollgate booth by using the Phoenix computer simulation program. Through this simulation analysis we can find the problem of present tollgate booth in terms of air flow and recommend an improved model also simulate this model. Final results as follows; It was turned out that the fresh air conditioning is not provided to the worker effectively due to the improper location of inlet and outlet in the present tollgate booth in addition to that the air curtain system applied in the booth lowered air circulation from outside. The improved model was suggested first to increase the air curtain effect by downsizing the window and by installation of the air curtain suction line to reduce the induced outdoor air second to supply the fresh air to the worker directly by relocation of the inlet and outlet of supplying air. With these improved modifications better results have been reached in terms of air flow inside the booth. Next through the air flow simulation of outside booth the contaminated outdoor air has been easuily infiltrating into the booth through the window because of its rectangle shape. Stream like shape of booth has been proposed through the computer simulation as an alternative shape of tollgate booth for a new design.

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CIGS 태양전지의 윈도우 층에 적용되는 ZnO 박막 특성에 관한 온도의 영향 (Effect of Temperature on the Characteristics of ZnO Thin Film Applied to the Window Layer of CIGS Solar Cells)

  • 정경서;권상직;조의식
    • 한국전기전자재료학회논문지
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    • 제26권4호
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    • pp.304-308
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    • 2013
  • For the application to the window layer of $Cu(In,Ga)Se_2$(CIGS) solar cell, zinc oxide(ZnO) thin film was deposited at various temperatures by in-line pulsed DC sputtering. From the structural, optical, and electrical investigation and analysis, it was possible to obtain the lower thickness, the lower resistivity, and the higher transmittance at a higher process temperature. The energy band gap of ZnO was calculated using the transmittance data and was analyzed in terms of the dependency on temperature. From the X-ray diffraction(XRD) results, it was possible to conclude that a dominant peak was found about $34.2{\sim}34.6^{\circ}$(111) and crystallinity was obtained at a temperature above $150^{\circ}C$.

우드세라믹을 첨가한 기능성 한지가 실내습도 조절에 미치는 영향 (Effect of Functional Hanji Using Wood Ceramics on Indoor Humidity Control)

  • 임현아;오승원;강진하
    • 펄프종이기술
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    • 제38권2호
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    • pp.35-42
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    • 2006
  • This study was carried out to develop a new application field of traditional Hanji and obtain the basic data for producing functional Hanji using sawdust ceramics and rice-husk ceramics as an architectural material. The results measuring water vapor permeance and water vapor absorption for using window materials and wallpapers are as follows. Hanji wallpaper has good things in controlling indoor space comfortably. Particularly, ability of controlling humidity of Hanji wallpaper affects indoor space comfort and human health. In the case indoor humidity is higher than outdoor humidity, according to the addition of ceramics, Hanji wallpapers maintain the humidity by retaining water vapor molecules in the pores of ceramics. Thus the Hanji wallpapers with ceramics, in particular rice-husk ceramics, make it superior to non-ceramics Hanji wallpapers in maintaining the humidity indoors.

선박용 창의 차음성능 측정용 충진벽체 설치에 관한 실험적 고찰 (Experimental discussion on the installation of filler wall for sound insulation measurements of shipboard windows)

  • 김상렬;강현주;김현실
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2008년도 춘계학술대회논문집
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    • pp.276-279
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    • 2008
  • In order to measure sound transmission loss (STL) of a shipboard window of small size, a special partition is built into the test opening between two reverberation rooms and the specimen is placed in that partition. For high sound insulation, the filler wall often has multi-layered structure such as double-brick wall or buckhead structure with thick steel plate, absorptive material, and sandwich panels. This paper discusses the installation method of a multi-layered filler wall that consist of gypsum boards, lead plates, and glass wool. The experimental results of various wall structures are introduced. The comparison between the results show that the sound bridge effect plays a significant role in lowering the maximum STL of the filler wall. It is also found that the higher the sound insulation performance of the filler wall is, the more important the franking transmission through other side wall of the test facility is.

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