• 제목/요약/키워드: study of pattern

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모바일 그리드에서 데이터마이닝을 이용한 효율적인 사용자 패턴 연구 (Study of the effective use pattern using Data Mining in a mobile grid)

  • 김휴찬;김미정
    • 디지털산업정보학회논문지
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    • 제9권2호
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    • pp.23-32
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    • 2013
  • The purpose of this study is to make effective mobile grid considered general environment, which can be summarized as irregular mobility, service exploration, data sharing, variety of machines, limit to the battery duration, etc. The data was extracted from the Dartmouth College. We analysed mobile use pattern of a specific group and applied pattern using hybrid method. As a result, we could adjust infra usage effectively and appropriately and cost cutting and increase satisfaction of user. In this study, by applying weighting method based on access time interval, we analysed use pattern added time variation with association rule during users in mobile grid environment. We proposed more stable way to manage patterns in a mobile grid environment that is being used as a hybrid form to process the data value received from the server in real time. Further studies are needed to get appropriate use pattern by group using use patterns of various groups.

R134a 및 Rl23과 비공비 혼합냉매 R134a/R123의 수평관내 이상유동양식에 관한 연구 (A Study on Two-Phase Flow Pattern of Pure Refrigerants R134a and Rl23 and Zeotropic Mixture R134a/R123 in Horizontal Tubular)

  • 임태우;김준효
    • 대한기계학회논문집B
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    • 제27권8호
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    • pp.1033-1041
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    • 2003
  • Two-phase flow pattern data during horizontal in-tube flow boiling are presented for pure and mixed refrigerants of R134a and Rl23, The flow pattern is observed through tubular sight glasses located at inlet and outlet of the test section, which is made of a stainless steel tube, 2m long with 10mm I.D., 1.5mm wall thickness. The obtained results are compared with the available various correlations for flow pattern. The flow pattern map of Hashizume was in good agreement with the present data except the region of low mass velocity. Weisman flow pattern map was also known to satisfactorily predict data for refrigerants in the region of annular flow. In this study, the flow pattern are simply classified into two groups; stratified(including intermittent, stratified and stratified-wavy) flow and annular flow. The transition quality from stratified to annular flow was obtained by modifying the liquid Froude number.

H&M 콜라보레이션에 참여한 패션 디자이너 브랜드의 자체 제품과 콜라보레이션 제품에 활용된 텍스타일 패턴디자인 연구 (A study on the textile pattern design of fashion designers' brands and H&M collaboration collections)

  • 이은옥
    • 복식문화연구
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    • 제21권1호
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    • pp.93-116
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    • 2013
  • This paper explored and compared the textile pattern and motive design of fashion designers' brands and H&M collaboration collections. In particular, this study put it focus on textile pattern design of seven fashion design brands such as Roverto Cavalli and Versace, etc., which were collaborated with H&M. The color, motive type, motive layout, motive expression, and pattern drawing technique were collected from fashion internet sites over the five year period, and then were cross-sectionally examined and compared based on their color, motive type, motive layout, motive expression, and pattern drawing technique of products between fashion designers' brands and H&M collaboration collections. The analyses showed the following results: First, the similar color, motive type, motive layout, motive expression, and pattern were found between fashion designers' brands and H&M collaboration collections, in order to show the perspective texture of products to consumers. Second, H&M collaboration brands demonstrated unique textile design of H&M rather than the trendy design patterns. Finally, the textile design pattern used in H&M collection was more restricted in terms of motive expression technique and chromaticity than that used in fashion designers' brands.

딥러닝을 활용한 실시간 주식거래에서의 매매 빈도 패턴과 예측 시점에 관한 연구: KOSDAQ 시장을 중심으로 (A Study on the Optimal Trading Frequency Pattern and Forecasting Timing in Real Time Stock Trading Using Deep Learning: Focused on KOSDAQ)

  • 송현정;이석준
    • 한국정보시스템학회지:정보시스템연구
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    • 제27권3호
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    • pp.123-140
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    • 2018
  • Purpose The purpose of this study is to explore the optimal trading frequency which is useful for stock price prediction by using deep learning for charting image data. We also want to identify the appropriate time for accurate forecasting of stock price when performing pattern analysis. Design/methodology/approach In order to find the optimal trading frequency patterns and forecast timings, this study is performed as follows. First, stock price data is collected using OpenAPI provided by Daishin Securities, and candle chart images are created by data frequency and forecasting time. Second, the patterns are generated by the charting images and the learning is performed using the CNN. Finally, we find the optimal trading frequency patterns and forecasting timings. Findings According to the experiment results, this study confirmed that when the 10 minute frequency data is judged to be a decline pattern at previous 1 tick, the accuracy of predicting the market frequency pattern at which the market decreasing is 76%, which is determined by the optimal frequency pattern. In addition, we confirmed that forecasting of the sales frequency pattern at previous 1 tick shows higher accuracy than previous 2 tick and 3 tick.

가상착의 시스템을 이용한 팬츠 스타일과 기하학 무늬의 특성에 따른 시각적 효과 (A Visual Effect according to Pants Style and Geometric Pattern - Using a 3D Virtual Garment System -)

  • 박우미
    • 한국의류산업학회지
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    • 제15권4호
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    • pp.504-513
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    • 2013
  • This study evaluates the difference of visual effect according to pant style and geometric pattern. The researcher made 28 stimuli-combination of four pant Stiles (classic, baggy, skinny, and bell-bottom) and seven geometric pattern (large vertical stripe, small vertical stripe, large horizontal stripe, small horizontal stripe, large check, small check, and hound's tooth check). The test involved 96 female college students. The stimuli were made with the i-Designer computer program. The panels tested the computer screen images of all manikins wearing pants. A 7-point scale was used to evaluate each image. For the data analysis, ANOVA and Duncan-test were applied along with an SPSS program. The results of this study are as follows. Three factors (lower-body compensation, abdomen highlight, and length compensation) influenced the visual effect pant styles and geometric patterns. The skinny style and large vertical stripe evaluated positively in elongated height and leg length and a slimmer overall body. It was shown that the vertical stripe pattern was evaluated as more positive than the horizontal stripe pattern in the visual effect; particularly, the results showed distinct aspects in the classic pants style. The mutual influence of the visual effect (according to pants style and geometric pattern) were indicated as two factors of lower-body compensation and length compensation. A more positive visual effects resulted in a higher mutual influence on pant style and geometric pattern.

여고생의 Bodice원형 개발에 관한 연구 (A Study on the Development of a Bodice Basic Pattern for High School Girls)

  • 김미숙;김경희
    • 한국의류학회지
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    • 제24권7호
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    • pp.1004-1014
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    • 2000
  • The purpose of this study was to develop a well-fitting bodice basic pattern for high school irk. Two bodice patterns were first made based on the most recent existing drafting methods and sensory evaluation was done on the patterns by the present researchers Two high school girls possessing standard physical condition tried and evaluated the functionality of the garments made by the two bodice patterns. Based on the results of the evaluation, a new bodice basic pattern was developed. The new bodice basic pattern was drafted by long measurement method. The dimensions of new bodice basic pattern were as follows. Bust circumference=B/2+4cm, Arms hole depth=C.B/2+1.5cm, Back width=B/6+4cm, Front width=B/6+3cm, Back neck width=B/12+0.5cm, Back neck depth=Back neck width/3cm, Front neck width=B/12cm, Front neck depth=B/12+0.5cm. The sensory and functional evaluations were also conducted for the new bodice basic pattern and the two patterns drafted by the existing methods. The new bodice basic pattern showed better fit both visually and functionally than the existing patterns. SPSS package including means, standard deviation and one-sample T-test were used for data analysis.

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친츠 패턴 디자인에 관한 연구 (A Study on Chintz Pattern Design)

  • 김칠순;정희승
    • 복식문화연구
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    • 제11권4호
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    • pp.513-524
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    • 2003
  • The purpose of this study was to trace the development of Chintz pattern design through fashion history, and to focus on its application in modern times with special emphasis on filtered Chintz patterns. Chintz patterns use such motives as tree, animal, bird, and geometrical shapes, etc.. It reached the peak of its popularity with William Morris. His influence continued from the end of the 19th century through to the 20th century. Modern Chintz designs have been modified and diversified in different cultures through time, and such diversification & changes can be easily found in modern fashion. From previous studies and other related sources, we found that Chintz patterns were revived in modern fashion trends with some modification. We also discovered the importance of chintz pattern designs in ethnic and retro trends. Thus in conclusion, this study revealed the significance, flexibility, and lasting popularity of Chintz pattern designs in fashion history.

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프랙탈 패턴에 의한 인테리어 표면디자인 (Interior Surface Design by Fractal Pattern)

  • 김주미
    • 한국실내디자인학회:학술대회논문집
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    • 한국실내디자인학회 2008년도 춘계학술발표대회 논문집
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    • pp.36-38
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    • 2008
  • The purpose of the study is to propose a new surface design concepts within fractal pattern. In this study, I am offering the fractal concepts drawn from science, as a new anchoring point for surface design. Fractal Patterns are generated by transforming a seed slab into a number of constituent elements through fractal operations of rotation, scaling and linear transformations. These elements are bound together as a second generation seed shape which is reiterated according to the same transformations. This process continues for as many generations as desired. In conclusion, this study places a great emphasis on the natural pattern order to the surface generation, which I hope will contribute to generating a number of creative possibilities for interior design.

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용접결함의 형상인식을 위한 특징변수 추출에 관한 연구 (A Study on the Extraction of Feature Variables for the Pattern Recognition of Welding Flaws)

  • 김재열;노병옥;유신;김창현;고명수
    • 한국정밀공학회지
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    • 제19권11호
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    • pp.103-111
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    • 2002
  • In this study, the natural flaws in welding parts are classified using the signal pattern classification method. The storage digital oscilloscope including FFT function and enveloped waveform generator is used and the signal pattern recognition procedure is made up the digital signal processing, feature extraction, feature selection and classifier design. It is composed with and discussed using the distance classifier that is based on euclidean distance the empirical Bayesian classifier. feature extraction is performed using the class-mean scatter criteria. The signal pattern classification method is applied to the signal pattern recognition of natural flaws.

피치 검출과 퍼지화 패턴을 이용한 숫자음 화자 인식에 관한 연구 (A Study on Number sounds Speaker recognition using the Pitch detection and the Fuzzified pattern)

  • 김연숙;김희주;김경재
    • 한국컴퓨터정보학회논문지
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    • 제8권3호
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    • pp.73-79
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    • 2003
  • 본 논문에서는 피치 검출과 퍼지화 패턴 매칭을 포함하는 화자 인식 알고리즘을 제안한다. 음의 개성을 표현하는 피치를 이용한 피치 패턴을 사용하고 음성의 파라미터는 2진화 스펙트럼을 사용한다. 비선형적인 발성 시간에 따른 시간 변동의 폭을 모두 포함할 수 있도록 음성 신호의 애매성을 보완할 수 있는 퍼지의 소속 함수를 이용하여 표준 패턴을 작성하고 퍼지화 패턴 매칭을 이용하여 인식을 수행한다.

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