Saturday, February 26, 2011

Scientists are cleared of misuse of data

An inquiry by a federal watchdog agency found no evidence that scientists at the National Oceanic and Atmospheric Administration manipulated climate data to buttress the evidence in support of global warming, officials said on Thursday.

The inquiry, by the Commerce Department’s inspector general, focused on e-mail messages between climate scientists that were stolen and circulated on the Internet in late 2009 (NOAA is part of the Commerce Department). Some of the e-mails involved scientists from NOAA.

Climate change skeptics contended that the correspondence showed that scientists were manipulating or withholding information to advance the theory that the earth is warming as a result of human activity.

In a report dated Feb. 18 and circulated by the Obama administration on Thursday, the inspector general said, “We did not find any evidence that NOAA inappropriately manipulated data.”

Nor did the report fault Jane Lubchenco, NOAA’s top official, for testifying to Congress that the correspondence did not undermine climate science.

The finding comes at a critical moment for NOAA as some newly empowered Republican House members seek to rein in the Environmental Protection Agency’s plans to regulate greenhouse gas emissions, often contending that the science underpinning global warming is flawed. NOAA is the federal agency tasked with monitoring climate data.

The inquiry into NOAA’s conduct was requested last May by Senator James M. Inhofe, Republican of Oklahoma, who has challenged the science underlying human-induced climate change. Mr. Inhofe was acting in response to the controversy over the e-mail messages, which were stolen from the Climatic Research Unit at the University of East Anglia in England, a major hub of climate research.

Mr. Inhofe asked the inspector general of the Commerce Department to investigate how NOAA scientists responded internally to the leaked e-mails. Of 1,073 messages, 289 were exchanges with NOAA scientists.

The inspector general reviewed the 1,073 e-mails, and interviewed Dr. Lubchenco and staff members about their exchanges. The report did not find scientific misconduct; it did however, challenge the agency over its handling of some Freedom of Information Act requests in 2007. And it noted the inappropriateness of e-mailing a collage cartoon depicting Senator Inhofe and five other climate skeptics marooned on a melting iceberg that passed between two NOAA scientists.

The report was not a review of the climate data itself. It joins a series of investigations by the British House of Commons, Pennsylvania State University, the InterAcademy Council and the National Research Council into the leaked e-mails that have exonerated the scientists involved of scientific wrongdoing.

NOAA welcomed the report, saying that it emphasized the soundness of its scientific procedures and the peer review process. “None of the investigations have found any evidence to question the ethics of our scientists or raise doubts about NOAA’s understanding of climate change science,” Mary Glackin, the agency’s deputy undersecretary for operations, said in a statement.

via nytimes

Friday, February 25, 2011

Virus hacks 1,50,000 cellphones in China

A mobile phone virus has infected 150,000 people in China allowing hackers to remotely monitor calls, according to the Beijing Times.

Named 'X Undercover', the virus takes advantage of existing vulnerabilities in smartphones by forcing the three-way calling service to secretly open.

It allows conversations and text messages to be monitored and copied after the virus breaks into the calling sequence, said Zou Shihong, a security expert with NetQin Mobile Inc.

The virus can also secretly video the phone's owner, retrieve call and text records as well as pinpoint the user's latest GPS position, reports the China Daily .

The software is marketed towards discovering a spouse's betrayal, a cheating employee or simply to monitor your child.

In China, it's against the law to bug and monitor personal information, according to mobile security experts who advise people to be cautious when clicking attachments in multimedia messages or allowing others to use their phone.

via timesofindia

Thursday, February 24, 2011

Scientists create plastic that conducts electricity

Plastics are well known as poor conductors of electricity and find many applications in industries and households as insulators. But now scientists have claimed that they have prepared a new class of plastic material that conducts electricity similar to metals.

Scientists placed a thin film of metal on a plastic sheet. They mixed it with polymer surface using an ion beam. In this experiment, researchers found that the material well conducted electricity. Research was done by an international team of scientists.

Scientists found that this method can be used to produce cheaper, stronger, flexible and above all, conducting plastic films. Prof Paul Meredith of University of Queensland said about the research, "What the team has been able to do here is use an ion beam to tune the properties of a plastic film so that it conducts electricity like the metals used in the electrical wires themselves, and even to act as a superconductor and pass electric current without resistance if cooled to low enough temperature."

Read also : US Scientists unveils Hummingbird Robot

When this newly created material is tested in industry standards and all claims of research team proved valid. In order to verify conductivity, team created electrical resistance thermometers of industrial standard. Then team created another platinum resistance thermometer of industrial standard. When tested thoroughly, this material gave even better results, with comparable accuracy.

A team member, Prof Adam Micolich of University of New South Wales explained the excellency of this material. Micolich said this material has an advantage that it can adopt all desirable properties of polymers like flexibility, robustness and easy availability with additional feature of conducting electricity. Conventional metals which are used as electricity conductors usually do not possess all above described properties, making this new material more valuable. Adams said this discovery will begin a new era of plastic electronics.

Read also : US Scientists Invent World's First 'Anti-Laser'

Researchers said their material opens a wide scope in electrical conductivity. Scientists are capable of manipulating conductivity levels in the thin film from zero to that of metals, making it highly usable while designing electricity based products.

via topnews

Wednesday, February 23, 2011

Google Releases Full Android 3.0 Honeycomb

Google on Tuesday announced that the full SDK for Android 3.0 is now available to developers.

"The APIs are final, and you can now develop apps targeting this new platform and publish them to Android Market," Xavier Ducrohet, Android SDK tech lead, wrote in a blog post.

Along with the new platform, Google said it is releasing updates to its SDK Tools (r10) and ADT Plugin for Eclipse (10.0.0). In the ADT Plugin, Google had added: new palette with categories and rendering previews; more accurate rendering of layouts that will more faithfully reflect how layouts look on devices; selection-sensitive action bars to manipulate View properties; zoom improvements, including fit to view, persistent scale, and keyboard access; and improved support for "merge" layouts and layouts with gesture overlays.

Google also added Traceview integration for easier profiling from ADT and tools for using the Renderscript graphics engine. More details are available on the Android 3.0 Platform Highlights page.

via pcmag

Tuesday, February 22, 2011

Inkjet printers inspire scientists to make skin

Ink-jet printing technology has inspired researchers to develop a new method of repairing damaged skin, by applying layers that are effectively used as a direct graft onto burns and other injuries.

A project at the Wake Forest Institute for Regenerative Medicine is being funded by the US Department of Defense, with the hope that it could one day be utilised on the battlefield. By utilising a portable bioprinter, the process would involve scanning the injury, sampling cells from the patient and printing a section of compatible skin.

Another similar technique currently being developed uses a three-dimensional printer combining donor cells, biofriendly gel and other materials to build cartilage.

Scientists from the Wake Forest Institute, Cornell University and the Medical University of South Carolina presented findings at an American Association for the Advancement of Science conference in Washington.

Dr Anthony Atal, director of the Wake Forest Institute, in North Carolina, said: "Once we make those new cells, the next step is to put the cells in the printer, on a cartridge, and print on the patient."

Once the new cells have been applied, which can take just a few minutes, they mature and form new skin. Researchers have suggested the technique could also be used to replace damaged organs and remove signs of ageing.

"Just imagine -- if you could take cells from a donor, culture them, put them into an ink and recreate an implant that is alive and made of the original cells from the donor -- how useful that would be in terms of avoiding rejection," commented Hod Lipson of Cornell University.

So far, experiments using cartilage have worked most effectively as it is resilient to the printing process. The basic technology uses a modified ink-jet style printer which can print in three dimensions, using cell cultures. Although the advances are certainly still in the early stages, with much greater research required before they can be practically deployed, demonstrations so far have shown great promise. Scientists have estimated that it will take more than five years before the research is complete.

via publicservice