What is the optimal location of an instrument and how does a new instrument affect the operator’s task performance and workload? With a tool-supported cognitive modeling of virtual operators workload and performance of trained operators can be predicted. Such a simulation can consider hundreds of procedures of how a machine can be controlled.

Development and evaluation of dynamic and complex systems require techniques and tools to evaluate the risks of Human and Systems Error, especially for safety critical systems. Established techniques like the cognitive workload analysis that can be used to assess the individual perceived operator workload for sets of tasks these are not widely used in industrial development. That is, because  cognitive analysis of dynamic systems depends on complex  architectures and simulations to evaluate workload over  time, and is still driven by proprietary notations for  cognitive models that require in-depth cognitive modeling  skills and is currently only accessible to experts.

The Human  Efficiency Evaluator (HEE) can ease the analysis of the impact of new instruments and new display designs with respect to human operator workload and task execution times. The tool is designed to make these cognitive analysis techniques available to non-experts, such as system analysts and engineers.

The video demonstrates the cognitive modeling and analysis process supported by the HEE referring to an aeronautics scenario. The cognitive analysis compares the task performance and workload of three generations of cockpit instrument designs
to support pilots’ with the slats/flaps settings during an  aircraft approach with the current support in modern  aircrafts and was performed by using the HEE.



  • [PDF] [DOI] S. Feuerstack, A. Lüdtke, and J. Osterloh, “A Tool for Easing the Cognitive Analysis of Design Prototypes of Aircraft Cockpit Instruments,” in Proceedings 33rd annual conference of the European Association of Cognitive Ergonomics, 2015, p. 22:1–22:8.
    author = {Sebastian Feuerstack and Andreas L{\"u}dtke and Jan--Patrick Osterloh},
    title = {A Tool for Easing the Cognitive Analysis of Design Prototypes of
    Aircraft Cockpit Instruments},
    booktitle = {Proceedings 33rd annual conference of the European Association of
    Cognitive Ergonomics},
    year = {2015},
    pages = {22:1--22:8},
    month = {7},
    publisher = {ACM},
    acmid = {2788434},
    articleno = {22},
    comment = {HF},
    doi = {http://dx.doi.org/10.1145/2788412.2788434},
    file = {Feuerstack2015b.pdf:Feuerstack2015b.pdf:PDF},
    isbn = {978-1-4503-3612-3},
    keywords = {Cognitive Workload Analysis, Human-Machine-Interaction, Operator Workload
    Evaluation, Task Execution Time Prediction},
    location = {Warsaw, Poland},
    numpages = {8},
    owner = {sfeuer},
    timestamp = {2015.07.29}


  • [PDF] S. Feuerstack, The Human Efficiency Evaluator, 2015.
    author = {Sebastian Feuerstack},
    title = {The Human Efficiency Evaluator},
    howpublished = {Poster at 7th edition of the ARTEMIS Co-summit dedicated to Smart
    industry: impact of software innovation},
    month = {March},
    year = {2015},
    file = {Feuerstack2015d.pdf:Feuerstack2015d.pdf:PDF},
    owner = {sfeuer},
    timestamp = {2016.01.11}