• Title/Summary/Keyword: multiple test

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On Multiple Comparisons of Randomized Growth Curve Model

  • Shim, Kyu-Bark;Cho, Tae-Kyoung
    • 한국데이터정보과학회:학술대회논문집
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    • 2001.10a
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    • pp.67-75
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    • 2001
  • A completely randomized growth curve model was defined by Zerbe(1979). We propose the fully significant difference procedure for multiple comparisons of completely randomized growth curve model. The standard F test is useful tool to multiple comparisons of the completely randomized growth curve model. The proposed method is applied to experimental data.

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Test Scheme for Multiple Train Operation of K-AGT System (한국형 경량전철 다중편성시험방안)

  • Cho, Bong-Kwan;Hwang, Hyeon-Chyeol;Ryu, Sang-Hwan;Cho, Hong-Sik
    • Proceedings of the KSR Conference
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    • 2008.06a
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    • pp.684-690
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    • 2008
  • LRT System Application Project is performed for the purpose of technical advancement and stabilization of K-AGT system from the viewpoint of practical use and commercialization. For those purpose, the performance test and evaluation procedure for signaling system have been developed, including the scheme of verifying the performance and function of signaling system under driverless multiple train operation environment. In this paper, multiple train operation scheme in K-AGT test line is presented. Test schemes for maintaining the safety distance between trains, operation scenario considering shunting and turning of train, and dia operation schemes in test line are reviewed while researching test vehicle features, route condition and running pattern. Additional equipments for testing each scheme are also reviewed.

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Characteristic Graph를 利用한 組合論理回路의 故障診斷

  • 林寅七 = In-Chil Lim;李亮熙
    • Communications of the Korean Institute of Information Scientists and Engineers
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    • v.5 no.1
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    • pp.42-49
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    • 1987
  • This paper describes test-pattern generation and it;s sequence for fan out-free Combinational logic network with multiple faults. The method for detecting multiple faults, in systematic way, is established by using characteristic graphs. This method is applied even in the case of fan out-reconvergent combinational logic networks. In this case, the network is decomposed into a set of fan out-free sybnetworks so as to use the characteristic graphs, and minimal test patterns are generated seperately. The each test set is combined and the test pattern for fan out-reconvergent networks are derived. According to corresponding characteristic graph, additional test patterns to detect multiple faults are simply derived.

A Multiple Unit Roots Test Based on Least Squares Estimator

  • Shin, Key-Il
    • Journal of the Korean Statistical Society
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    • v.28 no.1
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    • pp.45-55
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    • 1999
  • Knowing the number of unit roots is important in the analysis of k-dimensional multivariate autoregressive process. In this paper we suggest simple multiple unit roots test statistics based on least squares estimator for the multivariate AR(1) process in which some eigenvalues are one and the rest are less than one in magnitude. The empirical distributions are tabulated for suggested test statistics. We have small Monte-Calro studies to compare the powers of the test statistics suggested by Johansen(1988) and in this paper.

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Constitutive Model of Tendon Responses to Multiple Cyclic Demands(I) -Experimental Analysis-

  • Chun, Keyoung-Jin;Robert P. Hubbard
    • Journal of Mechanical Science and Technology
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    • v.15 no.7
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    • pp.1002-1012
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    • 2001
  • The work reported here is an extensive study of tendon response to multiple cyclic tests including 3% constant peak strain level test (A-type test), 3% constant peak strain level test with two rest periods (B-type test), and 3∼4% different peak strain level test (C-type test). A sufficient number of specimens were tested at each type of the test to statistically evaluate many changes in response during testing and differences in response between each type of the test. In cyclic tests, there were decreses (relaxations) in the peak stresses and hysteresis, increases in the slack strains, and during lower peak strain level (3%) cyclic block after higher peak strain level (4%) cyclic block in the C-type tests. Considering the results of this study and those of the other study of multiple cyclic tests with rest periods by Hubbard and Chun, 1985, recovery phenomena during the rest periods occurred predominantly at the beginning of the rest periods. Consistently in both studies, the effects of rest periods were small and transient compared to the effects of the cyclic extensions. The recovery with cycles at lower peak strain level (3%) after higher peak strain level (4%) in the C-type test has not been previously documented. This recovery seems to be a natural phenomena in tissue behavior so that collagenous structures recover during periods of decreased demand.

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Temperature Analysis of Each Coolant Level by a Multiple Comparison in Turning Process (다중비교를 이용한 선삭가공시 절삭유량에 따른 온도변화분석)

  • Park, Tae-Jun;Yang, Seung-Han;Lee, Yeong-Mun;Kim, Hui-Sul
    • Journal of the Korean Society for Precision Engineering
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    • v.18 no.12
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    • pp.110-115
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    • 2001
  • In this paper, a multiple comparison was proposed to minimize the amount of coolant. And new coolant level, called "low level", was suggested to show usefulness of multiple comparison for experiments. The amount of this levee is about 1/4 of conventional coolant amount-called "high level", and dry cutting is called "none level". Using these coolant levels, the cutting temperatures of each coolant level in turning process were analyzed by analysis of variance(ANOYA)-test and a multiple comparison. As the result of ANOVA-test, we have just known that the average of temperature of each coolant level is not equal. However by Tukey's HSD, one of multiple comparison. it was analyzed that the average of temperature of low level is similar to that of high levee and different from that of none level.erent from that of none level.

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Multiple Testing in Genomic Sequences Using Hamming Distance

  • Kang, Moonsu
    • Communications for Statistical Applications and Methods
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    • v.19 no.6
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    • pp.899-904
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    • 2012
  • High-dimensional categorical data models with small sample sizes have not been used extensively in genomic sequences that involve count (or discrete) or purely qualitative responses. A basic task is to identify differentially expressed genes (or positions) among a number of genes. It requires an appropriate test statistics and a corresponding multiple testing procedure so that a multivariate analysis of variance should not be feasible. A family wise error rate(FWER) is not appropriate to test thousands of genes simultaneously in a multiple testing procedure. False discovery rate(FDR) is better than FWER in multiple testing problems. The data from the 2002-2003 SARS epidemic shows that a conventional FDR procedure and a proposed test statistic based on a pseudo-marginal approach with Hamming distance performs better.

Page Type Test for Ordered Alternatives on Multiple Ranked Set Samples.

  • Kim, Dong-Hee;Kim, Young-Cheol;Kim, Hyun-Gee
    • Communications for Statistical Applications and Methods
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    • v.6 no.2
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    • pp.479-486
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    • 1999
  • In this paper we propose the test statistic for ordered alternatives on multiple ranked set samples. Since the proposed test statistic is Page type its asymptotic properties are easily obtained. From the simulation works we calculate the power of test statistic($P_{RSS}$) under the underlying distributions such as uniform normal double exponential logistic and Cauchy distribution.

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Multiple Fault Detection in Combinational Logic Networks (조합논리회로의 다중결함검출)

  • 고경식;김흥수
    • Journal of the Korean Institute of Telematics and Electronics
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    • v.12 no.4
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    • pp.21-27
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    • 1975
  • In this paper, a procedure for deriving of multiple fault detection test sets is presented for fan-out reconvergent combinational logic networks. A fan-out network is decomposed into a set of fan-out free subnetworks by breaking the internal fan-out points, and the minimal detecting test sets for each subnetwork are found separately. And then, the compatible tests amonng each test set are combined maximally into composite tests to generate primary input binary vectors. The technique for generating minimal test experiments which cover all the possible faults is illustrated in detail by examples.

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The Effects of Lesson Using Multiple Intelligences Theory in Technology${\cdot}$Home Economics on Middle School Student's Self-Esteem: Focused on the Resource Management and Environment Unit (다중지능 이론에 기초한 기술가정과 수업이 중학생의 자아존중감에 미치는 효과: 자원의 관리와 환경 단원을 중심으로)

  • Rho, So-Lim;Lee, Hyong-Sil
    • Journal of Korean Home Economics Education Association
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    • v.17 no.2
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    • pp.1-10
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    • 2005
  • The purpose of the study was to examine the effects of the lesson using Multiple Intelligence on self-esteem in the unit of Resources management and environment in Technology${\cdot}$Home Economics of middle school. In this study, the lesson using Multiple Intelligence theory for six hours was developed and applied to a class of 37 students of middle school as an experimental group. Lecture-style lesson was applied to the other class of 37 students as a control group. Significant differences between pre-test and post-test scores of self-esteem were found in the experimental group. Post-test scores of self-esteem were higher than pre-test scores of self-esteem in the experimental group. There were no significant differences between pre-test and post-test scores of self-esteem in the control group. It was found that the lesson using Multiple Intelligence theory was effective in improving self-esteem of middle school students.

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