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LR B-splines to approximate bathymetry datasets: An improved statistical criterion to judge the goodness of fit

The task of representing remotely sensed scattered point clouds with mathematical surfaces is ubiquitous to reduce a high number of observations to a compact description with as few coefficients as possible. To reach that goal, locally refined B-splines provide a simple framework to perform surface...

Authors
Vibeke Skytt
Gael Kermarrec,
Tor Dokken
Year
2022
Type
Academic article
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Publication

A Model-Based Approach to Support Safety-Related Decisions in the Petroleum Domain

Accidents on petroleum installations can have huge consequences; to mitigate the risk, a number of safety barriers are devised. Faults and unexpected events may cause barriers to temporarily deviate from their nominal state. For safety reasons, a work permit process is in place: decision makers...

Authors
Leonardo Montecchi
Atle Refsdal
Paolo Lollini
Andrea Bondavalli
Year
2016
Type
Academic chapter
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Publication

Modelling Geomechanical Impact of CO2 Injection and Migration Using Precomputed Response Functions

When injecting CO2 or other fluids into a geological formation, pressure plays an important role both as a driver of flow and as a risk factor for mechanical integrity. The full effect of geomechanics on aquifer flow can only be captured using a coupled flow-geomechanics model. In order to solve...

Authors
Odd Andersen
Halvor Møll Nilsen
Sarah Eileen Gasda
Year
2016
Type
Academic chapter
Publication

Combination of a sorting grid and a square mesh panel to optimize size selection in the North-East Arctic cod (Gadus morhua) and redfish (Sebastes spp.) trawl fisheries

Sorting grids and square mesh panels are the two most-applied technical devices to supplement codend size- and species-selection in demer- sal trawls. In the Barents Sea gadoid fishery, the compulsory size-selectivity system comprises a mesh section with a sorting grid followed by a diamond mesh...

Authors
Manu Sistiaga
Bent Herrmann
Eduardo Grimaldo
Roger B. Larsen
Leonore Olsen
Jesse Brinkhof
Ivan Tatone
Year
2018
Type
Academic article
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Publication

Comparison of fishing efficiency between biodegradable gillnets and conventional nylon gillnets

Gillnets made of a new biodegradable resin (polybutylene succinate co-adipate-co-terephthalate (PBSAT) were tested under commercial fishing conditions to compare their fishing performance with that of conventional nylon (PA) nets. The relative catch efficiency between the two gillnet 15 types was...

Authors
Eduardo Grimaldo
Bent Herrmann
Biao Su
Heidi Moe Føre
Jørgen Vollstad
Leonore Olsen
Roger B. Larsen
Ivan Tatone
Year
2019
Type
Academic article
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Publication

Size selectivity and length-dependent escape behaviour of haddock in a sorting device combining a grid and a square mesh panel

Size selectivity of a new sorting section combining a sorting grid and a square mesh panel was tested for haddock (Melanogrammus aeglefinus) in the Barents Sea demersal trawl fishery. Sampling data for a wide size range enabled investigating the selection process for this species in detail, both for...

Authors
Bent Herrmann
Manu Sistiaga
Eduardo Grimaldo
Roger B. Larsen
Leonore Olsen
Jesse Brinkhof
Ivan Tatone
Year
2018
Type
Academic article
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Publication

The effect of long-term use on the Catch efficiency of Biodegradable gillnets

The effect of long-term use on the catch efficiency of biodegradable gillnets was investigated during commercial fishing trials and in controlled lab aging tests. The relative catch efficiency between biodegradable and nylon gillnets was evaluated over three consecutive fishing seasons for Atlantic...

Authors
Eduardo Grimaldo
Bent Herrmann
Nadine Jacques
Stephan Kubowicz
Kristine Cerbule
Biao Su
Roger B. Larsen
Jørgen Vollstad
Year
2020
Type
Academic article
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