mercredi 8 août 2012


مبروك عليكم الدكتاتورية الجديدة...
آثار الإعتداء على مريم منور رئيسة الحزب التونسي في مركز الملاسين منذ قليل...

mardi 7 août 2012

Use Your Body's Electrical Field To Uniquely Identify Yourself



EEG Machine Wikimedia Commons
You are unique. This is one of the more obscure ways you're unique: An alternating current of different frequencies running through you causes a reaction that's noticeably different from anyone else's. Researchers from Dartmouth University are trying to put this difference to use by creating wearable electronics that respond to--and only to--their intended user.
The design they're discussing is called "Amulet," a device "not unlike a watch" that could take a measurement like this, confirming the identity of a person. The device would use small electrodes to measure how the body's tissue react to the alternating current, which changes from person to person. It's a lock that's keyed into your biology; when it's set up with the device, it only unlocks it for you.
After that, it gets even better: once that connection has been established, researchers say, that device can coordinate with others. Those devices would join the party through physical contact--maybe as easily as being slipped into a pocket, and staying securely rooted in your unique biology.
A system like that could be used to better monitor a person's health; a single device attached directly to the body could monitor that person from anywhere, without causing wireless security concerns. But researchers are conceding that a better way of reliably interpreting the data coming from the sensor will still take time, and reliability is more than a little important for something like this.



lundi 6 août 2012

Mars Rover Curiosity Lands Successfully on Mars After Incredible Effort


After cruising through space for eight months, and plummeting through the Martian atmosphere for seven minutes, the rover reports success



Curiosity Triumphant The robot geologist and chemist landed safely on Mars at 1:31 a.m. Eastern time Monday morning/ 10:31 p.m. Pacific time Sunday night. The rover is still tucked tightly for the next day or so, but explosive devices will fire to release its mast within the first day, so the rover's Mastcam can take a panoramic image of its landing spot in Gale Crater. NASA/JPL
PASADENA, Calif. -- Space fans, raise a toast: NASA's laser-equipped, beefy-armed, car-sized rover is safe and sound on the surface of the Red Planet. A journey of 352 million miles ended in a supersonic plunge through the Martian atmosphere late Sunday night, and after seven minutes of terror, the Mars rover Curiosity unspooled from the Mars Science Laboratory spacecraft and alighted on the dusty surface of Gale Crater.
A chorus of radio beeps signaled the spacecraft’s progress, and the Mars Odyssey orbiter transmitted a “safe landing” signal at 10:32 p.m. Pacific time that elicited whoops of joy from the people at Mission Control in California. With wheels down and antennae up, Curiosity is now ready to get to work, combing ancient terrain for signs of life in the Martian past.
“It's the wheel! It's the wheel!" a NASA engineer cried as the first image shot by the craft arrived on Earth. "Oh my God." Curiosity is on the surface!


The First Image Returned by Mars Rover Curiosity: Includes a bit of wheel

Unseen and uncontrolled from Earth, the Mars Science Laboratory spacecraft took care of entry, descent and landing on its own. Tucked in a chicken pot pie-shaped aeroshell, the spacecraft punched through the Martian atmosphere at 13,200 miles per hour, shedding two laptop-sized blocks of tungsten ballast to adjust its angle of entry. This helped the spacecraft steer itself, aided by thrusters at its edges. Seven miles from the surface, a supersonic-capable parachute deployed to slow the spacecraft down.
Its 15-foot heat shield was subjected to temperatures up to 3,800 degrees Fahrenheit as MSL screamed through the thin atmosphere. About five miles from the surface, the heat shield jettisoned, exposing the spacecraft's bare belly and wheels to the Martian surface. Radar began tracking the ground at Gale to find a clear landing spot.
A few seconds before landing, about a mile up, the spacecraft performed the most daring maneuver of its life, dropping out of its backshell with no supports or airbags. Eight retro-rockets fired up to bring Curiosity to a slow hover, to about 1.7 MPH. Then four of the engines shut off as nylon cords began spooling the rover down on a bridle. This “sky crane” lowered the rover slowly until its six wheels hit the fulvous sand, and then Curiosity sliced its umbilical cord.
From 10 minutes before entry up to the cutting of the bridle, the spacecraft underwent six different vehicle configurations and fired 76 pyrotechnic devices. Then the hovercraft flew away to a crash-landing, leaving the rover alone on the surface of Mars.
"Even the longest of odds are no match for America's unique blend of technical acumen and gutsy determination," said John Holdren, President Obama's chief science adviser, in a press conference after the landing.
Later Monday or Tuesday, NASA will have high-definition, 4-frame-per-second video of this whole sequence, captured by the Mars Descent Imager on Curiosity’s undercarriage.
A successful landing is a major coup for NASA, which spent $2.5 billion developing the Mini Cooper-sized rover. Curiosity is the largest and most complicated robot geologist ever constructed, with 10 instruments specially designed to look for evidence of life.
Now the rover and its science teams will get to work. The first driver shifts start at 6 a.m. California time. Stay with us here and on Twitter for the latest updates, and to hear more about Curiosity's first tasks!


Gale Crater, Oblique View: Gale Crater, where the Mars rover Curiosity of NASA's Mars Science Laboratory mission will land, contains a mountain rising from the crater floor, called Mt. Sharp. This oblique view of Gale Crater, looking toward the southeast, is an artist's impression using two-fold vertical exaggeration to emphasize the area's topography. Curiosity's landing site is on the crater floor northeast of the mountain. The crater's diameter is 96 miles (154 kilometers).  NASA/JPL

Building Artificial Islands That Rise With the Sea



Paradise Island As climate change causes the sea level to rise, people who live in low-lying areas could move to artificial floating isles. Dutch Docklands International
With an average elevation of just five feet above sea level, the Maldives—a nation comprising 1,192 islands in the Indian Ocean—is the lowest country in the world. Sea level, meanwhile, has risen by about seven inches since 1900, and scientists predict that it will rise as much as two more feet by 2100, pushing much of the population (about 390,000 and growing) out of their homes. In the past, engineers have used sand and rubble to create islands elsewhere, but these structures can disturb the sea and seafloor ecosystems.

THE SOLUTION

The Maldivian government has started a joint venture with the architectural firm Dutch Docklands International to build the world’s largest artificial floating-island project, which will stay above water no matter how many glaciers melt. In the Netherlands, the company has already built floating islands for prisons and housing from slabs of concrete and polystyrene foam. For the Maldives, it will anchor similar structures to the seabed using cables or telescopic mooring piles, making landforms that are stable even in storms. The design disturbs only a small patch of the seafloor while preserving natural currents. And many smaller islands are more ecologically sound than one large one because they cast smaller shadows on the water, minimizing the impact on sea life. Although the company is starting to build an island for 200 luxury residences and another for a floating golf course this year, it is working on plans to construct islands for more affordable housing next.

New Technology 2012 – Most Anticipated this New Year


As we gracefully welcome the New Year, we are also looking forward to a number of new innovations and advancements in technology like we do year-after-year. Technology is one thing that has never witnessed its core end or the ultimate satisfaction. Everybody wants more and more in the upcoming years. Talk to a geek and you will realize how restless he is to know “What is next”.
So what is next? Just like the recent past years, 2012 seems to be yet another promising tech year. Though many of these technologies may not have come up with a promised release date, they are the definite ones to emerge as upcoming gadgets for our new year. Here are few of the most anticipated and rumored gadgets for 2012.

The iPhone 5 and its Rumors





Rumored picture of the iPhone 5 (may not be accurate)
The iPhone 4S emerged at an event when the iPhone 5 was gestated. Though there could have hardly been any regrets, it was like expecting to see the queen and finally ending up meeting her minister. However, the iPhone 5 is still on the cards and is strongly rumored to be released in the mid of 2012. Some even believe that the delay is for the good and the greater the time Apple consumes, the better is their chances of coming out with a great product. Now let’s see some of the strongest rumors revolving around the iPhone 5.
To start with, the device is expected to feature a larger screen (probably 5-inch) and a completely new design and a new casing. As usual, they will be rich, tempting and would live up to what Apple is always known for its superiority. Based on the mobile phone chip developments so far, it can be incurred that the iPhone 5 would be debuting with its quad-core 5 processor (could be called Apple A6).
It cannot be too long before the Apple announces its version of 4G mobile phone. So this could be seen in the iPhone 5. Other rumors say that the new iPhone could be released in two variants – iPhone 5 and iPhone 5 pro. Predictors also say that the iPhone 5 could ship its glass from Wintek, the touch panel vendor. The phone is more likely to be available in white and black. Following the iPad 2, the iPhone is likely to have a full HD support. The new device will also get more memory, more storage and a faster processor. It is more likely to have the A5 processor of the iPad 2 which is a dual-core processor. With a new antenna, the iPhone 5 may also feature a 16 GB or 32 GB storage.

The iPad 3′s Rumor bag has been full as well




After the runaway success of the iPad1 and iPad2, a lot of expectations have arisen for the iPad 3. The iPad 3 definitely cannot go wrong and so here is the collection of its possible specifications.
To begin with, the iPad 3 might feature a new quad core ARM-based processor – the A6. It is wildly predicted that the new device might feature a retina display especially with Apple regularly testing the 2048 x 1536 (9.7 inch) display from the Samsung and LG models. In the mid November of 2012, there have been more rumors on the new tablet that it might feature a dual-LED light bar technology due to its super-high-pixel density.
One tasty rumor that is also exciting to know about is the suggestion that iPad3 might boast NFC (Near Field Communication) technology to take on the Mac devices nearby. This technology allows users to share and transfer data just by the flick of the wrist. Another expected specification of the iPad 3 suggests that it could feature more storage capacity with its added 128 GB flash storage option.
The thunderbolt port in the 2011 MacBook Air and MacBook Pro is very popular for its astonishing speeds as it could also be included in the new iPad. This is a welcome move especially after the absence of a USB port in the first two generations of iPads. Just like the iPhone 5, the iPad 3 is also rumored to feature a 4G Qualcomm Gobi 4000 chip LTE next-gen connectivity.
Other familiar rumors:
The device could be bulkier owing to its higher resolution display.
The making of the new iPad could be assisted by other companies other than the Foxcomm. It could be the Pegatron Technology or the Quanta computers.
The new device could be using a separate adapter to detect camera cards and flash drives.
Gesture controls could be featured.
The device could feature a light weight carbon fiber case specially designed by Kevin Kenney, senior composites engineer at Apple Inc. and President at Kevin Kenney & Associates LLC.

The Dell Peju Windows 8 Tablet






Dell Peju windows 8 revealed pic (may not be accurate)
This is another exciting technology prospect waiting for 2012. Microsoft’s long-time close association with Dell is yet again showing its worth with its new windows tablet. The all new Dell Peju Windows 8 tablet promises to be yet another thumps up to the tablet world.
Rumored Specifications
Windows 7 pro operating system is also compatible with Windows 8
CPU features an Intel Core i5 processor
5 megapixel back camera and 1.3 mega pixel front camera
10.1 inch wide-angle display
Slots or ports with support for two USB, HDMI, audio, Mini VGA, microSD and 3GSIM
5500 mAh battery that supports 6-8 hours battery backups
4GB memory card
Storage capacity of 64-GB or 120-GB SSD
Connectivity : Bluetooth, 4G, 3G, WiFi with b/g
Input systems : Bluetooth, USB keyboard, Stylus and Touch

The Windows 8 and the Speculations Around it




Windows 8 (may not be accurate)
For many years, windows operating system has been the most-widely used OS. Especially after the wonderful success of Windows 7, there have been more speculations of the Windows 8. With a new user interface and app store, Windows 8 offers a lot of new features.
Let us now make an overview of these features.
Supports both ARM tablets and x86 PCs
The ‘Windows To Go’ feature is exciting as it allows the OS to be booted from a USB device along with a user’s personal settings and preferences.
The popular operating system will be introducing their Windows Store, which they claim will even challenge the Apple store. Many kinds of windows app are expected in the market.
Simple, yet interactive user interface and one of the best, the OS has ever witnessed.
Windows Defender will allow you to surf the internet with utmost and latest security standards.
Internet Explorer 10 promises better HTML 5, CSS 3 and hardware acceleration thereby giving the best web browsing experience.
Offers faster booting when you turn on the PC. Thanks to the Protogon file system.
Better management system and resource handling would help you work with less than 300 MB RAM capacity.
The OS can be used in any platform like mobile phones, tablets, laptops and personal computers.

2012 will Share its Fun with Gamers Too with the Release of the PlayStation Vita





PlayStation Vita.
Sony’s new handheld powerhouse gaming device is expected to be released in February 2012. The device may be released in two versions – one supporting WiFi and the other with WiFi + 3G. This handheld gadget is packed with features and is also expected to be an affordable one. Some of the reported specifications are as follows:
Quad-core processor
5-inch OLED touch screen
dual analog sticks and dual cameras
rear touch panel
With the emerging gaming mobile devices, it is very difficult to predict the future of these gaming devices. But Sony has always done well with gadgets like the Nintendo (that has dominated the world of gaming portable devices for a long time).

Cannon’s new high-end digital camera: could be the successor of EOS – 1D




Canon EOS 1D.
Much to the delight of shooters around, Cannon may release its new digital photo machine that could be the successor of the tremendously popular EOS-1D. Rumors suggest that the camera might be released in March 2012 and will boast the following features:
18MP sensor
Full 61 focus points
Sensitivity range of ISO100-51200
A fixed LCD
24-70mm lens casting
Cannon is also expected to release its new SLR lens, a new compact video camera with 3 new innovative lenses and a new PIXMA printer in 2012.
Apple’s Entry into the Television market may be due in 2012
Analysts now strongly predict that Apple might make its debut to the television world in 2012. Though nothing much is known about the Apple’s HDTV a collection of rich rumors suggests that the new TV’s screen could be supplied by Sharp. Whether the new TV will feature 3D technology or what could be the price range is all out for everybody’s guess. One interesting and wild rumor, points out that Apple could follow the technology that is used in the iPhone 4S’s Siri. Yes, that would mean you will be able to control your television through voice commands. Again, this technology would be a threatening competition to
Microsoft’s Kinect that allows voice commands for its Xbox on a TV.
At present, how much rumors are true and fake is left to your stretch of imagination.
As Henry David Thoreau, an American author and poet, points out, “Men have become the tools of their tools”. Be it a strong speculation or an officially announced information, the 2012 seems to be a fun-filled year for the geeks.

GameKlip pairs Android smartphones with PS3 controllers



Handheld games consoles such as the impressive PS Vita, though still popular, are in danger of being sidelined by increasingly capable smartphones and the games that are available to play on them. There is one problem with this transition however: the control system on touchscreen phones and tablets leaves a lot to be desired. Which is where GameKlip enters in to the equation.


GameKlip is a simple solution that brings two existing products together in a way that makes them look as though they were always designed to operate in unison. GameKlip is essentially nothing more than a plastic clip that attaches an Android phone to a PS3 controller, but its simplicity cannot take away from its usefulness.
The GameKlip hooks on to a PS3 controller and the Android phone is then slid snugly into place above the shoulder buttons. Once connected the whole thing looks more like a dedicated handheld games console than two devices forced uncomfortably together. The PS3 controller offers native analog input and emulates both touch and hardware controls. While it may not make you any better at Angry Birds, it will offer a more intuitive method of controlling the more complex games that are increasingly being ported to Android and sold through Google Play.


Each GameKlip is manufactured to fit a specific phone, with versions to fit popular devices kept in stock. Versions for other Android phones can be forged on demand. This made-to-order approach means each GameKlip will only fit the make and brand of phone specified. If you buy another phone, which most of us do every one or two years, you'll likely need to buy another GameKlip. Another note to remember is that you have to remove your phone from its case in order to fit the GameKlip in place. While the inventor of the GameKlip is confident that once inserted into the bracket the phone is safe from falling, the risk still remains.
The Sony Playstation DualShock3 controller and the phone connect wirelessly thanks to the Sixaxis Controller app from Dancing Pixel Studios, but your phone needs to be rooted in order for it to work in this way. Thankfully there is a compatibility checker available on Google Play. Those who own phones that either aren't rooted or aren't compatible have the option of going the wired route, with a USB cable included for those willing to pay a little extra. Unfortunately only the Samsung Galaxy S3 has so far been tested to work with the PS3 controller using this method. Which is something of an oversight.
A version for the Xbox 360 controller is said to be being worked on, while "GameKlip Tablet" for 7-inch devices is at the prototype stage. GameKlip for Android phones is available to buy now for a range of different devices, priced at US$15 for the wireless version, $23 for the wired version (plus shipping).
GameKlip's promo video (below) provides a closer look at this simple but effective piece of hardware.


NASA announces advanced technology proposals


A submarine glider to explore the ocean of Europa, a solid-state air purification system and a way of making concrete out of lunar soil for Moon colonies - these are a few of the 28 proposals that NASA has selected for study and development under its NASA Innovative Advanced Concepts (NIAC) Program. Part of the larger Space Technology program, NIAC is the space agency’s way of kick-starting innovation that has the potential to improve future missions, aerospace systems and other capabilities.
Of the 28 proposals green lighted, 18 were classed as Phase I and awarded US$100,000 to fund a year of study into the feasibility and properties of the concept. A further ten were classed as Phase II, meaning they were given US$500,000 and two years to further develop last year’s most successful NIAC Phase I proposals. The areas covered by the proposals included power, propulsion systems, structures and avionics that will hopefully provide the technology needed for NASA to achieve its future goals.
"These selections represent the best and most creative new ideas for future technologies that have the potential to radically improve how NASA missions explore new frontiers," says Michael Gazarik, director of NASA's Space Technology Program at the agency's headquarters in Washington. "Through the NASA Innovative Advanced Concepts program, NASA is taking the long-term view of technological investment and the advancement that is essential for accomplishing our missions. We are inventing the ways in which next-generation aircraft and spacecraft will change the world and inspiring Americans to take bold steps."
The proposals are at least of a decade away from any practical application, however, they do include some very intriguing ideas such as a robot prospector designed to hunt for mineral-bearing asteroids and establish the beginnings of anasteroid mining industry.
Other notable proposals include using nanosatellites for deep space exploration, a “landsailing” Venus rover and an anti-radiation shield generated by high-temperature superconducting magnets. There’s even a proposal for potholing missions to explore extraterrestrial caverns and a Variable Vector Countermeasures Suit, which is a sort of coveralls with gyroscopes built in to keep astronauts healthy in microgravity.
No warp drives or teleportation devices were included in the proposals ... but there’s always next year.



Sci-Fi writers of the past predict life in 2012


As part of the L, Ron Hubbard Writers of the Future award in 1987, a group of science fiction luminaries put together a text “time capsule” of their predictions about life in the far off year of 2012. Including such names as Orson Scott Card, Robert Silverberg, Jack Williamson, Algis Budrys and Frederik Pohl, it gives us an interesting glimpse into how those living in the age before smartphones, tablets, Wi-Fi and on-demand streaming episodes of Community thought the future might turn out.
Written during the Cold War, many of the predictions reflect the anxiety of a time when universal nuclear armageddon was still a daily threat. In fact, Isaac Asimov began his prediction with what was a standard preamble of the time.
“Assuming we haven't destroyed ourselves in a nuclear war, there will be 8-10 billion of us on this planet – and widespread hunger.”
It’s some small comfort to know that the Earth today is neither a radioactive wasteland, nor is it yet as crowded as Asimov feared – although he wasn't far off. With most of us now living in cities, the U.S. Census Bureau estimates the world's population hit seven billion in March of this year, (although the UN put the estimated date at September 2011). Unfortunately, he was on the money the latter prediction, with people in many parts of the world continuing to go hungry.
Meanwhile, Gregory Benford predicted that the population would never reach 10 billion, with negative consequences.
“There will have been major "diebacks" in overcrowded Third World countries, all across southern Asia and through Africa. This will be a major effect keeping population from reaching 10 billion.”
On the other hand, Benford was more optimistic regarding advances in manned spaceflight.
“Bases on the Moon, an expedition to Mars … all done. But the big news will be some problematical evidence for intelligent life elsewhere.”
It’s ironic that Benford's prediction of Moon bases and manned Mars expeditionshappening 25 years in the future is still pretty close to how we see it today.
Algis Budrys submitted a dense prediction that revolved around a post peak-oil world.
“Because we will be in a trough between 20th-century resources and 21st-century needs, in 2012 all storable forms of energy will be expensive. Machines will be designed to use only minimal amounts of it.”
Cutting the power requirements of all manner of electronic devices – from light bulbs to supercomputers – has indeed become a major concern for manufacturers and consumers. Budrys believed the need to conserve energy would lead to an information-based society. This idea of an information society that is, in some ways, very like our own is echoed by Roger Zelazny in a sentence of herculean proportions.
“It is good to see that a cashless, checkless society has just about come to pass, that automation has transformed offices and robotics manufacturing in mainly beneficial ways, including telecommuting, that defense spending has finally slowed for a few of the right reasons, that population growth has also slowed and that biotechnology has transformed, agriculture and industry – all of this resulting in an older, slightly conservative, but longer-lived and healthier society possessed of more leisure and a wider range of educational and recreational options in which to enjoy it – and it is very good at last to see this much industry located off-planet, this many permanent space residents and increased exploration of the solar system.”
The world is certainly is going toward a cashless society, and biotechnology has seen huge advances in recent decades. Thanks to advances in medicine, populations in the developed world now live longer, healthier lives and population growth has indeed slowed in most developed countries. Defense spending has also declined (relatively speaking), but in response to financial pressures rather than a more conservative society.
Sadly, Zelazny's prediction of more leisure time hasn't eventuated. Instead of cutting working hours, technologies such as wireless Internet, smaller and more powerful laptops, tablets and smartphones now allow us to work anywhere and everywhere, so that work now encroaches on our so called leisure time more than ever before.
And while the whole space industry thing has yet to take off to the extent Zelazny predicted, recent developments from the private sector with commercial spaceflightsset to launch in the near future and continuing exploration of the solar system, it appears he may only have been a little too optimistic in terms of time-frame.
However, Zelazny did hit the nail on the head with his foreseeing the e-book.
“I would like to take this opportunity to plug my new book, to be published in both computerized and printed versions in time for 2012 Christmas sales – but I've not yet decided on its proper title. Grandchildren of Amber sounds at this point a little clumsy, but may have to serve.”
Unfortunately, Zelazny died in 1995, but his books – including his popular The Chronicles of Amber series – are readily available in electronic format.
Jerry Pournelle missed the mark by not predicting that the Deep Blue computer would defeat world chess champion Garry Kasparov, but he did present this frightening prognostication – for writers, anyway.
“A computer will win the (John W.) Campbell (Jr.) and (L. Ron) Hubbard Awards.”
Tim Powers had an interesting take that is wrong on every count.
“Probate and copyright law will be entirely restructured by 2012 because people will be frozen at death, and there will be electronic means of consulting them. Many attorneys will specialize in advocacy for the dead.”
However, Russian media magnate Dmitry Itskov is attempting to make Powers' prediction a reality by 2045 with the "Avatar" Project.
A particularly interesting prediction comes from Frederik Pohl.
“(Y)ou live in a world at peace. Something like the World Court, as an arm of something like the United Nations, resolves international disputes, and has the power to enforce its decisions. For that reason, you live in a world almost without weaponry; and, because you therefore do not have to bear the crippling financial burden of paying for military establishments and hardware, all of you enjoy and average standard of living about equal to a contemporary millionaire's. Your health is generally superb. Your life expectancy is not much less than a century. The most unpleasant and debilitating jobs (heavy industry, mining, large-scale farming) are given over to machines; most work performed by human beings is in some sense creative. The exploration of space is picking up speed, both by manned colonization and robot probes, and by vast orbiting telescopes and other instruments. Deforestation, desertification and the destruction of arable land has been halted and even reversed. Pollution is controlled, and all the winds and the waters of the Earth are sweet again.”
Pohl goes on to call this an extremely improbable outcome, but he argues that if anyone is reading his predictions, that’s what happened. What’s interesting here is that some of what Pohl predicted did, to one degree or another, come to pass. Life expectancy is longer, standards of living did rise, robots are becoming more common in industry and agriculture, and the Hubble telescope and its successorsare orbiting as you read this.
However, the collapse of the Soviet Union, which even the CIA missed predicting, made the whole U.N. running the world to avoid nuclear war thing moot. Meanwhile, the current situation in Syria and the ineffectiveness of the U.N. in dealing with it only illustrates how far off the mark he was in predicting a world at peace.
A prediction by Gene Wolfe sounds very familiar to any film-goer.
“Sports and televised dramas are the only commonly available recreations. The dramas are performed by computer-generated images indistinguishable (on screen) from living people. Scenery is provided by the same method. Although science fiction and fantasy characterize the majority of these dramas, they are not so identified.”
While we still have plenty of activities to partake in other than plonking ourselves down in front of the TV, – with technology even providing new ways to enjoy old ones – CGI characters, ubiquitous use of green screen and stories that are sci-fi, but not called that have all come to pass.
But of all the predictions, Gregory Benford’s is probably the most apt.
“I will be old, but not dead. Come by to see me, and bring a bottle.”
Benford is still alive and continues to write. He has a new novel coming out later this year, with more to follow.

Researchers identifiy mechanism that turns white fat cells to brown



Earlier this year, a team from UC San Francisco reported on the discovery that a class of commonly prescribed type-2 diabetes drugs, called TZDs (thiazolidinediones, such as Actos and Avandia), promoted the conversion of energy-storing white fat cells into energy-burning brown fat cells. Now researchers at Columbia University Medical Center (CUMC) have identified the mechanism that causes this change to take place, potentially leading to new treatments for obesity and type-2 diabetes.
While it was known that TZDs have the ability to change white fat cells to brown fat cells by activating a cell receptor called peroxisome proliferator-activated receptor–gamma (ppar-gamma), the exact mechanism behind this transformation was unclear. Because TZDs have numerous adverse side effects, including liver toxicity, bone loss and, surprisingly enough, weight gain, the CUMC researchers, led by Domenico Accili, MD, professor of Medicine and the Russell Berrie Foundation Professor at CUMC, were attempting to find a safer way to change white fat to brown fat.
Having previously shown that increasing the activity of a group of enzymes called sirtuins (or Sir2) in mice resulted in increased metabolic activity, the CUMC team has now shown that this boost in metabolism is a result of promoting the browning of white fat.
“When we sought to identify how sirtuins promote browning, we observed many similarities between the effect of sirtuins and that of TZDs,” said lead author Li Qiang, PhD, associate research scientist in Medicine at CUMC.
Knowing that sirtuins work by severing the chemical bonds between acetyl groups and proteins in a process known as deacetylation, the researchers wanted to uncover whether sirtuins remove acetyl groups from ppar-gamma and if this deacetylation of ppar-gamma is crucial to the browning of white fat. They confirmed this is the case by creating a mutant gene of ppar-gamma that, in effect, mimicked the actions of sirtuins and promoted the development of brown fat-like qualities in white fat cells in both mice and human fat tissue.
“Our findings have two important implications,” said Dr. Accili. “First, they suggest that TZDs may not be so bad – if you can find a way to tweak their activity. Second, one way to tweak their activity is by using sirtuin agonists – that is, drugs that promote sirtuin activity.”
“The truth is, making sirtuin agonists has proved to be a real bear – more promise than fact,” he continued. “But now, for the first time, we have a biomarker for good sirtuin activity: the deacetylation of ppar-gamma. In other words, any substance that deacetylates ppar-gamma should in turn promote the browning of white fat and have a beneficial metabolic effect.”
The CUMC team’s findings appear in the online edition of the journal Cell.

Take your music to the water with ECOXGEAR’s new waterproof Bluetooth speaker


Wouldn’t it be nice to lounge in the pool and enjoy your favorite music without risking the health and well-being of your precious mobile device? We have seen a number of waterproof MP3 players and accessories over the years, including theSpeedo Aquabeat, the Fitness Technologies UWaterG2 and more recently a waterproof smartphone case with a built-in speaker, ECOXGEAR’s ECOXPRO. Until now, though, we hadn't seen a waterproof Bluetooth speaker (as opposed to water-resistant, like the iShower) like ECOXGEAR’s new ECOXBT. It allows you to listen to your favorite songs in the water while your cell phone or Bluetooth compatible MP3 player remains safely on dry land.
The primary selling point to the ECOXBT is the Bluetooth connectivity. It would not do you much good to have a waterproof speaker if your not-so-waterproof mobile device had to be connected to it. By using Bluetooth, your device is able to stay on dry land while you rock out to your favorite tunes. Of course, you can only travel within the range of Bluetooth, so do not expect to be taking this on treks into the ocean. For hanging out in the pool, it should be perfect.
You can also use the ECOXBT as a speakerphone. Simply answer the call and talk into it as you would any other Bluetooth device.
The waterproof speaker is also able to float. You can drop it in the water and let it lazily float around the pool without having to worry about going on a diving expedition when it sinks to the bottom.
The ECOXBT looks rugged. A rubberized handle that looks like it can take a fall and keep on working envelops the entire speaker. Their website makes no mention of the kind of force the speaker can take, but it certainly appears designed to take a little bit of a beating.
The device is pretty chunky, which adds to its rugged look. It weighs a pound and half (0.68 kg), measures nine inches long (23 cm), four inches (10 cm) tall and just under three inches (8 cm) deep. The ECOXBT features two, two-inch (5-cm) full-range speakers designed to provide the audio juice.
ECOXGEAR includes a Lithium rechargeable battery that supports up to 10 hours of playtime on normal volume settings. It includes a USB to AC wall charger that is designed to fully charge the speakers in around two hours.
There is no official word on a release date or price for the ECOXBT. Gizmodo suggests that the device will come in at around US$100, but we will have to wait to hear from ECOXGEAR for confirmation.