• Title/Summary/Keyword: test procedure

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The Effect of Cloze Procedure with a Cartoon on Academic Interests and Reading Achievements (만화 텍스트 빈칸 메우기 전략을 활용한 읽기 학습이 흥미 및 학업성취에 미치는 영향)

  • Choe, In-Hui;Kim, Sung-il
    • (The) Korean Journal of Educational Psychology
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    • v.22 no.1
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    • pp.215-234
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    • 2008
  • This study investigates the effect of cloze procedure using either cartoons or texts on academic interests and reading achievements. Three equivalent classes were selected from an 1st grade in elementary school in terms of academic interests and reading achievements. While two experimental conditions used cloze procedure either with cartoons or texts during 15 lessons, the control condition used a traditional reading procedure. The results indicated that cloze procedure with cartoons enhanced academic interests in reading only for low achievement participants. Cloze procedure condition also outperformed the control condition on both immediate and delayed dictation test. In particular, cloze procedure with cartoons were quite effective for low achievement participants. Lastly, both types of cloze procedure facilitated overall comprehension test score, specifically inferential understanding test score but not factual understanding test score. Based on these findings, the types of text and learning strategy to improve academic interests and reading-related achievements were discussed.

A note on the sample size determination of sequential and multistage procedures

  • Choi, Kiheon
    • Journal of the Korean Data and Information Science Society
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    • v.23 no.6
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    • pp.1279-1287
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    • 2012
  • We particularly emphasized how to determine the number of replications with sequential and multistage procedures. So, the t-test is used to achieve some predetermined level of accuracy efficiently with loss function in the case of normal, chi-squared, an exponential distributions. We provided that the relevance of procedures are sequential procedure, two-stage procedure, modified two-stage procedure, three-stage procedure and accelerated sequential procedure. Monte Carlo simulation is carried out to obtain the stopping sample size that minimizes the risk.

Multi -Stage Triaxial Test under Constant Confining Pressure (일정구속압력 다단계삼축압축시험)

  • Kim, Sang-Gyu;Kim, Hyeon-Tae;Kim, Ho-Il
    • Geotechnical Engineering
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    • v.9 no.2
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    • pp.27-40
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    • 1993
  • This paper proposes a new procedure carrying out a series of consolidated-undrained triaxial tests with a specimen. In this procedure high confining pressure applied to the specimen keeps constant during the test and each stage of consolidation can be controlled by partial drainage. With this procedure the test time is remarkably reduced by performing a series of triaxial tests with a single specimen. In order to verify the appliesbility of the procedure, standard triaxial compression tests and conventional multi -stage triaxial testy are performed for both undisturbed and disturbed samples and the results are compared with those of the proposed procedure. The comparison shows that strength parameters determined by the proposed procedure are well agreed with those of the other tests and thus it can be said that the procedure is very effective and practical in determining strength parameters.

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Design of Accelerated Test for Reliability Assurance of SHAFT Assembly (SHAFT 어셈블리 신뢰성 보증을 위한 가속시험의 설계)

  • 김준홍;오근태;김명수
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.23 no.61
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    • pp.75-87
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    • 2000
  • This paper proposes a procedure for designing an accelerated test using SMAT(Stress, (failure) Mechanism and Test) model describing the relation among stress, failure mode/mechanism and test method. In SMAT model the stresses to be applied are derived from the environmental factor analysis, the relative importance of those stresses can be estimated using AHP(Analytic Hierarchy Process) and failure mode/mechanism and test method are derived from the fields failure information and FMEA(Failure Mode and Effect Analysis). By applying the procedure we can make a selection of major factors to cause the failure of assembly and design the accelerated test using DOE(Design of Experiments) The procedure is illustrated with an qualification test case study of washing machine shaft assembly in "A" electric appliance company.

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Rating of A Plate Girder Bridge through Load Test (강거더교의 재하시험을 통한 내하력평가)

  • Juhn, Gui Hyun
    • Journal of the Korea institute for structural maintenance and inspection
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    • v.2 no.1
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    • pp.89-97
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    • 1998
  • This paper presents the results of the load test performed on a steel plate girder bridge and suggests the procedure of bridge rating through the load test. In general the girder bridge resist the loads as a complex three-dimensional structural system. Therefore the test results are analyzed for the longitudinal and the transverse response characteristics. The bending moments based on the beam analysis are compared with the measured values for longitudinal response characteristics. The lateral load distribution characteristics are assessed based on the load test results for transverse response characteristics. Also the rating of the test bridge is performed by using the suggested rating procedure which considers the actual response characteristics of the bridge. The suggested procedure can be used for understanding of actual response characteristics and evaluating load carrying capacity of the steel plate girder bridge.

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Nonparametric Tests for Grouped K-Sample Problem

  • Park, Hyo-Il
    • Communications for Statistical Applications and Methods
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    • v.13 no.2
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    • pp.409-418
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    • 2006
  • We propose a nonparametric test procedure for the K-sample problem with grouped data. We construct the test statistics using the scores derived for the linear model based on likelihood ratio principle and obtain asymptotic distribution. Also we illustrate our procedure with an example. Finally we discuss some concluding remarks.

Preliminary Study for the Reliability Assurance on Results and Procedure of the Out-pile Mechanical Characterization Test for a Fuel Assembly; Lateral Vibration Test(I) (핵연료 집합체 노외성능시험의 절차와 결과에 대한 신뢰성확보를 위한 예비고찰; 횡방향 진동특성시험(I))

  • Lee, Kang-Hee;Yoon, Kyung-Ho;Kim, Hyung-Kyu
    • Proceedings of the KSME Conference
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    • 2007.05a
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    • pp.1854-1858
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    • 2007
  • The reliability assurance with respect to the test procedure and results of the out-pile mechanical performance test for the nuclear fuel assembly is an essential task to assure the test quality and to get a permission for fuel loading into the commercial reactor core. For the case of vibration test, which is carried out to obtain basic dynamic characteristics of the fuel assembly, proper management and appropriate calibration of instruments and devices used in the test, various efforts to minimize the possible error during the test and signal acquisition process are needed. Additionally, the deep understanding both of the theoretical assumption and simplification cation for the signal processing/modal analysis and of the functions of the devices used in the test were highly required. Finally, to verify the test result to represent the accurate natural characteristics of the structure, the proper correlation analysis between the theoretical and experimental method has to be carried out. In this study, the overall procedure and result of lateral vibration test for the fuel assembly's mechanical characterization were briefly introduced. A series of measures to assure and improve the reliability of the vibration test were discussed.

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A Conformance Test Procedure for the Enterprise JavaBeans (컴포넌트 소프트웨어를 위한 적합성 검증 방법)

  • Joo, Un-Gi;Kim, Joong-Bae
    • IE interfaces
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    • v.17 no.2
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    • pp.149-157
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    • 2004
  • This paper considers a conformity testing problem on EJB(Enterprise JavaBeans). The EJB architecture is a component architecture for the development and deployment of component-based distributed business applications. The objective is to find an optimal test sequence for the conformity test between the EJB specification and an implemented one. For the test sequence, we formulate the problem as a rural Chinese postman tour one and use a linear programming formulation. Based upon the formulations, we suggest a conformance test procedure and show its efficiency by applying the procedure to the CMP(Container- Managed persistency) entity bean of the EJB.

Limitations and improvement of the in situ measurements of ground thermal conductivity in Korea (국내 지중열전도도 측정 방법의 한계 및 개선 방향)

  • Shim, Byoung Ohan
    • 한국신재생에너지학회:학술대회논문집
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    • 2011.05a
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    • pp.195.2-195.2
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    • 2011
  • The borehole heat exchanger of Geothermal Heat Pump (GHP) system should be sustainable and cost effective for long term operation. To guaranty the performance of the system thermal Response Tests (TRTs) with simple recommended procedures have been applied in many countries. Korea government developed a standard TRT procedure in order to control the quality on GHP projects. In the TRT procedure interpretation method has a rule that data set has to be interpreted by the line source model(LSM). The LSM employes some assumptions that surrounding medium is homogeneous and the line source is infinite and constant heat flux, however real ground condition is unisotropic and heterogeneous, and showing regional or local ground water flows in many cases. We need to develope improved evaluation models to estimate accurate ground thermal conductivity with respect to geological and influence of ground water because current TRT standard test procedure has limitations to be applied for every locations and system. This study surveyed the uncertainty of the thermal parameters from the interpretation method considering different evaluation period. The interpretation of 208 TRT data sets represents limitations of LSM application that some obtained ground thermal conductivities are statistically unstable and convergence time of ground thermal conductivity over test period shows trends responding the length of test period. This evaluation study will be helpful to provide some effective procedure for the thermal parameter estimation and to complement current TRT standard procedure.

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On the Study for the Simultaneous Test

  • Park, Hyo-Il
    • Communications for Statistical Applications and Methods
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    • v.20 no.4
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    • pp.241-246
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    • 2013
  • In this study, we propose a nonparametric simultaneous test procedure for the location translation and scale parameters. We consider the Wilcoxon rank sum test for the location translation parameter and the Mood test for the scale parameter with the quadratic and maximal types of combining functions. Then we derive the limiting null distributions of the combining functions. We illustrate our procedure with an example and compare efficiency by obtaining the empirical powers through a simulation study. Finally, we discuss some interesting features related to the nonparametric simultaneous tests.