Blar i Faculty of Mathematics and Natural Sciences på tittel
Viser treff 4040-4059 av 9860
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Improved opacity expansion for medium-induced parton splitting
(Journal article; Peer reviewed, 2020-06-30)We present a new expansion scheme to compute the rate for parton splittings in dense and finite QCD media. In contrast to the standard opacity expansion, our expansion is performed around the harmonic oscillator whose ... -
Improved quantitative calibration of rock physics models
(Peer reviewed; Journal article, 2011-11)In reservoir characterization, rock-physics models provide the link between seismic observables (density, compressional and shear wavespeeds) and reservoir parameters such as porosity, lithology and fluid saturation. ... -
Improved seismic monitoring with OBS deployment in the Arctic: A pilot study from offshore western Svalbard
(Journal article; Peer reviewed, 2021)The mid‐ocean ridge system is the main source of earthquakes within the Arctic region. The earthquakes are recorded on the permanent land‐based stations in the region, although, smaller earthquakes remain undetected. In ... -
Improved stock estimation for Iceland scallops (Chlamys islandica) in the Svalbard area
(Master thesis, 2023-06-03)Iceland scallops (Chlamys islandica) were commercially harvested in the Svalbard fishery protection zone (FPZ) from 1986 to 1992, when the fishery ended due to overfishing. After approximately 30 years of prohibition, a ... -
An Improved Surface Boundary Condition for Large-Eddy Simulations Based on Monin–Obukhov Similarity Theory: Evaluation and Consequences for Grid Convergence in Neutral and Stable Conditions
(Peer reviewed; Journal article, 2020)Monin–Obukhov similarity theory is used in large-eddy simulation (LES) models as a surface boundary condition to predict the surface shear stress and scalar fluxes based on the gradients between the surface and the first ... -
An improved workflow for image- and laser-based virtual geological outcrop modelling
(Doctoral thesis, 2013-03-15)Photorealistic 3D models, representing an object’s surface geometry textured with conventional photography, are used for visualization, interpretation and spatial measurement in many disparate fields, such as cultural ... -
Improvement in burning velocity models for hydrogen in the gas explosion simulator FLACS
(Master thesis, 2021-04-07) -
Improvement of aquaculture management practice by integration of hydrodynamic modelling
(Journal article; Peer reviewed, 2021)Aquaculture has grown to become an important export industry in Norway. The Norwegian Food Safety Authorithy (NFSA) is responsible for the management of the production zones designated to aquaculture. Fish diseases and ... -
Improvements and extensions to the configuration tools of the TaskManager HLT software in the ALICE experiment at CERN
(Master thesis, 2007)This thesis concerns work done to improve andextend software that is used to configure nodesand trigger software in HLT under the ALICEexperiment at CERN. HLT is a large computercluster that will be used to reduce data ... -
Improvements on making BKW practical for solving LWE
(Journal article; Peer reviewed, 2021)The learning with errors (LWE) problem is one of the main mathematical foundations of post-quantum cryptography. One of the main groups of algorithms for solving LWE is the Blum–Kalai–Wasserman (BKW) algorithm. This paper ... -
Improving Efficiency in Parameter Estimation Using the Hamiltonian Monte Carlo Algorithm
(Master thesis, 2008)This thesis investigates three approaches to improve the performance of the Hamiltonian Monte Carlo algorithm. The first approach enhances the Hamiltonian Monte Carlo by suppressing random walk in the Gibbs sampling using ... -
Improving Interaction in Visual Analytics using Machine Learning
(Doctoral thesis, 2021-11-05)Interaction is one of the most fundamental components in visual analytical systems, which transforms people from mere viewers to active participants in the process of analyzing and understanding data. Therefore, fast and ... -
Improving knowledge-based treatment planning for lung cancer radiotherapy with automatic multi-criteria optimized training plans
(Journal article; Peer reviewed, 2023)Background: Knowledge-based planning (KBP) is a method for automated radiotherapy treatment planning where appropriate optimization objectives for new patients are predicted based on a library of training plans. KBP can ... -
Improving Parallel Sparse Matrix-vector Multiplication
(Master thesis, 2013-12-19)Sparse Matrix-vector Multiplication (SMvM) is a mathematical technique encountered in many programs and computations and is often heavily used. Solving SMvM in parallel allows for bigger instances to be solved, and problems ... -
Improving photon and proton radiotherapy of locally advanced non-small cell lung cancer
(Doctoral thesis, 2024-03-19)Pasienter med lokalavansert ikke-småcellet lungekreft (LA-NSCLC) har svulster som er store, vokser inn i andre strukturer i brystkassen, og/eller har spredt seg til regionale lymfeknuter. Disse pasientene er som oftest ... -
Improving Radar-Based Precipitation Nowcasts with Machine Learning Using an Approach Based on Random Forest
(Journal article; Peer reviewed, 2020)A binary classification model is trained by random forest using data from 41 stations in Norway to predict the precipitation in a given hour. The predictors consist of results from radar nowcasts and numerical weather ... -
Improving Salmonid Monitoring by Nocturnal Counting in Rivers
(Journal article; Peer reviewed, 2022)Accurate abundance estimates are crucial for evidence-based fisheries management. In rivers, drift dive counting and electrofishing are commonly used for quantifying fish abundance. However, the likelihood that fish are ... -
Improving Sequential Decisions – Efficiently Accounting for Future Learning
(Journal article; Peer reviewed, 2021)In sequential field development planning, past decisions not only directly affect the maximum achievable expected NPV but also influence the future information that can be used to reduce geological uncertainty. To act ... -
Improving size selection in the Norwegian red king crab (Paralithodes camtschaticus) fishery through modification to pot design and soak time
(Journal article; Peer reviewed, 2023)Red king crab (Paralithodes camtschaticus) represent a valuable inshore fisheries resource for communities in northern Norway. The fishery is regulated east of the 26th meridian by vessel quotas and a minimum landing size ... -
Improving Stability of Tree-Based Models
(Master thesis, 2023-06-01)Motivated by the instability of tree-based methods experienced by the insurance industry, this thesis provides innovative and novel methods for updating regression trees in a stable manner. All methods are shown to increase ...