in this research genetic and phenotypic parameters were estimated using linear and threshold models, for reproductive traits, data from 6 large industrial dairy herd of east azerbaijan province collected by agriculture jihad organization during 10 years (2001-2010). best linear unbiased predictions of traits breeding values were estimated using restricted maximum likelihood method by wombat sof...

Computational fluid dynamics (CFD) is a popular tool in the water industry for assessing ultraviolet (UV) reactor performance. However, due to the size of open-channel-type UV reactor systems, the CFD model requires significant computational time. Thus, most evaluations have been conducted using very simplified models. In order to ensure the reliability of this simplified CFD model, precise num...

As smart structures are becoming increasingly ubiquitous in our daily life, the need for efficient modeling electromechanical coupling devices is also rapidly advancing. Smart often made of piezoelectric materials such as lead zirconate titanate (PZT), which exhibits strong nonlinear behavior known hysteresis effect under a large applied electric field. There have been numerous techniques that ...

This paper presents a simplified mathematical model of pumped hydrofoil (PH)—a surfboard elevated above water surface and connected to tandem hydrofoils by strut. The PH is operated rider who stands on the produces swinging up-and-down motions resulting in forward propulsion device. In present paper, description vertical motion reduced linear oscillator excited an oscillating mass coupled with ...