Browsing Faculty of Mathematics and Natural Sciences by Title
Now showing items 214-233 of 9919
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Algorithmic Complexity of Clustering and Low-Rank Approximation Problems
(Doctoral thesis, 2021-03-29)The two most popular unsupervised learning problems are k-Clustering and Low-Rank Approximation. Consider a set of n datapoints, in the k-Clustering problem, the objective is to partition these points into k clusters and ... -
An Algorithmic Meta-Theorem for Graph Modification to Planarity and FOL
(Journal article; Peer reviewed, 2020)In general, a graph modification problem is defined by a graph modification operation ⊠ and a target graph property 𝒫. Typically, the modification operation ⊠ may be vertex removal, edge removal, edge contraction, or edge ... -
Algorithms for covering multiple submodular constraints and applications
(Journal article; Peer reviewed, 2022)We consider the problem of covering multiple submodular constraints. Given a finite ground set N, a weight function \(w: N \rightarrow \mathbb {R}_+\), r monotone submodular functions \(f_1,f_2,\ldots ,f_r\) over N and ... -
Algorithms for Linearly Ordered Boolean Formulas
(Master thesis, 2016-06-30)This thesis considers a class of propositional boolean formulas on which various problems related to satisfiability are efficiently solvable by a dynamic programming algorithm. It mainly consists of two larger parts: the ... -
Algorithms for rainbow vertex colouring diametral path graphs
(Master thesis, 2022-06-01) -
Algorithms for the Rainbow Vertex Coloring Problem on Graph Classes
(Journal article; Peer reviewed, 2020)Given a vertex-colored graph, we say a path is a rainbow vertex path if all its internal vertices have distinct colors. The graph is rainbow vertex-connected if there is a rainbow vertex path between every pair of its ... -
Algoritmisk tenkning og kreativitet
(Master thesis, 2023-06-01)Den raske teknologiutviklingen har ført til at det stadig stilles nye krav til befolkningens kompetanse og ferdigheter. Algoritmisk tenkning og kreativitet anses som essensielle ferdigheter i det 21.århundre. Gjennom ... -
Alias - Designing an application for creating personalised comics aimed for the Children and Youth Clinic at Haukeland University Hospital
(Master thesis, 2019-12)Information that is handed out by hospitals is not always personalised for patients and their motivation is often lacking. Communication between healthcare and patients is mostly textual and verbal, sometimes overwhelming, ... -
ALICE measurement of the \(J/\psi\) nuclear modification factor at mid-rapidity in Pb–Pb collisions at \(\sqrt{{s}_{NN}}=\) 5.02 TeV
(Peer reviewed; Journal article, 2017-11)ALICE at the LHC provides unique capabilities to study charmonium production at low transverse momenta ( p T ). At central rapidity, ( |y|<0.8 ), ALICE can reconstruct J/ ψ via their decay into two electrons down to zero ... -
ALICE measurements of flow coefficients and their correlations in small (pp and p–Pb) and large (Xe–Xe and Pb–Pb) collision systems
(Peer reviewed; Journal article, 2019)Many observables which are used as a signature of the collective effects in heavy-ion collisions when measured in high multiplicity pp and pA interactions reveal a very similar behaviour. We will present first measurements ... -
ALICE results on system-size dependence of charged-particle multiplicity density in p–Pb, Pb–Pb and Xe–Xe collisions
(Peer reviewed; Journal article, 2019)Particle production at LHC energies involves the interplay of hard (perturbative) and soft (non-perturbative) QCD processes. Global observables, such as the charged-particle multiplicity, are related to the initial geometry ... -
ALICE TPC Upgrade Activities for LHC Run 3 and Beyond: "SAMPA ASIC Tests with GEM Detector Prototype"
(Master thesis, 2015-09-11)The Time Projection Chamber (TPC) signal readout of the ALICE detector is being upgraded to accommodate the higher collision rates and -energies during LHC Run 3 in 2018. Due to the increased collision rates, the TPC drift ... -
The ALICE TPC, a large 3-dimensional tracking device with fast readout for ultra-high multiplicity events
(Peer reviewed; Journal article, 2010-10-01)The design, construction, and commissioning of the ALICE Time-Projection Chamber (TPC) is described. It is the main device for pattern recognition, tracking, and identification of charged particles in the ALICE experiment ... -
The ALICE Transition Radiation Detector: Construction, operation, and performance
(Peer reviewed; Journal article, 2018-02)The Transition Radiation Detector (TRD) was designed and built to enhance the capabilities of the ALICE detector at the Large Hadron Collider (LHC). While aimed at providing electron identification and triggering, the TRD ... -
Alien plants, animals, fungi and algae in Norway:an inventory of neobiota
(Peer reviewed; Journal article, 2019-08-03)We present the results of an inventory and status assessment of alien species in Norway. The inventory covered all known multicellular neobiota, 2496 in total, 1039 of which were classified as naturalised. The latter ... -
Alien species in Norway: Results from quantitative ecological impact assessments
(Journal article, 2020)1. Due to globalisation, trade and transport, the spread of alien species is increasing dramatically. Some alien species become ecologically harmful by threatening native biota. This can lead to irreversible changes in ... -
Aligning a Splice Graph to a Genomic Sequence
(Master thesis, 2005-06-01) -
Alignment of the ATLAS Inner Detector in Run 2
(Journal article; Peer reviewed, 2020-12-24)The performance of the ATLAS Inner Detector alignment has been studied using pp collision data at s√=13TeV collected by the ATLAS experiment during Run 2 (2015–2018) of the Large Hadron Collider (LHC). The goal of the ... -
Alkaline sill intrusions in sedimentary basins: emplacement of the Mussentuchit Wash Sill in San Rafael Swell, Utah
(Journal article; Peer reviewed, 2022)Sills are important components of magmatic plumbing systems because of their role in magma storage. Previous studies have indirectly investigated sill propagation and architecture by using laboratory experiments, remote ... -
Alkyl-phenanthrenes in early life stage fish: differential toxicity in Atlantic haddock (Melanogrammus aeglefinus) embryos
(Journal article; Peer reviewed, 2023)Tricyclic polycyclic aromatic hydrocarbons (PAHs) are believed to be the primary toxic components of crude oil. Such compounds including phenanthrene are known to have direct effects on cardiac tissue, which lead to ...