Or is it … that the high-performing ethnic groups, Chinese, Indian, African and Polish have exploded in numbers, whereas the poor performing groups, poor whites and African-Caribbeans, have gone down in numbers that accounts for the change?" Gladesmore Community School in Tottenham is one of those schools that seems to have followed the classic London Challenge trajectory.
Existing virus resistance alleles could be maintained or enhanced if virus challengers perennially recur (trajectories 1 or 2), or virus resistance alleles could be lost if virus challenges diminish (trajectory 3).
The provision of optimal end-of-life care for people living with Parkinson's disease is challenging because the disease trajectory is longer and less predictable than other progressive illnesses such as cancer [ 2].
However, any practical implementation of this method has proven challenging as full ontogenetic trajectories should be known (or assumed), but data for this hardly ever is available from natural populations [9].
Jain et al. [71] considered the problem of learning good trajectories for manipulation tasks, which is challenging because the criteria defining good trajectories varies with users, tasks, and environments.
Monocle2 [85] was recently implemented to overcome the accuracy challenges in trajectory reconstruction.
This trend introduces a new challenge for trajectory design when combined with the increasing prevalence of low-thrust, high specific impulse electric propulsion systems.
"It's evolutionarily useful that the brain fastens on challenging problems that have to do with trajectories," says game designer Raph Koster.
"It's evolutionarily useful that the brain fastens on challenging problems that have to do with trajectories," he told us when we spoke to him about compulsive games three years ago.
For some with uncertain trajectories, marked by diagnostic uncertainty and challenging symptom control, community geriatricians or palliative care specialists could enable resolution of issues without hospital admission.
