Browsing Faculty of Mathematics and Natural Sciences by Title
Now showing items 3717-3736 of 10315
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Gorgonophilus canadensis (Copepoda: Lamippidae) a parasite in the octocoral Paragorgia arborea – relation to host, reproduction, and morphology
(Journal article; Peer reviewed, 2022)The family Lamippidae (Cyclopoida) are endosymbionts mainly occurring in shallow water octocorals and records from deep-sea corals are few. Here we investigated the relationship between the lamippid Gorgonophilus canadensis ... -
GPS scintillation and irregularities at the front of an ionization tongue in the nightside polar ionosphere
(Peer reviewed; Journal article, 2014-10)In this paper we study a tongue of ionization (TOI) on 31 October 2011 which stretched across the polar cap from the Canadian dayside sector to Svalbard in the nightside ionosphere. The TOI front arrived over Svalbard ... -
GPS Scintillations and Losses of Signal Lock at High Latitudes During the 2015 St. Patrick's Day Storm
(Peer reviewed; Journal article, 2018-09)We investigate the Global Positioning System (GPS) amplitude and phase scintillations during a severe geomagnetic storm on 17 March 2015. The auroral oval expanded significantly due to a strongly southward interplanetary ... -
GPS Scintillations and TEC Variations in Association With a Polar Cap Arc
(Journal article; Peer reviewed, 2021)A unique example of a polar cap arc producing clear amplitude and phase scintillations in GPS L-band signals is presented using observations from an all-sky imager and a GPS receiver and a digital ionosonde at Resolute Bay ... -
GPS scintillations associated with cusp dynamics and polar cap patches
(Peer reviewed; Journal article, 2017)This paper investigates the relative scintillation level associated with cusp dynamics (including precipitation, flow shears, etc.) with and without the formation of polar cap patches around the cusp inflow region by the ... -
Gradient Methods for Source Identification Problems
(Master thesis, 2020-08-19)In this thesis we are interested in the problem of identifying point sources in an advection-diffusion model, given some measurements. By writing the problem as a minimization problem, we use a non-linear conjugate gradient ... -
Grain Deformation Processes in Porous Quartz Sandstones – Insight from the Clusters of Cataclastic Deformation Bands
(Peer reviewed; Journal article, 2017)Porous sandstones represent classical reservoirs for water or hydrocarbons. Deformation in such granular material is due to tectonic events and occurs through the process of cataclasis, implying the crushing of the grains ... -
Grain-Size Analysis of the Late Pleistocene Sediments in the Corinth Rift: Insights into Strait Influenced Hydrodynamics and Provenance of an Active Rift Basin
(Journal article; Peer reviewed, 2022)Grain-size analysis of the sediments in borehole M0079A, which is located in the Corinth Rift, was used to explore hydrodynamic conditions and provenance in the Late Pleistcene Corinth Rift. Grain-size populations that ... -
GRANADA consensus on analytical approaches to assess associations with accelerometer-determined physical behaviours (physical activity, sedentary behaviour and sleep) in epidemiological studies
(Journal article; Peer reviewed, 2021)The inter-relationship between physical activity, sedentary behaviour and sleep (collectively defined as physical behaviours) is of interest to researchers from different fields. Each of these physical behaviours has been ... -
Graph Algebras and Derived Graph Operations
(Journal article, 2023)We revise our former definition of graph operations and correspondingly adapt the construction of graph term algebras. As a first contribution to a prospective research field, Universal Graph Algebra, we generalize some ... -
Graph Constructions for the Contact Process with a Prescribed Critical Rate
(Journal article; Peer reviewed, 2021)We construct graphs (trees of bounded degree) on which the contact process has critical rate (which will be the same for both global and local survival) equal to any prescribed value between zero and λc(Z), the critical ... -
A Graph Feature Auto-Encoder for the Prediction of Unobserved Node Features on Biological Networks
(Journal article; Peer reviewed, 2021)Background Molecular interaction networks summarize complex biological processes as graphs, whose structure is informative of biological function at multiple scales. Simultaneously, omics technologies measure the variation ... -
Graph modification problems: Beyond the known boundaries
(Doctoral thesis, 2017-11-17) -
Graphene and graphene oxide on Ir(111) are transparent to wetting but not to icing
(Journal article; Peer reviewed, 2021)Anti-icing coatings reduce the freezing onset temperature for water by changing the chemical and physical environment at the water-substrate interface to prevent ice nucleation and growth. Graphene oxide has several ... -
Graphical Computing Solution for Industrial Plant Engineering
(Master thesis, 2017-06-21)When preparing an engineering operation on an industrial plant, reliable and updated models of the plant must be available for correct decisions and planning. However, especially in the case of offshore oil and gas ... -
Gravitino dark matter and the flavour structure of R-violating operators
(Peer reviewed; Journal article, 2009-06-15)We study gravitino dark matter and slow gravitino decays within the framework of R-violating supersymmetry, with particular emphasis on the flavour dependence of the branching ratios and the allowed R-violating couplings. ... -
Gravitino Dark Matter with Entropy Production constrained by Big Bang Nucleosynthesis
(Master thesis, 2016-12-16)We are looking at a gravitino dark matter scenario with a general neutralino next-to-lightest supersymmetric particle. We are considering the primary decay channels of the neutralino, and we define the supersymmetric ... -
Gravity currents at Ormen Lange
(Department of Applied Mathematics report, Research report, 2001-12) -
Gravity modeling: Calculations based on porosity-density context
(Master thesis, 2010-06-17)A normal way to model the gravity from a layered model is to determine the densities from the velocities, and then adjusting the densities within acceptable ranges to get a satisfactory fit with the observed gravity. In ... -
Gray whale habitat use and reproductive success during seismic surveys near their feeding grounds: comparing state-dependent life history models and field data
(Journal article; Peer reviewed, 2022)We used a stochastic dynamic programming (SDP) model to quantify the consequences of disturbance on pregnant western gray whales during one foraging season. The SDP model has a firm basis in bioenergetics, but detailed ...