This may sound all very intractable, but indeed even short-term (2 weeks) treatment with a CNS-active selective 11β-HSD1 improvesr improves cognitive function in aged mice, at least in the low stress Y-maze task [256].
Indeed, optimizing the system's achievable sum-rate or some other objective under SU power or rate constraints is a very difficult, intractable and non-convex problem in an interference channel model.
In addition, ascertainment of homology in the data set created by NGS is very intractable because of complex paleopolyploidization and gene duplication in the grapevine genome [ 9].
Óscar Ortiz, the mayor of Santa Tecla, called the truce a very bold answer to an intractable situation.
Everything about Transamerica is fraught and complicated, yet writer/ director Duncan Tucker somehow creates from these intractable materials a very easy and even happy comedy.
In humans, icv morphinotherapy is a very effective treatment for chronic intractable pain of cancerous origin [23].
But perhaps the most intractable may be a very fundamental one: a breaking of trust.
But Powerset remains a long way off from its promise and faces a seemingly intractable problem: for a very large fraction, if not the vast majority, of searches, keywords work just fine.
