Faculty of Science and Technology: Recent submissions
Now showing items 341-360 of 7322
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The Weighted Kalman Filter
(Peer reviewed; Journal article, 2023)This paper proposes a new version of the Kalman filter, referred to as weighted Kalman filter (WKF). In the WKF some recent results on the weighted linearization of nonlinear systems are exploited to incorporate modifications ... -
Impact of extent of resection on outcome from glioblastoma using the RANO resect group classification system: a retrospective, population-based cohort study
(Peer reviewed; Journal article, 2023)Background Extent of resection (EOR) is associated with survival in glioblastoma. A standardized classification for EOR was lacking until a system was recently proposed by the response assessment in neuro-oncology (RANO) ... -
Ostwald ripening of trapped gas bubbles in porous media : A pore-scale perspective
(PhD thesis UiS;747, Doctoral thesis, 2024)Ostwald ripening of gas bubbles is a thermodynamic process for mass transfer, which is significant for both foam-enhanced oil recovery and underground gas storage. During recovery, it can impact the macroscopic efficiency. ... -
The influences of international standards on structural performance and fracture behavior of 3D printed long fiber composite structures
(Peer reviewed; Journal article, 2023)The material properties of the additive manufactured composite structures are usually done following international standards, that show some difference dimensionally. This study focuses on the impact-induced on the tensile ... -
Automatic analysis of X (Twitter) data for supporting depression diagnosis
(Peer reviewed; Journal article, 2023-12)Depression is an increasingly common problem that often goes undiagnosed. The aim of this paper was to determine whether an analysis of tweets can serve as a proxy for assessing depression levels in the society. The work ... -
Learning within the fire and rescue services – addressing fire and rescue personnel’s competence in tunnel fire safety
(PhD thesis UiS;, Doctoral thesis, 2024)Tunnels are a key element of the Norwegian road transport infrastructure. The road tunnel system consists of more than 1200 tunnels with a large variety of safety designs and standards. While many of the Norwegian tunnels ... -
Exploring Pathogenicity in Blastocystis ST7 and ST4: A comparative analysis of virulence factors from known intestinal parasites for pathogenicity assessment in Blastocystis spp.
(Master thesis, 2023)Blastocystis, a unicellular parasite found in the human gastrointestinal tract, has been a topic of study due to its potential pathogenicity. This study identified potential virulence factors within Blastocystis subtypes ... -
Analysere hvordan den norske regjeringen kommuniserer risiko og usikkerhet i forbindelse med kunstig intelligens (AI)
(Master thesis, 2024)ABSTRACT This thesis examines the Norwegian Government's AI communication strategy, focusing on improving risk communication. It explores AI's influence on societal perceptions and Norway's technological advancements. The ... -
Statistical Modeling and Applications of Joint Distributions for Significant Wave Height, Spectral Peak Period, and Peak Direction of Propagation: A Case Study in the Norwegian Sea
(Peer reviewed; Journal article, 2023)The estimation of long-term extreme response is a crucial task in the design of marine structures. The target extreme responses are typically defined by annual exceedance probabilities of 10-2 and 10-4. Various approaches ... -
Metocean conditions at two Norwegian sites for development of offshore wind farms
(Peer reviewed; Journal article, 2024)This paper examines metocean data from NORA3, a state-of-the-art wind and wave hindcast dataset for Northern Europe. Two offshore Norwegian areas, Utsira Nord (UN) and Sørlige Nordsjø II (SN2), are investigated. Both areas ... -
An approach for optimization of controllable drilling parameters for motorized bottom hole assembly in a specific formation
(Peer reviewed; Journal article, 2023)This study focuses on optimizing drilling parameters when using Positive Displacement Motors (PDMs). In drilling operations involving mud motors, weight-on-bit (WOB) alterations lead to variations in the system's parasitic ... -
The challenges experts face during creeping crises: the curse of complacency
(Peer reviewed; Journal article, 2024)The policy literature has generally conceptualised crises as urgent public threats with clearly demarcated ‘focusing events’. Consequently, most studies have identified the main challenges faced by expert agencies involved ... -
New tests for trend in time censored recurrent event data
(Peer reviewed; Journal article, 2024)We consider testing for trend in recurrent event data. More precisely, for such data we consider testing of the null hypothesis of data coming from a renewal process. The new tests are essentially obtained by considering ... -
Challenges associated with mercury occurrence on the Norwegian Continental Shelf
(Master thesis, 2023)The thesis includes a review of the heavy metal mercury, with focus on its origin, effect on the environment, and its role in the petroleum industry. Mercury emissions from the petroleum industry in Norway is looked into ... -
Pulsar timing array stochastic background from light Kaluza-Klein resonances
(Peer reviewed; Journal article, 2023-11)We investigate the potential of the warped extradimension framework as an explanation for the recently observed stochastic gravitational background at nHz frequencies in pulsar timing arrays (PTA). Our analysis reveals ... -
Transitioning towards renewable energy and sustainable storage solutions at remote communities in the Arctic, Case study of Flatey, Iceland
(Peer reviewed; Journal article, 2023)The need for transitioning towards renwable energy and sustainable storage solutions is particularly challenging for remote communities in the Arctic, located far away from the electricity grid. This paper explores the ... -
Geothermal gradient from well log data in the Froan and Gimsan basins, Norwegian Sea
(Bachelor thesis, 2023)This thesis reconstructs geothermal gradients in the Froan and Gimsan basins of the Norwegian Sea, utilizing well log data to derive a more accurate representation of the thermal regime of these basins. The study challenges ... -
Additive manufacturing best practices and its impact on supply chain performance through structural equation modelling: A case study in Ethiopian footwear industry
(Peer reviewed; Journal article, 2023)The aim of this study is to analyze the effects of additive manufacturing (AM) best practices on supply chain (SC) performance. The study developed conceptual framework with four AM best practice as independent variables ... -
New tests for trend in time censored recurrent event data
(Peer reviewed; Journal article, 2024-01)We consider testing for trend in recurrent event data. More precisely, for such data we consider testing of the null hypothesis of data coming from a renewal process. The new tests are essentially obtained by considering ... -
Breaking Scaling Relations for Highly Efficient Electroreduction of CO2 to CO on Atomically Dispersed Heteronuclear Dual-Atom Catalyst
(Peer reviewed; Journal article, 2023)Conversion of CO2 into value-added products by electrocatalysis provides a promising way to mitigate energy and environmental problems. However, it is greatly limited by the scaling relationship between the adsorption ...