the aim of this study is to explore the feasibility of setting up a commodities futures market in iran. specifications for the margin requirements, daily price movement limits, the length of expiration intervals, tick sizes and contract size of various potential future contracts are hereby examined. saffron, pistachio and rice emerge as the three suitable iranian agricultural commodities. a new...

The minimum risk equivariant estimator (MRE) of the regression parameter vector β 6 in the linear regression model enjoys the finite-sample optimality property, but its calculation is 7 difficult, with an exception of few special cases. We study some possible approximations of MRE, 8 with distribution of the errors being known or unknown: A finite-sample approximation uses the 9 Hájek–Hoeffding...

In this paper we describe procedures for combining multiple acoustic models, obtained using training corpora from different languages, in order to improve ASR performance in languages for which large amounts of training data are not available. We treat these models as multiple sources of information whose scores are combined in a log-linear model to compute the hypothesis likelihood. The model ...

Modern automatic speech recognition (ASR) systems use statistical models of spoken language. These models are typically learned from corpora comprising many hours of transcribed speech. While a variety of machine learning approaches have been applied to this learning task, the optimal learning strategy is unknown. This thesis focusses upon a relatively recent and successful approach, the applic...

abstract   background: due to the high incidence of breast cancer and the effect of its early diagnosis on decreasing morbidity and mortality, we used the gail model to study breast cancer risk in iranian women.   methods: this study was done in a simple randomized way. participants were 2000 iranian women older than 35 years old. the questionnaire consisted of demographic data such as age, rac...

background: the use of chemicals is essential in education resulting in exposure to these pollutant in a variety of chemical and research laboratories. chemical contaminants in chemical laboratories are in different forms and chemical exposure risk assessment is important for choosing appropriate controls in protecting the health of operators, experts and students. for risk assessment in chemic...

abstract using tobit model, this study investigated factors affecting on crop risk frequency of farmers in the north khorasan province. data was collected through interviewing 120 farmers of north khorasan province in 2008. results showed that age, farm ownership and off farm employment affected frequency of risk negatively. non-agricultural activity, participating in a crop supervisory plan an...