Sentence examples for existed periodically from inspiring English sources

The preserve occupies a tiny portion of what was once called Beringia, a vast ancient land region (often referred to as a "land bridge") that existed periodically and in various configurations for hundreds of thousands of years during the Pleistocene Epoch (about 2,600,000 to about 11,700 years ago) and connected North America and Asia.

For the first case, the proposed result shows that there exists periodically switching rule guaranteeing the exponential stability of the whole system with (sufficient) small switching period if there is a Hurwitz linear convex combination of two uncertain linear systems derived from two subsystems by certain linearization.

Lately, the band has existed only periodically, including a few festival dates in 2011, but this year marked its first cross-country tour since the '90s.

A Friulian separatist movement exists and periodically presses its demands for Friulian autonomy; Friulians represent about three-fifths of the region's population.

It is shown that local skids exist and periodically vary with the roller revolution, especially for the roller entering and leaving the load region.

This model-building process is designed to take advantage of associations in the sequentially lagged relationships that usually exist in periodically collected data [ 21].

This model building process was designed to take advantage of associations in the seasonally and sequentially lagged relationships that usually exist in periodically collected data.

"As long as the show exists, it will periodically reconnect with where we are in processing it," he said, adding that the conspiracy-theory plotline represented only a small part of the season's story.

A considerable rivalry existed between the different states over agricultural land and the control of trade and trade routes, and Hausaland was periodically conquered by powerful neighbours such as Borno and Songhai.

For roughly two centuries, Israel had existed as a loose confederation of tribes, dependent for their unity upon bonds of religious faith and covenant that were renewed periodically in cultic ceremonies at the central shrine at Shiloh.

Under some conditions, no stable steady state solution exists and the energy shifts periodically between the two relevant modes.