Results 21 to 30 of about 160,553 (342)

Exponential ε-tracking and ε-stabilization of second-order nonholonomic SE(2) vehicles using dynamic state feedback [PDF]

open access: yes, 2002
In this paper, we address the problem of ε-tracking and ε-stabilization for a class of SE(2) vehicles with second-order nonholonomic constraints. We introduce a class of transformations called near-identity diffeomorphism that allow dynamic partial ...
Olfati-Saber, Reza
core   +1 more source

Automatic segmentation of coronary angiograms based on fuzzy inferring and probabilistic tracking

open access: yesBioMedical Engineering OnLine, 2010
Background Segmentation of the coronary angiogram is important in computer-assisted artery motion analysis or reconstruction of 3D vascular structures from a single-plan or biplane angiographic system.
Shoujun Zhou   +3 more
doaj   +1 more source

Robust output tracking control of a surface vessel [PDF]

open access: yes2008 American Control Conference, 2008
In this paper, tracking control of a three degree- of-freedom marine vessel is examined. The primary motivation for this work is the compensation needed for the added mass common to surface vessels, resulting in an asymmetric inertia matrix. Two control schemes are considered: a full- state feedback controller and an output feedback controller ...
Dongbin Lee   +3 more
openaire   +2 more sources

A Recursive Bayesian Approach To Describe Retinal Vasculature Geometry [PDF]

open access: yes, 2017
Demographic studies suggest that changes in the retinal vasculature geometry, especially in vessel width, are associated with the incidence or progression of eye-related or systemic diseases. To date, the main information source for width estimation from
Bharath, Anil Anthony   +1 more
core   +2 more sources

Global tracking for an underactuated ships with bounded feedback controllers [PDF]

open access: yes, 2012
In this paper, we present a global state feedback tracking controller for underactuated surface marine vessels. This controller is based on saturated control inputs and, under an assumption on the reference trajectory, the closed-loop system is globally ...
Chitour, Yacine   +2 more
core   +6 more sources

Surface Vessel Tracking in Airborne Infrared Imagery [PDF]

open access: yes2019 27th Signal Processing and Communications Applications Conference (SIU), 2019
Visual target tracking has been studied for decades and still remains a challenging problem. Ship tracking on infrared images has numerous challenges compared to conventional target tracking such as fast changing of appearance. Rapid appearance change caused by the manoeuvring movement of the target of image acquiring platform, confusion and occlusion ...
Cakiroglu, Ahmet, Ulusoy, Ilkay
openaire   +4 more sources

Marine Observing Applications Using AIS: Automatic Identification System

open access: yesFrontiers in Marine Science, 2019
The Automatic Identification System (AIS) is a real-time network of transmitters and receivers that allow vessel movements to be broadcast, tracked, and recorded.
Darren Wright   +4 more
doaj   +1 more source

Retinal blood vessels extraction using probabilistic modelling [PDF]

open access: yes, 2014
© 2014 Kaba et al.; licensee BioMed Central Ltd. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and ...
A Hoover   +22 more
core   +1 more source

Extending arterial stiffness assessment along the circumference using beam-steered ARFI and wave-tracking: A proof-of-principle study in phantoms and ex vivo

open access: yesComputational and Structural Biotechnology Journal, 2023
Background: To fully quantify arterial wall and plaque stiffness, acoustic radiation force impulse (ARFI)-induced wave-tracking along the entire vessel circumference is desired.
Judith T. Pruijssen   +4 more
doaj   +1 more source

An experimental and CFD study of liquid jet injection into a partially baffled mixing vessel: a contribution to process safety by improving the quenching of runaway reactions [PDF]

open access: yes, 2008
Thermal runaway remains a problem in the process industries with poor or inadequate mixing contributing significantly to these incidents. An efficient way to quench such an uncontrolled chemical reaction is via the injection of a liquid jet containing a ...
Fletcher, David F.   +3 more
core   +2 more sources

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