Melbourne, Nov 2 : Although the ‘art’ called ‘shopping’ has no ‘science’ behind it, a mathematician has come up with the prefect formula for spending spree.

Roger Bird’s algebraic formula takes in certain factors, which include time constraints, the number of shoppers in the group and the amount of spending money, to calculate the best conditions for a shopping trip.

The researcher from Bradford Education Authority, in Britain, devised the formula based on results of a shopping centre survey of 1000 people.

As per Bird''s findings, the perfect excursion involved a visit to several clothing stores located close to each other between 9am and 11am on a Saturday, reports the Daily Telegraph.

Washington, November 2 : A Dalhousie University mathematician has a mystery as to why the opening chord to The Beatles’ "A Hard Day''s Night" is completely different than anything found in the literature about the song to date.

Jason Brown’s work attains significance as no one quite knew exactly what chord Harrison was playing for 40 years.

He has found that there was a piano among Harrison’s 12-string Rickenbacker, John Lennon’s six-string guitar and Paul McCartney’s bass guitar, and that they collectively accounted for the problematic frequencies.

Washington, November 2 : A study conducted by British researchers suggests that office workers can be helped in staying more alert and less sleepy during the day by changing traditional white-light lighting to blue-enriched white light.

Researchers from the Surrey Sleep Centre at the University of Surrey, who partnered with Philips Lighting for the study, said that this approach can lead to significant improvements in subjective measures of positive moods, work performance, fatigue in the evening, irritability, ability to concentrate and focus and eye strain.

The workers exposed to blue-enriched white light during the study also reported improved sleep at night, the researchers say.

The latest Obama vs McCain Florida Polls show that Barack Obama has slim edge over John McCain — Obama holds slim lead over McCain.

Florida went with Republicans in 2000 and 2004, but the latest FL polls show Obama having thin lead over McCain. Let’s check out what McCain vs Obama Florida polls show.

Mason-Dixon’s Obama vs McCain FL poll, conducted from October 29 to October 30, shows Obama leading McCain by 2 % points — 49 % to 47 % among the likely voters of Florida.

Datamar Inc.’s Obama vs McCain FL poll, conducted from October 29 to October 30, shows Obama and McCain statistically tied — 46.7 % to 46.7 % among the likely voters of Florida.

Washington, November 2 : Studying what happens if drivers combine extended driving and sleep deprivation, a team of researchers has shown that fatigue connected to the duration of driving very significantly increases the risk of accidents at night.

Experts from CNRS, Inrets, the University of Bordeaux and the University of Stockholm say that their study was able to determine whether 2, 4 and 8 hours of nocturnal driving affected driving performance differently.

Bratislava - More than 50 people were injured in nationalistic-fuelled violence at a football game in south-western Slovakia.

Thirty-one people were arrested in Saturday's rioting - 18 fans for the home team in Dunajska Streda, one of the most important centres for Slovakia's ethnic Hungarian minority, and 13 from the away team from Bratislava, a police spokeswoman in Bratislava said.

Violence had been feared ahead of the championship game between AC Dunajska Streda and Slovan Bratislava as hundreds of football hooligans and neo-Nazis from Hungary were expected to travel to the match.