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Issue no. 22, 2011 Published: Jun 24, 2011 |
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Netherlands makes net neutrality a law | High-speed 'space wedge' on track | Red wine's heart health chemical unlocked at last | New camera does away with focussing | Hand-hacking lets you pluck strings like a musical pro |
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| Netherlands makes net neutrality a law |
The Dutch may become the first in Europe to use web-based services on
smartphones for no extra charge. On 22 June, the Dutch Parliament passed
a law stopping mobile operators from blocking or charging extra for
voice calling done via the net. The bill must now pass through the
senate, but its passage is expected to be a formality. The move may
prove crucial in Europe's on-going debate over net neutrality.
The idea of net neutrality enshrines is that all internet traffic should
be treated equally, regardless of its type - be it video, audio, e-mail,
or the text of a web page. However, ISPs said they need to discriminate
because unchecked traffic from some applications, such as games or
file-sharing programs, can slow down their entire network for all
customers. As a result many ISPs throttle, block or charge extra for
many bandwidth hungry applications and content.
The EU endorses net neutrality principles, which state that
telecommunication companies may charge extra for some services, but need
to tell customers what they are doing. The European Commission has
adopted a 'wait and see' approach.
So far, the Netherlands is the second country to enshrine the net
neutrality concept into national law, after Chile. While advocates of
net neutrality idea praised the Dutch government for the move, the
country's telecommunications companies were disappointed. All major
mobile network providers, including Vodafone, T-Mobile and the former
Dutch state telecom Royal KPN NV, had lobbied against the bill, warning
that they may raise subscription prices if the law was passed. |
| BBC News
Jun 23, 2011 |
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| High-speed 'space wedge' on track |
The European Space Agency (ESA) is pressing ahead with its re-entry
demonstrator known as the IXV, which it expects to launch in 2013. This
distinctive wedge-shaped vehicle will be put at an altitude above 400km
from where it will begin its flight back to Earth.
Its suite of sensors should give engineers new insights into how objects
fall back through the atmosphere. Ultimately, the data should inform
better spacecraft design. Even probes sent to land on other worlds like
Mars should benefit from the knowledge. ESA signed an agreement at the
Paris Air Show that will lead to manufacture of the demonstrator by
Thales Alenia Space in Italy. The company's facility in Turin has spent
the past two years researching the concept.
The Intermediate Experimental Vehicle (IXV) is a car-sized, two-tonne
automated craft that can be seen as a follow-on to the Advanced Re-entry
Demonstrator flown by ESA in 1998. But whereas ARD was a traditional
cone-shaped object, IXV is very different; it has flaps and thrusters to
control its descent trajectory. A ceramic heatshield on its underside
will prevent IXV from burning up. The vehicle will launch from French
Guiana on ESA's forthcoming small rocket, Vega. The top stage of Vega
will put IXV on a sub-orbital trajectory around the Earth that will
bring the demonstrator down in Pacific. A parachute will be deployed to
bring it to a gentle splash-down.
The knowledge gained from the flight is expected to feed into materials
research and the computer models that are used to describe the energetic
physics that occurs when an object plunges through atmospheric gases at
several kilometres per second. |
| BBC News
Jun 23, 2011 |
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| Red wine's heart health chemical unlocked at last |
Fancy receiving the heart protecting abilities of red wine without
having to drink a glass every day? Soon you may be able to, thanks to
the synthesis of chemicals derived from resveratrol, the molecule
believed to give wine its protective powers. The chemicals have the
potential to fight many diseases, including cancer.
Plants make a huge variety of chemicals, called polyphenols, from
resveratrol to protect themselves against invaders, particularly fungi.
But they only make tiny amounts of each chemical, making it extremely
difficult for scientists to isolate and utilise them. The unstable
nature of resveratrol has also hindered attempts at building new
compounds from the chemical itself.
But now researchers at Columbia University in New York have found a way
around this: building polyphenols from compounds that resemble, but are
subtly different to, resveratrol. These differences make the process
much easier. Using these alternative starting materials, they have made
dozens of natural polyphenols, including vaticanol C, which is known to
kill cancer cells. |
| New Scientist / Nature
Jun 22, 2011 |
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| New camera does away with focussing |
News of a camera that promises to put an end to unfocussed photos
forever broke overnight, as Silicon Valley startup Lytro announced a
camera for consumers based on research at Stanford University.
The company is building a 'plenoptic' or 'light field' camera, which
features an array of small lenses between the conventional lens and the
sensor. That enables the camera to collect more light, from a wider
range of directions than a conventional one.
Researchers have been tinkering with the idea for years and shown that
the rich information captured that way allows for features cameras do
not have today. Lytro's camera will record the light information it
collects in a special file format that allows a photographer to choose
what depth they want to focus to on their computer.
Each of the micro-lenses in a plenoptic camera's array views a scene
from a slightly different angle and those views can be compared to
deduce the distance to the objects in front of the camera. |
| Technology Review
Jun 22, 2011 |
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| Hand-hacking lets you pluck strings like a musical pro |
Want to learn a musical instrument, but can't find the time to practise?
A new device can take control of your hand and teach you how to play a
tune. PossessedHand, being developed jointly by the University of Tokyo,
Japan, and Sony Computer Science Laboratories, electrically stimulates
the muscles in the forearm that move your fingers. A belt worn around
that part of the subject's arm contains 28 electrode pads, which flex
the joints between the three bones of each finger and the two bones of
the thumb, and provide two wrist movements.
Having successfully hijacked a hand, the researchers tried to teach it
how to play the koto, a traditional Japanese stringed instrument. Koto
players wear different picks on three fingers, but pluck the strings
with all five fingertips, so each finger produces a distinctive sound. A
koto score tells players which fingers should be moved and when, and
from this Tamaki and her team were able to generate instructions telling
their device how and when to stimulate the wearer's muscles.
PossessedHand does not generate enough force to pluck the koto strings,
but it could help novice players by teaching them the correct finger
movements. The team found that two beginner players made a total of four
timing errors when using PossessedHand, compared with 13 when playing
unassisted. After prompting from the device, the players also made one
less mistake about which finger to use.
As well as helping would-be musicians, PossessedHand could be used to
rehabilitate people who have suffered a stroke or other injury that
impairs muscle control. Therapists already use electrical muscle
stimulation to help these people, but existing non-invasive devices can
only achieve crude movements such as contracting the entire arm.
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| New Scientist
Jun 23, 2011 |
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