Category: Technology

VX Nerve Agent: The Deadly Weapon Engineered in Secret

By Carl Engelking | February 24, 2017 4:30 pm
gas-mask

A World War II-era contamination suit. (Credit: Shutterstock)

In January 1958, two medical officers at Porton Down, Britain’s military science facility, exposed their forearms to 50-microgram droplets of a substance called VX, which was a new, fast-acting nerve agent that could kill by seeping through the skin.

VX, short for “venomous agent X,” is tasteless, odorless and causes uncontrollable muscle contractions that eventually stop a person’s breathing within minutes. That experiment in 1958, according to University of Kent historian Ulf Schmidt, was perhaps the first human test of VX in the Western world. Read More

Energy Observer: Around the World on Renewables

By Dhananjay Khadilkar | February 2, 2017 11:58 am
energy-observer2

A computer-generated image of the Energy Observer in frigid waters. (Credit: Kadeg Boucher/Energy Observer)

For over two decades, 45-year-old, French documentary maker Jerome Delafosse has been diving into oceans the world over to film marine life, and he’s thrilled about his next expedition—above water. This spring, he will serve as chief explorer aboard the Energy Observer, a boat powered by the sun, wind and hydrogen. In a first-of-its-kind endeavor, Delafosse and his team plan to circumnavigate the globe over six years, visiting 101 ports in 50 countries, while relying entirely on renewable energy sources to reach their destinations.

Delafosse and his compatriot, 37-year-old Victorien Erussard, who is the boat’s captain, hope to renew the legend of this 30-meter-long, 13-meter-wide catamaran, which was built in 1982 and named Formule Tag. It won the Trophéé Jules Vernes for the team Enza New Zealand skippered by Sir Peter Blake. Currently, it’s being equipped with its new energy systems in the northwestern French port of Saint Malo. Read More

CATEGORIZED UNDER: Environment, Technology, Top Posts
MORE ABOUT: energy, sustainability

Who Isn’t Profiting Off the Backs of Researchers?

By Jon Tennant | February 1, 2017 12:33 pm

shutterstock_267762047

ResearchGate-gate isn’t quite as catchy as other scandals, but it is something we might be hearing more about in the future.

A recent article published by Sarah Bond at Forbes encouraged researchers to remove all of their articles from the for-profit company, Academia.edu. This has led to a wave of account deletions at the site, and also at ResearchGate, two sites dueling with each other to become the “Facebook for academics.”

The issue Bond raises is this: Why should companies generate profits from research with little transparency? It’s a good question.

This sounds suspiciously like the entire scholarly publishing ecosystem to me, and it is not clear why Academia.edu is in Bond’s crosshairs. For decades, for-profit companies have been making vast sums of money from researchers’ work, and often with profit margins in excess of 35 percent, greater than those even of Google (25 percent) Apple (29 percent) and even the largest oil companies like Rio Tinto (23 percent). Read More

CATEGORIZED UNDER: Technology, Top Posts
MORE ABOUT: open access

Archivists Want AI to Help Save, Analyze Everything Trump Says

By Carl Engelking | January 26, 2017 1:20 pm
shutterstock_353116925

(Credit: Joseph Sohm/Shutterstock)

A week hasn’t even passed since the inauguration, but television news is saturated with the flurry of activity from President Donald Trump’s administration. Trump, via Twitter, promised to launch an investigation into illegal voting and threatened to “send in the Feds” if Chicago police can’t fix the “carnage.” And that was just between Tuesday and Wednesday.

This heightened scrutiny compelled the Internet Archive, a repository of everything posted on the web, to launch its Trump Archive in early January. You, perhaps, digitally time-traveled with the Internet Archive’s Wayback Machine, or checked out free books, movies and software. The Trump Archive, which draws content from The Internet Archive’s TV News Archive, includes more than 520 hours of televised Trump speeches, interviews, debates and other broadcasts tracing back to 2009. It will continue to grow. Read More

CATEGORIZED UNDER: Technology, Top Posts

Welcome to the Hotel Automata

By Bobbie van der List | December 21, 2016 12:22 pm
hotel-checkin

At Henn-na, you can check in with a dinosaur. (Credit: Bobbie van der List)

The train ride from Nagasaki to the Huis Ten Bosch theme park in Japan takes about two hours. Along the way, I pass rice paddies and sleepy towns; this is not the place you’d expect to find the country’s first hotel staffed by robots.

When I arrive at the Huis Ten Bosch station, I’m surrounded by iconic Dutch architecture and buildings. The theme park was designed to give people in Japan a taste of Europe.

I take a shuttle bus to robot hotel Henn-na, located minutes from the theme park gates. Beside the hotel entrance, stands a Transformers-like robot, twice my size, which doesn’t seem to have any practical purpose whatsoever. Read More

CATEGORIZED UNDER: Technology, Top Posts
MORE ABOUT: robots

Outsmarting the Art of Camouflage

By Lakshman Prasad | November 2, 2016 12:28 pm
copperhead-snake

Copperhead Snake on Dead Leaves, watercolor by Abbott Handerson Thayer (1849-1921). (Courtesy: Smithsonian American Art Museum)

When the American painter Abbott H. Thayer published his book Concealing-Coloration in the Animal Kingdom in 1909, he put forth the hypothesis that animals’ colors served one function and one function only: to camouflage.

While that theory has since been disproven (animal colors also play a role in threatening predators and attracting mates), his work made a significant impact on our understanding of camouflage and how it could be used in war. During World War I, both the French and the German militaries relied on his book to develop designs for camouflaging their soldiers, and it became required reading for the U.S. Army’s newly launched unit of camoufleurs. Thayer’s work noted how nature “obliterates” contrast by both blending into its environment and disrupting it by using arbitrary patterns to break up outlines. Read More

CATEGORIZED UNDER: Technology, Top Posts

The End of Traffic Jams

By Lorna Wilson | August 31, 2016 11:39 am
traffic jam

(Credit: chuyuss/Shutterstock)

Being stuck in miles of halted traffic is not a relaxing way to start or finish a summer holiday. And as we crawl along the road, our views blocked by by slow-moving roofboxes and caravans, many of us will fantasize about a future free of traffic jams.

As a mathematician and motorist, I view traffic as a complex system, consisting of many interacting agents including cars, trucks, cyclists and pedestrians. Sometimes these agents interact in a free-flowing way and at other (infuriating) times they simply grind to a halt. All scenarios can be examined – and hopefully improved – using mathematical modeling, a way of describing the world in the language of maths. Read More

CATEGORIZED UNDER: Technology, Top Posts
MORE ABOUT: transportation

What We’re Learning from the World’s Oldest Calculator

By Mike Edmunds, Cardiff University | July 21, 2016 2:58 pm
Antikythera mechanism

The Antikythera mechanism (Credit: Wikimedia Commons)

When we talk of the history of computers, most of us will refer to the evolution of the modern digital desktop PC, charting the decades-long developments by the likes of Apple and Microsoft. What many don’t consider, however, is that computers have been around much longer. In fact, they date back millennia, to a time when they were analogue creations.

Today, the world’s oldest known “computer” is the Antikythera mechanism, a severely corroded bronze artifact which was found at the beginning of the 20th Century, in the remains of a shipwreck near the Mediterranean island of Antikythera. It wasn’t until the 1970s that the importance of the Antikythera mechanism was discovered, when radiography revealed that the device is in fact a complex mechanism of at least 30 gear wheels. Read More

CATEGORIZED UNDER: Living World, Technology, Top Posts
MORE ABOUT: archaeology, computers

Digital Deception: How to Spot a Lie Online

By Tom van Laer, City University London | June 29, 2016 9:58 am
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(Credit: albund/Shutterstock)

There are three things you can be sure of in life: death, taxes – and lying. The latter certainly appears to have been borne out by the UK’s recent Brexit referendum, with a number of the Leave campaign’s pledges looking more like porkie pies than solid truths.

But from internet advertising, visa applications and academic articles to political blogs, insurance claims and dating profiles, there are countless places we can tell digital lies. So how can one go about spotting these online fibs? Well, Stephan Ludwig from the University of Westminster, Ko de Ruyter from City University London’s Cass Business School, Mike Friedman of the Catholic University of Louvain, and yours truly have developed a digital lie detector – and it can uncover a whole host of internet untruths.

In our new research, we used linguistic cues to compare tens of thousands of emails pre-identified as lies with those known to be truthful. And from this comparison, we developed a text analytic algorithm that can detect deception. It works on three levels.

1. Word Use

Keyword searches can be a reasonable approach when dealing with large amounts of digital data. So, we first uncovered differences in word usage between the two document sets. These differences identify text that is likely to contain a lie. We found that individuals who lie generally use fewer personal pronouns, such as I, you, and he/she, and more adjectives, such as brilliant, fearless, and sublime. They also use fewer first-person singular pronouns, such as I, me, mine, with discrepancy words, such as could, should, would, as well as more second-person pronouns (you, your) with achievement words (earn, hero, win).

Fewer personal pronouns indicate an author’s attempt to dissociate themselves from their words, while using more adjectives is an attempt to distract from the lie through a flurry of superfluous descriptions. Fewer first-person singular pronouns combined with discrepancy words indicate a lack of subtlety and a positive self-image, while more second-person pronouns combined with achievement words indicate an attempt to flatter recipients. We therefore included these combinations of search terms in our algorithm.

2. Structure Scrutiny

Another part of the solution lay in analyzing the variance of cognitive process words, such as cause, because, know and ought – and we identified a relationship between structure words and lies.

Liars cannot generate deceptive emails from actual memory so they avoid spontaneity to evade detection. That does not mean that liars use more cognitive process words overall than people who are telling the truth, but they do include these words more consistently. For example, they tend to connect every sentence to the next – “we know this happened because of this, because this ought to be the case”. Our algorithm detects such usage of process words in communications.

3. Cross-email Approach

We also studied the ways in which a sender of an email alters their linguistic style while exchanging a number of emails with someone else. This part of the study revealed that as the exchange went on, the more the sender tended to use the function words that the receiver was using.

Looking for love: but are they lying? (Credit: Shutterstock)

Function words are words that contribute to the syntax, or structure, rather than the meaning of a sentence – for example an, am, to. And senders revised the linguistic style of their messages to match that of the receiver. As a consequence, our algorithm identifies and collects such matching.

Exciting Applications

Consumer watchdogs can use this technology to assign a “possibly lying” score to advertisements of a dubious nature. Security companies and national border forces can use the algorithm to assess documents, such as visa applications and landing cards, to better monitor compliance with access and entry rules and regulations. Secretaries of higher education exam committees and editors of academic journals can improve their proofing tools for automatically checking student theses and academic articles for plagiarism.

In fact, the potential applications go on and on. Political blogs can successfully monitor their social media interactions for textual anomalies, while dating and review sites can classify messages submitted by users on the basis of their “possibly lying” score. Insurance companies can make better use of their time and resources available for claim auditing. Accountants, tax advisers, and forensic specialists can investigate financial statements and tax claims and find deceptive smoking guns through our algorithm.

Humans are startlingly bad at consciously detecting deception. Indeed, human accuracy when it comes to spotting a lie is just 54 percent, hardly better than chance. Our digital lie detector, meanwhile, is 70 percent accurate. It can be put to work to fight fraud wherever it occurs in computerized content and as the technology evolves, its Pinocchio warnings can be wholly automated and its accuracy will increase even further. Just as Pinocchio’s nose reflexively signaled falsehood, so does our digital lie detector. Fibbers beware.

The Conversation

This article was originally published on The Conversation. Read the original article.

CATEGORIZED UNDER: Technology, Top Posts

A Sneak Peek at the First Cyborg Olympics

By Caroline Barlott | June 22, 2016 7:30 am
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OPRA Osseointegratio, a Sweden, designed a surgically implanted prosthetic limb, which is in human trials. (Credit: ETH Zurich)

While working as a professor in the sensory-motor systems lab at the Swiss Federal Institute of Technology in Zurich (ETH), Robert Riener noticed a need for assistive devices that would better meet the challenge of helping people with daily life. He knew there were solutions, but that it would require motivating developers to rise to the challenge.

So, Riener created Cybathlon, the first cyborg Olympics where teams from all over the world will participate in races on Oct. 8 in Zurich that will test how well their devices perform routine tasks. Teams will compete in six different categories that will push their assistive devices to the limit on courses developed carefully over three years by physicians, developers and the people who use the technology. Eighty teams have signed up so far.

Riener wants the event to emphasize how important it is for man and machine to work together—so participants will be called pilots rather than athletes, reflecting the role of the assistive technology.

“The goal is to push the development in the direction of technology that is capable of performing day-to-day tasks. And that way, there will an improvement in the future life of the person using the device,” says Riener.

Here’s a look at events that will be featured in the first cyborg Olympics.

Brain-Computer Interface Race

brain-computer-interface

A pilot plays a video game with a brain-computer interface during a Cybathlon rehearsal last year. (Credit: ETH Zurich)

A woman sits at a computer while wearing a cap that has several electrodes attached to her head, wires cascading down her back waves. She’s playing a video game, but instead of using her hands, she’s using only her thoughts to drive a brain-computer interface system.

During the Cybathlon, participants with complete or severely impaired motor function will use their thoughts to control an avatar in a racing video game. The winner will be the first to complete the race, maneuvering an avatar over obstacles and accelerating to the finish line. An algorithm will help determine which team’s interface performed the best. Brain-computer interface devices are a key technologies that will allow people to control future prostheses with their minds.

Functional Electrical Stimulation Bike Race

electric-stimulation

Electrodes placed on the outside of the legs stimulate the muscles, giving racers the leg-power they need during a bike race. (Credit: ETH Zurich)

Functional Electrical Stimulation (FES) is a technique that sends electrical impulses to paralyzed individuals’ muscles to trigger movement. FES can help build muscle mass, increase blood circulation and and improve cardiovascular health. At Cybathlon, paralyzed bike racers will rely on FES to complete about five laps around a racetrack, equalling about 2,200 feet — first to the finish wins. Electrodes will deliver electrical stimulation to their muscles, giving them the leg-power to pedal their bikes. The pilots can actually control how much current they send to their muscles, so balancing speed and stamina will be key to winning the race.

Generally, electrodes are placed on a persons’s skin, but one team—the Center for Advanced Platform Technology from Cleveland—will surgically implant them closer to nerves where they can reach more fiber, reduce muscle fatigue and increase precision. Members of Team Cleveland developed implants — over the course of two decades — that allow a person with paraplegia to stand, perform leg lifts and take steps. For Cybathlon, they’ll adapt their system for bike riding.

Powered Arm Prosthesis Race

arm-prosthesis

The prosthetic arm from the M.A.S.S. Impact team. (Credit: ETH Zurich)

The powered arm prosthesis race will show just how important performing basic, daily tasks are to Riener. Pilots with arm amputations will need to carry a tray of breakfast items, for example, and then prepare a meal by opening a jar of jam, slicing bread and putting butter on the bread — tasks that are easy to take for granted. Pinning clothing on a clothes line and putting together a puzzle with pieces that will each require a different type of grip are also challenges in this event.

A prosthetic hand created by the M.A.S.S. Impact team from Simon Fraser University in Canada is a unique design that uses sensors and algorithms to recognize a grip pattern, and users  can control the bionic hand in small, precise movements. The system also generates computer models to improve function over time. Last year, organizers held a Cybathlon rehearsal last year, and Riener was especially impressed by OPRA Osseointegratio, a Swedish team that designed a surgically implanted hand controlled by a person voluntarily contracting his muscles. The technology is currently in human trials, and the team’s pilot is the first recipient.

Powered Leg Prosthesis Race

prosthetic-leg

Designing prostheses for lower limbs presents an entirely different set of challenges. Riener hopes to see prosthetic legs at the Cybathlon that can handle uneven terrain, which has been a challenge in the past. During the leg prosthesis race, pilots will compete on parallel tracks through obstacle courses laden with beams, stones, stairs and slopes. Right now, only the most advanced prostheses can handle these challenges — many are heavy and aren’t powerful enough.

Team Össur will bring four different prosthetic legs to the competition. Riener says this team in particular is making incredible advancements in the field. He’s particularly impressed with their commercially available motorized knee prosthesis, as he says it’s more robust and reliable than many past devices. The team is also entering a powered leg prosthesis that is an upgrade to the powered knee and is still a prototype stage; it uses motorized joints to help achieve a natural gait.

Powered Exoskeleton Race

(Credit: ETH Zurich)

(Credit: ETH Zurich)

Exoskeletons are worn around the legs to help those with paraplegia walk or even climb stairs. While they’ve been used by physiotherapists in hospitals to improve the health of patients with paralyzed legs, Riener says many designs are still bulky and difficult to use on a daily basis. There are about six companies around the world with exoskeletons on the market, and more prototypes are being developed in research labs around the world.

The Cybathlon exoskeleton event will include tasks that are particularly difficult for people using this technology to accomplish, such as stepping over stones and walking up a slope.

“With these challenges, we’re hoping to see more lifelike exoskeletons with more movability,” says Riener.

Powered Wheelchair Race

(Credit: ETH Zurich)

(Credit: ETH Zurich)

Those who use wheelchairs encounter challenges that other people might take for granted. Riener is excited to see how powered wheelchairs are evolving, getting smaller and more capable—in some cases even climbing stairs.

“At Cybathlon, they will have to fit beneath a table, go up a steep ramp, open a door and then close it again, and go down a steep ramp,” says Riener.

Scewo, a team from ETH Zurich developed a wheelchair that balances on two wheels like a Segway and can use a chain to climb up stairs or steep ramps.

While some of the teams are entering technology that is already on the market, Riener is especially excited to see new innovations that have been created from scratch, specifically for Cybathlon.

“It’s exciting to reach a large audience to talk about issues related to people with disabilities,” he says.

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