Energy retro-commissioning of historical buildings is an important challenge that implies both historic-artistic and technological aspects concerning the improvement in energy efficiency and comfort.
We find that even the earliest R&D-projects used non-insignificant cash outlays and that until the 1970s aggregate R&D outlays grew far faster than GDP, despite five well-known challenges that implied that R&D could only be financed with cash, for which no perfect market existed: the presence of sunk costs, real uncertainty, long time lags, adverse selection, and moral hazard.
The generation of stable and unique digital identity from features in Cloud computing is challenging because of the unstable operation environments that implies the features employed are likely to vary under normal operating conditions.
"No one writes," "solitude," "autumn," "funeral," "death foretold," "labyrinth," "kidnapping": these are all words used in García Márquez book titles and, as Mr. Martin asserts, words that imply some challenge to power.
If drugs worked, that implied an organic, or medical, basis for neurosis, which in turn challenged some of the basic assumptions of psychoanalytically oriented therapy.
That implies new challenges for the port governance.
Waters (1990) challenges the commitment to unification that implies there is explanatory loss in appealing to the multiply realized "gory details" of molecular biology.
That implies a shooting every four days.
That implies a fair amount of change.
That implies an election was happening.
But that implies that the sensuous meaning-event is vulnerable to a skeptical challenge.
