September 23, 2016
Classification and Recognition from High Dimensional Network Dynamics
We develop methods at the interface of dynamical system theory and data analysis to classify the dynamics that networks produce. In neuronal networks these are collections of experimentally observed time-series recorded from multiple neurons as they respond to stimuli. We also develop optimal strategies for network sampling to obtain efficient classification. Examples of classifications from…
July 21, 2016
Ultrathin Flexible Quantum Dot Devices on Nanocellulose Paper
Made from the same cellulose materials as regular paper, but with new engineered methods to reduce the size of the cellulose fibers, nanocellulose papers can achieve highly transparency (>90%) and smoothness (<10 nm). Furthermore, nanocellulose paper is biodegradable and environmentally friendly. At the same time, solution-processed quantum dots (QDs) have high optical qualities with high…
July 20, 2016
Radio Frequency Full-Duplex Communication
The current “holy grail” of radio integration is the implementation of self-interference cancellation techniques which would allow simultaneous operation of a transmitter and receiver, associated with the same transceiver, while sharing an identical carrier frequency. This research seeks to explore and implement integrated radio frequency (RF) cancellation and filtering techniques which would allow same-channel simultaneously…
All-CMOS Neural Interfaces
This work seeks to address the challenges associated with implementing neural interface electronics using standard Complementary metal-oxide-semiconductor (CMOS) technologies, to enable single-chip, bidirectional brain computer interfaces (BBCI). Specific barriers currently being addressed are the seeming incompatibility between low-voltage CMOS devices and the required high voltages resulting from biphasic neural stimulation. These implantable devices have potential…
Human Tracking and Re-Identification
When a single camera is used to monitor and count a scene full of people, it’s common for a person who’s already been tracked by the system to re-enter the camera’s field of view multiple times. This throws off the counting and results in incorrect statistics of distinct people. Based on our tracking trajectories and…
EcoCar3 (Electrical Engineering Faculty Adviser)
Sponsored by General Motors and Argonne National Laboratory, EcoCar3 is a national competition among engineering schools to redesign a Chevrolet Camaro into a high-performance hybrid electric vehicle.
Provably-Correct Interventions for Human-Cyber-Physical Systems
With machines and humans increasingly working together to complete various tasks, from robot-assisted surgery to flying airplanes, it is critical that people can easily control dynamic robotic systems. Because humans may misunderstand the robotic system’s intentions, or behave unexpectedly, such systems can easily become unsafe. By developing better closed-loop systems, data flows both ways between…
Tonality in Cochlear Implants
Current cochlear implants lack the ability to transmit pitch in sound to patients Ð a crucial lack not only for fully hearing music, but especially for speakers of tonal languages such as Chinese. Our research has already shown and patented an approach to providing tone for implant patients, but success has only been demonstrated in…
Nonstationary Acoustic Models
Passive sonar signals — and, in particular, those that are modulated — open a new dimension of statistical signal processing called complementary statistics. We are exploring the efficiency of complementary statistics by experimenting on common signals such as environmental sounds and speech. Our research has shown promising results in detecting speech events in environments as…
July 18, 2016
Learning to Ground Language into Algebra Equations
Web data and newspapers usually report statistical assessments or mathematical analyses over numerical quantities. Designing algorithms to automatically understand these textual descriptions precisely is beneficial for financial companies, government or search engines. As a first step toward this goal, we focus on solving algebra word problems by mapping natural language texts into algebra equations.
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