Future science: Using 3D worlds to visualize data

CHICAGO (AP) — Take a walk through a human brain? Fly over the surface of Mars? Computer scientists at the University of Illinois at Chicago are pushing science fiction closer to reality with a wraparound virtual world where a researcher wearing 3D glasses can do all that and more.

In the system, known as CAVE2, an 8-foot-high screen encircles the viewer 320 degrees. A panorama of images springs from 72 stereoscopic liquid crystal display panels, conveying a dizzying sense of being able to touch what's not really there.

As far back as 1950, sci-fi author Ray Bradbury imagined a children's nursery that could make bedtime stories disturbingly real. "Star Trek" fans might remember the holodeck as the virtual playground where the fictional Enterprise crew relaxed in fantasy worlds.

The Illinois computer scientists have more serious matters in mind when they hand visitors 3D glasses and a controller called a "wand." Scientists in many fields today share a common challenge: How to truly understand overwhelming amounts of data. Jason Leigh, co-inventor of the CAVE2 virtual reality system, believes this technology answers that challenge.

"In the next five years, we anticipate using the CAVE to look at really large-scale data to help scientists make sense of that information. CAVEs are essentially fantastic lenses for bringing data into focus," Leigh said.

The CAVE2 virtual world could change the way doctors are trained and improve patient care, Leigh said. Pharmaceutical researchers could use it to model the way new drugs bind to proteins in the human body. Car designers could virtually "drive" their new vehicle designs.

Imagine turning massive amounts of data — the forces behind a hurricane, for example — into a simulation that a weather researcher could enlarge and explore from the inside. Architects could walk through their skyscrapers before they are built. Surgeons could rehearse a procedure using data from an individual patient.

But the size and expense of room-based virtual reality systems may prove insurmountable barriers to widespread use, said Henry Fuchs, a computer science professor at the University of North Carolina at Chapel Hill, who is familiar with the CAVE technology but wasn't involved in its development.

While he calls the CAVE2 "a national treasure," Fuchs predicts a smaller technology such as Google's Internet-connected eyeglasses will do more to revolutionize medicine than the CAVE. Still, he says large displays are the best way today for people to interact and collaborate.

Believers include the people at Marshalltown, Iowa-based Mechdyne Corp., which has licensed the CAVE2 technology for three years and plans to market it to hospitals, the military and in the oil and gas industry, said Kurt Hoffmeister of Mechdyne.

In Chicago, researchers and graduate students are creating virtual scenarios for testing in the CAVE2. The Mars flyover is created from real NASA data. The brain tour is based on the layout of blood vessels in a real patient.

Brain surgeon Ali Alaraj remembered the first time he viewed the brain using the CAVE2.

"You can walk between the blood vessels," said the University of Illinois College of Medicine neurosurgeon. "You can look at the arteries from below. You can look at the arteries from the side.... That was science fiction for me."

Would doctors process information faster with fewer errors using CAVE2? That's the question behind a proposed study that would compare CAVE2 to conventional methods of detecting brain aneurysms and determining proper treatment, said Andreas Linninger, UIC professor of bioengineering, chemical engineering and computer science.

But it's not all serious business at the lab.

In his spare time during the past two years, research assistant Arthur Nishimoto has been programming the CAVE2 computer with the specifications for the fictional Starship Enterprise. He now can walk around his life-size recreation of the TV spacecraft.

The original technology, introduced in the early 1990s, was called CAVE, which stood for Cave Automatic Virtual Environment and also cleverly referred to Plato's cave, the philosopher's analogy about shadows and reality. It was named by former lab co-directors Tom DeFanti and Dan Sandin.

The second generation of the CAVE, invented by Leigh and his collaborator Andy Johnson, has higher resolution. The project was funded by the National Science Foundation and the Department of Energy.

"It's fantastic to come to work. Every day is like getting to live a science fiction dream," Leigh said. "To do science in this kind of environment is absolutely amazing."

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AP Medical Writer Carla K. Johnson can be reached at http://www.twitter.com/CarlaKJohnson.

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Wall Street set for flat open after data, Fed minutes on tap

NEW YORK (Reuters) - Stocks were little changed on Wednesday after housing and inflation data pointed to a continuation of modest economic improvement and ahead of the minutes from the Federal Open Market Committee's January meeting later in the session.

Groundbreaking to build new U.S. homes fell 8.5 percent in January but new permits for construction rose to a 4 1/2-year high while producer prices rose in January for the first time in four months.

The data should enable the Fed to maintain its easy monetary policy in its efforts to stimulate the economy.

Later in the session, investors will look to the minutes from the Fed's January meeting for any indication as to how long the current monetary policy will remain in effect.

"It's hard in any given data point to take a strong conclusion that we are moving dramatically forward, but over time, clearly things are getting better," said Robert Lutts, chief investment officer at Cabot Money Management in Salem, Massachusetts.

Lutts described an economy that was addicted to stimulus.

"The bottom line is the economy is on heroin today and we will at one time move to a diluted form of heroin, but it's very important for people to remember we are still on an unbelievably aggressive, never-seen-before accommodative policy and this economy is going to improve."

The S&P 500 <.spx> is up more than 7 percent for the year, fueled by legislators' ability to sidestep an automatic implementation of spending cuts on tax hikes on January 1, better-than-expected corporate earnings and modestly improving economic data that has been tepid enough for the Fed to maintain its stimulus policy.

The Dow Jones industrial average <.dji> dropped 5.99 points, or 0.04 percent, to 14,029.68. The Standard & Poor's 500 Index <.spx> lost 2.60 points, or 0.17 percent, to 1,528.34. The Nasdaq Composite Index <.ixic> shed 3.12 points, or 0.10 percent, to 3,210.48.

U.S. oil and gas producer Devon Energy Corp reported a fourth-quarter loss as it wrote down the value of its assets by $896 million due to weak gas prices. Shares dipped 1.6 percent to $59.60.

OfficeMax Inc and Office Depot Inc shares were halted as the companies announced a merger agreement. An earlier online statement of the deal was pulled down as an agreement had not yet been struck.

Toll Brothers Inc lost 4 percent to $35.43 after the largest luxury homebuilder in the United States, reported first-quarter results well below analysts' estimates.

SodaStream dropped 3.2 percent to $50.79 after the seller of home carbonated drink maker machines posted fourth-quarter earnings and provided a 2013 outlook.

According to Thomson Reuters data through Tuesday morning, of the 391 companies in the S&P 500 that have reported results, 70.1 percent have exceeded analysts' expectations, compared with a 62 percent average since 1994 and 65 percent over the past four quarters.

Fourth-quarter earnings for S&P 500 companies are estimated to have risen 5.6 percent, according to the data, above a 1.9 percent forecast at the start of the earnings season.

(Reporting by Chuck Mikolajczak; Editing by Chizu Nomiyama and Nick Zieminski)

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Venezuela's Maduro would win if Chavez goes: poll

CARACAS (Reuters) - Venezuelan Vice President Nicolas Maduro would comfortably win a presidential election should his boss Hugo Chavez's cancer force him out of power, according to an opinion poll.

The first survey on such a scenario, by local pollster Hinterlaces, gave Maduro a potential 50 percent of votes, compared to 36 percent for opposition leader Henrique Capriles.

Chavez returned to Venezuela on Monday after a long stay in Cuba to continue treatment at home for the disease that is jeopardizing his 14-year socialist rule of the South American OPEC nation.

He has named 50-year-old former bus driver and union activist Maduro as his preferred successor. But Capriles, 40, a center-left state governor who lost to Chavez in a presidential vote last year, would likely run again.

Chavez still has not said a word in public since his December 11 operation in Cuba, and Venezuelans were debating on Tuesday the various possible scenarios after his homecoming - from full recovery, to resignation, or even death from the cancer.

Should Chavez be forced out, Venezuela's constitution stipulates an election must be held within 30 days.

Capriles, who crossed swords with Hinterlaces at various points during the presidential election, again mocked its director, Oscar Schemel, as being biased against him.

"That man is not a pollster, he's on the government's payroll," Capriles told local TV.

"He said in December I would lose the Miranda governorship," he added, referring to his defeat of government heavyweight Elias Jaua, now foreign minister, in that local race.

Opinion surveys are notoriously controversial and divergent in Venezuela, with both sides routinely accusing pollsters of being in the pocket of the other.

Hinterlaces surveyed 1,230 people between January 30-February 9.

(Editing by Bill Trott)

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Michael Jackson's Son Prince Michael Works as TV Reporter

Only on People.com

By Jennifer Garcia

02/19/2013 at 09:35 AM EST

From left: James Franco, Zach Braff and Prince Michael Jackson

Courtesy ET

Michael Jackson's son, Prince Michael, stepped into a world his late father knew well, becoming a special correspondent for Entertainment Tonight.

Mentored by the show's Brooke Anderson, the 16-year-old interviewed actors James Franco, Zach Braff and director Sam Raimi for their new film Oz the Great and Powerful for shows airing this week.

"We have a mutual connection, and I have been working to do something with him for a while," Anderson tells PEOPLE. "I thought interviewing the cast of Oz the Great and Powerful would be the perfect opportunity, because he's a fan of The Wizard of Oz, his dad was in The Wiz and he wants to get into directing, producing and acting one day."

So how were his reporting chops?

"He showed me up big time," Anderson says. "Ultimately, he didn't really need too much guidance. I gave him pointers, but he was a natural."

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Hip implants a bit more likely to fail in women

CHICAGO (AP) — Hip replacements are slightly more likely to fail in women than in men, according to one of the largest studies of its kind in U.S. patients. The risk of the implants failing is low, but women were 29 percent more likely than men to need a repeat surgery within the first three years.

The message for women considering hip replacement surgery remains unclear. It's not known which models of hip implants perform best in women, even though women make up the majority of the more than 400,000 Americans who have full or partial hip replacements each year to ease the pain and loss of mobility caused by arthritis or injuries.

"This is the first step in what has to be a much longer-term research strategy to figure out why women have worse experiences," said Diana Zuckerman, president of the nonprofit National Research Center for Women & Families. "Research in this area could save billions of dollars" and prevent patients from experiencing the pain and inconvenience of surgeries to fix hip implants that go wrong.

Researchers looked at more than 35,000 surgeries at 46 hospitals in the Kaiser Permanente health system. The research, published Monday in JAMA Internal Medicine, was funded by the U.S. Food and Drug Administration.

After an average of three years, 2.3 percent of the women and 1.9 percent of the men had undergone revision surgery to fix a problem with the original hip replacement. Problems included instability, infection, broken bones and loosening.

"There is an increased risk of failure in women compared to men," said lead author Maria Inacio, an epidemiologist at Southern California Permanente Medical Group in San Diego. "This is still a very small number of failures."

Women tend to have smaller joints and bones than men, and so they tend to need smaller artificial hips. Devices with smaller femoral heads — the ball-shaped part of the ball-and-socket joint in an artificial hip — are more likely to dislocate and require a surgical repair.

That explained some, but not all, of the difference between women and men in the study. It's not clear what else may have contributed to the gap. Co-author Dr. Monti Khatod, an orthopedic surgeon in Los Angeles, speculated that one factor may be a greater loss of bone density in women.

The failure of metal-on-metal hips was almost twice as high for women than in men. The once-popular models were promoted by manufacturers as being more durable than standard plastic or ceramic joints, but several high-profile recalls have led to a decrease in their use in recent years.

"Don't be fooled by hype about a new hip product," said Zuckerman, who wrote an accompanying commentary in the medical journal. "I would not choose the latest, greatest hip implant if I were a woman patient. ... At least if it's been for sale for a few years, there's more evidence for how well it's working."

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Online:

Journal: http://www.jamainternalmed.com

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Wall Street opens higher on M&A activity

NEW YORK (Reuters) - Stocks opened slightly higher on Tuesday, putting the S&P 500 on track to extend its seven-week winning streak on increased mergers and acquisitions activity.

The Dow Jones industrial average <.dji> was up 2.69 points, or 0.02 percent, at 13,984.45. The Standard & Poor's 500 Index <.spx> was up 3.02 points, or 0.20 percent, at 1,522.81. The Nasdaq Composite Index <.ixic> was up 5.50 points, or 0.17 percent, at 3,197.53.

(Reporting by Ryan Vlastelica; Editing by Kenneth Barry)

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Time to refer Syrian war crimes to ICC, UN inquiry says

GENEVA (Reuters) - United Nations investigators said on Monday that Syrian leaders they had identified as suspected war criminals should face the International Criminal Court (ICC).

The investigators urged the U.N. Security Council to "act urgently to ensure accountability" for violations, including murder and torture, committed by both sides in a conflict that has killed an estimated 70,000 people since a revolt against President Bashar al-Assad began in March, 2011.

"Now really it's time...We have a permanent court, the International Criminal Court, who would be ready to take this case," Carla del Ponte, a former ICC chief prosecutor who joined the U.N. team in September, told a news briefing in Geneva.

The inquiry, led by Brazilian Paulo Pinheiro, is tracing the chain of command to establish criminal responsibility.

"Of course we were able to identify high-level perpetrators," del Ponte said, adding that these were people "in command responsibility...deciding, organizing, planning and aiding and abetting the commission of crimes".

She said it was urgent for the Hague-based war crimes tribunal to take up cases of very high officials, but did not identify them, in line with the inquiry's practice.

Del Ponte, who brought former Yugoslav President Slobodan Milosevic to the ICC on war crimes charges, said the ICC prosecutor would need to deepen the investigation on Syria before an indictment could be prepared.

Pinheiro, noting that the Security Council would have to refer Syria's case to the ICC, said: "We are in very close dialogue with all the five permanent members and with all the members of the Security Council, but we don't have the key that will open the path to cooperation inside the Security Council."

Karen Konig AbuZayd, an American member of the U.N. team, told Reuters it had information pointing to "people who have given instructions and are responsible for government policy, people who are in the leadership of the military, for example".

The inquiry's third list of suspects, building on lists drawn up in the past year, remains secret. It will be entrusted to U.N. High Commissioner for Human Rights, Navi Pillay, upon expiry of its mandate at the end of March, the report said.

Pinheiro said the investigators would not speak publicly about "numbers, names or levels" of suspects, adding that it was vital to pursue accountability for international crimes "to counter the pervasive sense of impunity" in Syria.

FIGHT AGAINST IMPUNITY

The investigators' latest report, covering the six months to mid-January, was based on 445 interviews conducted abroad with victims and witnesses, as they have not been allowed into Syria.

"The ICC is the appropriate institution for the fight against impunity in Syria. As an established, broadly supported structure, it could immediately initiate investigations against authors of serious crimes in Syria," the 131-page report said.

Pillay, a former ICC judge, said on Saturday Assad should be probed for war crimes, and called for outside action on Syria, including possible military intervention.

Government forces have carried out shelling and air strikes across Syria including Aleppo, Damascus, Deraa, Homs and Idlib, the U.N. report said, citing corroborating satellite images.

"In some incidents, such as in the assault on Harak, indiscriminate shelling was followed by ground operations during which government forces perpetrated mass killing," it said, referring to a town in the southern province of Deraa where residents told them that 500 civilians were killed in August.

"Government forces and affiliated militias have committed extra-judicial executions, breaching international human rights law. This conduct also constitutes the war crime of murder. Where murder was committed as part of a widespread or systematic attack against a civilian population, with knowledge of that attack, it is a crime against humanity," the U.N. report said.

Those forces have targeted bakery queues and funeral processions to spread "terror among the civilian population".

"Syrian armed forces have implemented a strategy that uses shelling and sniper fire to kill, maim, wound and terrorize the civilian inhabitants of areas that have fallen under anti-government armed group control," the report said.

Government forces had used cluster bombs, it said, but it found no credible evidence of either side using chemical arms.

Rebels fighting to topple Assad have also committed war crimes including murder, torture, hostage-taking and using children under age 15 in hostilities, the U.N. report said.

"They continue to endanger the civilian population by positioning military objectives inside civilian areas" and rebel snipers had caused "considerable civilian casualties", it said.

"The violations and abuses committed by anti-government armed groups did not, however, reach the intensity and scale of those committed by government forces and affiliated militia."

Foreign fighters, many of them from Libya, Tunisia, Saudi Arabia, Lebanon, Iraq and Egypt, have radicalized the rebels and helped detonate deadly improvised explosive devices, it said.

(Reporting by Stephanie Nebehay; Editing by Alistair Lyon)

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Kate, Back from Babymoon, Resumes Royal Duties

By Simon Perry

02/18/2013 at 09:20 AM EST

Five months into her pregnancy and just back from a Caribbean "babymoon" in Mustique, the Duchess of Cambridge is stepping up her work as she returns to her royal duties.

Kate, 31, is set for a visit to the port of Grimsby, about 180 miles from London in north eastern England, where she will be shown the local work of one of her father-in-law Prince Charles's best known charities, the Prince's Trust.

On the March 5 "away day," she will also see a local school and take in a history lesson on the local fishing industry when she tours the town's museum.

With the fashion-conscious princess also thinking about her maternity wear, she's reportedly turned to friends Natasha Rufus Isaacs and Lavinia Brennan at Beulah London for some frocks, it was reported Monday – though the company did not wish to comment.

On Tuesday of this week, Kate will return to public work by visiting a treatment center run by one of her charities, Action on Addiction, a women's-only project in Clapham, London.

"These women would have chosen to have some time out of the company of men and they need to focus on themselves," charity chief executive Nick Barton tells PEOPLE. "This is more about the longer term, helping people sustain their recovery and think about the things that makes them vulnerable to relapse."

Royal aides tell PEOPLE that Kate is set to pick some new patronages in the coming weeks, to add to the several she adopted in January 2012.

As it is, the non-profit group 100 Women in Hedge Funds – already associated with Prince William – has announced it will partner with Action on Addiction for Kate's first year of her patronage.

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Study: Better TV might improve kids' behavior

SEATTLE (AP) — Teaching parents to switch channels from violent shows to educational TV can improve preschoolers' behavior, even without getting them to watch less, a study found.

The results were modest and faded over time, but may hold promise for finding ways to help young children avoid aggressive, violent behavior, the study authors and other doctors said.

"It's not just about turning off the television. It's about changing the channel. What children watch is as important as how much they watch," said lead author Dr. Dimitri Christakis, a pediatrician and researcher at Seattle Children's Research Institute.

The research was to be published online Monday by the journal Pediatrics.

The study involved 565 Seattle parents, who periodically filled out TV-watching diaries and questionnaires measuring their child's behavior.

Half were coached for six months on getting their 3-to-5-year-old kids to watch shows like "Sesame Street" and "Dora the Explorer" rather than more violent programs like "Power Rangers." The results were compared with kids whose parents who got advice on healthy eating instead.

At six months, children in both groups showed improved behavior, but there was a little bit more improvement in the group that was coached on their TV watching.

By one year, there was no meaningful difference between the two groups overall. Low-income boys appeared to get the most short-term benefit.

"That's important because they are at the greatest risk, both for being perpetrators of aggression in real life, but also being victims of aggression," Christakis said.

The study has some flaws. The parents weren't told the purpose of the study, but the authors concede they probably figured it out and that might have affected the results.

Before the study, the children averaged about 1½ hours of TV, video and computer game watching a day, with violent content making up about a quarter of that time. By the end of the study, that increased by up to 10 minutes. Those in the TV coaching group increased their time with positive shows; the healthy eating group watched more violent TV.

Nancy Jensen, who took part with her now 6-year-old daughter, said the study was a wake-up call.

"I didn't realize how much Elizabeth was watching and how much she was watching on her own," she said.

Jensen said her daughter's behavior improved after making changes, and she continues to control what Elizabeth and her 2-year-old brother, Joe, watch. She also decided to replace most of Elizabeth's TV time with games, art and outdoor fun.

During a recent visit to their Seattle home, the children seemed more interested in playing with blocks and running around outside than watching TV.

Another researcher who was not involved in this study but also focuses his work on kids and television commended Christakis for taking a look at the influence of positive TV programs, instead of focusing on the impact of violent TV.

"I think it's fabulous that people are looking on the positive side. Because no one's going to stop watching TV, we have to have viable alternatives for kids," said Dr. Michael Rich, director of the Center on Media and Child Health at Children's Hospital Boston.

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Online:

Pediatrics: http://www.pediatrics.org

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Contact AP Writer Donna Blankinship through Twitter (at)dgblankinship

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Yen resumes fall after G20, earnings worries hit stocks

LONDON (Reuters) - The yen resumed falling on Monday after Japan signaled it would push ahead with expansionist monetary policies having escaped criticism from the world's 20 biggest economies at the weekend.

European shares and industrial metals dropped on lingering worries about the economic outlook, especially for the euro zone. The risk of an inconclusive outcome in Italian elections at the weekend also added to investor concerns.

However, activity was curtailed by the closure of markets in the United States for the Presidents' Day holiday.

The yen, which has dropped 20 percent against the dollar since mid-November, fell further after financial leaders from the G20 promised not to devalue their currencies to boost exports and avoided singling out Japan for any direct criticism.

"Future yen direction will continue to be driven by domestic monetary policy from the Bank of Japan and improving international investor confidence, which are both driving the yen weaker," said Lee Hardman, currency analyst at Bank of Tokyo-Mitsubishi UFJ.

Japan's prime minister Shinzo Abe seized the opportunity to keep pressure on the central bank to loosen policy, telling the Japanese parliament that buying foreign bonds could be among options the Bank of Japan could adopt.

The result was the dollar rising 0.5 percent to 93.98 yen, near a 33-month peak of 94.47 yen set a week ago. The euro rose 0.2 percent to 125.32 yen, roughly midway between Friday's two-week low of 122.90 and a 34-month high of 127.71 yen hit earlier this month.

Strategists said that while the yen was likely to stay weak, its decline could lose momentum as investors wait for more clarity on who will be taking the helm at the Bank of Japan when the current governor steps down on March 19.

"The big unknown is who will get appointed as the new BoJ governor, so it is difficult to put on massive positions beforehand," said Saeed Amen, currency strategist at Nomura.

Abe is poised to nominate the new governor in the coming days. Sources have told Reuters that former financial bureaucrat Toshiro Muto, considered likely to be less radical than other candidates, was leading the field.

Elsewhere in the currency market, sterling hit a seven-month low against the dollar, after a key policymaker made comments about the need for further weakness and recent poor data which has kept alive worries of another British recession.

Sterling fell 0.15 percent to $1.5492 having earlier touched $1.5438, its lowest since July 13.

DATA LOOMS

A big week for data on the outlook for the world's economy weighed on other riskier asset markets following the recent dire fourth-quarter growth numbers for the euro zone and Japan, along with Friday's soft U.S. manufacturing figures.

In European markets, attention is focused on the euro area Purchasing Managers' Indexes for February and German sentiment indices due later in the week. These could affect hopes for a recovery this year.

Analysts expect Thursday's euro area flash PMI indices, which offer pointers to economic activity around six months out, to show growth stabilizing across the recession-hit region, leaving hopes for a recovery in the second half of 2013 intact.

Concerns over an inconclusive outcome in the Italian elections on Sunday and Monday have added to the weaker sentiment as a fragmented parliament could hamper a future government's efforts to reform the struggling economy.

The worries about the outlook for Italy were encouraging investors back into safe-haven German government bonds on Monday, with 10-year Bund yields easing 3.6 basis points to be around 1.63 percent.

"Political uncertainty will keep Bunds well bid this week," ING rate strategist Alessandro Giansanti said, adding that only better than expected economic data could create selling pressure on German debt in the near term.

Italian 10-year yields were 7 basis points higher on the day at 4.44 percent.

EARNINGS HIT

European equity markets were taking their lead from corporate earnings reports which have been reflecting the sluggish economic conditions across the region.

Danish brewer Carlsberg , which generates just over 60 percent of its sales in western Europe, became the latest to report a weaker-than-expected quarterly profit, sending its shares to their lowest level in almost a month.

The 6.8-percent drop for shares in the world's fourth biggest brewery helped send the FTSEurofirst 300 index <.fteu3> of top European shares down 0.3 percent at midday. Germany's DAX <.gdaxi>, France's CAC-40 <.fchi> and UK FTSE-100 <.ftse> ranged between 0.1 percent up and 0.3 percent lower.

Earlier, the effect of the G20 statement and the comments from Abe indicating a renewed drive to stimulate the Japanese economy lifted the Nikkei stock index <.n225> by 2.1 percent, near to its highest level since September 2008.

MSCI's world equity index <.miwd00000pus> was flat as markets extended a two-week period of consolidation that has followed the big run-up in January, when demand was buoyed by the efforts of central banks to stimulate the world economy.

Data from EPFR Global, a U.S.-based firm that tracks the flows and allocations of funds globally, shows investors pulled $3.62 billion from U.S. stock funds in the latest week, the most in 10 weeks after taking a neutral stance the prior week.

But demand for emerging market equities remained strong, with investors putting $1.81 billion in new cash into stock funds, the fund-tracking firm said.

CHINA RETURN

In the commodity markets, traders played catch-up after a week-long holiday last week in China, the world's second biggest consumer of many raw materials, which had kept activity subdued, with worries about the economic outlook weighing on sentiment.

Copper, for which China is the world's largest consumer, dipped to a near three-week low of $8,127.50 a metric ton (1.1023 tons) on the London futures market. Benchmark tin and nickel also touched three-week lows.

Bargain hunters helped gold rise from a six-month low to be up 0.2 percent to $1,611.87 an ounce with jewelers in China returning to the physical market after the Lunar New Year holiday.

Crude oil markets were mostly steady after some weak U.S. industrial production data on Friday [ID:nL1N0BF44A] was seen dampening demand, while tensions in the Middle East lent some support.

"We continue to see a mixed picture out of the United States. Industry output was lower than expected but that shouldn't affect the general upward direction," Olivier Jakob, analyst at Geneva-based Petromatrix, said.

Brent crude was flat at $117.66 a barrel after posting its first weekly loss since the first half of January. U.S. crude slipped 19 cents to $95.67.U.S. crude.

(Additional reporting by Marius Zaharia and Ron Bousso. Editing by Philippa Fletcher)

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