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This paper presents the Semifree Flight theory used in a civil air traffic control (ATC) system to improve the capability of the traditional Free Flight mode. The progressiveness and hidden defects of the “Free Flight” model in civil aviation are analysed, and the Semifree Flight ATC system mode is introduced. Moreover, this paper presents the coll...
In aerial applications, for identifying friend and foe, Traffic control and air defense, a system called IFF (identification friend or foe) for military vehicles or ATC (air traffic control) for civilian vehicles is used. For unmanned aerial vehicles (UAVs), because of widely use, it is inevitable to use IFF/ATC systems for both air defense against...
Identification of when and where moving areas intersect is an important problem in maritime operations and air traffic control. This problem can become particularly complicated when considering large numbers of objects, and when taking into account the curvature of the earth. In this paper, we present an approach to conflict identification as a ser...
Mental workload is a well-known concept with a long development history. It can be used to examine students’ attitudes at the end of the educational process and compare them in groups or separately. However, building a continuous workload profile across the range of task complexity increase is still an urgent issue. All four groups of methods used...
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... Broach , Farmer, and Young (1999) examined diff erential prediction for African-American applicants taking the Air Traffi c Control Specialist (ATCS) Aptitude Test. Th e ATCS is a multisection test that is designed to measure a mixture of job specifi c knowledge as well as general aptitudes important for work in air traffi c control. ...
In this chapter we review the research and concept of predictive bias, present a new theory of when and how predictive bias will occur, and create a list of methodological and substantive confounds that complicate research on predictive bias. We note that educational and organizational researchers have often used different methods to operationalize the same concept in academic and work settings, respectively. We review these approaches and recommend a modified method based on the examination of regression plots and residuals. A new theory is presented that addresses how and when predictive bias would occur using the existing definition (i.e., the Cleary Model). Theoretically, we suggest that a performance determinants framework provides a good foundation for understanding how and when predictive bias can occur. We illustrate key concepts in our theory using existing research. We suggest that the nature of predictive bias is dependent on the reason a predictor is correlated with subsequent performance. We then use this theory to guide a review of previous research testing for the presence of predictive bias across a range of personnel selection and academic admissions tools. Although much of the literature indicates that professional selection tools are unbiased for native speakers of English in the U.S., the most troubling finding is the scarcity of information for many of the most popular selection and admissions tools.
The influence of cognitive style on performance in a novel dynamic task modelled on the task of controlling air traffic was investigated. It was hypothesized that participants who preferred a more adaptive cognitive style would maintain better rule adherence and safe distances between aircraft in a low-fidelity air traffic control task than those who preferred a more innovative style. Problems were presented to participants using computer-based scenarios in screening, practice, and experimental trials. Performance was measured by the number of times the participant violated two types of scenario rules. Screening, practice, and experimental performance were analysed separately. Cognitive style had a significant effect on performance only during experimental trials. Performance of individuals who preferred a more adaptive style improved across experimental trials while those preferring a more innovative style did not. Results suggest that the more innovative participants, although perhaps having some initial advantage, may not be able to sustain performance in this type of task. Published in 2001 by John Wiley & Sons, Ltd.
