Thursday, December 2, 2010

The Elusive Theory of Everything (preview)

 Image: Illustrations by Barron Storey

Stephen Hawking’s work on black holes and the origin of the universe is arguably the most concrete progress theoretical physicists have made toward reconciling Einstein’s gravitation and quantum physics into one final theory of everything.Physicists have a favorite candidate for such a theory, string theory, but it comes in five different formulations, each covering a restricted range of situations.A network of mathematical connections, however, links the different string theories into one overarching system, enigmatically called M-theory: perhaps the network is itself the final theory.In a new book, The Grand Design, Hawking and Caltech physicist Leonard Mlodinow argue that the quest to discover a final theory may in fact never lead to a unique set of equations. Every scientific theory, they write, comes with its own model of reality, and it may not make sense to talk of what reality actually is. This essay is based on that book.

A few years ago the city council of Monza, Italy, barred pet owners from keeping goldfish in curved fishbowls. The sponsors of the measure explained that it is cruel to keep a fish in a bowl because the curved sides give the fish a distorted view of reality. Aside from the measure’s significance to the poor goldfish, the story raises an interesting philosophical question: How do we know that the reality we perceive is true?


The goldfish is seeing a version of reality that is different from ours, but can we be sure it is any less real? For all we know, we, too, may spend our entire lives staring out at the world through a distorting lens.



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What Comes Next: Experts Predict the Future (preview)

 Image: Jason Holley

 Ten experts in science and technology describe the revolutions they see as already happening or that will in the near future.Our lives already rely on fragile information networks, and will soon be constantly recorded.  We will be able to shape our own biology and to produce food for all in sustainable way.Breakthroughs in science will lead us to wean ourselves from fossil fuels, create new forms of life, explain the riddle of consciousness and understand what makes us human..

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The Age of Digital Entanglement


By Danny Hillis


On November 19, 2009, a single circuit board inside a computer router in Salt Lake City failed. The glitch cascaded, preventing air traffic control computers nationwide from communicating. Hundreds of flights were canceled. On May 6, 2010, the Dow Jones industrial average inexplicably plummeted almost 1,000 points in minutes, only to mysteriously rise before the day ended. Had the “flash crash” not reversed itself, a global financial meltdown would have ensued.

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The World at Our Fingertips: The Connection Between Touch and Learning (preview)

 Image: iStockPhoto

Learning through touch is instinctual. Even newborns can recognize objects by touch alone.At first, tactile learning involves manipulating objects. But as children mature, they begin to apply these physical concepts to abstract ideas.Hands-on exploration helps children learn more and remember what they have discovered. It also enhances math, verbal and thinking skills.

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One evening while one of us (Colosi) was making dinner, her six-year-old daughter, Gianna, appeared with 10 little pieces of paper in her hand. She had been doing her homework, she said, and each of the scraps contained one of the words she was supposed to learn. When her mother asked why Gianna had torn apart her spelling list, she shrugged: “So I can do stuff with it.” For Gianna, abstract concepts became easier to understand after she had transformed them into physical objects—in this case, pieces of paper she could hold, feel and manipulate.


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The connection between touch and understanding is deeply instinc­tual, beginning in infancy and continuing, in varying forms, throughout our lives. Experiments have found that touch is as important as vision for learning and retaining information. Studies also show that tactile activities such as playing with blocks help children improve everything from their math abilities to their thinking skills. We are knowledge architects, building intellectual edifices through physical experiences.



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What Makes a Good Parent? (preview)

Decades of research reveal 10 essential parenting skill sets. A new study of 2,000 parents determined which skills are most important to bringing up healthy, happy and successful kids.Giving love and affection tops the list. Then comes a surprise: managing stress and having a good relationship with the other parent are more helpful than some child-focused behaviors.All types of people are equally competent at child-rearing—and anyone can learn how to be a better parent with a little effort.

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Amazon.com lists an astounding number of dieting books—more than 16,000. But parenting guides far exceed that number: there are some 40,000 of them, including books such as Jane Rankin’s Parenting Experts, that do nothing but evaluate the often conflicting advice the experts offer. People, it seems, are even more nervous about their parenting than they are about their waistlines.


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Why is there such chaos and doubt when it comes to parenting? Why, in fact, do most parents continue to parent pretty much the way their own parents did—or, if they disliked the way they were raised, the exact opposite way? Shouldn’t we all just find out what the studies say and parent accordingly?



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Wednesday, December 1, 2010

When Character Crumbles: A Kind of Dementia Reveals the Basis of Personality (preview)

Instead of robbing memory and thought, the most common variety of dementia in people younger than 60 steals away social graces, emotions and empathy.Family members and even doctors may erroneously view early signs of frontotemporal dementia (FTD) as a midlife or marital crisis.Studying people with FTD can help illuminate the neural underpinnings of self-awareness, of certain complex social emotions and of basic personality traits.Research reveals that personality does not simply emerge from a soup of brain chemicals but can be traced to specific brain structures and circuits.

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Harriet Holliday sparkled with personality. She reminded Kevin Horowitz, her third husband, of the mother in Mamma Mia!—free-spirited, flamboyant and nurturing. She dressed with a sexy, sophisticated glamour and regaled friends with witty tales at soirees. As hospitality manager at a winery in Napa Valley in California, she planned events for hundreds of guests. But around six years ago, at age 49, Holliday “started turning mean,” Horowitz recalls. “She didn’t know when to hold her tongue.”


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She became touchy and sarcastic, alienated friends and was soon fired from her job. Other odd or inappropriate behaviors surfaced. When the couple dined out, Holliday would wear a stylish dress with house slippers. She flirted outrageously with young male strangers and tickled them.



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Saturday, October 30, 2010

Voters: tax and OK to spend when it comes to water

On average a water main breaks survey geological somewhere in the United States every two minutes, according to the latest U.S..


It's no wonder that 85 percent of American voters approved the Government money to the country's water, overhaul infrastructure should invest according to a report released Wednesday by water systems manufacturer ITT Corporation.


Voters are prepared to pay for the upgrade.


When asked if you more to pay agreed 11 percent on your monthly bill "to ensure continued access to a reliable and consistent supply of clean water", 63 percent of American voters said yes according to ITT.


"If all American households is applied, this increase equal 5.4 billion dollar or four times the (tax) 2009 Federal investment in our nation's drinking water systems."ITT said in a statement.


When asked, the most important service rank set 95 percent of the U.S. voters water in the first place, followed by electricity, heat, Internet, mobile phone, landline phone, cable TV and cooling systems, or.


Perhaps most interesting is that the desire for reform of U.S. water infrastructure was 80 percent in favor, regardless of how wurde.Geschlecht, age, party analyzes membership, income, region of the country, or whether the defendant from a water challenged or water-rich State was apparently not to the matter.


The survey between August 6, 2010 and September 3, 2010, carried out was included 1,003 registered voters from 50 States, as also 502 industrial and agricultural enterprises.


On the corporate side 57 percent of industrial and agricultural enterprises were willing, in bills you pay more to a continuous clean and reliable water supply to gewährleisten.Wenn asked to name their price said was 7 percent average acceptable increase, according to the ITT report.


It is fair to note I TT's business interest one of its main production Märkte.Aber is the results in the results of the survey as water dovetail with Water data from the research analyst ethical Corporation in May released .Dass corporate water report found that 99 percent of corporate sustainability Manager water as the top priority for companies in the next 5 to 10 years place.

First take: first whiplash the Nissan leaf drive

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(Credit: Liane Yvkoff)

As much as I write about electric cars, I don't often get to drive them. The 30 or so miles I drove the 2011 Nissan Leaf in Nashville, Tenn., last week was the longest I've spent inside a pure electric vehicle. And despite my obsession with battery technology, not once on that trip did I wonder about the onboard charger, thermal management system, or degradation of its lifetime capacity. That's Nissan's problem, and I trust they've sorted all that out. I was too busy enjoying the driving experience and fiddling with the infotainment system.


Battery-electric motor aside, the Nissan Leaf is more or less like other conventional gas-engine-equipped compacts in its price range, albeit a bit roomier since it's a hatchback. The main difference is that the car is limited to a 100-mile range, give or take a few, as confirmed by the LA4 test cycle, and a top speed of 94 mph. The Nissan Leaf is available in two variants: SV (base) or SL. The only difference between the two is that the SL trim adds a solar panel on the spoiler to support some accessories, such as fog lights and headlights, and a backup camera.

The gear shift is modeled after a trackball, and there are only two gears: drive and reverse. The gear shift is modeled after a trackball, and there are only two gears: drive and reverse.

(Credit: Liane Yvkoff)

On the outside, the Leaf appears small, but at 175 inches, it's almost as long as the Nissan Versa sedan. The EPA classes the Leaf as a midsize vehicle because of its interior volume. To put it in perspective, Nissan's marketing team says you can fit three car seats across the back row in any configuration. Although it's far from the perfect road-trip vehicle, it has all the essentials you need in a commuter car, a few creature comforts, and a couple of bells and whistles you don't expect. The interior is spare but comfortable (to me, it seemed more Honda than Nissan) with a few dashes of digital design. The main focus on the inside is the standard in-dash navigation system, the digital instrument panel, and the funky cue-ball-esque gear shift on the center console that contrasts against the pale-beige-and-gray interior, making everything else sort of fade away into the background. It's almost serene.


The Leaf uses Nissan's Intelligent Key with Push Button Start. In the driver's seat, you might experience the same "is it on?" confusion as you do in hybrid vehicles. You'll need to train yourself to check the instrument cluster for the telltale "Drive" and corresponding green car symbol, which signal to the driver that they're ready to go. Drive and reverse are the only two gears on the Leaf, and you're given the option of two driving modes: regular or Eco. The former will familiarize you with the powerful torque that electric motors famously deliver. It will also familiarize you with whiplash, we discovered. Tip: go easy on the throttle.


The torque makes accelerating from 0-20 mph a breeze, but it's the climb to 60 mph that will remind you that you're in an electric car as you watch the near exponential drop in range on the instrument panel. Switching to Eco mode will eliminate the dramatic throttle tip-in, conserve energy, and deliver a smoother, but less exhilarating ride that maximizes range. An Eco Indicator on the instrument panel displays trees when you drive efficiently, but we never saw a tree during our test drive. With the 600-lb battery pack bolted squarely in the center of the car floor, the Leaf has a low center of gravity and feels stable around corners. The only thing holding us back on the freeway was the Highway Patrol we spotted, and the EV was a pleasure to drive on country roads.

In addition to the usual suspects, the digital instrument panel shows the driving distance, battery capacity, and battery temperature. In addition to the usual suspects, the digital instrument panel shows the driving distance, battery capacity, and battery temperature.

(Credit: Liane Yvkoff)

There are definite upsides to an electric motor. At lower speeds you get the kind of silence that luxury car designers can only dream of achieving. However, at 80 mph, you'll hear wind noise rivaling a softtop, which isn't entirely the fault of the Leaf--there's no gas engine to provide soft, rumbling ambient noise. But there is an infotainment system.


The primary job of the six-speaker Clarion touch-screen infotainment system is to convey battery information and driving distance capability to the driver. There are numerous screens that offer incrementally more information on battery health, energy history, energy usage battery maintenance--most of which the average driver will find useless. There are only a few screens that will matter, namely the ones that detail battery range, the nearest charging stations, and graphically display how far you can go in one direction on the current battery charge. If you're concerned whether a destination is within range, enter it into the navigation system, and it will let you know. Another screen worth noting is Maintenance, which, if you're like me and have no idea when the air conditioning filter was last changed, now you'll have a screen that will tell you when to change it and add air to the tires. Everything else you probably can safely ignore.


The navigation is adequate and works pretty much as you'd expect, although dragging the map seemed a little sluggish. Point-of-interest (POI) lists show nearby restaurants and stores, and it's free for the first three years. And where a conventional nav system might show gas stations along the way, the Leaf's will show public charging stations. Suffice to say, those will be few and far between until EcoTality and Coulomb Technologies complete their roll-out of station installations. Nissan says there should be 13,000 public charging stations across the U.S. by this time next year. The car is equipped with telematics that it uses to update its charging station map. Due to bandwidth contraints, full updates to the navigation system will still need to be done via SD card.


The Leaf also offers Bluetooth voice control, and offers straightforward features such as dialing from either your contact list, the car's contact list, or the car's call history.

The navigation system includes a screen that maps how far you can go on the current battery charge. The navigation system includes a screen that maps how far you can go on the current battery charge.


Connecting my iPhone to the car was easy enough, although I didn't get enough time to fully test the connection. The Leaf doesn't offer Bluetooth streaming because the specs hadn't been finalized in time to make it into the car design before the Leaf's production, so I still had to connect via cable to access music on my phone. Song and artist information displayed on the navigation screen, although not album art, and I was able to interface with iPod/iPhone the steering wheel controls. One weird thing I noticed: clicking up on the steering wheel control replayed the song, while clicking down skipped to the next track. I thought it should be the opposite.


Unfortunately, I didn't get to try the more advanced software features of the Leaf: its charging system and remote access. The Leaf's electric charging interface acts like a smart meter and will enable the driver to program at what time and for how long to charge the vehicle. You can interact with this charging software in the car or remotely using either a soon-to-be released smartphone application or over the Internet. The system will also e-mail or text you with car updates, such as if charging is completed or interrupted, or for emergencies. In the event of an emergency, the app will have a direct link to Nissan Call center, which serves only Leaf customers.


When you add in Nissan's tow plan, these features make the 2011 Nissan Leaf a fairly safe bet. In fact, the Leaf is a really good car--for a first-generation electric vehicle. I hate to use the qualifier, but if it weren't for wow factor of the electric power train, the Leaf would probably be considered merely adequate. But for an EV, it's an impressive first move, and I suspect that it will get only better over time. Double the capacity of the battery and light a fire under Ecotality to install their fast-charging stations, and gas cans will become a relic of the past.