Faculty of Science and Technology: Recent submissions
Now showing items 461-480 of 7322
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Potential Assessment and Economic Analysis of Concentrated Solar Power against Solar Photovoltaic Technology
(Peer reviewed; Journal article, 2023)Competition between concentrated solar power and solar photovoltaic has been the subject of frequent debate in recent years based on their cost of fabrication, efficiency, storage, levelized cost of energy, reliability, ... -
Nanoparticles for Oil Well Drilling Fluids and Cement
(PhD Theses;738, Doctoral thesis, 2024)Drilling fluids and oil well cement are essential elements of the drilling process and well construction. Drilling fluids play a crucial role in the drilling process, ensuring the safety and efficiency of well construction. ... -
Log-density gradient covariance and automatic metric tensors for Riemann manifold Monte Carlo methods
(Peer reviewed; Journal article, 2023)A metric tensor for Riemann manifold Monte Carlo particularly suited for nonlinear Bayesian hierarchical models is proposed. The metric tensor is built from symmetric positive semidefinite log-density gradient covariance ... -
Analysis of Wired Drill Pipe Data and Cuttings Transport
(Master thesis, 2023)The prime objective of all oil and gas companies are to conduct various activities in a safe and cost-efficient manner, while also paying attention to the long-term integrity of the wells. To overcome challenges with reduced ... -
Literature review on thin-walled and cellular structure designs for energy absorption
(Peer reviewed; Journal article, 2023)Bio-inspired structure is a topic of immense interest to researchers worldwide. In order to maximize energy absorption through biomimetic structures, this article presents bio-inspired structure particularly, thin walled ... -
Exploring digital narratives: A comprehensive Dataset of Household Energy App reviews
(Peer reviewed; Journal article, 2023-12)This paper presents an anonymous dataset of 7999 user reviews covering five household energy mobile applications used in Norwegian households. Such reviews are usually available through the Google Play Store and Apple App ... -
Preparing for the Future: An Analysis of Norwegian Customs Intelligence Workers’ Perspectives on Intelligence
(Master thesis, 2023)This study delved into the relationship between risk management and the intelligence operation within the Norwegian Customs, the role of intelligence in border controls, and explores perceptions of intelligence workers ... -
A Heterotic Kodaira--Spencer Theory at One-Loop
(Peer reviewed; Journal article, 2023-10)We consider a heterotic version of six-dimensional Kodaira-Spencer gravity derived from the heterotic superpotential. We compute the one-loop partition function and find it can be expressed as a product of holomorphic ... -
Understanding the implications of low knowledge and high uncertainty in risk studies
(Peer reviewed; Journal article, 2023-11)Risk analysis has existed for thousands of years and will continue to grow in importance across professions and industries. Of special importance is the need to understand and manage risk when there is low knowledge and ... -
Review of Different Methods for Identification of Transients in Pressure Measurements by Permanent Downhole Gauges Installed in Wells
(Peer reviewed; Journal article, 2023)Permanent downhole gauges (PDG) are massively installed in injection and production wells operated in different industries such as oil and gas, geological CO2 storage, and the geothermal industry. These gauges provide a ... -
Impact of and solutions to effects of climate changes for Longyearbyen, Svalbard, Norway
(Peer reviewed; Journal article, 2023)Climate changes forces us to make significant mitigation and adaptation measures. As temperature rises and the environmental conditions changes, a variety of challenges occur. Across the whole globe, harming consequences ... -
Availability of fresh water in cold climate regions
(Peer reviewed; Journal article, 2023)Challenges related to the availability of fresh water in cold climate regions are discussed with emphasis on possible degradation of the quality of drinking water. The permafrost in this region has been consistent in making ... -
The multifunctionality concept in urban green infrastructure planning: A systematic literature review
(Peer reviewed; Journal article, 2023-07)Urban green infrastructure is critical for providing a wide range of ecosystem goods and services that benefit the urban population. Past studies have suggested that multifunctionality concerning urban infrastructure ... -
Floating wind turbines structural details fatigue life assessment
(Peer reviewed; Journal article, 2023)Fatigue damage prediction is essential for safety of contemporary offshore energy industrial projects, like offshore wind turbines, that are to be designed for sufficiently long operational period of time, with minimal ... -
Dynamic analysis and validation of a multi-body floating wind turbine using the moving frame method
(Peer reviewed; Journal article, 2023)This research applies the moving frame method (MFM) to the multi-body dynamic analysis of an OC3 phase IV spar buoy with the NREL 5MW turbine. Further, it verifies previous results obtained through numerical comparisons ... -
The Application of an Artificial Neural Network as a Baseline Model for Condition Monitoring of Innovative Humidified Micro Gas Turbine Cycles
(Peer reviewed; Journal article, 2023)Due to high penetration of renewables, the EU energy system is undergoing a transition from large-scale centralized generation toward small-scale distributed generation. The increasing share of intermittent renewables such ... -
Automated Drill Plan Using Reinforcement Machine Learning
(Master thesis, 2023) -
Physics-Based Swab and Surge Simulations and the Machine Learning Modeling of Field Telemetry Swab Datasets
(Peer reviewed; Journal article, 2023)Drilling operations are the major cost factor for the oil industry. Appropriately designed operations are essential for successful drilling. Optimized drilling operations also enhance drilling performance and reduce drilling ... -
Resource allocation for cost minimization of a slice broker in a 5G-MEC scenario
(Peer reviewed; Journal article, 2023-11)The fifth generation (5G) of mobile networks may offer a custom logical and virtualized network called network slicing. This virtualization opens a new opportunity to share infrastructure resources and encourage cooperation ... -
New Simple Analytical Surge/Swab Pressure Model for Power-Law and Modified Yield-Power-Law Fluid in Concentric/Eccentric Geometry
(Peer reviewed; Journal article, 2023)The axial movement of pipe in and out of the well generates positive (surge) and negative (swab) pressures that will impact the well pressure. When the swab and surge effects cause well pressures outside the allowable ...