Now showing items 1-10 of 125
Coastal Environment, Technology and Innovation in the Arctic (CETIA) 2011-14.
(Conference object; Konferansebidrag, 2012)
Performance of an Ultrasonic Imaging System Based on a 45-MHz Linear PVDF Transducer Array: A Numerical Study
(Journal article; Tidsskriftartikkel; Peer reviewed, 2011)
New designs of high-resolution ultrasonic imaging systems that operate in the 30–100MHz region, for example, those based on linear transducer systems, are currently being investigated for medical purposes. Acoustic waves with frequencies in this range can detect microscopic structures in human tissue but will typically only penetrate a few mm because of large attenuation. However, this is sufficient ...
Bioremediation Treatment of Hydrocarbon-Contaminated Arctic Soils: Influencing Parameters
(Journal article; Tidsskriftartikkel; Peer reviewed, 2014)
Marine stewardship and complexity – How to enhance a better process of risk governance in the Norwegian area of the Arctic Ocean?
(Conference object; Konferansebidrag, 2016-01)
Evaluating Visual Saliency Algorithms: Past, Present and Future
(Tidsskriftartikkel; Peer reviewed; Journal article, 2015-09-01)
With the introduction of compressed sensing (CS) theory, investigation into exploiting sparseness and optimizing compressive sensing performance has ensued. Compressed sensing is highly applicable to images, which naturally have sparse representations. Improvements in the area of image denoising have resulted from the combination of highly-directional transforms with shrinkage and thresholding ...
Prediction of the long-term performance of green liquor dregs as a sealing layer to prevent the formation of acid mine drainage
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-10-08)
One of the mining industry's main concerns is the management of waste rock and tailings generated by sulfide ore extraction. Upon exposure of atmospheric oxygen, iron sulfides oxidize generating acidity. Infiltrating water form a metal-rich acidic leachate called acid mine drainage (AMD), that can cause serious environmental problems. Green liquor dregs (GLD) is a material that resists the passage ...
Group Based Asymmetry – A Fast Saliency Algorithm
(Chapter; Bokkapittel, 2015-12-18)
In this paper, we propose a saliency model that makes two major changes in a latest state-of-the-art model known as group based asymmetry. First, based on the properties of the dihedral group D4 we simplify the asymmetry calculations associated with the measurement of saliency. This results is an algorithm which reduces the number of calculations by at-least half that makes it the fastest among the ...
Infrared Detection for Anti-Icing Systems in Ship Operations
(Conference object; Konferansebidrag, 2014)
Shipping oil from the Russian Arctic: Past experiences and future prospects
(Journal article; Tidsskriftartikkel; Peer reviewed, 2015-06)
Transport of oil from Russian Arctic ports to Western markets was insignificant prior to 2002. In 2002, there was a major surge, with 5 million tonnes delivered westwards through the Barents Sea. By 2004, this had increased to 12 million tonnes. Since then, annual volumes have been on levels between 9 and 15 million tonnes. In the near future, the flow of oil cargo in the Arctic may rise ...
Multiphysics Simulation of Infrared Signature of an Ice Cube
(Peer reviewed; Conference object; Konferansebidrag, 2015-12-11)
This poster presents the Multiphysics numerical methodologies used to simulate the Infrared (IR) signature of an ice cube when taken out of the cold environment (-28 C) and allowed to warm at room temperature conditions by means of natural convection. The ice cube is chosen to simplify the geometry. The cubical geometry can be discretized simply and hence allows easy application of Multiphysics ...