রবিবার, ৩০ জুন, ২০১৩

Obama announces African electricity initiative, reflects on Mandela

President Barack Obama addresses a crowd at the University of Cape Town in South Africa, Sunday. Obama makes the point that 60 percent of Africans are under 30-years-old while discussing the region's future.

By Andrew Rafferty, Staff Writer, NBC News

President Barack Obama on Sunday announced a sweeping?initiative?to help bring electrical power to some of Africa's poorest regions, while reflecting on the legacy of Nelson Mandela and urging the continent to continue the work of?South Africa's ailing former leader.

Speaking at the University of Cape Town in South Africa, the president announced a?$7 billion initiative?to bring electrical power to sub-Saharan Africa in an effort to help modernize the continent and better connect it with the rest of the world.


The program, called "Power Africa," will also include more than $9 billion in investment from private companies, according to the White House.??The iniative will focus on six African countries:?Ethiopia, Ghana, Kenya, Liberia, Nigeria and Tanzania.?

"We believe that nations must have the power to connect their people to the promise of the 21st century. Access to electricity is fundamental to opportunity in this age," Obama said.

"It's the connection that's needed to plug Africa into the grid of the global economy.? You've got to have power," he added, citing that two-thirds of the population in sub-Saharan Africa does not have regular access to household electricity.?

Obama's hopes to modernize the continent came the same day as he urged Africa's youth to remember the?sacrifices?of beloved leader Mandela, who is in "critical but stable" condition in a South African hospital, according to government officials.

Earlier Sunday, the president and his family visited Robben Island prison, the place where Mandela spent most of his 27 years in jail. The 94-year-old anti-apartheid champion has been in the hospital for weeks, and his health has become one of the main?story lines?of the president's week-long trip.

In his speech in Cape Town, Obama said that standing in Mandela's small cell helped his daughters appreciate the?sacrifices made by?the the leader and is an experience they will never forget.

"Nelson Mandela showed us that one man's courage can move the world," he said.

White House officials said the speech drew inspiration from remarks delivered by Robert F. Kennedy in June of 1966 at the same university. Kennedy's now famous "ripple of hope" speech was delivered soon after Mandela was?sentenced?to prison also called on African youth to fight against injustice.

"There is no question that Africa is on the move, but it's not moving fast enough...That's where you come in -- the young people of Africa.? Just like previous generations, you've got choices to make. You get to decide where the future lies," Obama said.

While in Cape Town, the president also visited an HIV/AIDS clinic where he commended the work of President George W. Bush in helping fight AIDS in Africa.?

"We have the possibility of achieving an AIDS-free generation...and making sure that everybody in our human family is able to enjoy their lives and raise families, and succeed in maintaining their health here in Africa and around the world," Obama said.

NBC's Shawna Thomas contributed to this report.

Source: http://feeds.nbcnews.com/c/35002/f/663306/s/2e028d3f/l/0Lusnews0Bnbcnews0N0C0Inews0C20A130C0A60C30A0C192210A560Eobama0Eannounces0Eafrican0Eelectricity0Einitiative0Ereflects0Eon0Emandela0Dlite/story01.htm

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মঙ্গলবার, ২৫ জুন, ২০১৩

What is the best cruise ship for first-time cruisers? | CruiseSource

I have plenty of friends who have yet to go on a cruise vacation.? Not surprising due to the fact that about 70% of the US still has not been on a cruise vacation.

They each have their own reasons for not trying it out yet from thinking there is not enough to do on a cruise ship to concerns about motion sickness. ?Plus many of my friends seem to have stuck with their childhood family vacation traditions like renting a beach house for a week in the summer.

But, after hearing from their friends how their recent cruise experience or seeing their friends cruise photos on Facebook my cruise rookie friends start asking me questions about what would be a good cruise for them to test-out to see if cruising is for them.

When they say ?test-out?, they are saying ?what is a short 3 to 4 day cruise that we can go on to see what this whole cruising thing is all about.?

The issue is that most 3 to 5 night cruises are on slightly older ships that are not a true representation of what cruising is all about in 2013.? ?The cruise lines have pushed the envelope over the last 5 years with innovative new ships that are engineering masterpieces.

The cruise lines deploy their newest most innovative ships on 7+ night cruise vacation, with the exception of Royal Caribbean?s Liberty of the Seas.??Making the Liberty of the Seas my top recommendation for 1st time cruisers. ?[Help spread the word to your first-time cruisers]

The Liberty of the Seas was launched in 2007. Although 6 years old, there are only a few cruise ships larger than the Liberty of the Seas.? ?The Liberty of the Seas offers:

  • Rock-climbing wall
  • Ice-skating rink
  • Mini-golf course
  • Full-sized basketball court
  • Full-sized boxing ring
  • 4 pools
  • 10 Whirlpools, with 2 of them overlooking the ocean
  • State of the Art Fitness facility offering Yoga and Tai Chi classes.

The Liberty of the Seas is the largest, most innovative cruise ship offering 4 ? 5 night cruises.? ?From November 2013 ? April 2014, the Liberty of the Seas will be sailing from Ft Lauderdale on 4 and 5 night Caribbean Voyages starting at low as $249 + taxes per person*!? ??Click to search for rates and availability.?

90% of the time, I try to get my first time cruising friends on the Liberty of the Seas. ?For some families with a bigger budget, I find the 3 ? 4 nt. Disney Dream Cruise to be great place to start.

*$249 per person rate is on the 4 night December 12th, 2013 departure of the Liberty of the Seas.?

Click Liberty of the Seas photos below to enlarge:

Captain Surfing Flowrider

Captain Surfing Flowrider

Pool Deck

Pool Deck

Full Court Basketball

Full Court Basketball

Ice Skating with the Kids

Ice Skating with the Kids

Liberty of the Seas exterior photo

Photo of balconies by ade_rob

Liberty of the Seas vwaagan1 on Instagram

Credit: roger4336 on Flickr

Credit: roger4336 on Flickr

?

Source: http://cruisesource.us/2013/06/best-ship-for-first-time-cruisers/

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মঙ্গলবার, ৭ মে, ২০১৩

Report: The Next Xbox Will Let You Play Games Offline

Here's a promising development in the ever-confusing drama surrounding Microsoft's next gaming console: a new report suggests that you will indeed be able to play Durango games offline.

Read more...

    

Source: http://feeds.gawker.com/~r/gizmodo/full/~3/XdXzUSupNt4/report-the-next-xbox-will-let-you-play-games-offline-493136979

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Prizes awarded for translated fiction, poetry

NEW YORK (AP) ? An experimental Hungarian novel and a collection of Romanian poetry have won prizes for best English language translations.

Laszlo Krasznahorkai's (LAHZ'-lo krahs-na-HOAR'-kay's) "Satantango," translated into English by Georges Szirtes (ZUR'-tes), won the Best Translated Book Award for fiction.

The poetry winner was Nichita Stanescu's (neh-KEE'-ta STAH'-nes-koo's) "Wheel With a Single Spoke," translated by Sean Cotter.

Thanks to a grant from Amazon.com, winning authors and translators each receive $5,000.

The awards were announced Monday by Three Percent, a resource for international literature that is based at the University of Rochester. The project is named for a widely reported statistic that only 3 percent of books published in the U.S. are works in translation.

Source: http://news.yahoo.com/prizes-awarded-translated-fiction-poetry-172156447.html

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The reason why Nobody is Talking About collagen nutritional ... - covol

Hydrolyzed collagen supplementations which includes Hydrolyzed collagen healthy proteins often known as HCP is the central structural protein that creates up interaction tissues chemistry (cartilage, lien, tendons in addition to skin area bones). Collagen is extracted from muscular tissues or skins of animals and further proceeds towards type of jelly utilized for variety of purposes. When hydrolyzed collagen is a healthy proteins, it is usually coupled with other meals or blended right into shakes as part of a stable or healthy diet. Muscle growth can also put it to use included in an increased protein eating plan. Hydrolyzed collagen is incredibly safe as well as secured, making it even more sensible decision for the in the long run pain solutions rather than the other medicines. Becasue it is name suggests, its position in fibrous tissue of ligaments epidermis and muscles make them to keep glued and firm. Moreover, your company bones turn into Skin Supplement Here are a few belonging to the higher types to collagen products. This really is merely due to for all those going for a collagen product, your system can give out the health proteins into part pieces. Individuals properly lost weight and also kept the load off progressively did that by wide laborious do the job, not by way of relying on just about any fast solution. As well as, regular fitness and correct diet will still be necessary. Supplementations for Muscle development For people whose goal is always to realize excess weight through exercise, professionals usually recommend necessary protein supplementation. Some sort of whey supplement should be a ample better selection than just a collagen dietary supplement, if this becomes mind-numbing to increase health proteins intake through eating plan. It happens to be thought to be the leading ingredient with nails, curly hair and even skin tone. Hydrolyzed collagen nutritional supplements are helpful for wild hair, skin as well as nails collectively assistance with betterment with eye health and fitness, prevention of heart conditions together with it also work on the stamina with athletics so they could very well improve their performance drastically in a very little while of time.

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It turned out ruled this past year such selling procedures are unethical as well as unacceptable, along with banks and loan companies were shared with repay the many of us who had been mis-sold PAYMENT PROTECTION INSURANCE. All this relies on just how much the appeared to be, and how long that it was sold intended for. They ought to work on the no-win no-fee foundation and offer a totally free assessment of whether you will be permitted develop a payment protection insurance state, meaning you could have not shed. Most people have no clue how to overcome lenders carryout a payment protection insurance declare, your ones which in turn might discover likely simply no match with the high-street giants and they?re immediately dismissed. It may help the client to loan if he struggles to discuss with his financial obligations. customer, you are going to surely have UK PPI Claims Company Problem is wrong advertising of payment protection insurance coverages to inappropriate clients that thoroughly increase their fiscal burden. In order to get the compensation sum and also organising PPI claim method by yourself and then you have to know about entire progression sequentially. You are able to which you had been not given the terms as well as condition of the actual policy. Before that let us take glimpse, the fact that PPIs were miss-sold; the exact borrowers were explained to it had been recommended to process the money, covering up the reality that it previously was elective. This was distributed where not required. The expenses are only taken when they win and even depend on quantity of the commission. Normally some percent in the total pay out is acquired while fee. There are various individual who become victim of mis marketed PPI. Yet initial complains includes rarely win to obtain compensation just for losses. By Vijuhua dinisara

Tags: Editorial

Category: Games

Source: http://www.covol.org/the-reason-why-nobody-is-talking-about-collagen-nutritional-supplements.html

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রবিবার, ৫ মে, ২০১৩

Matt Lauer, PSY Do "Gentleman" Dance; Today Viewers Uncomfortable

Source: http://www.thehollywoodgossip.com/2013/05/matt-lauer-psy-do-gentleman-dance-today-viewers-uncomfortable/

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Chinese Researchers Create Potentially Deadly Strains of Avian Flu

A team of Chinese researchers have deliberately created deadly new strains of influenza in a veterinary laboratory?and are now on the receiving end of severe criticism from across the wider scientific community.

The controversial research, carried out at China?s National Avian Influenza Reference Laboratory at Harbin Veterinary Research Institute, has mixed the H5N1 bird-flu virus?which is lethal but not easily transmitted between humans?with a 2009 strain of H1N1 that is very infectious to humans. That's a bad combination as far as humankind is concerned.

The researchers claim they were attempting to emulate what happens in nature when two strains come together to form a hybrids, with shared genetic material. The result is, according to the researchers, ?H5N1 viruses [that] have the potential to acquire mammalian transmissibility?. In total, the team created 127 different viral hybrids? five of which were shown to easily pass through the air between laboratory guinea pigs. Great!

Understandably, the researchers are receiving their fair share of criticism. For instance, Robert May, former Chief Scientific Adviser to the UK Government, told The Independent:

?They claim they are doing this to help develop vaccines and such like. In fact the real reason is that they are driven by blind ambition with no common sense whatsoever. The record of containment in labs like this is not reassuring. They are taking it upon themselves to create human-to-human transmission of very dangerous viruses. It?s appallingly irresponsible.?

It remains unclear how easily the hybrids would spread between humans, and for that matter how lethal they would be if they did. But to an extent, that's not really the point: the concern here is over the fact that the researchers are even trying to create a virus which combines transmissibility and lethality in the first place.

It's not the first time such studies have raised concerns. Back in 2011, researchers from Erasmus Medical Centre in Rotterdam and University of Wisconsin, Madison created a version of H5N1 that could be passed between ferrets through the air. That incident bought about a moratorium which saw research cease for an extended period. It remains unclear what the fallout from the Chinese research will be. [Independent]

Source: http://gizmodo.com/chinese-researchers-create-potentially-deadly-strains-o-488605034

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শুক্রবার, ৩ মে, ২০১৩

Saturn's youthful appearance explained

Wednesday, May 1, 2013

As planets age they become darker and cooler. Saturn however is much brighter than expected for a planet of its age - a question that has puzzled scientists since the late sixties. New research published in the journal Nature Geoscience has revealed how Saturn keeps itself looking young and hot.

Researchers from the University of Exeter and the Ecole Normale Sup?rieure de Lyon found that layers of gas, generated by physical instability deep within the giant planet, prevent heat from escaping and have resulted in Saturn failing to cool down at the expected rate.

Professor Gilles Chabrier from Physics & Astronomy at the University of Exeter said: "Scientists have been wondering for years if Saturn was using an additional source of energy to look so bright but instead our calculations show that Saturn appears young because it can't cool down. Instead of heat being transported throughout the planet by large scale (convective) motions, as previously thought, it must be partly transferred by diffusion across different layers of gas inside Saturn. These separate layers effectively insulate the planet and prevent heat from radiating out efficiently. This keeps Saturn warm and bright."

Characterised by its distinctive rings, Saturn is one of the largest planets in our Solar System, second only in size to massive Jupiter. It is primarily made of hydrogen and helium and its excessive brightness has previously been attributed to helium rains, the result of helium failing to mix with Saturn's hydrogen rich atmosphere.

Layered convection, like that recently discovered in Saturn, has been observed in the Earth's oceans where warm, salty water lies beneath cool and less salty water. The denser, salty water prevents vertical currents forming between the different layers and so heat cannot be transported efficiently upwards.

These findings suggest that the interior structure, composition and thermal evolution of giant planets in our Solar System, and beyond, may be much more complex than previously thought.

###

University of Exeter: http://www.exeter.ac.uk

Thanks to University of Exeter 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.

This press release has been viewed 37 time(s).

Source: http://www.labspaces.net/128060/Saturn_s_youthful_appearance_explained

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মঙ্গলবার, ১৬ এপ্রিল, ২০১৩

Exit Q&A - Demotix Founder Turi Munthe Gives His Advice On How To Build A Startup

turiBack in November last year image giant Corbis acquired Demotix, the crowd-sourced breaking news picture and video agency which had launched in 2008. We present for you a lighting fast 'exit Q&A' with founder and former CEO Turi Munthe, who has since left to pursue new projects.

Source: http://feedproxy.google.com/~r/Techcrunch/~3/5m2XOlCRU4Q/

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More international support needed for Jordan to cope with Syrian refugees, says UN development chief

Greater international support is needed for countries currently absorbing increasing waves of refugees fleeing Syria, including Jordan.

Amman, Jordan (PRWEB) April 11, 2013

Greater international support is needed for countries currently absorbing increasing waves of refugees fleeing Syria, including Jordan, the United Nations Development Programme (UNDP) Administrator Helen Clark said yesterday as she wrapped up a four day visit to Jordan.

The deterioration of the security and humanitarian situation in Syria has forced thousands of Syrians to flee and seek refuge in neighbouring countries, with Jordan alone currently hosting nearly half a million internationally displaced persons (IDPs) from Syria, according to news reports.

?Jordan is suffering a crisis clearly caused by the spillover of the very tragic events in Syria,? said Helen Clark, who met with HM Queen Rania and a range of Jordan senior officials, women leaders, activists, donors and the UN Country Team there. ?As the international community addresses the significant needs of the refugees, I think it is important that Jordan?s particular circumstances are also taken into account.?

More than 1.3 million Syrian refugees have crossed borders into Iraq, Jordan, Lebanon and Turkey since conflict erupted. The number could exceed four million by the end of the year, the UN Refugee Agency announced this week. Since the beginning of the year, 1,500 to 2,000 Syrians have been pouring into Jordan daily.

?The refugee flow is very, very significant and we acknowledge not only Jordan?s generosity in keeping its border open but also the considerable strain on its host communities for jobs, energy, water, health and education services,? Helen Clark said.

This large influx of refugees into Jordan is putting a considerable burden on local Jordanian host communities, and their social and economic services.

?As some agencies like UNHCR and UNICEF focus on the Syrian refugees, others, including UNDP, are looking at how we can help alleviate pressure on the host communities who are under strain as well,? Helen Clark said. ?This is a crisis that is not only affecting Syria but clearly its neighbours too.?

During her visit, Helen Clark met with Jordan?s Prime Minister Abdullah Ensour to discuss how UNDP can support these host communities in Jordan and increase their ability to not only absorb the influx of refugees but also to mitigate any possible tensions between the refugees and the host communities through support to basic social services and job creation for Jordanian youth.

The Prime Minister also briefed Helen Clark on the proposed reform programme and potential UNDP support.

?This is a very substantial reform programme,? said Helen Clark. ?Should this programme be approved, we are there for Jordan across the wide range of areas UNDP works in, including governance and political development reform, decentralization and poverty reduction.?

Helen Clark was in Jordan to attend the Arab Development Forum and a key UNDP regional meeting of its country-level offices in the Arab States.

Christina.lonigro@undp.org
UNDP
+1-212-9065301
Email Information

Source: http://news.yahoo.com/more-international-support-needed-jordan-cope-syrian-refugees-194622312.html

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সোমবার, ১৫ এপ্রিল, ২০১৩

Will the Supreme Court End Human Gene Patents?

An anonymous reader writes "Monday, the Supreme Court will hear a case on the validity of breast cancer gene patents. The court has a chance to end human gene patents after three decades. From the article: 'Since the 1980s, patent lawyers have been claiming pieces of humanity's genetic code. The United States Patent and Trademark Office has granted thousands of gene patents. The Federal Circuit, the court that hears all patent appeals, has consistently ruled such patents are legal. But the judicial winds have been shifting. The Supreme Court has never ruled on the legality of gene patents. And recently, the Supreme Court has grown increasingly skeptical of the Federal Circuit's patent-friendly jurisprudence. Meanwhile, a growing number of researchers, health care providers, and public interest groups have raised concerns about the harms of gene patents. The American Civil Liberties Union estimates that more than 40 percent of genes are now patented. Those patents have created "patent thickets" that make it difficult for scientists to do genetic research and commercialize their results. Monopolies on genetic testing have raised prices and reduced patient options.'"

Source: http://rss.slashdot.org/~r/Slashdot/slashdotScience/~3/nKcg0c5y_yA/story01.htm

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This is a 'critical time', Kerry tells China president amid North Korea tensions

Secretary of State John Kerry issued a stern warning Friday, telling Kim Jong Un North Korea will not be accepted as a nuclear power. NBC's Andrea Mitchell reports.

By Arshad Mohammed and Ben Blanchard, Reuters

BEIJING -- U.S. Secretary of State John Kerry met China's top leaders on Saturday in a bid to persuade them to exert pressure on North Korea to scale back its belligerent rhetoric and, eventually, return to nuclear talks.

Traveling to Beijing for the first time as secretary of state, Kerry made no secret of his desire to see China take a more activist stance toward North Korea, which in recent weeks has threatened nuclear war against the United States and South Korea.

As the North's main trading partner, financial backer and the closest thing it has to a diplomatic ally, China has a unique ability to use its leverage against the impoverished, isolated state, Kerry said in the South Korean capital, Seoul, on Friday before leaving for Beijing.

"Mr. President, this is obviously a critical time with some very challenging issues -- issues on the Korean Peninsula, the challenge of Iran and nuclear weapons, Syria and the Middle East, and economies around the world that are in need of a boost," Kerry told Chinese President Xi Jinping at the Great Hall of the People.

Kerry said after the meeting that his talks with Xi were "constructive and forward-leaning", though he did not elaborate.

China had a testy relationship with Kerry's predecessor, Hillary Clinton, believing her to be too abrasive in their disagreements over everything from human rights to territorial disputes like the South China Sea.

Pentagon intelligence has assessed that North Korea likely does have the ability to launch nuclear missiles, which raises the stakes for John Kerry, who just landed in South Korea, to find a diplomatic way out of the crisis. NBC's Andrea Mitchell reports.

"Clinton added fuel to the mistrust during her four-year term. We hope Kerry can pull it in the other direction," China's widely read and influential Global Times tabloid said in an editorial.

Kerry's visit to Asia, which will include a stop in Tokyo on Sunday, takes place after weeks of shrill North Korean threats of war since the imposition of new U.N. sanctions in response to its third nuclear test in February.

North Korea has repeatedly said it will not abandon nuclear weapons which it said on Friday were its "treasured" guarantor of security.

No sign of imminent missile launch
North Korean television on Saturday made no mention of Kerry's visit and devoted most of its reports to preparations for Monday's celebrations marking the birth date of state founder Kim Il-Sung.

These included a numerous floral tributes and grandiose flower show, foreign visitors seeing the sights of the capital ahead of the festivities and the unveiling of a monument in a provincial town.

But Rodong Sinmun, the ruling Workers' Party's newspaper, issued a fresh denunciation of joint U.S.-South Korean military exercises, saying: "The outbreak of nuclear war has now become a fait accompli, owing to the U.S. and the South Korean puppet forces.

"If the enemies dare provoke (North Korea) while going reckless, it will immediately blow them up with an annihilating strike with the use of powerful nuclear means."

However, South Korea's Yonhap news agency, quoting a government source, said North Korea had not moved any of its mobile missile launchers for the past two days after media reports that as many as five missiles had been moved into place on the country's east coast.

Yonhap said there had been no signs of any movement by the mobile launchers since Thursday "or that missile launches are imminent".

U.S. 'fanning the flames'?
Beijing has been reluctant to apply pressure on Pyongyang, fearing the instability that could result if the North were to implode and send floods of refugees into China, and has looked askance at U.S. military drills in South Korea.

North Korea is trending online and has been searched on Google more than ever before now that the country's outlandish threats have gotten the world's attention. Kim Jong-un is still expected to launch a missile, and some analysts predict they will then ask for money not to do it again. NBC's Richard Engel reports.

China's official Xinhua news agency said in a commentary that Washington had itself been "fanning the flames" on the Korean peninsula with its shows of force.

"It keeps sending more fighters, bombers and missile-defense ships to the waters of East Asia and carrying out massive military drills with Asian allies in a dramatic display of preemptive power," it said.

However, U.S. officials believe China's rhetoric on North Korea has begun to shift, pointing to a recent speech by China's Xi in which -- without referring explicitly to Pyongyang -- he said no country "should be allowed to throw a region and even the whole world into chaos for selfish gain".

Kerry told reporters in Seoul that if North Korea's 30-year-old leader went ahead with the launch of a medium-range missile, he would be making "a huge mistake."

At a news conference in Seoul on Friday and in a U.S.-South Korean joint statement issued on Saturday, Kerry signaled the U.S. preference for diplomacy to end the tension, but stressed North Korea must take "meaningful" steps on denuclearization.

The United States and its allies believe the North violated the a 2005 aid-for-denuclearization deal by conducting a nuclear test in 2006 and pursuing a uranium enrichment program that would give it a second path to a nuclear weapon in addition to its plutonium-based program.

David Guttenfelder / AP

As chief Asia photographer for the Associated Press, David Guttenfelder has had unprecedented access to communist North Korea. Here's a rare look at daily life in the secretive country.

Related:

John Kerry in Seoul: North Korea missile launch would be 'huge mistake'

Missile launch is North Korea's exit strategy, experts say

Google+ Hangout featuring NBC News correspondents in Seoul, Beijing and Tokyo

Full North Korea coverage from NBC News

Copyright 2013 Thomson Reuters. Click for restrictions.

Source: http://feeds.nbcnews.com/c/35002/f/653387/s/2aac6026/l/0Lworldnews0Bnbcnews0N0C0Inews0C20A130C0A40C130C177326150Ethis0Eis0Ea0Ecritical0Etime0Ekerry0Etells0Echina0Epresident0Eamid0Enorth0Ekorea0Etensions0Dlite/story01.htm

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Recommended: Adrenaline

Cover Image: April 2013 Scientific American MagazineSee Inside

Books and recommendations from Scientific American


Adrenaline, Brian B. Hoffman, fight-or-flight Image: Harvard University Press

Adrenaline
by Brian B. Hoffman
Harvard University Press, 2013 ($24.95)
The first hormone ever discovered, adrenaline is associated with terror, stress and excitement and is behind animals' fight-or-flight response. Hoffman, a professor of medicine at Harvard Medical School, explores the cultural significance of adrenaline and its history. The stories include those of a murderous nurse who used the untraceable hormone to induce fatal heart attacks in her patients, industrial chemists' race to purify adrenaline for drug use and the myth of the chemical's power to raise the dead.

SCIENTIFIC AMERICAN ONLINE
For more recommendations, go to ScientificAmerican.com/apr2013/recommended

This article was originally published with the title Recommended: Adrenaline.

Source: http://rss.sciam.com/click.phdo?i=82e30144bbc0e5ad7330a4ad14a30d9e

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রবিবার, ১৪ এপ্রিল, ২০১৩

Finally A Robot Will Help You Build IKEA Furniture

The real thing that's frustrating about building IKEA furniture isn't the little screws or the instructions. It's the person who's helping you. They misunderstand directions, hum Rihanna songs and kick the last dowel under the refrigerator by accident. And you can't say anything because they're doing you a favor. More »
    


Source: http://feeds.gawker.com/~r/gizmodo/full/~3/LFmGpcMViHM/finally-a-robot-will-help-you-build-ikea-furniture

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IMF recognizes Somali government, offers economic advice

WASHINGTON (Reuters) - The International Monetary Fund officially recognized the Somali government on Friday, ending a 22-year hiatus and allowing the Fund to provide economic policy advice to Somalia.

The move opens the way for donors and other development banks to resume relations with Somalia, whose economy is in tatters after more than two decades of conflict.

Donors are expected to meet officials from the World Bank and International Monetary Fund during meetings of world finance leaders in Washington next week.

"The decision is consistent with broad international support and recognition of the federal government," the IMF said in a statement. The IMF said, however, that it will not be able to approve lending to Somalia until the government clears $352 million in debt it owes to the IMF.

The United States has said it will work with the World Bank and the IMF to help Somalia clear the debt. The country also owes the World Bank about $250 million, which is preventing the institution from providing development aid to the government.

Major Western donors, including the United States, Britain and countries in Europe, have slowly been re-engaging with the Mogadishu government since the election of President Hassan Sheikh Mohamud last year. It was the first vote of its kind since warlords toppled military dictator Mohamed Siad Barre in 1991.

In subsequent years, al Qaeda-linked al Shabaab insurgents seized control of large swathes of the south and central parts of the country. An African Union force has had some success in driving the insurgents out of the capital.

Source: http://news.yahoo.com/imf-recognizes-somali-government-offer-economic-advice-082509415--finance.html

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শনিবার, ১৩ এপ্রিল, ২০১৩

U.S. again declines to name China currency manipulator

When 79-year-old Evie Branan suffered a massive stroke six years ago, it left her in a semicomatose state. Branan was unable to eat, speak, or move on her own, and she became a resident of Willowbrook Manor, a long-term care facility in Flint, Michigan. With the help of her family and the caregivers at Willowbrook, [...]

Source: http://news.yahoo.com/u-again-declines-name-china-currency-manipulator-203220451--business.html

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বুধবার, ১০ এপ্রিল, ২০১৩

Summer-Like Weather Heats Up Sales At Local Clothing Stores

By Suzanne Monaghan

PHILADELPHIA (CBS) ? Some fashion industry experts are reporting a slow start to spring sales, but the turn in the weather is turning things around for some shops in Philadelphia.

Spring seemed to be on break this March, so refreshing the warm weather wardrobe wasn?t on the minds of many. But the temperatures will be more like summer for part of this week, which means hot sales for clothing stores.

Kate was out doing some shopping to put some spring in her step.

?Sandals (laughs). Get out of those winter boots and socks and big shoes.?

Abbey Kessler is co-owner of Smak Parlour in Old City. She says her spring line sold well throughout March, because customers chose to pair items with leggings and cardigans.

?We?ve been selling a ton of polka-dots, halter tops, flower prints denim little tie shirts ? anything summery has been flying off the racks.?

Kessler says April and May are typically her busiest spring sales months.

?Sales have actually started to pick up,? says Heather Schwartz at Charlie?s Jeans. ?It?s been really steady. People are coming in to do their spring shopping in terms of denim.?

She expects the warm weather this week to heat up sales even more.

?Our dresses are just kind of flying through. Everyone is coming in and seeing them on the mannequins and wanting dresses ? a lot of dresses.?

Source: http://philadelphia.cbslocal.com/2013/04/09/summer-like-weather-heats-up-sales-at-local-clothing-stores/

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Bloomberg Develops Gun Scorecard; OFA Gets Cyber-Squatted; Pat Miletich, Liz Cheney for Senate?

Click hereto read online and see our archives.

WHAT'S NEWS

  • NYC Mayor Michael Bloomberg (I) "is ratcheting up pressure on lawmakers by launching a new system to grade them based on their votes and statements on gun issues" (Washington Post)
  • "An arbitrator has denied" Organizing for Action's "effort to obtain the domain name organizingforaction.net, registered by a quick-moving computer technician in Castle Rock, Colo., on Jan. 18, when the news broke that Obama's former advisors were launching the group" (Los Angeles Times). Pres. Obama himself "will appear at a cozy reception for fewer than 65 guests with tickets priced at $32,400 per couple at the Manhattan home of movie mogul Harvey Weinstein and his designer wife Georgina Chapman on May 13" (New York Post)
  • NJ GOV '13: "One New Jersey," a group "formed to push back" on Gov. Chris Christie?s (R) record, "is launching a $500,000 cable ad buy in the state" today (Politico)
  • Boston Mayor '13: City Councilor Felix Arroyo "is expected to launch a bid" today, "making him the first Latino candidate to run for the office" and "the sixth major candidate" in the race (Boston Globe)
  • IA SEN: Mixed martial artist/ESPN commentator/ex-UFC champion Pat Miletich (R) "says he is considering a bid," but "said it was possible he could run as an independent." He "tweeted last week that people could pencil his name in next year for Senate, adding 'Bruce Braley cannot win that seat.'" (Quad City Times)
  • KY SEN: Senate Min. Leader Mitch McConnell (R) raised $1.8M in the 1stQ and has $8.6M CoH (AP)
  • LA SEN: Ex-Rep. Jeff Landry (R) said the launch of his super PAC "doesn?t necessarily close other doors for his political future. But he emphasized that the super PAC is a long-term project, which most likely lowers the odds of a challenge" to Sen. Mary Landrieu (D) (Politico)
  • MA SEN: Reps. Ed Markey (D) and Stephen Lynch (D) "sparred on drone strikes, student debt, health care and campaign spending during a debate Monday" (AP). Meanwhile, state Rep. Dan Winslow (R) filed a request with the FEC Monday "for guidance on whether his campaign can accept contributions from same-sex married couples as they are allowed to for straight couples" (Time)
  • WY SEN: Dick Cheney daughter Liz Cheney (R) "is still seriously considering running," although over the weekend, Sen. Mike Enzi (R) "told a meeting of the GOP state party committee that he is looking forward to running for re-election" (Daily Caller)
  • ME GOV: '10 candidate Eliot Cutler (I) "is headed to D.C. in May to raise money from a pretty ritzy list" of DC lobbyists. The invitation "lists about 20 former Carter Administration officials, lobbyists and Democratic Party and campaign officials as 'hosts.'" (Bangor Daily News)
  • NM GOV: Gov. Susana Martinez (R) "has stockpiled" nearly $1.5M for her re-election campaign, "far more" than AG Gary King (D), who has $103K CoH (AP)
  • PA GOV: Rep. Allyson Schwartz (D) "launched her campaign" Monday, declaring that Gov. Tom Corbett's (R) "failed leadership" has crippled the PA economy. "Her staff said that $3.1 million in her congressional campaign account would be transferred" to her GOV campaign cmte (Philadelphia Inquirer).
  • WH '16: Ex-Sen. Rick Santorum (R-PA) "will speak at the 13th Annual Spring Kick Off of the Iowa Faith & Freedom Coalition" April 15 in Urbandale, IA. His "remarks will focus on the future of the Republican Party and what must be done to ensure our party's future viability" (Sioux City Journal)

NUMBER BRUNCHING

  • According to a new CNN/ORC Int'l poll of nat'l adults, conducted 4/5-7, 51% approve of the way Obama is handling his job as POTUS, while 47% disapprove. In the previous poll, conducted 3/15-17, 47% approved of Obama, and 50% disapproved (release).

OUR CALL

Hotline editors weigh in on the stories that drive the day


? Schwartz's decision to jump into the PA GOV race emphasizes just how vulnerable Democrats think Gov. Tom Corbett is. A favorite of leadership, Schwartz has seen her power grow in the House Democratic Caucus, but she's giving up her increasingly prominent role in DC for a shot at the Governor's Mansion, even though she could face multiple credible foes in the Democratic primary.

? With Dems desperate to avoid a primary in SD, it appears Brendan Johnson's supporters have determined it's more important to claim frontrunner status (and potentially head off former Rep. Stephanie Herseth Sandlin) than to avoid charges of political nepotism. Nearly all of the state's Dem leaders have been approached by the "Draft Brendan" campaign, and the rapid gathering of support suggests the movement has been in the works for some time. If Herseth Sandlin is serious about a bid, she doesn't have long to make her own show of strength.

? The looming CO-06 battle between Rep. Mike Coffman (R) and Andrew Romanoff (D) looks like an early front-runner to be 2014's most expensive congressional race. It has plenty of key ingredients so far: a closely divided electorate, a big media market, a state with plenty of up-ballot activity, and, most importantly, two seasoned candidates who are both fundraising like incumbents, with each bringing in over $500,000 in the first quarter of 2013.

HAIR OF THE DOG

FRESH BREWED BUZZ

  • Sen. Tim Johnson (D-SD) "became the latest prominent Democrat to declare his support Monday for same-sex marriage," leaving "only three of 53 Democrats in the Senate" who do not: Sens. Mary Landrieu (D-LA), Mark Pryor (D-AR), and Joe Manchin (D-WV) (Sioux Falls Argus Leader)
  • "Right now I?m grateful to live in a city, in a state, in a country where I strongly support my mayor, my governor and my president and my senators and my representative. If at some point that weren?t true and I thought I could make a meaningful and measurably greater impact, you know, I?d have to ask and answer that question." -- Chelsea Clinton, on possibly running for office (New York Daily News)
  • "The Emanuel brothers -- Ari, Rahm and Zeke -- crack Town & Country?s new list of America?s most powerful families ranking ahead of the Kennedys, McCains and Pritzkers. (The trio sits at No. 4 while the Bush family?s perched on top.)" (New York Post)
  • "If she were here today, she would have read 'Fifty Shades of Grey.'" -- Susan Ford Bales, on her mother/ex-FLOTUS Betty Ford (Grand Rapids Press)
  • "With the Alaska GOP set to meet Monday evening to decide the fate of party chairwoman Debbie Brown of Kasilof, she has seized the Republican headquarters in Anchorage and is threatening to arrest anyone who tries to enter the building" (Alaska Dispatch)
  • "I think you?ll see, hopefully, a chastened Supreme Court is not going to make the same mistake in the (current same-sex marriage) cases as they did in Roe v. Wade" -- Ex-Sen. Rick Santorum (R-PA) (Des Moines Register)
  • Ex-Rep. Merrill Cook (R-UT) "will participate in a mock hearing with several other former Congress members to explore the subject of UFOs. Cook says he skeptical, but open minded" (Salt Lake Tribune)
  • "Candidate says Haitian Vodou being used to get her to drop out of North Miami mayoral race" (Miami Herald)
  • "Bob Seger fan, 79, ready to see rocker after awakening from five-year coma" (Flint Journal)
  • "I'm going to go there just like I went to Calcutta and Japan ... to sense the dynamism. They're building stuff, 5,000 miles of high-speed rail, and 100 years ago the British were feeding them opium." -- CA Gov. Jerry Brown (D), who left CA for China on Monday, talking recently to the Financial Times of London (Sacramento Bee)
  • "TaB turns 50 and those who love the fizzy diet cola celebrate" (Lexington Herald-Leader)

SWIZZLE CHALLENGE

  • Zachary Taylor and Franklin Pierce are the two generals that served in the Mexican-American War and later became President.
  • The winner is Sam Kaplan , and here's his Swizzle Challenge: "Which Presidents of the United States were generals in the Civil War?" The 3rd correct e-mailer gets to submit the next question.

NJ'S EARLY BIRD SPECIALS

SHOT...

"I don't want to pay for a sex change operation. I'm not interested. I like being a boy." -- GA SEN candidate/Rep. Paul Broun (R-GA) (Barrow County Times)

...CHASER

"I Enjoy Being a Girl" -- Flower Drum Song, Rodgers & Hammerstein

Sarah Mimms, Editor
Quinn McCord, Guest Editor

Source: http://news.yahoo.com/bloomberg-develops-gun-scorecard-ofa-gets-cyber-squatted-090038631--politics.html

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শুক্রবার, ৫ এপ্রিল, ২০১৩

Leadership ? 7th in A Series - The Burghard Group | Strengthening ...

Leadership ? 7th in A Series

We all like to believe that we are effective leaders and given the opportunity can step up to take on an even greater leadership role in our respective Organizations. But, the hallmark of a great leader is that his/her followers readily recognize them as such.

Unfortunately, we are not always the most objective when it comes to self-assessment. Sometimes we are too hard on ourselves, and sometimes we seem to live in a fantasyland that only exists in our mind.

The problem with self-assessment is that absent objectivity you get a false sense of reality that either blinds you to your opportunities for improvement or sets you on a path to fix something that isn?t broken.

A decent paper on biases in self-assessment is entitled ?Objectivity in the Eye of the Beholder: Divergent Perceptions of Bias in Self Versus Others?. It is a scholarly piece that basically concludes we are not our most reliable evaluator. Consequently, it is often helpful to solicit the perspective of others regarding your personal performance.

Here are links to the other posts in my leadership series.

1st in a series

2nd in a series

3rd in a series

4th in a series

5th in a series

6th in a series

Leadership7

To help make the task a little easier, I am providing you with a Leadership Assessment Tool that will help you grade your leadership skills as seen through the eyes of others.

The tool is something I have used to get a better handle on my own development opportunities. It is a practical way to get the feedback you need to improve as a leader. Key to getting an objective look is to ask for feedback from the right people. You need to ask people that have been in a position to personally observe your leadership behaviors. This typically means soliciting input from team members and managers in your reporting line.

I have found that anonymity is a great way to enhance objectivity. When I have used this assessment tool, I?ve deployed it as an online survey (I use SurveyMonkey). That way, it is easy for people to complete the information and the data can remain blinded. It also makes it easy to deploy the tool quickly following completion of a project that you led so the observations are fresh in people?s minds.

Click on the following link for a PDF copy of the Tool.

Personal Leadership Assessment Tool

The Leadership Assessment Tool will get you the feedback to assess your leadership behaviors. You can assign a letter grade to the score if you like, and track your progress over time by periodically (e.g. once a year) reassessing your performance.

But, the Tool alone will not ensure you become a better leader. You need to internalize the feedback and actually do something about it to improve.

I find many people start the process with great intentions, and stop after they define their opportunities for improvement. But, success comes from creating and implementing a personal skill improvement plan. You need to create new and improved behaviors. More often than not, that means you will need to change what you are doing. This requires an active learning approach. Just being aware of your opportunities is not sufficient. When you are under pressure, you will simply repeat the behaviors that feel natural to you if you?ve not invested the time to learn new leadership skills.

Give the Leadership Assessment Tool a try. See how others view you as a leader and put together a personal skill development plan to improve in your areas of greatest need.

I?d love to hear about your experience with the Tool. And, if you have used a similar Tool in the past, I?d love to hear your tips on how to get the most reliable feedback.

Please take the time to leave a comment.

American Dream Case Study Series

Indiana versus Michigan

Florida versus North Carolina

New York versus New Jersey

California versus Texas

Pennsylvania versus New York

How Easy Is It To Achieve The American Dream In Your State?

To view the complete set of State rankings based on the ADCI and five explanatory sub-indexes, simply click this button

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?

Source: http://strengtheningbrandamerica.com/blog/2013/04/leadership-7th-in-a-series/

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My defensiveness is destroying my family - Christian Home and Family

defensiveness

It was a sadly typical scene.

Like many times before, she picked up on a critical, negative attitude I had toward one of the children, and she was boldly kind enough to talk to me about it.

I immediately began defending myself.

  • I built a case to justify my behavior.
  • I tried to convince her that she was seeing the situation all wrong.
  • I accused her of being over-sensitive when it came to the kids (which is a terrible thing to say to a mother).
  • I tried to turn it into an issue of ?perceptions? instead of addressing the actual concerns she had.
  • I tried to point out inconsistencies I saw in her reasoning (diversionary tactics).

And two hours later we sat on opposite ends of the bed looking at each other?

distant,

disunified,

discouraged,

and stuck.

And it was all because of my defensiveness.

Defensiveness is as old as time and a very natural human reaction

Defensiveness was the first reaction Adam had when God asked him about what had gone wrong in the garden (Genesis 3:12).

It was Cain?s first response when asked about his ?missing brother? (Genesis 4:9).

The Proverbs warn about defensiveness (Proverbs 28:26).

It?s almost as old as time, and seems to be one of Satan?s favorite tools.

And it?s been my most common reaction to criticism I?ve received from my wife, for almost 24 years of marriage.

And I hate it.

Defensiveness has been a pain in the side of my marriage for a very long time.

I don?t think my wife has a defensive bone in her body.

The problem with defensiveness in our marriage is and always has been with me.

Any time she talks to me about:

  • How I relate to people,
  • How I?m meeting/not meeting her needs,
  • How I?m relating to the children,
  • How my tone of voice and body language impacts people,
  • Something I wrote on this blog,
  • Something I recorded on the podcast,

I almost immediately get defensive.

And it?s a very shameful, destructive, unbecoming thing that will destroy my family? unless I do something about it.

What defensiveness does?

  • It stops healthy communication almost immediately,
  • It causes my wife and kids to become fearful of how I?m going to respond,
  • It camoflages my insecurities behind inappropriate self-defined labels,
  • It throws the unity my marriage relationship into a tailspin, which is not always easy to recover from,
  • It blocks me from much-needed changes I need to make, in attitude and behavior,
  • It puts a distance between me and my kids? which is the opposite of what I really want,
  • It frustrates my wife to no end.

Does? any of that sound familiar?

Overcoming defensiveness

I?m on the very front-end of this journey into killing defensiveness.

But the marriage-long struggle has forced me to take a long, introspective look into my own soul so that the destructive cycle of defensiveness doesn?t continue to knock us for a loop.

?I have discovered a few things that are beginning to make a difference.

#1: Admit that my initial response is often defensive ? Like any other wrong that needs to be righted, if I can?t admit it exists, I?m unable to do anything about it.

#2: Admit that my defensiveness is destructive, and sinful ? This is calling it what it is? seeing it from God?s perspective. When I can admit what HE thinks about it, then I?m in a place where true grief over my sin can begin to do it?s very good work (2 Corinthians 7:10).

#3: Get humble ? Defensiveness is ultimately born out of pride, so the antidote is not to try harder or make resolutions (not yet, anyway). The cure is in humility, Christ-like humility (Philippians 2:3-5). It?s only then that I have any hope of receiving God?s help (James 4:6).

#4: Plead for God?s help ? I can?t change my defensiveness all on my own. I know, I?ve tried. If change for the better is going to happen, I am going to have to have His help to accomplish it.

#5: Make a plan in keeping with my repentance & put it to work - Jesus told the Pharisees to prove their genuineness by doing actions that were consistent with their words (Matthew 3:8). It?s not enough for me to say ?sorry? and move on. Something has to change, or else I?m not truly repentant.

And this is the danger-spot?

I could move ahead full steam, full of great intentions, devoid of any power but my own? which won?t get me very far.

I will have to abide in Him (John 15:5) and rely on His strength to help me overcome the destructive response-habits of defensiveness that I?ve built? because they are:

  • very deeply rooted,
  • almost invisible to me,
  • things that come naturally (no matter how wrong),
  • comfortable, and therefore seem ?right,?

and are therefore impossible for me to find, attack, and destroy on my own.

I know, because I?ve tried to do that for the past 24 years? and the defensiveness is still here, bringing devastation every time it arises.

I?m trusting the LORD to help me kill defensiveness in my own soul.

Will you join me? Let me know how this post speaks to you and what plans you?re making to kill it ? use the comments below?

SUBSCRIBE TO CHRISTIAN HOME AND FAMILY

About Carey Green

radical follower of Christ, husband, dad, writer, blogger, podcaster, marriage & family coach, counselor, speaker, retiring Pastor, and all around good guy (because of Christ). Connect with Carey on Google+

Source: http://www.christianhomeandfamily.com/defensiveness-destroys/

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Dead star warps light of companion red star, astronomers say

Apr. 5, 2013 ? NASA's Kepler space telescope, in concert with Cornell-led measurements of stars' ultraviolet activity, has observed the effects of a dead star bending the light of its companion red star.

The findings are among the first detections of this effect -- a result predicted by Einstein's theory of general relativity -- in binary, or double, star systems.

The dead star, also called a white dwarf, is the burnt-out core of what used to be a star like our sun. It is locked in an orbiting dance with its partner, a small "red dwarf" star. While the tiny white dwarf is physically smaller than the red dwarf, it is more massive. When the white dwarf passed in front of its star, its gravity caused the starlight to observably bend and brighten.

"This white dwarf is about the size of Earth but the mass of the sun," said Phil Muirhead, Ph.D. '11, of the California Institute of Technology and lead author of the findings to be published April 20 in the Astrophysical Journal, titled "Characterizing the cool KOIs: A mutually eclipsing post-common envelope binary."

"It's so hefty that the red dwarf, though larger in physical size, is circling around the white dwarf," Muirhead continued.

The research team used Cornell-led ultraviolet measurements of the star called (Kepler Object of Interest) KOI-256 taken by the Galaxy Evolution Explorer (GALEX), a NASA space telescope operated by Caltech. The GALEX observations were conducted by Cornell researchers Jamie Lloyd, associate professor of astronomy and of mechanical and aerospace engineering; Kevin Covey, former postdoctoral associate now at Lowell Observatory; and Lucianne Walkowicz of Princeton University and Evgenya Shkolnik of Lowell Observatory.

Still in early phases and for which Cornell students are now being recruited by Lloyd, the GALEX program measures ultraviolet activity in all the stars in the Kepler field of view -- an indicator of potential habitability for planets.

Graduate student and co-author Jim Fuller also did a theoretical analysis of the star system in the context of its future and past evolutions.

The red dwarf orbits the white dwarf in just 1.4 days. This orbital period is so short that the stars must have previously undergone a "common-envelope" phase in which the red dwarf orbited within the outer layers of the star that formed the white dwarf, Fuller explained.

Moreover, the short orbital period means the red dwarf's days are numbered: In a few billion years, the intense gravity of the white dwarf will strip material off the red dwarf, forming a hot accretion disk of in-falling material around the white dwarf.

"This system is especially exciting because it allows us to accurately characterize the peaceful state of these systems before the violent mass-transfer phase begins," Fuller said.

Kepler's primary job is to scan stars in search of orbiting planets. As the planets pass by, they block the starlight by miniscule amounts, which Kepler's sensitive detectors can see.

So far, Kepler has identified more than 2,700 planet candidates. Still ongoing is the mission's search for planets similar to Earth in size and temperature that orbit a star like our sun. Ultimately, Kepler will reveal how common Earth-size planets are in the Milky Way galaxy.

To learn more about this particular star system, Muirhead and colleagues also used the Hale Telescope at Palomar Observatory near San Diego. Using a technique called radial velocity, they discovered that the red dwarf was wobbling around like a spinning top. The wobble was too big to be from the tug of a planet. That's when they knew they were looking at a massive white dwarf passing behind the red dwarf, rather than a gas giant passing in front.

One of the consequences of Einstein's theory of general relativity is that gravity bends light. Astronomers regularly observe this phenomenon, often called gravitational lensing, which has been used to discover new planets and hunt for free-floating planets.

In this new study, scientists used gravitational lensing to determine the mass of the white dwarf. By combining this information with all the data they acquired, they were able to accurately measure the mass of the red dwarf and the physical sizes of both stars.

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Story Source:

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

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


Journal Reference:

  1. Philip S. Muirhead, Andrew Vanderburg, Avi Shporer, Juliette Becker, Jonathan J. Swift, James P. Lloyd, Jim Fuller, Ming Zhao, Sasha Hinkley, J. Sebastian Pineda, Michael Bottom, Andrew W. Howard, Kaspar von Braun, Tabetha S. Boyajian, Nicholas Law, Christoph Baranec, Reed Riddle, A. N. Ramaprakash, Shriharsh P. Tendulkar, Khanh Bui, Mahesh Burse, Pravin Chordia, Hillol Das, Richard Dekany, Sujit Punnadi, John Asher Johnson. CHARACTERIZING THE COOL KOIs. V. KOI-256: A MUTUALLY ECLIPSING POST-COMMON ENVELOPE BINARY. The Astrophysical Journal, 2013; 767 (2): 111 DOI: 10.1088/0004-637X/767/2/111

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/uEUbZayfGuE/130405094732.htm

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Google Launches Drive App Data Folders, Lets Developers Safely Store Configuration Files And Other Data

8371218391_9b6af76a2d_zIf you’re a developer building web or mobile apps that use Google Drive for storing information, you’ve probably found that users really can’t be trusted not to delete or move that data. Once the user does that, the app experience won’t be so great and the data that the app needs to run isn’t there to use. Today, Google has introduced “app data folders” which are protected and can’t be seen by users within their Drive account. Other apps can’t see the files either, so there is now an added layer of security to fight off bad actors who build apps to swipe information or do other damage. The Google Drive team suggests that these app data folders are used for configuration files, app state data or files that shouldn’t be modified in any way. Even though users can’t see the data, they can see how much space it is taking up on their devices and clear the data at any time. Here’s what you’ll see as a user in your manage apps panel: Additionally, “custom properties” can be added to Drive files that will allow developers to create searchable fields that are either app-specific or are to be shared with other apps. More information about the Drive SDK can be found on StackOverflow, a site oddly not owned or operated by Google. [Photo credit: Flickr]

Source: http://feedproxy.google.com/~r/Techcrunch/~3/KvbykiZ615w/

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বৃহস্পতিবার, ৪ এপ্রিল, ২০১৩

Study finds ionic thrusters generate efficient propulsion in air

Thursday, April 4, 2013

When a current passes between two electrodes ? one thinner than the other ? it creates a wind in the air between. If enough voltage is applied, the resulting wind can produce a thrust without the help of motors or fuel.

This phenomenon, called electrohydrodynamic thrust ? or, more colloquially, "ionic wind" ? was first identified in the 1960s. Since then, ionic wind has largely been limited to science-fair projects and basement experiments; hobbyists have posted hundreds of how-to videos on building "ionocrafts" ? lightweight vehicles made of balsa wood, aluminum foil and wire ? that lift off and hover with increased voltage.

Despite this wealth of hobbyist information, there have been few rigorous studies of ionic wind as a viable propulsion system. Some researchers have theorized that ionic thrusters, if used as jet propulsion, would be extremely inefficient, requiring massive amounts of electricity to produce enough thrust to propel a vehicle.

Now researchers at MIT have run their own experiments and found that ionic thrusters may be a far more efficient source of propulsion than conventional jet engines. In their experiments, they found that ionic wind produces 110 newtons of thrust per kilowatt, compared with a jet engine's 2 newtons per kilowatt. The team has published its results in the Proceedings of the Royal Society.

Steven Barrett, an assistant professor of aeronautics and astronautics at MIT, envisions that ionic wind may be used as a propulsion system for small, lightweight aircraft. In addition to their relatively high efficiency, ionic thrusters are silent, and invisible in infrared, as they give off no heat ? ideal traits, he says, for a surveillance vehicle.

"You could imagine all sorts of military or security benefits to having a silent propulsion system with no infrared signature," says Barrett, who co-authored the paper with graduate student Kento Masuyama.

Shooting the gap

A basic ionic thruster consists of three parts: a very thin copper electrode, called an emitter; a thicker tube of aluminum, known as a collector; and the air gap in between. A lightweight frame typically supports the wires, which connect to an electrical power source. As voltage is applied, the field gradient strips away electrons from nearby air molecules. These newly ionized molecules are strongly repelled by the corona wire, and strongly attracted to the collector. As this cloud of ions moves toward the collector, it collides with surrounding neutral air molecules, pushing them along and creating a wind, or thrust.

To measure an ion thruster's efficiency, Barrett and Masuyama built a similarly simple setup, and hung the contraption under a suspended digital scale. They applied tens of thousands of volts, creating enough current draw to power an incandescent light bulb. They altered the distance between the electrodes, and recorded the thrust as the device lifted off the ground. Barrett says that the device was most efficient at producing lower thrust ? a desirable, albeit counterintuitive, result.

"It's kind of surprising, but if you have a high-velocity jet, you leave in your wake a load of wasted kinetic energy," Barrett explains. "So you want as low-velocity a jet as you can, while still producing enough thrust." He adds that an ionic wind is a good way to produce a low-velocity jet over a large area.

Getting to liftoff

Barrett acknowledges that there is one big obstacle to ionic wind propulsion: thrust density, or the amount of thrust produced per given area. Ionic thrusters depend on the wind produced between electrodes; the larger the space between electrodes, the stronger the thrust produced. That means lifting a small aircraft and its electrical power supply would require a very large air gap. Barrett envisions that electrodynamic thrusters for aircraft ? if they worked ? would encompass the entire vehicle.

Another drawback is the voltage needed to get a vehicle off the ground: Small, lightweight balsa models require several kilovolts. Barrett estimates a small craft, with onboard instrumentation and a power supply, would need hundreds or thousands of kilovolts.

"The voltages could get enormous," Barrett says. "But I think that's a challenge that's probably solvable." For example, he says power might be supplied by lightweight solar panels or fuel cells. Barrett says ionic thrusters might also prove useful in quieter cooling systems for laptops.

"Efficiency is probably the number one thing overall that drives aircraft design," Barrett says."[Ionic thrusters] are viable insofar as they are efficient. There are still unanswered questions, but because they seem so efficient, it's definitely worth investigating further."

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Massachusetts Institute of Technology: http://web.mit.edu/newsoffice

Thanks to Massachusetts Institute of Technology for this article.

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Source: http://www.labspaces.net/127587/Study_finds_ionic_thrusters_generate_efficient_propulsion_in_air

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