Browsing Institutt for matematiske fag by Document Types "Journal article"
Now showing items 21-40 of 999
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A non-strictly pseudoconvex domain for which the squeezing function tends to 1 towards the boundary
(Journal article; Peer reviewed, 2018)In recent work by Zimmer it was proved that if Ω ⊂ C n is a bounded convex domain with C ∞-smooth boundary, then Ω is strictly pseudoconvex provided that the squeezing function approaches one as one approaches the boundary. ... -
A note on entire L-functions
(Journal article; Peer reviewed, 2019)In this paper, we exhibit upper and lower bounds with explicit constants for some objects related to entire L-functions in the critical strip, under the generalized Riemann hypothesis. The examples include the entire ... -
A note on the local well-posedness for the whitham equation
(Journal article; Peer reviewed, 2015)We prove local well-posedness for the Whitham equation in Hs, s>32s>32, for both solitary and periodic initial data. -
A NOTE ON WELL-POSEDNESS OF BIDIRECTIONAL WHITHAM EQUATION
(Journal article; Peer reviewed, 2019)We consider the initial-value problem for the bidirectional Whitham equation, a system which combines the full two-way dispersion relation from the incompressible Euler equations with a canonical shallow-water nonlinearity. ... -
A Parametric Version of Forstnerič’s Splitting Lemma
(Journal article; Peer reviewed, 2018)We construct solution operators to the \overline{\partial }-equation that depend continuously on the domain. This is applied to derive a parametric version of Forstnerič’s splitting lemma: If both the maps and the domains ... -
A remark on the Alexandrov–Fenchel inequality
(Journal article; Peer reviewed, 2018)In this article, we give a complex-geometric proof of the Alexandrov–Fenchel inequality without using toric compactifications. The idea is to use the Legendre transform and develop the Brascamp–Lieb proof of the Prékopa ... -
A Review of Finite Approximations, Archimedean and Non-Archimedean
(Journal article; Peer reviewed, 2018)We give a review of finite approximations of quantum systems, both in an Archimedean and a non-Archimedean setting. Proofs will generally be omitted. In the Appendix we present some numerical results. -
A simple embedded discrete fracture-matrix model for a coupled flow and transport problem in prous media
(Journal article; Peer reviewed, 2018)Accurate simulation of fluid flow and transport in fractured porous media is a key challenge in subsurface reservoir engineering. Due to the high ratio between its length and width, fractures can be modeled as lower ... -
A step towards reduced order modelling of flow characterized by wakes using Proper Orthogonal Decomposition
(Journal article; Peer reviewed, 2017)High fidelity simulations of flow can be quite demanding, involving up to O(106) to O(109) degrees of freedom, and several hours or days of computational time, even on powerful parllel architectures. These techniques become ... -
A time-series model for estimating temporal variation in phenotypic selection on laying dates in a Dutch great tit population
(Journal article; Peer reviewed, 2019)1. Temporal and spatial variation in phenotypic selection due to changing environmental conditions is of great interest to evolutionary biologists, but few existing methods estimating its magnitude take into account the ... -
A toolbox for fitting complex spatial point process models using integrated nested Laplace approximation (INLA)
(Journal article; Peer reviewed, 2012) -
A verifiable shuffle for the GSW cryptosystem
(Journal article; Peer reviewed, 2019)This paper provides the first verifiable shuffle specifically for fully homomorphic schemes. A verifiable shuffle is a way to ensure that if a node receives and sends encrypted lists, the content will be the same, even ... -
Accelerating multiscale simulation of complex geomodels by use of dynamically adapted basis functions
(Journal article; Peer reviewed, 2019)A number of different multiscale methods have been developed as a robust alternative to upscaling and as a means for accelerated reservoir simulation of high-resolution geomodels. In their basic setup, multiscale methods ... -
Accounting for dynamics in self-optimizing control
(Journal article; Peer reviewed, 2019)Self-optimizing control focuses on minimizing the steady-state loss for processes in the presence of disturbances by holding selected controlled variables at constant set-points. The loss can further be reduced by controlling ... -
Accounting for individual-specific variation in habitat-selection studies: Efficient estimation of mixed-effects models using Bayesian or frequentist computation
(Journal article; Peer reviewed, 2019)1. Popular frameworks for studying habitat selection include resource‐selection functions (RSFs) and step‐selection functions (SSFs), estimated using logistic and conditional logistic regression, respectively. Both frameworks ... -
Accounting for interspecific competition and age structure in demographic analyses of density dependence improves predictions of fluctuations in population size
(Peer reviewed; Journal article, 2019)Understanding species coexistence has long been a major goal of ecology. Coexistence theory for two competing species posits that intraspecific density dependence should be stronger than interspecific density dependence. ... -
Accounting for unobserved spatial variation in step selection analyses of animal movement via spatial random effects
(Peer reviewed; Journal article, 2023)Step selection analysis (SSA) is a common framework for understanding animal movement and resource selection using telemetry data. Such data are, however, inherently autocorrelated in space, a complication that could impact ... -
Accuracy of estimating the mean from rounded data
(Peer reviewed; Journal article, 2020)Rounding errors are an important factor in many statistical problems; therefore, statistical analysis of rounded data has recently received growing interest. In this paper we obtain an estimate of accuracy of the sample ... -
Actigraphy as an objective intra‑individual marker of activity patterns in acute‑phase bipolar disorder: a case series
(Journal article; Peer reviewed, 2018)Background Actigraphy could be an objective alternative to clinical ratings of motor activity in bipolar disorder (BD), which is of importance now that increased activity and energy are added as cardinal symptoms of ... -
Action Representation in the Mouse Parieto-Frontal Network
(Peer reviewed; Journal article, 2020)The posterior parietal cortex (PPC) and frontal motor areas comprise a cortical network supporting goal-directed behaviour, with functions including sensorimotor transformations and decision making. In primates, this network ...