Blar i Department of Mathematics på tittel
Viser treff 737-756 av 938
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Robusthet ved skadereservering - Chain-Ladder og influens funksjoner
(Master thesis, 2011-06-01)I denne oppgaven har jeg sett på hvordan uteliggere kan påvirke IBNR reserven i skadereservering. Jeg har studert influens funksjoner for den klassiske Chain-Ladder metoden, og videre sett at uteliggere kan påvirke ... -
The Role of Wettability Alteration in Subsurface CO2 Storage: Modeling and Numerical Analysis
(Doctoral thesis, 2021-12-06)This dissertation is aimed to provide mathematical frameworks to assess the large-scale deployment of CO2 in a subsurface formation, where the formation wettability is assumed to be altering through exposure time to the ... -
Rotational effects on exchange flows across a submerged sill
(Journal article; Peer reviewed, 2021)This paper presents new laboratory-scale numerical simulations of density-driven exchange flows generated across an idealised, submerged sill obstruction under both non-rotating and rotating frames of reference using the ... -
Ruin probability and optimal dividend policy for models with investment
(Doctoral thesis, 2012-11-06)In most countries the authorities impose capital requirements on insurance companies in order to avoid the adverse consequences to society when insurance companies default on claims. Since holding capital is costly, this ... -
S100A4 mRNA-protein relationship uncovered by measurement noise reduction
(Journal article; Peer reviewed, 2020)Intrinsic biological fluctuation and/or measurement error can obscure the association of gene expression patterns between RNA and protein levels. Appropriate normalization of reverse-transcription quantitative PCR (RT-qPCR) ... -
Sammenhenger mellom koder, matroider, grafer og simplisielle komplekser
(Master thesis, 2008)Denne masteroppgaven handler hovedsakelig om å studere sammenhenger mellom ulike em- ner innen algebra og kombinatorikk. De matematiske konseptene som studeres, er lineære koder, matroider, grafer og simplisielle komplekser, ... -
Sampling error distribution for the ensemble Kalman filter update step
(Peer reviewed; Journal article, 2012)In recent years, data assimilation techniques have been applied to an increasingly wider specter of problems. Monte Carlo variants of the Kalman filter, in particular, the ensemble Kalman filter (EnKF), have gained significant ... -
Scene Reconstruction Using Level Sets and Graph Cuts
(Master thesis, 2009-07-17) -
Screening for Circulating Inflammatory Proteins Does Not Reveal Plasma Biomarkers of Constant Tinnitus
(Journal article; Peer reviewed, 2023)Background and Objective Tinnitus would benefit from an objective biomarker. The goal of this study is to identify plasma biomarkers of constant and chronic tinnitus among selected circulating inflammatory proteins. ... -
Scroll codes over curves of higher genus
(Peer reviewed; Journal article, 2010)We construct linear codes from scrolls over curves of high genus and study the higher support weights di of these codes. We embed the scroll into projective space Pk-1 and calculate bounds for the di by considering the ... -
Segmentation of data traces with applications to dipmeter oil well measurements
(Statistical report no. 18, Research report, 1988-02) -
Selection for biparental inheritance of mitochondria under hybridization and mitonuclear fitness interactions
(Journal article; Peer reviewed, 2021)Uniparental inheritance (UPI) of mitochondria predominates over biparental inheritance (BPI) in most eukaryotes. However, examples of BPI of mitochondria, or paternal leakage, are becoming increasingly prevalent. Most ... -
Semi-conditional variational auto-encoder for flow reconstruction and uncertainty quantification from limited observations
(Journal article; Peer reviewed, 2021)We present a new data-driven model to reconstruct nonlinear flow from spatially sparse observations. The proposed model is a version of a Conditional Variational Auto-Encoder (CVAE), which allows for probabilistic ... -
Semiparametric model selection for copulas
(Master thesis, 2013-06-03)This thesis will consider the performance of the cross-validation copula information criterion, xv-CIC, in the realm of finite samples. The theory leading to the xv-CIC will be outlined, and an analysis will be conducted ... -
Sequential Data Assimilation in High Dimensional Nonlinear Systems
(Doctoral thesis, 2011-10-21)Since its introduction in 1994, the ensemble Kalman filter (EnKF) has gained a lot of attention as a tool for sequential data assimilation in many scientific areas. Due to its computationally fast and easy to implement ... -
Sequential Monte Carlo Methods for Bayesian Filtering
(Master thesis, 2008) -
Sequential multilevel assimilation of inverted seismic data
(Journal article; Peer reviewed, 2023)We consider estimation of absolute permeability from inverted seismic data. Large amounts of simultaneous data, such as inverted seismic data, enhance the negative effects of Monte Carlo errors in ensemble-based Data ... -
Sequestration of Carbon in Saline Aquifers Mathematical and Numerical Analysis
(Doctoral thesis, 2004-04-30)The work in this thesis focuses equally on two main topics. The first of these subjects deals with development of criteria for monotonicity of con- trol volume methods. These methods are important and frequently used for ... -
Severi varieties on blow-ups of the symmetric square of an elliptic curve
(Journal article; Peer reviewed, 2023)We prove that certain Severi varieties of nodal curves of positive genus on general blow-ups of the twofold symmetric product of a general elliptic curve are nonempty and smooth of the expected dimension. This result, ... -
Sexual dimorphism in the familial aggregation of tinnitus
(Journal article; Peer reviewed, 2020-11)Twin and adoption studies point towards a genetic contribution to tinnitus; however, how the genetic risk applies to different forms of tinnitus is poorly understood. Here, we perform a familial aggregation study and ...