13,013 research outputs found
How Do Multinational Corporations Creatively Address D&I Initiatives Through Corporate Social Responsibility?
Question: What are the indicators of a world class Diversity &Inclusion (D&I) program? How do these correlate to business results?
Revised Question: How do multinational corporations (MNCs) creatively address D&I initiatives through cultural competence and Corporate Social Responsibility (CSR)
Monomial, Gorenstein and Bass Orders
In this article we study a class of orders called {\it monomial orders} in a
central simple algebra over a non-Archimedean local field. Monomial orders are
easily represented and they may be also viewed as a direct generalization of
Eichler orders in quaternion algebras. A criterion for monomial orders to be
Gorenstein or to be Bass is given. It is shown that a monomial order is Bass if
and only if it is either a hereditary or an Eichler order of period two.Comment: 13 pages; fix typos in the proof of Theorem 3.
Supersingular abelian surfaces and Eichler class number formula
Let be a totally real field with ring of integers , and be a
totally definite quaternion algebra over . A well-known formula established
by Eichler and then extended by K\"orner computes the class number of any
-order in . In this paper we generalize the Eichler class number
formula so that it works for arbitrary -orders in . The
motivation is to count the isomorphism classes of supersingular abelian
surfaces in a simple isogeny class over a prime finite field . We
give explicit formulas for the number of these isomorphism classes for all
primes .Comment: 29 pages, 3 numerical tables, shortened revised version with same
results, Sections 7-9 of v2 are remove
Pilots’ visual scan pattern and situation awareness in flight operations
Introduction: Situation awareness (SA) is considered an essential prerequisite for safe flying. If the impact of visual scanning patterns on a pilot’s situation awareness could be identified in flight operations, then eye-tracking tools could be integrated with flight simulators to improve training efficiency. Method: Participating in this research were 18 qualified, mission-ready fighter pilots. The equipment included high-fidelity and fixed-base type flight simulators and mobile head-mounted eye-tracking devices to record a subject’s eye movements and SA while performing air-to-surface tasks. Results: There were significant differences in pilots’ percentage of fixation in three operating phases: preparation (M = 46.09, SD = 14.79), aiming (M = 24.24, SD = 11.03), and release and break-away (M = 33.98, SD = 14.46). Also, there were significant differences in pilots’ pupil sizes, which were largest in the aiming phase (M = 27,621, SD = 6390.8), followed by release and break-away (M = 27,173, SD = 5830.46), then preparation (M = 25,710, SD = 6078.79), which was the smallest. Furthermore, pilots with better SA performance showed lower perceived workload (M = 30.60, SD = 17.86), and pilots with poor SA performance showed higher perceived workload (M = 60.77, SD = 12.72). Pilots’ percentage of fixation and average fixation duration among five different areas of interest showed significant differences as well. Discussion: Eye-tracking devices can aid in capturing pilots’ visual scan patterns and SA performance, unlike traditional flight simulators. Therefore, integrating eye-tracking devices into the simulator may be a useful method for promoting SA training in flight operations, and can provide in-depth understanding of the mechanism of visual scan patterns and information processing to improve training effectiveness in aviation
Pilots’ visual scan pattern and attention distribution during the pursuit of a dynamic target
Introduction: The current research is investigating pilots’ visual
scan patterns in order to assess attention distribution during
air-to-air manoeuvers. Method: A total of thirty qualified
mission-ready fighter pilots participated in this research. Eye
movement data were collected by a portable head-mounted eye-tracking
device, combined with a jet fighter simulator. To complete the task,
pilots have to search for, pursue, and lock-on a moving target whilst
performing air-to-air tasks. Results: There were significant
differences in pilots’ saccade duration (msec) in three operating
phases including searching (M=241, SD=332), pursuing (M=311, SD=392),
and lock-on (M=191, SD=226). Also, there were significant differences
in pilots’ pupil sizes (pixel2) of which lock-on phase was the largest
(M=27237, SD=6457), followed by pursuing (M=26232, SD=6070), then
searching (M=25858, SD=6137). Furthermore, there were significant
differences between expert and novice pilots on the percentage of
fixation on the HUD, time spent looking outside the cockpit, and the
performance of situational awareness (SA). Discussion: Experienced
pilots have better SA performance and paid more attention to the HUD
but focused less outside the cockpit when compared with novice pilots.
Furthermore, pilots with better SA performance exhibited a smaller
pupil size during the operational phase of lock-on whilst pursuing
a dynamic target. Understanding pilots’ visual scan patterns and
attention distribution are beneficial to the design of interface
displays in the cockpit and in developing human factors training
syllabi to improve safety of flight operations
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