"When we picked things up in mid-2002 and 2003, it would not have been prudent, given market conditions, to have maintained distribution at the same historical levels," he said.
But Wal-Mart and other big retailers already have low-price contracts with shippers, and the stores maintain distribution centers nationwide that reduce shipping distances and costs.
Plenty of companies need to establish and maintain distribution centers in smaller markets, too, according to Benjamin Butcher, chief executive of STAG Industrial in Boston.
The EPA, which is responsible for enforcement of the SDWA, notes in its published materials that, "Drinking water that is not properly treated or disinfected, or which travels through an improperly maintained distribution system, may also pose a health risk".
To avoid a change in the distribution, the artificial dataset was generated by removing every other sample, maintaining their distribution across decades (Additional file 1: Table S2).
Dominion Virginia spent far less on maintaining its distribution system last year than 2001, $47 million compared with more than $86 million.
ESPN appears to be taking a harder line because Disney is more worried about maintaining future distribution alternatives.
The most likely reason is that KnEA is good at maintaining the distribution of solutions.
Selection was performed maintaining a distribution of the quantitative data values and class proportions for the qualitative data.
