Resource scheduling problems with incomplete information and environment changes have been studied for decades. The vast majority of the research efforts in the scheduling problems under uncertainty assume a central authority with a global objective of maximizing the resource usage. In real-life scheduling problems, in addition to the dynamic environment, sometimes conflicting interests of diff...

In this paper, we consider nonparametric identification and estimation of first-price auction models when N∗, the number of potential bidders, is unknown to the researcher. Exploiting results from the recent econometric literature on models with misclassification error, we develop a nonparametric procedure for recovering the distribution of bids conditional on unobserved N∗. Monte Carlo results...

This paper extends the existing fully parametric Bayesian literature on stochastic volatility to allow for more general return distributions. Instead of specifying a particular distribution for the return innovations, nonparametric Bayesian methods are used to flexibly model the distribution’s skewness and kurtosis while volatility dynamics follow a parametric structure. Our Bayesian approach p...

1 2 This paper presents results from the estimation of a multivariate unobserved components model of cyclical activity. The model is motivated by a desire to let the data speak as much as possible, and hence to avoid imposing ad hoc and unjustifiable assumptions about trends and cycles. Estimated over the period 1970:1 to 1999:3 via the Kalman filter and maximum likelihood, the model identifies...

Cognitive reserve (CR) has been proposed as a latent variable that can account for the frequent discrepancy between an individual's underlying level of brain pathology and their observed clinical outcome. A possible behavioral manifestation of CR is best strategy choice. Older adults have been shown to choose sub-optimal strategies for performing various tasks. The present study attempted to in...

objective: basal fsh levels reflect ovarian response and more formed embryos. we investigated a reliable fsh range to retrieve more oocytes and embryos. materials and methods: two hundred patients in art cycles underwent this study from apr 2007 to sep 2008. patients were divided in three groups based on value of fsh: group a≤8 iu/ml, 8 iu/ml < group b≤10 iu/ml, group c>10 iu/ml and results of ...