• Title/Summary/Keyword: quantitative test

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Seismic Test of a Full Scale Model of Wood House with Tiled Roof (기와집 실물크기 모델의 지진 실험)

  • Ryu, Hyeuk;Kim, Jae-Kwan;Jeon, Bong-Hee;Kim, Byung-Hyun
    • Proceedings of the Earthquake Engineering Society of Korea Conference
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    • 2003.03a
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    • pp.368-373
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    • 2003
  • To improve the reliability of seismic hazard assessment of historic earthquake, shaking table test of a full scale model of wood house with tiled roof was performed. Full scale model was constructed through rigorous verification process to have quantitative relationship between the intensity of earthquake and damage state. The completed model was mounted on a shaking table and subjected to the dynamic tests. Two kinds of tests were performed: exploratory test and fragility test. The exploratory test was done with low intensity shaking. In the fragility test, the behavior of the model was carefully monitored while increasing the shaking intensity. The construction details of the model are provided and test procedures are reported. Finally important test results are presented and their implications are discussed.

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Seismic Test of a 1/2 Scale Model of Wood House with Thatched Roof (초가집 1/2 축소 모델의 지진 실험)

  • Ryu, Hyeuk;Kim, Jae-Kwan;Huh, Young-Chul;Jeon, Bong-Hee
    • Proceedings of the Earthquake Engineering Society of Korea Conference
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    • 2003.09a
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    • pp.247-252
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    • 2003
  • To improve the reliability of seismic hazard assessment of historic earthquake, shaking table test of a 1/2 scale model of wood house with thatched roof was peformed. Scaled model was constructed through rigorous verification process to have quantitative relationship between the intensity of earthquake and damage state. The completed model was mounted on a shaking table and subjected to the dynamic tests. Two kinds of tests were performed: exploratory test and fragility test. The exploratory test was done with low intensity shaking. In the fragility test, the behavior of the model was carefully monitored while increasing the shaking intensity. The construction details of the model are provided and test procedures are reported. Finally important test results are presented and their implications are discussed.

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Determination of Significance Threshold for Detecting QTL in Pigs (돼지의 QTL 검색을 위한 유의적 임계수준(Threshold) 결정)

  • Lee, H.K.;Jeon, G.J.
    • Journal of Animal Science and Technology
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    • v.44 no.1
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    • pp.31-38
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    • 2002
  • Interval mapping using microsatellite markers was employed to detect quantitative trait loci (QTL) in the experimental cross between Berkshire and Yorkshire pigs. In order to derive critical values (CV) for test statistics for declaring significance of QTL, permutation test (PT) of Churchill and Doerge method(1994) and the analytical method(LK) of Lander and Kruglyak(1995) were used by each trait and chromosome. 525 $F_2$ progeny phenotypes of five traits(carcass weight, loin eye area, marbling score, cholesterol content, last back fat thickness) and genotypes of 125 markers covering the genome were used. Data were analyzed by line cross regression interval mapping with an F-test every by 1cM. PT CV were based on 10,000 permutations. CV at genome-wise test were 10.5 for LK and ranged from 8.1 to 8.3 for PT, depending on the trait. CV, differed substantially between methods, led to different numbers of quantitative trait loci (QTL) to be detected. PT results in the least stringent CV compared at the same % level.

A Serological Test for Syphilis among Prostitutes by VDRL Slide Test (VDRL Slide Test에 의한 접대부의 매독혈청검사 성적)

  • 김영의;김경준
    • Journal of Environmental Health Sciences
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    • v.1 no.1
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    • pp.18-20
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    • 1974
  • A Serological test for Syphilis by VDRL Slide tests were made to find the degree of treponemal infection. For this study sera were collected from 5, 312 Prostitutes of Seoul, Inchun, Euijungbu, Yangzoo, Pajoo and Pyungtaig from November 27, to December 7, 1972 and were examined on the following items. 1. VDRL Slide Qualitative test. 2. VDRL Slide Quantitative test. As the results of this study the following Conclusions were obtained. 1) This test were obtained average reactive 5.92% for 5, 312 prostitutes in Seoul 7.87% for 254 prostitutes, in Iuchun 6.77% for 354 prostitutes, in Euijungbu 6.62% for 740 prostitutes, in Yangjoo 5.82% for 1, 958 prostitutes, in Pajoo 6.08% for 937 prostitutes and in Pyungtaig 4.82% for 1, 069 prostitutes respectively 2) The highest Reagin titer was 1: 32 serum dilution.

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Evaluation of Material Properties of Concrete Harbour Facilities Using Nondestructive Testing Methods (비파괴시험에 의한 콘크리트 항만시설물의 주요 물성치 평가)

  • Yi, Jin-Hak;Han, Sang-Hun;Park, Woo-Sun
    • Journal of Korean Society of Coastal and Ocean Engineers
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    • v.23 no.1
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    • pp.1-10
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    • 2011
  • Recently harbor remodeling projects are seriously considered to enhance the loading and unloading capability of old container terminals and to make decrepit ports as eco-friendly harbor and waterfront spaces in many countries. In such a case, quantitative and qualitative evaluations on concrete harbor facilities are mandatory to determine the current structural integrity condition of aged materials. Once the remodeling project is determined to be carried out, the reusability of individual structural members and facilities including caissons, cell-blocks, and tetra-pods need to be decided based on the simple and economic visual inspection and/or nondestructive testing. In this study, the systematic quantitative evaluation procedure for determining the structural integrity condition and the reusability is studied based the nondestructive testing and evaluation methods. Conventional methods including Schmidt hammer test and ultrasonicpulse velocity methods and elastic wave based methods including impact echo test and surface wave test are applied to the old harbor facilities in five different sites. The compressive tests are also carried out to determine the elastic modulus and compressive strength of concrete materials.

Study on the validation methods of calibration considering correlations (상관관계를 반영한 신용등급 계량화 검정기법 연구)

  • Kim, Enn-Na;Ha, Jeong-Cheol
    • Journal of the Korean Data and Information Science Society
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    • v.21 no.3
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    • pp.407-417
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    • 2010
  • In Basel II compliance, internal rating systems are allowed for banks to enhance the self control and the validation of the system are getting more important. The validation methods are composed of qualitative test and quantitative test, three basic standards of which are discriminatory power, stability and calibration. The aim of this article is to review the quantitative tests for calibration and find a new method for it. These methods for discrimination between forecasted PD and observed PD include binomial test, chi square test, Brier score, traffic lights approach, normal test and extended traffic lights approach. We introduce a modified extended traffic lights approach considering asset correlations.

Antibacterial Activities of Honey Measured With Different Test Methods (시험 방법에 따른 벌꿀의 항균 특성)

  • Jin Sik Cho;Ki Hwan Kim;Jeong Min Lee;Geum Na Hong;Min Joo Choi
    • Journal of Naturopathy
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    • v.13 no.2
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    • pp.62-70
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    • 2024
  • Background: The antibacterial activity of honey are influenced by the testing method, however little is known about the differences between testing methods. Objective: The aim is to evaluate the antibacterial activities of honey according to the test method. Methods: The antibacterial activity was compared and evaluated according to the dilution concentration of honey using three quantitative test methods (Minimum Inhibition Concentration test: MIC test, Zone Diameter of Inhibition test: ZDI test or Halo Test, and ASTM E2315 Time-Kill Assay) for natural honey samples. Results: In MIC Test, it was confirmed that the growth of both E. coli and S. aureus was inhibited at 25% diluted honey. In ZDI Test, no inhibition zone was observed from the original honey solution for either E. coli or S. aureus. In the Time-Kill assay against E. coli strains, an antibacterial effect of more than 3 log reduction (99.9% reduction) was observed at 50% diluted honey concentration, and a log reduction of < 0.3 (approximately 50% reduction or less) was observed from 6.25% diluted honey. In the Time-Kill assay against S. aureus strains, a 0.5 log reduction (68.4% reduction) was observed at 50% diluted honey concentration, and a log reduction of < 0.3 (approximately 50% reduction or less) was observed from 25% diluted honey. Conclusion: The antibacterial activities of honey showed significant differences depending on the test method. In order to utilize the antibacterial effect of honey, it is necessary to establish a standardized quantitative antibacterial test technique.

Comparison of Edge Detection using Linear Rank Tests in Images (영상에서 선형순위검정법을 이용한 에지검출 비교)

  • Lim Dong-Hoon
    • Journal of the Korea Society of Computer and Information
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    • v.10 no.6 s.38
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    • pp.17-26
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    • 2005
  • In this paper we propose three nonparametric tests such as Wilcoxon test, Median test and Van der Waerden test, based on linear rank statistics for detecting edges in images. The methods used herein are based on detecting changes in gray-levels obtained using an edge-height parameter between two sub-regions in a 5$\times$5 window We compare and analysis the performance of three statistical edge detectors in terms of qualitative measures with the edge maps and objective, quantitative measures.

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An Investigation of Cognitive and Metacognitive Strategy Use in EFL Reading Comprehension Test Performance: Focused on Trait Strategy Use vs. State Strategy Use

  • Yong, Kyoung-Hwa
    • English Language & Literature Teaching
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    • v.15 no.3
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    • pp.249-282
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    • 2009
  • This study reports on the use of the trait and state cognitive/metacognitive strategy use and the difference of the trait/state strategy use according to students' proficiency level. First of all, for checking up the trait strategy use, 119 first-grade male students in a high school completed the questionnaire on strategies which they thought they used during a reading test. Secondly, to find out their state strategy use, students took a fifteen-item reading comprehension test, followed by filling out questionnaires on cognitive and metacognitive strategies used in the test. This study employed quantitative data analysis. The results suggested that (1) the cognitive and metacognitive strategy use in the trait and state conditions are used the most by the high proficiency group and they are correlated respectively; (2) these strategies are used with statistically significant difference according to students' proficiency level, especially to the lower level students. The highly successful group uses the cognitive and metacognitive strategy in the actual test situation more than the lower proficient group; there is no difference in trait and state strategy use.

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Review of Somato Sensory Evoke Potential Test (체성감각유발전위검사에 대한 고찰)

  • Kim Myung-Chul;Kim Jin-Sang
    • The Journal of Korean Physical Therapy
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    • v.14 no.4
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    • pp.64-74
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    • 2002
  • The SSEP(SomatoSensory Evoke Potentials) test is a valid and repeatable technique which correlates with clinically assessed joint position & vibration sense, skin touch & pressure sense. Also SSEP study is a simple and quantitative test, and has been used to evaluate the sensoty system along the somatosensory pathway from peripheral sensory receptor to the cortex. The ascending pathway of SSEP has been know to be posterior column-lemniscal pathway, but not without controversy. There are two kind of test mathods : one of test is median nerve SSEP and other test is posterior tibial nerve SSEP. Recently, SSEP used to performed to evaluate the usefulness of dermatomal SSEP(D-SSEP) and segmental SSEP(5-SSEP) for the diagnosis of lumbasacral radiculopathy, and it can be measure of ingual ahd palatine evoked potentials & indicator of medullary function useful for the diagnosis of brain death.

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