In order to study the influence of the torsional mode, bending mode and umbrella mode of the wheelsets on the vehicle curvepassingperformance, the vehicle-track system dynamics models were established, in which, the wheelsets structures were considered as rigidbody and flexible body respectively.The curve-passing performance of the vehicle was asse
Multi-Band Compact MIMO Antenna for New Generations of Mobile Applications & IoT
In this paper, the aim is to cover LTE, band by presenting a new design of multi-input / multi-output radiators an acceptable radiation pattern and gain.The design process in this research is a bipolar radiator with a physical size of 1.6 × 40 × 40 mm3, when the port number one is excited, the frequency bands are 0.78-1.07, 2.01-2.67, 3
Postcranial heterochrony, modularity, integration and disparity in the prenatal ossification in bats (Chiroptera)
Abstract Background Self-powered flight is one of the most energy-intensive types of locomotion found in vertebrates.It is also associated with a range of extreme morpho-physiological adaptations that evolved independently in three different vertebrate groups.Considering that development acts as a bridge between the genotype and phenotype on which