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Credit: Raj Kumar Manna
PITTSBURGH (March 16, 2021) . During the swarming of birds or fish, each entity coordinates its location relative to the others, so that the swarm moves as one larger, coherent unit. Fireflies on the other hand coordinate their temporal behavior: within a group, they eventually all flash on and off at the same time and thus act as synchronized oscillators.
Few entities, however, coordinate both their spatial movements and inherent time clocks; the limited examples are termed swarmalators 1, which simultaneously swarm in space and oscillate in time. Japanese tree frogs are exemplar swarmalators: each frog changes both its location and rate of croaking relative to all the other frogs in a group.
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2021 Rising Stars: Cassandra Gallaschun
Research Scientist/Engineer, Braskem
As research scientist/engineer for Pittsburgh-based materials firm Braskem, Cassandra Gallaschun is required to be on-site in the lab about half of the time. But with the coronavirus pandemic, her access to the lab has been limited due to safety initiatives, which has forced her to look for creative solutions to work and achieve tasks, such as using historical data. Being a member of a global team, I was somewhat accustomed to video meetings; however, not having the opportunity to collaborate and socialize in person has been hard, Gallaschun added. I have been recently trying to make sure I devote some time each week to staying connected to my colleagues. During the pandemic, I have had to become more conscious of prioritizing work relationships.
Thursday, February 4, 2021
Share Research led by Paul Ohodnicki, associate professor of mechanical engineering and materials science at the University of Pittsburgh Swanson School of Engineering, recently received $1 million in funding to utilize Pitt-developed optical fiber sensor technology as the “nerves” of critical infrastructure, such as natural gas pipelines, to mimic the principle of a nervous system. Ohodnicki also teaches in the electrical and computer engineering department. The research will embed optical fiber sensors internal to the pipeline to create an “innervated” pipeline system that enables monitoring the integrity of the pipes through acoustic and vibrational signatures of defects. By combining the embedded sensors with artificial intelligence and machine learning and integrating into an overarching digital twin of the pipeline system, an “intelligent” pipeline can be realized that allows for targeted in-situ repairs of defects. I
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IMAGE: Animation from simulation demonstrating spatio-temporal control of rotors via a cascade reaction. GOx-coated rotor (magenta) lies on the left side of the chamber, while CAT-coated rotor (green) lies on the. view more
Credit: A. Laskar
PITTSBURGH (December 18, 2020) . The gear is one of the oldest mechanical tools in human history1 and led to machines ranging from early irrigation systems and clocks, to modern engines and robotics. For the first time, researchers at the University of Pittsburgh Swanson School of Engineering have utilized a catalytic reaction that causes a two-dimensional, chemically-coated sheet to spontaneously morph into a three-dimensional gear that performs sustained work.