বৃহস্পতিবার, ১১ এপ্রিল, ২০১৩

Build a better internship program this summer ? Business ...

If you hire interns, make 2013 the year you ramp up your summer program. Start viewing your internships from a workforce development perspective, and you will find that they benefit your organization?s recruitment, community involvement and diversity efforts.

Hiring students and recent college grads for a summer stint can generate interest in your field, your company and its technical specialties. It also can help stem a growing youth unemployment problem.

The slow rebound from the Great Recession has been particularly hard on young workers, leaving millions unemployed and underemployed largely because they don?t have the skills to qualify for scarce jobs. At the same time, one in three employers worldwide reports having trouble finding qualified employees. Well-designed internship programs?often run in concert with local nonprofits and workforce development agencies?can help solve both problems.

Siemens USA?s summer program...(register to read more)

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Source: http://www.businessmanagementdaily.com/34697/build-a-better-internship-program-this-summer

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Electronic implants: New fast transcutaneous non-invasive battery recharger and energy feeder

Apr. 9, 2013 ? Ant?nio Abreu, a Sustainable Energy Systems PhD Student under the MIT Portugal Program, currently developing research work at LNEG (Laborat?rio Nacional de Energia e Geologia I.P.) has developed a non-invasive battery recharger system for electronic implants that allows a longer life for the internal implantable devices in the human body such as, pacemakers, defibrillators, electric heart, delaying considerable the usual customary surgery intervention for replacement.

According to the world health organization, cardiovascular diseases are the leading cause of deaths. On a last resource, patients with cardiovascular disease have to be aided through surgery and medical devices to help them perform the basic functions. Nevertheless medical devices, such as pacemaker that sends electrical impulses to the heart muscle to maintain a suitable heart rate and rhythm, need a source of energy and once the battery has run out they required a surgical procedure similar to the initial implantation to replace the device.

With the non-invasive battery recharger for electronic cardiac implants the need for a new surgical intervention is reduced, since it primes from being rechargeable, i.e. the patient will not need to be operated upon to change batteries every five to seven years, since these are rechargeable by irradiant electricity passing through the body. Ant?nio Abreu adds that "The non-invasive battery also allows for a customize energy consumption of the cardiac implants, therefore the consumption of energy can be regulated to adapted to its function and patients' pathology and activity. It guarantees the energetic supply of a communication channel between the exterior for diagnosis and/or implant reprogramming. In this case, there will be no demand of energy from the internal battery."

The principle of the operation is the use of a high efficient Transcutaneous Power System. However, these typical systems use electronic converters witch generate hazard electromagnetic interferences (EMI) that causes damage to the implants as to the patients. The present innovation takes into account the Energy Efficiency in electric transmission systems without ferromagnetic cores, regarding medical application. In practice it eliminates the Gibbs phenomena.

The invention optimizes the energy flow determined by the regime of exploration previewed at the innovative Predictor-Corrector Abacus conception.

The Predictor-Corrector Abacus is a representation in the complex plan of a situation where a specific load is supplied by an electrical energy to the Active Power P, and Reactive Power Q. What characterizes this Abacus is the circumstance of considering the effect of the reactance and the resistance of longitudinal transmission lines that is evident at the figure by the position of the angles of segments lines that proliferate in the first and second quadrants of the Argand's complex plan. The best position of the segments lines defines the maximum of power transference without electromagnetic interferences.

The Prototype, patented by Ant?nio Abreu in the USA and in Europe with the collaboration and support of the PRIME (Incentive Program for the Modernization of the Economy) program and approved by the European Commission, was initially designed for pacemakers application but currently, and according to the medical development, new improved technics were made to be suitable for high power (and high voltages too) devices, such defibrillators, electric heart, insulin pumps or other type of implantable prosthesis.

Moreover, the same principle that allows the supply of lower energy voltages can be applied to improve the high power electrical transmission and distribution systems (electrical grid) to reduce costs due the consumer electric consumption, according to the results obtained.

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The above story is reprinted from materials provided by MIT Portugal Program.

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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/matter_energy/electronics/~3/howWyuk3dac/130409131804.htm

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Eco-change triggers rapid evolution

Changes to their surroundings can trigger "rapid evolution" in species as they adopt traits to help them survive in the new conditions, a study shows.

Studying soil mites in a laboratory, researchers found that the invertebrates' age of maturity almost doubled in just 20-or-so generations.

It had been assumed that evolutionary change only occurred over a much longer timescale.

The findings have been published in the journal Ecology Letters.

"What this study shows for the first time is that evolution and ecology go hand-in-hand," explained co-author Tim Benton, professor of population ecology at the University of Leeds, UK.

"The implicit assumption has always been, from Darwin onwards, that evolution works on long timescale and ecology works on short timescales.

"The thinking was that if you squash a population or you change the environment then nothing will happen from an evolutionary point-of-view for generations and generations, for centuries."

Running wild

Prof Benton said that the soil mites experiment was set up to help shed light on whether the change in the size of harvested fish species, such as North Atlantic cod, was a result of an evolutionary change.

"The advantage of what we have done is that we have got free-running populations of organisms that do their own thing," he told BBC News.

"You cannot do those sort of experiment with large organisms that live in the wild."

The team sourced soil mites from four UK locations and housed them in 18 tests tubes in a laboratory.

"Some of the populations were harvested, as per a fisheries management approach; juveniles were harvested from some tubes, adults from others, and other tubes we just left alone," Prof Benton explained.

"Then we just looked to see what happened to their genetics, their life history and their population dynamics.

"We were all rather surprised to see how quickly they evolved in ways that you would not necessarily would have thought possible.

"The key result is that over the 20-or-so generations, their age of maturity almost doubled - that is an evolutionary effect."

"That means that if the population is squashed for any reason then the population take longer to grow back and so you have all sorts of longer term consequences, it is not just a matter of what is happening to their life histories."

Prof Benton said that the findings also showed that people involved in population management schemes, such as conserving endangered species etc, would have to take into account evolutionary factors, as well as ecological ones, as the result of environmental change.

He said: "For example, if you think about the challenges of climate change and nature reserves, where do you put the reserves?

"The way that animals move across the landscape, their dispersal behaviour is likely to evolve as a result of climate change.

"Do you put the nature reserves just 10 miles apart because that is how far the animals travel now, but in 50 years time, they might disperse five miles."

Prof Benton added that evolutionary change added an additional pressure to population management schemes, namely that it was much more difficult to reverse than ecological change.

"Once you have lost the genes and the species has evolve into something different then it is very difficult to go back to what they were before."

Source: http://www.bbc.co.uk/news/science-environment-22039872#sa-ns_mchannel=rss&ns_source=PublicRSS20-sa

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3D-Textured Solar Cells Will Be Tested in Space

An experimental 3D-textured solar cell is set to be bolted to the outside of the International Space Station (ISS), where it will experience 16 "sunrises" each day as part of a harsh performance test.

A proposal submitted by W. Jud Ready, a professor of materials science at Georgia Tech, to study the performance of his "3D" textured solar cell in space was recently accepted by the Center for the Advancement of Science in Space (CASIS), the organization that manages research onboard the ISS. His solar cell, made from carbon nanotubes coated in an experimental light-absorbing material, will hitch a ride to the ISS sometime next year.

"It will be placed out on what they euphemistically call the back porch of the Japanese Experiment Module...It plugs into, literally, a USB port," Ready said.

[Scientists 'Evolve' a Super-Efficient Solar Cell]

The ISS has served as an orbiting laboratory for scientists, academics and even schoolchildren for years, but typically, the experiments are performed inside the space station. The installation of the solar panels will be one of the first experiments to take place outside the space station, on the Nanoracks External Platform.

As the ISS orbits the Earth every one and a half hours, the panels will be hit by sunlight from all directions, giving Ready and the team a way to test multiple configurations very quickly.

"If you were to go through all the possible configurations on Earth, it would be very challenging," Ready said.

The team will be testing the cells, coated with a copper-zinc-tin-sulfur mixture, for the optimum size and spacing of the tiny 3D bumps.

Ready?s 3D thin-film solar cells have been tested on Earth and were found to outperform flat/untextured thin-film cells of the same composition. Because of the 3D structure (which looks like millions of tiny skyscrapers when viewed under a microscope), when light hits the cell, it bounces deeper into the structure and is trapped, rather than reflecting away.

In a flat cell ? especially early and late in the day, when the sun is at an angle ? "the performance really suffers," Ready said.

On the other hand, the performance of the 3D solar cell actually improves at sunset, as light strikes it at a sharper angle.

Ready said he estimates the panels will last just a few months in space, because they will experience wild and rapid temperature fluctuations ? 250 degrees Fahrenheit (121 degrees Celsius) on the sun side to minus 250 degrees Fahrenheit (minus 157 degrees Celsius) on the dark side 45 minutes later ? and are at risk of micrometeorite impacts and atomic oxygen attack.

Nonetheless, Ready hopes the solar cells will stay in space longer. "In my proposal," he said, "I said to leave them up there until they all failed."

This story was provided by TechNewsDaily, a sister site to SPACE.com.

Copyright 2013 SPACE.com, a TechMediaNetwork company. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.

Source: http://news.yahoo.com/3d-textured-solar-cells-tested-space-124041612.html

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বুধবার, ১০ এপ্রিল, ২০১৩

ThermoShield protects your phone in unbearable heat and bone-rattling cold

ThermoShield protects your phone in extreme heat and cold

Rugged phone cases are bountiful. But, while they may offer some additional thermal protection, they're not built for true extremes. For that, you'd need either piles of insulation (too bulky) or some way to control the temperature inside the case. ThermoShield, one of over a dozen student-run companies vying for attention at Northeastern University's Husky Startup Challenge, went the latter route by slipping a Peltier element inside a slim plastic shell. The current prototype was built on a 3D printer and clearly created for an iPhone, but plans for the initial model should be simple enough to port to any handset. A standard watch battery powers the small plate and by controlling the voltage across it you generate either small amounts of heat or produce a slight cooling effect. A simple switch or slider would be used to manually control the flow of electrons. Trekking through the arctic tundra? Simply crank up the heat to keep your phone from freezing to death. Meandering through the Sahara? Take advantage of the Peltier's thermoelectric cooling properties to keep the Gorilla Glass from melting.

According to one of the creators, Hannah Bialic, it wouldn't be terribly difficult to add automatic temperature control. Though, development costs could significantly drive up the price of the ThermoShield. The hardware could all be baked directly into the case itself or an app could be created that would automate everything. Obviously, though, relying on software would limit the case to working with a single device (and let's be realistic, it won't be your beloved Nexus 4). There's no telling when or if you'll actually be able to pick up one of these variable temperature shells, but you can add your name to the mailing list at the more coverage link.

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Source: http://feeds.engadget.com/~r/weblogsinc/engadget/~3/Kmxo-F1UHMM/

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Obama to pitch Buffett tax, killing corporate tax breaks

By Kim Dixon

WASHINGTON (Reuters) - President Barack Obama on Wednesday will issue a greatest hits list of ideas to raise $580 billion in new tax revenues over a decade, including a minimum tax on the wealthy and putting an end to some corporate tax breaks, administration officials said.

The president's 2014 budget proposal, expected to be released in full later on Wednesday, has no chance of moving forward in the divided U.S. Congress. But as lawmakers consider a revamp of the tax code and face a deadline on the government's debt limit this summer, some Obama measures could play a role.

The bid will revive Obama's offer last year to Republican House of Representatives Speaker John Boehner during the negotiations to avoid the so-called fiscal cliff of looming tax hikes and spending cuts.

Senior administration official previewed the budget on condition of anonymity to reporters ahead of the release.

Obama will officially propose a new "Buffett tax" named for investor Warren Buffett that phases in a minimum 30 percent tax rate on household income above $1 million, the advisors said.

He had earlier backed the idea but not included it in his budget proposals.

The White House also will bring back a long-running proposal to cap itemized deductions and exemptions among wealthier taxpayers - starting at household income of roughly $250,000.

The cap would apply to the same list of deductions in years past, officials said. That includes the charitable tax break and the exemption for municipal bond interest.

Obama is not seeking to raise individual tax rates as he has in prior budgets, according to a White House document. For years, he sought to raise rates on household income above $250,000.

The fiscal cliff deal raised rates for households earning more than $450,000 a year, from 35 percent to 39.6 percent.

Also in the budget is ending the tax break for "carried interest" profits earned by fund managers like those who run private equity and other investment firms, officials said.

Administration officials also said to expect the White House to pitch familiar ideas to limit energy tax breaks, curb tax shifting to low-tax countries like the Cayman Islands, and a bid to end a tax break for corporate jets.

Obama proposes cutting the top U.S. corporate tax rate to 28 percent from 35 percent, now the highest in the industrialized world.

Obama has said that he backs a full-scale revamp of the entire tax code, both individual and corporate, and a White House summary called the budget proposals a "down payment."

Top tax-writers in Congress also back a tax rewrite, but the process is fraught with disagreement over how to streamline the code and whether to raise new revenue in the process.

(Editing by Kevin Drawbaugh and Eric Walsh)

Source: http://news.yahoo.com/obama-pitch-buffett-tax-killing-corporate-tax-breaks-100313227--sector.html

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"Iron Lady" Thatcher mourned, but opponents celebrate

By Guy Faulconbridge and Kate Holton

LONDON (Reuters) - Admirers of Margaret Thatcher on Tuesday mourned the "Iron Lady" who as Britain's longest serving prime minister in over a century pitched free-market capitalism as the only medicine for her country's crippled economy and the crumbling Soviet bloc.

World leaders past and present, from Soviet leader Mikhail Gorbachev to U.S. President Barack Obama, led tributes the grocer's daughter who sought to arrest Britain's decline and helped Ronald Reagan broker an end to the Cold War.

"The world has lost one of the great champions of freedom and liberty, and America has lost a true friend," said Obama.

While world leaders praised the most powerful British prime minister since her hero Winston Churchill, the scars of bitter struggles during her rule left Britain divided over her legacy.

Opponents celebrated in south London and the Scottish city of Glasgow, cheering her death and toasting to the death of "the witch" with champagne and cider.

"We've waited a long time for her death," said Carl Chamberlain, 45, unemployed, sporting a grey ponytail and sipping on a can of cider in Brixton, London, the scene of riots in 1981.

Loathed and loved, Thatcher crushed trade unions, privatised swathes of British industry, clashed with European allies and fought a war to recover the Falkland Islands from Argentina.

Tuesday's newspapers told the story: "The Woman Who Saved Britain", declared the Daily Mail while the Daily Mirror, lead on "The Woman Who Divided A Nation" in an article which questioned the grand, ceremonial funeral planned for next week.

Thatcher's body was removed overnight in a transit van with police escort from the Ritz Hotel where she had died on Monday morning following a stroke.

Thatcher's final journey on April 17 will take her from a chapel inside the Palace of Westminster - where she deployed fearsome and forensic debating skills - to a St Paul's Cathedral where she will arrive on a gun carriage drawn horses from Queen Elizabeth's artillery.

Accorded full military honours, Thatcher's funeral is likely to be the grandest funeral for a British politician since Churchill's state funeral in 1965. Thatcher did not want a state funeral. She will be cremated.

Parliament will return from recess for a special session in her honour on Wednesday.

"IRON LADY"

The unyielding, outspoken Thatcher led her Conservative party to three election victories, governing from 1979 to 1990, the longest continuous term in office for a British premier in over 150 years.

She struck up a close relationship with Reagan taking a hostile view of the Soviet Union, backed the first President George Bush during the 1991 Gulf War, and was the first major Western leader to discover that Gorbachev was a man she could "do business with".

"Very few leaders get to change not only the political landscape of their country but of the world. Margaret was such a leader. Her global impact was vast," said Tony Blair, whose term as Labour prime minister from 1997-2007 he acknowledged owed a debt to the former leader of his Conservative opponents.

Conservative Prime Minister David Cameron cut short a visit abroad and flags flew at half mast. "The real thing about Margaret Thatcher is that she didn't just lead our country, she saved our country," Cameron said.

Mourners laid roses, tulips and lilies on the doorstep of her house in Belgravia, one of London's most exclusive areas. One note said: "The greatest British leader" while another said to "The Iron Lady", a soubriquet bestowed by a Soviet army newspaper in the 1970s and which Thatcher loved.

But, in a mark of lingering anger at a woman who explained her belief in private endeavour by declaring "there is no such thing as society", someone also left a bottle of milk; to many Britons, for scrapping free milk for schoolchildren as education minister in 1971, she remained "Maggie Thatcher, Milk Snatcher".

Having retreated into seclusion after being deposed by her party, the death of her businessman husband Denis in 2003 and creeping dementia had kept her out of the public eye for years. She had been in poor health for months.

COLD WARRIOR

The abiding domestic images of her premiership will remain those of conflict: huge police confrontations with mass ranks of coalminers whose year-long strike failed to save their pits and communities; Thatcher riding a tank in a white headscarf; and flames rising above Trafalgar Square in the riots over the deeply unpopular "poll tax" which contributed to her downfall.

To those who opposed her she was blunt to a degree.

"The lady's not for turning," she told Conservatives in 1980 as some urged a "U-turn" on the economy in the facing of rising job losses and crashing poll numbers. She stuck to her plans to pare state spending but could thank extraordinary victory in the Falklands in 1982 for helping her bounce back to re-election.

Argentinians were less moved to praise her than Falklanders who called her "our Winston Churchill". In South Africa, too, there was a coolness after her death as its new, democratic leaders recalled her prevarication on apartheid.

Among Irish republicans, she was remembered as the leader whose firm line saw 10 men starve themselves to death in British jails - and as one who survived the IRA's deadliest attack on the heart of the establishment when it bombed her hotel in 1984.

In Europe, many in the east had warm words for her refusal to back down against Moscow and the inspiration of her reforms of a centrally planned economy. Among those were Chancellor Angela Merkel, a fellow chemist from East Germany who rose to become her reunited country's first woman leader.

In western Europe, where the late French Socialist president Francois Mitterrand once grappled with a conundrum he described as having "the eyes of Caligula but the mouth of Marilyn Monroe", there was respect for her achievements though never great fondness for her "handbagging" lectures on saving money.

GROCERY SHOP TO WORLD STAGE

Brought up in a flat with no hot water above the family grocery in the eastern English town of Grantham, Margaret Hilda Roberts learned thrift and hard work from her Methodist father Alfred before going to Oxford University to study chemistry.

She met her wealthy husband Denis, a divorcee a decade her senior, at a Conservative dinner party. They married in 1951 but the young Thatcher faced snobbery from the party grandees: she was female and far too lowly.

As Conservatives and Labour traded power and blame for an economic and diplomatic decline in the early 1970s, Thatcher was manoeuvring behind the scenes and surprised the party by winning the leadership from former premier Edward Heath in 1975.

She made her mark - after a makeover that changed her hair and her voice - by focusing on fiscal prudence and common sense - potent messages when made against the backdrop of the 1978-79 "winter of discontent" when strikes brought Britain's economy to a halt and the Labour government seemed in thrall to the unions.

Cutting taxes, liberalising exchange controls and privatising state-controlled behemoths, Thatcher transformed Britain's economy and helped strengthen the City of London as a global financial centre only challenged by New York.

The struggles that followed have left their mark on Britain.

"Margaret Hilda Thatcher is gone but the damage caused by her fatally flawed politics sadly lingers on," the National Union of Mineworkers, which Thatcher virtually destroyed during a failed year-long strike, said on its website. "Good Riddance."

"I found her to be confrontational, dogmatic, abrasive; she attacked people in her own country and didn't listen to people in her own party," recalled Caspar Joseph, 51, a history teacher in Manchester. "She was destructive, nihilistic."

"THATCHERISM"

Her personal credo, founded on competition, private enterprise, thrift and self-reliance, gave birth to a political philosophy still referred to as "Thatcherism".

Millions in Britain pay tribute to her radical policies, such as selling off of public housing to its tenants.

But many recalled past bitterness, including in Northern Ireland where republican leader Gerry Adams said she had caused "great suffering"; she took a hard line during a hunger strike in which 10 prisoners died in 1981, and three years later she survived a deadly Irish bomb attack on her party conference.

Thatcher clearly relished her image and humiliated Geoffrey Howe, one of her most respected ministers, in front of the cabinet, helping to spur his resignation and her own downfall.

But behind the doors of her Downing Street residence she would insist on making tea for her ministers, take care over her impeccable outfits and relax with whisky and water after the 18-hour days which became the norm of her rule.

Thatcher's combative opposition to greater European integration antagonised allies in Europe and her own ministers but which still strikes a chord with those in Britain today who fear being drawn into the troubles of the struggling euro zone.

In a few tense weeks at the end of 1990, Thatcher fell from power as some of her most senior ministers, including Howe, turned on her in what she said later was treachery. Thatcher never really recovered from her ousting.

"We are leaving Downing Street for the last time after 11 and a half wonderful years and we are very happy that we leave the United Kingdom in a very, very much better state than when we came here," Thatcher said. For many, the tears she shed that day gave a shocking glimpse of human frailty behind the handbag.

Descending into dementia after years at the top table of world politics, Thatcher became almost a recluse, living out her life behind the white-stucco walls of her Georgian townhouse.

(Editing by Alastair Macdonald)

Source: http://news.yahoo.com/thatcher-mourned-critics-speak-060415272--business.html

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