• 제목/요약/키워드: Q-techniques

검색결과 334건 처리시간 0.022초

Comparative Study on Statistical Packages for using Multivariate Q-technique

  • Choi, Yong-Seok;Moon, Hee-jung
    • Communications for Statistical Applications and Methods
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    • 제10권2호
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    • pp.433-443
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    • 2003
  • In this study, we provide a comparison of multivariate Q-techniques in the up-to-date versions of SAS, SPSS, Minitab and S-plus well known to those who study statistics. We can analyze data through the direct Input method(command) in SAS and use of menu method in SPSS, Minitab and S-plus. The analysis performance method is chosen by the high frequency of use. Widely we compare with each Q-techniques form according to input data, input option, statistical chart and statistical output.

도시설계기법 유출저감 효과분석을 위한 FFC2Q와 XP-SWMM 비교 연구 (FFC2Q and XP-SWMM Comparative Study to Analyze Runoff Reduction by Urban Design Techniques)

  • Song, Juil;Lee, ByoungJae;Yoo, Jaehwan
    • 한국재난정보학회 논문집
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    • 제11권1호
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    • pp.107-119
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    • 2015
  • 인적 물적 자원이 고밀화된 도시에서 발생하는 홍수 또는 침수는 도시의 기능을 마비시키거나 많은 인명피해를 발생시킬 수 있다. 본 연구에서는 유역을 재해발생지점, 재해직접영향권, 재해간접영향권으로 구분하고 각 구역별로 적합한 재해저감 도시설계기법을 적용하여 피해를 최소화하고자 한다. 이를 위해서는 우선적으로 도시설계기법을 적용하여 시뮬레이션하고 정량적으로 효과를 검증할 필요가 있다. 따라서 본 논문에서는 국내에서 사용되고 있는 도시유출모형을 활용하여 재해저감 도시설계기법의 효과 분석을 위한 적용성을 검토하였다. 검토결과로써 효과분석을 위한 FFC2Q모형, XP-SWMM과 같은 집중형 모형의 한계점을 제시하였다.

The Limits of Bivariate Q-Q Plots Based on Matching that Minimizes a Distance

  • Kim, Nam-Hyun
    • Communications for Statistical Applications and Methods
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    • 제6권2호
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    • pp.645-658
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    • 1999
  • One of the most popular graphical techniques for goodness of fit problems is the quantile-quantile plot(Q-Q plot) Easton and McCulloch(1990) suggested a way of generalizing Q-Q plots to multivariate cases bases on finding a matching between the points of the data set whose shape is being examined and a reference sample. in this paper we investigated the asymptotic behavior of the generalized Q-Q plot for bivariate cases. As a result we concluded that the standard univariate Q-Q plot and the generalized Q-Q plot have the same limit if two variables are independent.

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가변길이 그램의 역리스트 생성을 이용한 효율적인 유사 문자열 검색 기법 (An Efficient String Similarity Search Technique based on Generating Inverted Lists of Variable-Length Grams)

  • 김종익
    • 정보과학회 논문지
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    • 제43권11호
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    • pp.1275-1280
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    • 2016
  • 유사 문자열 검색을 위해 기존의 기법들은 우선 후보 문자열 집합을 생성한 후에 후보 문자열을 검증하는 방법을 사용한다. 이때, 유사 문자열 검색의 성능을 결정짓는 가장 중요한 요소는 후보 생성 방법이다. 기존의 기법들은 질의 문자열로부터 고정길이 q-그램들을 선택하고, 선택된 q-그램에 해당하는 역리스트를 이용해 후보 문자열을 생성한다. 본 논문에서는 질의 문자열 내의 가변길이 그램들을 사용하여 후보 문자열을 생성할 수 있는 기법과 질의 문자열로부터 최적의 가변길이 그램들의 조합을 선택하는 동적 프로그래밍 알고리즘을 제안한다. 실험을 통해 제안하는 기법이 기존의 기법들 보다 유사 문자열 검색의 성능을 향상시킴을 보인다.

Classification 및 Ordination 방법에 의한 융문산 삼림의 식물군집 구조분석 (Analysis on the Structure of Plant Community in Mt. Yongmun by Classification and Ordination Techniques)

  • 이경재
    • Journal of Plant Biology
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    • 제33권3호
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    • pp.173-182
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    • 1990
  • To investigate the structure of the plant community structure of Mt. Yongmun in Kyonggi-do, fifty-four plots were set up by the clumped sampling method. The classification by TWINSPAN and DCA ordination were applied to the study area in order to classify them into several groups based on woody plant and environmental variables. By both techniques, the plant community were divided into two groups by the aspect. the dominant species of south aspect were Pinus densiflora, Quercus aliena, Q. mongolica, Carpinus laxiflora and of north aspect were Q. ongolica, Fraxinus rhynchophylla. The successional trends of tree species in south aspect seem to be from P. densiflora through Q. serrata, Q. aliena, A. mongolica to C. laxiflora. As a result of the analysis for the relationship between the stand scores of DCA and environmental variables, they had a tendency to increase significantly from the P. densiflora and Q. mongolica community to C. laxiflora and F. rhynchophylla community that was the soil moisture, the amount of soil humus and soil pH.

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Q.F.D.를 이용한 기능 분석에 관한 연구 (A study on the Function Analysis, using the Q.F.D.)

  • 박노국
    • 산업경영시스템학회지
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    • 제14권24호
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    • pp.23-30
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    • 1991
  • This study aimed at the improvement of the conventional methods of VE Function Analysis, the most important phase of VE process, through Quality Function Development. The use of Function Requirement Coefficients in Quality Function Development makes the Function Development more objective, and it was found that VE techniques, when used in combination with QC techniques. Improve the value of product considerably.

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단기 생산공정에 활용되는 SPC 기법의 비교 연구 (Comparison of Statistical Process Control Techniques for Short Production Run)

  • 서순근;이성재;김병태
    • 품질경영학회지
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    • 제28권2호
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    • pp.70-88
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    • 2000
  • Short runs where it is neither possible nor practical to obtain sufficient subgroups to estimate accurately the control limit are common in modem business environments. In this study, the standardized control chart, Hillier's exact method, Q chart, EWMA(Exponentially Weighted Moving Average) chart for Q statistics and EWMA chart for mean and absolute deviation among many SPC(Statistical Process Control) techniques for short runs have been reviewed and advantages and disadvantages of these techniques are discussed. The simulation experiments to compare performances of these variable charts for process mean and variations are conducted for combination of subgroup size, scale and timing of shifts of process mean an/or standard deviation. Based upon simulation results, some guidelines for practitioners to choose short run SPC techniques are recommended.

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Q-Q 플롯에 의한 Agreement의 통계적 분석 (Statistical Analysis of Agreement by Q-Q plot)

  • 이제영;이성원;이재우
    • Journal of the Korean Data and Information Science Society
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    • 제9권1호
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    • pp.11-18
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    • 1998
  • 의학에서 새로운 치유방법으로 예전의 방법을 대신하여 교체 사용할 수 있는가 하는 물음에 대하여, 기존에는 상관계수(r)를 이용하여 결정하였으나 최근에는 Bland와 Altman식의 Agreement를 이용하여 결정한다. 본 논문에서는 이들이 표현되는 특성을 Q-Q플롯을 이용하여 살펴보고 이것을 Bland와 Altman식의 방법을 응용하여 그래프를 통한 Agreement에 대하여 분석을 하고자 한다.

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Deletion or Duplication Syndromes of Chromosome 22: Review

  • Kyung Ran Jun
    • Journal of Interdisciplinary Genomics
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    • 제6권1호
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    • pp.1-5
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    • 2024
  • Chromosome 22 is an acrocentric chromosome containing 500-600 genes, representing 1.5%-2% of the total DNA in cells. It was the first human chromosome to be fully sequenced by the Human Genome Project. Several syndromes involving the partial deletion or duplication of chromosome 22 are well descibed, including 22q11.2 deletion syndrome, 22q11.2 duplication syndrome, 22q11.2 distal deletion syndrome, Phelan-McDermid syndrome caused by a 22q13 deletion or pathogenic variant in SHANK3, and cat-eye syndrome caused by a 22 pter-q11 duplication. This review aims to provide concise information on the clinical characteristics of these syndromes. In particular, the similarities in features among these syndromes, genetic basis, and standard detection techniques are described, providing guidance for diagnosis and genetic counselling.