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norskFakultet for naturvitenskap og teknologi
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Towards automation in the fish processing industry using machine learning
(Master thesis; Mastergradsoppgave, 2023-04-11)This master project was inspired by challenges faced by commercial fisheries in the north of Norway of controlling food quality and food safety. In this thesis, four different ML models’ ability to do object and keypoint detection on specific anatomy parts of fish, has been studied. With the aim of recommending a suitable model to be part of a CV system for an industrial fish gutting machine that ... -
Presenting CODS (Cell Organelle Dynamic Simulation)
(Master thesis; Mastergradsoppgave, 2023-05-15)The interactions between organelles within living cells have an effect on the health of the organism [1]. One way to study this behavior is to develop algorithms which can automatically detect and track objects in microscopy video data. A large amount of data is needed to train algorithms to identify particular behaviors in subcellular machinery. If the case of segmentation is considered, videos of ... -
UAV as an inspection tool for power lines in Troms: Assessment of UAVs as a viable alternative to already established methods for inspection of power lines.
(Master thesis; Mastergradsoppgave, 2018-06-02)Power line inspection is one of the most important things in a modern society, and therefore it is important that it be kept in a functional state. Because of this, many methods are used to keep it that way. There are many factors to consider before using UAVs as a viable alternative to already established methods. Factors such as robustness against harsh weather, limits to its range and battery ... -
The three missing terms in Ramanujan’s septic theta function identity
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-02-23)On page 206 in his lost notebook, Ramanujan recorded the following enigmatic identity for his theta function φ(q): φ(e^{−7π√7}) = 7^{−3/4}φ(e^{−π√7}){1 + ( )^{2/7} + ( )^{2/7} + ( )^{2/7}}. We give the three missing terms. In addition, we calculate the class invariant G_{343} and further special values of φ(e^{−nπ}), for n = 7, 21, 35, and 49. -
Quantifying athlete wellness: Investigating the predictive potential of subjective wellness reports through a player monitoring system
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-25)This study investigated the potential of self-reported wellness data from a player monitoring system and its predictive power of individual match performance among a female professional football player cohort. Using longitudinal data collected from the Pm Reporter Pro mobile application and corresponding individual performance scores (InStat Index), the study investigated if pre-match perceived ... -
Modern Army for Modern Times or Private Paramilitary? Polish Territorial Defense Force as a Benchmark Case in Conflict Evolution
(Journal article; Tidsskriftartikkel, 2023)The new Polish military branch, the Territorial Defense Force (TDF), has been described both as a defensive tool against Russian hybrid warfare and as a private paramilitary force of the incumbent Law and Justice Party. This paper examines the strategic, political, and military purposes of the Territorial Defense Force using two theoretical models. One is designed for analyzing units intended to ... -
Real gas flows issued from a source
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-23)Stationary adiabatic flows of real gases issued from a source of given intensity are studied. Thermodynamic states of gases are described by Legendrian or Lagrangian manifolds. Solutions of Euler equations are given implicitly for any equation of state and the behavior of solutions of the Navier–Stokes equations with the viscosity considered as a small parameter is discussed. For different intensities ... -
Health research requires efficient platforms for data collection from personal devices
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023)Data from consumer-based devices for collecting personal health-related data could be useful in diagnostics and treatment. This requires a flexible and scalable software and system architecture to handle the data. This study examines the existing mSpider platform, addresses shortcomings in security and development, and suggests a full risk analysis, a more loosely coupled component- based system for ... -
Data collection and analysis methods for smart nudging to promote physical activity: Protocol for a mixed methods study
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023)New digital technologies like activity trackers, nudge concepts, and approaches can inspire and improve personal health. There is increasing interest in employing such devices to monitor people’s health and well-being. These devices can continually gather and examine health-related information from people and groups in their familiar surroundings. Context-aware nudges can assist people in self-managing ... -
Segmentation of Polar Mesospheric Summer Echoes using Fully Convolutional Network
(Master thesis; Mastergradsoppgave, 2023-04-26)Polar Mesospheric Summer Echoes (PMSE) are strong coherent radar echoes that occur in the 80 to 90 km altitude range of the mesosphere during the Arctic summer months. These echoes are of significant interest to the space physics community as they provide insight into changes that occur in the atmosphere. To better understand these changes, large datasets of PMSE echoes need to be analysed. In ... -
Advancing Deep Learning for Marine Environment Monitoring
(Doctoral thesis; Doktorgradsavhandling, 2023-06-09)Marine environment monitoring has become increasingly significant due to the excessive exploitation of oceans, which detrimentally impacts ecosystems. Deep learning provides an effective monitoring approach by automating the analysis of vast amounts of observed image data, enabling stakeholders to make informed decisions regarding fishing quotas or conservation efforts. The success of deep learning ... -
How is reporting used to increase the safety in adventure tourism?
(Master thesis; Mastergradsoppgave, 2023-02-11)Modern land-based tourism in Longyearbyen had its beginning in the early 90s, but ships with tourists visiting Svalbard can be traced back as far as 1807. Over the past 20 years, the interest in Svalbard as a tourist destination has increased significantly, which has led to a rapid increase in the number of visitors. This relatively young industry have had to constantly adapt to this increased number ... -
Climate-controlled submarine landslides on the Antarctic continental margin
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-18)Antarctica’s continental margins pose an unknown submarine landslide-generated tsunami risk to Southern Hemisphere populations and infrastructure. Understanding the factors driving slope failure is essential to assessing future geohazards. Here, we present a multidisciplinary study of a major submarine landslide complex along the eastern Ross Sea continental slope (Antarctica) that identifies ... -
The Heliconoides Modified Dissolution Index-HMDI: Do methane seepage environments affect the preservation state of Heliconoides inflatus?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-24)Pteropods are holoplanktonic molluscs presently endangered because their fragile aragonitic shell is very sensitive to ocean acidification. The preservation of pteropods, and in particular of the mesopelagic Heliconoides (Limacina) inflatus, has been used to assess aragonite saturation state in Quaternary sediments (Limacina Dissolution Index, LDX) as an inferred proxy for climatic changes. Three ... -
Terminology and ontology development for semantic annotation: A use case on sepsis and adverse events
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-08)Annotations enrich text corpora and provide necessary labels for natural language processing studies. To reason and infer underlying implicit knowledge captured by labels, an ontology is needed to provide a semantically annotated corpus with structured domain knowledge. Utilizing a corpus of adverse event documents annotated for sepsis-related signs and symptoms as a use case, this paper details ... -
Deep-water sand transfer by hyperpycnal flows, the Eocene of Spitsbergen, Arctic Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-11)Flood-generated hyperpycnal flows are dense, sediment-laden, turbulent flows that can form long-lived, bottom-hugging turbidity currents, which undoubtedly transport large volumes of fine-grained sediments into the ocean. However, their ability in transferring sand into deep-water basins is debated. This study presents sedimentological evidence of sandy hyperpycnal flow deposits (hyperpycnites) in ... -
An investigation into the causal factors of the Kråknes landslide
(Mastergradsoppgave; Master thesis, 2021-05-15)On the 3rd of June 2020, a landslide measuring 600 meters long and 160 meters wide initiated along the shoreline at Kråknes, in Alta municipality in Troms and Finnmark County. The landslide was comprised of a series of smaller slides, which destroyed eight houses and a caravan in the process. Fortunately, no human lives were lost in the event. Due to the widespread presence of sensitive clays along ... -
A comparative study of lens-less and lens-based optical imaging using full electric field analysis
(Mastergradsoppgave; Master thesis, 2021-05-13)The focus of this thesis is to investigate the feasibility of a lens-less label-free microscope system, and compare this with a conventional lens-based microscope. The imaging performance of conventional microscopes are greatly dependent on the objective lens, due to their inherent physical space constraint and spherical aberrations. We, therefore, will investigate the conceptual feasibility of a ... -
Advances in understanding subglacial meltwater drainage from past ice sheets
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-04-17)Meltwater drainage beneath ice sheets is a fundamental consideration for understanding ice–bed conditions and bed-modulated ice flow, with potential impacts on terminus behavior and iceshelf mass balance. While contemporary observations reveal the presence of basal water movement in the subglacial environment and inferred styles of drainage, the geological record of former ice sheets, including ... -
The Hambergfjellet Formation on Bjørnøya – sedimentary response to early Permian tectonics on the Stappen High
(Journal article; Tidsskriftartikkel; Peer reviewed, 2023-02-14)On Bjørnøya, the exhumed crest of the Stappen High, the lower Permian (Cisuralian) Hambergfjellet Formation represents the only exposed part of the Bjarmeland Group carbonate platform, which occurs widely elsewhere in the subsurface of the Barents Shelf. A complex stratigraphic architecture has earlier been noted for the Hambergfjellet Formation and thickness estimates range from c. 50 to more than ...
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