Blar i Faculty of Mathematics and Natural Sciences på tittel
Viser treff 3660-3679 av 9927
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Heppa III Intercomparison Experiment on Electron Precipitation Impacts: 2. Model-Measurement Intercomparison of Nitric Oxide (NO) During a Geomagnetic Storm in April 2010
(Journal article; Peer reviewed, 2022)Precipitating auroral and radiation belt electrons are considered to play an important part in the natural forcing of the middle atmosphere with a possible impact on the climate system. Recent studies suggest that this ... -
Herbivory damage but not plant disease under experimental warming is dependent on weather for three subalpine grass species
(Journal article; Peer reviewed, 2022)Both theory and prior studies predict that climate warming should increase attack rates by herbivores and pathogens on plants. However, past work has often assumed that variation in abiotic conditions other than temperature ... -
Herding mesopelagic fish by light
(Peer reviewed; Journal article, 2019)To assess organisms forming mesopelagic scattering layers in the Red Sea, we took advantage of their reactions to light. We used a remotely operated vehicle (ROV) equipped with LED lamps for herding the acoustic targets ... -
The heritability curve and its applications to human non-Mendelian traits
(Doctoral thesis, 2023-12-08)Arvbarhet er et viktig mål for å beskrive en ikke-mendelsk egenskap; den måler i hvilken andel verdien av egenskapen påvirkes av genetisk materiale. I klassiske biometriske modeller er arvbarheten konstant over hele ... -
Herring (Clupea harengus) in Lindåspollene before and during spawning: spatial decisions and school dynamics
(Master thesis, 2011-06-01)Abstract This study reports on the school dynamics of a self-sustained local population of Atlantic herring (Clupea harengus) in Lindåspollene, south-western Norway, during pre-spawning and spawning, observed over a period ... -
Heterogeneity of impacts of high CO2 on the North Western European shelf
(Peer reviewed; Journal article, 2014-02-03)The increase in atmospheric CO2 is a dual threat to the marine environment: from one side it drives climate change, leading to modifications in water temperature, circulation patterns and stratification intensity; on the ... -
Heterogeneous distributed calibration framework for the high level trigger in ALICE
(Doctoral thesis, 2009-02-13)This thesis focusses on the development of a distributed and re-configurable online calibration environment for the ALICE (A Large Ion Collider Experiment) HLT (High Level Trigger). ALICE1 is one of the four major experiments ... -
Heterogeneous distribution of plankton within the mixed layer and its implications for bloom formation in tropical seas
(Peer reviewed; Journal article, 2015-06-11)Intensive sampling at the coastal waters of the central Red Sea during a period of thermal stratification, prior to the main seasonal bloom during winter, showed that vertical patches of prokaryotes and microplankton ... -
Heterogeneous Hydrate Nucleation on Calcite {1014} and Kaolinite {001} Surfaces: A Molecular Dynamics Simulation Study
(Master thesis, 2016-06-01)Natural gas hydrates are of significant interest due to the great amount of methane that can potentially be utilised as an energy source. These methane resources are trapped in ice-like form, which is a concern since ... -
Heterotrophic nanoflagellate grazing facilitates subarctic Atlantic spring bloom development
(Peer reviewed; Journal article, 2017)The subarctic Atlantic phytoplankton spring bloom is one of the largest biological features of the ocean; however, processes initiating the bloom are still not well understood. We hypothesize that the microbial grazing ... -
The Hexactinellid Deep-Water Sponge Vazella pourtalesii (Schmidt, 1870) (Rossellidae) Copes With Temporarily Elevated Concentrations of Suspended Natural Sediment
(Journal article; Peer reviewed, 2021)Plumes of re-suspended sediment potentially smother and clog the aquiferous system of filter-feeding sponges with unknown implications for their health. For the first time, we examined the physiological responses of repeated ... -
The Hfq RNA chaperone in the deep-branching Thermotogales lineage: Attempts to reveal its biological role
(Master thesis, 2015-02-01)Bacteria frequently use small RNAs (sRNAs) as part of their regulation of gene expression at the post-transcriptional level. Many of these sRNAs have been shown to depend on the RNA chaperone protein Hfq for their regulatory ... -
Hidden Markov and Hidden Semi-Markov models on Financial Timeseries
(Master thesis, 2020-09-11) -
Hidden semi-Markov-switching quantile regression for time series
(Journal article; Peer reviewed, 2021)A hidden semi-Markov-switching quantile regression model is introduced as an extension of the hidden Markov-switching one. The proposed model allows for arbitrary sojourn-time distributions in the states of the Markov-switching ... -
Hiding in the background: community-level patterns in invertebrate herbivory across the tundra biome
(Peer reviewed; Journal article, 2019)Invertebrate herbivores depend on external temperature for growth and metabolism. Continued warming in tundra ecosystems is proposed to result in increased invertebrate herbivory. However, empirical data about how current ... -
Hierarchical Bayesian Survival Analysis of Age-Specific Data From Birds' Nests
(Master thesis, 2010-11-19)In this thesis, I first present the grassland birds data from Wells(2007) which is used by several different methods of estimating the nest survival rates. The hierarchical Bayesian method from Cao(2009) then is introduced ... -
Hierarchical clusterings of unweighted graphs
(Journal article; Peer reviewed, 2020)We study the complexity of finding an optimal hierarchical clustering of an unweighted similarity graph under the recently introduced Dasgupta objective function. We introduce a proof technique, called the normalization ... -
A Hierarchical Splitting Scheme to Reveal Insight into Highly Self-Occluded Integral Surfaces
(Peer reviewed; Journal article, 2012)In flow visualization, integral surfaces are of particular interest for their ability to describe trajectories of massless particles. In areas of swirling motion, integral surfaces can become very complex and difficult to ... -
The Higgs Boson in Less Constrained Supersymmetric Models
(Master thesis, 2012-06-01)In this thesis, we explore the phenomenological minimal supersymmetric standard model (pMSSM) in the context of the Higgs boson. If the emerging results from the LHC are real, will the pMSSM be able to accommodate this? ... -
Higgs boson production cross-section measurements and their EFT interpretation in the 4 ℓ decay channel at √s= 13 TeV with the ATLAS detector
(Journal article; Peer reviewed, 2020-10)Higgs boson properties are studied in the four-lepton decay channel (where lepton = e, μ) using 139 fb−1 of proton–proton collision data recorded at s√=13 TeV by the ATLAS experiment at the Large Hadron Collider. The ...