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The Norwegian University of Science and Technology (NTNU) has since the early 1970s published prediction models for estimated production rates, time consumption, and costs for rock works. Since the early development of the NTNU models the tunnelling industry has continuously improved and the models...

This paper considers adjusting a fully parametrized model predictive control (MPC) scheme to approximate the optimal policy for a system as accurately as possible. By adopting MPC as a function approximator in reinforcement learning (RL), the MPC parameters can be adjusted using Q-learning or policy...

As power systems around the world are rapidly evolving to achieve decarbonization objectives, it is crucial that power system planners and operators use appropriate models and tools to analyze and address the associated challenges. This paper provides a detailed overview of the properties of power...

A method for improving the power reference tracking capability of Virtual Synchronous Machines (VSM) by phase angle feed-forward (PAFF) control is proposed in this paper. The presented implementation includes compensation for the ac power flow dynamics and can be applied to any VSM-based control...

Gadolinium (Gd) is one of the rare earth elements (REY) and is widely used in magnetic resonance imaging (MRI) contrast agents. Anthropogenic Gd enrichment has frequently been found in wastewater treatment plant effluents in industrialised countries, rising concerns regarding effects on aquatic...

...https://blogg.sintef.no/digital/den-overraskende-forbindelsen-mellom-rent-vann-dansing-og-sensorer/...

Health and well-being are fundamental aspects of life, directly impacting the quality of life. Hope is a phenomenon that significantly relates to the quality of life. The purpose of this paper is to introduce hope in the context of design for health and well-being. By exploring the intersection of...

The quantitative distribution of different types of clusters in a binary NaF-AlF3 molten salt system with a series of cryolite ratios (CR, NaF/AlF3 molar ratio) was explored by in situ high-temperature Raman spectroscopy in conjunction with quantum chemistry (QC) ab initio calculations. Density...

Piezoelectric excitation of quartz mineral phase in granite using high-frequency and high-voltage alternating current (HF-HV-AC) is a potential new weakening pretreatment in comminution of rock. The present study addresses this topic numerically by quantifying the weakening effect on the compressive...

In the seafood processing sector in India, natural refrigerant such as NH₃ is currently replaced by Freon refrigerants such as HFC-404A, because these systems are comparably more compact, operate above atmospheric pressure and are less toxic. However, these synthetic refrigerants are one of the...

We study the interaction-induced migration of bubbles in shear flow and observe that bubbles suspended in elastoviscoplastic emulsions organize into chains aligned in the flow direction, similarly to particles in viscoelastic fluids. To investigate the driving mechanism, we perform experiments and...

The smectite-illite transition in shales due to subsidence, temperature changes and diagenesis influences many processes in a sedimentary basin that can contribute to overpressure build up like reducing the shale permeability. The smectite-rich layers can form sealing barriers to fluid flows that...

Momentum is gathering behind the goal of achieving net-zero CO₂ emissions by 2050 in Europe and around the world. Negative emissions via biomass or waste combustion with CO₂ capture can make net zero considerably easier to achieve. This study investigates CO₂ capture from combined heat and power...