Wednesday 27 February 2013

Threats of violence in Kenyan slums color election

NAIROBI, Kenya (AP) ? Dozens of shack homes have been burned to the ground in recent weeks in Mathare, Nairobi's most dangerous slum. Families are moving into zones controlled by their own clans, fearful of attacks between the tribes of Kenya's top two presidential candidates.

Kenya on Monday holds its first presidential election since the 2007 vote devolved into months of tribal violence that killed more than 1,000 people and displaced 600,000 from their homes. In a hopeful sign, this year's presidential candidates pledged at a weekend prayer rally to accept the outcome of the election and ensure violence doesn't again break out.

But the government-funded Kenya National Commission on Human Rights on Wednesday released a long list of physical attacks, hate speech and cases of ethnic intimidation Kenya has seen in recent weeks, exposing an undercurrent of tribal tension.

Those strains are on high display in Mathare, where at least seven people have died and 100 shacks burned in the last two months. Officially Mathare suffered 112 deaths during the 2007-08 election violence, though one policeman, who insisted on anonymity because he is not authorized to speak to the press, says Mathare really suffered over 370 killings.

Lewis Kamau is a Kikuyu but wears the bright orange hat of the Luo candidate, Raila Odinga. Kamau is not crossing party lines; he says the hat protects him from Luo attacks. He says he expects Luos to react negatively if Odinga loses.

"Violence will erupt because of results they don't like," he said. "I know these people. They won't accept the results."

Kamau ? who backs the Kikuyu candidate, Uhuru Kenyatta ? is standing 20 feet from a dirt lot scorched by fire, one of the shacks burned in Luo-on-Kikuyu attacks that began in late December and carried over into January.

"Just the other day they burned here and we didn't retaliate," he said, motioning to the charred lot. "We kept quiet. On Monday after the (election results) announcement, we will be ready for it."

Odinga or Kenyatta must win at least 50 percent of the vote in Monday's election, or the two will go to a second-round runoff, where attention will be even more focused on the two, heightening tensions further.

Many in Mathare, and across town in Nairobi's biggest slum, Kibera, say that Kenyans have learned from the 2007-08 violence, and won't repeat it. But many of those pronouncements come from people who assume their candidate will win.

"I think given the 2007 experience we will accept the results, even if, God forbid, we Luos lose. But I don't see us losing," said Daniel Omondo, an information technology specialist in Mathare.

The Kikuyu-Luo rift goes back decades, to when Odinga's father was asked by British colonialist to be Kenya's prime minister. The elder Odinga declined, saying that Jomo Kenyatta ? Uhuru's father ? was the rightful leader. Kenyatta eventually became president, with Odinga as his vice president. But a few years later Kenyatta forced Odinga out of the government, and the tribes' relations began a long slide downward.

In a small tin shack in Kibera where illegal, home-made whisky is served, one Odinga backer who gave his name as Christian Nyambega said the country needs its political leaders to accept the results and for the voters to remain calm. Then one of his drinking colleagues became agitated at the memory of the disputed 2007 election win of current President Mwai Kibaki, a Kikuyu.

"They're going to steal the vote the way they did for Kibaki. The Kikuyus are not the only tribe in Kenya. We have 42 tribes in Kenya," said the man, who gave his name only as Patrick, saying her feared government retribution.

Of the dozens of worrying cases of political tensions described by the human rights commission on Wednesday was one in which Kikuyu landlords in a low-income area of Nairobi ejected Luo tenants from their rental houses. It also said a member of Kenyatta's party has been linked to the use of gangs to threaten opponents. The report also documented cases of residents voluntarily moving to areas controlled by their own tribe.

One Western embassy official watching election developments closely said he expects less violence this election season than in 2007. But he said if 200 people die in violence, it might have to be considered progress compared with the more than 1,000 deaths in 2007-08.

There are other areas of concern in addition to the Luo-Kikuyu rift in Nairobi. A United Nations official who is watching election developments said that Kenya's Rift Valley has seen an influx of imported guns that didn't exist five years ago, and the Tana River area ? a region that has seen serious tribal fighting over the last year ? is likely to see more deaths.

The official said that violence in Mathare will be the worst in Nairobi, and that members of Amnesty International and Kenya's Truth, Justice and Reconciliation Commission have been receiving serious threats. The official said he could not be identified because he was not authorized to share election data.

Since Kenya's last election, the country now has a new constitution, a new judicial system that is lauded as less corrupted, and the police force is being overhauled. Many residents hold out hope that those changes will help ensure that government systems ? instead of massive street violence ? will be used to settle election disputes.

"The violence (in 2007-08) came because of the stealing of votes. The Odinga supporters thought it was rigged, so there was an outcry. This time we have a credible judicial commission and we have seen many changes in police," said Bernard Titus, a Kibera resident.

In addition, four prominent Kenyans ? including Kenyatta and his vice presidential candidate ? face charges at the International Criminal Court over allegations that they orchestrated the 2007 election violence. Some Kenyans believe those charges have reduced the chances that power brokers will hire thugs ? mostly young men and boys from the slums hired for $5 to $10 a day ? and send them into the street.

Grace Kalibo runs a small shop selling basic food goods in Kibera. She attended Sunday's massive peace rally where Odinga and Kenyatta shook hands and pledged peace. She believes Kenya will avoid the massive violence of five years ago. So does her neighbor, Lucas Awol, a 39-year-old bar owner where poor Kibera men gather on Sunday afternoons.

"This time they won't react at all. They are tired of war," said Awol. "This time it will be peaceful. People say so."

___

Associated Press reporter Tom Odula contributed to this report

Source: http://news.yahoo.com/threats-violence-kenyan-slums-color-election-182400085--politics.html

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Acidophilus and What Can It Be Used to Treat? | Gnet Health and ...

Everyone is aware of acid in the body and how we need it to help our bodies function on a day to day basis. We are also very aware of how bacteria can affect our lives, but of course we may not be experts on the type of bacteria we carry around with us. This feature will look at one particular form of bacteria and how it can be used to treat a number of ailments and its relationship to our bodies.

More about This Bacteria

Its full name is Lactobacillus acidophilus and we have this bacteria naturally in our body. It can be found predominantly in both the intestine and the vagina. This is where the link with acid comes in as it helps to keep an acidic environment internally and protect us from the growth of harmful bacteria. It is in fact, what we call a, ?pro-biotic?.

Where Else Can It Be Found?

Acidophilus naturally occurs in some foods including dairy products, and can be added along with other probiotics in other foods and supplements

What Can It Be Used to Treat?

Acidophilus is very good at protecting women from vaginal yeast infections. The best way to take on an infection is to hit them where they live by inserting the live, beneficial bacteria directly into the vagina. It can also help in yeast infections of the mouth. It brings fast relief from diarrhea caused through the ingestion of antibiotics. Urinary tract infections are another ailment we can treat with this protective bacteria along with parasites. More importantly it can strengthen the whole immune system!

Some experts say this friendly bacteria can help with depression and mood disorders.

You can take Acidophilus as a dietary supplement in capsule form

When you don?t have enough intestinal bacteria, harmful bacteria can take over and cause yeast infections, as well as intestinal problems. The most common way to take acidophilus is through tablets, or yogurt, which contains the live culture. If you have a problem taking the tablets, they can be added to yogurt that does not already contain them. Putting acidophilus to yogurt already containing it can cause a stomach upset.

?

How Does It Work?

Medical experts believe the bacteria works by helping the body to maintain a regular amount of bacteria within the stomach, vagina and intestines. When we have the right amounts then we can rest assured harmful bacteria can be taken care of. When it breaks down, it releases things like hydrogen peroxide creating a poisonous presence to unhealthy creatures in the body. It also plays a huge role in digestion, helping to produce a number of chemicals during the process.

Vitamin K and Lactase are produced by Acidophilus

According to S.K. Dash, author of ?The Consumer?s Guide to Probiotics,? taking probiotic supplements on an empty stomach can be a good thing. However; he also says some bacteria will pass into the intestines even if you take the supplement with food. You would take acidophilus on an empty stomach to prevent the bacteria from being killed by your stomach acid, which has a very high pH.

When you eat, your stomach will expand greatly to find space for the food. This fires off stretch receptors to stimulate production of stomach acid. This is why stomach acid levels are higher after you eat a meal. Taking acidophilus on an empty stomach allows the bacteria to pass through your digestive tract when stomach acid levels are lower.

But remember Lactobacillus acidophilus has not been approved by the FDA so it should not be substituted for prescription medications. It?s always best to talk to your doctor before taking any form of supplement, as like anything else some individuals could possibly suffer from side effects. If already on any form of medication the supplement could also prevent this from working in the way it should. Always be aware of this.

What about Dosage?

According to the professionals at the University of Maryland Medical Centre, a typical dose for treating diarrhea or vaginal infections is 1 to 2 billion colony-forming units each day. People attempting to keep their intestines in tip top shape take 1 to 15 billion colony-forming units every day. Your health store will give you the right advice as in many cases taking one capsule supplement each day can suffice. Again also make sure you talk to your health professional before taking in more of the bacteria.

So people are becoming more aware of what we call friendly bacteria and the great job they can do. These clever microorganisms are vital to the safe functioning of our bodies and are produced naturally. But of course we should be clear in taking supplements are bodies do actually need them. We also know this wonderful bacteria can help cure many ailments. So remember the name as a close friend?

Related posts:

Source: http://www.gnet.org/acidophilus-and-the-body/

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Veteran explorer stakes Russia's claim over the Arctic

MOSCOW (Reuters) - Russian polar explorer Artur Chilingarov made his name in the Soviet Union with a daring rescue of an ice-bound ship, then won international fame for planting Russia's flag under the ice cap, angering governments with rival claims over the Arctic.

Now at the age of 73, rather than folding away his maps, he is spearheading President Vladimir Putin's diplomatic push to secure more of the mineral-rich region.

"We don't want anything that belongs to anybody else, but if we prove it's ours, give it to us," a cigar-puffing Chilingarov told Reuters in an interview in his Moscow office dominated by a wall map of the Arctic seabed's topography.

On his desk stood a 10-cm (four-inch) high replica of the titanium Russian tricolor that he planted at the North Pole during his 2007 dive.

Huge reserves of Arctic oil and natural gas are expected to become more accessible as climate change melts the ice and technology advances.

For Putin, the race for the Arctic's natural wealth is a matter of national and personal pride at the start of his six-year, third term as president, and would be a victory from which he could reap political dividends.

Competition is fierce, with Norway, the United States, Canada and Denmark also seeking to secure their interests in the Arctic and where international energy majors such as ConocoPhillips and Statoil hope to succeed with potentially lucrative offshore projects.

After the failure of a first attempt to secure an additional 1.2 million square km (463,000 square miles) of the Arctic shelf, Russia intends to present more evidence to support its claim to the United Nations by the end of this year.

"Our economy today is largely based on what was developed in the Arctic regions - oil, gas, diamonds, gold, apatites - from Norilsk to Chukotka, thanks to the Soviet Union's policies of exploring and producing there," Chilingarov said.

"But back then we did not go into the sea. Resources are not endless and our task now is to leave future generations the same chances of economic stability as the Soviet Union left us."

NEW STRATEGY

The map on Chilingarov's wall was the result of 30 years of work by Soviet and then Russian scientists and was central to Moscow's first attempt in 2001 to win U.N. recognition that its Arctic shelf extends up to the North Pole.

Russia says an underwater mountain range known as the Lomonosov Ridge, which stretches across the Arctic Sea, is part of its own Eurasian landmass.

But the U.N. was not convinced and asked for more research to back the claim, rejected by Canada and Denmark, which say the formation is a geographical extension of their own land.

Chilingarov said the presentation of new evidence to back up Russia's claim was now a priority for the Kremlin.

"This is a very important task supported by the president. The aim is to do it by the end of this year," said the explorer. "We spare no efforts on expeditions to prove that Russia sits on Arctic resources ... We are very serious, very serious about this."

Russia puts its total shelf oil and gas reserves, from the Arctic to the Caspian Sea, at 100 billion tonnes of oil equivalent - enough to power the world for more than 20 years.

A new strategy for the Arctic, approved by Putin this month, underlines the importance of tapping more energy resources in a country whose $2.1 trillion economy is overly reliant on exports of energy resources.

Oil and gas sales now account for around half of Russia's budget revenues and commodities make up some 90 percent of Russian exports.

The cost of developing any new energy fields will be great.

Russia's flagship gas project on the Arctic shelf, the Gazprom-controlled Shtokman, is already on hold because of cost overruns after years of failed attempts to advance work at the field holding nearly 4 trillion cubic meters of gas.

Other countries, meanwhile, are pressing their own claims. A Danish expedition last year also collected data to support its claim to a vast tract in the Arctic including the North Pole.

RICH REWARDS

The rewards for the winners are potentially huge, with the U.S. Geological Survey estimating that 30 percent of the world's undiscovered natural gas and 15 percent of oil is in the Arctic.

Several companies, including Russia's Rosneft, Norway's Statoil and U.S.-based Exxon Mobil are already getting ready to drill in areas of melting sea ice, despite the risks, technological difficulties and costs.

After Chilingarov's North Pole dive in 2007, he was officially declared a hero of Russia, an award he added to the title of hero of the Soviet Union that he had won for the 1980s rescue operation, and his face still adorns postage stamps.

He is one of only four people to have been awarded both titles, and one of only two still alive.

"This is not the end of my expedition activity, but this was the pinnacle of it," Chilingarov said of the 2007 dive.

There is also an environmental challenge to face. Many environmental groups say the rush for the Arctic's natural resources risks destroying its fragile ecosystems, already under threat from climate change, as there are no adequate impact studies or emergency plans in case of a leak.

Last August, Greenpeace activists scaled Gazprom's Prirazlomnaya oil rig - Russia's first offshore oil development in the Arctic - to protest against drilling there and draw attention to the destruction of the area.

"As a polar explorer, obviously, I am for leaving the Arctic untouched. As a politician, I understand that Russia lives on its natural resources and should go on developing them," said Chilingarov.

(Editing by Timothy Heritage)

Source: http://news.yahoo.com/veteran-explorer-stakes-russias-claim-over-arctic-183824824--sector.html

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Tuesday 26 February 2013

Fan's NASCAR accident video back on YouTube

When a YouTube video is taken down for copyright infringement, most people get it: Don't post videos that are someone else's legal property. But when YouTube quickly re-posts a video it had pulled, that's an unusual step for the largest video-sharing site in the world.

At NASCAR's request, the Google-owned YouTube removed the 1 minute-and-16-second video taken by a high school student, Tyler Andersen, who was at the the NASCAR Nationwide Series auto race at Daytona Beach Saturday. His video captured part of the horrific accident that injured at least 28 fans, with chunks of debris flying into the stands.

When Andersen posted the video on YouTube, he was clear about his reason for doing so:

No disrespect intended to any of those injured or their families. I was just sharing my experience with a worldwide audience. I will continue to keep all affected by this incident in my prayers and I thank God for protecting me. Thank you.

NASCAR asked Google to take down the video, and it did. The Atlantic Wire points out that "NASCAR's legal fine print on any ticket says they own the rights to any video, sounds or data related to a race. The question became, eventually, whether or not that legal fine print extended to a fan video. Observers criticized NASCAR for taking the video down in the middle of a news story that was still unfolding."

But NASCAR says this wasn't about copyright infringement.

"The fan video of the wreck on the final lap of today's NASCAR Nationwide Series race was blocked on YouTube out of respect for those injured in today's accident," Steve Phelps, NASCAR's senior vice president and chief marketing officer, said on Saturday in a statement shared with NBC News.

"Information on the status of those fans was unclear and the decision was made to err on the side of caution with this very serious incident."

And so YouTube reversed course, allowing the video back up late Saturday, saying in a statement to The Washington Post, and again Monday to NBC News:

Our partners and users do not have the right to take down videos from YouTube unless they contain content which is copyright infringing, which is why we have reinstated the videos.

By late Monday, the video had done well over 600,000 views. NBC News has asked YouTube for comment, and will update this post when we hear back.

Phelps reiterated NASCAR's stance in a statement to NBC News: "This was never a copyright issue. This was never a censorship issue," he said. "The video ... was blocked out of respect for those injured in the accident. Google decided to lift that block."

What does it mean for most of us, who walk around with HD camcorders in our smartphones? Does the fact that Andersen's video continues to survive ? and even thrive ? mean that we can post our own footage of ticketed sporting events? Though tickets tend to warn against such behavior, are we really forbidden from taking a video and posting it on YouTube?

In many cases, yes. If the ticket is a contract, you may be in breach.

YouTube's "decision to allow the video to remain available, while a positive sign in terms of YouTube's willingness to scrutinize claims of copyright infringement, does not in any way prevent NASCAR from pursuing other remedies against the poster of the video ? including, potentially, enforcement of the contract embodied on the ticket or a direct claim of copyright infringement against the poster," Jeffrey P. Hermes, director of the Digital Media Law Project at Harvard's Berkman Center for Internet & Society, told NBC News Monday.

(In this instance, NASCAR has not indicated it would pursue such action.)

However, "NASCAR also cannot claim that the fan has granted NASCAR ownership of that recording based merely on the fine print on the back of a ticket," Hermes said.

Besides, he thinks there's "a serious question as to whether NASCAR has a valid copyright claim in an unscripted sporting event," such as Saturday's race. It's the kind of event, he said, that is "different from a scripted 'performance'" such as a rock concert "in which copyright might arise under U.S. law."

(Translation: Don't even think about posting that Beyonc? concert footage.)

Corynne McSherry, intellectual property director of the Electronic Frontier Foundation, told NBC News Monday that YouTube's decision to re-post the NASCAR video is "the right decision, because NASCAR does not hold the copyright in a fan video."

The EFF has seen this sort of thing before. When Showing Animals Respect and Kindness, an animal-rights activist group, filmed rodeos in order to demonstrate alleged abuse, the Professional Rodeo Cowboys Association fired back, requesting takedown of 13 videos. At the time, YouTube responded by eliminating the activists' account.

When the EFF took the case to court, it was settled in 2009. The agreement protects the group's "right to publicize their critiques."

"The (rodeo association) has no copyright claim in live rodeo events, just as NASCAR has no copyright claim in fan videos," says McSherry.

While the case didn't set a precedent, she said, "the law on this is not ambiguous: absent some other arrangement or exception (such as a work for hire), copyright goes to the person who created the video, not the person who created the event."

Check out Technology, GadgetBox, Digital Life and In-Game on Facebook, and on Twitter, follow Suzanne Choney.

Source: http://www.nbcnews.com/technology/technolog/fans-nascar-accident-video-returns-youtube-after-takedown-1C8537538

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Falcon Northwest Mach V (Triple Titan)


The launch of Nvidia's new GeForce GTX Titan graphics card has lit a fire underneath multiple boutique computer manufacturers. Falcon Northwest has built a new version of its Mach V desktop tower?the Mach V (Triple Titan)?to take advantage of the Titan's capabilities, with support for up to three of the new graphics cards and a six-core Intel Core i7 3970X CPU overclocked to 4.7GHz. The system's price tag as configured was $7,394. Yes, you read that right. The three graphics cards account for about $3000 of the eye-popping figure; this much power doesn't come cheap. The system's performance blew away the competition for the most part, setting a new standing for PC gaming. Thus, the Mach V (Triple Titan) takes the Editors' Choice for high-end gaming rigs.

Design and Features
The Mach V uses the same vertical chassis design as the Maingear Shift Super Stock (Core i7-3930K) ($5289 4.5); both cases orient video cards and components upwards to take advantage of the fact that hot air naturally rises. From the outside, the chassis design is simple, even understated, but the hardware inside the box is some of the most powerful that money can buy. There's 32GB of DDR3-1866 RAM, the aforementioned Intel Core i7-3970X, and a 256GB Crucial M4 SSD, backed up by a 2TB Western Digital Caviar Green hard drive. The entire system is powered by a 1200W PSU; optical storage comes courtesy of a 16x Asus DVD-RW drive.

The disadvantage to this triple-GPU configuration is that the GPUs consume every available slot; there's literally no room for any additional hardware. Falcon Northwest makes up for the lack of free PCI-Express ports with a whopping nine USB 2.0 ports and six USB 3.0 ports. Two of the latter are mounted at the top of the case for convenient access while working.

The vertical design presents two other challenges. First, a desk that's designed to exhaust hot air at the back may end up trapping that air if the system exhausts at the top. Second, there's the cabling issue. If you don't have many external drives or peripherals, the Mach V presents a very clean, crisp profile. Add three monitors' worth of cables, a few external drives, and a keyboard + mouse, and the top of the system looks like a rat's nest.

The trade-off is that cooling performance is typically better in a vertical case?and with three GPUs and a 4.7GHz overclocked CPU, the Mach V needs to balance cooling performance and noise. It does so quite well. The next-generation GPU Boost technology built into the Titan family keeps each GPU's temperature pegged at 80C. Customers can override this manually if they wish, but the system automatically adjusts frequencies to ensure that even a three-GPU system runs no risk of overheating.

Falcon Northwest Mach V (Triple Titan)

Performance
The three Titan graphics cards are the showcase of the system and its strongest point. The Mach V (Triple Titan) sweeps even the Maingear F131 Super Stock (GTX Titan) in our 3D benchmark tests. Its 3DMark 11 Extreme score of 12,505 is 18% faster than the previous record-holder ? the Falcon Northwest Mach V (Intel Core i7-3770K), which was equipped with a pair of dual-GPU GTX 690s (four GPUs in total). In Aliens vs. Predator at 1,920-by-1,080 with 4x anti-aliasing (AA) and 4x anisotropic filtering (AF) turned on, the Mach V (Triple Titan) turned in 222 frames per second (fps) compared with the dual-Titan-equipped Maingear F131's 182fps. Performance in version 3.0 of Unigine's Heaven benchmark test at 1,920-by-1080 with 4x AA / AF was 198fps, compared to 155fps for the Maingear F131.

In other areas, the Maingear F131 and Mach V (Triple Titan) came in neck and neck. Both systems completed a Handbrake decode in 23 seconds. The Maingear F131 led in PCMark 7 (6,523 vs. 6,241 for the Mach V) and in Photoshop CS6 (2 minutes, 35 seconds to apply a dozen filters, vs. the Mach V's time of 2:41). The Mach V (Triple Titan) outperformed Maingear F131 in Cinebench, where the hexa-core 3970 got to stretch its legs. The multithreaded Cinebench R11.5 score for the Mach V (Triple Titan) was 13.62. Only the Origin Genesis (Core i7-3930K), with its 4.9GHz CPU, was faster.

Those performance figures provide an accurate model of how the Falcon-Northwest compares to other gaming systems. What they don't explain is how Falcon and its boutique competitors have leveraged the new cards to create better gaming experiences. We had the opportunity to test the Mach V in a 5,760-by-1,080 configuration across three 27-inch displays. A standard 1,920-by-1,080 display contains two megapixels? 5,760-by-1080 more than triples that, to 6.2MP. For comparison, 2,560-by-1,600 is 4 MP.

Yes, three GTX Titan GPUs pushing nearly 200fps in Heaven is impressive. What's more impressive yet is seeing the Mach V (Triple Titan) maintain 90fps in the same benchmark test when running across three displays at once. It's not a capability that's limited to synthetic benchmark tests?while multi-monitor gaming is still not standard, many recent titles like Shogun 2, Serious Sam BFE, World of Warcraft, and Batman: Arkham City all support it.

With three GTX Titan GPUs, the Falcon Northwest Mach V (Triple Titan) is capable of fielding game experiences that other configurations don't offer. Serious Sam BFE at 5,760-by-1,080 with 4x super-sampled AA, 16x AF, and all GPU and CPU options set to maximum, for example, still maintains a consistent 75fps.

The three-monitor experience isn't perfect?the view on the side panels is often distorted and, in some games, magnifies the landscape and enemies to appear closer than they are. Despite these flaws, multi-monitor gaming support is growing, and the immersion in these games is superior to single-panel play. Game for a few hours across three monitors, and you'll find that dropping back to one is jarring.

That said, what's also jarring is the Mach V (Triple Titan)'s price tag. At $999 each, there's no such thing as a cheap Titan GPU, but gamers who are interested without having quite that much scratch to spare should consider a single GPU configuration built around one of Falcon's lower-cost alternatives like the Tiki or FragBox.

If you've got the funds, this is an excellent system. It's a configuration that can handle multi-monitor gaming, 3D gaming, or both without breaking a sweat. Given the strength of the underlying hardware, this Mach V could be the center of a gaming platform for years to come. Buyers who prefer to buy a high-end system and use it for a number of years rather than upgrading on a regular basis should give the Mach V (Triple Titan) serious consideration. Of course, if you want to use this to replace the high-end gaming rig you bought last year because that system was the "fastest," that's also your prerogative. Regardless, with its record-breaking performance, triple-monitor capability, and smart power-saving functionality, the Falcon Northwest Mach V (Triple Titan) earns our Editors' Choice for high-end gaming desktops.

More Desktop Reviews:
??? Maingear F131 Super Stock (GTX Titan)
??? Falcon Northwest Mach V (Triple Titan)
??? Zotac ZBox Nano AD12 Plus
??? HP Pavilion 20-b010z
??? HP Envy Phoenix h9-1320t
?? more

Source: http://feedproxy.google.com/~r/ziffdavis/pcmag/~3/cDU1aZ7ed-o/0,2817,2415720,00.asp

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Monday 25 February 2013

Nottingham technology in heart development breakthrough

Nottingham technology in heart development breakthrough [ Back to EurekAlert! ] Public release date: 25-Feb-2013
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Contact: Emma Thorne
emma.thorne@nottingham.ac.uk
44-115-951-5793
University of Nottingham

Technology developed at The University of Nottingham has been used in a breakthrough study aimed at developing the first comprehensive model of a fully functioning fetal heart.

The abdominal fetal ECG device, designed originally by academics in the University's Department of Electrical and Electronic Engineering and on commercial sale throughout the world since 2008 through the University spin-out company Monica Healthcare Ltd, has been used to observe living fetal hearts of babies in their mothers' wombs.

The collaborative study led by experts at The University of Leeds has discovered that the walls of the human heart are a disorganised jumble of tissue until relatively late in pregnancy with development much slower compared to other mammals.

Professor Barrie Hayes-Gill, Professor of Electronic Systems and Medical Devices at The University of Nottingham and joint founder and research director at Monica Healthcare said: "It's absolutely fantastic to see our device being used to detect fetal ECG morphology (i.e. ECG shape) in a non-invasive manner from the surface of the maternal abdomen. In this study the Monica device has been specifically deployed to observe the development of the fetal heart as it goes through gestation.

"It's an important development and we are delighted to see Nottingham technology playing such an integral part of the study. We expect that non-invasive morphological analysis during pregnancy and labour will become routine clinical practice in years to come as Monica continues to gain traction in the marketplace."

The fetal heart monitor is a portable, non-invasive device which attaches to the mother's abdomen and measures the electrical activity from the heart of the baby inside her womb. It is currently being used worldwide to monitor fetal heart rates during labour and delivery.

The device uses complex algorithms to correctly identify signals related to the fetal heart rate (FHR) using sensitive ECG-style electrodes. This method of using electrophysiological signals differs from current external monitoring devices that collect FHR and uterine activity data based on physical changes (e.g. change in reflected sound waves and changes on strain gauge) that may cause problems in data interpretation.

The monitor is simple to use, beltless, requires no wires to connect to the display or printer. There is also no need for the constant re-positioning of transducers, which is required with older technology and the mother is free to walk around if necessary.

As part of their study, which has been published in the Journal of the Royal Society Interface Focus, the team from the University of Leeds used the device to administer a weekly fetal ECG recording from 18 weeks until just before delivery.

The data from this, alongside two different MRI scans from the hearts of dead fetuses, was incorporated into a 3D computerised model built up using information about the structure, shape and size of the different components of the heart.

Early results suggest that the human heart may develop on a different timeline from other mammals. While the tissue in the walls of a pig heart develops a highly organised structure at a relatively early stage of a fetus' development, their work suggests there is little organisation in the human heart's cells until 20 weeks into pregnancy. Despite this, the human heart has a regular heartbeat from about 22 days.

Developing an accurate, computerised simulation of the fetal heart is critical to understanding normal heart developments in the womb and, eventually, to opening new ways of detecting and dealing with some functional abnormalities early in pregnancy.

Dr Eleftheria Pervolaraki, lead researcher on the project at the University of Leeds' School of Biomedical Sciences, said: "For a heart to be beating effectively, we thought you needed a smoothly changing orientation of the muscle cells through the walls of the heart chambers. Such an organisation is seen in the hearts of all healthy adult mammals.

"Fetal hearts in other mammals such as pigs, which we have been using as models, show such an organisation even early in gestation, with a smooth change in cell orientation going through the heart wall. But what we actually found is that such organisation was not detectable in the human fetus before 20 weeks," she said.

Professor Arun Holden, from The University of Leeds' School of Biomedical Sciences, said: "The development of the fetal human heart is on a totally different timeline, a slower timeline, from the model that was being used before. This upsets our assumptions and raises new questions. Since the wall of the heart is structurally disorganised, we might expect to find arrhythmias, which are a bad sign in an adult. It may well be that in the early stages of development of the heart arrhythmias are not necessarily pathological and that there is no need to panic if we find them. Alternatively, we could find that the disorganisation in the tissue does not actually lead to arrhythmia."

A detailed computer model of the activity and architecture of the developing heart will help make sense of the limited information doctors can obtain about the fetus using non-invasive monitoring of a pregnant woman.

Professor Holden said: "It is different from dealing with an adult, where you can look at the geometry of an individual's heart using MRI (Magnetic Resonance Imaging) or CT (Computerised Tomography) scans. You can't squirt x-rays at a fetus and we also currently tend to avoid MRI, so we need a model into which we can put the information we do have access to."

He added: "Effectively, at the moment, fetal ECGs are not really used. The textbooks descriptions of the development of the human heart are still founded on animal models and 19th century collections of abnormalities in museums. If you are trying to detect abnormal activity in fetal hearts, you are only talking about third trimester and postnatal care of premature babies. By looking at how the human heart actually develops in real life and creating a quantitative, descriptive model of its architecture and activity from the start of a pregnancy to birth, you are expanding electrocardiology into the fetus."

###


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Nottingham technology in heart development breakthrough [ Back to EurekAlert! ] Public release date: 25-Feb-2013
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Contact: Emma Thorne
emma.thorne@nottingham.ac.uk
44-115-951-5793
University of Nottingham

Technology developed at The University of Nottingham has been used in a breakthrough study aimed at developing the first comprehensive model of a fully functioning fetal heart.

The abdominal fetal ECG device, designed originally by academics in the University's Department of Electrical and Electronic Engineering and on commercial sale throughout the world since 2008 through the University spin-out company Monica Healthcare Ltd, has been used to observe living fetal hearts of babies in their mothers' wombs.

The collaborative study led by experts at The University of Leeds has discovered that the walls of the human heart are a disorganised jumble of tissue until relatively late in pregnancy with development much slower compared to other mammals.

Professor Barrie Hayes-Gill, Professor of Electronic Systems and Medical Devices at The University of Nottingham and joint founder and research director at Monica Healthcare said: "It's absolutely fantastic to see our device being used to detect fetal ECG morphology (i.e. ECG shape) in a non-invasive manner from the surface of the maternal abdomen. In this study the Monica device has been specifically deployed to observe the development of the fetal heart as it goes through gestation.

"It's an important development and we are delighted to see Nottingham technology playing such an integral part of the study. We expect that non-invasive morphological analysis during pregnancy and labour will become routine clinical practice in years to come as Monica continues to gain traction in the marketplace."

The fetal heart monitor is a portable, non-invasive device which attaches to the mother's abdomen and measures the electrical activity from the heart of the baby inside her womb. It is currently being used worldwide to monitor fetal heart rates during labour and delivery.

The device uses complex algorithms to correctly identify signals related to the fetal heart rate (FHR) using sensitive ECG-style electrodes. This method of using electrophysiological signals differs from current external monitoring devices that collect FHR and uterine activity data based on physical changes (e.g. change in reflected sound waves and changes on strain gauge) that may cause problems in data interpretation.

The monitor is simple to use, beltless, requires no wires to connect to the display or printer. There is also no need for the constant re-positioning of transducers, which is required with older technology and the mother is free to walk around if necessary.

As part of their study, which has been published in the Journal of the Royal Society Interface Focus, the team from the University of Leeds used the device to administer a weekly fetal ECG recording from 18 weeks until just before delivery.

The data from this, alongside two different MRI scans from the hearts of dead fetuses, was incorporated into a 3D computerised model built up using information about the structure, shape and size of the different components of the heart.

Early results suggest that the human heart may develop on a different timeline from other mammals. While the tissue in the walls of a pig heart develops a highly organised structure at a relatively early stage of a fetus' development, their work suggests there is little organisation in the human heart's cells until 20 weeks into pregnancy. Despite this, the human heart has a regular heartbeat from about 22 days.

Developing an accurate, computerised simulation of the fetal heart is critical to understanding normal heart developments in the womb and, eventually, to opening new ways of detecting and dealing with some functional abnormalities early in pregnancy.

Dr Eleftheria Pervolaraki, lead researcher on the project at the University of Leeds' School of Biomedical Sciences, said: "For a heart to be beating effectively, we thought you needed a smoothly changing orientation of the muscle cells through the walls of the heart chambers. Such an organisation is seen in the hearts of all healthy adult mammals.

"Fetal hearts in other mammals such as pigs, which we have been using as models, show such an organisation even early in gestation, with a smooth change in cell orientation going through the heart wall. But what we actually found is that such organisation was not detectable in the human fetus before 20 weeks," she said.

Professor Arun Holden, from The University of Leeds' School of Biomedical Sciences, said: "The development of the fetal human heart is on a totally different timeline, a slower timeline, from the model that was being used before. This upsets our assumptions and raises new questions. Since the wall of the heart is structurally disorganised, we might expect to find arrhythmias, which are a bad sign in an adult. It may well be that in the early stages of development of the heart arrhythmias are not necessarily pathological and that there is no need to panic if we find them. Alternatively, we could find that the disorganisation in the tissue does not actually lead to arrhythmia."

A detailed computer model of the activity and architecture of the developing heart will help make sense of the limited information doctors can obtain about the fetus using non-invasive monitoring of a pregnant woman.

Professor Holden said: "It is different from dealing with an adult, where you can look at the geometry of an individual's heart using MRI (Magnetic Resonance Imaging) or CT (Computerised Tomography) scans. You can't squirt x-rays at a fetus and we also currently tend to avoid MRI, so we need a model into which we can put the information we do have access to."

He added: "Effectively, at the moment, fetal ECGs are not really used. The textbooks descriptions of the development of the human heart are still founded on animal models and 19th century collections of abnormalities in museums. If you are trying to detect abnormal activity in fetal hearts, you are only talking about third trimester and postnatal care of premature babies. By looking at how the human heart actually develops in real life and creating a quantitative, descriptive model of its architecture and activity from the start of a pregnancy to birth, you are expanding electrocardiology into the fetus."

###


[ Back to EurekAlert! ] [ | E-mail | Share Share ]

?


AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert! system.


Source: http://www.eurekalert.org/pub_releases/2013-02/uon-nti022513.php

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Egypt's Mursi invites opposition to dialogue on elections

CAIRO (Reuters) - Egyptian President Mohamed Mursi invited opposition parties to a meeting on Monday to discuss concerns about upcoming parliamentary elections, which some parties have threatened to boycott, and agree on ways to ensure their fairness.

The invitation was similar to offers Mursi has made previously that were spurned, and the National Salvation Front opposition coalition immediately rejected the offer to meet.

"I tell everyone of all colors of the spectrum, to all dear brothers in different parties across Egypt, I approach them by name, by party, by persons to sit tomorrow and put down guarantees for transparent and fair elections," Mursi said in a recorded appearance on a television talk program on Mehwar channel aired late on Sunday.

Mursi also sought to dispel speculation that there were growing tensions between the army and the presidency. Some Egyptians, frustrated with what they view as Mursi's poor performance over the past seven months, have called for the military again to run Egypt.

Egypt's military has been a central force in politics since army officers staged an overthrow of the monarchy in 1952.

"There could never be disagreement between the armed forces and the presidency because the president and the armed forces are not two factions, they are one, and the Supreme Council of the Armed Forces is extremely professional," Mursi said on the show.

In addition, Mursi said he has a strong relationship with the intelligence apparatus.

"The General Intelligence is directly subject to the presidency of the republic, subject to me...I support, trust, protect and love them, and wish them well because through them Egypt's security is protected internally and externally," he said.

Egypt on Saturday brought forward by five days the start of the elections to April 22 to defuse a dispute with the Christian community, which makes up a tenth of the population, after they said the original schedule would conflict with their Easter celebrations.

TRANSITION TO DEMOCRACY

Mursi said the elections could conclude Egypt's turbulent transition to democracy, which began two years ago with the overthrow of autocrat Hosni Mubarak by popular protests.

Various opposition groups have said they would boycott the legislative elections, a move that could delegitimize the electoral process, which is due to take place in four stages and culminate with the sitting of the new lower house of parliament in July.

The opposition has said that by deciding to hold elections Mursi and his Muslim Brotherhood movement trivialized the deaths of around 60 people in anti-government protests since January and was only concerned with securing parliamentary seats.

They accused the Brotherhood of seeking to dominate all state institutions and said the electoral constituencies were "tailor-made" for the Brotherhood's Freedom and Justice Party and that there were no real guarantees of fair elections.

The National Salvation Front (NSF), which groups a number of parties opposed to the Islamists, is due to decide in the coming week whether to join the boycott as a movement. But it immediately rebuffed Mursi's call for a dialogue on elections.

"It makes me angry. You take the decision (to hold elections) and then say, 'Come to talk to me'," Khaled Dawoud, an NSF spokesman, told Reuters.

Some of the NSF's main parties have individually said they would boycott, including the Dostour party of Mohamed ElBaradei, a former U.N. nuclear agency chief. He drew comparisons with the last parliamentary polls to be held under Mubarak in 2010, a vote that was widely seen as rigged.

Mursi's television comments were aired almost seven hours later than the time the presidency had announced and well past midnight, which provoked dismissive reactions from opponents. Bassem Youssef, a popular satirist who lampoons public figures, wrote on Twitter: "Has anyone seen Mohammed Mursi?"

A joke from political activists that made the rounds on social networking sites ran: "According to which timing is the program being aired? Egypt's, Qatar's or the United States?" referring to the United States' and Qatar's foreign policies, seen as backing the Brotherhood.

(Reporting by Shaimaa Fayed; Editing by Cynthia Osterman)

Source: http://news.yahoo.com/egypts-mursi-invites-opposition-dialogue-elections-021205648.html

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How to suppress telemarketing calls on the iPhone

There are few first-world problems as infuriating as spammy telemarketing calls. Sadly, carrier networks don't seem to have their interests aligned with customers enough to prevent the wasting of our voice minutes, not to mention our life minutes, and iOS doesn't make blocking calls or messages easy either. And, of course, they always seem to come in just as we're sitting down to eat, relax, or in my case, while traveling so I can get stuck paying exorbitant roaming fees as well. Luckily, developer David Smith was annoyed enough to find a work around.

I hate getting called by telemarketers or other spammers on my iPhone. I get relatively few calls each day so when one happens it tends to attract my attention quite strongly. Things like the Do Not Call registry can help but they cannot eliminate the problem of getting these spam calls.

Check out his solution. It's smart, and it could likely be applied to other tele-annoyances as well...

Source: David Smith



Source: http://feedproxy.google.com/~r/TheIphoneBlog/~3/_E-UfkixRHo/story01.htm

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Sunday 24 February 2013

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These posts really helped me I cant wait to start now. This is going to really help my writing skills.

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CAPTION THE ARTWORK: Sandro Botticelli's 'Portrait Of A Youth With A Medal' (PHOTO)

In 1475 Renaissance favorite Sandro Botticelli took a break from painting goddesses and muses to capture a particularly chiseled youth and his bling medal.

botticelli

"Portrait of a Youth with a Medal" depicts haughty looking youth bearing a Cosimo de' Medici medal and some Renaissance swagger. While his identity remains unknown, one thing is for certain: this youth is a badass with a bob.

If the anonymous youth was able to post his glamour shot on Facebook, what do you think would be his snarky comment? Go on readers, caption it!

Earlier on HuffPost:

"; var coords = [-5, -72]; // display fb-bubble FloatingPrompt.embed(this, html, undefined, 'top', {fp_intersects:1, timeout_remove:2000,ignore_arrow: true, width:236, add_xy:coords, class_name: 'clear-overlay'}); });

Source: http://www.huffingtonpost.com/2013/02/24/caption-this-sandro-botticelli-portrait-of-a-youth-with-a-medal_n_2734463.html

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Former Maldives president leaves Indian Embassy

The former president of the Maldives left the country's Indian Embassy on Saturday, after taking refuge there for 10 days because he said his life was under threat.

Mohamed Nasheed arrived at the embassy on Feb. 13 after a court ordered his arrest for not attending a hearing on charges that he illegally ordered the detention of a senior judge, a move that led to his ouster from power last year. The court issued a second warrant during Nasheed's stay at the embassy, but police were unable to execute it because they were not allowed to enter a diplomatic building.

Nasheed has said the case against him is politically motivated to disqualify him from contesting the presidential election scheduled for September.

Nasheed did not explain why he left the embassy on Saturday, but said he believed he would be free to participate in politics. His party had said earlier that Nasheed would leave the embassy only if a caretaker government was appointed to oversee the election. The party says President Mohammed Waheed Hassan, a former deputy to Nasheed, cannot be trusted to hold a fair election.

Government spokesman Masood Imad said Saturday that no compromise had been reached with Nasheed regarding the case against him.

India's foreign ministry said in a statement that two visiting diplomats held discussions with the government and Nasheed to bring about a breakthrough. It said Nasheed entered the embassy "on his own volition and had similarly decided to leave on his own."

Nasheed became the first democratically elected president of this Indian Ocean archipelago in 2008, ending a 30-year autocracy. He resigned last year following weeks of public protests over his order to arrest the judge.

An inquiry commission last year ruled out Nasheed's claim that he was ousted in a coup.

Source: http://www.miamiherald.com/2013/02/23/3249422/former-maldives-president-leaves.html

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Saturday 23 February 2013

Macungie mayor goes to state Supreme Court seeking legal fees

Macungie Mayor Rick Hoffman is going to the state's highest court to seek reimbursement of attorney fees he has racked up during a lengthy legal battle with the borough and its police force.

Hoffman attorney Jeffrey Dimmich has filed a petition in state Supreme Court, asking it to consider the legal fee issue, which Commonwealth Court judges said should be decided in Lehigh County Court.

Dimmich claims in a court filing that his client should be entitled to more than $4,000 that Borough Code allows him to receive from the borough in legal cases that pit him against Borough Council.

Both Hoffman and the borough have accumulated bills exceeding $100,000 for legal work related to the dispute over the mayor's power and authority over the police force.

Dimmich claims in court papers that the dispute was "self-created" by council.

"This matter is of great importance because if council or its solicitor can self-create a conflict and hide behind [Borough Code provisions], the mayor is basically powerless to enforce his duties under the Borough Code because he would be forced to spend his personal money to enforce his official duties," Dimmich wrote in the court filing.

He added that under those circumstances the "electorate is disenfranchised as their vote for the mayor is effectively negated."

Attorney Jeffrey Stewart, who is representing the borough in the case, declined to comment.

Dimmich's request came two weeks after Lehigh County District Attorney Jim Martin asked the high court to hear his appeal related to the case.

Martin, who intervened in the case between the borough and mayor, asked for a clarification of a Commonwealth Court ruling upholding a series of decisions by Lehigh County Judge Michele A. Varricchio, who ruled that Hoffman is Macungie's chief law enforcement officer and that he is entitled to unrestricted access to the police station and its files.

Martin said a portion of the decision related to information the mayor is entitled to see was "confusing and in need of clarification."

Mayor Hoffman, whose four-year term expires at the end of 2013, theoretically is represented by the borough's solicitor, who also represents Borough Council. Because the solicitor can't represent both council and the mayor, the mayor was forced to seek his own attorney.

Dimmich argues in court papers that Hoffman "was forced into litigation by a self-created conflict in bad faith and in total disregard of the law by both Borough Council and the District Attorney."

Dimmich wrote that council had a "great dislike for the mayor," and that during an October 2010 meeting a councilman suggested that the borough "drag out" the legal case in order to create legal bills for the mayor that he wouldn't be able to afford.

Dimmich argues that the mayor had no choice but to take legal action because of a "full-fledged, frontal attack" on his powers. He points out in court papers that the borough's solicitor penned a February 2010 memo saying that the mayor was in charge of the police department, was entitled to a copy of the police department's schedule and investigative files.

Dimmich says the mayor was denied much of what he was entitled to before the issues went to court.

Hoffman has said he won't run in this year's election.

patrick.lester@mcall.com

610-820-6764

Source: http://www.mcall.com/news/local/mc-macungie-mayor-hoffman-supreme-court-appeal-20130222,0,6683348.story?track=rss

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Sefko: Ex-Mavs coach Don Nelson says Morrow is 2nd-best ?pure shooter? he?s coached

Click here to read Eddie Sefko?s entire column.

NEW ORLEANS ? The Mavericks didn?t have to go far to get the lowdown on the player they finally settled on to help them at the trade deadline.

When Don Nelson coached at Golden State, he was there for Anthony Morrow?s first two seasons in the NBA. When Nelson?s son, Mavericks president of basketball operations Donnie Nelson called to get a scouting report, he liked what he heard.

?Next to Chris Mullin,? the former Mavericks coach said, ?[Morrow?s] probably the best pure shooter I ever coached. You?re going to love him.?

The Mavericks clearly felt they needed a high-quality shooter more than they needed a tough-nosed defender as the NBA trade deadline passed Thursday afternoon.

They didn?t exactly blow the league away with their acquisition of the 27-year-old Morrow, but by giving up Dahntay Jones, the Mavericks made a commitment to getting Dirk Nowitzki, Vince Carter and Shawn Marion some help in the form of perimeter shooting.

Morrow is a career 42.5 percent 3-point shooter. He had trouble getting on the court this season with the Atlanta Hawks. But he was a double-figure scorer his first four seasons in the league, including a career-best 13 points per game in his second season with the Warriors.

?From training camp, we?ve talked about the lack of shooting,? Donnie Nelson said. ?It?s been a pretty significant hole. And to have a guy step in who?s one of the top stretch shooters maybe in the history of the league and provide some help there was just really, really important to us.?

It certainly wasn?t the sort of big splash that will turn around the Mavericks? season. They are five games below .500 and 4 1/2 games out of the final playoff spot. It will remain an uphill climb, and they know Morrow won?t be any sort of savior. But he can help. And at this point, that?s what the Mavericks need.

And they did it without sacrificing flexibility in the summer. Morrow?s $4 million expiring contract is $1 million more than Jones?, which also ends after this season.

And while defense wins in the NBA, this version of the Mavericks needs scoring from the perimeter since it has been difficult at times to put points on the board from closer range.

?He?s one of the best shooters in the game,? Mavericks coach Rick Carlisle said of Morrow. ?And you can never have too many shooters.

Source: http://mavsblog.dallasnews.com/2013/02/sefko-ex-mavs-coach-don-nelson-says-morrow-is-2nd-best-pure-shooter-hes-coached.html/

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Pope's Twitter account to exit with him

At the same time as Pope Benedict XVI leaves office on February 28, his Twitter presence as @Pontifex will also come to an end, according to Vatican Radio.

The news may come as a sad blow to the more than 2 million people who've signed up to follow his tweets in nine languages since his account was launched with fanfare two-and-a-half months ago.

About 1.5 million of those people follow the English language feed, with nearly 700,000 following him in Spanish and just short of 335,000 in Italian. About 22,500 people follow @Pontifex in Latin.

The account will be closed to coincide with the 85-year-old pope's formal departure from office at 8 p.m. local time, Vatican Radio said.

"It seems unimaginable that one could continue to use a communication tool so popular and powerful during the 'sede vacante' period," Vatican Radio said, referring to the time during which the seat will be empty.

"From choice, the Pontifex profile was not personalized, but it clearly refers to the person of the pope."

It's not yet clear whether whoever is chosen to succeed Benedict, who cited the frailty of age as the reason for his departure, will also use Twitter to reach out to some of the 1.5 billion Roman Catholics around the world.

On Feb. 10, the day before the pope announced his shock resignation, @Pontifex tweeted: "We must trust in the mighty power of God's mercy. We are all sinners, but His grace transforms us and makes us new."

Only two tweets have been posted since in English, both relating to the Lent period.

According to Vatican Radio, Benedict is likely to offer his last tweet on Feb. 27, the same day that he will give his final general audience to huge crowds expected to gather in St. Peter's Square in Vatican City.

Source: http://www.ksbw.com/news/Pope-s-Twitter-account-to-exit-with-him/-/1852/19033284/-/kpqna3/-/index.html?absolute=true

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Friday 22 February 2013

Secrets of human speech uncovered

Thursday, February 21, 2013

A team of researchers at UC San Francisco has uncovered the neurological basis of speech motor control, the complex coordinated activity of tiny brain regions that controls our lips, jaw, tongue and larynx as we speak.

Described this week in the journal Nature, the work has potential implications for developing computer-brain interfaces for artificial speech communication and for the treatment of speech disorders. It also sheds light on an ability that is unique to humans among living creatures but poorly understood.

"Speaking is so fundamental to who we are as humans ? nearly all of us learn to speak," said senior author Edward Chang, MD, a neurosurgeon at the UCSF Epilepsy Center and a faculty member in the UCSF Center for Integrative Neuroscience. "But it's probably the most complex motor activity we do."

The complexity comes from the fact that spoken words require the coordinated efforts of numerous "articulators" in the vocal tract ? the lips, tongue, jaw and larynx ? but scientists have not understood how the movements of these distinct articulators are precisely coordinated in the brain.

To understand how speech articulation works, Chang and his colleagues recorded electrical activity directly from the brains of three people undergoing brain surgery at UCSF, and used this information to determine the spatial organization of the "speech sensorimotor cortex," which controls the lips, tongue, jaw, larynx as a person speaks. This gave them a map of which parts of the brain control which parts of the vocal tract.

They then applied a sophisticated new method called "state-space" analysis to observe the complex spatial and temporal patterns of neural activity in the speech sensorimotor cortex that play out as someone speaks. This revealed a surprising sophistication in how the brain's speech sensorimotor cortex works.

They found that this cortical area has a hierarchical and cyclical structure that exerts a split-second, symphony-like control over the tongue, jaw, larynx and lips.

"These properties may reflect cortical strategies to greatly simplify the complex coordination of articulators in fluent speech," said Kristofer Bouchard, PhD, a postdoctoral fellow in the Chang lab who was the first author on the paper.

In the same way that a symphony relies upon all the players to coordinate their plucks, beats or blows to make music, speaking demands well-timed action of several various brain regions within the speech sensorimotor cortex.

Brain Mapping in Epilepsy Surgery

The patients involved in the study were all at UCSF undergoing surgery for severe, untreatable epilepsy. Brain surgery is a powerful way to halt epilepsy in its tracks, potentially completely stopping seizures overnight, and its success is directly related to the accuracy with which a medical team can map the brain, identifying the exact pieces of tissue responsible for an individual's seizures and removing them.

The UCSF Comprehensive Epilepsy Center is a leader in the use of advanced intracranial monitoring to map out elusive seizure-causing brain regions. The mapping is done by surgically implanting an electrode array under the skull on the brain's outer surface or cortex and recording the brain's activity in order to pinpoint the parts of the brain responsible for disabling seizures. In a second surgery a few weeks later, the electrodes are removed and the unhealthy brain tissue that causes the seizures is removed.

This setting also permits a rare opportunity to ask basic questions about how the human brain works, such as how it controls speaking. The neurological basis of speech motor control has remained unknown until now because scientists cannot study speech mechanisms in animals and because non-invasive imaging methods lack the ability to resolve the very rapid time course of articulator movements, which change in hundredths of seconds.

But surgical brain mapping can record neural activity directly and faster than other noninvasive methods, showing changes in electrical activity on the order of a few milliseconds.

Prior to this work, the majority of what scientists knew about this brain region was based on studies from the 1940's, which used electrical stimulation of single spots on the brain, causing a twitch in muscles of the face or throat. This approach using focal stimulation, however, could never evoke a meaningful speech sound.

Chang and colleagues used an entirely different approach to studying the brain activity during natural speaking brain using the implanted electrodes arrays. The patients read from a list of English syllables ? like bah, dee, goo. The researchers recorded the electrical activity within their speech-motor cortex and showed how distinct brain patterning accounts for different vowels and consonants in our speech.

"Even though we used English, we found the key patterns observed were ones that linguists have observed in languages around the world ? perhaps suggesting universal principles for speaking across all cultures," said Chang.

###

University of California - San Francisco: http://www.ucsf.edu

Thanks to University of California - San Francisco for this article.

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Source: http://www.labspaces.net/126947/Secrets_of_human_speech_uncovered

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