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A walk through poppy seeds yields a model for paleontology

By Guest PostMarch 31, 2015Sciencebatna, brown university, dinosaur footprint, dustin slees, hollywood bureau, hollywood white out, mathematiker, million years ago, negotiating power, phantom batna, power of counteroffers, stephen gatesy

What could a guineafowl strolling through a bed of poppy seeds have to do with a dinosaur footprint made 200 million years ago?

PROVIDENCE, R.I. [Brown University] — Stephen Gatesy, professor of ecology and evolutionary biology at Brown, and his former postdoctoral fellow Peter Falkingham, now at the Royal Veterinary College in the United Kingdom, used measurements from X-ray videos of the 3-D foot movement of a chicken-like bird as an input for a computer simulation of a substrate of poppy seeds. In this way, they could visualize the displacement of seeds through time and study the “birth” of tracks at different depths. The researchers then used the model to clarify previously unexplained features of a Jurassic dinosaur track. (more…)

WHACK! Study measures head blows in girls’ lacrosse

By Guest PostMarch 6, 2015Healthaubrey jones, brown university, co reading, concussion, daniela avelar, eading to children, gas jets, gasverlust von galaxien, gerhard hensler, gravitationstrog eines haufens, h alpha gas, meaning in metaphor, metaphorical context, rhode island hospital, scrs, skin conductance responses, sternbild virgo, traumatic brain injury, vicky lai, worst case scenario

As debate increases about whether female lacrosse players should wear headgear, a new study reports measurements of the accelerations that stick blows deliver to the head. The study also measured the dampening effect of various kinds of headgear.

PROVIDENCE, R.I. [Brown University] — Lacrosse players swing hard, which is why errant stick blows are the leading cause of concussion in girls’ and women’s lacrosse. In a new study, researchers measured how much the worst blows accelerate the head and how much different kinds of headgear could reduce those accelerations. (more…)

Questions for John Savage: How can the global Internet be governed?

By Guest PostFebruary 10, 2015Technologybrown university, dennis meurs, dongkyun dk kang, global internet, ICANN, internet, sarcoma microscopy device, stopping cancer, tesyte, united nations

Beyond managing domain names and associated IP addresses, the Internet does not have much governance. Technical experts from around the world met recently in Berlin to discuss options. John Savage, the An Wang Professor of Computer Science at Brown, presented a working paper on approaches to the Internet governance question. (more…)

Can the wave function of an electron be divided and trapped?

By Guest PostJanuary 21, 2015Sciencebala nair, brown university, electron, elementary particles, experience hypoxemia, gabriel araneda, machine learning system, monica vavilala, positionsbestimmung von objekten, prescience, quantum mechanics, scott lundberg, su in lee, trap, welleneffekt

Electrons are elementary particles — indivisible, unbreakable. But new research suggests the electron’s quantum state — the electron wave function — can be separated into many parts. That has some strange implications for the theory of quantum mechanics.

PROVIDENCE, R.I. [Brown University] — New research by physicists from Brown University puts the profound strangeness of quantum mechanics in a nutshell — or, more accurately, in a helium bubble. (more…)

Questions for Jim Kellner: Measuring the height of the world’s forests

By Guest PostJanuary 8, 2015EnvironmentAmazon, amazon basin, brown university, forests, height, hoehlenkunst, questions, richard stratt, ruocun john wang, storms, study of environment, tierdarstellungen in frankreich, world, yan zhao

If we know the height of the world’s forests, then we can estimate how much carbon they store. That will improve our understanding of how forests interact with the atmosphere and their role in mitigating climate change. To make those measurements, a collaboration including Brown University ecologist Jim Kellner is putting a sophisticated laser scanner on the International Space Station in 2019. (more…)

Bats bolster brain hypothesis, maybe technology, too

By Guest PostNovember 10, 2014Sciencebats, boda liu, brad willis, brown university, david echelmeyer, faenomenal, mantle composition, marjorie skubic, morbs, motion assessment, orthopaedics, physical therapists, seth sherman, signals, sonar, Technology, trent guess

Decades of research on how bats use echolocation to keep a focus on their targets not only lends support to a long debated neuroscience hypothesis about vision but also could lead to smarter sonar and radar technologies.

PROVIDENCE, R.I. [Brown University] — Amid a neuroscience debate about how people and animals focus on distinct objects within cluttered scenes, some of the newest and best evidence comes from the way bats “see” with their ears, according to a new paper in the Journal of Experimental Biology. In fact, the perception process in question could improve sonar and radar technology. (more…)

Elusive viral ‘machine’ architecture finally rendered

By Guest PostOctober 24, 2014Sciencealissa mittnik, architecture, biologists, black politicians, blacks in office, brown university, cells, chromosome, claudius stroehle, cosimo posth, DNA, e coli, fatma haron, heimat im plural, judy cha, re migration, silke meyer, trevon logan, tuerkische migration

Biologists have worked with the lambda virus as a model system for more than 50 years but they’ve never had an overarching picture of the molecular machines that allow it to insert or remove DNA from the cells that it infects. Now they can, thanks to an advance that highlights the intriguingly intricate way the virus accomplishes its genetic manipulations.

PROVIDENCE, R.I. [Brown University] — For half a century biologists have studied the way that the lambda virus parks DNA in the chromosome of a host E. coli bacterium and later extracts it as a model reaction of genetic recombination. But for all that time, they could never produce an overall depiction of the protein-DNA machines that carry out the work. In a pair of back-to-back papers in the Proceedings of the National Academy of Sciences, scientists produce those long-sought renderings and describe how they figured out what they should look like. (more…)

Virtual crowds produce real behavior insights

By Guest PostOctober 19, 2014Sciencealexander todorov, brown university, bundesbevoelkerung, elke groh, first impression, geologic anatomy, geological heart, image enhancement techniques, massnahmen der energiewende, navigation, old faithful, psychological function, sayles swarm, school of fish, sin mei wu, soko energiewende, vims lab, virtual environment, william warren, zufrieden

William Warren’s research group is advancing virtual reality technology in the service of studying the science of the swarm: how patterns of crowd movement emerge from individual behaviors. He described his work June 29 in a keynote address to a conference in Vancouver.

PROVIDENCE, R.I. [Brown University] — The cognitive scientists in the Virtual Environment Navigation lab at Brown University are not only advancing a frontier of behavioral research but also of technology. (more…)

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