This paper presents an exponential-based spiral dynamic algorithm (SDA) as an improved version of the original SDA. A simple structure with a unique feature of a spiral model in SDA leads the algorithm achieving fast convergence speed and short computation time. However, adopting a constant radius and a constant angle into the spiral model of SDA causes the algorithm to trap into local optima s...

Fiber winding tension is an important factor in the molding techniques of composite material which influences the quality of winding product directly, and the tension control is a key technique in fiber winding techniques. This paper introduces a closed-loop tension control system with the programmable logic controller (PLC) with function modules as its control kernel, the alternating current (...

The lower spectral radius, or joint spectral subradius, of a set of real d× d matrices is defined to be the smallest possible exponential growth rate of long products of matrices drawn from that set. The lower spectral radius arises naturally in connection with a number of topics including combinatorics on words, the stability of linear inclusions in control theory, and the study of random Cant...

Introduction: The most common cause of distal radius fracture is a fall on an outstretched hand. Osteoporosis can make a relatively trivial fall result in a broken wrist. Many distal radius fractures in people older than 60 years of age are caused by a fall from a standing position Methodology: Total of 1336 bony injuries were reported to Hospital casualty and orthopedic opd during the study pe...