Source: http://the-gadgeteer.com/2013/06/11/sumo-emperor-beanbag-chair-review/
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Wednesday, June 12, 2013
Sumo Emperor beanbag chair review
The Sumo Emperor beanbag chair is certainly aptly named. This is a big beanbag chair from SumoLounge. How big? Really big. Like, massive. It’s just a beanbag chair, so this isn’t going to be the longest review ever. Did I mention it was big? Oh, and it comes in Red, or red. Yep, it’s a [...]
Lithia adds BMW, Honda, VW stores in Oregon to ... - Automotive News
[unable to retrieve full-text content]Lithia Motors Inc. has acquired three new-car dealerships in Oregon that will add $110 million in estimated annual revenues. Lithia, of Medford, Ore., said Monday it had purchased the O'Brien Auto Group of Salem in Salem, ...
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Tuesday, June 11, 2013
Sony announces PS Plus edition of Driveclub will be free for a year
Sony's feeling pretty unstoppable right now, and it's adding to the momentum by announcing that the PlayStation Plus edition of Driveclub will be free for the first year to Plus members. The game, which was announced alongside a litany of other PS4 titles in February, is a team-based driving game that features realistic vehicles modeled after their real-life counterparts. Alongside Driveclub you'll find Don't Starve, Outlast and Secret Ponchos as part of the PS Plus instant game collection as well.
Follow our liveblog for all of the latest news from E3 2013.
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iOS 7 Adds Multitasking for All Apps
Until now, multitasking in iOS has been fairly limited. Now, it's going to work for all apps?and Apple says it's going to provide background updates to all apps?and Apple says all those background cycles aren't going to hurt your battery life.
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Simple theory may explain mysterious dark matter
June 10, 2013 ? Most of the matter in the universe may be made out of particles that possess an unusual, donut-shaped electromagnetic field called an anapole.
This proposal, which endows dark matter particles with a rare form of electromagnetism, has been strengthened by a detailed analysis performed by a pair of theoretical physicists at Vanderbilt University: Professor Robert Scherrer and post-doctoral fellow Chiu Man Ho. An article about the research was published online last month by the journal Physics Letters B.
"There are a great many different theories about the nature of dark matter. What I like about this theory is its simplicity, uniqueness and the fact that it can be tested," said Scherrer.
In the article, titled "Anapole Dark Matter," the physicists propose that dark matter, an invisible form of matter that makes up 85 percent of the all the matter in the universe, may be made out of a type of basic particle called the Majorana fermion. The particle's existence was predicted in the 1930's but has stubbornly resisted detection.
A number of physicists have suggested that dark matter is made from Majorana particles, but Scherrer and Ho have performed detailed calculations that demonstrate that these particles are uniquely suited to possess a rare, donut-shaped type of electromagnetic field called an anapole. This field gives them properties that differ from those of particles that possess the more common fields possessing two poles (north and south, positive and negative) and explains why they are so difficult to detect.
"Most models for dark matter assume that it interacts through exotic forces that we do not encounter in everyday life. Anapole dark matter makes use of ordinary electromagnetism that you learned about in school -- the same force that makes magnets stick to your refrigerator or makes a balloon rubbed on your hair stick to the ceiling," said Scherrer. "Further, the model makes very specific predictions about the rate at which it should show up in the vast dark matter detectors that are buried underground all over the world. These predictions show that soon the existence of anapole dark matter should either be discovered or ruled out by these experiments."
Fermions are particles like the electron and quark, which are the building blocks of matter. Their existence was predicted by Paul Dirac in 1928. Ten years later, shortly before he disappeared mysteriously at sea, Italian physicist Ettore Majorana produced a variation of Dirac's formulation that predicts the existence of an electrically neutral fermion. Since then, physicists have been searching for Majorana fermions. The primary candidate has been the neutrino, but scientists have been unable to determine the basic nature of this elusive particle.
The existence of dark matter was also first proposed in the 1930's to explain discrepancies in the rotational rate of galactic clusters. Subsequently, astronomers have discovered that the rate that stars rotate around individual galaxies is similarly out of sync. Detailed observations have shown that stars far from the center of galaxies are moving at much higher velocities than can be explained by the amount of visible matter that the galaxies contain. Assuming that they contain a large amount of invisible "dark" matter is the most straightforward way to explain these discrepancies.
Scientists hypothesize that dark matter cannot be seen in telescopes because it does not interact very strongly with light and other electromagnetic radiation. In fact, astronomical observations have basically ruled out the possibility that dark matter particles carry electrical charges.
More recently, though, several physicists have examined dark matter particles that don't carry electrical charges, but have electric or magnetic dipoles. The only problem is that even these more complicated models are ruled out for Majorana particles. That is one of the reasons that Ho and Scherrer took a closer look at dark matter with an anapole magnetic moment.
"Although Majorana fermions are electrically neutral, fundamental symmetries of nature forbid them from acquiring any electromagnetic properties except the anapole," Ho said. The existence of a magnetic anapole was predicted by the Soviet physicist Yakov Zel'dovich in 1958. Since then it has been observed in the magnetic structure of the nuclei of cesium-133 and ytterbium-174 atoms.
Particles with familiar electrical and magnetic dipoles, interact with electromagnetic fields even when they are stationary. Particles with anapole fields don't. They must be moving before they interact and the faster they move the stronger the interaction. As a result, anapole particles would have been have been much more interactive during the early days of the universe and would have become less and less interactive as the universe expanded and cooled.
The anapole dark matter particles suggested by Ho and Scherrer would annihilate in the early universe just like other proposed dark matter particles, and the left-over particles from the process would form the dark matter we see today. But because dark matter is moving so much more slowly at the present day, and because the anapole interaction depends on how fast it moves, these particles would have escaped detection so far, but only just barely.
The research was funded in part by Department of Energy grant DE-FG05-85ER40226.
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Monday, June 10, 2013
High sugar intake linked to low dopamine release in insulin resistant patients
June 10, 2013 ? Using positron emission tomography (PET) imaging of the brain, researchers have identified a sweet spot that operates in a disorderly way when simple sugars are introduced to people with insulin resistance, a precursor to type 2 diabetes. For those who have the metabolic syndrome, a sugar drink resulted in a lower-than-normal release of the chemical dopamine in a major pleasure center of the brain. This chemical response may be indicative of a deficient reward system, which could potentially be setting the stage for insulin resistance. This research could revolutionize the medical community's understanding of how food-reward signaling contributes to obesity, according to a study presented at the Society of Nuclear Medicine and Molecular Imaging's 2013 Annual Meeting.
"Insulin resistance is a significant contributor to obesity and diabetes," said Gene-Jack Wang, MD, lead author of the study and Professor of Radiology at Stony Brook University and researcher at the U.S. Department of Energy's Brookhaven National Laboratory in Upton, N.Y. "A better understanding of the cerebral mechanisms underlying abnormal eating behaviors with insulin resistance would help in the development of interventions to counteract the deterioration caused by overeating and subsequent obesity. We suggest that insulin resistance and its association with less dopamine release in a central brain reward region might promote overeating to compensate for this deficit."
An estimated one-third of Americans are obese, according to the U.S. Centers for Disease Control and Prevention. The American Diabetes Association estimates that about 26 million Americans are living with diabetes and another 79 million are thought to be prediabetic, including those with insulin resistance.
The tendency to overeat may be caused by a complex biochemical relationship, as evidenced by preliminary research with rodents. Dr. Wang's research marks the first clinical study of its kind with human subjects.
"Animal studies indicated that increased insulin resistance precedes the lack of control associated with pathological overeating," said Wang. "They also showed that sugar ingestion releases dopamine in brain regions associated with reward. However, the central mechanism that contributes to insulin resistance, pathological eating and weight gain is unknown."
He continued, "In this study we were able to confirm an abnormal dopamine response to glucose ingestion in the nucleus accumbens, where much of the brain's reward circuitry is located. This may be the link we have been looking for between insulin resistance and obesity. To test this, we gave a glucose drink to an insulin-sensitive control group and an insulin-resistant group of individuals and we compared the release of dopamine in the brain reward center using PET."
In this study, a total of 19 participants-including 11 healthy controls and eight insulin-resistant subjects-consumed a glucose drink and, on a separate day, an artificially sweetened drink containing sucralose. After each drink, PET imaging with C-11 raclopride-which binds to dopamine receptors-was performed. Researchers mapped lit-up areas of the brain and then gauged striatal dopamine receptor availability (which is inversely related to the amount of natural dopamine present in the brain). These results were matched with an evaluation in which patients were asked to document their eating behavior to assess any abnormal patterns in their day-to-day lives. Results showed agreement in receptor availability between insulin-resistant and healthy controls after ingestion of sucralose. However, after patients drank the sugary glucose, those who were insulin-resistant and had signs of disorderly eating were found to have remarkably lower natural dopamine release in response to glucose ingestion when compared with the insulin-sensitive control subjects.
"This study could help develop interventions, i.e., medication and lifestyle modification, for early-stage insulin-resistant subjects to counteract the deterioration that leads to obesity and/or diabetes," said Wang. "The findings set a path for future clinical studies using molecular imaging methods to assess the link of peripheral hormones with brain neurotransmitter systems and their association with eating behaviors."
Scientific Paper 29: Gene-Jack Wang, Radiology, Stony Brook University; Jean Logan, Elena Shumay, Joanna Fowler, Bioscience, Brookhaven National Laboratory, Upton, NY; Antonio Convit, Psychiatry, New York University, New York, NY; Tomasi Dardo, Neuroimaging, National Institute on Alcohol Abuse and Alcoholism, Upton, NY; Nora Volkow, National Institute on Drug Abuse, Bethesda, MD, "Peripheral insulin resistance affects brain dopaminergic signaling after glucose ingestion," SNMMI's 60th Annual Meeting, June 8-12, 2013, Vancouver, British Columbia.
The study was conducted at the U.S. Department of Energy's Brookhaven National Laboratory and supported by the National Institutes of Health and Brookhaven Lab. The PET Radiotracer Imaging technology used in the study was developed with the support of the DOE Office of Science. The imaging program is part of a Stony Brook University clinical research center, which also supports the research.
Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_health/~3/CtWi6sP_byY/130610223722.htm
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Saturday, June 1, 2013
Judge: Google must give user info to FBI
SAN FRANCISCO (AP) ? Google must comply with the FBI's demand for data on certain customers as part of a national security investigation, according to a ruling by a federal judge who earlier this year determined such government requests are unconstitutional.
The decision involves "National Security Letters," thousands of which are sent yearly by the FBI to banks, telecommunication companies and other businesses. The letters, an outgrowth of the USA Patriot Act passed after the Sept. 11 attacks, are supposed to be used exclusively for national security purposes and are sent without judicial review. Recipients are barred from disclosing anything about them.
In March, U.S. District Court Judge Susan Illston sided with the Electronic Frontier Foundation in a lawsuit brought on behalf of an unidentified telecommunications company, ruling the letters violate free speech rights. She said the government failed to show the letters and the blanket non-disclosure policy "serve the compelling need of national security" and the gag order creates "too large a danger that speech is being unnecessarily restricted."
She put that ruling on hold while the government appeals to the 9th U.S. Circuit Court of Appeals.
In the latest case, Illston sided with the FBI after Google contested the constitutionality and necessity of the letters but again put her ruling on hold until the 9th Circuit rules. After receiving sworn statements from two top-ranking FBI officials, Illston said she was satisfied that 17 of the 19 letters were issued properly. She wanted more information on two other letters.
It was unclear from the judge's ruling what type of information the government sought to obtain with the letters. It was also unclear who the government was targeting.
Kurt Opsah, an attorney with the Electronic Frontier Foundation, said he was "disappointed that the same judge who declared these letters unconstitutional is now requiring compliance with them."
Illston's May 20 order omits any mention of Google or that the proceedings were closed to the public. But the judge said "the petitioner" was involved in a similar case filed on April 22 in New York federal court.
Public records obtained Friday by The Associated Press show that on that same day, the federal government filed a "petition to enforce National Security Letter" against Google after the company declined to cooperate with government demands.
Neither Google nor the FBI would comment.
The letters issued by the FBI can be used to collect unlimited kinds of private information, such as financial and phone records. The FBI sent 16,511 letters requests for information regarding 7,201 people in 2011, the latest data available.
Critics contend the government is overly zealous in using the letters, unnecessarily infringing on privacy rights of American citizens. In 2007, the Justice Department's inspector general found widespread violations by the FBI, including sending demands without proper authorization. The FBI has since tightened oversight of the system.
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