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Using Bayesian statistics to rank Wikipedia entries

Algorithm outperforms a human user by up to 23 percent in correctly classifying quality rank of articles, say researchers
August 8, 2014

(Credit: Wikimedia Commons)

Computer scientists in China have devised a software algorithm based on Bayesian statistics that can automatically check a Wikipedia entry and rank it by its quality.

Bayesian analysis is commonly used to assess the content of emails and determine the probability that the content is spam or junk mail, and if so, filter it from the user’s inbox if the probability is high.

Writing in the… read more

Using artificial intelligence to chart the universe

September 25, 2012

cosmic_web

Astronomers at the Leibniz Institute for Astrophysics have developed an AI algorithm to help them chart and explain the distribution of dark matter with unprecedented accuracy.

The algorithm starts with the fluctuations in the density of the universe seen in the cosmic microwave background radiation (CMBR), then models the way matter collapses into today’s galaxies over the subsequent 13 billion years. The results of the algorithm are… read more

Using ant-based swarm intelligence for materials handling

March 26, 2012

Swarming and transporting

Researchers at the Fraunhofer Institute for Material Flow and Logistics IML in Dortmund, Germany plan to use “swarm intelligence” for materials handling. Their Multishuttle Moves — swarms of autonomous transport shuttles — could provide an alternative to traditional systems.

The scientists have assembled a testing facility with a swarm of 50 autonomous devices. “In the future, transport systems should be able to perform all of these tasks autonomously,… read more

Using animal training techniques to teach robots household chores

May 18, 2016

Virtual environments in which trainers gave directions to robot dog. (credit: Washington State University)

Researchers at Washington State University are using ideas from animal training to help non-expert users teach robots how to do desired tasks.

As robots become more pervasive in society, humans will want them to do chores like cleaning house or cooking. But to get a robot started on a task, people who aren’t computer programmers will have to give it instructions. “So we needed to provide a… read more

Using an electron beam to manipulate nanoparticles

January 16, 2013

How to trap a gold nanoparticle in an environmental cell: an electron beam passes through a silicon nitride window and grabs the nanoparticle (credit: Haimei Zheng et al./Lawrence Berkeley National Laboratory)

Scientists from Berkeley Lab and the National University of Singapore have developed a way to manipulate nanoparticles using an electron beam.

They used an electron beam from a transmission electron microscope to trap gold nanoparticles and direct their movement, and to assemble several nanoparticles into a tight cluster.

They also imaged the nanoparticles as they manipulated them.

Based on their results, the scientists… read more

Using a Robot to Teach Human Social Skills

July 10, 2007

A humanoid robot designed to teach autistic children social skills has begun testing in British schools.

Known as KASPAR (Kinesics and Synchronisation in Personal Assistant Robotics), the $4.33 million bot smiles, simulates surprise and sadness, gesticulates and, the researchers hope, will encourage social interaction among autistic children.

Using a Poison to Turn Sunlight into Food

August 19, 2008

Red slime mat made up of an extremophile bacteria in hot springs in Mono Lake, California use arsenic rather than water to carry energy during photosynthesis, U.S. Geological Survey researchers have found.

By analyzing the genetic material of the microbe, the researchers have determined that this is a primitive process, going back at least three billion years. That could mean that arsenic-based photosynthesis predates the oxygen-producing variety that enables… read more

Using a light touch to measure protein bonds

July 1, 2008

MIT researchers have used optical tweezers (light beams) to achieve a precise measurement of the strength of bonds between two protein molecules important in cell machinery.

They focused on proteins that bind to actin filaments, an important component of the cytoskeleton that provide structural support, help the cell crawl across a surface or sustain a load (in muscle cells).

They found the force holding the proteins together is… read more

Using a CT scan and 3D printer to recreate a fossil

November 21, 2013

3d_print_of_fossil

Data from computed tomography (CT) scans can be used with 3D printers to make accurate copies of fossilized bones, according to new research published online in the journal Radiology.

Fossils are often stored in plaster casts, or jackets, to protect them from damage. Getting information about a fossil typically requires the removal of the plaster and all the sediment surrounding it, which can lead to loss of material or… read more

Using 3D printing to explain theoretical physics

December 10, 2013

3d_printed_forest_fire_model

Students may soon be able to reach out and touch some of the theoretical concepts they are taught in their physics classes thanks to a novel idea devised by a group of researchers from Imperial College London.

In new study published December 9 in the journal EPL, the researchers successfully demonstrated how complex theoretical physics can be transformed into a physical object using a 3D printer.… read more

Use the force, bacteria

January 7, 2007

A newly discovered bacterium that infests the mitochondria of tick ova has been named Midichloria mitochondrii, in honor of George Lucas’ invention for his Star Wars movies.

According to Lucas, the mysterious intracellular organisms apparently reside within the cells of almost all living things and communicate with the Force.

Use of Implanted Patient-Data Chips Stirs Debate on Medicine vs. Privacy

March 19, 2006

Some doctors are welcoming VeriChip technology as an exciting innovation that will speed care and prevent errors.

Emergency-room doctors could scan unconscious or incoherent patients to quickly check their blood type and find out if they are taking any medications or have allergies or other medical conditions. Nurses could identify family members and determine whether patients are organ donors or have living wills. Surgeons could scan patients on the… read more

USC’s ‘print-a-house’ construction technology

August 29, 2008

University of Southern California engineers are developing a scale-up of the rapid prototyping machines now widely used in industry to allow Caterpillar to “print out” concrete houses.

The “Contour Crafting” automated construction system may one day be able to build full-scale houses in hours.

USB 3.0 To Boost Peripherals to Multi-Gigabit Speeds

September 19, 2007

The new “SuperSpeed” USB spec will provide a 10X boost in transfer rate (from 480-Mbits/s in USB 2.0 to 4.8 Gbits/s in USB 3.0), while dramatically lowering power consumption, with broad deployment by 2010.

One example of their speed goals is to transfer a 27GB HD movie to a portable device in 70 seconds. The same thing would take 15 minutes or more with HighSpeed USB (2.0).

US, Russian plans for exploring Mars

November 8, 2011

Red Dragon

SpaceX says their Dragon capsule, which is set to make its first test flight to the ISS later this month, could be dispatched to Mars, drastically cutting the cost of exploration on the red planet, Nature News reports.

The company is working with researchers at NASA Ames Research Center on a proposal for a first “Red Dragon” mission.

The most challenging part of any… read more

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