The utility of a contents delivery network depends on the waiting time. This paper deals with the priority control of contents delivery networks from the viewpoint of utility. First, a subjective evaluation experiment on image downloading is carried out to obtain the relationship between the waiting time and the utility. From the results, a function of the utility versus the waiting time is est...

Although mixed mating systems involving both selfing and outcrossing are fairly common in hermaphrodites, the mechanisms maintaining still unknown many cases. In some species, individuals that have not yet found a partner delay self-fertilization for time. This “waiting time” to (WT) can exhibit heritable variation between is subject two opposing selection pressures: waiting longer increases de...

As blood donations are provided on a voluntary non-remunerated basis, blood donors should be treated as user-friendly as possible. Delays and waiting times within blood collection sites (donor centers) should thus be kept at acceptable levels. Waiting times are not incorporated directly other than by practical experience. A more rigorous approach is required. An analytic waiting time computatio...

When working with chaotic systems, the average length of a transient phase before a particular event occurs is often required. Examples of this include the transient phase before a control mechanism can be activated @1,2# or the length of a chaotic transient after a crisis has occurred @3#. In both cases, the transient occurs before iterates fall into a small region. For controlling chaos, this...

Department of Computer Science – Louisiana Tech University P. O. Box 10137 – Ruston – Louisiana – 71272 – USA Bioinformatics Department – National Institute of Research and Development for Biological Sciences Splaiul Independenţei, Nr. 296 – Sector 6 – Bucharest – Romania Departamento de Inteligencia Artificial – Facultad de Informática – Universidad Politécnica de Madrid Campus de Montegancedo...

We propose a model for disorderly streetcar routes. Through simulations and comparisons to real data, we illustrate that such routes may sometimes become supersaturated, in the sense that forward and backward waiting times become positively correlated.

In this paper, we develop a general expression for the second moment of waiting time for polling systems with either an exhaustive or gated service policy. We obtain a closed form expression for the second moment of waiting time for the special case of systems with two identical stations. This result is used to show that the behavior of the first two moments can be very different. Specifically,...

A number of OECD countries have introduced waiting time prioritisation policies which give explicit priority to severely ill patients with high marginal disutility of waiting. There is however little empirical evidence on how patients are actually prioritised. We exploit a unique opportunity to investigate this issue using a large national dataset with accurate measures of severity on nearly 40...