• 제목/요약/키워드: Study Trend

검색결과 12,436건 처리시간 0.039초

가스터빈 엔진의 손상 진단을 위한 퍼지 경향감시 방법에 관한 연구 (A Study on Fuzzy Trend Monitoring Method for Fault Detection of Gas Turbine Engine)

  • 공창덕;고성희;기자영;오성환;김지현;고한영
    • 한국추진공학회지
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    • 제12권6호
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    • pp.1-6
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    • 2008
  • 본 연구에서는 계측 데이터의 성능 추이를 분석하여 가스터빈 엔진의 결함 여부를 탐지하기 위한 퍼지 경향감시 방법을 제안하였다. 제안된 경향감시 방법은 연료유량, 배기가스 온도, 로터회전수, 진동수와 같은 중요 엔진 파라미터를 모니터링 하여 시간에 따른 변화를 분석하여 엔진 상태를 진단하는 것이다. 이를 위해 먼저 선형회귀분석을 통해 엔진 상태 변화를 수식화하고 퍼지 로직을 통해 진단 결과를 분석하여 예측되는 손상 원인을 제시한다.

당대(唐代) 예술(藝術)이 반영(反映)된 현대(現代)패션에 관(關)한 연구(硏究) - 1998년(年)부터 2000년(年) Collection을 중심(中心)으로 - (A Study on the Modern Fashion Reflected Art of the Tang Dynasty)

  • 간호섭;서윤희
    • 패션비즈니스
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    • 제4권4호
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    • pp.55-70
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    • 2000
  • The purpose of this thesis is to suggest the new orientalism fashion through the comprehensive approach to analyze the art of the Tang dynasty, China. Tang dynasty has high culture, economy, polity and art. Also the character of Tang's culture is very international. Therefore that point is coincide with fusion culture in the early 2000's. As a method of accomplishing this research, the documents and fashion magazines related to the art and fashion were examined. Through analyzing the art in the Tang's related to fusion culture, reach a conclusion that the modern fashion has four characters. 1. The cause of high culture and economy, the trend of fashion was decorative 2. The cause of realism, the trend of fashion were modern and simple. 3. The cause of rhythmical line, the trend of fashion had natural drape. 4. The cause of globalism, the trend of fashion mixed east with west This research keep going for showing new orientalism and coinciding with 21th century's trend.

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신문기사를 통해 본 남성 외모 관리 경향 (The Trend of Newspaper Articles for Male Appearance Management)

  • 박수진;박길순
    • 복식문화연구
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    • 제16권3호
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    • pp.547-558
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    • 2008
  • This study aims on observing the social recognition and its aspects for men taking care of their outer appearances at current point where men are rapidly rising as the main consumer in the beauty industry while their interest for outer appearances are increasing. Therefore, we observed the overall trend and changes in social recognition for male looks by analyzing the contents of newspaper articles from 1990 to 2005 that play the critical role of spreading new information trend while reflecting the interest of people of a certain era. As a result, articles related to male looks were divided into fashion, hair, skin and cosmetics, physical image, cosmetic surgery, trend related to male looks, and male oriented stores and sites, and among them, articles related to fashion and skin took up the highest ratio. Especially articles related to the trend took up the largest ratio as it reflects the properties of two industries launching new products. Moreover, articles related to male looks tended to increase generally according to timely changes, and rapidly increased especially since 2000.

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2017년 재난적 의료비 경험률 현황 및 추이 (Catastrophic Health Expenditure and Trend of South Korea in 2017)

  • 김윤경;최동우;박은철
    • 보건행정학회지
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    • 제29권1호
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    • pp.86-89
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    • 2019
  • Catastrophic health expenditure refers to spending more than a certain level of household's income on healthcare expenditure. The aim of this study was to investigate the proportion of households that experienced catastrophic health expenditure between 2006 and 2017 with the National Survey of Tax and Benefit (NaSTaB) and between 2011 to 2016 using Households Income and Expenditure Survey (HIES) data. The results of the NaSTaB showed 2.16% of households experienced the catastrophic health expenditure in 2017. In trend analysis, the NaSTaB revealed a statistically significant decreasing trend (annual percentage change [APC] = -2.01, p<0.001) in the proportion of households with the catastrophic health expenditure. On the other hand, the results of the HIES showed 2.92% of households experienced the catastrophic health expenditure in 2016. Also, there was a slightly increasing trend (APC= 1.43, p<0.001). In subgroup analysis, groups with lower income levels were likely to experience catastrophic health expenditure. In conclusion, further public support system is needed to lower experience these healthcare expenditures and monitor the low income group.

2020년 재난적 의료비 경험률 현황 및 추이 (Catastrophic Health Expenditure and Trend of South Korea in 2020)

  • 정성훈;강수현;박은철
    • 보건행정학회지
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    • 제32권1호
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    • pp.107-112
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    • 2022
  • Catastrophic healthcare expenditure refers to out-of-pocket spending for healthcare exceeding a certain proportion of a household's income and can lead to subsequent impoverishment. The aim of this study was to investigate the proportion of South Korean households that experienced catastrophic healthcare expenditure between 2006 and 2020 using available data from the National Survey of Tax and Benefit (NaSTaB), Korea Health Panel (KHP), and Households Income and Expenditure Survey (HIES). Trend test was used to analyze the proportion of household with catastrophic healthcare expenditure. In the NaSTaB 2020 data, households who experienced catastrophic health expenditure was 1.73%. Trend analysis was significant with the decreasing trend (annual percentage change [APC], -5.55; p<0.0001) in the proportion of households with the catastrophic health expenditure. Also, in the 2018 KHP and the 2016 HIES, households who experienced catastrophic health expenditure was 2.21% and 2.92% respectively. In contrast, the trend was significantly increased in the KHP (APC, 0.55; p<0.0001) and the HIES (APC, 1.43; p<0.0001). Therefore, the findings suggest the need to strengthen public health care financial support and monitor catastrophic healthcare expenditures, especially for low-income group.

머신러닝 기반 시계열 예측 시스템 비교 및 최적 예측 시스템 구현 (Comparison and Implementation of Optimal Time Series Prediction Systems Using Machine Learning)

  • 한용희;고방원
    • 한국정보전자통신기술학회논문지
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    • 제17권4호
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    • pp.183-189
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    • 2024
  • 본 연구는 시계열 데이터를 효과적으로 예측하기 위해 데이터를 Seasonal-Trend Decomposition on Loess 을 통해 추세, 계절성, 잔차 성분으로 분해한 후 추세 성분에는 ARIMA, 계절성 성분에는 Fourier Series Regression, 잔차 성분에는 XGBoost를 적용하는 하이브리드 예측 모델을 제안하였다. 또한, ARIMA, XGBoost, LSTM, EMD-ARIMA, CEEMDAN-LSTM 모델을 포함한 성능 비교 실험을 수행하여 각 모델의 예측 성능을 평가하였다. 실험 결과, 제안된 하이브리드 모델은 MAPE, MAAPE, RMSE 지표에서 각각 3.8%, 3.5%, 0.35로 가장 좋은 평가 지표 값을 보이며 기존의 단일 모델보다 우수한 성능을 보였다.

디지털 이미지 색채분석을 이용한 욕실공간 색채배색에 관한 연구 (A Study on the Color Harmony Scheme of the Bathroom Based On Digital Color Image Processing)

  • 정현원;이현수
    • 한국실내디자인학회논문집
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    • 제38호
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    • pp.217-224
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    • 2003
  • The purpose of this study is to analyze the recent trend color of bathroom based on analysis result of digital color image processing, to analyze the emotional color of that, and to suggest the harmony color combination for the bathroom. It leads to the two final results. That is, the main color of bathroom image is recognized as three color classifications such as YR-Y, Y-GY, PB-P, 2) from the point of emotional aspect, the trend color of the bathroom can be classified into four image categories: 'modern', 'mild', 'elegant', 'natural'. Finally, under these categories, this paper propose 12 color harmony schema which can be applied to color in, especially bathroom Interior design.

디젤 주기관의 시운전 결과 및 성능 변화 추이에 관한 연구 (A Study on the Trial Results and Performance Trend of Diesel Main Engine)

  • 조권회;이동훈;손민수
    • 한국마린엔지니어링학회:학술대회논문집
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    • 한국마린엔지니어링학회 2005년도 후기학술대회논문집
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    • pp.73-74
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    • 2005
  • Shipping company and operators have to manage well to keep shipping schedules without problems in main engine. Specially operators have to operate main engine within the limit of operation point, and adjust related parameters to be operated safely and continuously. Also operators have ability to analyze fouling condition of hull through comparing data gotten from P-V curve and performance results of new building ships in trial with service ships. In this study, not only compared main engine performance results in shop trial and sea trial, but also investigated performance trend in accordance with the time elapsed for the service ship's diesel engine. They were confirmed as follows. First, shop trial load is higher than sea trial load but ship's speed is satisfied with owner's contract speed. Second as time goes by, load of service ship increases steadily and other parameters related with main engine shows variable change depend on main engine load increasing.

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뉴욕 Hip 레스토랑의 인테리어디자인 특성에 관한 연구 (A Study on Interior Design Characteristics of Hip Restaurants in New York)

  • 민찬홍
    • 한국가구학회지
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    • 제19권5호
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    • pp.387-402
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    • 2008
  • Today's restaurant is the space not just for eating, but enjoying the mood, communication space for social life, and leading trend. Therefore interior design is concerned with one of the most important role for creating unique atmosphere of restaurants. This study is aimed to analyze how to interior design elements affect the improvement of New York hip restaurant reputation, focusing on the importance of the establishment of unique trend. Through the case studies of New York hip restaurants, it is suggested that interior design is composed to not only significant different element, but also common design concept. It is mainly divided by 5 categories which is the Fusion mixed with eastern culture throughout the vision of the western, the New Baroque redefined tradition and modern thought, the Modern Classic created by importance of concise style and beauty of material, the High Concept used with new materials and technologies, and the Naturalism focused on spirit from nature and eco. Recently New York hip restaurant through the corporation work with star chef and star designer is developed to provide the enjoyable and anticipated spaces with strong theme and entertainments.

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부산지역 노인시장의 다식 인지도 및 다식 선호도에 관한 연구 (The Study of Perception and Preferences on Dasik of the Old People in Busan)

  • 김정숙;정진우;정연국
    • 한국조리학회지
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    • 제11권3호
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    • pp.138-150
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    • 2005
  • This study has been subjected to improve the accessibility of the public to Dasik and chance of merchandising it by investigating the statistical characteristics, perceptive trend and preferences on Dasik of the old people in Busan. Briefly, the results of positive analysis are as follows. The perceptive trend of Dasik was influenced by the distinction of sex, an occupation educational condition and the average monthly income. And finally, the preferences of Dasik was influenced by the perceptive trend. According to the results, some merchandising strategies of Dasik were suggested.

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