Yusran Adhitya Kurniawan’s Blog

Tag: Internet

Terrible Effects of Electrocuted

by on May.24, 2010, under Information Technology

electricityShocking by electricity can be a scary thing for anyone, because if the high-voltage or prolonged can cause death. Any injury suffered by the people who electrocuted?

Electricity is one of the requirements for helping a variety of activities. But if someone is not careful in its use, it is actually useful things could endanger yourself and those around him.

As quoted from HowStuffWorks, human body is a conductor (electrically conductive) that is very good, because about 70 percent of the human body consists of water.

This makes it very easy flow of electricity through the human body in seconds. The higher the electric current and long accepted by the body, the more serious injuries caused.

Regardless of the electricity received by the body still cause shock or vibration. But this stress can sometimes be felt by someone but there is also not felt by the body.

Minimal small electrical shocks can cause a person experience headaches, fatigue or muscle spasms, unconsciousness, and shortness of breath while temporary.

But if it lasts longer or in higher voltage can cause burns, vision loss, brain damage, heart attacks, stop breathing and death.

If someone in shock for a moment, then only will cause pain. But if the voltage is high enough can also cause fatal, although only a few seconds. For example if the flow reaches 100 mA, the possibility can cause death in just over two seconds.

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D’Genetic of Technology Moving From Lab to Medical Practices

by on May.24, 2010, under Information Technology

technology2In January, practicing doctors and doctors-to-be entered a new class at the Medical College of Wisconsin with a futuristic name, “Translational Genetics.” The idea was simpler than it sounded: We are fast approaching the time when doctors will use our genetic profiles to treat us.

One of the students was Kevin Regner, a practicing kidney doctor at Froedtert Hospital, who had been hearing for years, “Personalized medicine is just around the corner.” Doctors will tailor treatments to each patient's genes and the risks they reveal. It will all be routine.

Regner had doubts. Sequencing of the first human genome in 2003 took more than a decade and cost about $600 million – an effort too herculean to assume doctors would repeat it with patients and insurance companies would foot the bill anytime soon.

But Regner was in for a surprise. As he and his classmates listened, Howard Jacob, head of the college's Human and Molecular Genetics Center, described what has happened since completion of the genome project. He showed two photos: a machine that helped sequence the first human genome in 2003, and then a machine the Medical College has today. The new model does the work of 200 of the old ones; it can sequence a human genome in a few months for several hundred thousand dollars.

And the Medical College has already ordered next-generation sequencers. Within less than a decade, a complete genetic blueprint could be attainable in 15 minutes for as little as $100.

Moreover, in a case that suggests the technology is beginning the journey from research to medical practice, Jacob described how he and his colleagues used a targeted version of gene-sequencing to diagnose and treat an apparently new disease in a young boy at Children's Hospital of Wisconsin.

In the audience, Regner had a moment of recognition. “It's likely we'll see this kind of personalized medicine in my lifetime,” he said, “and in the course of my medical practice.”

Med schools join in

Medical schools are coming to this recognition as well – albeit too slowly for some. Already, companies such as 23andMe and Navigenics are selling personal genetics tests, offering consumers the chance to learn their risks for dozens of diseases. This month pharmacy giant Walgreens announced it would sell a personal genetic test in thousands of stores across the country, though the company put the plans on hold after federal regulators said the tests had not been approved.

“More and more patients are going to be walking into their doctor's office with genes sequenced,” said George Church, a genetics professor at Harvard Medical School and one of the pioneers of gene sequencing. “Very few doctors even know where to refer them.”

In years to come, however, some say gene-sequencing and analysis could take a place in the medical tool kit alongside such fundamentals as anatomy and family history.

Eric J. Topol, director of the Scripps Translational Science Institute in La Jolla, Calif., said there are now genetic tests that determine how patients will respond to specific medications such as Plavix, a widely used blood clot prevention drug. Some tests even reveal appropriate dosages. Yet when researchers surveyed more than 10,000 physicians, just 10% said they had the necessary information and training to use the tests, according to a report in October by the American Medical Association and Medco.

“The resistance to change in medicine, which is profound,” Topol said, “is something that is part lack of education.”

Some of the country's leading medical schools and institutions have launched programs to close the education gap.

• At Harvard Medical School and Beth Israel Deaconess Medical Center, doctors started a first-in-the-nation program last fall to teach pathology residents about genomics and to train them to interpret genetic data. Residents all had the option of using a Navigenics test to search their own genes for common mutations. Twelve out of 17 volunteered for the testing and discussed the results with genetics counselors, said Mark Boguski, an associate professor at Harvard Medical School who works in Beth Israel's pathology department.

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New Roaming in Technology Turns To Wi-Fi into 4G

by on May.16, 2010, under Information Technology

4gLund, Sweden – Swedish startup Anyfi Networks today came out of stealth mode to present Anyfi.net, a Wi-Fi roaming technology they hope will shake up the mobile broadband industry. This new technology lets an Internet service provider offer the same Wi-Fi user experience both at home and on the go.

“Until now Wi-Fi hotspots have been difficult to use and inherently insecure. Our solution works with any Wi-Fi device out of the box and provides fully automatic WPA security” said Björn Smedman, CEO.

The trick is combining Wi-Fi with IP, Internet Protocol, to break the tie between logical network and physical infrastructure, much in the same way as Voice over IP separates your phone service from the physical line.

“You can think of it as Wi-Fi over IP” explained Björn Smedman. “Our cloud based matchmaking service keeps track of each device's favorite network and makes sure it is available from the closest access point. By forwarding the raw Wi-Fi radio traffic over the Internet we can ensure security, even if an attacker is in control of the access point.”

According to the company this high level of security is one of the key features making the technology suitable for integration in modems of various types, and this is what makes it potentially disruptive, effectively turning Wi-Fi into a full-blown 4G technology.

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New Technology To Give Internet Advertising a Boost

by on Apr.22, 2010, under Information Technology

internet_1Scientists at the University of Toronto have developed a new technology that promises to give a boost to Internet advertising.

Placing Internet ads on websites easier and more profitable in the future as the latest technology allows ads to be resized to fit any available website space.

Internet ads are currently only available in three or four specific sizes, meaning websites must be designed around the ads. The size restrictions greatly limit ad placement options and affect the way ads look on devices such as the iPhone and iPad.

However, the new technology, developed by UofT Electrical and Computer Engineering associate professor Parham Aarabi, enables ads to be resized automatically to conform to any web space.

“Currently, a significant portion of usable website spaces are not used for advertising because the standard size ads don't fit,” said Aarabi.

“Our technology is the first ever to conform ads to any available website space in an automated and practical way. Essentially, advertisers provide a single ad at a preset size, and our technology can, automatically and dynamically, regenerate the ad at any size, resolution, or aspect ratio by taking into account the contents of the ad, relevant text, and other information,” Aarabi added.

He added that the technology would translate into profit because formerly wasted web space can be used for advertising.

“Given an online advertising market worth billions of dollars, this technology could significantly increase revenues for publishers, and create new opportunities for advertisers,” Aarabi said.The concept will be presented at the World Wide Web 2010 Conference in late April in Raleigh, North Carolina.

source: http:///news.oneindia.in

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New Technology Brings Blind Computing Into 21st Century

by on Mar.31, 2010, under Information Technology

A new technology that creates full-page, refreshable Braille displays promises to bring 21st century computing to the blind.

Today’s Braille displays can show just one line of text at a time, making it difficult for those without eyesight to perform common online tasks such as browsing the Internet. And they also are often expensive, carrying an average price tag of $8,000.

Even so, “this one-line display is very helpful,” said Peichun Yang, who is leading the effort to develop the new Braille technology at North Carolina State University.

“If you add another line, it’s a tremendous help. A full page … that’s another world,” said Yang, who lost his eyesight more than 10 years ago and is himself blind.

The new technology would allow a full page of text at a time, refresh in milliseconds and display images in the same way that images and text are displayed — as raised bumps on a tactile display.

The key to the new Braille display is what the researchers refer to as the “hydraulic and latching mechanism.”

Here’s how it works:  Similar to pixels in visual displays, these Braille displays would be made up of thousands of dots that are raised like bumps to form Braille letters and numbers.

Each dot can be thought of as a tiny container made out of a special shape-shifting material that is filled with liquid. When electricity is applied, the sides of this container bend and push the liquid filler upward, creating a tiny bulge at the top of the container.

braille displayThis kind of shape-changing material has been tried before but with little success until now. The main challenge has been with “latching” or locking the dot in place once it’s raised, Yang told TechNewsDaily.

The latch allows the raised dots to stay put when a blind person is touching them.

Yang’s solution involved a pin attached to a support block, which inflates with the liquid, pinning it in place. When it’s time to refresh the page, the pin gets pulled down and the dot deflates.

Working prototypes of the new Braille display should be available in one to two years, with the first commercial version ready for customers in five years, Yang said.

Yang and his colleagues presented their research earlier this month at the International Conference on Electroactive Polymer Actuators and Devices in San Diego.

Source: www.technewsdaily.com

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