In this study, a deep convolutional neural network based on an improved You only look once version 3 (YOLOv3) is proposed to improve the accuracy and real-time detection of small targets in complex backgrounds when detecting leaky weld studs automotive workpiece. To predict stud locations, prediction layer model increases from three layers four layers. An image pyramid structure obtains feature...

Purebred stud bulls of a related Holstein breed are widely used when breeding domestic black-and-white cattle breeds. Results’ evaluation using these by offspring quality is relevant and has practical significance. Stud the Vis Back Ideal 1013415 line were evaluated in one farms Moscow region. As result, it was found that all had high value. Bulls Trubach 174 - A 1 ; Nog Odin-M 490626 Lowlands-...

This paper investigates the linearization, using perturbation methods, of the structural deformations in the nonlinear flight dynamic response of aircraft with slender, flexible wings. The starting point is the coupling of a displacement-based geometrically nonlinear flexible-body dynamics formulation with a 3D unsteady vortex lattice method. This is followed by a linearization of the structura...

Seismic record of an earthquake contains important and significant data about characteristics of a ground motion. In this study, interdependencies between important seismic parameters and three overall structural damage indices including the Bracci index, the modified flexural damage ratio (MFDR) index and the drift index were determined for several records of earthquakes occurred in the Iran. ...