Saturday, March 2, 2013

Work continues near sinkhole that swallowed man

SEFFNER, Fla. (AP) ? Engineers worked gingerly Saturday to find out more about a slowly growing sinkhole that swallowed a Florida man in his bedroom, believing the entire house could eventually succumb to the unstable ground.

It could be days before officials decide whether they will attempt to recover Jeff Bush's body, and they were still trying Saturday to determine the extent of the sinkhole network and what kind of work might be safe. As the sinkhole grows, it may pose further risk to the subdivision and its homes.

Bush, 37, was in his bedroom Thursday night in Seffner ? a suburb of 8,000 people 15 miles east of downtown Tampa ? when the earth opened and took him and everything else in his room. Five others in the house escape unharmed.

On Saturday, the normally quiet neighborhood of concrete block homes painted in Florida pastels was jammed with cars as engineers, reporters, and curious onlookers came to the scene.

At the home next door to the Bushes, a family cried and organized boxes. Testing determined that their house also was compromised by the sinkhole, according to Hillsborough County Fire Rescue spokesman Ronnie Rivera. The family, which had evacuated Friday, was allowed to go inside for about a half-hour to gathering belongings.

Sisters Soliris and Elbairis Gonzalez, who live on the same street as Bushes, said rumors are swirling among neighbors, with people concerned for their safety.

"I've had nightmares," Soliris Gonzalez, 31, said. "In my dreams, I keep checking for cracks in the house."

They said the family has discussed where to go if forced to evacuate, and they've taken their important documents to a storage unit.

"The rest of it, this is material stuff, as long as our family is fine," Soliris Gonzalez said.

"You never know underneath the ground what's happening," added Elbairis Gonzalez, 30.

Experts say thousands of sinkholes erupt yearly in Florida because of the state's unique geography, though most are small and deaths rarely occur.

"There's hardly a place in Florida that's immune to sinkholes," said Sandy Nettles, who owns a geology consulting company in the Tampa area. "There's no way of ever predicting where a sinkhole is going to occur."

Most sinkholes are small, like one found Saturday morning in Largo, 35 miles away from Seffner. The Largo sinkhole, at about 10 feet long and several feet wide, is in a mall parking lot. Such discoveries are common throughout the year in Florida.

The state is prone because it sits on limestone, a porous rock that easily dissolves in water, with a layer of clay on top. The clay is thicker in some locations ? including the area where Bush became a victim ? making them even more prone to sinkholes.

Jonathan Arthur, the state geologist and director of the Florida Geological Survey, said other states sit atop limestone in a similar way, but Florida has additional factors ? extreme weather, development, aquifer pumping and construction ? that can cause sinkholes. "The conditions under which a sinkhole will form can be very rapid, or they can form slowly over time," he said.

But it remained unclear Saturday what, if anything, caused the Seffner sinkhole.

"The condition that caused that sinkhole could have started a million years ago," Nettles said.

Engineers had been testing in the area of the Bush house since 7 a.m. Saturday. By 10 a.m., officials moved media crews farther away so experts could test a home across the street.

Experts spent the previous day on the property, taking soil samples and running tests ? while acknowledging that the entire lot where Bush lay entombed was dangerous. On Saturday, officials were still not allowing anyone in the Bush home.

Jeremy Bush, who tried to rescue his brother when the earth opened, lay flowers and a stuffed lamb near the house Saturday morning and wept.

He said someone came to his home in the Tampa suburb of about 8,000 people a couple of months ago to check for sinkholes and other issues, apparently for insurance purposes, but found nothing wrong. State law requires home insurers to provide coverage against sinkholes.

"And a couple of months later, my brother dies. In a sinkhole," Bush said Friday.

The sinkhole, estimated at 20 feet across and 20 feet deep, caused the home's concrete floor to cave in around 11 p.m. Thursday as everyone in the Tampa-area house was turning in for the night. It gave way with a loud crash that sounded like a car hitting the house and brought Jeremy Bush running.

Engineers said they may have to demolish the small house, even though from the outside there appeared to be nothing wrong with the four-bedroom, concrete-wall structure, built in 1974.

___

Follow Lush at www.twitter.com/tamaralush

Online: http://www.dep.state.fl.us/geology/feedback/faq.htm(hash)17

www.firefighter-relief.com

Source: http://news.yahoo.com/continues-near-sinkhole-swallowed-man-173735822.html

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Google's Zopfli compression algorithm aims to speed up the web

Google's Zopfli compression aims to speed up the web

Google's latest attempt to squeeze data into increasingly smaller and smaller spaces comes with a rather silly sounding name inspired by Swiss bread. Zopfli is a compression algorithm that Mountain View claims can create files between three and eight percent smaller than Zlib. Of course, the trade off is that it requires between two and three times as much CPU time to finish shoving everything into a neat little package. Obviously this isn't an ideal solution for on-the-fly compression. However, decompression speeds are unchanged and don't require a special library to unpack. The most obvious use of the technology will be in the mobile space where static website elements an be compressed once and transferred frequently. That would mean quicker load times, less battery drain and, perhaps most importantly in this era of capped data plans, less bandwidth usage. For a few more details check out the source link.

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Via: CNET

Source: Google

Source: http://feeds.engadget.com/~r/weblogsinc/engadget/~3/fUnQV2NT9eM/

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Violence Against Women Act may help GOP's image (CNN)

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Friday, March 1, 2013

Where did that Russian meteor come from? Astronomers determine origins.

Relying on the many publicly available videos of the meteor that exploded over Russia's Ural Mountains earlier this month, a pair of Colombian astronomers say that they have calculated the space rock's orbit.

By Nancy Atkinson,?Universe Today / February 27, 2013

This dashcam video frame grab shows a meteor streaking across the sky of Russia?s Ural Mountains earlier this month.

Nasha gazeta/www.ng.kz/AP/File

Enlarge

Just a week after a huge fireball streaked across the skies of the Chelyabinsk region of Russia, astronomers published?a paper?that reconstructs the orbit and determines the origins of the space rock that exploded about 14-20 km (8-12.5 miles) above Earth?s surface, producing a shockwave that damaged buildings and broke windows.

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Researchers Jorge Zuluaga and Ignacio Ferrin at the University of Antioquia in Medellin, Colombia used a resource not always available in meteorite falls: the numerous dashboard and security cameras that captured the huge fireball. Using the trajectories shown in videos posted on YouTube, the researchers were able to calculate the trajectory of the meteorite as it fell to Earth and use it to reconstruct the orbit in space of the meteoroid before its violent encounter with our planet.

The results are preliminary, Zuluaga told Universe Today, and they are already working on getting more precise results. ?We are working hard to produce an updated and more precise reconstruction of the orbit using different pieces of evidence,? he said via email.

But through their calculations, Zuluaga and Ferrin determined the rock originated from the Apollo class of asteroids.
?
Using triangulation, the researchers used two videos specifically: one from a camera located in the Revolutionary Square in Chelyabinsk and one video recorded in the a nearby city of Korkino, along with the location of a hole in the ice in Lake Chebarkul, 70km west of Chelyabinsk. The hole is thought to have come from the meteorite that fell on February 15.

Zuluaga and Ferrin were inspired to use the videos by Stefen Geens, who writes the?Ogle Earth blog?and who pointed out that the numerous dashcam and security videos may have gathered data about the trajectory and speed of the meteorite. He used this data and Google Earth to reconstruct the path of the rock as it entered the atmosphere and showed that it matched an image of the trajectory taken by the geostationary Meteosat-9 weather satellite.

But due to variations in time and date stamps on several of the videos ? some which differed by several minutes ? they decided to choose two videos from different locations that seemed to be the most reliable.

From triangulation, they were able to determine height, speed and position of the meteorite as it fell to Earth.

This video is a virtual exploration of the preliminary orbit computed by Zuluaga & Ferrin

This is a virtual exploration of th epreliminary orbit computed by Zuluaga & Ferrin (2013). Scientific details can be found at arxiv:1302.5377

But figuring out the meteroid?s orbit around the Sun was more difficult as well as less precise. They needed six critical parameters, all which they had to estimate from the data using Monte Carlo methods to ?calculate the most probable orbital parameters and their dispersion,? they wrote in their paper. Most of the parameters are related to the ?brightening point? ? where the meteorite becomes bright enough to cast a noticeable shadow in the videos. This helped determine the meteorite?s height, elevation and azimuth at the brightening point as well as the longitude, latitude on the Earth?s surface below and also the velocity of the rock.

?According to our estimations, the Chelyabinski meteor started to brighten up when it was between 32 and 47 km up in the atmosphere,? the team wrote. ?The velocity of the body predicted by our analysis was between 13 and 19 km/s (relative to the Earth) which encloses the preferred figure of 18 km/s assumed by other researchers.?

They then used software developed by the US Naval Observatory called NOVAS, the Naval Observatory Vector Astrometry to calculate the likely orbit. They concluded that the Chelyabinsk meteorite is from the Apollo asteroids, a well-known class of rocks that cross Earth?s orbit.

According to?The Technology Review blog, astronomers have seen over 240 Apollo asteroids that are larger than 1 km but believe there must be more than 2,000 others that size.

However, astronomers also estimate there might be about 80 million out there that are about same size as the one that fell over Chelyabinsk: about 15 meters (50 feet) in diameter, with a weight of 7,000 metric tons.

In their ongoing calculations, the research team has decided to make future calculations not using Lake Chebarkul as one of their triangulation points.

?We are acquainted with the skepticism that the holes in the icesheet of the lake have been produced artificially,? Zuluaga told Universe Today via email. ?However I have also read some reports indicating that pieces of the meteoroid have been found in the area. So, we are working hard to produce an updated and more precise reconstruction of the orbit using different pieces of evidence.?

Many have asked why this space rock was not detected before, and Zuluaga said determining why it was missed is one of the goals of their efforts.

?Regretfully knowing the family at which the asteroid belongs is not enough,? he said. ?The question can only be answered having a very precise orbit we can integrate backwards at least 50 years. Once you have an orbit, that orbit can predict the precise position of the body in the sky and then we can look for archive images and see if the asteroid was overlooked. This is our next move!?

Read the team?s paper here.

Read more about the Apollo class of asteroids?here.

Nancy Atkinson is Universe Today's Senior Editor. She also is the host of the?NASA Lunar Science Institute podcast?and works with the?Astronomy Cast?and?365 Days of Astronomy?podcasts. Nancy is also a NASA/JPL Solar System Ambassador.

Connect with Nancy on?Facebook?|?Twitter?|?Google +?|?Website

Source: http://rss.csmonitor.com/~r/feeds/csm/~3/hEmi3PgomX8/Where-did-that-Russian-meteor-come-from-Astronomers-determine-origins

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Thursday, February 28, 2013

Matt Riddle cut from the UFC after second positive test for marijuana

Last week, Matt Riddle talked about how he mended fences with UFC brass over his positive test for marijuana. This week? He tested positive again and lost his job. According to MMA Junkie, Riddle tested positive for marijuana after his UFC on Fuel 7 bout with Che Mills, and was then cut from the UFC. Riddle also tested positive at UFC 149.

While it's true that Riddle has a medical marijuana card in Nevada, he knew full well that the UFC tested for the drug. Whether that drug should be banned is not the point. It is, Riddle knows it's banned, and Riddle broke the rules.

If your boss banned red shirts for no reason at all and you were suspended for wearing your favorite red shirt to work, are you going to wear it again? Yes, you can talk about how your boss is crazy for banning red shirts and work to change his mind on red shirts, but you can't wear the shirt and expect to slide by.

It's also important for UFC fighters to walk the line these days as the promotion looks to trim their roster. UFC president Dana White recently noted that they have approximately 100 fighters to trim from their roster. Riddle made it too easy for them to pick his name.

UPDATE: The UFC released a statement on Riddle's release, which reads in full:

Matthew Riddle tested positive for marijuana metabolites following his bout at UFC on FUEL TV 7 in London, England on February 16, 2013. This is Riddle?s second failed drug test for marijuana within the past seven months. Riddle previously failed a post-fight drug test due to marijuana following his UFC 149 victory over Chris Clements.

As such, the UFC organization is exercising its right to terminate Riddle for breach of his obligations under his Promotional Agreement as well as the UFC Fighter Conduct Policy. The UFC organization has a strict, consistent policy against the use of any illegal and/or performance-enhancing drugs, stimulants or masking agents. The outcome of the bout against Che Mills was changed to a no contest and the results of the positive test will be reported to the official Association of Boxing Commissions MMA record-keeper.

Source: http://sports.yahoo.com/blogs/mma-cagewriter/matt-riddle-cut-ufc-second-positive-test-marijuana-183853926--mma.html

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Video: Hundreds of flights canceled at Chicago O?Hare

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Source: http://video.msnbc.msn.com/nightly-news/50964279/

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Family daycare what should it be like


I was having his discussion with a friend today actually.

My experience with family daycare are not good ones.

The carer frequently pulled out of care and with no backup carer I still had to take time off work not only for my daughters ailments but also the carers too!

Then with my younger child I explored a local one and I too saw that it was filthy with the nap room full of mattresses strewn all over the floor and the area the kids played had no structure or function essentially it was a pile of kids dumped in one cornered off area of the house. Needless to say my daughter did not go there and I took them both to traditional proper care.

I don't trust family daycares ( by trust I mean trust that I won't be let down)
And I don't think they offer the same level of education and learning as traditional centers.

That's my opinion though and I say this only having experienced what I have, and I know probably not all family daycares are like this but it's all I've seen so obviously that's why my opinion is formed. I apologize in advance if I offend.

Source: http://www.bubhub.com.au/community/forums/showthread.php?489320-Family-daycare-what-should-it-be-like

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