Pilot workload and fatigue: A critical survey of concepts and assessment techniques

The principal unresolved issues in conceptualizing and measuring pilot workload and fatigue are discussed. These issues are seen as limiting the development of more useful working concepts and techniques and their application to systems engineering and management activities. A conceptual analysis of pilot workload and fatigue, an overview and critique of approaches to the assessment of these phenomena, and a discussion of current trends in the management of unwanted workload and fatigue effects are presented. Refinements and innovations in assessment methods are recommended for enhancing the practical significance of workload and fatigue studies

Study of flight management requirements during SST low visibility approach and landing operations Final summary report

Flight management operational problems and task requirements for low visibility approach and landing of supersonic transport

Study of flight management requirements during SST low visibility approach and landing operations. Volume 2 - Delineation of potential problems in supporting the performance of flight management tasks

Potential flight management problems during low visibility landing of supersonic transport

Simulator evaluation of display concepts for pilot monitoring and control of space shuttle approach and landing. Phase 2: Manual flight control

A study of the display requirements for final approach management of the space shuttle orbiter vehicle is presented. An experimental display concept, providing a more direct, pictorial representation of the vehicle's movement relative to the selected approach path and aiming points, was developed and assessed as an aid to manual flight path control. Both head-up, windshield projections and head-down, panel mounted presentations of the experimental display were evaluated in a series of simulated orbiter approach sequence. Data obtained indicate that the experimental display would enable orbiter pilots to exercise greater flexibility in implementing alternative final approach control strategies. Touchdown position and airspeed dispersion criteria were satisfied on 91 percent of the approach sequences, representing various profile and wind effect conditions. Flight path control and airspeed management satisfied operationally-relevant criteria for the two-segment, power-off orbiter approach and were consistently more accurate and less variable when the full set of experimental display elements was available to the pilot. Approach control tended to be more precise when the head-up display was used; however, the data also indicate that the head-down display would provide adequate support for the manual control task

Improved display support for flight management during low visibility approach and landing. A simulator evaluation of an ILS-independent runway perspective display Final report

Low visibility approach and landing simulation for jet transport

ENTER: Entrepreneurial Narrative Theory Ethnomethodology and Reflexivity: An Issue about The Republic of Tea

ENTER focuses on specific entrepreneurial narratives. The label entrepreneurial narrative is defined loosely, to encompass a variety of texts that are generated by entrepreneurs, or by others, about entrepreneurs. So, entrepreneurial narrative should be considered broadly. This first issue of ENTER focuses on the book The Republic of Tea (Zeigler, Rosenzweig & Zeigler, 1992). The book is a series faxes among the founders/authors about the development of a business called The Republic of Tea. The book, therefore, has a temporal aspect to it (the faxes occur over time) but, the story of the Republic of Tea is not told by one specific author, and the story does not unfold in the typical story form.https://tigerprints.clemson.edu/cudp_entrepreneur/1005/thumbnail.jp

ACORN: Entrepreneurial Narrative and History

In order to learn how the entrepreneurial imagination works, it is important to study the stories that entrepreneurs tell about how they turned their ideas into businesses. In ACORN, the Spiro Institute for Entrepreneurial Leadership presents interviews with entrepreneurs as they tell their stories about the creation of their businesses. Not only do these interviews offer insights into the activities specific to venture creation, but they also demonstrate some of the thought processes involved. This volume focuses on entrepreneurs who have started businesses based around new technologies at Clemson University.https://tigerprints.clemson.edu/cudp_entrepreneur/1004/thumbnail.jp

Anomalous dephasing of bosonic excitons interacting with phonons in the vicinity of the Bose-Einstein condensation

The dephasing and relaxation kinetics of bosonic excitons interacting with a thermal bath of acoustic phonons is studied after coherent pulse excitation. The kinetics of the induced excitonic polarization is calculated within Markovian equations both for subcritical and supercritical excitation with respect to a Bose-Einstein condensation (BEC). For excited densities n below the critical density n_c, an exponential polarization decay is obtained, which is characterized by a dephasing rate G=1/T_2. This dephasing rate due to phonon scattering shows a pronounced exciton-density dependence in the vicinity of the phase transition. It is well described by the power law G (n-n_c)^2 that can be understood by linearization of the equations around the equilibrium solution. Above the critical density we get a non-exponential relaxation to the final condensate value p^0 with |p(t)|-|p^0| ~1/t that holds for all densities. Furthermore we include the full self-consistent Hartree-Fock-Bogoliubov (HFB) terms due to the exciton-exciton interaction and the kinetics of the anomalous functions F_k= . The collision terms are analyzed and an approximation is used which is consistent with the existence of BEC. The inclusion of the coherent x-x interaction does not change the dephasing laws. The anomalous function F_k exhibits a clear threshold behaviour at the critical density.Comment: European Physical Journal B (in print

A simulator study of flight management task performance during low visibility approach and landing using baseline category 2 flight instrumentation

Simulator study of flight management task performance during low visibility approach and landing using baseline category 2 flight instrumentatio