Direct support and general support maintenance repair parts and special tools lists (including depot maintenance repair parts and special tools) for air traffic control facility AN/TSQ-97 (NSN 5895-00-137-8548).

"23 November 1983."

Organizational maintenance manual : air traffic control central AN/TSW-7A (NSN 5820-01-018-1246).

"June 1979."

Direct support and general support maintenance repair parts and special tools list ... for air traffic control central AN/TSW-7A (NSN 5820-01-018-1246).

"18 January 1983."

Organizational maintenance repair parts and special tools lists for air traffic control facility AN/TSQ-97 (NSN 5895-00-137-8548).

"23 November 1983."

Hand receipt covering contents of components of end item (COEI), basic issue items (BII), and additional authorization list (AAL) : air traffic control central AN/TSW-7A (NSN 5895-01-018-1246).

"27 December 1985."

Serious problems continue to trouble the air traffic control workforce /

"For release ... May 25, 1989."

An analysis of relational complexity in an air traffic control conflict detection task

Theoretical analyses of air traffic complexity were carried out using the Method for the Analysis of Relational Complexity. Twenty-two air traffic controllers examined static air traffic displays and were required to detect and resolve conflicts. Objective measures of performance included conflict detection time and accuracy. Subjective perceptions of mental workload were assessed by a complexity-sorting task and subjective ratings of the difficulty of different aspects of the task. A metric quantifying the complexity of pair-wise relations among aircraft was able to account for a substantial portion of the variance in the perceived complexity and difficulty of conflict detection problems, as well as reaction time. Other variables that influenced performance included the mean minimum separation between aircraft pairs and the amount of time that aircraft spent in conflict.

Effects of traffic control on the soil physical quality and the cultivation of sugarcane

Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)

A compilation of selected air pollution emission control regulations and ordinances /

Earlier ed., 1965, issued by U.S. Robert A. Taft Sanitary Engineering Center, Cincinnati.

Traffic control systems in construction workzones /

"Final Report, November 1997-October 1999."

The timing of airport traffic control as influenced by weather and aircraft performance.

"Meteorological study sponsored by Air Navigation Development Board under Contract Cwb-8175 with the U.S. Weather Bureau."

Coordinated road-junction traffic control by dynamic programming

This paper presents a novel approach to road-traffic control for interconnected junctions. With a local fuzzy-logic controller (FLC) installed at each junction, a dynamic-programming (DP) technique is proposed to derive the green time for each phase in a traffic-light cycle. Coordination parameters from the adjacent junctions are also taken into consideration so that organized control is extended beyond a single junction. Instead of pursuing the absolute optimization of traffic delay, this study examines a practical approach to enable the simple implementation of coordination among junctions, while attempting to reduce delays, if possible. The simulation results show that the delay per vehicle can be substantially reduced, particularly when the traffic demand reaches the junction capacity. The implementation of this controller does not require complicated or demanding hardware, and such simplicity makes it a useful tool for offline studies or realtime control purposes.

Railway junction traffic control by heuristic methods

Traffic conflicts at railway junctions are very conmon, particularly on congested rail lines. While safe passage through the junction is well maintained by the signalling and interlocking systems, minimising the delays imposed on the trains by assigning the right-of-way sequence sensibly is a bonus to the quality of service. A deterministic method has been adopted to resolve the conflict, with the objective of minimising the total weighted delay. However, the computational demand remains significant. The applications of different heuristic methods to tackle this problem are reviewed and explored, elaborating their feasibility in various aspects and comparing their relative merits for further studies. As most heuristic methods do not guarantee a global optimum, this study focuses on the trade-off between computation time and optimality of the resolution.