Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 11 of 11 for “"dynamic positioning"”.
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Systems Theoretic Process Analysis applied to an Offshore Supply Vessel dynamic positioning system
… (OSV) that incorporate software-intensive dynamic positioning in support of target vessel escort operations. The analysis begins by analyzing the OSVs in the context of the Navy's organizational structure and then delves into assessing the functional relationship between OSV system …
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SeaVipers - Computer Vision and Inertial Position Reference Sensor System (CVIPRSS)
… for use as a Position Reference System (PRS) in Dynamic Positioning (DP). Using a combination of robotics and CV techniques, the sensor provides range and heading information to a selected reference object. The proposed optical system is superior to existing ones because it does not depend upon …
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Analysis of dynamic acoustic source positioning : an autonomous swarm approach
… acoustic communication with respect to source positioning must be developed that takes advantage of the unique nature of sound propagation through the underwater environment while minimizing the number and energy use of the source agents. Through the use of an objective function, a dynamic …
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Implications of Bunker Consumption Monitoring in Liner Shipping
The Thesis researches how accommodation specific dynamic positioning (DP) simulator courses can be developed. The purpose of the study was to identify critical elements during advanced marine DP operations and which to include in a simulator training course. The aim was to minimize risk and …
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Media tables : an extensible method for developing multi-user media interaction platforms for shared spaces
… instances. The design requires precise and dynamic positioning of multiple objects in order to enable real-time multi-user interactions with media applications. Technical analysis shows the approach l:o be robust, scalable to various sizes, and accurate to a within a few millimeters of …
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Systems theoretic accident analysis of an offshore supply vessel collision
… Supply Vessels equipped with software-intensive Dynamic Positioning Systems. The Causal Analysis based on STAMP (CAST) is compared with the Root Cause Analysis, a traditional chain of events based model, used by the original investigation team after the collision. Linear chain of event models …
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Cooperative localization for autonomous underwater vehicles
… challenging due to the absence of Global Positioning System (GPS) reception or features at known positions that could otherwise have been used for position computation. Thus Autonomous Underwater Vehicle (AUV) applications typically require the pre-deployment of a set of beacons.This …
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Cooperative localization for autonomous underwater vehicles
… challenging due to the absence of Global Positioning System (GPS) reception or features at known positions that could otherwise have been used for position computation. Thus Autonomous Underwater Vehicle (AUV) applications typically require the pre-deployment of a set of beacons. This …
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The development of advanced multivariable, linear and nonlinear control design methods with applications to marine vehicles
… and Shuttle Tanker vessels, where nonlinear hydrodynamics raise the associated issue of nonlinear control. A 3-DOF model is presented for investigating Dynamic Positioning control, a problem where directional thrusters maintain ship position and heading against environmental disturbances. The …
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Nonlinear Control and Robust Observer Design for Marine Vehicles
… the sliding mode concept, is developed for the dynamic positioning of ships. The observer provides the estimates of linear velocities of the ship and bias from the slowly varying environmental loads. It also filters out wave frequency motion to avoid wear of actuators and excessive fuel …
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Faith positions: Re -reading gender, race, and Christianity in nineteenth -century American women's writing
… I am able to examine the nature of belief as a dynamic positioning force that intersects directly with other positioning forces, particularly those determined by gender and race. And, by organizing my study across a range of these "faith positions," I am able to work beyond the usual …