Now showing items 51-60 of 110
Numerical computations of two-dimensional solitary waves generated by moving disturbances
(John Wiley & Sons, Ltd, 1993-11-30)
Two-dimensional solitary waves generated by disturbances moving near the critical speed in shallow water are computed by a time-stepping procedure combined with a desingularized boundary integral method for irrotational ...
A Basic Problem of Resource Allocation in Target Tracking
(Acoustical Society of America, 1982-09)
Stochastic dynamic programming techniques are used to formulate and solve the problem of tracking two independent and stationary targets with one sensor in order to maximize a certain measure of performance. At any point ...
Topology and performance redesign of complex structures by large admissible perturbations
(Springer-Verlag; Springer-Verlag Berlin Heidelberg, 2000-10)
A methodology for topology redesign of com- plex structures by LargE Admissible Perturbations (LEAP) is developed. LEAP theory is extended to solve topology redesign problems using 8-node solid elements. The corresponding ...
Initial water impact of a wedge at vertical and oblique angles
(Kluwer Academic Publishers; Springer Science+Business Media, 2004-04)
This paper examines initial asymmetric wedge-impact flows with horizontal as well as vertical impact velocity. The method of two-dimensional vortex distributions is employed to model the initial-boundary-value problem. The ...
Towards Bathymetry-Optimized Doppler Re-Navigation for AUVs
(IEEE, 2005-09-17)
This paper describes a terrain-aided re-navigation
algorithm for autonomous underwater vehicles (AUVs) built
around optimizing bottom-lock Doppler velocity log (DVL)
tracklines relative to a ship derived bathymetric map. ...
Towards High-resolution Imaging from Underwater Vehicles
(SAGE, 2007-01)
Large area mapping at high resolution underwater continues to be constrained by sensor-level environmental constraints and the mismatch between available navigation and sensor accuracy. In this paper, advances are presented ...
Sensor Fusion of Structure-from-Motion, Bathymetric 3D, and Beacon-Based Navigation Modalities
(IEEE, 2002-08-07)
This paper describes an approach for the fusion of 30
data underwater obtained from multiple sensing modalities.
In particular, we examine the combination of imagebased
Structure-From-Motion (SFM) data with bathymetric
data ...
Optimal maintenance, repair, and replacement for Great Lakes marine diesels
(Elsevier, 1991-11-25)
Reliability-based models are developed and implemented to rationalize current winter layup replacement practices for one-engine and two-engine Great Lakes marine diesel ships. A semi-Markov competing-process approach is ...
Multi-Attribute Decision Analysis of Mandatory Ballast Water Treatment Measures in the US Great Lakes
(Pergamon; Elsevier, 2003-10)
Mandatory ballast water management, resulting in an increase of required freight rates on the St. Lawrence Seaway, could induce a modal shift away from marine transportation. Such a shift may cause such side effects as ...
Three-dimensional nonlinear statics of pipelaying using condensation in an incremental finite element algorithm
(Elsevier, 1990)
The problem of static, nonlinear three-dimensional deformation of pipelaying used in construction and installation of underwater pipelines is studied within the limits of small strain theory. The mathematical model consists ...