Smart clothes could take photos

The researchers stretch out large fibres to make thin threads

Clothes could one day take snaps of everything happening around whoever is wearing them.

US researchers have made smart fabric that can detect the wavelength and direction of light falling on it.

The research team has found a way to accurately place sensors in each fibre and co-ordinate the electrical signals they send when light falls on them.

The results were a step towards "ambient light imaging fabrics" said the researchers.

Led by Dr Yoel Fink from the Massachusetts Institute of Technology, the researchers have extended earlier work that placed sensors in relatively large polymer fibres.

Dr Fink and colleagues found a way to stretch the 25mm strands of polymer into much thinner fibres while maintaining the relative positions of the sensors.

This earlier work has led to the creation of very long and flexible light and temperature sensors that may find a role in smart fabrics for soldiers or those working in hostile environments.

In their latest work, described in a paper in Nano Letters, these thinner strands were woven into a 0.1m square section of fabric. The careful creation of the fibres and positioning of the light-sensitive elements meant that the team knew which signals were being sent by which sensors.

This enabled the team to reconstruct, albeit crudely, an image projected onto the small square of fabric. The researchers said their work was an "important step" towards finding ways to get many nanoscale devices working together.

Source: BBC news

Chasing the Toyota Prius' 50-mpg nirvana

by Martin LaMonica

At this point, I don't feel like I need to burnish my eco-credentials, given that I write for CNET's Green Tech blog every day. But when it came to buying a car, I got the iconic, even cliched, 2010 Toyota Prius.

Having driven almost 2,500 miles on it so far, I like it, although I have not yet been able to get the advertised 50-plus miles per gallon when I go around town, which is the bulk of my driving. But it's early still, I tell myself, so maybe the Prius can show me the way. (See also CNET's review of the 2010 Toyota Prius.)

2010 Toyota Prius photos

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Buying a hybrid was not at all my plan. My wife and I were generally content with a 10-year-old Corolla that got us from point A to B with good mileage. As you can tell, fuel efficiency and reliability are high on my wish lists, not luxury features. In fact, what I really wanted to do was hold out for a plug-in electric vehicle.

But a few weeks ago, our well-maintained sedan was totaled by a teenager in an SUV (no serious injuries, thankfully). That meant I needed to get a new car--fast. We went from accident to test drive to transaction in about a week since we needed a new car before we left for a long-planned vacation. Nothing like a deadline to focus the mind.

I was surprised to see how few hybrid options there are. Certainly the Honda Insight was tempting and early reviews were positive. But reviews also said that space in the back seat isn't great, which was a priority for us, while the new Prius improves on interior space.

I also thought of the Ford Fusion hybrid, which I drove this spring. One advantage was the tax rebate I would have gotten for buying a fuel-efficient American car. It gets over 40 miles per gallon in city driving and I liked driving it a second time--it had a comfortingly familiar look and feel, both inside and out, even though it's a hybrid. But with the bigger battery, the trunk didn't seem very roomy and you can't push down the back seats for big loads.

Next stop was the Toyota dealership. The base price of the new Prius is a few thousand dollars higher than that of the Insight but less than the listed base of the Fusion. We took the Prius for a spin and were pleased.

There's not exactly a waiting list for the 2010 Prius, but each car is basically spoken for before it arrives, at least in the Boston area. Our sales guy had one coming in. We grabbed it. Did I mention we were in a hurry?

The day after delivery we started our long drive for vacation. Gas mileage for our roughly 2,000 miles of highway travel in total was about 51 miles per gallon. A limited sample of city driving (less than 100 miles) has me getting in the middle to high 40s.

Different state of mind
The biggest change with driving a hybrid is the feedback system. The 2010 Prius has a few different display options. It's interesting to know what's going on under the covers--how the gasoline engine, generator, and battery coordinate to maximize your mileage.

But so far what I've ended up using is the Eco dashboard, which tells you when you're driving just on the battery and when going out of the super-efficient zone. The big lesson here: don't accelerate aggressively. Picking up speed slowly is the key to fuel-efficiency nirvana, the Prius tells me.

What a difference from my old cars. I've always driven a stick shift, which means a direct sense of controlling your car's functions: put it in gear, hit the accelerator, and you're in control.

The Prius is fly by wire. You tell the computer what to do and it controls the car. The 2010 model has a few modes that you can put it in: all EV, which only works up to about 20 miles per hour; the Eco mode; and the Power mode.

I've used the Power mode to jump onto highways and it works fine. The Eco mode makes it harder to push on the accelerator so my preference is to only use that with cruise control on the highway. With my day-to-day driving, I've ended up not picking a specific mode and just eyeing the dashboard for feedback.

Show me the way, oh eco-indicator. The Hybrid System Indicator coaches you on how to sip gas.

(Credit: Corinne Schulze/CNET)

For a far more thorough run-through, I suggest this review by my colleague Wayne Cunningham at CNET Car Tech. If you want to know how the hybrid system works under the covers, check out this video from the CNET Green Show.

Of course, there's the cost of the car. I ended up with a relatively low-end model, which is fine because I don't rely on GPS or need a solar moonroof (the solar panel powers a fan to keep the car from heating up in the sun.)

I don't drive a whole lot of miles per year so I wasn't going to get out a calculator and run an ROI analysis on buying a Prius with 48/50 miles per gallon mileage versus something else.

Hybrid technology just makes sense and it's a feature I wanted, just like getting video on my digital camera. Why should my car be burning gas when it's standing still? And I think it's brilliant that I'm recouping energy for my battery when I'm decelerating or hitting the brake.

Now when I drive around I notice the other Priuses. And I keep wondering, are you getting over 50 miles per gallon? Any tips you can share?

Source: Cnet news

Call for limits on web snooping

Tim Berners-Lee started the web to help scientists communicate

Governments and companies should limit the snooping they do on web users.

So said Sir Tim Berners-Lee, inventor of the world wide web, who said that growing oversight of browsing could have a pernicious effect.

A greater part of the value of the web lay in the lack of constraints on what people could do with it.

He also warned that attempts to censor what people could say or what they could do online were ultimately doomed to failure.

Open triumph

"When you use the internet it is important that the medium should not be set up with constraints," he said.

The internet, said Sir Tim, should be like a blank piece of paper. Just as governments and companies cannot police what people write or draw on that sheet of paper so they should not be restricted from putting the web to their own uses.

"The canvas should be blank," he said

While governments do need some powers to police unacceptable uses of the web; limits should be placed on these powers, he said.

It's a wonderful experiment and I hope it will have consequences for the way TV is produced in the future Russell Barnes, Digital Revolution producer Find out more about Digital Revolution

If people know that where they go online and the terms they look for are under scrutiny it could have all kinds of pernicious effects, he warned.

Repressive regimes, such as China and Iran, that work hard to limit what people can do online would struggle to maintain that control over time, he said.

"The trend over the years is that the internet in the end goes around censorship and openness eventually triumphs," he said. "But it is by no means an easy road."

Sir Tim made his comments during a speech at an event that helped to launch the BBC Two series Digital Revolution.

The four-part series aims to explore the history of the World Wide Web and generate debate about how it is changing the way people live their lives. It aims to debate how the web is changing the nation state, how it affects identity, freedom and anonymity.

Over the next eight months as the programme is being produced, viewers will be encouraged to get involved by sending in questions for interview subjects and being able to produce their own clips using the rushes generated during filming.

Social media researcher and broadcaster Aleks Krotoski will present the series of programmes.

Source: BBC news

Mixed results for green IT goals

The Greening ICT Strategy requires 40% recycling by 2010

A majority of public sector employees do not know about environmentally friendly IT targets set out in government's Greening ICT Strategy.

The strategy calls for government IT to be carbon neutral by 2012, with office carbon emissions down 11.5% by 2011.

One of the commissioners of the report says there are scattered trends toward compliance with the strategy.

However, a survey of IT managers in the public sector showed 60% did not know there were any targets to aim for.

The report, titled "The Path to Green Government", was produced by environmental charity Global Action Plan and commissioned by networking giant Cisco.

It is estimated that information and communication technology (ICT) accounts for one-fifth of the Government's carbon emissions. The Greening ICT Strategy was intended to put the government in a leadership role in the sustainable use of ICT.

A large proportion of carbon emissions can be blamed on the manufacture of new equipment, so a principal focus of the initiative is to make the best use of existing equipment.

However, there is more to the plan once procurement is slimmed down, according to Cisco's head of public sector Neil Crockett.

"There is another, much bigger debate about how ICT can enable other things to happen, like building management, travel reduction, flexible working," he said.

'Pockets of excellence'

The Global Action Plan study was conducted by direct surveys of ICT managers in the public sector - local and national government, education, healthcare and so on - as well as a questionnaire in the magazine Computer Weekly.

Some 60% of respondents said that they were unaware of the Greening ICT Strategy, and among those who were aware, nearly one-third said that they had made no changes to their own ICT usage and procurement, and had no plans to make any such changes.

The problem, according to Global Action Plan director Trewin Restorick, is poor collaboration and knowledge sharing across the sector.

government electricity usage is continuing to rise, and it is likely that one of the big reasons for this is the proliferation of computers, laptops, chargers, lobby televisions and the air conditioning of server rooms Rebecca Willis, Sustainable Development Commission

"What we saw was pockets of excellence, areas where the public sector is making both cash savings and carbon savings through smarter use of ICT," he told BBC News.

"But what we discovered was that those pockets of activity tended not to be part of a wider strategy within the public sector. They were very much piecemeal initiatives, which suggests they were being driven by keen individuals."

One straightforward route to knowledge sharing is that between IT managers and those who pay for the energy that the equipment consumes; more than two-thirds of respondents said that they were neither responsible for paying for the energy, nor did they see the bill.

Less than half had calculated their department's "carbon footprint".

"For an ICT manager, if they're not paying the energy bills - which are both volatile and going up - they have no interest in knowing what the long term impact of the product is," he said. "So you get managers buying stuff without thinking about utilising the assets they've got."

While the longer term goal to ameliorate the effects of climate change are a driving force for compliancy, in 2010 the Department for Environment Food and Rural Affairs' Carbon Reduction Commitment scheme will come into effect.

Under the scheme, each large private sector business and public sector organisation will tally up its carbon emissions, with a price tag of 12 pounds per tonne of emissions. Organisation will be placed into league tables; depending on where they fit, they will or will not get the money back.

The concern is that public sector money can, if the sector performs badly, be siphoned off into the private sector - a loss both in monetary and in ideological terms.

"'Health service money goes to Tesco's' is not a great headline," said Mr Restorick.

Groundswell

Catalina McGregor, government deputy champion of the Cabinet Office's CIO/CTO Council Green ICT Delivery Group, said a report from her office due for release in late August will comprehensively detail how each department is doing in unprecedented detail, from intelligence departments all the way to museums.

While its results are mixed, she told BBC News that signs of progress were widespread and that Mr Restorick's assessment may be a bit wide of the mark.

Lots of firms spend money to keep their servers cool

"I'm a little gun-shy to say that folk aren't working well together, because they are," she said. "It's very rare that something central is taken up by local [offices] to this extent on a voluntary basis. It's true that there are no 'big sticks', no incentives, no budgets; but there is a groundswell of support for the green ICT programme."

Rebecca Willis, vice chair of the government's green watchdog the Sustainable Development Commission, pointed out that despite commitments from government, signs of overall change were still lacking.

"The Greening ICT Strategy is an encouraging step towards making government IT more sustainable," she told BBC News.

"However, government electricity usage is continuing to rise, and it is likely that one of the big reasons for this is the proliferation of computers, laptops, chargers, lobby televisions and the air conditioning of server rooms. It's clear that ambition levels need to be raised."

Source: BBC news

Comcast to offer 4G wireless broadband service

by Marguerite Reardon

Comcast is getting into the wireless broadband business by bundling Clearwire's 4G wireless service with its existing broadband products.

The largest cable operator in the U.S. will launch the new service in Portland, Ore. And it will expand the service to other Comcast cities later in the year, including Atlanta, Chicago, and Philadelphia.

(Credit: Comcast)

Comcast invested in the new Clearwire in 2008, along with Google, Intel, Time Warner Cable, and Sprint Nextel, which gave Clearwire its 2.5GHz spectrum. Clearwire's plan has been to roll out its service nationwide. The service is now up and running in a few cities, including Atlanta, Baltimore, and Portland, Ore. And the company has plans to roll it out to 80 markets by the end of the year.

Some of the cities where it plans to launch the service include, Las Vegas, Chicago, Charlotte, N.C., Dallas/Ft. Worth, Honolulu, Philadelphia, and Seattle. And it plans to launch the network in cities such as New York, Boston, Washington, D.C., Houston, and the San Francisco Bay Area, in 2010.

Clearwire is using a technology called WiMax, which offers faster speeds than current 3G wireless technologies, but offers wider coverage than other high-speed wireless technologies such as Wi-Fi. Clearwire claims that it can provide up to 4Mbps for downloads and 500 kbps for uploading, which is more than double what consumers can expect using a 3G wireless connection.

Comcast will be selling 4G wireless access as part of an Internet bundle to Comcast subscribers. To entice new subscribers, Comcast is offering the new 4G wireless with its 12 Mbps download cable modem service, plus a free 802.11g router for $50 a month for the first 12 months.

The data card used for the 4G wireless, which fits into a laptop, costs $99. But subscribers who sign up for the package with a two-year commitment get the data card for free.

After the first 12 months, subscribers will then pay $43 per month for the 12 Mbps broadband service and $30 extra per month for 4G wireless service. The 4G wireless service is only available in Comcast's cable territory, but subscribers who travel to other cities where Clearwire's network is operational will be able to access the network at no additional cost.

New customers signing up for Comcast's triple play bundle of TV, phone, and Internet can add the 4G wireless component for $30 extra a month. So with the introductory price of $99 a month for the first year, the total would be $130 a month. After the first year, that bundle increases to $130 per month, so it would cost subscribers with the 4G wireless service $160 a month.

For subscribers who want more ubiquitous coverage, Comcast is offering a 3G/4G service that provides wireless connectivity on the Clearwire 4G network when it is available and on Sprint Nextel's 3G wireless service in other areas where 4G is not available. The cost of this service is an additional $20 per month.

Existing Comcast customers can add the new service for $30 more a month to their existing packages. And they can add the nationwide access with 3G access for $20 more per month.

Comcast has had its eye on the wireless market for quite sometime. The company bought wireless spectrum in the Federal Communications Commission's wireless spectrum auction in 2006. So far, the company hasn't said what it plans to do with that spectrum. But it has at least 10 years to decide, after which time the FCC could ask for the licenses to be returned.

Comcast has also worked with other cable operators to form a joint venture with Sprint Nextel in 2005. This joint venture was supposed to allow Comcast to bundle its broadband, TV, and telephony services with Sprint's wireless services. But the partnership never really got off the ground.

This time, Comcast thinks it has the right service package that will finally offer consumers a compelling product mix. The company is interested in not only using the service to help it win new customers but to also help it keep existing ones who may be tempted to defect to phone company competitors.

"This is really our first entree into expanding our in-home broadband service in combination with a wireless Internet service," said Catherine Avgiris, the company's senior vice president and general manager of wireless and voice services. "We are trying to get those consumers, who may not have chosen Comcast's broadband services in the past, to see that they can get the best and fastest in-home and wireless service from Comcast. But we are also trying to make sure we can keep the customers we do have from going to a competitor."

While it's clear that Comcast is using this new service to compete against its phone rivals, namely AT&T and Verizon Communications, it will also be competing against its partners Clearwire and Sprint Nextel, which will also be selling the same WiMax service to consumers.

Clearwire's service called Clear starts at $20 per month for in-home wireless broadband. And its mobile Internet plans start at $40 per month. Customers can also get a day pass for $10. The company also allows customers to add voice service to their in-home package for $25 per month.

Sprint is also offering a 3G/4G wireless service for people living and traveling regularly to places with 4G wireless coverage. For about $20 more a month, Sprint wireless data customers can get access to its 3G network plus the 4G Clearwire network for $80 per month. Sprint's regular 3G wireless data service costs about $60 per month.

AT&T and Verizon haven't included their 3G wireless data services into their in-home broadband and TV services, but the companies have been offering special deals for wireless customers. And both operators have announced Netbook offers where they subsidize the cost of these mini-laptops in exchange for a two-year service commitment. AT&T has also given free Wi-Fi access for its more than 20,000 Wi-Fi hotspots around the country to its broadband customers as well as some smartphone users.

AT&T isn't the only Wi-Fi provider that could compete with Comcast's 4G wireless service. In cities, such as San Francisco, there is already quite a lot of Wi-Fi in public places thanks to services like X. And in Philadelphia where EarthLink had deployed a citywide Wi-Fi network, Wi-Fi is still available for free in some locations.

Comcast isn't completely down on Wi-Fi. The company also offers a Wi-Fi solution in cooperation with Cablevision, a cable operator serving the New York area. The two companies are deploying Wi-Fi hotspots in train stations and on train platforms along the North East corridor from Philadelphia to New York City. The Wi-Fi access is free to Comcast and Cablevision broadband subscribers.

But Wi-Fi doesn't offer ubiquitous coverage. So these networks aren't the best answer for every consumer. But the success of Comcast's 4G wireless service is very much dependent on price. The company has priced the first year of the service extremely well, making it the hands down winner in terms of value for consumers. But it will be interesting to see if consumers are still interested in the service once the promotion is over.

The other potential downside to the service right now is that consumers will only get one USB laptop card per account. This might make it hard for families with multiple family members who want wireless broadband service outside the home. And this is also a problem for small businesses, which Comcast is also targeting with this service.

That said, Avgiris said that Comcast is working on a solution and will be offering multiple wireless cards for an additional cost. But the exact pricing of these cards and service hasn't been determined just yet.

Source: Cnet news