Browsing PhD theses in Engineering and Sciences by Title
Now showing items 98-117 of 124
-
Security Mechanisms in Unattended Wireless Sensor Networks
(Doctoral Dissertation by the University of Agder;39, Doctoral thesis; Peer reviewed, 2011)Wireless Sensor Networks (WSNs) consisting of a large number of sensor nodes are being deployed in potentially hostile environments for applications such as forest fire detection, battlefield surveillance, habitat ... -
A service based approach for future internet architectures
(Doctoral dissertations at the University of Agder;28, Doctoral thesis; Peer reviewed, 2010) -
Smart Sensing and Communications for UAVs/Drones
(Doctoral dissertations at University of Agder; no 485, Doctoral thesis, 2024)Reliable sensing and energy-efficient communication are an integral part of unmanned aerial vehicle (UAV)-based applications. However, it is challenging to ensure reliable sensing under all weather conditions. Furthermore, ... -
Solar cell degradation : the role of moisture ingress
(Doctoral Dissertations at the University of Agder; no. 420, Doctoral thesis, 2023)Moisture ingress is one of the key fault mechanisms responsible for photovoltaic (PV) devices degradation. Moisture and moisture induced degradation (MID) products can attack the solar cell and the PV module components ... -
Spectrum Surveying for Machine Learning-Assisted UAV Communications
(Doctoral dissertations at University of Agder; no. 488, Doctoral thesis, 2024)The use of unmanned aerial vehicles (UAVs) has become widespread, spanning applications from surveillance to wireless communications infrastructure. Remarkably, it has been proposed that UAVs can be utilized as aerial base ... -
Spin Dynamics in Antiferromagnetic Systems
(Doctoral dissertations at University of Agder;no. 521, Doctoral thesis, 2025)This dissertation presents three research papers on spintronics-related effects. Two of the papers discuss dynamic spin phenomena in noncollinear antiferromagnets (NCAFMs). The third paper investigates the equilibrium ... -
Statistical analysis of the capacity of mobile radio channels
(Doctoral dissertations at the University of Agder;29, Doctoral thesis; Peer reviewed, 2011) -
Student meaning making in elementary algebra teaching : An in-depth study of classrooms in four countries
(Doctoral dissertations at the University of Agder; no. 258, Doctoral thesis, 2020)The research presented in this thesis is based on observations and analyses of classroom data from four countries. The data were collected through a collaboration of local research teams in Finland, Norway, Sweden and the ... -
Students’ perceptions of the relevance of mathematics in an Ethiopian preparatory school : Doctoral Dissertation at the University of Agder
(Doctoral dissertations at University of Agder, Doctoral thesis, 2019) -
Studying pupils’ mathematical thinking through problem solving and view of mathematics : Case studies of Finnish comprehensive school pupils
(Doctoral dissertations at University of Agder, Doctoral thesis, 2018) -
Supporting Effective Online Learning Groups for eLearning Systems
(Doctoral Dissertations at the University of Agder; no. 286, Doctoral thesis, 2020)Learning in groups has been advocated to increase learning based on the social constructivist learning theory. ICT has been preferred to bridge the gap between distance learning students for possibilities to enhance the ... -
Sustainable Approaches for Highway Runoff Management During Construction and Operation
(Doctoral Dissertations at the University of Agder; no. 365, Doctoral thesis, 2022)Environmentally friendly approaches for highway runoff management during construction and operation are considered in this project. First, the state of the art in runoff management in terms of characterization, treatment, ... -
Sustainable Approaches for Highway Runoff Management During Construction and Operation
(Doctoral dissertations at the University of Agder;365, Doctoral thesis, 2022) -
Synchronising Wisdom and Implementation: A Formal ODD Approach to Expressing Insights on Bullying
(Doctoral Dissertations at the University of Agder;no. 441, Doctoral thesis, 2023)The Social Simulation methodology, a mix of traditionally unassociated fields, utilises computer models to describe, understand, predict, and reflect on social phenomena. The model creation process typically requires the ... -
Synthetic Esters in Hydraulic Valves
(Doctoral Dissertation at the University of Agder; no. 277, Doctoral thesis, 2020)Each year 35-37 million tons of lubrication is consumed. Hydraulic oils constitute 10.2% of the total lubrication consumption, and a large part of that is lost to leakage, hose burst and accidents. One way of reducing the ... -
Synthetic Micro-Doppler Signatures of Non-Stationary Channels for the Design of Human Activity Recognition Systems
(Doctoral Dissertations at the University of Agder; no. 333, Doctoral thesis, 2021)The main aim of this dissertation is to generate synthetic micro-Doppler signatures and TV-MDSs to train the HACs. This is achieved by developing non-stationary fixed-tofixed (F2F) indoor channel models. Such models provide ... -
Teachers' implementation and orchestration of Cabri-use in mathematics teaching
(Doctoral thesis, 2008)This thesis reports from a study of three teachers¿ first ever use of a particular computer software tool, Cabri, in teaching at two lower secondary schools in Norway. The thesis gives a characterisation of teachers¿ ... -
Teaching and learning for mathematical literacy
(Doctoral Dissertations at the University of Agder; no. 299, Doctoral thesis, 2020)This dissertation reports from research that investigates the nature of teaching and learning for mathematical literacy in three lower secondary schools in Norway. Mathematical literacy is a notion used to denote the ... -
Techno-Economic Performance Evaluation of Photovoltaic based Micro-Grid with Energy Management Strategies
(Doctoral Dissertations at the University of Agder; no. 313, Doctoral thesis, 2021)The operational performance of grid connected micro-grid system can be affected by many factors e.g. techno-economic sizing, appropriate energy management strategy, geographical locations, grid constrains and electricity ... -
Temperature coefficients and crystal defects in multicrystalline silicon solar cells
(Doctoral Dissertations at the University of Agder; no. 300, Doctoral thesis, 2020)The conversion efficiency of a photovoltaic device is strongly dependent on the operating temperature. For most devices, the efficiency, and hence the power production, decreases with increasing temperature due to fundamental, ...