" LONDON Nike Air Max 2018 Sale Clearance , May 27 (Xinhua) -- In an era of mobile internet, data is a key element in many fields. Now researchers said they can even use geographical data from mobile phones and Twitter to estimate the size of a large crowd.
Over a two-month long study in Milan, researchers from UK's Warwick University analyzed geo-tagged tweets and mobile phone use, based on the mobile data provided by local carrier.
They focused their study on two locations in the city, a football stadium and an airport. Through flight schedules and football ticket sales Nike Air Max 90 Sale Clearance , they acquired the number of visitors and then compared these figures with mobile phone activities, such as phone calls and text messages, internet use, and tweets.
Researchers said these activities followed a similar pattern with the flow of visitors, which enables them to estimate the crowd size of an event.
For example Nike Air Max Sale Clearance , a total of 10 football matches took place in the stadium during the study period, and researchers can use mobile internet data from any nine of those matches to predict the number of visitors at the tenth one.
As for the accuracy of this new method, researchers said their estimate and the actual number of people differ in absolute value by roughly 13 percent.
Current approaches to these kinds of estimate are based on images, grids and human judgment, and previous case has showed that traditional method can only produce results with higher error rate than the new one Air Max 2017 Sale Clearance , according to the study.
But still there are experts who questions such method, saying the user base of twitter, people's habits of mobile use in different places and the variations of mobile phone signal can affect the study results.
The study has been published in the journal Royal Society Open Science.
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MADRID, April 11 (Xinhua) -- The race for the La Liga between league leaders, FC Barcelona and Real Madrid got a lot closer on Saturday after Real Madrid won their game Air Max 2018 Sale Clearance , but Barcelona were held to a 2-2 draw away to Sevilla.
Barca had kicked off in Sevilla knowing they needed to win away to a side that had not lost in front of their fans in 31 league matches in order to maintain their 4-point advantage at the top of the table over Real Madrid, who had already won their game.
Things had started perfectly for Barca, who played perhaps their best 30 minutes football of the season and took a 2-goal lead through Leo Messi and a Neymar free kick in the first half and hour. Sevilla got a lifeline seven minutes before the break when Claudio Bravo failed to keep out Ever Banega's 30-yard shot and the home team dominated the second half with a magnificent display of physical football.
They got their reward six minutes from time when substitute Kevin Gameiro swept home Alex Vidal's cross after Jose Antonio Reyes had intercepted Pique's pass from defense.
Real Madrid opened the day with a comfortable win at home to Eibar, who managed just one shot on target all game, despite Real Madrid resting a host of players with an eye to Tuesday's Champions League tie away to Atletico Madrid.
Cristiano Ronaldo opened the score with a free kick after 21 minutes Air Max 90 Sale Clearance , but visiting keeper, Xabi Irureta should have done more to keep a weak shot out of his goal.
Javier Hernandez, enjoying a rare start, doubled their lead with a well-placed header from an Alvaro Arbeloa cross ten minutes later and Jese Rodriguez rounded off the scoring with just seven minutes remaining.
Atletico Madrid didn't rest any players for what was a far tougher looking trip away to seventh placed Malaga, although they took the lead after 25 minutes thanks to Antoine Griezmann's 17th league goal of the season.
A Fernando Torres own goal and a smart finish from Samu turned the score into Malaga's favor Air Max Sale Clearance , but Griezmann's second of the game, scored from a clear offside position assured a share of the points which is of no great help to either side.
Rao Vallecano scored after 23 seconds away to Celta Vigo, but lost 6-1 as 19 year-old Celta striker Santi Mina scored four goals and his companion Juaquin Larrivey, a former Rayo striker scored two more.
Finally Almeria won a relegation duel 3-0 against Granada thanks to two goals from Thomas Partay and another from Espinosa. The result leaves Granada in deep trouble and coach Abel Resino in danger of the sack.
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LOS ANGELES, June 30 (Xinhua) -- A twin-engine airplane crash-landed and burst into flames Friday morning on the 405 Freeway in Orange County Nike Air Max 2017 Sale , Southern California in west U.S., images from the scene showed.
The Cessna 310 with two people on board crashed with its nose down and landed on the southbound lanes. The two persons were being treated for major injuries, authorities said.
The plane burst into flames about 9:35 a.m. local time north of MacArthur Boulevard, about 300 meters from a John Wayne Airport runway, video from the scene showed.
The freeway was temporarily shut down in both directions Nike Air Max 2018 Sale , the California Highway Patrol said.
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UNITED NATIONS Nike Air Max 90 Sale , Oct. 30 (Xinhua) -- The United States on Monday pledged 60 million U.S. dollars as bilateral aid to shore up a joint military force of five Sahel countries, but remained cautious over UN involvement.
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