A tactical skid-to-turn missile autopilot is designed and implemented using a two step design process that results in an optimal output feedback with a fixed, low-order dynamic compensator for reduced design and implementation cost. The gain design consists of minimizing a performance index in which measurements and controls are appropriately weighted to achieve the desired speed of response, w...

This paper documents a simulation study undertaken to gain insights into the Vari-Metric multi-echelon repairable inventory optimization method. The method was analyzed in the context of the Coast Guard’s fleet of fixed and rotary wing aircraft, for which operational availability is the key performance metric. Failure rates of parts in this system exhibit variance-to-mean ratios higher than one...

Shannon showed in [18] that the capacity of discrete memoryless channels (DMCs) does not increase even when a noiseless and delay free feedback link exists from receiver to transmitter. Moreover on symmetric DMCs the sphere packing bound is an upper bound for the error exponent of fixed-length block-codes, as shown by Dobrushin1 in [5]. Thus relaxations like error-and-erasure decoding or variab...

Space-time (ST) coding techniques exploit the spatial diversity afforded by multiple transmit and receive antennas to achieve reliable transmission in scattering-rich environments. ST block codes are capable of realizing full diversity and spatial coding gains at relatively low rates; ST trellis codes can achieve better rate-diversity tradeoffs at the cost of high complexity. On the other hand,...

aim : the aim of this study was to evaluate the prevalence rate of cryptosporidium and other enteropathogen parasites among patients with gastroenteritis in western cities of mazandaran province, northern iran, during one year. background : as specific characterization, high humidity, ecological conditions, superficial water sources, municipal water supplies, domestic and industrial animal husb...