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Researchers Boost Efficiency of Multi-Hop Wireless Networks

By Guest PostApril 27, 2012Science, Technologyalgorithm, data access, data transmission, multi hop, node, parth pathak, rudra dutta, wireless network, wireless node

Multi-hop wireless networks can provide data access for large and unconventional spaces, but they have long faced significant limits on the amount of data they can transmit. Now researchers from North Carolina State University have developed a more efficient data transmission approach that can boost the amount of data the networks can transmit by 20 to 80 percent.

“Our approach increases the average amount of data that can be transmitted within the network by at least 20 percent for networks with randomly placed nodes – and up to 80 percent if the nodes are positioned in clusters within the network,” says Dr. Rudra Dutta, an associate professor of computer science at NC State and co-author of a paper on the research. The approach also makes the network more energy efficient, which can extend the lifetime of the network if the nodes are battery-powered. (more…)

Locked RNA Editing Yields Odd Fly Behavior

By Guest PostApril 26, 2012Scienceabiotic factor, als, arthur sugden, asli sahin, brown university, cell, charles lawrence, dadar, enzyme adar, epilepsy, factor, fruit fly, function, genetic, jacquelyn dorsky, james jepson, lauren alpert, locking down, lou gehrigs disease, nucleus, organism, phenomenon, protein, rna, robert reenan, suicidal depression, temperature, wallflowers, yiannis savva

At the level of proteins, organisms can adapt by editing their RNA — and an editor can even edit itself. Brown University scientists working with fruit flies found that “locking down” the self-editing process at two extremes created some strange behaviors. They also found that the process is significantly affected by temperature.

PROVIDENCE, R.I. [Brown University] — Because a function of RNA is to be translated as the genetic instructions for the protein-making machinery of cells, RNA editing is the body’s way of fine-tuning the proteins it produces, allowing us to adapt. The enzyme ADAR, which does this editing job in the nervous system of creatures ranging from mice to men, even edits itself. In a new study that examined the self-editing process and locked it down at two extremes in fruit flies, Brown University scientists found some surprising insights into how this “fine-tuning of the fine-tuner” happens, including bizarre behavioral effects that come about when the self-editor can’t edit. (more…)

Tablet Competition Heats Up: Kindle Fire Captures more than Half of Android Tablet Market

By Guest PostApril 26, 2012Technologyacer picasso, amazon kindle, android tablet, apple ipad, california, Comscore, content, dell streak, device essentials product, digital device, florida, galaxy tab, illinois, internet traffic pattern, kindle fire, market, motorola xoom, non wifi traffic, serge matta, smartphone, tablets, texas, toshiba at100, udm data, us market, usage, verizon, web page

10″ Tablets Have 39 Percent Higher Content Consumption Rate than 7″ Tablets

comScore Device Essentials™ Introduces Unique Device and Local Market Reporting to Cross-Device Digital Traffic Measurement

RESTON, VA, April 26, 2012 – comScore, Inc., a leader in measuring the digital world, today announced the next generation of its Device Essentials™ service, offering new insight into global digital device usage. Based on comScore’s global Unified Digital Measurement (UDM) data, which utilizes census-level information from tagged web page content, Device Essentials includes reporting of brand and operating system for digital device and Internet traffic patterns (i.e. page views) from computers, smartphones, tablets, music, players, e-readers and gaming devices.

“comScore is excited to introduce our next generation Device Essentials product, which provides new insight into digital device usage and detailed reporting of traffic patterns within local markets,” said Serge Matta, comScore president of mobile & operator solutions. “These new insights are invaluable to all stakeholders in the mobile ecosystem as they seek to provide valuable services and optimize the mobile media experience for their customers.” (more…)

My Fair Physicist? Feminine Math, Science Role Models Do Not Motivate Girls

By Guest PostApril 26, 2012General, Sciencedenise sekaquaptewa, diana betz, engineering, excel, feminine qualities, field, jared wadley, mathematic, role model, Science, stem, stereotype, Technology, unfeminine, university of michigan, women

ANN ARBOR, Mich.— Women who excel in male-dominated science, technology, engineering and mathematic fields are often unjustly stereotyped as unfeminine.

However, if women are perceived as having feminine qualities, their success may actually decrease interest in these fields (usually referred to as “STEM”), particularly among young girls, according to a new University of Michigan study. (more…)

Ageing Population Could Boost Economy

By Guest PostApril 26, 2012Economyageing population, economic problems, life expectancy

Older people are a benefit, rather than a burden, to the economy and society according to a new report from the UCL School of Pharmacy. (more…)

Which Ads Are Winners? Your Brain Knows Better Than You Do

By Guest PostApril 26, 2012Scienceadvertisements, advertising campaigns, advertising dollars, advertising industry, anti smoking advertisements, brain data, persuasive advertising

Study on smokers’ brains may mark dawn of a new age in advertising

Advertisers and public health officials may be able to access hidden wisdom in the brain to more effectively sell their products and promote health and safety, UCLA neuroscientists report in the first study to use brain data to predict how large populations will respond to advertisements. (more…)

IBM Advances Big Data Analytics with Acquisition of Vivisimo

By Guest PostApril 25, 2012Technologyairbus, analyze, apache hadoop, arvind Krishna, big data, big data technology, cloudera, data, defense intelligence agency, ibm, ibm analytics, john kealey, navigation software, Pennsylvania, petabytes, pittsburgh, quintillion bytes, us air force, velocity, vivisimo, volume

Armonk, N.Y. – 25 Apr 2012: IBM today announced a definitive agreement to acquire Vivisimo, a leading provider of federated discovery and navigation software that helps organizations access and analyze big data across the enterprise. Vivisimo is a privately held company based in Pittsburgh, Pennsylvania. Financial terms were not disclosed.

Vivisimo software excels in capturing and delivering quality information across the broadest range of data sources, no matter what format it is, or where it resides. The software automates the discovery of data and helps employees navigate it with a single view across the enterprise, providing valuable insights that drive better decision-making for solving all operational challenges. (more…)

Not Your Parents’ Chem Labs

By Guest PostApril 25, 2012Educationacetone, anti-inflammatory, balance, benzene, borneol, carbon dioxide, carbon trachloride, catalyst, chalcone, chemical industry, chemistry, cloves, cookbook chemistry, cylindrical container, deane morrison, density, environmental problem, extract, fluid, general chemistry labs, graduated cylinder, grams per milliliter, greener, hazardous, industry, inorganic chemistry, james wollack, jane wissinger, josh jansen, lindsay nevalainen, liquid, marc hillmyer, michelle driessen, molecule, oil, organic chem, organic molecule, plastic, renewable resources, scale, sodium bromide, solution, solvent, university of minnesota, volume

‘Greener’ and more engaging experiments draw students in

As a college student, Michelle Driessen had an all-too-typical experience.

“I hated general chemistry,” she says. “I thought it was terribly boring.”

She had plenty of company. Experiments were all laid out in advance, and the goal seemed to be to get to a predetermined result without blowing up the glassware.

In the old days, “very few students appreciated the point of most general chemistry labs,” adds Driessen. “With cookbook chemistry, you couldn’t have anything go wrong or deviate [from what’s supposed to happen], but I find those things to be the most interesting part of science.” (more…)

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