Hierarchical Agent Based System for General Aviation CD&R Under Free Flight

2002 ◽  
Author(s):  
Jie Rong ◽  
Sangeeta Bokadia ◽  
Surya Shandy ◽  
John Valasek
Keyword(s):  
General Aviation ◽  
Free Flight ◽  
Agent Based

Free Flight Cockpit Displays of Traffic and Weather: Effects of Dimensionality and Data Base Integration

1997 ◽  
Vol 41 (1) ◽  
pp. 18-22 ◽  
Author(s):  
Janelle Viera O'Brien ◽  
Christopher D. Wickens
Keyword(s):  
Data Base ◽  
Research Effort ◽  
General Aviation ◽  
Free Flight ◽  
Weather Effects ◽  
Flight System ◽  
Weather Information ◽  
Air Traffic Controllers ◽  
Flight Instructors ◽  
Cockpit Displays

In any Free Flight system, pilots must have displays which effectively depict traffic and weather information as more and more responsibility for separation from such hazards transfers from air traffic controllers to pilots. This research effort seeks to address the issues of dimensionality (3D versus 2D coplanar displays) and data base integration (separation or integration of traffic and weather information within displays). Seventeen general aviation flight instructors flew a series of en route trials with four display types in which dimensionality, data base integration, and hazard geometries were manipulated. Analysis of the data revealed that the 2D displays resulted in a smaller percentage of conflicts with traffic and weather hazards. The results also suggested that displays in which traffic and weather were integrated resulted in fewer hazard conflicts for trials in which both hazard types were critical to maneuver selection. Maneuver strategy was also found to vary by scenario geometry.

Agent-Based Approach to Free-Flight Planning, Control, and Simulation

2009 ◽  
Vol 24 (1) ◽  
pp. 14-17 ◽  
Author(s):  
Michal Pechoucek ◽  
David Sislak
Keyword(s):  
Free Flight ◽  
Agent Based ◽  
Flight Planning

Human Factors Systems Engineering as a Requirement for the Safe and Efficient Transition to Free Flight

1996 ◽  
Vol 40 (2) ◽  
pp. 102-105
Author(s):  
Rolf J. Braune ◽  
Dieter W. Jahns ◽  
Alvah C. Bittner
Keyword(s):  
Human Factors ◽  
Systems Engineering ◽  
General Aviation ◽  
Design Development ◽  
Technological Systems ◽  
Free Flight ◽  
Top Down ◽  
Analysis Methodology ◽  
Aviation Technology ◽  
A Current

This paper discusses a top-down analysis methodology for the design, development and evaluation of advanced technological systems like those being considered for General Aviation Free Flight and also the Advanced General Aviation Technology Experiment (AGATE). A current project sponsored by the FAA's Civil Aeromedical Institute is being introduced as an example.

Total etch dentin bonding systems: scanning electron microscopy of the resin-dentin hybrid layer

1992 ◽  
Vol 50 (2) ◽  
pp. 1092-1093
Author(s):  
Jorge Perdigao
Keyword(s):  
Composite Resin ◽  
Mechanical Interlocking ◽  
Hybrid Layer ◽  
Agent Based ◽  
Dentin Bonding ◽  
Acid Agent ◽  
Bond Strengths ◽  
Main Component ◽  
Bonding Systems ◽  
New Generation

In 1955, Buonocore introduced the etching of enamel with phosphoric acid. Bonding to enamel was created by mechanical interlocking of resin tags with enamel prisms. Enamel is an inert tissue whose main component is hydroxyapatite (98% by weight). Conversely, dentin is a wet living tissue crossed by tubules containing cellular extensions of the dental pulp. Dentin consists of 18% of organic material, primarily collagen. Several generations of dentin bonding systems (DBS) have been studied in the last 20 years. The dentin bond strengths associated with these DBS have been constantly lower than the enamel bond strengths. Recently, a new generation of DBS has been described. They are applied in three steps: an acid agent on enamel and dentin (total etch technique), two mixed primers and a bonding agent based on a methacrylate resin. They are supposed to bond composite resin to wet dentin through dentin organic component, forming a peculiar blended structure that is part tooth and part resin: the hybrid layer.

Cognitive Factors Mediate the Relation Between Age and Flight Path Maintenance in General Aviation

2016 ◽  
Vol 6 (2) ◽  
pp. 81-90 ◽  
Author(s):  
Kathleen Van Benthem ◽  
Chris M. Herdman
Keyword(s):  
Cognitive Functioning ◽  
Flight Path ◽  
General Aviation ◽  
Cognitive Factors ◽  
Pilot Performance ◽  
Pilot Error ◽  
Age Related ◽  
And Performance ◽  
Relationship Of ◽  
The Relationship

Abstract. Identifying pilot attributes associated with risk is important, especially in general aviation where pilot error is implicated in most accidents. This research examined the relationship of pilot age, expertise, and cognitive functioning to deviations from an ideal circuit trajectory. In all, 54 pilots, of varying age, flew a Cessna 172 simulator. Cognitive measures were obtained using the CogScreen-AE ( Kay, 1995 ). Older age and lower levels of expertise and cognitive functioning were associated with significantly greater flight path deviations. The relationship between age and performance was fully mediated by a cluster of cognitive factors: speed and working memory, visual attention, and cognitive flexibility. These findings add to the literature showing that age-related changes in cognition may impact pilot performance.

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