Faculty of Mathematics and Natural Sciences: Recent submissions
Now showing items 1-20 of 7011
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New methods in Palaeopalynology: Classification of pollen through pollen chemistry
(Doctoral thesis, 2021-11-04)Pollen grains are one of the primary tools of palaeoecologists to reconstruct vegetation changes in the past. The description, counting and analysis of pollen grains (palynology) has contributed to our understanding of ... -
Improving Interaction in Visual Analytics using Machine Learning
(Doctoral thesis, 2021-11-05)Interaction is one of the most fundamental components in visual analytical systems, which transforms people from mere viewers to active participants in the process of analyzing and understanding data. Therefore, fast and ... -
Evaluating the suitability of RAS culture environment for rainbow trout and Atlantic salmon: A ten-year progression of applied research and technological advancements to optimize water quality and fish performance
(Doctoral thesis, 2020)Over the last several decades, recirculating aquaculture systems (RAS) have become a viable technology for the production of high-value food-fish. In Norway, for example, many Atlantic salmon smolt farms are now using RAS, ... -
Selected Topics in Cryptanalysis of Symmetric Ciphers
(Doctoral thesis, 2021-10-27)It is well established that a symmetric cipher may be described as a system of Boolean polynomials, and that the security of the cipher cannot be better than the difficulty of solving said system. Compressed Right-Hand ... -
Domestication-induced reduction in eye size revealed in multiple common garden experiments: The case of Atlantic salmon (Salmo salar L.)
(Journal article; Peer reviewed, 2021)Domestication leads to changes in traits that are under directional selection in breeding programmes, though unintentional changes in nonproduction traits can also arise. In offspring of escaping fish and any hybrid progeny, ... -
Amino Acid Carriers of the Solute Carrier Families 7 (SLC7) and 38 (SLC38) Are Involved in Leucine Sensing in the Brain of Atlantic Salmon (Salmo salar)
(Journal article; Peer reviewed, 2021)Sensing of amino acids in fish brain, especially branched-chain amino acids (BCAA) like leucine, is involved in regulation of feed intake through different mechanisms. However, there is limited information regarding the ... -
Homotopy scattering series for seismic forward modelling with variable density and velocity
(Journal article; Peer reviewed, 2021)We have derived a convergent scattering series solution for the frequency-domain wave equation in acoustic media with variable density and velocity. The convergent scattering series solution is based on the homotopy analysis ... -
Size selection of red king crab (Paralithodes camtschaticus) and behavioural response to experimental pot designs
(Master thesis, 2021-08-13) -
Targeted risk assessment of mercury exposure of recreational fishers: Are nephrops fishers in Norway at risk?
(Journal article; Peer reviewed, 2021)Recreational fishers often consume their catch, which may expose them to environmental contaminants. However, targeted risk assessment for exceeding the tolerable weekly intake (TWI) of a specific contaminant is often ... -
Trophic structure of mesopelagic species in the Northeast Atlantic Ocean based on stable isotopes of carbon and nitrogen
(Master thesis, 2021-09-03)The mesopelagic zone is one of the largest, yet among the least explored habitats of the planet. Possible estimates of fish living in this zone range from around 1 to 15 billon tones of biomass which is 10 to 15 times that ... -
Calibration of oxygen 1s ionization energies. Accurate energies for CO2, H2O, CO, and O2
(Journal article; Peer reviewed, 2021)Access to accurate reference data is a prerequisite in order to translate chemical shifts to an absolute scale for inner-shell ionization energies. Calibration standards for oxygen 1s (O 1s) ionization energies are less ... -
Coastal submesoscale processes and their effect on phytoplankton distribution in the southeastern Bay of Biscay
(Journal article; Peer reviewed, 2021)Submesoscale processes have a determinant role in the dynamics of oceans by transporting momentum, heat, mass, and particles. Furthermore, they can define niches where different phytoplankton species flourish and accumulate ... -
Polar lows – moist-baroclinic cyclones developing in four different vertical wind shear environments
(Journal article; Peer reviewed, 2021)Polar lows are intense mesoscale cyclones that develop in polar marine air masses. Motivated by the large variety of their proposed intensification mechanisms, cloud structure, and ambient sub-synoptic environment, we use ... -
The Covid-19 shutdown: when studying turns digital, students want more structure
(Journal article; Peer reviewed, 2021)In March 2020, universities in Norway and many other countries shut down due to the Covid-19 pandemic. The students lost access to classrooms, libraries, study halls, and laboratories. Studying turned digital. Because it ... -
Probabilistic Tsunami Hazard and Risk Analysis: A Review of Research Gaps
(Journal article; Peer reviewed, 2021)Tsunamis are unpredictable and infrequent but potentially large impact natural disasters. To prepare, mitigate and prevent losses from tsunamis, probabilistic hazard and risk analysis methods have been developed and have ... -
Improved seismic monitoring with OBS deployment in the Arctic: A pilot study from offshore western Svalbard
(Journal article; Peer reviewed, 2021)The mid‐ocean ridge system is the main source of earthquakes within the Arctic region. The earthquakes are recorded on the permanent land‐based stations in the region, although, smaller earthquakes remain undetected. In ... -
Integrating Cognitive Learning Strategies into Physics Instruction : Developing students’ approaches to physics and learning
(Doctoral thesis, 2021-03-24)Introductory physics courses are obligatory for many disciplines outside of physics. As experienced by many students, they are notoriously difficult, often with high failure rates. Many students, whether they passed or ... -
Mostar index and edge Mostar index of polymers
(Journal article; Peer reviewed, 2021)Let G=(V,E) be a graph and e=uv∈E. Define nu(e,G) be the number of vertices of G closer to u than to v. The number nv(e,G) can be defined in an analogous way. The Mostar index of G is a new graph invariant defined as ... -
Effect of different arachidonic acid levels in broodstock diet on egg quality of ballan wrasse (Labrus bergylta)
(Master thesis, 2021-07-31)The production of ballan wrasse (Labrus bergylta) is growing and is becoming a focus area for the aquaculture industry. As a result of rising louse numbers and problems with resistance, biological methods such as cleaner ... -
Early life growth is affecting timing of spawning in the semelparous Barents Sea capelin (Mallotus villosus)
(Journal article; Peer reviewed, 2021)Capelin (Mallotus villosus) is a forage fish and a key species in the Barents Sea (BS). The BS capelin are semelparous and hence only spawn once along the north coasts of Norway and Russia before they die. The age at ...