These three different versions of the handoff management scheme are defined as the SH scheme, the reactive unified spectrum handoff (USH) scheme and the proactive unified spectrum handoff (PUSH) scheme.
In this figure, the PUSH scheme outperforms the two other schemes in terms of SU throughput.Figures 17 and 18 show the simulation results of the average spectrum handoff delay under different network conditions.
The simulation results indicate that the spectrum handoff blocking probability in the PUSH scheme (Phb,PUSH) is significantly lower than the probability of the spectrum handoff blocking in the scheme deploying only spectrum handoff (Phb, SH).
In this figure, on the other hand, the PUSH scheme outperforms the other two schemes in terms of SU throughput.Figure 16 shows the SU throughput under various numbers of PU channels.
As with the work-pushing scheme, buckets are the smallest entity of work that can be reassigned.
In the short run, using it would merely push more schemes on to the PBGC's books.
It is no wonder that Adair Turner, in his report on pensions, urged legislation to push pension schemes to an opt-in default position and that policy is moving in this direction.
In recent months, banks' refusal to lend money to public infrastructure projects such as schools, hospitals and housing has forced the Treasury to set up its own lending arm to push through schemes.
The knock on effect of this has been to sharply raise the estimated cost of providing pensions and, in the past three years, helped to push many schemes into deficit when they might otherwise have been in surplus.
If climate change keeps getting worse then I would expect denialists to grasp at stranger straws, many skeptics to become warners, the warners to start pushing geoengineering schemes like sulfur dust in the stratosphere, and the calamatists to push liberal political agendas — just as the denialists said they would.
