We present the transient analysis of the system content in a two-class discrete-time M X /D/1 priority queue. In particular, we derive an expression for the generating function of the transient system contents of both classes at the beginning of slots. Performance measures are calculated from this generating function. To illustrate our approach we conclude with some examples. c © 2008 Elsevier ...

| Modeling of nonstationary stochastic time series has found wide applications in speech processing, biomedical signal processing, seismology and failure detection. In this paper, the problem of deening a time-dependent spectrum for a general class of nonstationary processes is addressed. A class of piecewise locally stationary processes is introduced. It is shown that this is the appropriate c...

in this paper, optimal distributed control of the time-dependent navier-stokes equations is considered. the control problem involves the minimization of a measure of the distance between the velocity field and a given target velocity field. a mixed numerical method involving a quasi-newton algorithm, a novel calculation of the gradients and an inhomogeneous navier-stokes solver, to find the opt...

Harmonics have become an important issue in modern power systems. The widespread penetration of non-linear loads to emerging power systems has turned power quality analysis into an important operation issue under both steady state and transient conditions. This paper employs an Extended Harmonic Domain (EHD) based framework for dynamic analysis of long term analysis over voltages during the tra...

• New OP variant with service time dependent profits and travel times. Mathematical formulation possible applications of this problem. Metaheuristic solution approach composed specific local moves. Benchmark instances known optimal solutions to verify the approach. Real data instance evaluate proposed model method. This paper addresses orienteering problem windows (TDOPTW-STP). In TDOPTW-STP, e...

this study investigated the concentration/time dependent effects of nanosilver colloid on the motionparameters of the ejaculated ram spermatozoa in vitro. after incubation of sperm samples for 30, 60, 120 and 180 min in the presence of nanosilver colloid (0, 0.001, 0.01, 0.1, 1 and 10 ppm), the motion parameters were evaluated by computer assisted sperm analysis. there was a significant (p