Yunmei Liu

Ph.D. Candidate at University of Florida

PROJECTS



1. Research on Automation Rate and Situation Awareness Responses

During the operation of automated systems, if a user cannot accurately understand the structure and function of automation of the system, it is likely that distrust or over-trust in the automation will occur. To address this research gap, my dissertation research developed a continuous “automation rate (AR)” function to quantify levels of automation in complex systems. In addition, I proposed a new relationship between the AR function and operator situation awareness responses, based on existing empirical research findings.
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2. Roadway Signage for Novel Grade-separated Interchanges

This is an NCDOT-funded project that used a driving simulator to compare the driving performance and mental state of young and middle-aged drivers while navigating standard intersections and novel GSI (contraflow and quadrant) conditions. The experiment also manipulated driver exposure to different configurations of lane assignment and decision point signs.


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3. EMG-based Assistive Human-Machine Interface Design

This is an NSF-funded project to develop models of powered-prosthetic user cognitive workload when applying different modes of electromyography (EMG)-based device control. Models are to be used for predicting workload associated with use of EMG-based control interfaces in other applications.



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4. Real-time Perceptually-enabled Task Guidance in the Extremes

This a DARPA-funded project on the use of augmented reality for providing knowledge task guidance in extreme situations. The research challenge is to create a data-to-knowledge "pipeline" from wearable devices to an intelligent agency that can determine what information or guidance to provide to human operators in real-time.


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5. Other Projects

In addition to the above research studies, I have also been involved in other projects on systems safety analysis research, unmanned aerial vehicle interface design, consistency in the design of interchanges in high-density traffic corridors and non-safety-related in-vehicle and on-road message displays.



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