ABSTRACT Spiral structure is ubiquitous in the Universe, and pitch angle of arms spiral galaxies provide an important observable efforts to discriminate between different mechanisms arm formation evolution. In this paper, we present a hierarchical Bayesian approach galaxy determination, using data obtained through Galaxy Builder citizen science project. We new deal with large variations single ...

This paper presents an adaptive nonlinear controller for diving control of an autonomous underwater vehicle (AUV). So far, diving dynamics of an AUV has often been derived under various assumptions on the motion of the vehicle. Typically, the pitch angle of AUV has been assumed to be small in the diving plane. However, these kinds of assumptions may induce large modeling errors and further may ...