Sister slaps Rempit girl

By WINNIE YEOH
winnie@thestar.com.my

GEORGE TOWN: A 16-year-old schoolgirl was slapped several times by her elder sister at the state police contingent headquarters here for being involved in illegal motorcycle racing.

The girl was among 112 Mat Rempit and pillion riders aged between 13 and 26 who were detained in an operation at Jalan Bukit Gambier in Gelugor from midnight till 3am.

Policemen and reporters were stunned when the elder sister, in her 20s, slapped her younger sister in front of onlookers at about 10.30am.

“You janji you akan bertukar! (you promised you’ll turn over a new leaf),” the sister was heard rebuking the girl.

The angry older sister slapping her sibling at the police headquarters in Penang Saturday.

 

Later, when the girl tried to salam (greet) her sister, the latter was heard shouting “jangan sentuh aku!” (don’t touch me!).

Earlier, the sister and her mother had pleaded with state public order and traffic chief Supt Wan Aziz Wan Husin to release the younger girl, who was a pillion rider.

She was also heard telling police that the younger girl had played truant from school.

The police also made the group push their machines for about 15km from Jalan Bukit Gambier to the headquarters at Jalan Penang.

The journey started at 4.30am and they took about three and a half hours to reach their destination.

The bikers being escorted by policemen on their 15km walk.

 

The motorcyclists were allowed to rest briefly after every 2km. Many were seen huffing and puffing and were also drenched in sweat.

Supt Wan Aziz said 74 summonses were issued to the 73 Mat Rempit for various offences.

“We carried out urine tests but none of them tested positive. We will issue letters to their parents informing them of their children’s racing activities,” he said.

Advance Could Change Modern Electronics

Science News

This image of an asymmetric MIM diode reflects a major advance in materials science that could lead to less costly and higher speed electronic products. (Credit: Image courtesy of Oregon State University)

ScienceDaily (Oct. 31, 2010) — Researchers at Oregon State University have solved a quest in fundamental material science that has eluded scientists since the 1960s, and could form the basis of a new approach to electronics.

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The discovery, just reported online in the professional journal Advanced Materials, outlines the creation for the first time of a high-performance "metal-insulator-metal" diode.

"Researchers have been trying to do this for decades, until now without success," said Douglas Keszler, a distinguished professor of chemistry at OSU. "Diodes made previously with other approaches always had poor yield and performance.

"This is a fundamental change in the way you could produce electronic products, at high speed on a huge scale at very low cost, even less than with conventional methods," Keszler said. "It's a basic way to eliminate the current speed limitations of electrons that have to move through materials."

A patent has been applied for on the new technology, university officials say. New companies, industries and high-tech jobs may ultimately emerge from this advance, they say.

The research was done in the Center for Green Materials Chemistry, and has been supported by the National Science Foundation, the Army Research Laboratory and the Oregon Nanoscience and Microtechnologies Institute.

Conventional electronics made with silicon-based materials work with transistors that help control the flow of electrons. Although fast and comparatively inexpensive, this approach is still limited by the speed with which electrons can move through these materials. And with the advent of ever-faster computers and more sophisticated products such as liquid crystal displays, current technologies are nearing the limit of what they can do, experts say.

By contrast, a metal-insulator-metal, or MIM diode can be used to perform some of the same functions, but in a fundamentally different way. In this system, the device is like a sandwich, with the insulator in the middle and two layers of metal above and below it. In order to function, the electron doesn't so much move through the materials as it "tunnels" through the insulator -- almost instantaneously appearing on the other side.

"When they first started to develop more sophisticated materials for the display industry, they knew this type of MIM diode was what they needed, but they couldn't make it work," Keszler said. "Now we can, and it could probably be used with a range of metals that are inexpensive and easily available, like copper, nickel or aluminum. It's also much simpler, less costly and easier to fabricate."

The findings were made by researchers in the OSU Department of Chemistry; School of Electrical Engineering and Computer Science; and School of Mechanical, Industrial and Manufacturing Engineering.
In the new study, the OSU scientists and engineers describe use of an "amorphous metal contact" as a technology that solves problems that previously plagued MIM diodes. The OSU diodes were made at relatively low temperatures with techniques that would lend themselves to manufacture of devices on a variety of substrates over large areas.

OSU researchers have been leaders in a number of important material science advances in recent years, including the field of transparent electronics. University scientists will do some initial work with the new technology in electronic displays, but many applications are possible, they say.

High speed computers and electronics that don't depend on transistors are possibilities. Also on the horizon are "energy harvesting" technologies such as the nighttime capture of re-radiated solar energy, a way to produce energy from the Earth as it cools during the night.

"For a long time, everyone has wanted something that takes us beyond silicon," Keszler said. "This could be a way to simply print electronics on a huge size scale even less expensively than we can now. And when the products begin to emerge the increase in speed of operation could be enormous."

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Story Source: Newscribe : get free news in real time

The above story is reprinted (with editorial adaptations by ScienceDaily staff) from materials provided by Oregon State University.

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 Journal Reference:

1. E. William Cowell, Nasir Alimardani, Christopher C. Knutson, John F. Conley, Douglas A. Keszler, Brady J. Gibbons, John F. Wager. Advancing MIM Electronics: Amorphous Metal Electrodes. Advanced Materials, 2010; DOI: 10.1002/adma.201002678 

See Also: 

Matter & Energy

• Materials Science
• Electronics
• Civil Engineering
• Graphene
• Spintronics
• Chemistry

Reference

• Materials science
• Electrical conduction
• Semiconductor
• Germanium

How to make CCTV hear as well as see?

New CCTV technology senses aggression from sound

By Dave Lee BBC World Service

 

Special software knows if certain loud noises pose a threat to security

 

On CCTV, no-one can hear you scream.

But technology from a UK company now means cameras can tell if you're being aggressive or calling for help - and will alert security guards straight away.

Cambridge firm Audio Analytic has produced software which it said can analyse the pitch, tone and intonation of noises and work out if they pose a threat.

"A lot of incidents just can't be picked up by video only systems," said Chris Mitchell, Audio Analytic's boss, on BBC World Service's Digital Planet.

Listen to the full story on Digital Planet

"For example in a hospital where somebody, or a nurse, is being threatened early hours in the morning - that's a very difficult thing for CCTV guards who monitor hundreds of channels worth of video signals on 20 screens or so to pick up."

The software goes beyond simply placing microphones onto cameras and listening in. By feeding hundreds of sample sounds into the system, the software can distinguish different threats from various sounds - and not just based on volume.

"We don't work with volume at all in the system because it's so related to how far somebody is from the microphone that it's not a useful metric.

"Our system picks out the most salient characteristics. These are things related to pitch, tone, intonation."

Coffee fury
Essentially, Mr Mitchell explained, the software contains hundreds of audio fingerprints, and as soon as a sound resembles a stored sample, the alarm is raised.

However, like any software early in its development, it does not always get it exactly right.

"At a test site we did, someone got annoyed at the coffee cup machine because it swallowed their coffee cup money. 

"From our point of view that's a true positive - we really detected them getting genuinely aggressive at a coffee cup machine - but from the security point of view, it's not a genuine detection."

These mishaps aside, the Mr Mitchell's team is confident the technology is ready to get out into the market.
"The false positive rates you get out of a system like ours are very low.

"Now, in security systems like a smoke detector we might have in our house, we know it has false positives - it goes off when you burn the toast.

"A certain number of false positives are beneficial so long as you have the security bandwidth to cope with them because you'd rather know about things that you think were an incident than just miss things you failed to be alerted to."

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