Thursday, June 20, 2013

TECHNOLOGY NEWS: Ford now using robots to test durability of its trucks

TopGear.com.ph Philippine Car News - Ford now using robots to test its trucks' durability

The human body is a delicate thing and it can only take so much physical abuse. So, to protect its drivers--and test the limits of its trucks' durability--Ford's engineers developed the industry?s first robotic test-driving program, which is now in use at the carmaker's proving grounds in Romeo, Michigan, in the US.

"Some of the tests we do on our commercial trucks for North America are so strenuous that we limit the exposure time for human drivers," said Ford vehicle development operations manager Dave Payne. "The challenge is completing testing to meet vehicle development timelines while keeping our drivers comfortable. Robotic testing allows us to do both. We accelerate durability testing while simultaneously increasing the productivity of our other programs by redeploying drivers to those areas, such as noise level and vehicle dynamics testing."

According to Ford, the technology includes a robotic control module that's installed in the test vehicle and controls its steering, acceleration and braking. The module is programmed to follow a predetermined course with the vehicle's position being tracked by cameras in a central control room and through GPS that's accurate to one inch. If the vehicle strays off its course, engineers can stop the vehicle, course-correct as necessary, and restart the test. Onboard sensors can also command the vehicle to come to a full stop if a pedestrian or another vehicle strays into the path.

The American carmaker added that the tests the vehicles are subjected to "compress 10 years of daily driving abuse into courses just a few hundred yards long," with surfaces that vary in severity, like broken concrete, cobblestones, metal grates, rough gravel, mud pits and oversized speed bumps.

For Ford, the robotic technology accomplishes two goals: to protect human drivers and to engineer its trucks to be tougher than ever.

"The goal here was not to develop a truly autonomous vehicle that can drive itself on city streets," shared Payne. "Our objective was to create a test-track solution that allows for this type of intense testing that could take our vehicles to the most extreme limits of their engineering while ensuring the safety of all involved."

Who knows how much tougher the Ford Ranger would be if it were developed using this robotic technology?

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Source: http://www.topgear.com.ph/news/technology-news//ford-now-using-robots-to-test-durability-of-its-trucks

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Milestone for quantum networks: First entanglement between light and an optical atomic coherence

June 19, 2013 ? Using clouds of ultra-cold atoms and a pair of lasers operating at optical wavelengths, researchers have reached a quantum network milestone: entangling light with an optical atomic coherence composed of interacting atoms in two different states. The development could help pave the way for functional, multi-node quantum networks.

The research, done at the Georgia Institute of Technology, used a new type of optical trap that simultaneously confined both ground-state and highly-excited (Rydberg) atoms of the element rubidium. The large size of the Rydberg atoms -- which have a radius of about one micron instead of a usual sub-nanometer size -- gives them exaggerated electromagnetic properties and allows them to interact strongly with one another.

A single Rydberg atom can block the formation of additional Rydberg atoms within an ensemble of atoms, allowing scientists to create single photons on demand. Georgia Tech professor Alex Kuzmich and collaborators published a report on the Rydberg single-photon source in the journal Science in April 2012, and in a subsequent Nature Physics article, demonstrated for the first time many-body Rabi oscillations of an atomic ensemble.

In the new research, the state-insensitive trap allowed the researchers to increase the rate at which they could generate photons by a factor of 100 compared to their previous work.

"We want to allow photons to propagate to distant locations so we can develop scalable protocols to entangle more and more nodes," said Kuzmich, a professor in Georgia Tech's School of Physics. "If you can have coherence between the ground and Rydberg atoms, they can interact strongly while emitting light in a cooperative fashion. The combination of strong atomic interactions and collective light emissions results in entanglement between atoms and light. We think that this approach is quite promising for quantum networking."

The research was reported June 19 in the early edition of the journal Nature. The research has been supported by the Atomic Physics Program and the Quantum Memories Multidisciplinary University Research Initiative (MURI) of the Air Force Office of Scientific Research, and by the National Science Foundation.

Generating, distributing and controlling entanglement across quantum networks are the primary goals of quantum information science being pursued at research laboratories around the world. In earlier work, ground states of single atoms or atomic ensembles have been entangled with spontaneously-emitted light, but the production of those photons has been through a probabilistic approach -- which generated photons infrequently.

This spontaneous emission process requires a relatively long time to create entanglement and limits the potential quantum network to just two nodes. To expand the potential for multi-mode networks, researchers have explored other approaches, including entanglement between light fields and atoms in quantum superpositions of the ground and highly-excited Rydberg electronic states. This latter approach allows the deterministic generation of photons that produces entanglement at a much higher rate.

However, until now, Rydberg atoms could not be excited to that state while confined to optical traps, so the traps had to be turned off for that step. That allowed the confined atoms to escape, preventing realization of atom-light entanglement.

Based on a suggestion from MURI colleagues at the University of Wisconsin, the Georgia Tech team developed a solution to that problem: a state-insensitive optical trap able to confine both ground-state and Rydberg atoms coherently. In this trap, atoms persist for as much as 80 milliseconds while being excited into the Rydberg state -- and the researchers believe that can be extended with additional improvements. However, even the current atomic confinement time would be enough to operate complex protocols that might be part of a quantum network.

"The system we have realized is closer to being a node in a quantum network than what we have been able to do before," said Kuzmich. "It is certainly a promising improvement."

Key to the improved system is operation of an optical trap at wavelengths of 1,004 and 1,012 nanometers, so-called "magic" wavelengths tuned to both the Rydberg atoms and the ground state atoms, noted Lin Li, a graduate student in the Kuzmich Laboratory.

"We have experimentally demonstrated that in such a trap, the quantum coherence can be well preserved for a few microseconds and that we can confine atoms for as long as 80 milliseconds," Li said. "There are ways that we can improve this, but with the help of this state-insensitive trap, we have achieved entanglement between light and the Rydberg excitation."

The rate of generating entangled photons increased from a few photons per second with the earlier approaches to as many as 5,000 photons per second with the new technique, Kuzmich said. That will allow the researchers to pursue future research goals -- such as demonstration of quantum gates -- as they optimize their technique.

Experimentally, the research works as follows: (1) an ultra-cold gas of rubidium atoms was confined in a one-dimensional optical lattice using lasers operating at 1,004-nanometer and 1,012-nanometer wavelengths. The atomic ensemble was driven from the collective ground state into a single excited state; (2) By applying a laser field, an entangled state was generated. The retrieved field was mixed with the coherent field using polarizing beam-splitters, followed by measurement at single-photon detectors; (3) The remaining spin wave was mapped into a field by a laser field.

According to Kuzmich, the success demonstrates the value of collaboration through the MURI supported by the Air Force Office of Scientific Research, which in 2012 awarded $8.5 million to a consortium of seven U.S. universities that are working together to determine the best approach for creating quantum memories based on the interaction between light and matter.

Through the MURI, a team of universities is considering three different approaches for creating entangled quantum memories that could facilitate long-distance transmission of secure information. Among the collaborators in the five-year program are Mark Saffman and Thad Walker at the University of Wisconsin, Mikhail Lukin of Harvard, and Luming Duan of the University of Michigan, who at the beginning of this century made pioneering proposals which formed the basis of the approach that Kuzmich, Li and colleague Yaroslav Dudin used to create the entanglement between light and the Rydberg excitation.

This research was supported by the Air Force Office of Scientific Research (AFOSR) under contract FA9550-12-1-0025 and the by National Science Foundation under award PHY-1105994.?

Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_science/~3/YKjctWwYO8w/130619132448.htm

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Wednesday, June 19, 2013

Russia: G-8 declaration won't mention Assad's fate

ENNISKILLEN, Northern Ireland (AP) ? A senior Russian diplomat says the G-8 summit's joint statement on ending the Syrian civil war will not mention whether Bashar Assad must step down from power as part of any peace settlement.

Russian Deputy Foreign Minister Sergei Ryabkov told reporters Tuesday that the eight nations have agreed they should not specify any outcome from peace talks that all agree should start soon in Geneva.

Ryabkov says the talks should aim to create a transitional coalition government for Syria, but should not predetermine whether Assad can participate in that government.

The formal Syria declaration is expected to be published later Tuesday.

Ryabkov dismissed Western claims that Assad's forces used chemical weapons as unproven and said they require further investigation.

Source: http://news.yahoo.com/russia-g-8-declaration-wont-mention-assads-fate-123503092.html

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Airborne laser reveals hidden city in Cambodia

In this photo taken on June 28, 2012, Cambodia's famed Angkor Wat temples complex stands in Siem Reap province, some 230 kilometers (143 miles) northwest Phnom Penh, Cambodia. Airborne laser technology has uncovered a network of roadways and canals, illustrating a bustling ancient city linking Cambodia's Angkor Wat temples complex. The discovery was announced late Monday, June 17, 2013, in a peer-reviewed paper released early by the journal Proceedings of the National Academy of Sciences. (AP Photo/Heng Sinith)

In this photo taken on June 28, 2012, Cambodia's famed Angkor Wat temples complex stands in Siem Reap province, some 230 kilometers (143 miles) northwest Phnom Penh, Cambodia. Airborne laser technology has uncovered a network of roadways and canals, illustrating a bustling ancient city linking Cambodia's Angkor Wat temples complex. The discovery was announced late Monday, June 17, 2013, in a peer-reviewed paper released early by the journal Proceedings of the National Academy of Sciences. (AP Photo/Heng Sinith)

(AP) ? Airborne laser technology has uncovered a network of roadways and canals, illustrating a bustling ancient city linking Cambodia's famed Angkor Wat temple complex.

The discovery was announced late Monday in a peer-reviewed paper released early by the journal Proceedings of the National Academy of Sciences. The laser scanning revealed a previously undocumented formally planned urban landscape integrating the 1,200-year-old temples.

The Angkor temple complex, Cambodia's top tourist destination and one of Asia's most famous landmarks, was constructed in the 12th century during the mighty Khmer empire. Angkor Wat is a point of deep pride for Cambodians, appearing on the national flag, and was named a UNESCO World Heritage Site.

Archaeologists had long suspected that the city of Mahendraparvata lay hidden beneath a canopy of dense vegetation atop Phnom Kulen mountain in Siem Reap province. But the airborne lasers produced the first detailed map of a vast cityscape, including highways and previously undiscovered temples.

"No one had ever mapped the city in any kind of detail before, and so it was a real revelation to see the city revealed in such clarity," University of Sydney archaeologist Damian Evans, the study's lead author, said by phone from Cambodia. "It's really remarkable to see these traces of human activity still inscribed into the forest floor many, many centuries after the city ceased to function and was overgrown."

The laser technology, known as lidar, works by firing laser pulses from an aircraft to the ground and measuring the distance to create a detailed, three-dimensional map of the area. It's a useful tool for archaeologists because the lasers can penetrate thick vegetation and cover swaths of ground far faster than they could be analyzed on foot. Lidar has been used to explore other archaeological sites, such as Stonehenge.

In April 2012, researchers loaded the equipment onto a helicopter, which spent days crisscrossing the dense forests from 800 meters (2,600 feet) above the ground. A team of Australian and French archaeologists then confirmed the findings with an on-foot expedition through the jungle.

Archaeologists had already spent years doing ground research to map a 9-square-kilometer (3.5-square-mile) section of the city's downtown area. But the lidar revealed the downtown was much more expansive ? at least 35 square kilometers (14 square miles) ? and more heavily populated than once believed.

"The real revelation is to find that the downtown area is densely inhabited, formally-planned and bigger than previously thought," Evans said. "To see the extent of things we missed before has completely changed our understanding of how these cities were structured."

Researchers don't yet know why the civilization at Mahendraparvata collapsed. But Evans said one theory is that possible problems with the city's water management system may have driven people out.

The next step for researchers involves excavating the site, which Evans hopes will reveal clues about how many people once lived there.

Associated Press

Source: http://hosted2.ap.org/APDEFAULT/b2f0ca3a594644ee9e50a8ec4ce2d6de/Article_2013-06-18-US-SCI-Ancient-Cambodia/id-767ebbd550dc493b933e6be819788ed3

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Tuesday, June 11, 2013

Afghan president to visit Qatar

KABUL, Afghanistan (AP) ? Afghan President Hamid Karzai was to visit Qatar on Sunday to discuss his country's stalled peace process and the possible opening of a Taliban office in the Gulf state, officials said.

Foreign Ministry spokesman Janan Mosazai said Karzai will not hold any talks with Taliban representatives currently in Qatar.

He will hold meetings with Qatari officials on the sidelines of an annual conference on relations between the United States and the Muslim world.

"As we have already said, any official negotiations regarding peace with the Taliban can only take place between the high-ranking Taliban representatives and the High Peace Council of Afghanistan," Mosazai told reporters.

Karzai's office said he was accompanied by senior ministers and advisers.

"During this visit, the President will meet with Qatari officials to discuss Afghanistan's peace process and bilateral relations between the two countries," his office said in a statement.

Both Afghanistan and the United States support the opening of a Taliban political office in Qatar as part of an effort to rekindle talks with the insurgent group, which has been waging war against the government and U.S.-led military coalition for nearly 12 years.

Afghanistan has said all talks must be carried out by the peace council, a group formed by President Hamid Karzai to try and find ways to initiate negotiations with the insurgents.

The council has so far failed to start any form of negotiations with the Taliban since U.S.-initiated peace talks collapsed last year. It is made up of influential Afghans, former Taliban and tribal elders from all Afghan ethnic groups.

The Taliban have met representatives of about 30 countries, participated in international forums in Tokyo and France, and recently visited Iran ? a traditional enemy. But they have steadfastly refused to talk to the peace council or Karzai's representatives, saying they represent a "puppet" government.

Mosazai reiterated the Afghan government's support for the opening of a Taliban office in Qatar, but "only under the conditions and principles which would be acceptable for the Afghan people."

He would not comment on the recent trip to Iran by Taliban representatives.

"Unfortunately the Taliban have very good relations with foreign countries, but they have enmity with the Afghan people, they are killing Afghan people while they are carrying out terrorist attacks," Mosazai said.

Source: http://news.yahoo.com/afghan-president-visit-qatar-090123695.html

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Monday, June 10, 2013

Sometimes it seems the only people the Obama administration doesn?t spy on are themselves (Michellemalkin)

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S&P upgrades US outlook, but investors yawn

NEW YORK (AP) ? The Standard & Poor's ratings agency said Monday it's getting more optimistic about the U.S. economy. But investors just yawned.

Stocks budged higher when trading opened, shortly after the S&P agency raised its outlook for the U.S. government's debt rating and credited "the strengths of the economy." But the gains proved both modest and fickle, and the market spent most of the day flitting between small gains and losses.

At day's end, the Dow Jones industrial average and the S&P 500 were lower, but just barely. The Nasdaq composite was slightly higher. It was a marked change from Friday, when the Dow jumped 207 points after a jobs report that investors viewed as positive.

Trading volume was light, and there were no major economic reports or company announcements. The 10 industry sectors in the S&P were split down the middle, with half rising and half falling, but none moved dramatically. The best performer, telecommunications, was up 0.8 percent. The worst, consumer discretionary, was down 0.3 percent.

Booz Allen Hamilton slid after a company employee said he had leaked information about secret government surveillance programs. The consulting company's stock dropped 46 cents, or 2.6 percent, to $17.54.

The S&P's statement harkened back to August 2011, when the agency slashed its rating of the U.S. government's debt because Congress was in a heated battle over whether to raise government spending limits. The downgrade, an embarrassment to the U.S., also sent the stock market into a tailspin. The Dow plunged 634 points, or more than 5 percent, on the first trading day after the downgrade. The market had triple-digit swings throughout that fall.

On Monday, S&P upgraded its outlook on the U.S. debt rating to "Stable" from "Negative." That doesn't restore the U.S. government's top-shelf credit rating, but it does mean that S&P is unlikely to cut the rating again in the near future.

S&P cited the Federal Reserve's willingness to keep interest rates low, which is meant to spur borrowing and spending, and its bond purchasing program, which is meant to encourage investors to buy stocks and other riskier assets. S&P also noted approvingly that Congress had agreed to raise some taxes this year, notably the Social Security tax that most workers pay, which has helped shrink the government's budget deficit.

The reaction from investors was a far cry from two summers ago. Some doubted the S&P's assessment that the economy is improving, and said the Fed is only artificially propping it up.

Ed Butowsky, managing partner of Chapwood Investments in Dallas, said that the unemployment rate is still too high, economic growth too weak and the government's budget deficit too heavy for the economy to be considered healthy.

"It defies economic logic as to why the S&P did this," Butowsky said. "...We continue to print money, we continue to spend money. What are they looking at?"

Others agreed with the S&P's assessment, but said it was old news.

Jerry Webman, chief economist at OppenheimerFunds in New York, thinks the economy is strong enough to drive sustainable earnings growth, but not so strong that the Fed might pull the plug on its stimulus measures ? a sentiment that seemed to drive Friday's rally. Still, he thinks investors shouldn't draw too many conclusions from a single S&P report.

"On the question of what's moving the U.S. stock market," Webman said, "the answer is 'Not much.'"

The Dow closed down 9.53 points at 15,238.59, a loss of 0.06 percent. The S&P 500 index was essentially flat, falling 0.57 point to 1,642.81, or 0.03 percent. The Nasdaq composite edged up 4.55 points to 3,473.77, a gain of 0.1 percent.

Outside the U.S., Japan's Nikkei stock index soared 4.9 percent after a report that the world's No. 3 economy is growing faster than expected. But there were also reminders that the global economy is far from cured. In the Netherlands, the central bank warned that the government needs to cut spending. Courts in Germany are poised to consider whether Germany is legally allowed to bail out struggling European countries, as it has been doing.

The yield on the 10-year Treasury note edged up to 2.21 percent from 2.18 percent late Friday, a sign that investors were more willing to put their money in the stock market. In commodities trading, the price of crude oil fell 26 cents to $95.77 per barrel, and gold edged up $3 to $1,386 an ounce.

Among companies making big moves:

?Facebook jumped after Stifel Nicolaus analysts upgraded the stock to "Buy" from "Hold," saying the company is one of the most compelling investments in the Internet sector. The stock rose $1.04, or 4.5 percent, to $24.33.

?B&G Foods, whose brands include Cream of Wheat and Mrs. Dash, jumped after announcing it would buy Robert's American Gourmet Food, whose brands include Pirate's Booty and Smart Puffs. B&G Foods rose $1.99, or 6.8 percent, to $31.17.

?Apricus Biosciences soared after reporting that its impotence drug, Vitaros, has been approved in 10 European countries. The stock shot up 17 cents, or 6.6 percent, to $2.73.

Source: http://news.yahoo.com/p-upgrades-us-outlook-investors-yawn-143301693.html

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