one of the problems in the ground-based circular synthetic aperture radar is the dependence of the azimuth resolution to the antenna rotation radius and operational limitation of increasing it. to enhance the image quality in azimuth, model-based image formation through three methods: matched filter, inverse filter and optimum filter is suggested and analyzed. for the purpose of comparison, thr...

slope stability analysis is an enduring research topic in the engineering and academic sectors. accurate prediction of the factor of safety (fos) of slopes, their stability, and their performance is not an easy task. in this work, the adaptive neuro-fuzzy inference system (anfis) was utilized to build an estimation model for the prediction of fos. three anfis models were implemented including g...

abstract: aqueous enzymatic extraction of oil from pistacia khinjuk was performed using cellulase. the central composite design was used to optimize the parameters that are significant to the process. the influence of three regressors on the percentage of oil recovery from seed was evaluated using second-order polynomial multiple regression model. analysis of variance showed a high coefficient ...

in this research, a novel method to decrease micro-residual stresses of fibrous composites by adding carbon nanotubes (cnts) is proposed in detail. the negative coefficient of thermal expansion and the high young’s modulus of cnts can be utilized to counterbalance the process induced residual stresses in composites. to this end, first, the effects of adding cnts to the matrix of fibrous composi...

An investigation of the drying of spherical food particles was performed, using peas as the model material. In the development of a mathematical model for drying curves, moisture diffusion was modelled using Fick’s second law for mass transfer. The resulting partial differential equation was solved using a forward-time central-space finite difference approximation, with the assumption of variab...

The work is devoted to the construction of a model turbulent exchange in shallow water bodies using results expeditionary measurements. Kalman filter algorithm was used field data. An for calculating coefficient vertical exchange, which decisively affects heat and gas coastal system, has been developed, made it possible significantly reduce effect f noise experimental data used. As result numer...

Methods for combining 2×2 contingency tables from multiple studies are reviewed and new methods are proposed. Methods for combining 2×2 contingency tables from multiple studies are presented in the context of three different statistical models: the constant coefficient model, the varying coefficient model, and the random coefficient model. The constant coefficient confidence intervals have unac...

abstract use of empirical competition models is one of approaches in integrated weed management strategies. in order to investigation of this approach in simulation of yield loss of bean (phaseolus vulgari. l.) caused by jimson weed (datura stramonium l.) interference, an experiment was conducted in national bean research station, in khomein, in 2007. the experiment design was randomized comple...

In [M2], the author has defined an automorphism τ of a vertex operator algebra (VOA) of order 2 using a sub VOA isomorphic to Ising model L(12 , 0). We here define an automorphism of VOA of order 3 by using a sub VOA isomorphic to a direct sum of 3-state Potts models L(45 , 0) and an its module L( 4 5 , 3). If V is the moonshine VOA V ♮, the defined automorphism is a 3A element of the monster s...