• 제목/요약/키워드: Modified Test Method

검색결과 1,208건 처리시간 0.031초

폴리머 시멘트 모르타르의 연소특성 평가 (The Combustion Character of Polymer Modified Cement Mortar)

  • 박동천;오광석;김효열;오상균;강병희
    • 한국건축시공학회:학술대회논문집
    • /
    • 한국건축시공학회 2008년도 추계 학술논문 발표대회
    • /
    • pp.63-66
    • /
    • 2008
  • Not only mechanical properties, bonding properties, electro chemical properties, etc. but also fire safety is required in patch repair materials such as polymer modified cement mortar (PCM) which are used to deteriorated reinforced concrete structure. Unfortunately, it is very difficult to choice the appropriate repair materials because there are not enough information about fire safety properties of PCM. In this study, The combustion characters of PCM were evaluated through the heat release rate test and non-combustibility test. The pyrogenicity test uses the cone calorimeter based on the oxygen consumption method. The non-combustibility test is from the temperature change inside the furnace during the test. The effect of the types of polymer and polymer content were evaluated from the series of test. The results are like followings. 1) The higher the W/C of PCM, the lower the gross calorific value and heat generation rate in the heat release rate test. The amount of heat generation of PCM is like the order of VVA, EVA, and SBR in this study. 2) Some materials such as E45-100, E50-100, E60-100, S50-50, and S50-100 were estimated as not appropriate building materials in the non combustibility test.

  • PDF

전력계통에서의 수정고속분할 추정법과 계통분할에 의한 계산적 장웅추정에 관한 연구 (Hierarchical State Estimation in Power System by Modified Fast Decoupled State Estimation Method and System Decomposition)

  • 김준현;이종범
    • 대한전기학회논문지
    • /
    • 제34권5호
    • /
    • pp.201-209
    • /
    • 1985
  • This paper describes a method for the state estimation by a modified fast decoupled estimation method and system decomposition. The state values are gained by using the weighted least square estimation method, fast decoupled estimation method, and modified fast decoupled estimation method. The estimated values of each method were compared about effectiveness of state values, respectively. This paper investigated the effects of impedance of well-condition or ill-condition into lines. The characteristics of state estimation were gained through hierarchical state estimation. Each method was applied to three model power systems, and, the results of test for the proposed method are given.

  • PDF

진동대시험에 근거한 댐의 내진설계시 해석 방법의 비교 (The Comparision of Analysis Methods in dynamic Design of Dam based on Shaking Table tests)

  • 황성춘;오병현
    • 한국소음진동공학회:학술대회논문집
    • /
    • 한국소음진동공학회 2005년도 춘계학술대회논문집
    • /
    • pp.732-737
    • /
    • 2005
  • This paper performed pseudo static analysis and dynamic analysis for CFRD and evaluated reliability with the results of Shaking Table Test. The Seismic coefficient method, modified seismic coefficient method, Newmark method of Pseudo static analysis and frequency domain response analysis, time domain history analysis of dynamic analysis were used. The analysis results were differ between analysis method, but the trends of acceleration and displacement were good agreement with the results of shaking table test.

  • PDF

항균성물질(抗菌性物質) 감수성시험(感受性試驗)의 시간단축(時間短縮)과 임상적응용(臨床的應用) (A Drug Sensitivity Test for Shortening of Detection Time)

  • 김교준;허민도;이명환
    • 대한수의학회지
    • /
    • 제23권1호
    • /
    • pp.123-128
    • /
    • 1983
  • This study was conducted to evaluate the modified drug sensitivity test for the shortening of detection time and clinical application. The results obtained were summarized as follows. 1. Inhibitory zone in 6 strains of Staphylococcus and Escherichia coli tested to sensitivity teat were reached at 100% between 2 and 6 hours. 2. The sensitivity test of Staphylococcus A, B and E. coli No. 2, No. 3 to antibacterial ointment drugs were strong positive(+++), but Staphylococcus A. A. and E. coli No. 1 were mild resistant(+). 3. The sensitivity test of Staphylococcus A. B and E. coli No. 2, No. 3 to antibacterial injection drugs in 6 hours after treatment were strong positive(+++), and Staphylococcus A. A. and E. coli No. 1 were moderate positive(++). 4. This modified method was detected 86% degree of sensitive between 7 to 12 hours after treatment. 5. We think this modified method was more practical compare to other methods.

  • PDF

연직차수벽에서 필터케익을 고려한 순간 변위시험 해석방법 (Slug Test Analysis in Vertical Cutoff Walls with Consideration of Filter Cake)

  • 웽테바오;이철호;최항석
    • 한국지반공학회:학술대회논문집
    • /
    • 한국지반공학회 2008년도 춘계 학술발표회 초청강연 및 논문집
    • /
    • pp.220-228
    • /
    • 2008
  • In constructing a slurry trench cutoff wall, a thin but relatively impermeable layer called filter cake can be formed on the excavation surface. The filter cake significantly influences the result of slug test analysis in the cutoff wall. This study is to examine the effect of filter cake on evaluating in situ hydraulic conductivity of the vertical cutoff wall along with slug test analyses. The numerical program Slug_3D was modified to take filter cake into account in the slug test simulation. With consideration of filter cake, the type curve method and the modified line-fitting method were used to reanalyze the case study taken from a landfill site. The previous results achieved by Choi and Daniel (2006b) without consideration of filter cake have been compared with the results in this study. The considerable difference between the two results shows the necessity of considering the filter cake in practice.

  • PDF

Testing Hypothesis for the Logistic Model with Estimated Parameters : Modified Tables of Cirticla Values for K-S Type Statistic

  • Hwang, Chung-Sun
    • Journal of the Korean Statistical Society
    • /
    • 제13권1호
    • /
    • pp.48-56
    • /
    • 1984
  • This paper considers one-sample and two-sample test for the logistic function by means of Kolmororov-Smirnov type statistics. The standard tables used for the Kolmogorov-Smirnov test are valid only when the function is completely specified; but they are not valid if the parameters of function are estimated from the sample. This note presents modified tables for the Kolmogorov-Sminov type staistic. These tables can be used to test the hypothesis that a sample comes from a logistic function when shape parameter $(\alpha)$ and location parameter $(\beta)$ must be estimated from the sample by the method of maximum likelihood. Monte Carlo method is employed to calculate the criticla values of the test. The tables of the critical values are provided.

  • PDF

차이값 추출 및 장면 전환 검출에 의한 승강기에서 흡연 추출 (Smoking Detection in Elevator Using Difference Value Extraction and Scene Change Detection)

  • 신성윤;김창호;이현창
    • 한국정보통신학회:학술대회논문집
    • /
    • 한국정보통신학회 2013년도 추계학술대회
    • /
    • pp.250-251
    • /
    • 2013
  • 본 논문에서는 이러한 범죄 행위인 흡연을 엘리베이터 내에서 행하는 범죄자를 추출하고자 한다. 추출 방법은 변형된 컬러-$X^2$-test를 이용하여 차이값을 추출하고, 이를 정규화 한다. 다음으로, 4-단계의 장면 전환 검출 알고리즘을 이용하여 연속적인 프레임들에서 장면 전환이 발생한 지점을 찾아낸다. 마지막으로, 비디오에 저장된 대량의 영상에서 흡연 영상의 검색 및 추출을 위한 방법을 제시한다.

  • PDF

엉덩정강근막띠의 길이 평가를 위한 세 가지 측정방법들의 신뢰도 비교 (Reliability of Three Methods for Measuring Length of Iliotibial Tract)

  • 김문환;윤성준;원종혁
    • 한국전문물리치료학회지
    • /
    • 제21권3호
    • /
    • pp.20-27
    • /
    • 2014
  • The purpose of this study was to compare the intra-rater and inter-rater reliability of three methods for measuring iliotibial tract length in 40 knees of 20 subjects. The measurements were performed by two examiners and one assistant. The length of the iliotibial tract was measured using three methods: the first used a modified Ober test with an inclinometer, the second used a modified Ober test with a marker, and the third used active adduction test with a marker in the supine position. Each examiner used the three methods in two sessions. For the first method, the inclinometer value was recorded manually. For the second and third methods, Image J analysis software was used to analyze the photographs taken. The intra-rater and inter-rater reliability of the measured value was assessed by means of intra-class correlation coefficients [ICC (3,1)] and the standard error of measurement. The intra-rater reliabilities of the three methods were excellent (ICC=.97, .95, and .94, respectively), and the inter-rater reliabilities of the first and second methods were fair to good (ICC=.64 and .65, respectively). The inter-rater reliability of the third method was excellent (ICC=.88). Our results suggest that the active adduction test is an objective and qualitative measurement method for measuring iliotibial tract length. We recommend that the active adduction test be used for measuring iliotibial tract length in the clinical setting.

여분의 관성센서 시스템을 위한 순차적 고장 검출 및 분리기법

  • 김정용;조현철;김상원;노웅래
    • 항공우주기술
    • /
    • 제3권1호
    • /
    • pp.179-187
    • /
    • 2004
  • 본 논문에서는 여분의 관성센서 시스템의 고장 검출 및 분리를 위한 Modified SPRT 기법의 문제점을 분석하였고, Modified SPRT 기법의 문제점들을 해결한 Advanced SPRT 기법을 제안하였다. 관성센서 시스템을 대상으로 한 Modified SPRT 기법의 문제점은 패러티 벡터에 포함된 관성센서 오차 요인들과 패러티 벡터 요소들 간의 상관관계 영향에 의해 발생한다. 관성센서 오차 요인을 제거하기 위해 two-stage Kalman filter를 이용한 보상된 패러티 벡터를 제안하였고 패러티 요소들 간의 상관관계 영향을 줄이기 위해 제어된 패러티 벡터를 제안하였다. 그리고 제안된 두 패러티 벡터를 이용하여 Advanced SPRT 기법을 설계하였다. 여분의 관성센서 시스템을 대상으로 한 Advances SPRT 기법의 성능은 시뮬레이션을 통해 확인하였다.

  • PDF

대규모 집적회로 설계를 위한 무고정 부분 스캔 테스트 방법 (No-Holding Partial Scan Test Mmethod for Large VLSI Designs)

  • 노현철;이동호
    • 전자공학회논문지C
    • /
    • 제35C권3호
    • /
    • pp.1-15
    • /
    • 1998
  • In this paper, we propose a partial scan test method which can be applied to large VLSI designs. In this method, it is not necessary to hold neither scanned nor unscanned flip-flops during scan in, test application,or scan out. This test method requires almost identical design for testability modification and test wave form when compared to the full scan test method, and the method is applicable to large VLSI chips. The well known FAN algorithm has been modified to devise to sequential ATPG algorithm which is effective for the proposed test method. In addition, a partial scan algorithm which is effective for the proposed test method. In addition, a partial algorithm determined a maximal set of flip-flops which gives high fault coverage when they are unselected. The experimental resutls show that the proposed method allow as large as 20% flip-flops to remain unscanned without much decrease in the full scan fault coverage.

  • PDF