Skip to main content

Home/ Science Technology Society/ Group items tagged Likes:

Rss Feed Group items tagged

techinstro com

Description and Specification of Graphene - 0 views

  •  
    Graphene is a single-atom-thick sheet made from combined carbon atoms. The carbon atoms are bonded together to share electron in a hexagonal, honeycomb-like structure. It is a single atom thick layered 2D material ever discovered in the world. It is made up of a hexagonal lattice pattern of carbon atoms in a monolithic honeycomb-like structure. It is a layer of SP2 single bonded carbon atoms arranged like a chicken wire mesh. It is 200 times stronger than stainless steel (SS) and 100 thousand times thinner than the human hair. It is the slimmest and strongest compound available on the earth. Anybody would be amazed when they know that we have found a material which is harder than diamond, yet lightweight, stronger than steel, but also highly flexible, and this material can be mined from the earth as it occurs naturally. It is yet thin enough to be mistaken for a saran wrap. Apart from the optimum physical properties, the other features are also impressive. Properties of Graphene These are some prominent features which make it a hi-tech material: Excellent Electronic Conductor Chief electronic property makes it an efficient Zero-Overlap Semi metal and gives it sufficient electrical conductivity. Carbon atoms possess typically 2 electrons in the inner shell, and 4 electrons in the outer orbit, total 6 electrons. Although conventionally, the outer 4 electrons in carbon can connect with another atom, each, the atoms can form a 2-dimensional bond with three atoms per single atom. This leaves an electron available for electronic conduction. Such electrons are known as 'Pi' electrons and found above and below in sheet. Ultimate Tensile Strength Mechanical strength is another prominent property of the material. It considered as being the foremost most robust material ever discovered, owing to the 0.142 Nm-long carbon bonds. It also possesses ultimate tensile strength, measuring 130 Gigapascals (or 130,000,000,000 Pascals). Compared to the tensile strength of industr
thinkahol *

New Scientist TV: Become a virtual film-maker - 0 views

  •  
    Motion controllers used in gaming systems like the Nintendo Wii revolutionised how video games are played. But now a similar device that's more precise - and even works when an object is in its way - will let you try something more futuristic: making movies in virtual environments. Matt Bett and his team from Abertay University in the UK developed the new motion controller that uses electromagnetic sensors to track its 3D position. The location is then mapped in real time to a virtual video camera on a screen (see video above). By moving the controller around, the camera moves around the scene like a real camera on a rig or it can be fixed to a virtual tripod.
thinkahol *

Future Intelligence | Watch Free Documentary Online - 0 views

  •  
    Catch a first-time glimpse at smart technology that will put android helpers in the home, network commuters and entire cities to the Web, and bring us entertainment systems that can virtually make dreams come true. Advances in artificial intelligence are creating machines with near human-like mental agility. Intelligence will be embedded everywhere - even in our clothing, thanks to smaller, more powerful computers. Soon, we will be able to build computers with artificial intelligence and processing power that rivals the human brain. Intelligence will be everywhere, in our clothing, our vehicles and homes. Intelligent robots will serve us - until they don't feel like doing so anymore. And what happens then…?
thinkahol *

EPFL spinoff turns thousands of 2D photos into 3D images | KurzweilAI - 0 views

  •  
    Researchers in EPFL's Computer Vision Laboratory developed a computer-based modeling service that generates a 3D image from up to thousands of 2D shots, with all the processing done in the cloud. Since April, the EPFL startup Pix4D has been offering the modeling service with a fourth dimension: time. Now, individuals and small businesses looking for fast, cheap, large-scale 3D models can get them without investing in heavy processing, the company states. With Pix4D, users upload a series of photos of an object, and within 30 minutes they have a 3D image. The software defines "points of interest" from among the photos, or common points of high-contrast pixels. Next, the program pastes the images together seamlessly by matching up the points of interest. Much in the same way our two eyes work together to calculate depth, the software computes the distance and angle between two or more photos and lays the image over the model appropriately, creating a highly accurate 3D model that avoids the time intensive, "point by point" wireframe method. With Pix4D's 3D models, you can navigate in all directions as well as change the date on a timeline to see what a place looked like at different times of the year. The company is collaborating with several drone makers (including another EPFL startup,senseFly) to market their software as a package with senseFly's micro aerial vehicles, or autonomous drones. Pix4D's time element avoids waiting for Google to update its satellite data or for an expensive plane to fly by and take high-resolution photos. Farmers, for example, can now send relatively inexpensive flying drones into the air to take pictures as often as they like, allowing them to survey the evolution of their crops over large distances and long periods of time. And since the calculations are done on a cloud server, the client doesn't need a powerful computer of his or her own.
thinkahol *

Mind-reading scan identifies simple thoughts - health - 26 May 2011 - New Scientist - 0 views

  •  
    A new new brain imaging system that can identify a subject's simple thoughts may lead to clearer diagnoses for Alzheimer's disease or schizophrenia - as well as possibly paving the way for reading people's minds. Michael Greicius at Stanford University in California and colleagues used functional magnetic resonance imaging (fMRI) to identify patterns of brain activity associated with different mental states. He asked 14 volunteers to do one of four tasks: sing songs silently to themselves; recall the events of the day; count backwards in threes; or simply relax. Participants were given a 10-minute period during which they had to do this. For the rest of that time they were free to think about whatever they liked. The participants' brains were scanned for the entire 10 minutes, and the patterns of connectivity associated with each task were teased out by computer algorithms that compared scans from several volunteers doing the same task. This differs from previous experiments, in which the subjects were required to perform mental activities at specific times and the scans were then compared with brain activity when they were at rest. Greicius reasons his method encourages "natural" brain activity more like that which occurs in normal thought.
thinkahol *

5 Things That Internet Porn Reveals About Our Brains | Sex & the Brain | DISCOVER Magazine - 0 views

  •  
    With its expansive range and unprecedented potential for anonymity, (the Internet gives voice to our deepest urges and most uninhibited thoughts. Inspired by the wealth of unfettered expression available online, neuroscientists Ogi Ogas and Sai Gaddam, who met as Ph.D. candidates at Boston University, began plumbing a few chosen search engines (including Dogpile and AOL) to create the world's largest experiment in sexuality in 2009. Quietly tapping into a billion Web searches, they explored the private activities of more than 100 million men and women around the world. The result is the first large-scale scientific examination of human sexuality in more than half a century, since biologist Alfred Kinsey famously interviewed more than 18,000 middle-class Caucasians about their sexual behavior and published the Kinsey reports in 1948 and 1953. Building on the work of Kinsey, neuroscientists have long made the case that male and female sexuality exist on different planes. But like Kinsey himself, they have been hampered by the dubious reliability of self-reports of sexual behavior and preferences as well as by small sample sizes. That is where the Internet comes in. By accessing raw data from Web searches and employing the help of Alexa-a company that measures Web traffic and publishes a list of the million most popular sites in the world-Ogas and Gaddam shine a light on hidden desire, a quirky realm of lust, fetish, and kink that, like the far side of the moon, has barely been glimpsed. Here is a sampling of their fascinating results, selected from their book, A Billion Wicked Thoughts.
thinkahol *

People who really identify with their car drive more aggressively, study finds - 0 views

  •  
    The studies found:People who perceive their car as a reflection of their self-identity are more likely to behave aggressively on the road and break the law.People with compulsive tendencies are more likely to drive aggressively with disregard for potential consequences.Increased materialism, or the importance of one's possessions, is linked to increased aggressive driving tendencies.Young people who are in the early stages of forming their self-identity might feel the need to show off their car and driving skills more than others. They may also be overconfident and underestimate the risks involved in reckless driving.Those who admit to aggressive driving also admit to engaging in more incidents of breaking the law.A sense of being under time and pressure leads to more aggressive driving.
Todd Suomela

Amateur Science and the Rise of Big Science | Citizen Scientists League - 0 views

  • Several trends came together to increase the professional nature of scientific work. First was the increasing cost of scientific work and its complexity. Scientific equipment became more precise and expensive. Telescopes, like those by Herschel, became bigger and bigger. Also, the amount of knowledge one needed to gain to contribute became increasingly daunting.
  • Second, the universities changed. Pioneered by the German states, which at the beginning of the 19th century was dismissed as a scientific backwater, universities began offering focused majors which trained students in a specific discipline rather than classical education as a whole. This was pioneered by Wilhelm von Humboldt, brother of the famous scientist Alexander von Humboldt, who was the Prussian Minister of Education.
  • Germany, once united, also provided impetus to two other trends that accelerated their dominance of science and the decline of amateurs. First, was the beginning of large-scale state sponsorship of science through grants which were first facilitated through the Kaiser Wilhelm Institute (now the Max Planck Institute). This eventually supplanted prizes as the dominant large-scale source of scientific funding. Countries like France that relied on prizes began to fall behind. Second, was the intimate cooperation between industrial firms like BASF and universities.
  • ...1 more annotation...
  • he final nail in the coffin was undoubtedly the Second World War. The massive mobilization of scientific resources needed to win and the discovery of war-winning inventions such as the atomic bomb and self-correcting bomb sight (with help from Norbert Wiener of MIT) convinced the nations of the world that the future was in large-scale funding and support of science as a continuous effort. Vannevar Bush, former president of MIT, and others pioneered the National Science Foundation and the military also invested heavily in its own research centers. Industrial labs such as those from Bell Labs, GE, Kodak, and others began dominating research as well. Interestingly, the first military investment in semiconductors coupled with research from Bell Labs led to what is now known as Silicon Valley.
thinkahol *

On "Consciousness: The Black Hole of Neuroscience" aka the "hard" problem | Thinkahol's... - 1 views

  •  
    What had been lacking until relatively recently was an overarching framework or theory through which to grasp the nature of consciousness. The lack of a general theory of consciousness, of how it comes to be that there is something that it is like to be, was really the last rational bastion of opposition to the scientific assertion that consciousness emerges from the brain.
thinkahol *

Why Big Media Is Going Nuclear Against The DMCA | TechCrunch - 0 views

  •  
    When Congress updated copyright laws and passed the Digital Millennium Copyright Act (DMCA) in 1998, it ushered an era of investment, innovation and job creation.  In the decade since, companies like Google, YouTube and Twitter have emerged thanks to the Act, but in the process, they have disrupted the business models and revenue streams of traditional media companies (TMCs).  Today, the TMCs are trying to fast-track a couple of bills in the House and Congress to reverse all of that. Through their lobbyists in Washington, D.C., media companies are trying to rewrite the DMCA through two new bills.  The content industry's lobbyists have forged ahead without any input from the technology industry, the one in the Senate is called Protect IP and the one in the House is called E-Parasites.  The E-Parasite law would kill the safe harbors of the DMCA and allow traditional media companies to attack emerging technology companies by cutting off their ability to transact and collect revenue, sort of what happened to Wikileaks, if you will.  This would scare VCs from investing in such tech firms, which in turn would destroy job creation. The technology industry is understandably alarmed by its implications, which include automatic blacklists for any site issued a takedown notice by copyright holders that would extend to payment providers and even search engines.   What is going on and how exactly did we get here?
thinkahol *

Kary Mullis' next-gen cure for killer infections | Video on TED.com - 0 views

  •  
    Drug-resistant bacteria kills, even in top hospitals. But now tough infections like staph and anthrax may be in for a surprise. Nobel-winning chemist Kary Mullis, who watched a friend die when powerful antibiotics failed, unveils a radical new cure that shows extraordinary promise.
thinkahol *

Students, Meet Your New Teacher, Mr. Robot - NYTimes.com - 0 views

  •  
    Computer scientists are developing machines that can teach people simple skills, like household tasks and vocabulary.
thinkahol *

Virtual walkers lead the way for robots - tech - 06 August 2010 - New Scientist - 0 views

  •  
    Given a few simple rules and some major computing power, animated characters adopt a human-like gait - and soon robots could too
thinkahol *

Eric Schmidt: Every 2 Days We Create As Much Information As We Did Up To 2003 - 0 views

  •  
    Today at the Techonomy conference in Lake Tahoe, CA, the first panel featured Google CEO Eric Schmidt. As moderator David Kirkpatrick was introducing him, he rattled off a massive stat. Every two days now we create as much information as we did from the dawn of civilization up until 2003, according to Schmidt. That's something like five exabytes of data, he says. Let me repeat that: we create as much information in two days now as we did from the dawn of man through 2003.
thinkahol *

Hooked on headphones? Personal listening devices can harm hearing, study finds - 0 views

  •  
    Personal listening devices like iPods have become increasingly popular among young -- and not-so-young -- people in recent years. But music played through headphones too loud or too long might pose a significant risk to hearing, according to a 24-year study of adolescent girls.
thinkahol *

A story bigger than Facebook - 0 views

  •  
    Much like a Facebook profile, " The Social Network " is made more appealing through some artful lies, well-chosen omissions and careful shading.
thinkahol *

U.S. Military Orders Less Dependence on Fossil Fuels - NYTimes.com - 0 views

  •  
    With insurgents attacking American fuel supply convoys into Afghanistan, the military is pushing renewable energy sources like solar power.
thinkahol *

NASA and DARPA Plan 'Hundred-Year Starship' To Bring Humans to Other Worlds And Leave T... - 0 views

  •  
    If NASA ever gets a clear directive for interplanetary exploration, a new Hundred-Year Starship could be their version of the Mayflower. And like the first pilgrims, Martian explorers might set sail with the knowledge they would never return home.
thinkahol *

Chapter 1. Government As a Platform - 0 views

  •  
    During the past 15 years, the World Wide Web has created remarkable new methods for harnessing the creativity of people in groups, and in the process has created powerful business models that are reshaping our economy. As the Web has undermined old media and software companies, it has demonstrated the enormous power of a new approach, often referred to as Web 2.0. In a nutshell: the secret to the success of bellwethers like Google, Amazon, eBay, Craigslist, Wikipedia, Facebook, and Twitter is that each of these sites, in its own way, has learned to harness the power of its users to add value to-no, more than that, to co-create-its offerings.
1 - 20 of 52 Next › Last »
Showing 20 items per page