MAGNETIC REFRIGERATOR NEEDS NO ELECTRICITY
The invention will allow for refrigerators to replace existing electric refrigerators in homes and businesses with a fully environmentally friendly power source. Although the first prototype will not be ready until 2010, the project’s researchers say the appliance’s cooling cycle efficiency will be 60 percent greater than that of conventional refrigerators.
The new method uses opposing magnetic fields to increase the temperature of the materials employed. The heat energy is transported through a non-volatile fluid, such as water, and then thermodynamically reversed to a cold temperature. The scientists have already been able to cool a 20° C room to 11°C using the new technology.
‘It probably isn’t realistic to believe that magnetic cooling technology will be immediately available for consumer use, especially as refrigerator manufacturers have brought prices down so much in the past few years,’ said Christian Bahl, one of DTU’s project researchers.
But Bahl said another of the magnetic refrigerator’s advantages is that it is silent.
‘So it will likely be first used in various niche areas, such as places where a quiet environment is an important factor.’
Although magnetic cooling is not in itself a new research field, the DTU scientists were the first to use the technology in an actual physical setting to cool room temperatures.
The Copenhagen Post
Utilities: Automatically Refresh Any Web Page with Page Reboot
Keep an eye on that eBay auction in its closing minutes automatically with Page Reboot, a web service that refreshes a given web site every 30 seconds (or any interval you set). Similar to the ReloadEvery Firefox extension, drop the URL into Page Reboot's refresh box, set the refresh interval (in seconds) and go. A bookmarklet version is also available.
Out-of-Context Ads Prove Effective
Augustine: it's not that the "out-of-context" ads are effective; it's more like it is no less effective than ads placed in-context because both kinds are ineffective. When users want to find something, they will look for it. Any other time, they will ignore it. So no matter where the ad is placed, dismally low click rates will still be observed.
Source: http://www.adweek.com/aw/national/article_display.jsp?vnu_content_id=1003647231
September 27, 2007
By Brian Morrissey
|
NEW YORK New research casts doubt on the long-held belief that advertising is most effective when placed near content related to the product.
Yahoo! and MediaVest recently studied a group of consumers passionate about a particular subject area. Product ads displayed out of context had roughly the same impact on brand preference as identical placements shown next to related content.
Yahoo! asked self-identified food lovers to rate various brands, including the single-serve gourmet coffee product Tassimo. Brand affinity increased 26 percent among those shown the ad on a Yahoo! Food page, and 21 percent among those shown the same ad on a Yahoo! News page.
While the finding was a small part of a wide-ranging study, it suggests some softness in the long-held belief that ads shown in context are more valuable than those seen out of context.
This becomes a key issue moving forward: With new targeting tools, it is easier than ever to find specific audiences, such as foodies, wherever they are online, rather than only on food-related sites.
"Targeting the right people is more important than the content," said Jim Kite, president of connections research and analytics at MediaVest, part of Publicis Groupe.
The study supports earlier research by behavioral targeting companies like Tacoda and Blue Lithium. A Tacoda study in late 2005 found that users actually noticed out-of-context placements based on behaviors more than in-context placements. And according to an Oct. 2006 study by Blue Lithium, out-of-context, behaviorally targeted ads yielded higher conversion rates, though fewer clicks.
The findings should lift the spirits of companies like Yahoo! and AOL that are busily reinventing themselves, relying on their ad networks to give them added reach. Yahoo! has inked a deal to buy Blue Lithium; Tacoda is now part of AOL. With their portal sites serving as gateways, both companies hope to use their network assets to target ads to people with specific interests once they leave the portals for other online destinations.
For the most part, in-context ad placements are priced higher than those shown out-of-context with targeting information.
The study is notable because it gauged the most valuable customers: those passionate enough about subjects to spread messages—including brand messages—among their peers.
The study estimates that, depending on the category, 17-31 percent fall into the hyper-engaged consumer category dubbed, "Passionistas." Fifty-two percent are more likely than average consumers to recommend a product. It's no surprise that ads imparting some knowledge and/or added value on subjects of interest were found to have the greatest appeal.
"If a brand aligns with a passion, it doesn't matter where the audience is," said Edwin Wong, director of consumer insights at Yahoo!.
Useful Modding: Scientists Hack CD Player, Transform It into Lab Scanner
When researchers at the Universidad Politécnica de Valencia needed a lab scanner, but didn't have the cash to pay for it, they didn't panic. Instead, Angel Maqueira and his colleagues bought a bog-standard CD player &mdash and hacked it, saving themselves a potential $70,000 in the process.
By soldering two additional light sensors inside the CD player, and then using software, the researchers were able to control how the device "played" a disk. The substance to be analyzed (in this case, the team was trying to detect traces of three different pesticides in various samples) was then placed on a normal compact disc, and inserted into the machine.
While the first light sensor identified where the sample was on the disc, using black marks on the edge of the disc, the second analyzed the sample itself, measuring the amount of laser light that was able to pass through the disk. Normally, discs reflect around 30 percent of the laser beam onto the reading head, while the rest passes through.
The sample, half a millimeter in size, was treated to produce dye or silver that was inversely proportional to the amount of pesticide in the sample. Using the modded CD player, they could detect pesticide levels as low as 0.02 micrograms per liter just by seeing how much laser light passed through the disc to the second sensor.
While it may not be as accurate as genuine lab sensors, which can cost between $42,000 and $85,000, the hacked CD player is accurate enough for many laboratory tasks &mdash some experts think the cheap and cheerful device would work wonders in developing countries, helping the fight against malaria, for instance. And the shorter wavelength lasers of Blu-ray and HD DVD technology will make the process even easier. [New Scientist]
Pure Digital announces million camcorder giveaway for non-profits
Researchers tout advances in development of pure white LEDs
Researchers at the Indian Institute of Science are making some fairly bold claims about their latest advance in the realm of white LEDs, boasting that they are now getting closer to the "Holy Grail of the illumination industry." That, they say, is a white LED that produces a pure white light suitable for everyday use (as opposed to the "warm white" LEDs used in pricey bulbs like the one seen here). The big advance here, it seems, is the development of the first LED based on a "new phosphor from semiconductor nanocrystals of cadmium sulfide mixed with manganese." While we're admittedly not entirely sure what all that is, the researchers claim that the result is an LED that produces a stable and constant shade of white light, which is "superior in overall performance" to previous white LEDs. They're apparently not fully satisfied with the results just yet though, and are reportedly working to boost the efficiency of the LEDs to make them more suitable for everyday applications.
D-Link gives DSM-520 access to hundreds of online TV channels
Evidently, loosing the DSM-750 Extender for Windows Media Center just wasn't enough for D-Link, as the firm seemingly felt the need to give loyal (and to-be) owners of the DSM-520 Wireless HD Media Player a nice bonus. Starting today, buyers of the aforementioned digital media adapter will have access to "more than 200 online channels," as the unit can now take advantage of active-TV technology. The service reportedly "allows easy access to internet video and entertainment sites with a remote control," and it also uses a "content aggregator developed by MediaMall Technologies." Some notable channels include Comedy Central, CinemaNow, Google Video, Movielink, ROOtv Music Videos, Akimbo, MTV, Musicmatch, Napster, VH1, ESPN and FOX Sports, and there's also international content out there for those willing to branch out. The expanded DSM-520 should be shipping momentarily for $249.99, and existing owners can snag the update gratis on October 4th.
A Chat with Konarka Co-Founder Howard Berke
Howard Berke, the co-founder and executive chairman of the board for solar polymer company Konarka, stepped down from his role as CEO in June, but we still found him out manning the company booth at the Solar Power 2007 convention this week. We chatted with him about the Lowell, Mass.-based company’s plans for commercialization — Berke says the first products won’t likely hit the market until the second half of 2008.
A lot companies developing thin film and other new solar technologies are struggling to move into the production phase, and companies like Miasolé and Nanosolar continue to raise funding to take that next step. Konarka was founded in 2001, and built with $60 million from venture capital firms 3i, Draper Fisher Jurvetson, Good Energies, NEA, Partech and Vanguard Ventures. Konarka is also reportedly seeking to raise another $40 million in a late stage of venture funding and while the company won’t comment on that report, they won’t officially deny it either.
Konarka’s technology is different from some of the other thin film startups and it is based on organic semi-conducting polymers. Berke says the technology can be manufactured at a lower cost — their target cost is $1 per watt — it is more environmentally friendly, and can be printed on a variety of lighter-weight materials. Thin film technologies like cadmium telluride (CdTe) and copper, indium, gallium and selenium (CIGS) can have potential safety hazards and some higher costs. At the same time, Konarka’s efficiency rate runs between three and five percent, which is less than many standard solar efficiencies.
All these qualities make the technology suitable for applications such as packaging with a little solar power added in. Berke uses soft drinks as an example: Say there’s two soft-drink brands in a store, one with packaging that has lights blinking and the other without — which one are you more drawn to? Another example would be a cereal box solar-powered electronic game — since the materials aren’t hazardous, he says, they can more easily be disposed of.
OK, a little wasteful, but we get it. The company is also looking at applications in clothing, handbags, toys, cell phones, laptops, windows, traffic signals, and smart lighting, among others.
Scientists Create the First Super-duper "Pure White LED"
The American Chemical Society is claiming that the "holy grail" of the LED world has been reached. A pair of Indian Scientists have created a pure white LED. No longer will we have to suffer with odd blue- or yellow-like white LED's. The method used to achieve the white color was so blatantly obvious, they used "phosphors made from semiconductor nanocrystals of cadmium sulfide mixed with manganese." The scientific duo is currently attempting to raise its production consistency so that it can be brought to the masses. [Physorg via ACS]
Cellphones: Sling Player Now Available on Nokia N95
We knew it was just a matter of time before the HSDPA-enabled Nokia N95 would score itself a Series60 friendly Sling Player, and lo, here it is. As you can see in the gallery, you initially access commands through menus, but the trick is to set your favorite commands along with your favorite channels. In case you were wondering, you can't use the transport keys for the N95 video player. One of these days, that would be nice. But as hand model Dave Zatz was showing us, you can do some quick maneuvers using keypad hot keys. Stay tuned for our detailed review. [Sling Media]
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