Thursday, February 28, 2013

NASA's Van Allen Probes reveal a new radiation belt around Earth

Feb. 28, 2013 ? NASA's Van Allen Probes mission has discovered a previously unknown third radiation belt around Earth, revealing the existence of unexpected structures and processes within these hazardous regions of space.

Previous observations of Earth's Van Allen belts have long documented two distinct regions of trapped radiation surrounding our planet. Particle detection instruments aboard the twin Van Allen Probes, launched Aug. 30, quickly revealed to scientists the existence of this new, transient, third radiation belt.

The belts, named for their discoverer, James Van Allen, are critical regions for modern society, which is dependent on many space-based technologies. The Van Allen belts are affected by solar storms and space weather and can swell dramatically. When this occurs, they can pose dangers to communications and GPS satellites, as well as humans in space.

"The fantastic new capabilities and advances in technology in the Van Allen Probes have allowed scientists to see in unprecedented detail how the radiation belts are populated with charged particles and will provide insight on what causes them to change, and how these processes affect the upper reaches of Earth's atmosphere," said John Grunsfeld, NASA's associate administrator for science in Washington.

This discovery shows the dynamic and variable nature of the radiation belts and improves our understanding of how they respond to solar activity. The findings, published February 28 in the journal Science, are the result of data gathered by the first dual-spacecraft mission to fly through our planet's radiation belts.

The new high-resolution observations by the Relativistic Electron Proton Telescope (REPT) instrument, part of the Energetic Particle, Composition, and Thermal Plasma Suite (ECT) aboard the Van Allen Probes, revealed there can be three distinct, long-lasting belt structures with the emergence of a second empty slot region, or space, in between.

"This is the first time we have had such high-resolution instruments look at time, space and energy together in the outer belt," said Daniel Baker, lead author of the study and REPT instrument lead at the Laboratory for Atmospheric and Space Physics (LASP) at the University of Colorado in Boulder. "Previous observations of the outer radiation belt only resolved it as a single blurry element. When we turned REPT on just two days after launch, a powerful electron acceleration event was already in progress, and we clearly saw the new belt and new slot between it and the outer belt."

Scientists observed the third belt for four weeks before a powerful interplanetary shock wave from the sun annihilated it. Observations were made by scientists from institutions including LASP; NASA's Goddard Space Flight Center in Greenbelt, Md.; Los Alamos National Laboratory in Los Alamos, N.M.; and the Institute for the Study of Earth, Oceans, and Space at the University of New Hampshire in Durham.

Each Van Allen Probe carries an identical set of five instrument suites that allow scientists to gather data on the belts in unprecedented detail. The data are important for the study of the effect of space weather on Earth, as well as fundamental physical processes observed around other objects, such as planets in our solar system and distant nebulae.

"Even 55 years after their discovery, the Earth's radiation belts still are capable of surprising us and still have mysteries to discover and explain," said Nicky Fox, Van Allen Probes deputy project scientist at the Johns Hopkins University Applied Physics Laboratory in Laurel, Md. "We thought we knew the radiation belts, but we don't. The advances in technology and detection made by NASA in this mission already have had an almost immediate impact on basic science."

The Van Allen Probes are the second mission in NASA's Living With a Star Program to explore aspects of the connected sun-Earth system that directly affect life and society. Goddard manages the program. The Applied Physics Laboratory built the spacecraft and manages the mission for NASA.

For more information on the Van Allen Probes, visit: http://www.nasa.gov/vanallenprobes

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Story Source:

The above story is reprinted from materials provided by NASA.

Note: Materials may be edited for content and length. For further information, please contact the source cited above.


Journal Reference:

  1. D. N. Baker, S. G. Kanekal, V. C. Hoxie, M. G. Henderson, X. Li, H. E. Spence, S. R. Elkington, R. H. W. Friedel, J. Goldstein, M. K. Hudson, G. D. Reeves, R. M. Thorne, C. A. Kletzing, and S. G. Claudepierre. A Long-Lived Relativistic Electron Storage Ring Embedded in Earth's Outer Van Allen Belt. Science, 2013; DOI: 10.1126/science.1233518

Note: If no author is given, the source is cited instead.

Disclaimer: Views expressed in this article do not necessarily reflect those of ScienceDaily or its staff.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/space_time/nasa/~3/6au8zstDb1E/130228155430.htm

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iTunes in the Cloud looks to be hitting more of Europe with TV series, films (update: confirmed)

iTunes in the Cloud looks to be hitting parts of Europe with TV series, films

While stateside users might complain that we get all the good stuff in Europe first, Apple's iTunes in the Cloud for movies and TV shows has finally got around to rolling in to France and other parts of Europe, eons after it came out in the US. We confirmed that the new functionality works in France, which lets you buy films and TV shows from a computer, Apple TV or iOS device, then download it for free from the cloud on another. Others have reported by Twitter that it's working in Holland and Sweden as well, making it the first big move for the service since it rolled into the UK, Australia and Canada last summer. Until now, users in those nations were only able to download books, apps and music purchased in iTunes from the cloud. There's still no word from Apple about the move, however, and the list of supported countries hasn't been updated for those features -- so we'll enjoy it for now and hope Cupertino doesn't change its mind.

Update: We've confirmed with Apple that this rollout has indeed taken place. Belgium, Cyprus, Denmark, Finland, Greece, Luxembourg, Malta, the Netherlands, Norway and Sweden all get movies in the cloud, while France gets both movies and TV series in the cloud.

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Via: TNW

Source: http://www.engadget.com/2013/02/27/itunes-in-the-cloud-hits-europe/

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Losttime Illustration and Design: Puzzle Communications Logo

This is a logo I have just completed for a new marketing and communications agency ?in Buckinghamshire (www.puzzle-communications.com)

The client came to me with the name 'Puzzle', maybe use puzzle?pieces?and to use purple as the lead brand colour but apart from that it was a pretty open brief.

First stage designs in mono

Chosen routes developed further and colour added

The final Puzzle Communications logo


Source: http://losttimedesign.blogspot.com/2013/02/puzzle-communications-logo.html

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Wednesday, February 27, 2013

Mental health-substance use services in hospitals up after parity law, finds new report

Mental health-substance use services in hospitals up after parity law, finds new report [ Back to EurekAlert! ] Public release date: 27-Feb-2013
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Contact: Jemma Weymouth
jweymouth@burnesscommunications.com
301-652-1558
Burness Communications

HCCI analysis suggests jump in spending on mental health-substance use admissions

WASHINGTON, DC The Paul Wellstone and Pete Domenici Mental Health Parity and Addiction Equity Act of 2008 ("Parity Act") increased access to mental health and substance use services in hospitals, yet consumers continued to pay more out-of-pocket for substance use admissions than for other types of hospital admissions, finds a new Health Care Cost Institute (HCCI) report.

The report is one of the first of its kind to look at hospital spending, utilization, prices, and out-of-pocket payments for mental health and substance use admissions for those younger than age 65 with employer-sponsored health insurance. Between 2007 and 2011, spending on hospital admissions for mental health and substance use grew faster than spending on medical/surgical admissions. In 2011, spending on mental health and substance use admissions was driven by an uptick in utilization.

The Parity Act enhanced the 1996 Mental Health Parity Act by extending parity to substance use treatment. Under the Parity Act, large group health plans were required to make behavioral health coverage rules similar to medical/surgical benefit rules. Large group plans were also required to make copays, deductibles, coinsurance, and out-of-pocket maximums for behavioral health care equivalent with the most common medical/surgical treatments.

Substance Use Admissions Surge

In one of the first analyses of the law's impact, HCCI found substance use admissions grew by 19.5 percent in 2011 for people younger than age 65 and covered by employer sponsored health insurance. By comparison, between 2010 and 2011, mental health admissions grew by 5.9 percent and medical/surgical admissions declined by 2.3 percent for this population.

"There's extraordinary growth in hospital substance use admissions by people with private health insurance since 2009," said HCCI Board Chairman Martin Gaynor, E.J. Barone Professor of Economics and Health Policy at Carnegie Mellon University. "What is driving these increases is unclear."

Out-of-Pocket Spending After Parity Law

In 2011, out-of-pocket payments for mental health admissions more closely aligned with payments for medical/surgical admissions. However, the amount spent out-of-pocket on substance use admissions remained higher than payments for medical/surgical admissions. Out-of-pocket payments for substance use hospital admissions grew at twice the rate of out-of-pocket payments for mental health or medical/surgical admissions between 2010 and 2011.

"While it is too soon to understand the full impact of the Parity Act, we need to be looking carefully to make sure we understand why these hospital out-of-pocket payments may be growing at a faster pace than medical spending. Moreover, while there is widespread interest in better understanding the drivers of cost and utilization, the drivers, whether they be benefit design, the economy, or something else, need to be monitored so we better understand them," said HCCI Executive Director Dr. David Newman.

Jump in Spending Accompanies Higher Use

Per person spending on mental health inpatient admissions grew by 11.7 percent to $21.33 in 2011. Substance use admission spending per person rose 28.9 percent to $10.06 in 2011. In contrast, per capita hospital spending for medical/surgical admissions grew 4.3 percent to $769.16 in 2011. Although relatively small amounts are spent per person on mental health and substance use admissions, the share of total hospital spending on these conditions grew between 2007 and 2011. Mental health spending as a share of total hospital spending grew from 1.8 percent in 2009 to 2.2 percent in 2011; substance use spending as a share of hospital spending rose from 0.7 percent in 2009 to 1.0 percent in 2011.

Spending growth for mental health and substance use admissions was determined more by increased utilization than by rising prices. In 2011, prices for mental health admissions grew at 5.5 percent and prices for substance use admissions grew 7.9 percent. In comparison, utilization growth in 2011 reached 5.9 percent for mental health admissions, and 19.5 percent for substance use admissions.

Findings Based on Unprecedented Dataset

The report "The Impact of the Mental Health Parity and Addiction Equity Act on Inpatient Admissions" reflects the national health care spending of more than 40 million people younger than 65 and covered by employer-sponsored insurance between 2007 and 2011. The report is focused on hospital care and looks at facility fees; it does not include payments to medical personnel. The data were contributed by a set of large health insurers who collectively represent almost 40 percent of the US private health insurance market.

###

The report will be available on the Health Care Cost Institute website on February 27, 2013 at 12:01 a.m. EST at: http://www.healthcostinstitute.org/reportMH

About the Health Care Cost Institute

The Health Care Cost Institute promotes independent, nonpartisan research and analysis on US health care spending. HCCI believes a better understanding of the forces driving health care cost growth will help policy makers, researchers, and the public make decisions that will lead to more accessible and affordable care. HCCI is governed by an independent board that includes distinguished economists, actuaries and health care experts. For more information, visit www.healthcostinstitute.org or follow us on Twitter @healthcostinst.



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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.


Mental health-substance use services in hospitals up after parity law, finds new report [ Back to EurekAlert! ] Public release date: 27-Feb-2013
[ | E-mail | Share Share ]

Contact: Jemma Weymouth
jweymouth@burnesscommunications.com
301-652-1558
Burness Communications

HCCI analysis suggests jump in spending on mental health-substance use admissions

WASHINGTON, DC The Paul Wellstone and Pete Domenici Mental Health Parity and Addiction Equity Act of 2008 ("Parity Act") increased access to mental health and substance use services in hospitals, yet consumers continued to pay more out-of-pocket for substance use admissions than for other types of hospital admissions, finds a new Health Care Cost Institute (HCCI) report.

The report is one of the first of its kind to look at hospital spending, utilization, prices, and out-of-pocket payments for mental health and substance use admissions for those younger than age 65 with employer-sponsored health insurance. Between 2007 and 2011, spending on hospital admissions for mental health and substance use grew faster than spending on medical/surgical admissions. In 2011, spending on mental health and substance use admissions was driven by an uptick in utilization.

The Parity Act enhanced the 1996 Mental Health Parity Act by extending parity to substance use treatment. Under the Parity Act, large group health plans were required to make behavioral health coverage rules similar to medical/surgical benefit rules. Large group plans were also required to make copays, deductibles, coinsurance, and out-of-pocket maximums for behavioral health care equivalent with the most common medical/surgical treatments.

Substance Use Admissions Surge

In one of the first analyses of the law's impact, HCCI found substance use admissions grew by 19.5 percent in 2011 for people younger than age 65 and covered by employer sponsored health insurance. By comparison, between 2010 and 2011, mental health admissions grew by 5.9 percent and medical/surgical admissions declined by 2.3 percent for this population.

"There's extraordinary growth in hospital substance use admissions by people with private health insurance since 2009," said HCCI Board Chairman Martin Gaynor, E.J. Barone Professor of Economics and Health Policy at Carnegie Mellon University. "What is driving these increases is unclear."

Out-of-Pocket Spending After Parity Law

In 2011, out-of-pocket payments for mental health admissions more closely aligned with payments for medical/surgical admissions. However, the amount spent out-of-pocket on substance use admissions remained higher than payments for medical/surgical admissions. Out-of-pocket payments for substance use hospital admissions grew at twice the rate of out-of-pocket payments for mental health or medical/surgical admissions between 2010 and 2011.

"While it is too soon to understand the full impact of the Parity Act, we need to be looking carefully to make sure we understand why these hospital out-of-pocket payments may be growing at a faster pace than medical spending. Moreover, while there is widespread interest in better understanding the drivers of cost and utilization, the drivers, whether they be benefit design, the economy, or something else, need to be monitored so we better understand them," said HCCI Executive Director Dr. David Newman.

Jump in Spending Accompanies Higher Use

Per person spending on mental health inpatient admissions grew by 11.7 percent to $21.33 in 2011. Substance use admission spending per person rose 28.9 percent to $10.06 in 2011. In contrast, per capita hospital spending for medical/surgical admissions grew 4.3 percent to $769.16 in 2011. Although relatively small amounts are spent per person on mental health and substance use admissions, the share of total hospital spending on these conditions grew between 2007 and 2011. Mental health spending as a share of total hospital spending grew from 1.8 percent in 2009 to 2.2 percent in 2011; substance use spending as a share of hospital spending rose from 0.7 percent in 2009 to 1.0 percent in 2011.

Spending growth for mental health and substance use admissions was determined more by increased utilization than by rising prices. In 2011, prices for mental health admissions grew at 5.5 percent and prices for substance use admissions grew 7.9 percent. In comparison, utilization growth in 2011 reached 5.9 percent for mental health admissions, and 19.5 percent for substance use admissions.

Findings Based on Unprecedented Dataset

The report "The Impact of the Mental Health Parity and Addiction Equity Act on Inpatient Admissions" reflects the national health care spending of more than 40 million people younger than 65 and covered by employer-sponsored insurance between 2007 and 2011. The report is focused on hospital care and looks at facility fees; it does not include payments to medical personnel. The data were contributed by a set of large health insurers who collectively represent almost 40 percent of the US private health insurance market.

###

The report will be available on the Health Care Cost Institute website on February 27, 2013 at 12:01 a.m. EST at: http://www.healthcostinstitute.org/reportMH

About the Health Care Cost Institute

The Health Care Cost Institute promotes independent, nonpartisan research and analysis on US health care spending. HCCI believes a better understanding of the forces driving health care cost growth will help policy makers, researchers, and the public make decisions that will lead to more accessible and affordable care. HCCI is governed by an independent board that includes distinguished economists, actuaries and health care experts. For more information, visit www.healthcostinstitute.org or follow us on Twitter @healthcostinst.



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

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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/bc-mhu022613.php

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Linking insulin to learning

Wednesday, February 27, 2013

Though it's most often associated with disorders like diabetes, Harvard researchers have shown how the signaling pathway of insulin and insulin-like peptides plays another critical role in the body ? helping to regulate learning and memory.

In addition to showing that the insulin-like peptides play a critical role in regulating the activity of neurons involved in learning and memory, a team of researchers led by Yun Zhang, Associate Professor of Organismic and Evolutionary Biology, show that the interaction between the molecules can fine-tune how, or even if, learning takes place. Their work is described in a February 6 paper in Neuron.

"People think of insulin and diabetes, but many metabolic syndromes are associated with some types of cognitive defects and behavioral disorders, like depression or dementia," Zhang said. "That suggests that insulin and insulin-like peptides may play an important role in neural function, but it's been very difficult to nail down the underlying mechanism, because these peptides do not have to function through synapses that connect different neurons in the brain"

To get at that mechanism, Zhang and colleagues turned to an organism whose genome and nervous system are well described and highly accessible by genetics ? C. elegans.

Using genetic tools, researchers altered the small, transparent worms by removing their ability to create individual insulin-like compounds. These new "mutant" worms were then tested to see whether they would learn to avoid eating a particular type of bacteria that is known to infect the worms. Tests showed that while some worms did learn to steer clear of the bacteria, others didn't ? suggesting that removing a specific insulin-like compound halted the worms' ability to learn.

Researchers were surprised to find, however, that it wasn't just removing the molecules that could make the animals lose the ability to learn ? some peptide was found to inhibit learning.

"We hadn't predicted that we would find both positive and negative regulators from these peptides," Zhang said. "Why does the animal need this bidirectional regulation of learning? One possibility is that learning depends on context. There are certain things you want to learn ? for example, the worms in these experiments wanted to learn that they shouldn't eat this type of infectious bacteria. That's a positive regulation of the learning. But if they needed to eat, even if it is a bad food, to survive, they would need a way to suppress this type of learning."

Even more surprising for Zhang and her colleagues was evidence that the various insulin-like molecules could regulate each other.

"Many animals, including the humans, have multiple insulin-like molecules and it appears that these molecules can act like a network," she said. "Each of them may play a slightly different role in the nervous system, and they function together to coordinate the signaling related to learning and memory. By changing the way the molecules interact, the brain can fine tune learning in a host of different ways."

Going forward, Zhang said she hopes to characterize more of the insulin-like peptides as a way of better understanding how the various molecules interact, and how they act on the neural circuits for learning and memory.

Understanding how such pathways work could one day help in the development of treatment for a host of cognitive disorders, including dementia.

"The signaling pathways for insulin and insulin-like peptides are highly conserved in mammals, including the humans," Zhang said. "There is even some preliminary evidence that insulin treatment, in some cases, can improve cognitive function. That's one reason we believe that if we understand this mechanism, it will help us better understand how insulin pathways are working in the human brain."

###

Harvard University: http://www.harvard.edu

Thanks to Harvard University for this article.

This press release was posted to serve as a topic for discussion. Please comment below. We try our best to only post press releases that are associated with peer reviewed scientific literature. Critical discussions of the research are appreciated. If you need help finding a link to the original article, please contact us on twitter or via e-mail.

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Source: http://www.labspaces.net/127040/Linking_insulin_to_learning

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Large shark kills man in New Zealand; beach closed

Muriwai Beach near Auckland, New Zealand, is seen from the air Wednesday, Feb. 27, 2013, following a fatal shark attack. Police said a man was found dead in the water Wednesday afternoon after being "bitten by a large shark." Police and surf lifesavers recovered the man's body. The police statement said Muriwai Beach near the city of Auckland has been closed. (AP Photo/New Zealand Herald, Chris Gorman) NEW ZEALAND OUT, AUSTRALIA OUT

Muriwai Beach near Auckland, New Zealand, is seen from the air Wednesday, Feb. 27, 2013, following a fatal shark attack. Police said a man was found dead in the water Wednesday afternoon after being "bitten by a large shark." Police and surf lifesavers recovered the man's body. The police statement said Muriwai Beach near the city of Auckland has been closed. (AP Photo/New Zealand Herald, Chris Gorman) NEW ZEALAND OUT, AUSTRALIA OUT

In this aerial photo, emergency vehicles are parked at Muriwai Beach near Auckland, New Zealand, Wednesday, Feb. 27, 2013, following a fatal shark attack. Police said a man was found dead in the water Wednesday afternoon after being "bitten by a large shark." Police and surf lifesavers recovered the man's body. The police statement said Muriwai Beach near the city of Auckland has been closed. (AP Photo/New Zealand Herald, Chris Gorman) NEW ZEALAND OUT, AUSTRALIA OUT

AUCKLAND, New Zealand (AP) ? A shark possibly 14 feet long killed a swimmer near a popular New Zealand beach on Wednesday, then disappeared after police attempting to save the man fired gunshots at the enormous predator.

Muriwai Beach near Auckland was closed after the fatal attack, one of only about a dozen in New Zealand in the past 180 years.

Pio Mose, who was fishing at the beach, told The New Zealand Herald he saw the swimmer struggle against the "huge" shark. He told the man to swim to the rocks, but it was too late.

"All of a sudden there was blood everywhere," Mose said. "... I was shaking, scared, panicked."

Police Inspector Shawn Rutene said in a statement that the swimmer, who was in his 40s, was about 200 meters (650 feet) offshore when the shark attacked. He said police went out in inflatable surf-lifesaving boats and shot at the shark, which they estimate was 12 to 14 feet long.

"It rolled over and disappeared," Rutene said, without saying whether police are certain that they killed the creature.

Police recovered the body of the swimmer, whose name was not immediately released because his relatives had yet to be notified.

About 200 people had been enjoying the beach during the Southern Hemisphere summer at the time of the attack. Police said Muriwai and other beaches nearby have been closed until further notice.

Police did not say what species of shark was involved in the attack. Clinton Duffy, a shark expert with the Department of Conservation, said New Zealand is a hotspot for great white sharks, and other potentially lethal species also inhabit the waters.

Attacks are rare. Duffy estimated that only 12 to 14 people have been killed by sharks in New Zealand since record-keeping began in the 1830s.

"There are much lower levels of shark attacks here than in Australia," he said. "It's possibly a function of how many people are in the water" in New Zealand's cooler climate.

He said that during the Southern Hemisphere summer, sharks often come in closer to shore to feed and to give birth, although that doesn't necessarily equate to a greater risk of attack.

"Ninety-nine percent of the time they ignore people," he said. "Sometimes, people get bitten."

Around the world, sharks attacked humans 80 times last year, and seven people were killed, according to the University of Florida's International Shark Attack File. The death toll was lower than it was in 2011 but higher than the average of 4.4 from 2001 to 2010.

Associated Press

Source: http://hosted2.ap.org/APDEFAULT/cae69a7523db45408eeb2b3a98c0c9c5/Article_2013-02-27-AS-New-Zealand-Shark-Attack/id-c25d67067c5a4e5e83f78807fa1e1b0c

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Ultrasound reveals autism risk at birth, study finds

Feb. 25, 2013 ? Low-birth-weight babies with a particular brain abnormality are at greater risk for autism, according to a new study that could provide doctors a signpost for early detection of the still poorly understood disorder.

Led by Michigan State University, the study found that low-birth-weight newborns were seven times more likely to be diagnosed with autism later in life if an ultrasound taken just after birth showed they had enlarged ventricles, cavities in the brain that store spinal fluid. The results appear in the Journal of Pediatrics.

"For many years there's been a lot of controversy about whether vaccinations or environmental factors influence the development of autism, and there's always the question of at what age a child begins to develop the disorder," said lead author Tammy Movsas, clinical assistant professor of pediatrics at MSU and medical director of the Midland County Department of Public Health.

"What this study shows us is that an ultrasound scan within the first few days of life may already be able to detect brain abnormalities that indicate a higher risk of developing autism."

Movsas and colleagues reached that conclusion by analyzing data from a cohort of 1,105 low-birth-weight infants born in the mid-1980s. The babies had cranial ultrasounds just after birth so the researchers could look for relationships between brain abnormalities in infancy and health disorders that showed up later. Participants also were screened for autism when they were 16 years old, and a subset of them had a more rigorous test at 21, which turned up 14 positive diagnoses.

Ventricular enlargement is found more often in premature babies and may indicate loss of a type of brain tissue called white matter.

"This study suggests further research is needed to better understand what it is about loss of white matter that interferes with the neurological processes that determine autism," said co-author Nigel Paneth, an MSU epidemiologist who helped organize the cohort. "This is an important clue to the underlying brain issues in autism."

Prior studies have shown an increased rate of autism in low-birth-weight and premature babies, and earlier research by Movsas and Paneth found a modest increase in symptoms among autistic children born early or late.

The study was supported by a grant from the National Institutes of Health.

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Story Source:

The above story is reprinted from materials provided by Michigan State University.

Note: Materials may be edited for content and length. For further information, please contact the source cited above.


Journal Reference:

  1. Tammy Z. Movsas, Jennifer A. Pinto-Martin, Agnes H. Whitaker, Judith F. Feldman, John M. Lorenz, Steven J. Korzeniewski, Susan E. Levy, Nigel Paneth. Autism Spectrum Disorder Is Associated with Ventricular Enlargement in a Low Birth Weight Population. The Journal of Pediatrics, 2013; DOI: 10.1016/j.jpeds.2012.12.084

Note: If no author is given, the source is cited instead.

Disclaimer: This article is not intended to provide medical advice, diagnosis or treatment. Views expressed here do not necessarily reflect those of ScienceDaily or its staff.

Source: http://feeds.sciencedaily.com/~r/sciencedaily/most_popular/~3/CRxm3nh61Tc/130225112510.htm

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Tuesday, February 26, 2013

Traumatized Malians desperately in need of aid, says U.N.

UNITED NATIONS (Reuters) - Malians in the country's vast desert north are scared and in desperate need of aid, traumatized at the hands of Islamist extremists and fearful of ethnic reprisals by government troops, a senior U.N. humanitarian official said on Tuesday.

John Ging, director of operations for the U.N. Office for the Coordination of Humanitarian Affairs, said a U.N. appeal for $373 million to fund aid operations in the West African state had so far only received $17 million.

Mali's Tuareg rebels seized control of the Saharan north last year but were pushed aside by better-armed al Qaeda-affiliated Islamist groups, which imposed severe sharia (Islamic law) including stoning for adulterers, amputations for thieves, forcing women to don veils and banning music and smoking.

A French-led military operation started last month has since driven insurgents from northern towns such as Gao and Timbuktu, and is now focused on the remote northeast mountains and desert that includes networks of caves, passes and porous borders.

"People are in fear, people are traumatized, the brutality ... moved men to tears. It's really very raw and heartfelt," Ging told reporters at the United Nations in New York after returning from a four-day visit to northern Mali.

"They're fearing both the return of the extremists and also they fear reprisals," he said, referring to worries that Malian troops will carry out ethnic reprisals against light-skinned Tuaregs and Arabs associated with the Islamists.

Malian troops have already been accused by international human rights groups of revenge killings of suspected Islamist rebels and sympathizers in retaken areas.

A U.N.-backed African force, known as AFISMA, is due to take over leadership of the military operation when France begins to withdraw forces from its former West African colony. Once combat operations end, the U.N. Security Council is considering converting AFISMA to a peacekeeping force, diplomats say.

Ging said some 431,000 people had so far fled northern Mali. "Those that were displaced, they do not feel yet that it is safe to return. The people who never left don't feel it's safe," he said. "It's most definitely safer than it was."

During his visit, Ging said he had met boys with amputated limbs and heard horrific stories of rape and harrowing accounts of other atrocities. He said the priority of the people was security, to get help for the agricultural industry and to rebuild the education system.

(Reporting by Michelle Nichols; Editing by Doina Chiacu)

Source: http://news.yahoo.com/traumatized-malians-desperately-aid-says-u-n-214613097.html

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Burning hot air balloon in Egypt plummets, killing 19

LUXOR, Egypt (AP) -- A hot air balloon flying over Egypt's ancient city of Luxor caught fire and crashed into a sugar cane field on Tuesday, killing at least 19 foreign tourists in one of the world's deadliest ballooning accidents and handing a new blow to Egypt's ailing tourism industry.

The casualties included French, British, Belgian, Hungarian, Japanese nationals and nine tourists from Hong Kong, Luxor Governor Ezzat Saad told reporters. Three survivors ? two British tourists and the Egyptian pilots ? were taken to a local hospital, but one of the Britons later died of injuries.

Egypt's civil aviation minister, Wael el-Maadawi, suspended hot air balloon flights and flew to Luxor to lead the investigation into the crash.

The balloon, which was carrying 20 tourists and a pilot, was landing after a flight over the southern town, when a landing cable got caught around a helium tube and a fire erupted, according to an investigator with the state prosecutor's office.

The balloon then shot up in the air, the investigator said. The fire set off an explosion of a gas canister and the balloon plunged some 300 meters (1,000 feet) to the ground, according to an Egyptian security official. It crashed in a sugar cane field outside al-Dhabaa village just west of Luxor, 510 kilometers (320 miles) south of Cairo, the official said.

The official and the investigator spoke on condition of anonymity because they were not authorized to talk to the media.

Bodies of the dead tourists were scattered across the field around the remnants of the balloon. An Associated Press reporter at the crash site counted eight bodies as they were put into body bags and taken away. The security official said all 18 bodies have been recovered.

Hot air ballooning is a popular pastime for tourists in Luxor, usually at sunrise to give a dramatic view over the pharaonic temples of Karnak and Luxor and the Valley of the Kings, a desert valley where many pharaoh, notably King Tutenkhamun, were buried.

Luxor has seen crashes in the past. In 2009, 16 tourists were injured when their balloon struck a cellphone transmission tower. A year earlier, seven tourists were injured in a similar crash.

The toll puts the crash among the deadliest involving a recreation hot air balloon. In 1989, 13 people were killed when their hot air balloon collided with another over the Australian outback near the town of Alice Springs.

Among the dead Tuesday was a Japanese couple in their 60s, among four Japanese who were killed, according to the head of Japan Travel Bureau's Egypt branch, Atsushi Imaeda.

In Hong Kong, a travel agency said nine of the tourists that were aboard the balloon were natives of the semiautonomous Chinese city. There was a "very big chance that all nine have perished," said Raymond Ng, a spokesman for the agency. The nine, he said, included five women and four men from three families.

They were traveling with six other Hong Kong residents on a 10-day tour of Egypt.

Ng said an escort of the nine tourists watched the balloon from the ground catching fire around 7 a.m. and plunging to the ground two minutes later.

In Britain, tour operator Thomas Cook confirmed that two British tourists were killed in the crash, and a third later died in the hospital. Another British survivor and the Egyptian pilot, who state media said had severe burns, were being treated in the hospital.

"What happened in Luxor this morning is a terrible tragedy and the thoughts of everyone in Thomas Cook are with our guests, their family and friends," said Peter Fankhauser, CEO of Thomas Cook UK & Continental Europe. He said the firm is providing "full support" to the victims' families.

In Paris, a diplomatic official said French tourists were among those involved in the accident, but would give no details on how many, or whether French citizens were among those killed. The official spoke on condition of anonymity because he wasn't authorized to be publicly named according to government policy. French media reports said two French tourists were among the dead but the official wouldn't confirm that.

Egypt's tourism industry has been decimated since the 2011 uprising and the political turmoil that followed and continues to this day. Luxor's hotels are currently about 25 percent full in what is supposed to be the peak of the winter season.

Scared off by the turmoil and tenuous security following the uprising, the number of tourists coming to Egypt fell to 9.8 million in 2011 from 14.7 million the year before, and revenues plunged 30 percent to $8.8 billion.

Magda Fawzi, whose company operates four luxury Nile River cruise boats to Luxor, said she expects the accident will lead to tourist cancellations. Tour guide Hadi Salama said he expects Tuesday's accident to hurt the eight hot air balloon companies operating in Luxor, but that it may not directly affect tourism to the Nile Valley city.

Poverty swelled at the country's fastest rate in Luxor, which is highly dependent on visitors to its monumental temples and the tombs of King Tutankhamun and other pharaohs. In 2011, 39 percent of its population lived on less than $1 a day, compared to 18 percent in 2009, according to government figures.

In August, Egypt's Islamist President Mohammed Morsi flew to Luxor to encourage tourism there, about a month after he took office and vowed that Egypt was safe for tourists.

"Egypt is safer than before, and is open for all," he said in remarks carried by the official MENA news agency at the time. He was referring to the security situation following the 2011 ouster of autocratic leader Hosni Mubarak.

Deadly accidents caused by poor management and a decrepit infrastructure have taken place since Morsi took office. In January, 19 Egyptian conscripts died when their rickety train jumped the track. In November, 49 kindergarteners were killed when their school bus crashed into a speeding train because the railway guard failed to close the crossing.

The Muslim Brotherhood, Egypt's most powerful political force and Morsi's base of support, blames accidents on a culture of negligence fostered by Mubarak.

___

Associated Press writers Kelvin Chan in Hong Kong, Jill Lawless in London and Angela Charlton in Paris contributed to this report.

Source: http://news.yahoo.com/egypt-hot-air-balloon-crash-141911621.html

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Inside Isaac: A Discussion of Newton, Part 2

Science Talk

A panel of physicists, science historians and playwright Lucas Hnath discuss Newton following a performance of Hnath's play about Newton, called Isaac's Eye, at the Ensemble Studio Theater in New York City on February 20th. The play runs through March 10, 2013

More Science Talk

A panel of physicists, science historians and playwright Lucas Hnath discuss Newton following a performance of Hnath's play about Newton, called Isaac's Eye, at the Ensemble Studio Theater in New York City on February 20th. The play runs through March 10, 2013.?

The other panelists are Matthew Jones from Columbia University, Matthew Stanley from New York University and Gabriel Cwilich from Yeshiva University.


Source: http://rss.sciam.com/click.phdo?i=bfd29aa6e3e0186c5867dc16f0fd1afc

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Monday, February 25, 2013

Spanish Test: Mediterranean Diet Shines In Clinical Study

Don't hold back on the olive oil, a Spanish study concludes.

hiphoto40/iStockphoto.com

Don't hold back on the olive oil, a Spanish study concludes.

hiphoto40/iStockphoto.com

Pour on the olive oil in good conscience, and add some nuts while you're at it.

A careful test of the so-called Mediterranean diet involving more than 7,000 people at a high risk of having heart attacks and strokes found the diet reduced them when compared with a low-fat diet. A regular diet of Mediterranean cuisine also reduced the risk of dying.

The findings, published online by The New England Journal of Medicine, come from a study conducted right in the heart of Mediterranean country: Spain.

A group of men and women, ages 55 to 80 at the start of the study, were randomly assigned to a low-fat diet or one of two variations of the Mediterranean diet: one featuring a lot of extra-virgin olive oil (more than a quarter cup a day) and the other including lots of nuts (more than an ounce a day of walnuts, almonds and hazelnuts).

The Mediterranean diet is rich in fish, grains, nuts, fruits and vegetables. The diet is low in dairy products, red meat and processed foods.

In this study, funded mainly by the Spanish government, the researchers made sure people got regular training sessions in the particulars of each diet. They also checked people's actual consumption of olive oil and nuts with lab tests.

One thing the researchers didn't do was set any limits on calories or targets for exercise.

While lots of research has found benefits from the Mediterranean diet, many of the studies have observed what people have eaten and looked for associations. One of this study's strengths is that it randomly assigned people at high risk of developing cardiovascular disease to diets that stood to help them.

The study was stopped early (after a median follow-up of 4.8 years) because the benefits from the Mediterranean diet were already becoming apparent. Overall, the people consuming the diets rich in olive oil or nuts had about a 30 percent lower risk of having a heart attack, stroke or dying from a cardiovascular cause.

In absolute terms, there were about 8 of those problems for every 1,000 person-years in the Mediterranean diet groups compared with 11 per 1,000 person-years in the low-fat diet group.

How does the Mediterranean diet work? The prevailing theory is that it lowers bad cholesterol and triglycerides while increasing protective good cholesterol. It may also also help the body's ability to process sugar.

Source: http://www.npr.org/blogs/health/2013/02/25/172872408/spanish-test-mediterranean-diet-shines-in-clinical-study?ft=1&f=1007

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Spring cleaning old science and computer books

By Kenneth Gloss

We will soon be able to say that ?Spring has finally sprung!? As this season renews our energy it also reminds of us of the need to cleanup and clear out, especially if shelf-space is getting tight. But don?t dump those books ? you?d be surprised that there?s a market not only for books that are very old but also for new fields of endeavor that change so fast that a 50 year-old book can be more valuable than a 150-year old book. For example, science and computer books engage collectors whether from the 1500s or from the 1950s.

A lot of book dealers are uncomfortable dealing with science books because the subject matter is foreign to them. I have a degree in chemistry, so I feel more comfortable with this topic than most dealers do. Actually, I considered getting a graduate degree in chemistry, but decided to enter the family business instead, so science books are second nature to me.

In my career as an antiquarian book dealer I?ve been fortunate to be able to hold in my hands and peruse many rare and wonderful books. I?d have to say the one that has impressed me the most was a copy of Isaac Newton?s Principia Matematica, the document in which Newton wrote down the three laws of motion. During an appraisal event I did at a university I was able to hold this book in my hands, and it was just amazing. Isaac Newton actually touched this same book and wrote corrections in it. Today it sells for a few million dollars.

One of the great areas to collect in science books is computers and related technologies. It is a wide-open area for people to collect and it?s still relatively cheap compared to collecting books on natural science. Works penned by scientists like Charles Darwin, whose 200th birthday was celebrated a few years ago sell for tens of thousands of dollars, and Isaac Newton?s work for hundreds of thousands. You don?t have to spend that much on computer books. That said, in 50 or 100 years you won?t be able to get many of the computer books you can today because they will be really expensive.

Computers and other technological devices have been bringing about a new revolution and the knowledge of computing pioneers will be as important to computers as Gutenberg was to books. Charles Babbadge invented the first mechanical computer and wrote a book about computing in the 1800s. It is now a collector?s item that sells for hundreds of dollars. It is rare to find any other computer science books that date before World War II, because that is when transistors were first made and the computer revolution really began. William Bradford Shockley, a Nobel Prize winner in physics, wrote the first book on transistors, which now costs several hundred to a few thousand dollars. John von Neumann wrote a book on theory and probability, which led into the mathematics that in turn led into computers. Another writer in this area whose work is very interesting to collectors is Norbert Weiner, a leader in the field of cybernetics. He worked at MIT and wrote about artificial intelligence.

Computer science books tend to be collected by a limited group of computer scientists and like-minded people because they are so technical. Demand is causing their prices to increase, but these books are very, very technical for a general reader, which limits the demand to some degree. Prices on some of the earliest books from the Harvard Science Computing Library range from the hundreds to the hundreds of thousands of dollars.

Another way to get into collecting in the computer arena is to collect sales brochures and other documentation for new Macs, old Macs, IBM Selectrics, and other models. Sales materials tend to be highly pictorial, so consumers can see what they are about to buy. From the technical aspect it can be really fun to see how these machines have changed over the years.

Go to stores and ask for all the sales brochures they have on the models they sell. Ask them to check the back room for brochures from outdated models they no longer carry. It?s a cheap and easy way to get started with a computer literature collection. One person I know is collecting every e-book there is. This collection isn?t just composed of books online, but all the ways people have been trying to meld books with computers. The technology and styles in this area change and go out of date very quickly. Fifteen years ago computers were still very large, with a large floppy disk. Today, mini-iPads are the thing. Such quick-paced change really holds your interest while collecting. At some point in the future this could be a museum quality collection, providing a look back at how computing was done in the beginning.

It will be easy to track the technological advances because the collection is really comprehensive, including the instruction books and how-to manuals that came with each machine. After reading these books the collector made notes about them, citing things like which model is easiest to use. He?s also keeping a journal about the process of collecting these things that will make an interesting side note. It?s really fascinating how this person is forming a collection as the items are being produced, rather than collecting things from yesteryear, which is usually how it is done. It isn?t exactly cheap to collect like this, though, especially when it comes to buying the new items. It isn?t always easy, either, because the minute a model is obsolete, it?s gone from the market, and you may not be able to find it for sale. Even though some book dealers tend to shy away from science books they are really quite collectible, especially if your interest is in computer science and technology.

Right now these books aren?t all that rare and collectors can find a deal even if they only want to spend a few hundred dollars. Computer books bought today and passed down a few generations may wind up being worth a great deal more than was paid for them. From sales brochures to early computer theory, there is a computer science book to match the interest and budget of any technology enthusiast.

Ken Gloss is the owner of the Brattle Book Shop in Boston, one of the largest and oldest antiquarian bookstores in America. 2013 is the 64th year of ownership by the Gloss family. Visit their Website at: www.brattlebookshop.com or to inquire about selling your books call 1-800-447-99595. Ken has been a guest appraiser on PBS? Antiques Roadshow numerous times.

Source: http://www.thesomervillenews.com/archives/35725

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In California, thousands of teachers missing needed credentials

The last time Charlie Parker took a social studies class, he was a teenager with an Afro and Jimmy Carter was president of the United States. Yet here he was, standing at the front of a classroom, trying to teach dozens of high schoolers subjects that never appealed to him when he learned them more than 30 years ago.

On his first day teaching U.S. history, world history and economics at McAlister High School in Los Angeles nearly four years ago, Parker struggled to keep his course materials straight and handed a student the wrong textbook. Some days, his students? questions went unanswered or were directed to the Internet. Later, Parker said, when his students took state tests, their scores were low.

After school, Parker said, ?I was doing homework, just like the kids.?

// ]]>

These were not the troubles of a rookie teacher. In fact, Parker had taught for more than 20 years, including 11 at McAlister.

The problem for Parker, who taught social studies at McAlister for two years and now teaches at another Los Angeles high school, was that he should not have taught history to begin with.

Every year in California, public school administrators assign thousands of teachers to classes for which they lack the credentials or legal authorization to teach. Untrained teachers have been assigned to a variety of difficult classes, including those filled with English-language learners and others with special intellectual and physical needs. Or, in Parker?s case, to teach social studies when they?re credentialed for biology.

Nearly 1 in 10 teachers or certificated personnel ? more than 32,000 school employees ? did not have the credentials or authorization for their positions from 2007 through 2011, according to data compiled by the state Commission on Teacher Credentialing.

The problem is greater at low-performing schools, where students are overwhelmingly low-income and Latino, a California Watch analysis found. The average rate of improperly assigned teachers at these schools was 16 percent over the same period.

?That isn?t something that should be acceptable to anybody,? said Brooks Allen, director of education advocacy at the American Civil Liberties Union of Southern California.

In the 2010-11 school year, more than 12,000 teachers and certificated personnel at more than 1,000 low-performing schools served in positions they should not have held. On average at these schools, 82 percent of students qualified for free or reduced-price meals, and more than three-quarters were Latino.

Research and interviews with state and local education officials suggest that staffing turnover and shortages, insufficient resources, poor planning and mismanagement contribute to assigning teachers to classes for which they lack specialized training.

This problem of ?misassignments,? as they?re known, has improved dramatically since the 2005-06 school year, when the state began giving greater attention to teacher assignments at low-performing schools. At the time, 29 percent of teachers at these schools lacked licenses for their positions.

Teachers gaining authorization to instruct English-language learners have driven much of that progress. The extra scrutiny ? a product of Williams v. California, a landmark class-action lawsuit that in 2004 charged the state with ensuring all students had qualified, credentialed teachers ? also has helped.

Still, the rate of improperly assigned teachers at low-performing schools has hovered above a persistent 12 percent. (It?s unclear how California ranks nationally; states have different standards and policies for employing teachers, making comparisons difficult.)

?The persistence of misassignments, year over year, even with annual monitoring, certainly suggests that it?s something that needs to be looked at,? said Allen, the attorney assigned to implement the Williams settlement.

Public Advocates, which represented students in the Williams lawsuit, has called for the Legislature to hold a hearing on the problem and for the credentialing commission to push the issue.

Alamo Democrat Joan Buchanan, chairwoman of the Assembly Education Committee, said that while she is open to holding a hearing, she is ?not sure passing a law is going to be like waving a magic wand and solve the problem there.? She said she hoped the State Board of Education and Superintendent of Public Instruction Tom Torlakson would also look into the issue.

Ensuring teachers are appropriately licensed ?is very important back-office work that nobody ever sees and can pay huge dividends and, in some instances, be very harmful to kids,? said Michael Hanson, superintendent of the Fresno Unified School District.

In one case, at the public Berkeley Technology Academy, a student failed the California High School Proficiency Examination after enrolling in a class intended to prepare her and other credit-deficient students for the test. The student later told her mother that the class included nothing she encountered on the exam, which allows students to receive the equivalent of a high school diploma.

?I paid good money for my daughter to participate (in) this CHSPE experiment only to find out that the teacher may have been unqualified to teach it, and that she did not adequately prepare the students to take the final exam,? the student?s mother wrote in a June 2011 complaint.

The Berkeley Unified School District acknowledged in a letter to the mother that a noncredentialed staff member had taught the course. It offered her daughter 20 hours of private instruction and the option to enroll at the high school for a fifth year.

Lengthy process

While credentials and legal authorization do not guarantee effective teachers, they represent the baseline qualifications that educators must have. If a teacher has been assigned to the wrong class, his or her performance evaluation is nullified under state law, making it more difficult to identify bad ? and good ? teachers.

The Commission on Teacher Credentialing typically needs to work with only a handful of school districts that struggle to resolve improper assignments on their own, said Roxann Purdue, a consultant in the agency?s professional services division.

Yet the lengthy, laborious and often paper-heavy process of monitoring assignments means that teachers and other staff can remain in the wrong positions for months.

County offices of education typically begin compiling paperwork from school districts in late fall or winter. Once they identify teachers who lack necessary credentials or authorization and notify the district, the district has 30 days to address the problems. By the time it?s all resolved ? teachers must be reassigned, get the appropriate credentials, receive emergency or short-term permits or local authorizations, obtain waivers or resign ? the school year could be nearly over.

In the 2011-12 school year, for example, Alameda County notified the Oakland Unified School District on May 15 to correct any remaining teacher assignment problems by June 30 ? 15 days after the school year ended, records show. A letter listed 50 teachers whose qualifications were unclear or who held inappropriate assignments.

?If we had a whole bunch of people working on it, we could identify the misassignment sooner. You?re talking about one manager, one analyst ? that?s all we are,? said Stephanie Tomasi, Alameda?s credentials manager.

// ]]>

County officials said there?s little they can do to expedite the monitoring process. School schedules and staffing tend to shift during the first month or two of school, so counties don?t begin monitoring until classes are settled. Schools, too, need time to gather their records.

?It seems like we want to catch it (improperly assigned teachers) really early in the school year so you don?t have a student going all year without services or whatever they need,? said Teresa Ussery, a credential analyst for Stanislaus County, which requests district documents in October and reports assignment problems in March and April. ?But just because of timelines and processes, it?s very hard to do that ? especially if it?s a large district.?

Still, Ussery said, problems identified late in one school year pay off the following school year. Schools learn to not repeat the same mistakes, she said.

In the Berkeley case, for example, the district said that the class led by an uncredentialed staff member would no longer be offered and that credentialed teachers would teach all courses at the school.

Success with English-learner authorization

Improper assignments often are the result of school administrators who do not know that even elective or short-term courses require appropriate certification, said Purdue of the credentialing commission.

Middle and high schools in particular, she said, are offering more experimental courses that are less straightforward to staff than, say, a physics class.

Still, nearly 2,400 teachers in low-performing schools were assigned to teach core academic subjects ? English, math, science and social science ? without the appropriate credentials or authorization during the 2010-11 school year.

By comparison, teachers lacking authorization to teach English-language learners ? which numbered more than 22,200 in the 2005-06 school year ? plummeted to 1,575.

?That is a success story,? said Allen of the ACLU. ?So the question is, what is it that needs to be done to have that similar trend across the board??

California teachers of all subjects must have authorization to teach English learners, even if they have just one student in their class who is learning the language. But Purdue said what worked to increase authorizations for teaching English-language learners does not apply to other subjects.

?It?s an isolated problem with a permanent solution, whereas the other subjects areas, it?s a new opportunity to misassign them every semester and every year,? she said.

The commission tackled the problem with English-learner authorization by first offering training opportunities to existing credentialed teachers. It then phased in English-learner training at educator preparation programs so that all new teachers would automatically have the authorization.

?You?d keep closing the circle until it becomes smaller and smaller,? Purdue said. ?But you can?t do that for math, because if someone?s misassigned in math, we have to have all teachers authorized in every subject to close every loophole.?

Hanson, of Fresno Unified, said assigning teachers outside of what their credentials allow is sometimes the best solution to a Rubik?s cube of teachers, students, courses and schedules.

In the last school year, for example, scheduling conflicts led to a high school algebra teacher instructing one period of geometry, a course the teacher?s credential did not permit. ?I?m not going to find a geometry teacher who can work one period during the day,? Hanson said. ?Here?s the only way I can get it done.?

Teacher shortages add to problems

In certain locations and subjects, such as math, science and special education, incorrect assignments could reflect teacher shortages. These shortages are most critical in schools concentrated with low-income and minority students and in districts with fewer resources, a state task force reported in September.

?You can?t leave it up to local principals to find good teachers and well-prepared teachers if they don?t exist,? said Linda Darling-Hammond, chairwoman of the Commission on Teacher Credentialing, who also co-led the task force. ?Ultimately, you have to invest in getting enough teachers in shortage fields and invest in getting enough teachers who will teach in shortage locations.?

Teacher layoffs ? California schools cut about 32,000 teachers between 2007-08 and 2010-11 ? ought to have produced a larger supply of qualified teachers, said John Affeldt, who served as lead counsel on the Williams lawsuit and is a managing attorney at Public Advocates.

But most districts have policies that allow them to hold on to teachers in high-need areas, even when layoffs are required, said Sharon Robison, the Association of California School Administrators? liaison to the credentialing commission. Teachers who are laid off are not always qualified in the subjects or available in the locations that schools need, she said.

It took Oakland Unified five months to find a permanent teacher for a class of 12 severely disabled children at Fred T. Korematsu Discovery Academy. Seven substitutes led the class before a teacher from Washington state could take over Nov. 1, more than two months after the start of the school year.

Of the 30 to 40 applications Principal Charles Wilson saw prior to the teacher?s hiring, seven applicants had appropriate credentials and three were interviewed. None was a good fit for the position, he said.

Low-performing schools like his are sometimes accused of ?intentionally trying to hire young, kind of throwaway teachers because they?re cheap,? Wilson said. ?But the reality of it is those kinds of (qualified, experienced) teachers don?t apply to these kinds of schools. They don?t take an interview.?

Even though his elementary school has a positive reputation as being supportive of teachers, Wilson said, ?people are scared. ? It?s too much of a stress they don?t want to take on.?

Revamping a school

Education officials and critics agree that much progress has been made in reducing the number of incorrect assignments. Among nearly 300 low-performing schools that had improper assignments for six consecutive years, 79 percent had fewer instances of the problem in 2010-11 than they did in 2005-06.

Seven years ago, Huntington Park Senior High School, south of downtown Los Angeles, had more improper assignments than any other school in the state. In fact, it had more misassignments than it had teachers ? 477 in all, indicating that staff members lacked more than one necessary credential or authorization for their positions.

After years of poor student performance, Huntington Park underwent a dramatic district-ordered transformation in 2011 that switched it from a year-round calendar to traditional school year and required teachers to reinterview for their jobs. The school replaced about 70 percent of its staff in less than two months.

// ]]>

School administrators, themselves newcomers, saw the process as an opportunity to ensure all teachers had the credentials for a predictable stable of classes that mirror those required for admittance to California universities, said Freddy Lara, the school?s assistant principal. Lara said the Los Angeles Unified School District referred the school only qualified, credentialed candidates for each position.

Today, the school?s principal, Lupe Hernandez, reports that the campus has no incorrect assignments. But Huntington Park may be an outlier. Most schools cannot require all their teachers to reapply for jobs, and doing so would not necessarily prevent future assignment problems.

?This is really about the tension between what students need every year and the adults that we?ve already hired in the system and probably have permanent (tenured) status,? said Hanson of Fresno Unified.

Schools should always strive to have no improperly assigned teachers, Hanson and other education officials said. But they doubted that was a realistic possibility.

?I don?t think it?s a menacing problem that people haven?t really tried to work on,? said Robison of the Association of California School Administrators. ?It?s just that you have over 1,000 school districts, hundreds of thousands of students, and on any given day, you?re going to have a vacancy you need to fill because you have students who are there and ready to learn ? and expecting to learn ? and you have to teach them.?

In California, thousands of teachers missing needed credentials | Hechinger Report.

Source: http://educationviews.org/in-california-thousands-of-teachers-missing-needed-credentials/

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Sunday, February 24, 2013

Samsung?s HomeSync 1TB Android-based media server streams apps to your TV, keeps your data in sync

Samsung?s HomeSync 1TB Android-based media server streams apps to your TV, keeps your data in sync

Samsung makes phones, tablets, and televisions that can run apps. Now the company is also offering a set-top-box that can bring Android apps to your TV, let you stream content from your mobile device to a TV, or keep your data synchronized between devices.

It?s called the Samsung HomeSync, and it?s a home media server with a 1.7 GHz dual core processor, 1GB of RAM, an 8GB solid state drive, and a 1TB hard drive.

Samsung HomeSync

The HomeSync is expected to ship in select countries starting in April, 2013.

The device features WiFi, Bluetooth and Ethernet support, 2 USB 3.0 ports for peripherals, a micro USB port for connecting to a PC, and HDMI output for hooking up a TV or monitor.

Under the hood, the HomeSync is running software based on Google Android Jelly Bean, which means you can use it to watch movies on the hard drive or stream videos from YouTube, among other things. It also includes access to the Google Play Store, which should let you download additional apps such as Netflix or Vudu to turn the HomeSync into a pretty powerful media center for your TV.

Samsung says you can also link up to 8 accounts to the HomeSync so you can synchronize data across your devices or access shared or private storage. In other words, you can keep your music and movie collection on the HomeSync?s 1TB hard drive and use each of your family?s phones to access a different set of media files for each user.

Samsung hasn?t yet revealed how much the HomeSync will cost.

?

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  • TypeAudio / video player
  • Video servicesNetflix, Amazon, YouTube, Other
  • Audio servicesLast.fm, Pandora, Rdio, Rhapsody, Spotify, Other
  • Video codec supportAVI, DivX, h.264 / AVC, MPEG-4, WMV
  • Audio codec supportAAC, FLAC, MP3, OGG, WAV, WMA
  • Video outputsHDMI (1?outputs, v1.4)
  • Audio outputsvia HDMI, TOSLINK (optical)
  • Released04/01/2013
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General mechanism that accelerates tumor development discovered

Feb. 24, 2013 ? Cancer is characterized by uncontrolled cell division and growth. In order to identify new therapeutic targets through which to tackle the disease, scientists seek to clarify the mechanisms that control the expression of genes that favor the development of tumors, in processes such as uncontrolled cell division. Nature has just published a paper by the lab headed by Ra?l M?ndez, ICREA professor at the Institute for Research in Biomedicine (IRB Barcelona). The study describes a mechanism controlled by the CPEB1 protein that affects more than 200 genes related to cell proliferation and tumor progression. The mechanism, which was discovered using Hodgkin lymphoma cells, has been proposed as a general regulatory system that enhances the spread of cancer.

The researchers describe that CPEB1 shortens a highly specific region of RNAs (RNAs are the molecules that carry gene information for protein synthesis). This region holds most of the signals that determine whether an RNA molecule is made into a protein or not. "CPEB1 "takes off the brakes" for hundreds of RNAs that stimulate cell desdifferentiation and proliferation, allowing them to be made into proteins; however, in addition to removing the brakes in the nucleus, this protein accompanies RNA to the cytoplasm, where it speeds up the production of these proteins," explains the senior author of the paper Ra?l M?ndez, head of the "Translational control of cell cycle and differentiation" group at IRB Barcelona.

Ra?l M?ndez is an expert on the CPBE protein family, a type of RNA-binding protein that has a positive and crucial role in early embryo development. "CPEB proteins are necessary during development and also during tissue regeneration via stem cells in adults, but if the programme governed by CPEBs is continually switched on, cells divide when they are not supposed to and form a tumor," explains M?ndez. The CPEB family comprises four proteins, which compensate each other's normal function but which have specific activities in diseased states. "This finding is positive from a therapeutic viewpoint because it means that if you remove CPEB1 from healthy cells, its function can be taken over by any other CPEB protein. In contrast, in tumors only CPEB1 has the capacity to shorten these regions, thus affecting only tumor cells," states Italian researcher Felice Alessio Bava, first author of the paper, and post-doctoral fellow with M?ndez's group who, this year, has obtained his doctorate degree through the "la Caixa" International Fellowship Programme. This study provides further evidence of the potential of CPEB proteins as therapeutic targets. In 2011, in a study published in Nature Medicine, M?ndez identified that CPEB4 "switches on" hundreds of genes linked to tumor growth. This new study explains that the overexpression of CPEB4 in tumors is because CPEB1 has also "released its brakes." "The fact that these proteins control each other is also advantageous from a therapeutic point of view," asserts M?ndez, "because partial inhibition, by a drug, would be amplified, thus allowing tumor cell reprogramming. The amplification should make it easier to find a viable compound."

The lab has developed a system to screen therapeutic molecules for a drug that can inhibit the action of CPEB in tumors while having few secondary effects on healthy cells. "There is no drug currently available that influences the regulation of gene expression at this level. Our findings open up a pioneering therapeutic window. We are optimistic about the potential of CPEB proteins as targets," says M?ndez.

The action of CPEB proteins should be considered in the design of other therapeutic strategies

The study published in Nature includes a meticulous genomic analysis of RNA molecules that are processed in different ways depending on whether CPBE1 is present. The study provides a list of between 200 and 300 of such genes, that is to say, those that would have the region holding regulatory signals removed. This is precisely the region where microRNAs -- small molecules regulating the translation of this RNA to protein -- bind. "Many antitumor therapies attempt to interfere with microRNA binding, but we have now revealed that CPEB proteins remove these regions beforehand. The pharmaceutical companies that are developing such compounds will be able to predict whether their targets are suitable approaches or not," explains the scientist.

The study has involved the collaboration of the group led by Juan Valc?rcel at the Center for Genomic Regulation (CRG), an expert in RNA nuclear processing, and that of Roderic Guig?, an expert in biostatistics and also at CRG. This study received funding from the Consolider RNAreg consortium of the Spanish Ministry of Economy and Competition and the Generalitat de Catalunya (Government of Catalonia).

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The above story is reprinted from materials provided by Institute for Research in Biomedicine (IRB Barcelona).

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Journal Reference:

  1. Felice-Alessio Bava, Carolina Eliscovich, Pedro G. Ferreira, Belen Mi?ana, Claudia Ben-Dov, Roderic Guig?, Juan Valc?rcel, Ra?l M?ndez. CPEB1 coordinates alternative 3?-UTR formation with translational regulation. Nature, 2013; DOI: 10.1038/nature11901

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Source: http://feeds.sciencedaily.com/~r/sciencedaily/health_medicine/genes/~3/6AD_azErazs/130224142827.htm

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