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Guobiao Cai, Lihui Liu, Bijiao He, Guilong Ling, Huiyan Weng and Weizong Wang
Chemical and electrical thrusters are generally utilized to control the attitude and orbit of spacecraft in aerospace. When they are firing, the exhaust expands into the vacuum environment, known as the vacuum plume. The plume flow can collide with space...
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Isabel C. Metz, Joost Ellerbroek, Thorsten Mühlhausen, Dirk Kügler, Stefan Kern and Jacco M. Hoekstra
Involving air traffic controllers and pilots into the bird strike prevention process is considered an essential step to increase aviation and avian safety. Prior to implementing operational measures such as real-time warning systems, it is vital to evalu...
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Lucy Blondell, Mark Z. Kos, John Blangero and Harald H. H. Göring
Statistical analysis of multinomial data in complex datasets often requires estimation of the multivariate normal (mvn) distribution for models in which the dimensionality can easily reach 10?1000 and higher. Few algorithms for estimating the mvn distrib...
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Andrea D?Ambrosio, Andrea Carbone, Dario Spiller and Fabio Curti
The problem of real-time optimal guidance is extremely important for successful autonomous missions. In this paper, the last phases of autonomous lunar landing trajectories are addressed. The proposed guidance is based on the Particle Swarm Optimization,...
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Louis A Merlin
Pág. 49 - 70
I present a method for calibrating the impedance parameter of a gravity spatial interaction model using only the median travel time as a measure of observed traveler behavior. Complete information about the spatial structure of origins, destinations, and...
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