It relates to evolutionary psychology's explanation that, to some extent, we are driven to keep foods separate to avoid the possibility of contamination when food sources weren't particularly safe or familiar, or had an uncertain source".
Angry expressions signal a direct and immediate threat, while fearful expressions indicate the presence of a significant, but uncertain, source of threat in the environment (Fridlund, 1994).
Armed with historical cohort data, a freemium business will go into a quarter with a good sense of both how many premium customers will continue to pay and how many free users will convert to customers, leaving new customers as the only uncertain source of revenue.
This, together with the uncertain source of funding to cover WHL operating and maintenance costs, has resulted in many urban managers seeking private sector funding either in the form of visitor access fees or leasing part of the site for high-rental facilities such as five star hotels, clubs and expensive restaurants.
These methods allow the determination of the overall emissions of a large area with uncertain sources of emission.
But the agencies noted that paying for the debt depended on donations and ticket sales, two uncertain sources of money.
Textiles and paper products became the primary sources of manufacturing employment, while fisheries and agriculture continued as important but uncertain sources of income.
Over the two decades of his rule, Mr. Karimov has expelled nearly all foreign journalists and aid workers, so reporting on the country tends to be fragmentary and based on uncertain sources of information.
He reported in Sept. that at the end of the Koch 4-year plan the budget gap could be as high as 2 billion, because of the administration's omission of unavoidable obligations on one side of the ledger and its inclusion of some highly uncertain sources of revenue on the other side.
