Faculty of Engineering and Science: Recent submissions
Now showing items 661-680 of 3383
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Diversification and community assembly of the world’s largest tropical island
(Peer reviewed; Journal article, 2022)Aim: The species diversity and endemism of tropical biotas are major contributors to global biodiversity, but the factors underlying the formation of these systems remain poorly understood. Location: The world's largest ... -
Analysis of spar and semi-submersible floating wind concepts with respect to human exposure to motion during maintenance operations
(Peer reviewed; Journal article, 2022)Floating offshore wind turbines (FOWTs) are expected to experience onsite maintenances and inspections during their lifetimes. To carry out offshore maintenance activities, a crew will be transferred to an FOWT and spend ... -
Condition classification of fibre ropes during cyclic bend over sheave testing using machine learning
(Peer reviewed; Journal article, 2022)Fibre ropes have been shown to be a viable alternative to steel wire rope for offshore lifting operations. Visual inspection remains a common method of fibre rope condition monitoring and has the potential to be further ... -
Simple Lossless Inductive Snubbers-Assisted Series Load Resonant Inverter Operating under ZCS-PDM Scheme for High-Frequency Induction Heating Fixed Roller
(Peer reviewed; Journal article, 2022)This paper presents a high-frequency pulse-density-modulated (PDM) soft-switching series load resonant inverter for use in induction heating (IH) fixed roller applications, which is used in copy and printing machines. The ... -
A Review of the Digital Twin Technology in the AEC-FM Industry
(Peer reviewed; Journal article, 2022)The Architecture, Engineering, Construction, and Facility Management (AEC-FM) industry is increasingly affected by digital technologies that monitor sensor network data and control automation systems. Advances in digital ... -
THE USE of AGGLOMERAtion AND BINDERS For BIOCHAR, SPREADIng IN AGRICULTURE
(Master thesis, 2022) -
Reuse of Water and Nutrients in Soilless Plant Culture
(Doctoral Dissertations at the University of Agder; no. 403, Doctoral thesis, 2023)This dissertation proposes two approaches to mitigating the dependency of soilless culture on scarce mineral fertilisers. The first approach aims to increase the lifetime of the NS used in recirculating hydroponic systems, ... -
Community Segmentation and Inclusive Social Media Listening
(Peer reviewed; Journal article, 2022)Social media analytics provide a generalized picture of situational awareness from the conversations happening among communities present in social media channels that are that are, or risk being affected by crises. The ... -
Evaluating Anomaly Detection Algorithms through different Grid scenarios using k-Nearest Neighbor, iforest and Local Outlier Factor
(Chapter; Peer reviewed, 2022)Detection of anomalies based on smart meter data is crucial to identify potential risks and unusual events at an early stage. The available advanced information and communicating platform and computational capability renders ... -
Balancing Profit, Risk, and Sustainability for Portfolio Management
(Chapter; Peer reviewed, 2022)Stock portfolio optimization is the process of continuous reallocation of funds to a selection of stocks. This is a particularly well-suited problem for reinforcement learning, as daily rewards are compounding and objective ... -
An Exploration of Semi-supervised Text Classification
(Communications in Computer and Information Science;1600, Chapter; Peer reviewed, 2022)Good performance in supervised text classification is usually obtained with the use of large amounts of labeled training data. However, obtaining labeled data is often expensive and time-consuming. To overcome these ... -
Preparation and Characterization of Spherical Nickel Silicide Powder by Inductively Coupled Plasma Spheroidization for Additive Manufacturing
(The Minerals, Metals & Materials Series;, Chapter; Peer reviewed, 2022)Metal alloy powder with spherical-shaped morphology, high flowability, and packing density is the main requirements for metal-based additive manufacturing (AM). Among metal alloys, nickel silicide is considered as a potential ... -
Towards Using Reinforcement Learning for Autonomous Docking of Unmanned Surface Vehicles
(Communications in Computer and Information Science;1600, Chapter; Peer reviewed, 2022)Providing full autonomy to Unmanned Surface Vehicles (USV) is a challenging goal to achieve. Autonomous docking is a subtask that is particularly difficult. The vessel has to distinguish between obstacles and the dock, and ... -
How are proof and proving conceptualized in mathematics curriculum documents in the USA and Japan?
(Chapter; Peer reviewed, 2022)Only a few international comparative studies have reported on proof and proving in curriculum documents. This report proposes a method of comparing the meaning of proof-related words in two specific countries’ curriculum ... -
AI/Human Augmentation: A Study on Chatbot – Human Agent Handovers
(IFIP Advances in Information and Communication Technology;660, Chapter; Peer reviewed, 2022)The combination of chatbots with live chats supported by human agents creates a new type of man-machine coordination problem. Prior research on chatbot interactions has focused mostly on the interaction between end users ... -
Attitude Control of a 2-DOF Helicopter System with Input Quantization and Delay
(Journal article; Peer reviewed, 2022)In this paper the attitude tracking control problem of a 2 degrees-of-freedom helicopter system with network induced constraints is studied. A predictor feedback control law is developed to compensate a known delay in the ... -
ANN modelling of CO2 refrigerant cooling system COP in a smart warehouse
(Peer reviewed; Journal article, 2020)Industrial cooling systems consume large quantities of energy with highly variable power demand. To reduce environmental impact and overall energy consumption, and to stabilize the power requirements, it is recommended to ... -
On abstraction in the OMG hierarchy: systems, models, and descriptions
(Chapter; Peer reviewed, 2022)The Model-Driven Architecture (MDA) uses a metadata hierarchy with several layers that are placed on top of each other. The traditional view is that the layers provide abstractions related to models in languages defined ... -
LCA-analyse av en ny, glassbasert vann- og frostsikringsløsning i tunnel
(Master thesis, 2023)This master thesis addresses some opportunities of reducing the environmental impacts when planning and construction of a road tunnel. It includes a LCA for two different approaches of tunnel lining; a new solution of ... -
Robust Interpretable Text Classification against Spurious Correlations Using AND-rules with Negation
(IJCAI International Joint Conference on Artificial Intelligence, Peer reviewed; Conference object, 2022)The state-of-the-art natural language processing models have raised the bar for excellent performance on a variety of tasks in recent years. However, concerns are rising over their primitive sensitivity to distribution ...