Integer variables are used to select appropriate feedstocks, technologies, and products, material and capacity balances are used to design capacity and set production targets, while cash balances are used to describe investment and operations financing.
In February, McAfee said hackers operating from China stole information from oil companies in the US, Taiwan, Greece and Kazakhstan about operations, financing and bidding for oil fields.
Last week, however, a senior C.I.A. official confirmed that the intelligence community had not yet developed a significant amount of solid information about the terrorists' operations, financing, and planning.
"We are concerned about the blatant attempts to whip up a non-existent fear of mass starvation by some aid agencies, a type of hype that does not provide a solution to the situation on the ground but more to do with calculations for operations financing locally and abroad," the president said.
Since the attacks on the World Trade Center and the Pentagon three weeks ago, every aspect of air travel has come under re-examination -- not just security, but everything from customer service to flight operations, financing and the proper response by chief executives to a crisis, as well.
