Jim Crutchfield wants to teach a machine to “see” in a new way, discovering patterns that evolve over time instead of recognizing patterns based on a stored template.
It sounds like an easy task – after all, any animal with basic vision can see a moving object, decide whether it is food or a threat and react accordingly, but what comes easily to a scallop is a challenge for the world’s biggest supercomputers.
CORI at Lawrence Berkeley Lab is one of the world’s fastest computers. It is named after Gerty Theresa Cori, the first woman to win a Nobel Prize for Physiology or Medicine. (NERSC/LBL photo)
By Jenna Gallegos
Scientists at the University of California, Davis have discovered that DNA sequences thought to be essential for gene activity can be expendable. Sequences once called junk sometimes call the shots instead.
Jenna Gallegos with an Arabidopsis thaliana plant. Sometimes called “thale cress,” Arabidopsis is a popular plant for laboratory studies.
Professor Alan Rose has been working for over two decades to unravel a mechanism called “intron-mediated enhancement.” I’m a graduate student in Rose’s lab, and we made an exceptional discovery in an unexceptional plant called Arabidopsis thaliana, or thale cress.
Represents Most Successful Group of Flowering Plants
By Pat Bailey
Today (April 12), UC Davis researchers announced in Nature Communications that they have unlocked a treasure-trove of genetic information about lettuce and related plants, releasing the first comprehensive genome assembly for lettuce and the huge Compositae plant family.
Lettuce belongs to a large Compositae family of plants. A lettuce flower shows the similarity to plants such as ragweed and sunflowers. (Gregory Urquiaga)
Garden lettuce, or Lactuca sativa, is the plant species that includes a salad bar’s worth of lettuce types, ranging from iceberg to romaine. With an annual on-farm value of more than $2.4 billion, it is the most valuable fresh vegetable and one of the 10 most valuable crops, overall, in the United States.
Applying mathematics to detect chemical weapons, hidden explosives or other threats is the goal of an ongoing project at the UC Davis Department of Mathematics, supported by grants from the National Science Foundation.
Blind deconvolution is a mathematical method to clarify a blurred image without knowledge of the original image, or how it was blurred. Top, original image; bottom, blurred image after blind deconvolution (Original image by Steve Byland).
Threat detection involves math at a range of levels, said Professor Thomas Strohmer, who leads the project. It can include quickly processing large amounts of data, coordinating multiple sensors, or extracting clarity from background noise.
Full post: NSF Grant Funds Math For National Security
(455 words, 1 image, estimated 1:49 mins reading time)
New Instrument Will Enable Discovery in Biology
By Cassaundra Baber
The addition of a ground-breaking microscope to the College of Biological Sciences’ arsenal of research tools will transform the way UC Davis life scientists conduct research, researchers say. The lattice light-sheet microscope — one of approximately 25 of its type in the world — has the potential to revolutionize what is known about the living cell.
“Think about Galileo and his telescope,” said Michael Paddy, scientific coordinator for the Light Microscopy Imaging Facility in the Department of Molecular and Cellular Biology. “His invention changed astronomy and our understanding of our place in the world.”
By Katherine Ingram
Spring is in the air in California’s Central Valley. Birds are bathing in puddles that dot the landscape, and bats are swooping in and out of streetlights at dusk. Both groups of wildlife are feasting on bugs emerging after this winter’s epic rains.
Bats are voracious predators of insects. Photo of Pallid bat by merlintuttle.org
The sight is a pleasant reminder of the abundance of wildlife that lives alongside us, performing tasks that inadvertently aid humans, such as natural pest control, pollination, and seed dispersal.
Full post: Bring On The Bats (And Birds And Raptors)
(535 words, 1 image, estimated 2:08 mins reading time)
Possible new route to regenerating function lost in diabetes
In people with type I diabetes, insulin-producing beta cells in the pancreas die and are not replaced. Without these cells, the body loses the ability to control blood glucose. Researchers at the University of California, Davis have now discovered a possible new route to regenerating beta cells, giving insight into the basic mechanisms behind healthy metabolism and diabetes. Eventually, such research could lead to better treatment or cures for diabetes.
People play more often when they receive reminders, study finds
By Karen Nikos-Rose
Video games and “brain training” applications are increasingly touted as an effective treatment for depression. A new UC Davis study carries it a step further, though, finding that when the video game users were messaged reminders, they played the game more often and in some cases increased the time spent playing.
“Through the use of carefully designed persuasive message prompts … mental health video games can be perceived and used as a more viable and less attrition-ridden treatment option,” according to the study.
By Karen Nikos-Rose
Ever wondered what your exes have in common, and how they differ from people you never dated?
The people one dates share many similarities – both physically and personality-wise — a new UC Davis study has found.
For observable qualities like attractiveness, similarity emerges because attractive people seduce other attractive people. But, researchers said, for qualities that vary greatly depending on where you live (like education or religion) similarity emerges because educated or religious people tend to meet each other, not because educated or religious people actively select each other.
Hobby 3-D Printing Leads to New Insights into Moving Sofa Problem
By Becky Oskin
Most of us have struggled with the mathematical puzzle known as the “moving sofa problem.” It poses a deceptively simple question: What is the largest sofa that can pivot around an L-shaped hallway corner?
A mover will tell you to just stand the sofa on end. But imagine the sofa is impossible to lift, squish or tilt. Although it still seems easy to solve, the moving sofa problem has stymied math sleuths for more than 50 years. That’s because the challenge for mathematicians is both finding the largest sofa and proving it to be the largest. Without a proof, it’s always possible someone will come along with a better solution.