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Portfolio

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    Portfolio Portfolio Presentation Transcript

    • Snapshot and Selected Works Tao Zhang [email_address]
    • Current Position
      • 09/01/2009- present
      • Research Associate, Electrical Engineering and Computer Science Department, Vanderbilt University
      • System of Human-Robot Interfaces for Emergency Response Teams
        • Single operator controlling multiple heterogeneous robots.
        • Automation and situation awareness support.
        • Information visualization and abstraction.
    • Current Position
      • Human Performance Modeling for Human-Robot Peer-Based Teams
        • How people work differently with human and robot teammate in a triage (first aid medical assessment) scenario
          • Workload: Heart rate variability, subjective response, computer modeling
          • Trust, communication efficiency
    • Previous Positions
      • 08/2006-08/2009
      • Research Assistant, Cognitive Ergonomics Laboratory, North Carolina State University
        • Situation Awareness and Mental Models [Dissertation]
        • Human-Robot Interaction in Healthcare
        • Virtual Reality-based Locomotion
    • Previous Positions
      • 09/2004-07/2006
      • Research Assistant, Institute of Human Factors and Ergonomics, Tsinghua University
        • Product attributes and perceived usability for cellphones [Thesis]
        • Website usability evaluation and prototype design with eLong.com
        • Cross culture user study with SAP China
        • Digital TV user interface evaluation and prototype design with SAMSUNG China
    • Project – Human-Robot Interaction in Healthcare
      • Critical issues for nursing in healthcare and assisted living facilities:
        • Nursing staff shortages in U.S. since 1998
        • Medication errors and patient safety issues result from nurse fatigue or intense work schedule
      • Robots may be useful for reducing nurse staffing and workload issues
        • Can be used to complement nurses in handling basic patient-related tasks.
        • Reduce potentially harmful medication errors.
        • Provide continuous care for every patient.
      • For future service robots for medicine delivery:
        • Direct interaction with patients will be part of the job.
        • Task performance and patient emotional responses will be important measures of overall healthcare service.
    • Project – Human-Robot Interaction in Healthcare Patient
      • Individual
      • differences
      • Determinants of
      • anthropomor-
      • phization
      Service robot
      • Physical appearance
      • Interface features
      • - Facial expression
      • - Voice capability
      • - User interaction
      Interaction Healthcare Service Patient emotional response Measurement Perceived anthropomorphism
    • Project – Human-Robot Interaction in Healthcare
      • Robot features
        • Face
          • Abstract
          • Human-like
        • Voice
          • Synthesized voice
          • Digitized human voice
        • Interactivity
          • Visual message
          • Touch screen interaction
    • Project – Human-Robot Interaction in Healthcare
      • Experiment conducted at two senior communities in NC with elderly people
        • Simulated medicine delivery task
      • Measures
        • Heart rate (HR) and galvanic skin response (GSR)
          • Converted to emotional measures by fuzzy logic models
        • Subjective emotional responses
          • Arousal & Valence
        • Perceived anthropomorphism (PA) – Perception of robot humanness
          • Physical appearance, expressiveness, task handling, subjective experience.
    • Project – Human-Robot Interaction in Healthcare
      • Results
        • Adding anthropomorphic features (i.e., face, voice and interactivity) to service robots leads to perceptions of humanness and positive emotional experiences.
        • Within each feature type, perception of humanness and positive emotional responses increase with increasing feature complexity or realism (compared to human).
        • Differences in physiological response were found at certain events during interaction.
        • Fuzzy inference models have utility in emotion state identification.
    • Project – eLong.com Usability Test and Redesign
      • Followed user-centered design process
    • Project – eLong.com Usability Test and Redesign
      • Quantitative method (cluster analysis) of generating typical users
    • Project – eLong.com Usability Test and Redesign
      • Prototype design (worked with eLong UX team)
    • Project – eLong.com Usability Test and Redesign
      • Usability test with prototypes
        • 20 eLong users
        • User preferences of
          • Homepage layout
          • Choosing city on hotel search page, hotel search result display
          • Flight search result page
          • Hotel wiki page
        • Potential usability and user performance caveats
        • Future design guidelines
    • Project – SAMSUNG DTV UI Improvement
      • Feature comparison of DTVs in Chinese market
        • Functions:
          • Connections, channel set up, screen & picture, timer, audio/video control, energy saving options
        • Menu navigation and remote design
          • Task time estimation by:
          • Hick’s law
          • T = a + b log 2 (n+1)
          • Keyboard Level Model (KLM)
    • Project – SAMSUNG DTV UI Improvement
      • Chinese users’ mental model of Digital TV
        • No clear ideas in 2004
        • Could be transferred from experiences of PC, game console, web, handheld devices, etc.
      • Proposed DTV UI style guidelines
        • Maintain the TV context
        • Use of colors and fonts from human factors literature
        • Localization & Globalization
    • Project – SAMSUNG DTV UI Improvement
      • Design styles (drawn by students of Art School, Tsinghua University)
    • Project – SAMSUNG DTV UI Improvement
    • Project – SAMSUNG DTV UI Improvement
      • Menu structure design
        • My favorites
        • TV
    • Project – SAMSUNG DTV UI Improvement
      • Menu structure design
        • Media Center
        • Interactive Services
    • Project – SAMSUNG DTV UI Improvement
        • Usability test with webpage-based prototype
        • Qualitative interview - perception of DTV product
          • No idea of DTV
          • “ Media center”, not “media player”
          • Online service
          • Searching rather than browsing
        • Prototype review
        • Cognitive walkthrough