These copepods are Pseudodiaptomus forbesi collected in the freshwater reach of the upper San Francisco Estuary. Image analysis on subsamples like this was used to determine growth rate, which will be used to assess the habitat's ability to supports the endangered delta smelt. Photo provided by Dr. Wim Kimmerer.
A Neural Network
This diagram, provided by Guarav R. Suri, assistant professor, depicts a neural network. Neural networks are software algorithms which consist of nodes that are conneccted with different weights - just as the brain consists of neuronal assemblies that are connected with synaptic strengths. The neural network shown here is being used to stimulate value-based decision making.
Trapped Bacterial Cells
Joint research work with Zhigang Chen (Physics & Astronomy) and Joseph Chen (Biology). Tug-of-war optical tweezers trap bacterial cells and exert lateral forces in opposite directions, stretching and separating them. The diagram comprises a vector field of the intensity gradient of the trapping beam (white arrows), a volumetric rendering of the beam from experimental data near the focus of an objective lens (green shading), and a schemativ representation of a pair of attached bacterial cells being trapped and pulled apart.
Encoding of an A-orbit in the space of 3D lattices
Encoding of an A-orbit in the space of 3D lattices providing a dynamical re-inerpretation of Littlewood's Conjecture, as shown by Samantha Lui (2014 SF State MA Thesis). Advisor, Professor Yitwah Cheung.
Irrawaddy dolphins (Orcaella brevirostris) traveling in Trat Province, Thailand, in the eastern Gulf of Thailand, seen during a long-term abundance and distribution survey led by Dr. Ellen Hines (Geography, Romberg Tiburon Center). Photo by Justine Jackson-Ricketts.