Please check the URL for proper spelling and capitalization. If you're having trouble locating a destination on Yahoo!, try visiting the Yahoo! homepage or look through a list of Yahoo!'s online services.
Please try Yahoo Help Central if you need more assistance.
Source: http://rss.news.yahoo.com/rss/weightloss
cotton bowl Fiscal cliff deal kathy griffin jadeveon clowney orange bowl Rose Parade 2013 rex ryan
Mar. 1, 2013 ? The first spacecraft NASA has designed to fly astronauts beyond Earth orbit since the Apollo era is well on its way to making a flight test next year, agency officials said Wednesday. The mission is planned for launch in September 2014, and will see an Orion capsule orbit Earth without a crew and return through the atmosphere at speeds unseen since astronauts last returned from the moon in 1972.
"It's a key element of our overall plan to get humans beyond Earth orbit as quickly as we can," said Dan Dumbacher, deputy associate administrator for NASA's Exploration Systems Development Division.
Exploration Flight Test (EFT)-1, will be the first chance engineers get to test Orion's design in space. Flying atop a United Launch Alliance Delta IV rocket, the spacecraft will be pressurized as it would be if astronauts were onboard. It will orbit Earth twice on a track that will take it more than 3,600 miles above us, about 15 times higher than the International Space Station.
From that height, Orion will be steered to a re-entry at speeds of about 20,000 mph, slamming into the atmosphere to test whether the heat shield will protect the spacecraft adequately.
"It allows us to stress the heat shield in conditions that are very close to what we will see coming back from a region around the moon," said Mark Geyer, Orion program manager. "This is going to help us make our heat shield lighter, safer and more reliable."
Launching from Cape Canaveral Air Force Station in Florida, the spacecraft will carry scores of instruments. Even the heat shield will have instruments to measure temperature and plasma flow around the spacecraft as it endures the searing conditions of high-speed reentry.
Engineers will use the readings to update computer models and refine designs for the spacecraft, ground support equipment and the in-development Space Launch System rocket. The agency also will provide the data to the agency's commercial partners developing their own spacecraft.
Orion will land under parachutes in the Pacific Ocean where recovery teams from NASA's Kennedy Space Center in Florida and the Department of Defense will retrieve it and return it to Florida.
Just as the mission will help spacecraft designers, the recovery will show those on the ground what to expect when they begin retrieving crews after long missions into deep space, said Pepper Phillips, director of the Ground Systems Development and Operations Program based at Kennedy.
"The teams are exercising some static tests now, but we're going to be ready with this full-up active test of a live spacecraft," Phillips told reporters who had gathered in the Young-Crippen Firing Room at Kennedy for the update Feb. 27.
The firing room, which has been refurbished and extensively modified since last hosting a space shuttle launch, will give engineers direct links to the Orion after it is powered up later this year. Launch controllers will follow the mission from the same firing room, as well.
NASA designed Orion as a versatile spacecraft able to handle the hardships of flying safely far beyond Earth's atmosphere to take astronauts to distant destinations such as an asteroid and Mars. Starting in 2017, Orion spacecraft will be paired with the agency's Space Launch System (SLS), a massive rocket in development more powerful than the Saturn V that propelled astronauts to the moon.
Although EFT-1 will focus largely on testing the Orion spacecraft, it also will aid the teams designing and building the SLS, said Todd May, program manager for the new booster.
"There are a lot of things about this mission that helps SLS," May said. "A lot of this data we're going to use to understand the structural properties, the aero-loading, the guidance navigation and control that we feed back into our calculations."
The SLS team, based at Marshall Spaceflight Center in Huntsville, Ala., designed and built an adapter ring for this mission that will connect Orion's broad base with the much narrower Delta IV second stage.
While the Orion spacecraft takes shape inside the Operations and Checkout Building at Kennedy, the heat shield's skin and skeleton have been finished. The heat-resistant coating will be applied next month and the all-important component will be shipped to Kennedy in July for attachment to the spacecraft.
NASA has designed the mission to evaluate how the spaceship behaves in 10 of the 16 highest risk areas for a crew. Avionics systems, software and the myriad other elements that go into a spacecraft are expected to get a rigorous workout. Those elements are making their way into the spacecraft in a careful procession as Lockheed Martin builds up Orion into a working spacecraft.
"We all have these great (computer) models but when you fly in the real environment, does it behave as you expect," Geyer said.
The flight will begin a series of flight tests for the Orion and Space Launch System programs as the agency moves toward launching astronauts into space in 2021. Orion is scheduled to fly a second test mission in 2017 aboard the first Space Launch System booster.
Along the way, engineers also will conduct smaller-scale flight tests to evaluate the performance of specific systems such as the escape rocket designed to pull a crew out of harm's way in the event of an emergency during launch and ascent.
The progression from concept drawings to working with mockups and replicas to building the actual spacecraft reinvigorates the teams, the officials said.
"I think it helps keep the team's morale up and you want to see a steady beat of successes as you move forward," May said.
"Now we're actually doing it," Geyer said. "It shows you that we're putting the expertise into actually making it happen."
Share this story on Facebook, Twitter, and Google:
Other social bookmarking and sharing tools:
Story Source:
The above story is reprinted from materials provided by NASA.
Note: Materials may be edited for content and length. For further information, please contact the source cited above.
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.
looper New Years Eve new years washington redskins New Year Outback Bowl Carly Rae Jepsen
Feb. 27, 2013 ? Accelerating a free electron with a laser has been a longtime goal of solid-state physicists. David Cline, a distinguished professor in the UCLA Department of Physics and Astronomy, and Xiaoping Ding, an assistant researcher at UCLA, have conducted research at Brookhaven National Laboratory in New York and have established that an electron beam can be accelerated by a laser in free space.
This has never been done before at high energies and represents a significant breakthrough, Cline said, adding that it also may have implications for fusion as a new energy source.
In free space, a plane-wave laser is unable to accelerate an electron, according to the Lawson-Woodward theorem, posited in 1979. However, Yu-kun Ho, a professor at China's Fudan University in Shanghai, and his research group have proposed a concept of what physicists refer to as the capture-acceleration scenario to show that an electron can be accelerated by a tightly focused laser in a vacuum.
In the capture-acceleration scenario, the diffraction from a tightly focused laser changes not only the intensity distribution of the laser but also its phase distribution, which results in the field phase velocity being lower than the speed of light in a vacuum in some areas.
Thus, a channel that overlaps features of both strong longitudinal electric field and low-laser-phase velocity is created, and electrons can receive energy gain from the laser. The acceleration effect increases along with increasing laser intensity, Cline said. This channel for electrons may be useful for other scientific endeavors, such as guiding an electron beam into a specific region of laser fusion applications, he said.
A possible application of this discovery is the use of laser plasma fusion to provide a new energy source for the U.S. and other countries. The focus of the laser generates a natural channel that can capture electrons and drive them into a pellet that explodes, by fusion, to produce excess energy, Cline said.
With federal funding from the U.S. Department of Energy, a project to carry out a proof-of-principle beam test for the novel vacuum acceleration at Brookhaven National Laboratory's Accelerator Test Facility (BNL-ATF) has been proposed and approved -- a collaboration among the UCLA Center for Advanced Accelerators, of which Cline is principal investigator, Ho's group and the Accelerator Test Facility team.
BNL-ATF is one of the few facilities that can provide both a high-quality electron beam and a high-intensity laser beam for the beam test, Cline said. Ho's group provides theoretical support. UCLA scientists -- Cline, Ding and Lei Shao, a former UCLA physics graduate student of Cline's -- are responsible for the whole experiment and the experimental data analysis.
Simulation research work and hardware design have been done in accordance with BNL-ATF's experimental conditions. The simulation results predict that vacuum laser acceleration phenomena can be observed with ATF's diagnostic system.
Share this story on Facebook, Twitter, and Google:
Other social bookmarking and sharing tools:
Story Source:
The above story is reprinted from materials provided by University of California - Los Angeles.
Note: Materials may be edited for content and length. For further information, please contact the source cited above.
Journal References:
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.
philadelphia flyers 4/20 student loan forgiveness ufc 145 weigh ins record store day 2012 detroit red wings jose canseco
Forget the rights and wrongs of the decision by two Tooks' barristers to start a company charging wannabes for pupillage application advice from their head of chambers, Michael Mansfield QC. And consider how it reflects on the wider criminal Bar...
In the good old days, when publicly funded legal work was well-remunerated, barristers would never have dreamed of making money off law students. Even if they had no issue with the ethics of for-profit pupillage advice, their time would have been more profitably spent doing legal work.
Now, with fees for junior criminal barristers dipping below minimum wage levels, that's no longer true. Yet applications for the Bar Professional Training Course (BPTC) are at their highest for years.
In this week's podcast, College of Law GDL student Alice Christian?? who was one of the first students to tweet about the ?186-to-see-Michael-Mansfield event?? explains to Legal Cheek trio Lucy Pether, Kevin Poulter and Alex Aldridge why, in spite of everything, she still wants to be a criminal barrister...
This podcast is also available on iTunes.
This entry was posted in Barristers, News, Podcast, RoundMyKitchenTable, Students and tagged Alex Aldridge, Alice Christian, Barristers, GDL, Kevin Poulter, Lucy Pether, Michael Mansfield QC, News, Podcast, RoundMyKitchenTable, Students, Tooks Chambers. Bookmark the permalink.colbert super pac colbert super pac sloth birth control pill recall ground hog day florida primary results black history
Feb. 28, 2013 ? To show spatial animations on websites, developers so far have had only two options: to use special software or to implement it from scratch. Computer scientists at Saarland University have developed a declarative markup language which facilitates the creation of distinct spatial animations and ensures their smooth replay in the web browser.
The researchers will show their results at the trade fair Cebit in Hannover starting on 5 March (Hall 9, booth F34).
It could be a grotto. Light is glowing up from below and gives the moving waves a glance of an opal under the sunlight. "This computer graphic was written with our new description language by a schoolboy in not more than two hours after a briefly reading of the instructions," explains Felix Klein, doctoral candidate at the chair of Computer Graphics at Saarland University. As Klein is moving three slide switches with the mouse which are placed under the wave graphic on the display, the water is transforming. Now, the waves are spreading circularly from the center point, as if someone had thrown a pebble into the middle of the water.
"Xflow" is the name of the new description language developed by Klein and his colleagues. It makes it not only possible to describe such three-dimensional appearing animations more easily but also manages it that the required data is efficiently processed by the central processing unit and the graphics processor. Hence, the animation is running in the browser fluidly. "Up till now, this has not been that easy," explains Philipp Slusallek, professor for Computer Graphics at Saarland University. "Meanwhile, even a mobile phone has enough computing power to play spatial data content from the internet. But the web technologies, necessary for using 3D content on the web, and the machine-orientated programming of graphic hardware have not found a common ground yet," so Slusallek, who also works as Scientific Director of the German Research Center for Artificial Intelligence and as Director of Research of the Intel Visual Computing Institute in Saarbr?cken.
Xflow shall help to fill this gap. It's declarative. What means in this case, that the developers rather describe which pattern synthesis effects shall get constructed, than to wrack their brains about how these can be computed in detail. In its appearance, Xflow resembles to the languages HTML and Javascript. With Javascript, it is indeed possible to describe three-dimensional data contents; however the data, which is needed for that, cannot be computed offhand in a parallel and thus efficient way. Xflow allows the so-called parallelization automatically due to its structure. Neither, the programmers need to worry about this, nor about the allocation of disk space. Other software systems can also accomplish this, but with them only a limited number of shifts, textures and pattern effects can be described.
Xflow offers an alternative by defining a multiplicity of small components, so-called operators, of which complex animations can be created easily. In doing so, it uses the service of the HTML-upgrading XML3D, which allows the easy embedding of spatial data contents on websites. It was also developed by Philipp Slusallek and his team. He is confident: "After XML3D we took the next step forward to present three-dimensional contents on the internet in such an easy way as it's already the case with embedded Youtube videos." The development of Xflow has been supported by the Intel Visual Computing Institute (IVCI) of Saarland University and by the German Research Center for Artificial Intelligence (DFKI).
Share this story on Facebook, Twitter, and Google:
Other social bookmarking and sharing tools:
Story Source:
The above story is reprinted from materials provided by University Saarland, via AlphaGalileo.
Note: Materials may be edited for content and length. For further information, please contact the source cited above.
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.
final four lotto winners mega ball winning numbers baltimore county current tv megamillions ncaa basketball tournament 2012
Back when Microsoft released its Office 365 subscription service for home users, it said the business version would be arriving on February 27th. Sure enough, today's the 27th, and Microsoft's issued a press release explaining the pricing for Office 365 ProPlus, Midsize Business and Small Business Premium.
At the least expensive end of the spectrum is ProPlus, which includes Word, Excel, PowerPoint, OneNote, Outlook, Publisher, InfoPath and Access. Like the Home Premium version of Office 365, a user can install the software on up to five devices, though IT controls are of course more of selling point here than they are on the consumer version. That costs $144 per user for a one-year subscription.
Moving on, the medium-sized-business sku costs $180 per user per year, and adds Exchange Online, SharePoint Online, Lync Online and a few IT tools. It, too, is based on the same five-device-per-user model as ProPlus. As for the small business version, you get all the basic Office apps, plus email, shared calendars, website tools and videoconferencing. Pricing there is $150 per user per year. Sorry, though, no dice on the five-device, ProPlus thing -- that's not included in the small biz version.
Filed under: Software, Microsoft
Source: Microsoft
Source: http://www.engadget.com/2013/02/27/microsofts-office-365-now-available-for-businesses/
ncaa final four 2012 uk vs louisville university of kansas buckeye west side story final four 2012 bridesmaids
BEIRUT (AP) ? Anti-regime activists say Syrian rebels are clashing with government forces on two sides of the northern city of Aleppo as well as near its historic mosque.
The Britain-based Syrian Observatory for Human Rights says at least six rebels were killed in fighting Wednesday near a police academy west of the city and clashes also raged on a key supply road leading to the southeast part of the city.
The Observatory also says rebel and regime forces controlled different parts of the 12th century Umayyad Mosque in Aleppo's walled city.
Syria's largest city, Aleppo, has been a key battleground in the civil war since rebels entered the city in July 2012.
The U.N. says more than 70,000 people have been killed since Syria's civil war started in March 2011.
Source: http://news.yahoo.com/syrian-forces-clash-rebels-around-aleppo-125319092.html
godaddy did the groundhog see his shadow Ray Lewis Murder UFC 156 my bloody valentine Super Bowl Winners what time does the superbowl start
