Avoiding deadlock is essential in the operation of highly automated manufacturing systems. Many of these systems support sufficient redundancy to permit flexible part routing. Although flexible routing improves the inherent operational flexibility of these systems, it also requires more highly sophisticated supervisory control techniques. The objective of this work is to characterize the deadlo...

This paper considers a multiclass Markovian fluid queue with a buffer of infinite capacity. Input rates of fluid flows in respective classes and the drain rate from the buffer are modulated by a continuous-time Markov chain with finite states. We derive the joint Laplace-Stieltjes transform for the stationary buffer contents in respective classes, assuming the FIFO service discipline. Further w...

A new amine buffer for the pH range 8.5 to 10.5 based on D(-)-N-methylglucamine and its hydrochloride is described. Important physical and chemical constants characterizing this buffer system have been determined: thermodynamic pKa = 9.52 (25 degrees C), buffer capacity = 0.055, dilution value pH 1/2 = -0.02, temperature coefficient dpKa/dT = 0.023, the heat of ionization delta H degrees = 36.9...