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norskFakultet for naturvitenskap og teknologi: Recent submissions
Now showing items 641-660 of 5445
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Methanotroph activity and connectivity between two seep systems north off Svalbard
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-06-14)Understanding methane flux dynamics in Arctic cold seep systems and the influence of oceanic currents on microbial methane-oxidizing bacteria (MOB) is crucial for assessing their impact on Arctic methane emissions. Here, we investigate methane dynamics and associated microbial communities at two cold seep areas, Norskebanken and Hinlopen Trough, North of Svalbard. Methane concentrations and methane ... -
Reducing Memory Overhead in CRDT for Collaborative Editing
(Mastergradsoppgave; Master thesis, 2024-05-12)For peer-to-peer collaborative editing systems utilizing the Conflict-free Replicated Data Type memory consumption can become a significant issue, particularly when handling large files with extensive editing histories. It can lead to performance problems and hinder user productivity, especially in environments with limited resources. This thesis addresses the problem of excessive memory usage and ... -
Label Propagation in Machine Learning Systems: Providing End-to-End Traceability with Explainable Artificial Intelligence
(Mastergradsoppgave; Master thesis, 2024-05-15)Artificial Intelligence (AI) and the underlying Machine Learning (ML) technology is experiencing increased applications in various areas. The training of ML models requires significant amounts of data, and data might contain restrictions regarding their permitted usage. High-performant models are often called black-boxes because of their complex decision-making process. Thus, ML applications threaten ... -
Bootstrapping the Integrity of Sensor Data Labels at the Microcontroller Level Using Physically Unclonable Functions: Addressing Physical Vulnerabilities in the IoT Domain
(Mastergradsoppgave; Master thesis, 2024-05-15)Modern decision-making processes across industries today increasingly rely on data-driven insights derived from various sources. As smart devices, sensor tech- nology, and the IoT (Internet of Things) evolve, organizations are progressively leveraging these technologies for data-driven decision-making. However, with the introduction of regulations such as the General Data Protection Regulation (GDPR) ... -
Training and Model Parameters to Defend against Tabular Leakage Attacks
(Mastergradsoppgave; Master thesis, 2024-05-15)Federated Learning (FL) is a privacy-preserving approach to train machine learning models on distributed datasets across different organizations. This is particularly beneficial for domains like healthcare and finance, where user data is often sensitive and tabular (e.g., hospital records and financial transactions). However, recent research like Tableak highlighted vulnerabilities that can exploit ... -
Configuring edge device provenance through messaging middleware
(Master thesis; Mastergradsoppgave, 2024-05-15)Integrity of data is important in today as more of societies structure today are distributed and becomes vulnerable to dishonest entities on their edge devices. Using provenance to prove integrity over edge devices and distributed networks is difficult, as it often produces big amounts of data which fills up storage without having a need to be used. Comm2Prov seeks to fix this by combining the ... -
Snowdrift Analysis using FlowCapt FC4 and LiDAR Data at Fv. 53 Tyin-Årdal
(Mastergradsoppgave; Master thesis, 2024-05-15)The wind is essential in distribution of snow and the degree of avalanche danger. There are a lot of uncertainties regarding quantification of wind-transported snow, which is of importance for local avalanche warning and Remote Avalanche Control Systems (RACS) - which is conducted by Skred AS along Fv. 53 (County Road 53) Tyin-Årdal. A snowdrift sensor, FlowCapt 4 (FC4), is installed along this ... -
Characteristics and failure mechanisms of the Sieidi unstable rock slope
(Mastergradsoppgave; Master thesis, 2024-05-14)Seidi is an unstable rock slope at the western end of the Sørfjord in Tromsø municipality, Troms County, northern Norway. It displays clear signs of rock slope deformation: an offset at the crest, multiple scarps, talus and loose material and a bulging slope. The objective of this work is to interrogate the failure mechanics in order to determine the degree of control lithology and bedrock structure ... -
Improving Blood Glucose Prediction for People with T1DM During Physical Activity Using Machine Learning on Participant Collected Data
(Mastergradsoppgave; Master thesis, 2024-05-14)For people with Type 1 Diabetes Mellitus (T1DM), engaging in physical activities (PA) presents unique challenges. The aim of this thesis was to improve the prediction of blood glucose (BG) levels for individuals with T1DM during and after PA. The study began with a literature review to guide the research direction and understand existing prediction models. Then particular emphasis was placed on ... -
Guorrat - The Research and Development of a Real-Time System for Generation of Ball Positions in Football
(Mastergradsoppgave; Master thesis, 2024-05-22)In contemporary football, advanced analysis techniques are increasingly important, enhancing clubs’ capabilities to make strategic in-game adjustments. Central to this advancement is the availability of real-time analytics, which relies heavily on accurate player and ball tracking technologies. While real-time player tracking has become more accessible, automatic and reliable real-time ball ... -
Enhancing Investigative Journalism: Leveraging Large Language Models and Vector Databases
(Mastergradsoppgave; Master thesis, 2024-05-15)The advancement in the field of Artificial Intelligence (AI) has brought revolution in almost every field of life, and Journalism is also one of them. Which includes prospective use in Investigating reports and uncovering information. This project explores the avenue of integrating technologies such as Large Language Model (LLM) with the Vector Databases. At the same time, the motive is to address ... -
“There's an art to it” - Exploring Sami Health Culture and Empowering Communication through an E-health Application
(Mastergradsoppgave; Master thesis, 2024-05-15)Studies have shown that the Sami culture of communicating about health can often be indirect and reliant on implications and hints rather than clear unambiguous statements. The style is described as “roundabout”, circling around a topic before closing in on it. Modern medicine typically values directness and unambiguousness in its mission of effective anamnesis and diagnosis. Due to these differing ... -
Sadji - Real-Time Soccer Player Localization and Tracking
(Mastergradsoppgave; Master thesis, 2024-05-15)Advanced analysis tools leveraging invasive tracking technologies such as gps and manual event tagging has become a global staple in top-tier soccer clubs for enhancing their strategical decision making and insight. These tools rely on precise coordinate data, with their effectiveness significantly enhanced when this data is produced in real-time. With the rapid advancement in computer vision and ... -
The Role of Clouds in Arctic Climate
(Mastergradsoppgave; Master thesis, 2024-05-14)Anthropogenic climate change is causing the Arctic to warm faster than any other region on Earth, a phenomenon also known as Arctic amplification. The warming and its consequences induce, amongst other things, a change in clouds, impacting their role in the Arctic climate by introducing a feedback. Clouds play an important role in the global radiation budget. They cool the surface by reflecting ... -
A distinctive rare earth element signature for pyrite oxidation and glacial weathering
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-05-15)The application of rare earth elements (REE) and neodymium (Nd) isotopes to authigenic Fe-(oxyhydr)oxide phases leached from marine sediments can be used for reconstructing past ocean circulation and chemical weathering patterns on nearby continental landmasses. To explore the behaviour of REE during chemical weathering in glacial environments, we analyzed the authigenic fraction of glacimarine ... -
Towards seamless environmental prediction–development of Pan-Eurasian EXperiment (PEEX) modelling platform
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-04-09)The Pan-Eurasian Experiment Modelling Platform (PEEX-MP) is one of the key blocks of the PEEX Research Programme. The PEEX MP has more than 30 models and is directed towards seamless environmental prediction. The main focus area is the Arctic-boreal regions and China. The models used in PEEX-MP cover several main components of the Earth’s system, such as the atmosphere, hydrosphere, pedosphere and ... -
Dating and analysis of the Hinlopen Megaslide, northern Svalbard
(Mastergradsoppgave; Master thesis, 2024-05-15)During a research cruise in the summer of 2022, a number of sediment cores were collected from the main headwall scar area of the Hinlopen Megaslide, northern Svalbard. In this study two of those sediment cores have undergone 14C AMS radiocarbon dating and a multi-proxy analysis to determine an accurate age for the slide deposits in this location. The results have been calibrated using the ... -
Marine- and Lacustrine Deposition of Eskers
(Mastergradsoppgave; Master thesis, 2024-05-16)The future stability of modern marine-terminating ice sheets is of great concern as an increased rate of retreat might mark the onset of their collapse. An increased rate of retreat is accompanied by an increase in meltwater and sediment discharge at the ice margin which has prompted research to focus on the drainage system of marine-terminating ice sheets. Recent discoveries of eskers at water-terminating ... -
A sedimentary insight into the coastal and environmental evolution of Hollendarbukta, Isfjorden: Early Holocene to present
(Mastergradsoppgave; Master thesis, 2024-05-13)Dramatic physical and biological shifts are occurring in the Arctic in response to rising surface air temperatures. Sedimentary coastal environments are particularly sensitive to these changes as they form at the interface between the terrestrial and shallow marine realm. The need to investigate sedimentary archives from coastal environments is crucial, to understand how they have responded during ... -
Contrasting Methane Seepage Dynamics in the Hola Trough Offshore Norway: Insights From Two Different Summers
(Journal article; Tidsskriftartikkel; Peer reviewed, 2024-07-09)This study investigates the temporal variations in methane concentration and flare activity in the Hola trough (offshore Norway) during May 2018 and June 2022. Between these time periods, methane seep activity exhibits 3.5 times increase, as evidenced by hydroacoustic measurements. As the seep area in the Hola trough is constantly within the hydrate stability zone, the observed increase cannot be ...
