DLR-Logo -> http://www.dlr.de
DLR Portal Home | Imprint | Privacy Policy | Contact | Deutsch
Fontsize: [-] Text [+]

Model Based Analysis of Subjective Mental Workload during Multiple Remote Tower Human-in-the-Loop Simulations

Fürstenau, Norbert and Papenfuß, Anne (2022) Model Based Analysis of Subjective Mental Workload during Multiple Remote Tower Human-in-the-Loop Simulations. In: Virtual and Remote Tower (2nd edition) - Research, Design, Development, Validation and Implementation Research Topics in Aerospace. Springer Publishers. pp. 293-342. doi: 10.1007/978-3-030-93650-1_13. ISBN 978-3-030-93649-5. ISSN 2194-8240.

Full text not available from this repository.

Official URL: https://link.springer.com/book/10.1007/978-3-030-93650-1


We report on the analysis of subjective mental workload (WL) and objective task load (TL) measurements of a Multiple Remote Tower Operation (MRTO) simulation experiment with 12 air traffic control officers (ATCos). The experiment was performed as part of a project for the development of a remote tower center (RTC) for the centralized control of several airports (APs) from afar (Fürstenau, Virtual and remote control tower. Springer, Switzerland, 2016). Specifically, we were interested in the question if being responsible for two or more traffic systems at the same time, causes workload independently from actual traffic load. Subjective WL was measured by means of the one-dimensional quasi real time Instantaneous Self Assessment method (five level ISA scale) whereas objective TL data were obtained online by monitoring ATCo’s communication with pilots (radio calls frequency RC and duration RD), both dependent on the environmental traffic load n. In addition to variance analysis (ANOVA) for quantifying linear correlations (WL/TL~n) a new cognitive resource limitation model for nonlinear (logistic) regression-based parameter estimates was applied to the data (Fürstenau et al., Theor Issues Ergon Sci, 2020). ANOVA results supported initially stated hypotheses on significant increase of subjective and objective WL/TL measures with increasing traffic flow n, as well as a WL increase under transition from one controller per airport (baseline) to two-airport control by a single ATCo (Lange et al., Analyse des Zusammenhangs zwischen dem Workload von Towerlotsen und objektiven Arbeitsparametern, 2011). Furthermore, a hypothesized mediator effect of communication TL was determined, mediating the dependency of ISA-WL on traffic load n. The extension of the of the (linear) ANOVA by the (nonlinear) logistic model-based analysis of ISA(n) and RC(n) data allowed for the quantification of theoretically founded WL/TL sensitivity (ν/ρ) and bias parameters, the latter characterizing the difference between work conditions. The validity of the regression-based parameter estimates was supported by the theoretical prediction of model parameters based on prior information (e.g. scale limits). Estimates of the nonlinear model parameters quantified the dissociation between the subjective WL and objective communication load measures. Derived from the assumption of cognitive resource limitation the logistic model provides a theoretical foundation for the discussion of the initially stated hypotheses regarding WL/TL characteristics. Specifically, a stimulus (RC)—response (ISA) power law analysis according to (Fürstenau and Radüntz, Power law model for subjective mental workload and validation through air-traffic control human-in-the-loop simulation, 2021) allowed via the Stevens exponent γ(=ρ/ν) to formalize and quantify the assumed mediator role of the objective communication TL between traffic flow and the subjective ISA-WL response.

Item URL in elib:https://elib.dlr.de/187443/
Document Type:Book Section
Title:Model Based Analysis of Subjective Mental Workload during Multiple Remote Tower Human-in-the-Loop Simulations
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Papenfuß, AnneUNSPECIFIEDhttps://orcid.org/0000-0002-0686-7006UNSPECIFIED
Date:July 2022
Journal or Publication Title:Virtual and Remote Tower (2nd edition) - Research, Design, Development, Validation and Implementation
Refereed publication:Yes
Open Access:No
Gold Open Access:No
In ISI Web of Science:No
Page Range:pp. 293-342
EditorsEmailEditor's ORCID iDORCID Put Code
Publisher:Springer Publishers
Series Name:Research Topics in Aerospace
Keywords:Multiple Remote Tower Mental workload Task load Air traffic control simulation Work conditions Cognitive resource limitation Instantaneous self assessment Psychophysics Logistic model Stevens law Parameter estimation Nonlinear regression
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:Air Transportation and Impact
DLR - Research area:Aeronautics
DLR - Program:L AI - Air Transportation and Impact
DLR - Research theme (Project):L - Human Factors
Location: Braunschweig
Institutes and Institutions:Institute of Flight Guidance > Systemergonomy
Deposited By: Höver, Julia
Deposited On:16 Aug 2022 09:35
Last Modified:16 Aug 2022 09:35

Repository Staff Only: item control page

Help & Contact
electronic library is running on EPrints 3.3.12
Website and database design: Copyright © German Aerospace Center (DLR). All rights reserved.