conclusions although the two instruments were able to discriminate between various states, the values derived from these instruments were quite different. this distinction could have influenced the conclusions of an economic evaluation. further research is required to determine which instrument should be used in economic evaluations. results the mean and median eq-5d utility scores for the tota...

The optimal tradeoff between average service cost rate, average utility rate, and averagedelay is addressed for a state dependent M/M/1 queueing model, with controllable queue lengthdependent service rates and arrival rates. For a model with a constant arrival rate λ for all queuelengths, we obtain an asymptotic characterization of the minimum average delay, when theaverage serv...

In this paper we discuss the complexity of a dynamic spectrum management problem within a multi-user communication system with K users and N available tones. In this problem a common utility function is optimized. In particular, so called min-rate, harmonic mean and geometric mean utility functions are considered. The complexity of the optimization problems with these utility functions is alrea...