Zooplankton are keystone organisms that provide a critical link between primary production and higher-order predators in the marine food web, as well as facilitating the sequestration of carbon within the ocean. In this context, there is considerable interest in the detection of zooplankton swarms...
Inoculation has become a common practice to achieve grain refinement in metal additive manufacturing, and its application in steels has been extensively investigated in recent years. However, the nucleation behavior of equiaxed grains under high temperature gradient and fast cooling rate...
In this work, the contrast seen in low-angle annular dark-field (LAADF) scanning transmission electron microscopy (STEM) of Guinier-Preston zones (GP-zones) in Al-Mg-Si alloys (6xxx) is discussed by STEM simulations, conventional STEM and 4D-STEM data. It is found that GP-zones of the 6xxx system...
Water quality problems due to stagnation during periods of low or no demand in buildings, such as the growth of Legionella bacteria, may arise in potable cold and hot water systems. Premise plumbing installations should therefore be designed and constructed to prevent bacterial growth, and then...
Slender marine structures, such as risers and power cables are subject to various loads, where Vortex-Induced Vibrations (VIV) is known to have a significant impact on accumulation of fatigue damage in the materials. The stochastic nature of VIV makes it challenging to do accurate fatigue...
This paper presents a data-driven approach for estimating the linear and quadratic transfer functions relating incoming waves to hydrodynamic loads on floaters. The procedure relies on constructing a nonlinear auto-regressive (NARX) surrogate model for forecasting the hydrodynamic loads and a...
Hydrodynamic model-scale experiments are an intrinsic part of the design of marine structures, as they enable validating and calibrating the involved hydrodynamic numerical models. Such seakeeping experiments are generally conducted using a simple spring-based mooring system, with fixed properties...
The Arctic Ocean is characterized by substantial seasonal and inter-annual variability, of which the sources and impacts are not yet fully understood. Here, we analyze how much of the variability found in in situ observations of biogeochemical and ecological variables collected at the Long-Term...
For large ports and terminals, the loading and discharge operations have to a great extent been automated already. However, for the vast number of small ports, for instance all Norwegian ports, this large-scale automation is not possible due to the small size of the ports compared to the cost of...
The so-called non-linear vector fitting (NL-VF) technique was recently introduced as a new method for rational function approximation in the frequency domain (FD). While the classical vector fitting (VF) fits a rational function to a given frequency response, NL-VF calculates the rational function...
Robust motion planning in highly dynamic environments affected by challenging conditions remains an important task for autonomous robots, and an open problem for the robotics community. This paper proposes significant extensions to the elastic band method that gives more robustness to uncertainty in...
Hydrogen and ammonia are considered crucial carbon-free energy carriers optimally suited for seasonal chemical storage and balancing of the energy system. In this context, longitudinally staged combustion systems represent an attractive technology in power generation for their capability of...