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Source: http://stupidcelebrities.net/2013/03/alec-baldwin-hilaria-thomas-having-a-girl/
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Mar. 7, 2013 ? A new technique developed by University of Toronto Engineering Professor Ted Sargent and his research group could lead to significantly more efficient solar cells, according to a recent paper published in the journal Nano Letters.
The paper, "Jointly-tuned plasmonic-excitonic photovoltaics using nanoshells," describes a new technique to improve efficiency in colloidal quantum dot photovoltaics, a technology which already promises inexpensive, more efficient solar cell technology. Quantum dot photovoltaics offers the potential for low-cost, large-area solar power -- however these devices are not yet highly efficient in the infrared portion of the sun's spectrum, which is responsible for half of the sun's power that reaches Earth.
The solution? Spectrally tuned, solution-processed plasmonic nanoparticles. These particles, the researchers say, provide unprecedented control over light's propagation and absorption.
The new technique developed by Sargent's group shows a possible 35 per cent increase in the technology's efficiency in the near-infrared spectral region, says co-author Dr. Susanna Thon. Overall, this could translate to an 11 per cent solar power conversion efficiency increase, she says, making quantum dot photovoltaics even more attractive as an alternative to current solar cell technologies.
"There are two advantages to colloidal quantum dots," Thon says. "First, they're much cheaper, so they reduce the cost of electricity generation measured in cost per watt of power. But the main advantage is that by simply changing the size of the quantum dot, you can change its light-absorption spectrum. Changing the size is very easy, and this size-tunability is a property shared by plasmonic materials: by changing the size of the plasmonic particles, we were able to overlap the absorption and scattering spectra of these two key classes of nanomaterials."
Sargent's group achieved the increased efficiency by embedding gold nanoshells directly into the quantum dot absorber film. Though gold is not usually thought of as an economical material, other, lower-cost metals can be used to implement the same concept proved by Thon and her co-workers.
She says the current research provides a proof of principle. "People have tried to do similar work but the problem has always been that the metal they use also absorbs some light and doesn't contribute to the photocurrent -- so it's just lost light."
More work needs to be done, she adds. "We want to achieve more optimization, and we're also interested in looking at cheaper metals to build a better cell. We'd also like to better target where photons are absorbed in the cell -- this is important photovoltaics because you want to absorb as many photons as you can as close to the charge collecting electrode as you possibly can."
The research is also important because it shows the potential of tuning nanomaterial properties to achieve a certain goal, says Paul Weiss, Director of the California NanoSystems Institute.
"This work is a great example of fulfilling the promise of nanoscience and nanotechnology," Weiss says. "By developing the means to tune the properties of nanomaterials, Sargent and his co-workers have been able to make significant improvements in an important device function, namely capturing a broader range of the solar spectrum more effectively."
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Source: http://feeds.sciencedaily.com/~r/sciencedaily/top_news/top_science/~3/NDER8ki7tPo/130307145716.htm
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BARCELONA, Spain ? Cars will soon be so linked into wireless networks they will be like giant rolling smartphones ? with calling systems, streaming video, cameras and applications capable of harnessing the unprecedented trove of data vehicles will produce about themselves and the humans who drive them.
The battle over who can access all this data is an awkward undercurrent amid recent announcements by car manufacturers touting their new, Internet-capable vehicle systems.
Low on gas? Soon a gas station app may know before you do. Tires need rotating? Your car may wirelessly alert your dealership when it?s time. Ready for a lunch break? Your car can make a reasonable guess based on the hour. A savvy restaurant app may soon use additional detail, such as whether the person in the back seat is watching a Disney movie, in deciding to offer an advertisement featuring a Happy Meal and directions to the nearest McDonalds.
Cars have long gathered data to monitor safety and performance. But their newfound connectivity may allow a range of parties ? automakers, software developers, perhaps even police officers ? new access to such information, privacy advocates say. Because few U.S. laws govern these issues, consumers have little control over who can see this data and how it can be used.
More than 60 percent of vehicles worldwide will be connected directly to the Internet by 2017, up from 11 percent last year, predicts ABI Research. In North America and Europe, that percentage is likely to reach 80 percent.
Many cars already record their speed, direction and gear setting, as well as when brakes activate and for how long. Newer systems also can track whether road surfaces are slick or whether the driver is wearing a seat belt - information potentially valuable to police and insurance companies investigating crashes. (Some car insurance companies already monitor driving behavior in exchange for discounted rates.)
"The cars produce literally hundreds of megabytes of data each second," said John Ellis, a Ford technologist who demonstrated some of the new Internet-based systems at the company?s display at the Mobile World Congress, which ended last week in Barcelona. "The technology is advancing so much faster than legislation or business models are keeping up. . . . What can government do? What can you do?"
Such issues go beyond vehicles. Many of the nearly 1,500 exhibits at the Mobile World Congress touted technology fueled by personal information. Thermostats, health sensors, even Dumpsters, can function better, according to companies exhibiting their products here, if individual behavior is tracked.
In the United States, proposed new federal highway safety rules would require all new cars by 2014 to come equipped with so-called "black boxes" to save vehicle information from the final seconds before and after crashes. The plan has prompted several privacy groups to lobby for an explicit declaration that data produced by a vehicle is owned by the motorist, with authorities having access only under certain conditions.
Yet some vehicle computer systems already on the road offer the potential for monitoring driver behavior to a far greater extent than "black boxes" do. A critical review of an electric car in The New York Times last month that said the vehicle lost power in cold weather drew an exceptionally detailed rebuttal from the manufacturer, Tesla, that cited logs kept by an onboard computer. (The Times has stood by its review.)
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There are few legal standards for what information a vehicle can collect, how it can be used and by whom. Each manufacturer produces its own onboard Internet systems, each with specific rules that few consumers review and even fewer understand, said privacy experts.
"People are being duped into giving away a whole lot of information that maybe somebody ought to ask us about first," said Dorothy Glancy, a Santa Clara (Calif.) University law professor who studies privacy and transportation. "It seems to me you ought to get a choice."
The Internet system used by Ford, which last week announced greater integration with the popular music app Spotify, relies on a user?s smartphone to connect with wireless services.
The integration between car and smartphone means that some vehicle data can be made available to developers through an open Internet platform, allowing for a new generation of apps that draw on the information, said Ellis, the Ford technologist who heads its developer program.
The privacy policies of app makers would govern how an individual?s personal information can be used, Ellis said. "We assume that you?re comfortable with whatever privacy policy that app has."
Also in Barcelona, General Motors announced plans to install high-speed wireless connections on all of its vehicles beginning with the 2015 model year, in partnership with AT&T. The new system will augment OnStar, which long has provided some GM customers with directions, emergency assistance and help recovering stolen cars.
One of the prototype vehicles on display here, a dark blue Cadillac ATS sedan, was outfitted with OnStar, streaming video, music apps and cameras installed aimed at both the interior and exterior of the car. In demonstrations, one of the car?s interior cameras took short video clips of occupants that were incorporated in animated sequences broadcast on the dashboard video screen.
Stefan Cross, an executive with public relations firm Weber Shandwick, which was assisting in GM?s announcement of the new technology, said one possible feature would alert owners by text messages if their cars are bumped or hit. Owners might then be able to activate the exterior cameras remotely for immediate visual reconnaissance in the aftermath of an incident.
"It allows somebody to stay connected to your car even if you?re not in it," he said.
Cross said GM would protect the privacy of its customers, even as the volume of data increases. "We have that data. We?re just not prepared to release it to third parties."
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Source: http://www.sltrib.com/sltrib/money/55961771-79/data-privacy-information-car.html.csp
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This week, we have searched the nation for great Computer & Technology jobs that can be done from home. These jobs range from computer repair to website development to Internet security positions.
Computer and IT jobs involve building or operating computers and peripheral equipment to process business, scientific, engineering or other important data.
In celebration of the many different opportunities among the computer and technology fields, we bring you 10 great telecommuting Computer & Technology jobs at FlexJobs.
Job Title: Microsoft IT Consultant [Level 2-3]
Type & Location: Flexible Schedule, Telecommuting ??? NJ, New Brunswick, NJ, Jersey CIty, NJ, or Work from Anywhere, or Northeast, or US National
Industry: Virtual Admin, Computer & IT, Technical Support, IT Consulting
?Flexible, telecommuting positions available for level 2 IT technicians. Requires ability to troubleshoot Windows 7. 30-40 hrs/wk.?
Type & Location: Telecommuting ??? ???? Louisville, KY
Industry: Computer & IT, Web & Software Dev, Consulting, IT Consulting,SQL
?Responsibilities include designing, developing, documenting, and maintaining applications and providing support for application architecture. 4 years Presentation Tier/Web Development knowledge/experience required. Full-time, virtual position..?
Type & Location: Telecommuting ??? US National
Industry: Computer & IT, Web & Software Dev
?IT professional will manage service level expectations, recommend improvements to processes, manage capacity planning, monitor workflow, and provide analysis of data management. 2+ yrs relevant exp required. Telecommute. ?
Type & Location: Telecommuting ??? ??? Tucson, AZ
Industry: Computer & IT, Analyst, Engineering
?The Infrastructure Management Senior Analyst will be responsible for designing and implementing new and existing system requirements per client needs. UNIX and software installation experience required. Full time position. Telecommuting option.?
Type & Location: Telecommuting ??? ??? US National
Industry: Consulting, HTML, Computer & IT, Online Marketing, JavaScript
?Senior Consultant will resolve technical issues with website optimization plans, document client business requirements, & manage client engagements. Must have 5 years of online marketing or user interface design experience. Telecommute.?
Type & Location: Telecommuting??? ??? US National
Industry: Computer & IT, Education & Training, Teaching, College & University, SQL
?Information Technology Course Mentor will serve as a subject matter expert, help students develop course competencies, & answer students? questions. Must have a master?s degree in information systems or computer science. Telecommute. ?
Type & Location: Telecommuting ??? ??? Arlington, TX
Industry: Analyst, Computer & IT
?Candidates must have 2+ years of information security experience, CCNA and Security+ certifications, and networking knowledge for the full time position with telecommuting potential. Monitors IT defense perimeters and solves system issues.?
Type & Location: Telecommuting ??? ??? Plano, TX
Industry: Computer & IT, Consulting, Project Management, IT Consulting
?Project management professional with IT service management and data center infrastructure management experience desired for a contractual position. Monitors service delivery, identifies solutions, and plan IT services/activities..?
Type & Location: Telecommuting, Freelancing Job?? Seattle, WA, or US National
Industry: Education & Training, Computer & IT
?eLearning Instructional Designer/Developer will update & create modules that include videos, animation, voiceovers, & quizzes. Must have 5 years of experience. One onsite meeting is required (paid travel expenses). Telecommute.?
Type & Location: Telecommuting??? ??? ?MA
Industry: Computer & IT, Auditing, Manager
?Develop global Software Asset Management program. Manage staff of 4. Must have a bachelor?s degree & 5 years of software license compliance experience (enterprise software experience preferred). Telecommute. ?
Also, keep in mind as with most things this site / Info is not free. They want you to "become a memeber" to be able to apply, but sometimes with some searching you can find the same job on another job site.
The cost of membership is not bad, but when you can Free is better.
via:? flexjobs
Source: http://sherman-on-security.blogspot.com/2013/03/10-great-computer-and-technology-jobs.html
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Path, the eye-candy filled semi-private social network app for iPhone and iPad, has updated to version 3.0. New features center around messaging, which allows you to communicate directly with a specific friend, rather than posting things for all of them to see. They've also added stickers, or little graphics you can send via messaging, and store to buy stickers. That's right, Path's way of asking you to tip the service, if you like it, is through $1.99 sets of cutesy pics.
The sticker sets are made by well known artists, like the Iconfactory's Dave Lanham, and each set has a score or so of stickers.
As to the rest of it, it remains as it ever was. Meandering and mixed. The user interface is gorgeous but the user experience is flummoxing. For an app called Path, it's ironically unclear how to move through it. Messaging is even worse. In my brief test, half the messages I sent were unintentional. The interface was fantastic, but I ended up sharing my location -- something I regard as highly private -- and stickers totally by accident.
Path sent them as I browsed them. That's bad behavior. I should be able to tap something, change my mind, tap something else, then only send it when and if I hit the actual Send button. Otherwise, why have a Send button at all? That lack of control makes it unusable to me.
If you've tried it out, let me know what you think. Are you all in on Path, and if not, does the messaging or stickers pull you in more, or send you running even further?
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Source: http://feedproxy.google.com/~r/TheIphoneBlog/~3/rCo_nElNVxw/story01.htm
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Consumers can now transfer Microsoft Office 2013 registrations from one machine to another. Sort of.?
A Microsoft Office logo is shown on display at a Microsoft retail store in San Diego in this file photo from 2012.
Reuters
EnlargeEarlier this year, Microsoft launched?Office 365, an updated version of its venerable software package. The release was pretty well-received. But it came with one very big catch: Consumers could only install the software on one machine (unless you purchased the expensive?Home Premium or University versions of Office 365, which did allow five and two transfers, respectively).?
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The only exception was if your computer crashed under warranty, in which case, presumably, you would have to show that warranty to Microsoft in order get the free transfer. Unsurprisingly, this policy did not make consumers very happy, and frustrated comments quickly piled up on the Office blog.?
"The licensing changes are ridiculous and anti-customer friendly," one user wrote. "In [whose] mind does it make sense to permanently attach a license to a computer, instead of to a user?"?
Microsoft weathered the criticism for a few weeks, and then today, it announced it would revise the transfer policy for Office.?
"Based on customer feedback we have changed the Office 2013 retail license agreement to allow customers to transfer the software from one computer to another," Microsoft's Jevon Fark wrote in a blog post. "This means customers can transfer Office 2013 to a different computer if their device fails or they get a new one. Previously, customers could only transfer their Office 2013 software to a new device if their PC failed under warranty."?
Note that Microsoft is not allowing unlimited transfers. It is only saying that if your computer crashes, and is consigned to the great scrapheap in the sky, you'll be able to download Office to your new machine. Well, it's a start.?
Of course, as Ed Bott of ZDNet notes, Microsoft has actually been through something like this before.?
"Microsoft tried a similar tactic with Windows Vista in October 2006," Mr. Bott writes. "The original license agreement imposed a new?limit of one transfer on retail copies of Windows. At the time, I called it 'a?sneaky change in Windows licensing terms.' After a similar outcry from Microsoft customers (a Microsoft executive acknowledged having received 'lots of e-mail and other feedback' on this issue), Microsoft rolled back the changes and?restored the original license terms?less than a month later."?
For?more tech news, follow us on?Twitter @venturenaut.
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RelayRides founder and chief community officer Shelby Clark announced today that he is leaving his day-to-day role with the company, but will remain on the company's board of directors. The move comes as the company has added and promoted a bunch of executives with more operational experience, and as Clark is looking to get back into founder mode and start something new.Source: http://feedproxy.google.com/~r/Techcrunch/~3/bEO7ge1EOZg/
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