My specialty is human-robot interaction. The central themes of my work are what I prefer to term constrained user interfaces and operator assistance. I am interested in how to enable timely and appropriate interaction when interfaces are restricted through design, tasks, the environment, time pressures, and/or user abilities. I utilize training and experience in human factors and ergonomics, robotics, intelligent transportation, rehabilitation, human-computer interaction, universal design, wearable computing, and research methods. My two core areas of interest are: Human-Robot Intent Fusion: A system level view is important for ensuring task success through a mixture of human adaptability and robot precision and perseverance. Appropriate Robot Behavior: End users expect appropriate robot actions, interventions, and requests for human assistance. I have a strong interest and extensive experience with design and execution of evaluation experiments for complex human-in-the-loop systems. Examples of past work includes human-machine interaction and interfaces for collision warning systems, drowsy driving, zero- visibility snowplow operations, advanced in-vehicle systems, head-up displays, real-time captioning, rehabilitation robotics, military robotics, semi and fully autonomous mobile robots, and software agents.