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To increase energy efficiency and reduce greenhouse gas (GHG) emissions in the shipping industry, an accurate prediction of the ship performance at sea is crucial. This paper proposes a new power prediction method based on minimizing a normalized root mean square error (NRMSE) defined by comparing...

Wave loads on lattices of marine structures, such as wind parks with shared mooring systems, are considered. Modal excitation induced by second-order low-frequency wave loads is derived, leading to modal quadratic transfer functions. The consequence for the modal loads, of applying Newman’s...

IT vendors’ promises are likely to meet sound skepticism from prospective clients. If a particular technology is in vogue and seen as a “hype,” clients are under pressure to buy the technology while, at the same time, skepticism about its claimed benefits might be reinforced. Finding a balance...

To evaluate the suitability of materials and solutions in building envelopes, it is necessary to quantify the relevant climate loads. The critical climate load is typically a combination of multiple parameters, such as temperature and precipitation. Climate indices may be used for finding critical...

Circular economy (CE) is necessary for achieving sustainability goals. Nonetheless, the distillation of CE practices into business operations has been unsatisfactory as firms struggle to transition to CE. There is an increase in studies that have attempted to identify challenges impeding the...

Four plausible design concepts are applied together to investigate composite bend–twist propeller-blade designs that show high twisting per bending deflection. The design concepts are first explained on a simplified blade structure with limited unique geometric features to determine generalized...

The maritime industry has begun to look into autonomous ships as an alternative to conventional ships due to growing pressure to reduce the environmental impact of maritime transportation, to increase safety, to mitigate the growing challenges in recruiting seafarers, and to increase profit margins...

Post-harvest changes in the quality of cut and whole S. latissima upon 23 days storage with or without acidification at different temperatures were studied by bacterial counts, amino acids composition, and 1H-NMR profiling of extracted metabolites. Lowering the temperature inhibited bacterial growth...

I dette prosjektet har en målsetting vært å utvikle et håndholdt instrument for måling av vanninnhold i klippfisk. Det er dokumentert at punkt-målinger med nær-infrarød spektroskopi (NIRS) egner seg godt til formålet. Det er viktig å måle dypt inn i fisken og på flere punkter for å få et godt...

Norwegian fish farming has traditionally taken place in open net pens at the coast and in the fjords. With the aim of utilising new areas, innovative farm designs for open ocean locations have emerged in recent years. The government is developing a regulatory framework for operating in these areas...

Plastic pollution is a growing global concern. Although the pollution itself is transboundary and knows no borders—the accumulation of plastics can have a more detrimental impact depending on where it is. In this study, we focus on the Arctic, an area where fragile ecosystems are increasingly under...

In the gap region of tandem cylinders, within the reattachment regime, bi-stability is seen to be cellular. Direct numerical simulations at a Reynolds number of 500, and a gap ratio of 3.0, show that shedding of gap vortices occurs in spanwise cells, with lengths between 0.3 and 2.7 cylinder...

Automatic controllers work best when the system they control can be sufficiently well modelled. This is a problem for control of autonomous ships in mixed traffic situations where the autonomous ship interacts with conventional ships, as the crew on other ships can and will exert unexpected...

The accurate estimation of buildings' solar potential contributes to boost the exploitation of solar energy at high latitudes. The decomposition of global irradiation into the direct and diffuse fractions is a fundamental step of the solar irradiance model chain. Diffuse and direct irradiation are...