All Blog Posts from Tech Talk

November 3, 2010 3:52 PM

Laser Powered "Quadrocopter" Stays Aloft for 12 Hours

Law enforcement officials may be able to monitor crowds with low-flying cameras for more than 12 hours, thanks to what could be record-breaking laser beam powered technology.

Seen here is a quadrocopter, a small flying device that can carry a camera. In the past, such a device could fly for no more than about 20 minutes.

(Credit: Ascending Technologies and LaserMotiv)

Two companies, Germany's Ascending Technologies and Seattle's LaserMotiv, say they set a new standard for flying time for what's called a quadrocopter, a small electric-powered helicopter.

While the concept of a camera mounted on a quadrocopter has been around for some time, the companies said in a release today that until now, law enforcement had not been able to use them for more than 20 minutes.

But Ascending Technologies and LaserMotiv say they fashioned a one-kilogram quadrocopter called the "AscTec Pelican," which was powered by a laser beam and special photovoltaic cells and was able to stay aloft for about 12 hours and 27 minutes.

The principle behind the laser and photovoltaic cells is known as power beaming, and in this manifestation of the technology, the two companies set up a directed laser beam and coordinated it with a high speed tracking system that is designed to power objects like a quadrocopter over distances of as much as several kilometers. The AscTec Pelican was also outfitted with a battery pack that allowed the quadrocopter to fly autonomously for up to five minutes.

This technology is similar to one being proposed by a startup known as Escape Dynamics--albeit at a much different scale. Escape Dynamics hopes to be able to power a full-scale rocket launch with ground-based beamed microwaves within seven to ten years. The system being used by Ascending Technology and LaserMotiv is obviously much less ambitious, though it is already working today. Indeed, the companies said that LaserMotiv was a 2009 NASA-sponsored contest known as the Power Beaming Competition.

This article originally appeared on CNET
Tags:
helicopter ,
laser ,
quadrocopter
Topics:
In The News ,
Tech Talk
  • Digg
November 3, 2010 2:53 PM

Facebook: Single Sign-On for Mobile Apps, Services

Mark Zuckerberg

Mark Zuckerberg addresses the media and analysts today in Palo Alto.

(Credit: Photo by Jessica Dolcourt/CNET)

If you use Facebook to "check in'' to your favorite restaurants or shops, you can now expect to see rewards and discounts from companies looking to drum up business and lure in loyal customers.

Facebook is looking to bridge online advertising with people's offline behavior as it announced a service called "Deals" on Wednesday. It's an extension of Places, the check-in feature the company unveiled this year. Rising with the explosive growth of smart phones, services based on people's location help them find coupons, earn quirky merit badges or simply share with friends where they are.

Read full post…

Tags:
zuckerberg ,
facebook ,
single sign-on
Topics:
In The News ,
Tech Talk
  • Digg
November 3, 2010 1:13 PM

Forget Cute; World's Smallest Frog Packs Poison Punch

(By Charles Q. Choi,, This story originally appeared on LiveScience)

(Credit: A. Rodriguez and M. Vences.)
The record-holder for the smallest frog in the world apparently makes up for its miniature size by packing a wallop of poison, research reveals.

With a body that's only 10 millimeters long, the Mount Iberia frog (Eleutherodactylus iberia) from Cuba currently holds the Guinness World Record for smallest frog.

Investigating these dwarf frogs is painstaking work, said researcher Miguel Vences, an evolutionary biologist at the Technical University of Braunschweig in Germany.

"You have to crawl on your knees and move leaf by leaf," Vences told LiveScience. "And when you discover one of these frogs, they usually jump away immediately so that you have to start all over again."

When Vences found his first specimen, he smelled a bitter odor and suspected it might be coated in toxic alkaloids. (Morphine and caffeine are alkaloids.)

"At the time I just mentioned this as a crazy and rampant speculation — I was sure it would prove to be wrong, and was even more surprised when my chemistry colleagues sent me the first results, stating they indeed had found alkaloids in the skins," Vences said.

Only four other groups of frogs in the world secrete defensive toxins onto their skin, including the infamous poison-dart frogs of Latin America. It remains uncertain precisely how deadly this new poison dwarf might be.

The researchers suspect these dwarfs evolved their tiny size to better prey on mites overlooked as meals by larger frogs. These arachnids possess alkaloids the dwarfs secrete on their skins. And so by consuming the poison, the frogs somehow reallocated the goods for their own use. It was only later the frogs might have evolved their brown, yellow-striped appearance — "such a contrasting coloration usually is found in poisonous animals, which use it to deter potential predators," explained researcher Ariel Rodriguez of the Institute of Systematic Ecology at Havana.

A variety of tiny frogs roughly 10 millimeters long can be found around the world. These poisonous new findings could shed light on why this dwarf became so tiny.

More Tech and Science Stories from LiveScience.com

"A more important question is probably why did the frogs not get even smaller?" Vences said. "In birds and mammals, who have to maintain a stable body temperature, you can understand why they cannot get smaller than a dwarf shrew or a tiny hummingbird — as the body surface relative to body volume increases as you get smaller, you are cooling more easily, so you need more energy to maintain your temperature. This only works to a certain size well above the 10 millimeters found in frogs."

However, frogs, being cold-blooded, do not need to maintain a stable body temperature.

"So what is the limiting factor? Is it ecological, that there is not enough prey available for frogs under 8 to 10 millimeters?" Vences speculated. "Is it developmental, some fundamental processes in the body, like producing eggs, not being possible in smaller frogs? Physiological, related to water loss? In these questions, I see the greatest challenge, and this is where studies of miniaturization of vertebrates will be able to provide data of more fundamental importance, far beyond the pure curiosity of just their dwarf size."

The scientists detailed their findings online Nov. 3 in the journal Biology Letters.

Tags:
frog ,
dwarf frog
Topics:
In The News ,
Tech Talk
  • Digg
November 3, 2010 11:02 AM

Facebook: Rethink Mobile as Social

Facebook event invitation (Credit: Facebook)

Join us Wednesday morning for live coverage of Facebook's mobile event, taking place at the company's headquarters in Palo Alto, Calif., at 10:30 a.m. PT.

I'll be there, along with CNET's mobile phone and software expert Jessica Dolcourt to bring you news updates and photos, as well as a hands-on if possible of whatever might be announced.

As usual, we'll be using Cover It Live to deliver the story as it unfolds. That means you can just bookmark this page and come back to it tomorrow, or plug your e-mail address into the form below, and get a reminder when it's about to start.

As for what to expect in the way of news, it could be anything from an updated version of the company's mobile application, all the way to the rumored (and denied) branded smartphone.

Related: Why a Facebook Phone may not be nuts


Tags:
mobile ,
facebook ,
facebook phone
Topics:
In The News ,
Tech Talk
  • Digg
November 3, 2010 10:48 AM

New Privacy Worry: Social Networks Vulnerable to Visual Trickery?

(By Stuart Fox, This story originally appeared on TechNewsDaily)

(Credit: Warner Brothers Studio.)

Leonardo diCaprio was right: Inception is not only possible, but it may be coming to social networking sites such as Facebook within the next three years. Through a combination of visual trickery and insidious psychology, some experts think corporations may soon begin to Photoshop product placement into personal pictures stored on social networking sites.

And due to the relationship between pictures and memories, the photo alteration may effectively place commercials into your waking mind.

By taking advantage of implanted memories, corporate product placement in photos on social networking sites could finally accomplish the much-desired -- but incredibly difficult -- goal of altering brand loyalty, said Aza Raskin, the creative lead on FireFox at Mozilla.

"That's a pretty low bar to set to hack some one's memory," Raskin told TechNewsDaily. "Technically, it's a very simple thing. I would not be surprised if, in the outside, within three years, someone's starting to do this."

A memory seed

The susceptibility of the human mind to the implantation of false memories is well-known, and experiments have already proven that targeted false memories can alter shopping patterns, said Elizabeth Loftus, a professor of psychology at the University of California, Irvine, and a specialist in false memories.

Using conversations and text in laboratory experiments, Loftus has used false memories to lower the amount people would pay for Disney toys by implanting the memory of a bad childhood experience with the character Pluto. In another study, Loftus convinced between 20 percent and 40 percent of subjects to pay more for strawberry ice cream after suggesting, falsely, that the subjects loved the flavor as a child.

"Some of the studies we've done have shown that you can alter memory and affect how much people like something, and how much people are willing to pay for something," Loftus told TechNewsDaily. "I could see this affecting consumer behavior."

Altering pictures of one's self would have an even more profound effect than seen in those studies, said Jeremy Bailenson, the founding director of Stanford University's Virtual Human Interaction Lab and author of the upcoming book "Infinite Reality: Avatars, Eternal Life, New Worlds, and the Dawn of the Virtual Revolution" (Harper Collins, 2011). Photos implant memory more powerfully than the speech and text used in Loftus' experiments, and nothing fools the human brain more than self-portraits, Bailenson told TechNewsDaily.

By cutting and pasting test subjects' faces onto different bodies endorsing a specific product, Bailenson has shown that self-endorsement not only carries more weight than endorsement by a celebrity or anonymous model, but that the brain automatically creates powerful false memories when faced with a counterfeit self-portrait.

"The human brain hasn't evolved to deal with a mirror image that acts autonomously," Bailenson said. "If the self is shown using a product that the self has never used, over time, the association between the self and the product remains, but the specific source of the association fades over time."

Real life inception

Since product placement within personal photos has greater value than simple commercials, memory-altering advertisements will cost companies far more -- and thus generate more income -- than a pop-up ad or magazine spread. To take advantage of that greater value, social networking sites may either begin selling ad space in our memories as a business model for themselves, or people may directly offer themselves up as a platform for advertising to make some cash, Raskin said.

More Tech Stories from TechNewsDaily.com

Alternatively, users could pay services to help them reach a positive goal through memory implantation. Studies have shown that people will imitate the behavior they see online representations of themselves engaging in. So, a company could help users lose weight by fattening or slimming past images of a user based on their diet in the present, Bailenson said.

However, even user-initiated memory alteration services such as voluntary advertising or the weight-loss plan run into ethical boundaries. Since both the user and the user's contacts view their social networking pictures, altered photos will manipulate the memory of all viewers, with or without their explicit consent.

"It is certainly a fine thing to set up for a person, but remember, all your friends are looking at it," Raskin said. "By doing microendorsement, you are exploiting all the people who know you, and you erode the value and trust of friendship."

So far, no company has performed social networking inception for profit. But once it starts, it may very well spread beyond simple advertising, and into the large-scale alteration of all manner of data for cosmetic, commercial or political reasons.

"It's a fundamental shift toward information about you becoming truth," said Raskin.

"We need to become careful about how and with whom we share that information, and whom we let change that information."

Tags:
product placement ,
photoshop ,
social media
Topics:
In The News ,
Tech Talk
  • Digg
November 2, 2010 4:50 PM

Smartphone Politics: Europe Rallies Behind Symbian Mobile Operating System

Symbian, the mobile operating system that's huge in Europe but an afterthought elsewhere, has received a boost from its friends at home.

Nokia C5-03, running Symbian OS

(Credit: Nokia)

Symbian has been declared "The Embedded Operating System for Europe" by a consortium of European countries and companies, who have agreed to invest a total of 22 million euros (about $31 million at last count), 11 million euros of which will come directly from the European Commission. The idea is the "development of next generation technologies for the Symbian platform," wrote Richard Collins, technology manager for the Symbian Foundation, in a blog post.

Despite a near-total lack of adoption in the U.S., Symbian is still the world's largest smartphone operating system. However, it has been on a steady decline for years as smartphone growth in the U.S. powered by the iPhone, BlackBerry, and now Android phones has drawn software developers in that direction.

Read full post…

Tags:
nokia ,
smartphones ,
symbian ,
eu ,
mobile operating systems
Topics:
In The News ,
Tech Talk
  • Digg
November 2, 2010 3:28 PM

Wow Videos of Hartley 2 Comet from NASA

In less than a couple of days, NASA's EPOXI mission spacecraft will make its scheduled - and much anticipated - flyby of the Comet Hartley 2. As it closes in on its encounter, the spacecract has been sending back batches of photos. And now NASA is releasing its first video of a couple of jets firing off the comet's surface over a 16-hour period.

The encounter will mark the fifth time that a spacecraft has been close enough to image the nucleus of the comet. It should be quite the show. Until then, enjoy these coming attractions.


Tags:
hartley 2 ,
expoxi mission ,
comet
Topics:
In The News ,
Tech Talk
  • Digg
November 2, 2010 2:35 PM

False Alarm: That's No UFO; That's Venus

(By Joe Rao, This story originally appeared on LiveScience)

Planetariums, observatories, weather offices and perhaps even police stations should be prepared to receive a bevy of inquiries during the next couple of weeks concerning a strange "UFO" that will soon be making appearances low in the eastern sky just before sunrise. 

Venus

(Credit: JPL/NASA)

The unusual lateness of sunrise may add to the confusion for skywatchers, since it coincides with the sudden arrival of the bright sky apparition. But there's no need to be alarmed.

That bright light in the sky is only the planet Venus, which returns to visibility Wednesday, Nov. 3.

This sky map shows where to look to spot Venus on that date.

Read full post…

Tags:
astronomy ,
venus ,
ufos
Topics:
In The News ,
Tech Talk
  • Digg
November 2, 2010 2:07 PM

Porn Maker Sues 7,098 Alleged Film Pirates

In a move sure to outrage both file-traders on BitTorrent networks and legal watchdogs, a well-known pornographer has filed a federal copyright suit against 7,098 individuals.

An adult-film accuses 7,000 people in a lawsuit of illegally sharing "Batman XXX, A Porn Parody."

(Credit: Axel Braun)

Axel Braun Productions filed the complaint Friday in U.S. District Court for the Northern District of West Virginia, alleging that the defendants illegally shared the adult film "Batman XXX: A Porn Parody." The film was written and directed by Axel Braun and distributed by Vivid Entertainment, one of the country's best known porn studios.

In an interview about the suit with Xbiz Newswire, a publication that follows the adult-film industry, Braun made it clear he's prepared to take on the file-sharing crowd.

"F--- 'em all," Braun told Xbiz. "People don't realize that when you pirate a movie it hurts all of the people who work very hard to get it produced--from the cast to the production assistants to the makeup artists...So we are going after every one of them who pirates our content."

Read full post…

Tags:
online porn ,
axel braun productions ,
online file sharing ,
bit torrent
Topics:
In The News ,
Tech Talk
  • Digg
November 2, 2010 1:06 PM

As Apple's Holdings Exceed $51 Billion, Some Investors Grumble

File this under the header of "Problems we all would like to have."

According to Bloomberg, Apple now has $25.6 billion in cash and short-term investments and "double that amount when including the longer-term holdings," as of Sept. 25. Even more eye-popping when you consider that the total is more than the gross domestic product Costa Rica tallied last year ($50.1 billion). But now, Bloomberg reports, Apple is hearing it from some investors who are unhappy about a relatively low return on that stash.

Steve Jobs (Credit: Josh Lowensohn/CNET)

In its most recent financial filing, Apple reported receiving a 0.75 percent return on its investments during the past fiscal year. By comparison, the yearly interest on a personal savings account earns nearly 0.8 percent.

Bloomberg quotes Keith Goddard, CEO of Tulsa, Oklahoma- based Capital Advisors Inc. arguing that "that amount of cash is way above what's needed to have a prudent war chest." In a similar vein, Ryan Jacob, chairman and chief investment officer of Jacob Funds, told the wire service that some of that money ought to get returned to investors. "The point is they can't keep accumulating it," Jacob said. "I don't understand the hesitation about a stock buyback and/or dividend."

Since taking over as CEO in his second stint with Apple, Steve Jobs has proved his critics wrong more often than not. And he's not likely going to reverse course on this question either. Note that during a recent conference call, Jobs suggested that Apple wasn't going to rush into anything.

"We've demonstrated a really strong track record of being very disciplined with the use of our cash," Jobs said during the call with financial analysts. "We don't let it burn a hole in our pocket. We don't allow it to motivate us to do stupid acquisitions. And so I think that we'd like to continue to keep our powder dry because we do feel that there are one or more strategic opportunities in the future."

Go argue with success.

Tags:
steve jobs. wall street ,
apple
Topics:
In The News ,
Tech Talk
  • Digg

About Tech Talk

Stay tuned to the latest news and developments remaking the worlds of science and technology.

Add to your favorite news reader
google
yahoo
msn
CBS News on Facebook