An Innovative Interpolation Technique for Aeroacoustic Hybrid Methods

2011 ◽  
Author(s):  
Guilherme Cunha ◽  
Stephane Redonnet
Keyword(s):  
Hybrid Methods ◽  
Interpolation Technique

Satellite Images Vectorization Based on Clustering and Interpolation Technique

2017 ◽  
Vol 13 (3) ◽  
pp. 47-64
Author(s):  
Rehab F. Hassan ◽  
◽  
Lubna mhammed Bader
Keyword(s):  
Satellite Images ◽  
Interpolation Technique

Classification of methods for generating pseudo-CT from MRI images for MRI-alone RT

2017 ◽  
Vol 1 (3) ◽  
pp. 54
Author(s):  
BOUKELLOUZ Wafa ◽  
MOUSSAOUI Abdelouahab
Keyword(s):  
Performance Metrics ◽  
Radiation Treatment ◽  
Hybrid Methods ◽  
Dose Calculation ◽  
Absolute Error ◽  
Ct Images ◽  
General Technique ◽  
Therapy Field ◽  
The Brain

Background: Since the last decades, research have been oriented towards an MRI-alone radiation treatment planning (RTP), where MRI is used as the primary modality for imaging, delineation and dose calculation by assigning to it the needed electron density (ED) information. The idea is to create a computed tomography (CT) image or so-called pseudo-CT from MRI data. In this paper, we review and classify methods for creating pseudo-CT images from MRI data. Each class of methods is explained and a group of works in the literature is presented in detail with statistical performance. We discuss the advantages, drawbacks and limitations of each class of methods. Methods: We classified most recent works in deriving a pseudo-CT from MR images into four classes: segmentation-based, intensity-based, atlas-based and hybrid methods. We based the classification on the general technique applied in the approach. Results: Most of research focused on the brain and the pelvis regions. The mean absolute error (MAE) ranged from 80 HU to 137 HU and from 36.4 HU to 74 HU for the brain and pelvis, respectively. In addition, an interest in the Dixon MR sequence is increasing since it has the advantage of producing multiple contrast images with a single acquisition. Conclusion: Radiation therapy field is emerging towards the generalization of MRI-only RT thanks to the advances in techniques for generation of pseudo-CT images. However, a benchmark is needed to set in common performance metrics to assess the quality of the generated pseudo-CT and judge on the efficiency of a certain method.

Determination of Approximated Root of Nonlinear Equation by Interpolation Technique

2018 ◽  
Vol 50 (001) ◽  
pp. 133-136
Author(s):  
M. B. BROHI ◽  
A. A. SHAIKH ◽  
S. BHATTI ◽  
S. QUERSHI
Keyword(s):  
Nonlinear Equation ◽  
Interpolation Technique

scholarly journals Strengthening the EU’s resilience to hybrid threats

European View ◽  
2021 ◽  
pp. 178168582110046
Author(s):  
Sandra Kalniete ◽  
Tomass Pildegovičs
Keyword(s):  
Case Studies ◽  
Presidential Election ◽  
Turning Point ◽  
Hybrid Methods ◽  
Cyber Attacks ◽  
Political Will ◽  
Member States ◽  
Eu Member States ◽  
Us Presidential Election ◽  
Hybrid Threats

Against the backdrop of the deterioration of EU–Russia relations in recent years, there has been a shift in the awareness of hybrid threats all across the Union. At the same time, there is evidence of a growing political will to strengthen resilience to these threats. While hostile foreign actors have long deployed hybrid methods to target Europe, Russia’s intervention in Ukraine in 2014, interference in the 2016 US presidential election, and repeated cyber-attacks and disinformation campaigns aimed at EU member states have marked a turning point, exposing Western countries’ unpreparedness and vulnerability to these threats. This article analyses the EU’s resilience to hybrid warfare from institutional, regulatory and societal perspectives, with a particular focus on the information space. By drawing on case studies from member states historically at the forefront of resisting and countering Russian-backed disinformation campaigns, this article outlines the case for a whole-of-society approach to countering hybrid threats and underscores the need for EU leadership in a standard-setting capacity.

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