They include historical documentation, archeological evidence such as typologically defined epochs, stratigraphic information, and a range of physical/chemical/environmental methods, for instance radiocarbon dating (for a review, see Aitken (1999)).
To further address this issue, the single-channel analysis was performed for three arbitrarily defined epochs: 0 500, 500 1000 and >1000 ms after brief GABA application.
"Tennyson found in the depth of his own suffering a way of reaching into anxieties that defined an epoch".
And, like most of the great actor-director teams of the fifties and sixties, Parker and Avedon defined their epoch.
That's how he defined our epoch in an address winding up the seven-year U.S. war in Iraq.
All that, set against a soundtrack ruled by the Doors, the Rolling Stones, and the "White Album" incarnation of the Beatles, whose aural evolution defined the epoch.
In the end, as the dancers collapsed and crumbled, the impact was gut-wrenching, reminiscent of the overwhelming grief that defined the epoch just after 9/11.
During a 5-min period where the mean arterial pressure variation was less than ± 5 mmHg, repeated simultaneous COtd and COdopp measurements were obtained and defined an epoch.
"Inventing Downtown: Artist-Run Galleries in New York City, 1952-1965," a jam-packed show at New York University's Grey Art Gallery, surveys a defining epoch in the geographical mythos.
That defining epoch in the city's history was made by money – through the immense wealth of the Medici and other families who invented modern banking.
