Sunday, March 31, 2013

NYC Kids Show Review: Piggy Nation the Musical! | The Mama ...

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by Senior Reviewer Maytal Wichman

Having good manners is something I am constantly working on with my kids, especially when we?re in public. It?s an ongoing thing that I try to be aware of, while at the same time not noticing that I myself might be lacking in the manners department. I recently attended a performance of Piggy Nation and though I was happy to see a show that can insipre kids to be more mindful of their behavior, I was also relieved to see that sometimes being rude and obnoxious is just, well, a part of our natural behavior. (Read more after the jump)

Piggy Nation is about a little pig named Sammy who is on summer vacation and decides to accompany his father at his job as a cop on Piggy Patrol. Part of his job is to give tickets for piggy behavior. What?s piggy behavior? A rude attitude and thoughtless behavior. For example, cutting in line or talking loudly on your cell phone at a restaurant. Throughout the show Sammy and his dad meet various animals and give tickets to those who display piggy behavior. In the end (not to give away the ending, but there?s no real cliff-hanger here) they all admit they were piggies and apologize to one another.

Before the show, I had a chance to speak with Richard Rosser, who is the creative mind behind Piggy Nation ? he wrote the book and lyrics. The idea for Piggy Nation started after he was watching someone cut off his mother-in-law at a parking lot. He created the concept of a ?piggy ticket? and went on to write an award-winning children?s book called ?Piggy Nation, A Day at Work with Dad?. Together with composer Alec Wells, they adapted the book into a musical. ?We?re all piggies?, Rosser says. ?We?re all flawed. The fun thing is to be able to laugh about our behavior and know we?ll be doing it later in the day?.

He has a point. Admitting it is being able to at least be aware of our behavior. And while the characters in the show were not aware of their piggy behavior, it was very obvious and crystal-clear to the young children watching it. While the show?s concept is very ?educational?, the execution of it is hardly preachy; everything is tongue-in-cheek and amusing. The dialogue is clever and witty with some cute laugh-out-loud puns. The 8-person cast often runs up and down the isles which is fun and the music is an eclectic mix of rap, rock, blues, etc.

The theater is pretty small so you can get a good view of the show no matter where you sit. You can also bring snacks to eat while watching the show.

The show is suitable for kids ages 3 and up and is an hour and 15 minutes long.

Where: The Snapple Theater Center
210 West 50th Street (between Broadway & 8th Ave.)
New York, NY

When: Piggy Nation is performed Saturdays at 11am & 5pm; Sundays at noon.

How Much: $30-44 standard admission; $125 premium seating (plus fees)

To purchase tickets:
By phone: (212) 921-7862. You can order online here.
Box Office hours: M-Sat: 10am-6 or 8pm; Sun: 11am-7:30pm

All photos courtesy of Piggy Nation the Musical.

I was not compensated for this post. I received tickets to the show.

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Senior Reviewer Maytal Wichman is the owner of Mama?s Bites and has also written for The Huffington Post. She has been living in New York City for twelve years and holds a Bachelor?s Degree in English Literature as well as a Law Degree, but blogging is her true passion. Maytal is a stay-at-home mom to three kids (ages 6, 4 and a baby) and loves finding great products that make her family?s life easier.

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Prepared Salads Market In Belgium To 2016

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Synopsis

The report presents detailed data on consumption trends in the Prepared Salads category in Belgium, analyzing consumption volumes and values at segment level. It also provides indispensable data on distribution channels and mergers & acquisitions in the sector. Furthermore the report enables readers to examine the components of change in the industry by looking at historic and future growth patterns ? how consumers? changes in behavior have affected total volumes, values and type of products chosen.

Summary

"Prepared Salads Market in Belgium to 2016" provides detailed data on market dynamics in the Prepared Salads category, providing marketers with the essential tools to understand both their own and their competitors? position in the market and the information to accurately identify the areas where they want to compete in the future. http://www.bharatbook.com/food-market-research-reports/prepared-salads-market-in-belgium-to-2016.html

This report brings together Canadean Intelligence's research, modeling and analysis expertise in order to develop uniquely detailed market data. This allows domestic and foreign companies to identify the market dynamics that account for Prepared Salads sales overall and to discover which categories and segments will see growth in the coming years.

Scope

"Prepared Salads Market in Belgium to 2016" provides you with the following:

? Historic and forecast growth dynamics by value and volume.
? Historic and forecast segmentation by value and volume.
? Distribution channel data by value.
? Latest mergers & acquisitions activity in the Chilled & Deli Foods sector in Belgium.

Reasons To Buy

? Enhance your understanding of the value and volume growth dynamics of the Prepared Salads category in Belgium.
? Promote growth in your business with detailed product sales segmentation for both volumes and values, as well as sales by distribution channel at the product category level.
? Identify the future pattern of market trends, from winners and losers to category dynamics; and thereby quickly and easily identify the key areas in which they want to compete in the future.

Table of Contents

1 Introduction
1.1 What is this Report About?
1.2 Definitions
1.2.1 Category Definitions
1.2.2 Distribution Channel Definitions
1.2.3 Volume Units and Aggregations
1.2.4 Exchange Rates
1.2.5 Methodology Summary
2 Belgium Prepared Salads Category Value
2.1 Prepared Salads Category Value 2007-11
2.2 Prepared Salads Category Value Forecast, 2012-16
3 Belgium Prepared Salads Category Volume
3.1 Prepared Salads Category Volume 2007-11
3.2 Prepared Salads Category Volume Forecast, 2012-16
4 Belgium Prepared Salads Segmentation by Value
4.1 Prepared Salads Segmentation by Value, 2007-11
4.2 Prepared Salads Segmentation Forecast by Value, 2012-16
5 Belgium Prepared Salads Segmentation by Volume
5.1 Prepared Salads Segmentation by Volume, 2007-11
5.2 Prepared Salads Segmentation Forecast by Volume, 2012-16
6 Belgium Prepared Salads Distribution Channel Data
6.1 Prepared Salads Distribution Channel Data by Value, 2009-12
7 Latest Sector Events
7.1 Sector Deals
7.1.1 Salad Signature acquires SalsaFoodGroup
8 Appendix
8.1 About Canadean
8.2 Disclaimer

For more information kindly visit :
Prepared Salads Market in Belgium to 2016

Or

Bharat Book Bureau
Tel: +91 22 27810772 / 27810773
Toll Free No for USA/Canada : 1-866-279-8368
Email: info@bharatbook.com
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Our Blog : http://blog.bharatbook.com/

Source: http://www.informationbible.com/article-prepared-salads-market-in-belgium-to-2016-296739.html

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Panasonic's restructuring plan will let it keep making TVs, for now

After rumors swirled that Panasonic was considering putting a stop to production of its well-regarded plasma HDTVs later this year, the company announced it will stay in the business. President Kazuhiro Tsuga revealed a three year growth plan for Panasonic to focus on batteries and entertainment systems for cars, as well as environmentally friendly housing developments. It will also streamline the number of departments by allowing each division to handle its own products from development to release. The beleaguered TV unit will stay, as Tsuga said it will consider walking away only as a last resort. Additionally, Chairman and former CEO Fumio Ohtsubo will retire in June. Some analysts believe Panasonic will still need to lay off workers if it's to turn things around, but we'll have to wait and see how Tsuga's plan comes together.

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Source: Reuters, Wall Street Journal, Nikkei, Asahi Shimbun

Source: http://feeds.engadget.com/~r/weblogsinc/engadget/~3/PR0kTfL9k4A/

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Saturday, March 30, 2013

Has The Time Come For Cat Caf?s in the U.S.? - PawNation

Has The Time Come For Cat Cafés in the U.S.? - PawNation

You Say.??

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Source: http://www.pawnation.com/2013/03/29/has-the-time-come-for-cat-cafes-in-the-u-s/

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Amazon to buy Goodreads for undisclosed sum

(AP) ? Amazon.com Inc., the world's biggest online retailer that got its start in bookselling, has agreed to buy book recommendations site Goodreads.

Financial terms of the deal were not disclosed. Amazon said Thursday that it "shares a passion for reinventing reading," with Goodreads.

"Goodreads has helped change how we discover and discuss books and, with Kindle, Amazon has helped expand reading around the world," said Russ Grandinetti, vice president of Kindle content for Amazon. "In addition, both Amazon and Goodreads have helped thousands of authors reach a wider audience and make a better living at their craft. Together we intend to build many new ways to delight readers and authors alike."

In addition to recommending books to read based on other books people have liked, Goodreads also serves as a social network for bookworms. It has 16 million members and was founded in 2007.

The deal is expected to close in the second quarter. Seattle-based Amazon.com Inc. says Goodreads headquarters will remain in San Francisco.

"Goodreads is a place for all readers no matter what books they read or how they read them, and we expect to keep it that way," said Amazon spokeswoman Kinley Pearsall in a statement, citing Zappos and the movie information website IMDb as examples. Amazon owns both but has kept them as stand-alone businesses.

Shares of Seattle-based Amazon closed up $1.19 at $266.49.

Associated Press

Source: http://hosted2.ap.org/APDEFAULT/495d344a0d10421e9baa8ee77029cfbd/Article_2013-03-29-US-Amazon-Acquisition/id-9d9aa1564e3440e8a5ebcd996129064f

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Friday, March 29, 2013

Researchers Test Implanted Brain Stimulator for ... - Health.com

BRAINsmall Researchers Test Implanted Brain Stimulator for Alzheimers

By Barbara Bronson Gray
HealthDay Reporter

THURSDAY, March 28 (HealthDay News) ? Researchers are testing whether applying electrical stimulation directly to the brains of people with Alzheimer?s disease might improve thinking, focus and alertness.

The process, called direct brain stimulation, or deep brain stimulation (DBS), has been used to treat Parkinson?s disease and is being tested as a treatment for other conditions, including traumatic brain injuries and obesity, according to the researchers.

Two women have had the electronic brain stimulators implanted, and eight more patients will participate in this initial research.

?There are a lot of studies out there that say physical or mental stimulation may reduce the risk or impact of Alzheimer?s disease, so we wondered if increasing stimulation to certain parts of the brain may be protective,? explained study co-author Dr. Douglas Scharre, director of the division of cognitive neurology at Ohio State University.

Scharre said that while Alzheimer?s tends to affect the temporal, parietal and frontal lobes of the brain, he wanted to focus particularly on the frontal lobe for two reasons: it?s typically the last brain area to degenerate, and its functions ? decision-making, problem-solving, focus and alertness ? are necessary for a person to be independent.

Placing the DBS system involves two steps. First, in a surgical procedure that requires about a three-day hospital stay, the patient has tiny holes made in each side of the skull, and hair-thin wires are placed in precise spots of the brain using computer-guided technology. The wires are fed through the neck ? in the subcutaneous tissue just under the skin ? and left there for about a week while the burr holes heal, explained Scharre.

Then, in an outpatient surgery, the patient has two battery packs that look like heart pacemakers placed on each side of the chest. The wires placed the week before are then connected to the batteries.

Six weeks after the second surgery, the stimulator is turned on. ?My job [as the neurologist] is to find the right settings to get the maximum benefit,? said Scharre. Each wire has four contacts, providing a wide range of different voltage combinations, and the challenge is to determine the right amount to produce the best benefit, he explained.

The research could potentially be of value to millions of Americans: a recent report from the Alzheimer?s Association found that one in every three seniors now dies while suffering from Alzheimer?s or another form of dementia. Alzheimer?s disease becomes progressively disabling with loss of memory, thinking skills, the ability to socialize and independence.

To assess the effects of DBS, the researchers give short tests to the patients, starting about two months after the surgeries, to evaluate their level of attention and alertness, and to see how fast they can complete a particular task. For example, one test shows a variety of different geometric shapes all over the page, and [the patient] is asked to pick out all the stars in a 30-second timeframe.

In addition to the evaluation of thinking-related functions, the researchers look for brain wave changes and perform MRI scans, PET imaging, brain scans and spinal fluid analysis. Scharre said the researchers will need a year?s worth of data to assess each patient and about two years to achieve the goal of involving 10 people in the research.

The first person to have the pacemaker implanted was Kathy Sanford, 57, who has early onset Alzheimer?s and has just finished 12 weeks of stimulation. ?Initially, we?ve seen some improvements in speed of processing and she did better on shifting tasks,? reported Scharre. ?While we?re happy we?re seeing changes, I would be very, very cautious; the real test is whether we see sustained effects over time.?

Kathy?s father, Joseph Jester, said the family has already seen signs that Kathy?s memory is improving.

Kathy is highly motivated to participate in the study, Jester explained. ?She has two daughters and a grandson who she is worried about, and [she] hopes if this treatment works, they would have an alternative should they inherit this disease.?

Jester said while he appreciates the opportunity for Kathy to participate in the study, it has been time consuming and sometimes disappointing as the physicians adjust and readjust pacemaker settings. ?The doctors assure us that [her settings] are on the best place possible and we need patience as she goes forward from here.?

As for other potential downsides to participating in the research, the two patients who have had the pacemakers and battery packs surgically placed have had no complications, according to Scharre. Should they have any problems associated with the actual stimulation, it?s easy to just turn it off, he noted.

Experts encouraged caution at this point in the study.

?This is interesting but preliminary research,? said Maria Carrillo, vice president of medical and scientific relations at the Alzheimer?s Association. But it is good to see alternative treatment methods for Alzheimer?s are being tested, she added.

More information

Learn how to create a plan to deal with Alzheimer?s from the Alzheimer?s Association.

HEALTHDAY Web XSmall Researchers Test Implanted Brain Stimulator for Alzheimers

Source: http://news.health.com/2013/03/28/researchers-test-implanted-brain-stimulator-for-alzheimers/

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Proximity to coal-tar-sealed pavement raises risk of cancer, study finds

Mar. 28, 2013 ? People living near asphalt pavement sealed with coal tar have an elevated risk of cancer, according to a study in the journal Environmental Science and Technology. Much of this calculated excess risk results from exposures in children, age six or younger, to polycyclic aromatic hydrocarbons (PAHs) from the sealant.

"The increased cancer risk associated with coal-tar-sealed asphalt (CSA) likely affects a large number of people in the U.S. Our results indicate that the presence of coal-tar-based pavement sealants is associated with significant increases in estimated excess lifetime cancer risk for nearby residents," said E. Spencer Williams, Ph.D., principal author of the study and Baylor University assistant research scientist at the Center for Reservoir and Aquatic Systems Research in Baylor's College of Arts & Sciences.

Researchers from Baylor University in Waco, Texas, and the in Austin, Texas, are the first to report on the potential human health effects of PAHs in settled house dust and soil in living spaces and soil adjacent to parking lots sealed with coal-tar-based products.

"Exposure to these compounds in settled house dust is a particularly important source of risk for children younger than six years of age, as they are expected to ingest this material at higher rates," Williams said. "This indicates that the use of coal-tar-based pavement sealants magnifies aggregate exposures to PAHs in children and adults in residences adjacent to where these products are used and is associated with human health risks in excess of widely accepted standards."

Data on PAHs in settled house dust used for this analysis were published previously by the same authors. In that study, settled house dust and parking lot dust were sampled for 23 ground-floor apartments in Austin, Texas. The parking lot surfaces adjacent to the apartments were coal-tar-sealed asphalt, asphalt-based sealant over asphalt pavement, or unsealed concrete. Concentrations of PAHs were 25 times higher in house dust in residences adjacent to coal-tar-sealed pavement compared to those with other pavement types. "This study was the first to find a strong association between a product or a behavior and PAHs in house dust," said Barbara Mahler, the USGS research hydrologist who oversaw the study.

For this study, doses and risk associated with residences adjacent to unsealed asphalt lots were considered relative to those adjacent to (CSA) parking lots. Benzo(a)pyrene concentrations in CSA-affected settled house dust were high relative to those reported in most parts of the U.S. where coal-tar-based sealcoat is not used (California and Arizona). Data for PAHs in coal-tar-sealed asphalt-affected soils and unsealed asphalt-affected soils are available from samples from New Hampshire and suburban Chicago.

The analysis did not consider exposure to the dust on the pavement itself, which has PAH concentrations 10s to 100s of times higher than those in house dust or soil, or inhalation of air over sealed pavement. "Over time, about half of the PAHs in the sealcoat are released into the air, and concentrations in air are extremely high, particularly in the hours to days after application," said Peter Van Metre, USGS research hydrologist and author of two papers on volatilization of PAHs from sealcoat.

Sealcoat is a black, shiny substance sprayed or painted on the asphalt pavement of parking lots, driveways, and playgrounds to improve appearance and protect the underlying asphalt. An estimated 85 million gallons of coal-tar-based sealant are applied to pavement each year, primarily east of the Continental Divide in the U.S. and parts of Canada. Coal-tar-based pavement sealants are 15 to 35 percent coal-tar pitch, which has been classified as a human carcinogen by the International Agency for Research on Cancer. Over time, the dried sealant is worn away from pavement surfaces, and the resulting mobile dust particles can be transported into nearby homes.

"Although the analysis presented here is based on a limited dataset, the results indicate that biomonitoring might be warranted to characterize the exposure of children and adults to PAHs associated with coal-tar-based pavement sealant," Williams said. "Further investigation is also needed into the impacts of coal-tar-based pavement sealants on PAH concentrations in indoor and outdoor environments."

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Story Source:

The above story is reprinted from materials provided by Baylor University.

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


Journal Reference:

  1. E. Spencer Williams, Barbara J. Mahler, Peter C. Van Metre. Cancer Risk from Incidental Ingestion Exposures to PAHs Associated with Coal-Tar-Sealed Pavement. Environmental Science & Technology, 2013; 47 (2): 1101 DOI: 10.1021/es303371t

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/~3/fZe2BuEECVo/130328125236.htm

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Risk and reward at the dawn of civilian drone age

(AP) ? The dawn of the age of aerial civilian drones is rich with possibilities for people far from the war zones where they made their devastating mark as a weapon of choice against terrorists.

The unmanned, generally small aircraft can steer water and pesticides to crops with precision, saving farmers money while reducing environmental risk. They can inspect distant bridges, pipelines and power lines, and find hurricane victims stranded on rooftops.

Drones ? some as tiny as a hummingbird ? promise everyday benefits as broad as the sky is wide. But the drone industry and those eager to tap its potential are running headlong into fears the peeping-eye, go-anywhere technology will be misused.

Since January, drone-related legislation has been introduced in more than 30 states, largely in response to privacy concerns. Many of the bills would prevent police from using drones for broad public surveillance or to watch individuals without sufficient grounds to believe they were involved in crimes.

Stephen Ingley, executive director of the Airborne Law Enforcement Association, says resistance to the technology is frustrating. Drones "clearly have so much potential for saving lives, and it's a darn shame we're having to go through this right now," he said.

But privacy advocates say now is the time to debate the proper use of civilian drones and set rules, before they become ubiquitous. Sentiment for curbing domestic drone use has brought the left and right together perhaps more than any other recent issue.

"The thought of government drones buzzing overhead and constantly monitoring the activities of law-abiding citizens runs contrary to the notion of what it means to live in a free society," Sen. Charles Grassley, R-Iowa, said at a recent hearing of the Senate Judiciary Committee.

With military budgets shrinking, drone makers have been counting on the civilian market to spur the industry's growth. Some companies that make drones or supply support equipment and services say the uncertainty has caused them to put U.S. expansion plans on hold, and they are looking overseas for new markets.

"Our lack of success in educating the public about unmanned aircraft is coming back to bite us," said Robert Fitzgerald, CEO of the BOSH Group of Newport News, Va., which provides support services to drone users.

"The U.S. has been at the lead of this technology a long time," he said. "If our government holds back this technology, there's the freedom to move elsewhere ... and all of a sudden these things will be flying everywhere else and competing with us."

Law enforcement is expected to be one of the bigger initial markets for civilian drones. Last month, the FBI used drones to maintain continuous surveillance of a bunker in Alabama where a 5-year-old boy was being held hostage.

In Virginia, the state General Assembly passed a bill that would place a two-year moratorium on the use of drones by state and local law enforcement. The measure is supported by groups as varied as the American Civil Liberties Union on the left and the Virginia Tea Party Patriots Federation on the right.

Gov. Bob McDonnell is proposing amendments that would retain the broad ban on spy drones but allow specific exemptions when lives are in danger, such as for search-and rescue operations. The legislature reconvenes on April 3 to consider the matter.

Seattle abandoned its drone program after community protests in February. The city's police department had purchased two drones through a federal grant without consulting the city council.

In Congress, Rep. Ed Markey, D-Mass., co-chairman of the House's privacy caucus, has introduced a bill that prohibits the Federal Aviation Administration from issuing drone licenses unless the applicant provides a statement explaining who will operate the drone, where it will be flown, what kind of data will be collected, how the data will be used, whether the information will be sold to third parties and the period for which the information will be retained.

Privacy advocates acknowledge the many benign uses of drones. In Mesa County, Colo., for example, an annual landfill survey using manned aircraft cost about $10,000. The county recently performed the same survey using a drone for about $200.

Drones can help police departments find missing people, reconstruct traffic accidents and act as lookouts for SWAT teams. Real estate agents can have them film videos of properties and surrounding neighborhoods, offering clients a better-than-bird's-eye view though one that neighbors may not wish to have shared.

"Any legislation that restricts the use of this kind of capability to serve the public is putting the public at risk," said Steve Gitlin, vice president of AeroVironment, a leading maker of smaller drones.

Yet the virtues of drones can also make them dangerous, privacy advocates say. The low cost and ease of use may encourage police and others to conduct the kind of continuous or intrusive surveillance that might otherwise be impractical.

Drones can be equipped with high-powered cameras and listening devices, and infrared cameras that can see people in the dark.

"High-rise buildings, security fences or even the walls of a building are not barriers to increasingly common drone technology," Amie Stepanovich, director of the Electronic Privacy Information Council's surveillance project, told the Senate panel.

Civilian drone use is limited to government agencies and public universities that have received a few hundred permits from the FAA. A law passed by Congress last year requires the FAA to open U.S. skies to widespread drone flights by 2015, but the agency is behind schedule and it's doubtful it will meet that deadline. Lawmakers and industry officials have complained for years about the FAA's slow progress.

The FAA estimates that within five years of gaining broader access about 7,500 civilian drones will be in use.

Although the Supreme Court has not dealt directly with drones, it has OK'd aerial surveillance without warrants in drug cases in which officers in a plane or helicopter spotted marijuana plants growing on a suspect's property.

But in a case involving the use of ground-based equipment, the court said police generally need a warrant before using a thermal imaging device to detect hot spots in a home that might indicate that marijuana plants are being grown there.

In some states economic concerns have trumped public unease. In Oklahoma, an anti-drone bill was shelved at the request of Republican Gov. Mary Fallin, who was concerned it might hinder growth of the state's drone industry. The North Dakota state Senate killed a drone bill in part because it might impede the state's chances of being selected by the Federal Aviation Administration as one of six national drone test sites, which could generate local jobs.

A bill that would have limited the ability of state and local governments to use drones died in the Washington legislature. The measure was opposed by the Boeing Co., which employs more than 80,000 workers in the state and which has a subsidiary, Insitu, that's a leading military drone manufacturer.

Sen. Rand Paul, R-Ky., recently drew attention to the domestic use of drones when he staged a Senate filibuster, demanding to know whether the president has authority to use weaponized drones to kill Americans on American soil. The White House said no, if the person isn't engaged in combat. Industry officials worry that the episode could temporarily set back civilian drone use.

"The opposition has become very loud," said Gitlin of AeroVironment, "but we are confident that over time the benefits of these solutions are going to far outweigh the concerns, and they'll become part of normal life in the future."

___

Associated Press writer Michael Felberbaum in Richmond, Va., contributed to this report.

___

Follow Joan Lowy on Twitter: http://www.twitter.com/AP_Joan_Lowy

Associated Press

Source: http://hosted2.ap.org/APDEFAULT/89ae8247abe8493fae24405546e9a1aa/Article_2013-03-29-Everyday%20Drones/id-2898ef918ddb4166839776f7d86a1295

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Thursday, March 28, 2013

Semiconductors: Touching moments with a radiant outcome

Mar. 27, 2013 ? Microstructures made of adjoining semiconductor disks could lead to powerful nanoscale sensors.

Many users of microwave ovens have had the frightening experience of leaving a fork, crumpled piece of aluminum foil or some other pointy metal item inside the cooking chamber. The sharp metal object acts as an antenna for the oven's microwave radiation, causing strong local heating or sparking. Jing Hua Teng from the A*STAR Institute of Materials Research and Engineering (IMRE) and colleagues in Singapore and the UK have now observed a similar antenna effect, involving a different sort of electromagnetic radiation -- known as terahertz (THz) radiation -- in a microfabricated semiconductor structure1. Their discovery could find application in areas ranging from biosensing to airport security scanners.

Teng and his co-workers developed tiny semiconductor structures made of the chemical elements indium and antimony. From this material, they produced disks of 20 micrometers in diameter, which they arranged such that pairs just touched. The gap between contiguous disks was merely tens to hundreds of nanometers wide (see image). When the researchers exposed the structures to THz radiation, they found that the radiation intensity in the gap was enhanced by more than a hundred times.

Confining and enhancing THz radiation is significant for two reasons, according to Teng. First, electromagnetic waves in the THz range can be used in a broad range of applications, for example, to study the structure of large biomolecules. As this sort of radiation can penetrate textiles but is less energetic than X-rays -- or microwaves -- it is also well suited for use in body scanners at airports. The second reason as to why the new results are important is more fundamental. "We have produced this particular touching-disk structure to test, in the THz regime, intriguing theoretical predictions made for optical radiation," explains Teng. "Building a device such as ours for visible light is much more challenging, as it would involve even smaller structures."

The now-verified theoretical predictions came from collaborators at Imperial College London in the UK. "For the present work, IMRE is in charge of the materials growth and the structure fabrication, while Imperial College contributes structure design and characterization," says Teng. The A*STAR researchers are now focused on practical applications: they will further explore the unique properties of their semiconductor materials and try to develop devices for THz technology. The group has already succeeded in tuning the THz response of their structure2, meaning that they can conveniently adjust the frequency response of their device for different applications.

The A*STAR-affiliated researchers contributing to this research are from the Institute of Materials Research and Engineering

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Story Source:

The above story is reprinted from materials provided by The Agency for Science, Technology and Research (A*STAR).

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


Journal References:

  1. S. M. Hanham, A. I. Fern?ndez-Dom?nguez, J. H. Teng, S. S. Ang, K. P. Lim, S. F. Yoon, C. Y. Ngo, N. Klein, J. B. Pendry, S. A. Maier. Broadband Terahertz Plasmonic Response of Touching InSb Disks. Advanced Materials, 2012; 24 (35): OP226 DOI: 10.1002/adma.201202003
  2. Liyuan Deng, Jinghua Teng, Hongwei Liu, Qing Yang Wu, Jie Tang, Xinhai Zhang, Stefan A. Maier, Kim Peng Lim, Chun Yong Ngo, Soon Fatt Yoon, Soo Jin Chua. Direct Optical Tuning of the Terahertz Plasmonic Response of InSb Subwavelength Gratings. Advanced Optical Materials, 2013; 1 (2): 128 DOI: 10.1002/adom.201200032

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/top_news/top_technology/~3/E-028H-ylWo/130327162418.htm

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Xbox SmartGlass Will Be Your BFF While Watching Game of Thrones

HBO's epic fantasy series Game of Thrones returns this Sunday and if you a) have an Xbox b) are an HBO subscriber and c) own an iOS device or Windows 8 tablet, you're going to want to download the SmartGlass app ahead of the premiere. More »


Source: http://feeds.gawker.com/~r/gizmodo/full/~3/U5yznBeh3Rg/xbox-smartglass-will-be-your-bff-while-watching-game-of-thrones

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With an Arched Bookshelf You're Never At Risk of an Avalanche

Designer Ivan Zhang has the perfect solution for anyone who's tired of angling the last book on a shelf so the rest of them don't perpetually fall over. Instead of some space-wasting bookend, he's simply added graceful arching shelves to this piece which tasks gravity with keeping them all standing. More »


Source: http://feeds.gawker.com/~r/gizmodo/full/~3/C3YYi3lQPM0/with-an-arched-bookshelf-youre-never-at-risk-of-an-avalanche

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Astronomers discover new kind of supernova

Mar. 26, 2013 ? Supernovae were always thought to occur in two main varieties. But a team of astronomers including Carnegie's Wendy Freedman, Mark Phillips and Eric Persson is reporting the discovery of a new type of supernova called Type Iax.

This research has been accepted for publication in The Astrophysical Journal.

Previously, supernovae were divided into either core-collapse or Type Ia categories. Core-collapse supernovae are the explosion of a star about 10 to 100 times as massive as our sun. Type Ia supernovae are the complete disruption of a tiny white dwarf.

This new type, Iax, is fainter and less energetic than Type Ia. Although both types come from exploding white dwarfs, Type Iax supernovas may not completely destroy the white dwarf. "A Type Iax supernova is essentially a mini supernova," says lead author Ryan Foley, Clay Fellow at the Harvard-Smithsonian Center for Astrophysics (CfA). "It's the runt of the supernova litter."

The research team--which also included Max Stritzinger, formerly of Carnegie--identified 25 examples of the new type of supernova. None of them appeared in elliptical galaxies, which are filled with old stars. This suggests that Type Iax supernovas come from young star systems.

Based on a variety of observational data, the team concluded that a Type Iax supernova comes from a binary star system containing a white dwarf and a companion star that has lost its outer hydrogen, leaving it helium dominated. The white dwarf collects helium from the normal star.

Researchers aren't sure what triggers a Type Iax. It's possible that the outer helium layer ignites first, sending a shock wave into the white dwarf. Alternatively, the white dwarf might ignite first due to the influence of the overlying helium shell.

Either way, it appears that in many cases the white dwarf survives the explosion, unlike in a Type Ia supernova where the white dwarf is completely destroyed.

The team calculates that Type Iax supernovae are about a third as common as Type Ia supernovae. The reason so few have been detected is that the faintest are only one-hundredth as bright as a Type Ia supernova.

"The closer we look, the more ways we find for stars to explode," Phillips said.

The Large Synoptic Survey Telescope could discover thousands of Type Iax supernovas over its lifetime.

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Story Source:

The above story is reprinted from materials provided by Carnegie Institution.

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


Journal Reference:

  1. Ryan J. Foley, P. J. Challis, R. Chornock, M. Ganeshalingam, W. Li, G. H. Marion, N. I. Morrell, G. Pignata, M. D. Stritzinger, J. M. Silverman, X. Wang, J. P. Anderson, A. V. Filippenko, W. L. Freedman, M. Hamuy, S. W. Jha, R. P. Kirshner, C. McCully, S. E. Persson, M. M. Phillips, D. E. Reichart, A. M. Soderberg. Type Iax Supernovae: A New Class of Stellar Explosion. The Astrophysical Journal, 2013; 767 (1): 57 DOI: 10.1088/0004-637X/767/1/57

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/most_popular/~3/zVYa_cE92VM/130326133337.htm

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Scientists examine nothing, find something

Two studies of vacuums suggest that the speed of light in a vacuum might fluctuate, pointing the way to a quantum mechanical explanation for why the speed of light and other so-called constants are what they are.

By Eoin O'Carroll,?Staff / March 25, 2013

A young person attempts to navigate a laser maze during the grand opening ceremony for the Angry Birds Space Encounter at the Kennedy Space Center earlier this month. Researchers say that the speed of light in a vacuum, long thought to be a universal constant, may actually fluctuate.

Malcolm Denemark/Florida Today/AP

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Where did the speed of light in a vacuum come from? Why is it 299,792,458 meters per second and not some other figure?

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The simple answer is that, since 1983, science has defined a meter by the speed of light: one meter equals the distance light travels in one?299,792,458th of a second.?But that doesn't really answer our question. It's just the physics equivalent of saying, "Because I said so."?

Unfortunately, the deeper answer has been equally unsatisfying: The speed of light in a vacuum, according to physics textbooks, just is. It's a constant, one of those numbers that defines the universe. That's the physics equivalent of saying, "Because the cosmos said so."?

Or did it? A pair of studies suggest that this universal constant?might not be so constant after all. In the first study, Marcel Urban from the University of Paris-Sud and his team found that the speed of light in a vacuum varies ever so slightly.

This happens because what we think of as nothing isn't really nothing. Even if you were to create a perfect vacuum, at the quantum level it would still be populated with pairs of tiny "virtual" particles that flash in and out of existence and whose energy values fluctuate. As a consequence of these fluctuations, the speed of a photon passing through a vacuum varies, about?50 quintillionths of a second per square meter.

That may not sound like much, but it's enough to point the way toward a new underlying physics.

Before 1905, when?Albert Einstein formulated his special theory of relativity, scientists regarded space and time as composing the backdrop of the universe, the immovable stage upon which motion takes place. The only problem with this model is that light seems to move at the same speed regardless of the speed of the its source, creating an apparent paradox. Einstein's theory resolved this paradox by replacing Newton's absolutes of time and space with a single absolute, the speed of light.

But if even that can vary, what's left for us to hang our hat on? Nothing, it turns out.

But, as we just noted, nothing is something. Urban's paper suggests that the speed of light and other constants "are not fundamental constants but observable parameters of the quantum vacuum." In other words, the speed of light emerges from the properties of particles in the vacuum.

In the other paper, physicists?Gerd Leuchs and Luis L. S?nchez-Soto, from the Max Planck Institute for the Physics of Light in Erlangen, Germany, hypothesize how this emergence occurs. They suggest that the impedance of a vacuum ? another electromagnetic 'constant' whose value depends on the speed of light ? itself depends only on the electric charge of the particles in the vacuum, and not their masses.

If their hypothesis is correct, it answers our question of where the speed of light comes from: it emerges from the total number of charged particles in the universe.?

Time will tell if this hypothesis is correct. And of course, by "time," we mean "space and time," by which we mean "the speed of light," by which we mean "nothing," by which we mean "the properties of the quantum vacuum." But in the meantime ? or whatever ? you can thank us for informing you that, as the speed of light in a vacuum continues to fluctuate, so too does the length of the meter. Think nothing of it.?

Source: http://rss.csmonitor.com/~r/feeds/science/~3/JZLe20Gk_Iw/Scientists-examine-nothing-find-something

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