Blar i PhD theses in Engineering and Sciences på tittel
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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, ... -
The micro-culture of a mathematics classroom : Artefacts and Activity in Meaning making and Problem solving
(Doctoral dissertations at University of Agder;, Doctoral thesis, 2006) -
Theoretical Studies in Solar Cell Physics
(Doctoral Dissertations at the University of Agder; no. 390, Doctoral thesis, 2022)In this thesis, we develop analytical models with the purpose of expanding knowledge and gaining understanding of some of the internal mechanisms that limit the efficiency of single-junction solar cells. We focus on three ... -
Towards Thompson Sampling for Complex Bayesian Reasoning
(Doctoral Dissertation at the University of Agder; no. 275, Doctoral thesis, 2020)Thompson Sampling (TS) is a state-of-art algorithm for bandit problems set in a Bayesian framework. Both the theoretical foundation and the empirical efficiency of TS is wellexplored for plain bandit problems. However, the ... -
Uncertainty analysis of 100-year flood maps under climate change scenarios
(Doctoral Dissertations at the University of Agder; no. 392, Doctoral thesis, 2022)Floods are natural disastrous hazards that throughout history have had and still have major adverse impacts on people’s life, economy, and the environment. One of the useful tools for flood management are flood maps, which ... -
Undergraduate students’ performance in mathematics : Individual and combined effects of approaches to learning, self-efficacy, and prior mathematics knowledge
(Doctoral Dissertations at the University of Agder; no. 312, Doctoral thesis, 2021)This dissertation concerns an exploration of factors that affect the learning outcomes of students in higher education mathematics. It is framed within a quantitative research paradigm in which the existence of personal ... -
Using Digital Hydraulics in Secondary Control of Motor Drive
(Doctoral Dissertations at the University of Agder; no. 265, Doctoral thesis, 2020-04-08)Due to the increased focus on pollution and global warming, there is a demand for energy efficient systems. This also applies to the offshore oil and gas industry. Normally used hydraulic systems tend to suffer from low ...