North Korea is another nation on the low end of a huge ''time lag'' with the West.

If retail chains are to continue making money, there will have to be a different model with a much shorter time lag between the indicators of customer demand and the arrival of products.

"That time lag of about two hours was when they were trying to locate someone with the authority to tell them they could go ahead and take water out of the Chewuch River," said Flatten.

The underwater images were transmitted via supersonic waves to a facility above ground, almost without any time lag.

In addition, the company is aiming to prevent the circulation of pirate editions which have been increasing owing to the time lag between the two countries release schedules.

There may be a time lag in reporting between the date of the financial statements of the investor and that of the investee.

It says there is a time lag of two-three months between fluctuation in price of crude oil and the corresponding change in the price of petrol.

Also, published sources are pre-1990, indicating a time lag between research and writing, and publication.

The time lag helps prevent the motor windings from overheating.

There is a natural time lag between cause and effect, between land use changes and environmental quality, and often that connection is not made a drop in water quality that can be traced back to a loss in forest cover, for example.

Some earlier reviewers were concerned over the few centuries' time lag between the writing of some of the texts he cites and the subsequent appearance of related images.

The 450 mm circular reinforced concrete columns support exceptionally thick 300 mm slabs which, acting as time lag storage heaters, are plastered on the underside and carry raised floors.