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  • 1
    ISSN: 1435-5566
    Keywords: Key words: Authoring tools – Cognitive engineering – Emergency management – Experiential learning – Interorganisational learning – Training
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Technology
    Notes: Abstract: Discussion-based exercises are a prevalent form of training in emergency management, aimed at improving coordinative decision making between the various agencies involved in disaster response. In each exercise, small multi-agency groups of decision makers discuss potential courses of action within a fictitious disaster scenario presented as a textual narrative supported by visual materials. We present a cognitive engineering analysis of the problem of designing disaster scenarios for effective discussion-based exercises. The analysis was carried out through the development of a pilot authoring environment to establish and address the requirements of a training organisation in the UK. The pilot authoring environment embodies a simple theoretical model of the exercise process in which facts of a disaster scenario afford discussion of pertinent issues which are elicited by considerations fed to trainees. This representational scheme allows the authoring environment to complement and extend authors’ mental models of exercises, and thereby enhance five aspects of authoring: rationalisation; continuity of rationale; evolution; adaptability; and the integration of evaluation feedback.
    Type of Medium: Electronic Resource
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  • 2
    Publication Date: 2019-07-13
    Description: The orbit of the Polar spacecraft has been ideally suited for studying the turbulent region of the cusp that is located near or just outside the magnetopause current sheet at 7-9 R(sub E). The wave data obtained in this region show that electromagnetic turbulence is dominant in the frequency range 1-10 Hz. The waves responsible for this turbulence usually propagate perpendicular to the local magnetic field and have an index of refraction that generally falls between the estimated cold plasma theoretical values of the electromagnetic lower hybrid and whistler modes and may be composed of both modes in concert with kinetic Alfven waves and/or fast magnetosonic waves. Fourier spectra of the higher frequency wave data also show the electromagnetic turbulence at frequencies up to and near the electron cyclotron frequency. This higher frequency electromagnetic turbulence is most likely associated with whistler mode waves. The lower hybrid drift and current gradient instabilities are suggested as possible mechanisms for producing the turbulence. The plasma and field environment of this turbulent region is examined and found to be extremely complex. Some of the wave activity is associated with processes occurring locally, such as changes in the DC magnetic field, while others are associated with solar wind and interplanetary magnetic field changes.
    Keywords: Geophysics
    Type: Nonlinear Processes in Geophysics; 6; 195-204
    Format: text
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  • 3
    Publication Date: 2019-07-13
    Description: The orbit of the Polar spacecraft has been ideally suited for studying the turbulent region of the cusp that is located near or just outside the magnetopause current sheet at 7-9 R(sub E). The wave data obtained in this region show that electromagnetic turbulence is dominant in the frequency range 1-10 Hz. The waves responsible for this turbulence usually propagate perpendicular to the local magnetic field and have an index of refraction that generally falls between the estimated cold plasma theoretical values of the electromagnetic lower hybrid and whistler modes and may be composed of both modes in concert with kinetic Alfven waves and/or fast magnetosonic waves. Fourier spectra of the higher frequency wave data also show the electromagnetic turbulence at frequencies up to and near the electron cyclotron frequency. This higher frequency electromagnetic turbulence is most likely associated with whistler mode waves. The lower hybrid drift and current gradient instabilities are suggested as possible mechanisms for producing the turbulence. The plasma and field environment of this turbulent region is examined and found to be extremely complex. Some of the wave activity is associated with processes occurring locally, such as changes in the DC magnetic field, while others are associated with solar wind and interplanetary magnetic field changes.
    Keywords: Geophysics
    Type: Nonlinear Processes in Geophysics; 6; 195-204
    Format: text
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  • 4
    Publication Date: 1999-01-01
    Print ISSN: 1023-5809
    Electronic ISSN: 1607-7946
    Topics: Geosciences , Physics
    Published by Copernicus on behalf of European Geosciences Union (EGU).
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