Results 41 to 50 of about 160,553 (342)

Plot Quality Aided Plot-to-Track Association in Dense Clutter for Compact High-Frequency Surface Wave Radar

open access: yesRemote Sensing, 2022
Due to high false alarm rate and low positioning accuracy of compact high-frequency surface wave radar in moving vessel detection, false plot-to-track association often occurs during moving vessel tracking, thus leading to track fragmentation and false ...
Weifeng Sun   +4 more
doaj   +1 more source

Synthetic vascular ultrasound imaging through coupled fluid-structure interaction and ultrasound simulations [PDF]

open access: yes, 2010
Although ultrasonic imaging is commonly applied in cardiovascular research and clinical practice, current blood flow and vessel wall imaging methods are still hampered by several limitations.
Degroote, Joris   +4 more
core   +2 more sources

Tracking of the Internal Jugular Vein in Ultrasound Images Using Optical Flow

open access: yes, 2017
Detection of relative changes in circulating blood volume is important to guide resuscitation and manage variety of medical conditions including sepsis, trauma, dialysis and congestive heart failure.
Karami, Ebrahim   +2 more
core   +1 more source

MAGI: A Low-Cost IoT Architecture for Distributed AIS-Based Vessel Monitoring and Maritime Emissions Assessment in Panama

open access: yesApplied System Innovation
Real-time vessel tracking and environmental assessment in developing regions face significant challenges due to the high cost and proprietary constraints of commercial Automatic Identification System (AIS) services. We introduce MAGI, an open-source, low-
Miguel Hidalgo-Rodriguez   +4 more
doaj   +1 more source

Predicting Destinations by Nearest Neighbor Search on Training Vessel Routes

open access: yes, 2018
The DEBS Grand Challenge 2018 is set in the context of maritime route prediction. Vessel routes are modeled as streams of Automatic Identification System (AIS) data points selected from real-world tracking data.
Amariei, Ciprian   +3 more
core   +1 more source

Nilpotent Approximations of Sub-Riemannian Distances for Fast Perceptual Grouping of Blood Vessels in 2D and 3D [PDF]

open access: yes, 2017
We propose an efficient approach for the grouping of local orientations (points on vessels) via nilpotent approximations of sub-Riemannian distances in the 2D and 3D roto-translation groups $SE(2)$ and $SE(3)$.
Bekkers, Erik J.   +2 more
core   +2 more sources

Robust MPC-Based Fault-Tolerant Control for Trajectory Tracking of Surface Vessel

open access: yesIEEE Access, 2018
A robust control method, based on a model predictive control, is developed for the trajectory tracking of a surface vessel with sensor failures. The kinematic model of a surface vessel is first obtained.
Yu Zheng, Zhilin Liu, Lutao Liu
doaj   +1 more source

Vessel tractography using an intensity based tensor model with branch detection [PDF]

open access: yes, 2013
In this paper, we present a tubular structure seg- mentation method that utilizes a second order tensor constructed from directional intensity measurements, which is inspired from diffusion tensor image (DTI) modeling.
Cetin, Suheyla   +7 more
core   +1 more source

Metastasis on pause: How dormant tumor cells stay hidden within the tumor microenvironment and evade immune surveillance

open access: yesMolecular Oncology, EarlyView.
Dormant cancer cells can hide in distant organs for years, evading treatment and the immune system. This review highlights how signals from the surrounding tissue and immune environment keep these cells inactive or trigger their reawakening. Understanding these mechanisms may help develop therapies to eliminate or control dormant cells and prevent ...
Kanishka Tiwary   +1 more
wiley   +1 more source

White Matter Hyperintensity Burden and Short‐Interval Change Associated With Sleep Apnoea in the UK Biobank

open access: yesAnnals of Clinical and Translational Neurology, EarlyView.
ABSTRACT Background and Purpose White matter hyperintensities (WMH) are a core neuroimaging marker of cerebral small vessel disease (CSVD). Sleep apnoea (SA) is a recognized vascular risk factor, but its associations with regional WMH burden, short‐interval WMH change and cognitive performance in population‐based cohorts remain incompletely defined. We
Peng Cheng   +4 more
wiley   +1 more source

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