While influence diagrams have many ad­ vantages as a representation framework for Bayesian decision problems, they have a se­ rious drawback in handling asymmetric de­ cision problems. To be represented in an influence diagram, an asymmetric decision problem must be symmetrized. A consid­ erable amount of unnecessary computation may be involved when a symmetrized influ­ ence diagram is evaluate...

| In this paper, we describe important improvements that were recently introduced in our Discriminative Stochastic Segment Model (DSSM) speech recognizer. We propose a new presegmen-tation algorithm and we optimize the structure of the Multi-Layer Perceptron (MLP) that estimates the phone probabilities. Additionally, we describe a cascade MLP combination technique that relaxes the drawbacks of ...

A system is described that provides robust and real-time focus-of-attention for tracking and segmentation of multicoloured objects. Gaussian mixture models were used to estimate the probability densities of object foreground and scene background colours. Tracking was performed by tting dynamic bounding boxes to image regions of maximum probability. Two scenarios are presented: (1) real-time fac...

In Whiplash PCR WPCR autonomous molecular compu tation is achieved by the recursive self directed polymerase extension of a mixture of DNA hairpins A barrier confronting e cient implementa tion however is a systematic tendency for encoded molecules towards backhybridization a simple form of self inhibition In order to examine this e ect the length distribution of extended strands over the cours...

Blood leukocytes from cattle with bovine ocular squamous cell carcinoma (BOSCC) react with extracts of BOSCC, and blood leukocytes from cattle with cutaneous papillomas react with extracts of papillomas in the erythrocyte rosette (E-rosette) augmentation test. Sera from cattle with BOSCC, with cuta neous papillomas, and with ocular papillomas and sera from lesion-free cattle were tested for the...

Modeling in ecol ogy or epidemiol ogy gener all y opposes tw o classes of models, Equa tion Based Models and Agent Based Models. Mathema tical models all ow predicting the longterm dynamics of the studied systems. How ever, the variability betw een individ uals is difficul t to represen t, wha t makes these more suitable models for larg e and homog eneous popula tions. Mul ti-agent models all o...

Perforin gene (PRF1) mutations have been reported in 20-30% of patients with familial hemophagocytic lymphohistiocytosis (FHL), an immune disorder of infancy and early childhood. Cytotoxic T and natural killer (NK) cell activities are remarkably reduced or ab-sent in FHL patients. We report the first cases of familial hemophagocytic lymphohistiocy-tosis in an Iranian family with two siblings. E...

Lithium has become a metal of enormous interest worldwide. The extensive use recharge-able batteries for range applications pushed rapid growth in demand lithium carbonate. This compound is produced by crystallization, reaction with chloride (in solution) and adding sodium Low sedimentation rates the evaporation pools present problem crystallization process. For this reason, work, mineral sedim...