In this paper we extend the classical decision model under uncertainty to a more general case. We propose an expected utility-uncertainty model and we can make a decision by trading off between a measure of uncertainty and a measure of expected value. As a risk analysis model, the expected utility-uncertainty model can be seen to be reasonable and flexible for states of nature or individuals' preferences. Moreover, the model can explain some decision paradoxes.

This paper is intended to compare the hazard rate estimations from Bayesian approach and maximum likelihood estimate(MLE) method. Hazard rate frequently involves unknown parameters and it is common that those parameters are estimated from observed data by

본 연구는 정상 및 저수태 한우에 rbST를 투여하였을 때 수태 및 분만율에 미치는 영향을 조사하기 위하여 수행하였다. 시험축은 성빈 한우 383두와 임상적으로는 정상이나 3회 이상 수정시켜도 수태가 되지 않는 저수태 한우 79두, 총 462두를 시험에 공시하였다. 실험을 수행하기 위한 시험구 배치는 5개의 처리구, 즉 T1(무처리, 2ml의 생리 식염수), T2(rbST 250mg 수정시 1회 미근부에 투여), T3(rbST 250mg: 수정시 및 수

본 연구에서는 7차 교육과정에서 크게 대두되고 있는 새로운 형태의 교수?학습방법의 한 형태인 e-Learning이 학습자의 파지에 어떠한 영향을 주는지 알아보고자 e-Learning을 이용하여 중학생들이 ‘지각의 물질’ 단원에서 장?단기 파지에 미치는 영향에 대해 알아보았다. 이를 위하여 경상남도 양산시의 중학교 1학년 2개 학급 72명을 대상으로 e-Learning을 활용한 수업 전-후에서 과학 학업 성취도와 e-Learning에 대한 인식을 조사해 본 결과는 다음과 같다. 첫째, e-learning 활용수업은 학습자의 단기파지에 효과를 나타내지 못하였다. 둘째, 장기파지에 미치는 효과는 유의수준 .05에서 유의미한 차이가 있는 것으로 나타났다. 셋째, e-Learning을 활용한 수업이 장기파지에 긍정적인 반응을 하는 것으로 나타났다.

Some distributions have been used for diagnosing the lead time demand distribution in inventory system. In this paper, we describe the negative binomial distribution as a suitable demand distribution for a specific retail inventory management application.

In this paper we extend the classical decision model under uncertainty to a more general case. We propose an expected utility-uncertainty model and we can make a decision by trading off between a measure of uncertainty and a measure of expected value. As a risk analysis model, the expected utility-uncertainty model can be seen to be reasonable and flexible for states of nature or individuals' preferences. Moreover, the model can explain some decision paradoxes.

This paper is intended to develop a Bayesian decision model for the repair of deteriorating system. A non-homogeneous Poisson process with a power law failure intensity function is used to describe the behavior of the deteriorating repairable system. The decision on whether to have minimal repair or imperfect repair should be made on the occurrence of a failure. However, it is difficult to make a reasonable decision due to many uncertainties intrinsic in repair actions. In this paper, prior distributions are used in order to analyze the uncertainties embedded in the decision alternatives. Especially, a prior distribution for imperfect repair with probabilistic reduction in the failure intensity is proposed. In addition, mathematical expressions to calculate the expected prior loss of each repair alternative are proposed.

Some distributions have been used for diagnosing the lead time demand distribution in inventory system. In this paper, we describe the negative binomial distribution as a suitable demand distribution for a specific retail inventory management application. We here assume that customer order sizes are described by the Poisson distribution with the random parameter following a gamma distribution. This implies in turn that the negative binomial distribution is obtained by mixing the mean of the Poisson distribution with a gamma distribution. The purpose of this paper is to give an interpretation of the negative binomial demand process by considering the sources of variability in the unknown Poisson parameter. Such variability comes from the unknown demand rate and the unknown lead time interval.

The study of cornified cell envelope has been used to investigate the differentiation factors and to advance oral carcinogenesis, CE of human oral keratinocytes are in wet condition as saliva containing many proteases, growth factors, and many kinds of bacteria, The analysis of CE in Immortalized human oral keratinocyte(IHOK) derived from normal human oral keratinocyte(NHOK) will be used to study the pathogenesis of oral squamous cell carcinoma, The purpose of this study was to analyze the amino acid component derived from CE of cultured NHOK and IHOK, It will be helpful to study the role of transfected E6/E7 gene in forming CE, and to examine the pathogenesis of oral squamous cell carcinoma, After primry culture of NHOK, IHOK were cultured in KBM bullet kit at 370C under 95% C02 incubator, Growth curve according to calcium concentration, cornified cell envelope measurement(CEM), and protein chemistry for amino acid component of CE were done(Mena :f::SD) , respectively. The obtained results were as follows, lHOK showed small areas of stratification, more compact, with irregular border and tightly apposed cells in 1,2 mM Ca++, Cornified cell envelope exhibited an aggregated group of empty space surrounded by the remained cell membrane, During the terminal differentiation in cultured NHOK and IHOK, insoluble cornified cell envelope formation was increased, CEM of NHOK was about 4 folds than that of lHOK under high calcium, Amino acid component of both groups showed Pro/Glu(SPR) , Gln/Glu(lnvolucrin) , and Gly(Loricrin) in descending order, From the aboving results, ít was suggested that when the terminal dífferentiation in cultured NHOK and IHOK, major amino acid component of CE in cultured lHOK was the same to that of cultured NHOK, It was thought that E6 and E7 gene should be involved in preventing the differentiation and proliferation of IHOK from making CE,