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In the homogenization theory, there are many examples where the effective conductivities of composite structures are power means of the local conductivities. The main aim of this paper is to initiate research concerning geometric construction of some power means of three or more variables. We...

The main aim of this paper is to contribute to the recently initiated research concerning geometric constructions of means, where the variables are appearing as line segments. The present study shows that all Lehmer means of two variables for integer power k and for k = m 2 , where m is an integer...

In the Arctic, presence of sea ice presents a challenge to safe and sustainable operations. To optimize planning and minimize impact of inadvertent oil spills, oil-in-ice experiments were performed at the HSVA Arctic Environmental Test Basin (AETB) from 14 March to 4 April 2017. Following an under...

In order to improve the knowledge of the real behaviour of existing structures,structural health monitoring (SHM) is usually carried out. Initial calculations of a buttress dam located in Norway has been carried out to evaluate dam safety against the design loads. From this analysis, it was...

Regionally, an ice cover in fjords of mainland Norway may form and break up repeatedly during winter. Due to relatively high water temperatures, the freeze-up process is expected to be related to freshwater-induced stratification in the fjords in conjunction with low air temperatues. In an attempt...

An attempt has been made to predict the ice rubble field load on Norströmsgrund lighthouse by using Cohesive Element (CE) formulation. Two sub-load events were selected to validate the numerical and material model used in simulation of interaction of the ice rubble field and lighthouse. A literature...

Since 2017, observations of ice conditions have been made in the northern Norwegian fjord, Beisfjord, to better understand the mechanisms of ice formation and variability in ice thickness, crystallography, and properties including salinity and δ 18 O. Data from Fall 2017 to Spring 202 0 have...

The construction industry has a significant impact in terms of financial and environmental resources but is vastly behind other sectors in terms of digitalization. The potential of this industry to be improved by new technology has been reflected in huge trends in research for terms such as...

The snow galleries along the Iron Ore railway line in Northern Sweden have faced problems in recent years due to increasingly large snow loads, and several galleries have been damaged. These incidents motivated an evaluation of the maximum load supported by the galleries before collapse, which is...

Static ice loads are a significant aspect of the design of hydropower dams in Norway due to their low height. Results are presented from a preliminary study to investigate whether elastic foam could be used to reduce static ice loads. Frames with stress cells were mounted on the dam at...

When assessing the sliding stability of a concrete dam, the influence of large-scale asperities in the sliding plane is often ignored due to limitations of the analytical rigid body assessment methods provided by current dam assessment guidelines. However, these asperities can potentially improve...

The launch of MF Estelle, the world’s first commercial autonomous passenger ferry, in Stockholm in 2023 has accelerated the need to establish a Remote Operation Centre (ROC) to manage multiple vessels with fewer human supervisors, reducing operational costs. This transition, by technological...

Abstract Background Boars undergo physiological and biochemical changes in semen composition as they grow from puberty to sexual maturity. However, comprehensive metabolomic profiles of boar semen remain uncharacterised. Understanding metabolic alterations in semen during this period is important...

As researchers unravel the underlying mechanisms governing time-dependent electrical degradation[1], thin film piezoelectric microelectromechanical systems (piezoMEMS) display electrical lifetimes satisfactory for a wide range of technological applications. Even in the harsh ambient of space[2]. As...