• Title/Summary/Keyword: Two-Factor

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Bayesian Test for the Equality of Gamma Means

  • Kang, Sang-Gil
    • Journal of the Korean Data and Information Science Society
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    • v.17 no.4
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    • pp.1413-1425
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    • 2006
  • When X and Y have independent gamma distributions, we develop a Bayesian procedure for testing the equality of two gamma means. The reference prior is derived. Using the derived reference prior, we propose a Bayesian test procedure for the equality of two gamma means using fractional Bayes factor and intrinsic Bayes factor. Simulation study and a real data example are provided.

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Instrinsic Priors for Testing Two Exponential Means with the Fractional Bayes Factor

  • Kim, Seong W.;Kim, Hyunsoo
    • Journal of the Korean Statistical Society
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    • v.29 no.4
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    • pp.395-405
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    • 2000
  • This article addresses the Bayesian hypothesis testing for the comparison of two exponential mans. Conventional Bayes factors with improper non-informative priors are into well defined. The fractional Byes factor(FBF) of O'Hagan(1995) is used to overcome such as difficulty. we derive proper intrinsic priors, whose Bayes factors are asymptotically equivalent to the corresponding FBFs. We demonstrate our results with three examples.

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Bayesian One-Sided Testing for the Ratio of Poisson Means

  • Kang, Sang-Gil;Kim, Dal-Ho;Lee, Woo-Dong
    • 한국데이터정보과학회:학술대회논문집
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    • 2006.04a
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    • pp.295-306
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    • 2006
  • When X and Y have independent Poisson distributions, we develop a Bayesian one-sided testing procedures for the ratio of two Poisson means. We propose the objective Bayesian one-sided testing procedures for the ratio of two Poisson means based on the fractional Bayes factor and the intrinsic Bayes factor. Some real examples are provided.

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Position-type fuzzy controller using the accumulated error scaling factor (누적오차 조정계수를 이용한 위치형 퍼지제어기)

  • 김동하;전해진;최봉열
    • 제어로봇시스템학회:학술대회논문집
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    • 2000.10a
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    • pp.177-177
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    • 2000
  • In this paper, we propose a two-input two-output fuzzy controller to improve the performance of transient response and to eliminate the steady state error. The outputs of this controller are the control input calculated by position-type fuzzy controller and the accumulated error scaling factor. Here, the accumulated error scaling factor is adjusted on-line by fuzzy rules according to the current trend of the controlled process. To show the usefulness of the proposed controller, it is applied to several systems that are difficult to get satisfactory response by conventional PD controllers or PI controllers.

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An Algorithm for the Assignment of the Two-Level Factors on the Table of the Orthogonal Arrays (2수준 직교배열표의 요인 배치 방법)

  • 박명규
    • Journal of Korean Society of Industrial and Systems Engineering
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    • v.10 no.16
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    • pp.81-88
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    • 1987
  • This article develops to determine and to allocate the two level factors at the table of orthogonal arrays. The column numbers of two factors and two-factor interaction can be determined in applying the bit-by-bit EX-OR operation. The assignment of the Two factors and Two factor interaction is attained by USING COMPUTER, IBM PC/AT applying algorithm of EX-OR operation Theory.

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Detection of Ref-1 (Redox factor-1) Interacting Protein Using the Yeast Two-hybrid System (Yeast two-hybrid system을 이용한 Ref-1 (redox factor-1) 결합 단백질의 분리 및 동정)

  • 이수복;김규원;배문경;배명호;정주원;안미영;김영진
    • Journal of Life Science
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    • v.14 no.1
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    • pp.26-31
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    • 2004
  • Redox factor-1 (Ref-1), known as a redox regulator, controls the DNA binding of AP-1 and is activated in HT29 colon cancer cells by hypoxia in vitro. REF-1 also increases tile DNA binding affinity of Hypoxia-inducible Factor-lalpha$ (HIF-lalpha$), HIF-like Factor (HLF) and early growth response-1 (Egr-1) which induce expression of the genes involved in angiogenesis, so that we speculate that REF-1 may play a role in hypoxia-induced angiogenesis. In this research we tried to detect novel proteins interacting with REF-1 using Yeast two-hybrid system using full-length REF-1 cDNA as bait. As result of such screening we detected 3 positive clones. DNA sequencing and GeneBank search revealed that one of the clones contained the same sequences as M.musculus cDNA for tioredoxin.

Association between Genetic Variation in the Human Factor Ⅶ Gene and Essential Hypertension in Korean Population

  • Shin, Jung-Hee;Kang, Byung-Yong;Lee, Kyung-Ho;Lee, Chung-Choo;Kim, Ki-Tae
    • Environmental Mutagens and Carcinogens
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    • v.21 no.2
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    • pp.106-112
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    • 2001
  • In view of the effect of factor Ⅶ as a risk factor for essential hypertension, we investigated the length (I/D) polymorphism at position 323 promoter region and exon 8-Msp I RFLP of the human factor Ⅶ gene in the Korean patients with essential hypertension and normal controls. There were no significant differences in the allele, genotype and haplotype frequencies of these polymorphisms between normotensive and essential hypertensive subjects. The significant linkage disequilibrium was however, detected between two polymorphic sites. The Msp I RFLP and I/D polymorphism were also significantly associated with plasma triglyceride (TG) levels. Therefore, our results suggest that the significant association between two genetic variations in the human factor Ⅶ gene and plasma TG level may reflect the potential role of human factor Ⅶ gene as one of the genetic components for cardiovascular risk.

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Confirmatory Factor Analysis of the Environmental Health Engagement Profile (환경적 건강 관여 측정도구의 확인적 요인 분석)

  • Kim, Hyun-Kyoung
    • Korean Parent-Child Health Journal
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    • v.17 no.1
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    • pp.37-45
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    • 2014
  • Purpose: This study aimed to review measurements of environmental health behavior and assess the construct validity of Environmental Health Engagement Profile (EHEP) through confirmatory factor analysis. Methods: The literature review was performed for selection of measurements. Confirmatory factor analysis with AMOS 19.0 was used for validation of EHEP. Results: The model fitness was not appropriate in the one-factor model; $x^2=91.11$ (df=5, p<.001), Comparative Fit Index (CFI)=8.19, Non Normed Fit Index (NNFI)=6.39, and Root Mean Square Error of Approximation (RMSEA)=0.20. The model fitness was appropriate in the two-factor model; $x^2=3.19$ (df=1, p=.074), CFI=9.95, NNFI= 9.71, RMSEA=0.07. A modification of scale was found to be the most suitable for use in the investigation of environmental health behavior. Conclusion: This study confirms that a two-factor model underlies the concept of environmental health behavior. The review of measurements can help nurses and researchers to assess the environmental health behaviors.

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The Effect of Two Circular Holes Arrangement on the Stress Concentration Factor in a Semi-infinite Plate (양무한평판의 두 원공비렬이 응력집중에 미치는 영향)

  • 오세욱;박영철;김준영
    • Journal of Ocean Engineering and Technology
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    • v.4 no.1
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    • pp.110-119
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    • 1990
  • This study is concerned about the stress concentration factor measurement by photoelastic method, for the case of two circular holes arrangement in 3mm semi-infinite plate under tensile load, the ratio of those two circular holes diameter, the ratio of distance apart from circular holes to breadth and the two holes arrangement angle with loading direction were varied. Besides, the measured stress concentration by photoelastic method around one circular hole was compared with that by strain-gage method.

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Mental Stress and Stress Factors of Female Workers (여성근로자 정신스트레스와 스트레스 부하요인에 관한 연구)

  • Ahn, Min Seon
    • Korean Journal of Occupational Health Nursing
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    • v.8 no.2
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    • pp.141-155
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    • 1999
  • For the purpose of disclosing the mental health status as well as its stress factors of female workers in industry, a questionaire survey was carried out on 283 female workers, namely. 134 of a service industry(department store) in seoul and 149 of a manufacturing industry(food) in Kyunggi-do district from 24 to 29 January, 1994. The result were as follows : 1. The mean scores of poor mental health indicator showed no significant difference between service industry and manufacturing industry, while the mean scores of good mental health indicator showed a significant difference between those two industries. 2. The mean scores of work stress as social stress factors showed a significant difference between service industry and manufacturing industry. However, no significant difference was observed between the mean scores of personal stress factor between those two industries. 3. In general, the work stress factor was more significantly contributed by marital status, while the social stress as well as the personal stress factor were contributed more by monthly income. 4. The major contributing factor to the poor mental health was the personal stress factor in general, followed by the work stress factor. However, the weight of these two stress factors was reversed according to the type of industries.

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