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Challenges of SiC MOSFET Power Cycling Methodology
(Chapter, 2018)This paper investigates the power cycling methodology for reliability testing of SiC metal-oxide-semiconductor field-effect transistors (MOSFETs). Dedicated test benches were designed and built to study this issue. The ... -
Challenges of Sustainable Urban Mobility Integration
(Chapter, 2020)This position paper addresses the field of cities, mobility, and climate change. We claim that the challenge is no longer just only individual interfaces for individual cars or mobility providers, but rather an overhaul ... -
Challenges of the Facilities Management and Effects on Indoor Air Quality. Case Study “Smelly Buildings” in Belgrade, Serbia
(Peer reviewed; Journal article, 2021)One of the key objectives and challenges nowadays is to live in safe and healthy cities. Accordingly, maintaining good air quality is one of the preconditions for achieving this goal, which is not a simple task given the ... -
Challenges of the future Danish energy scenario with 50 % wind integration and how electric vehicles adaptive charging can help to mitigate.
(Master thesis, 2015)Denmark aims for a 50% wind integration in 2020. In the current scenario, where wind represents around 34% of domestic consumption, mothballing of conventional power plants and heavy dependency in interconnection lines is ... -
Challenges of the Use of Sound Emergence for Setting Legal Noise Limits
(Journal article; Peer reviewed, 2019)In the vast majority of legislation on environmental noise, the metric used for expressing limit values is based on sound pressure levels. But some countries have introduced sound emergence limit values where the compliance ... -
Challenges of Tunnelling in the Capital Area of Iceland - Engineering Geological Evaluation of a Tunnel for a Proposed Fast Train Between Reykjavík and Keflavík
(Master thesis, 2018)As part of a possible railway connection from Reykjavík to the airport in Keflavík, an approximately 15 km long, single track tunnel, between Vatnsmýri and Straumsvík has been proposed. If built, this will be the first ... -
Challenges on drive circuit design for series-connected SiC power transistors
(Journal article; Peer reviewed, 2017)The breakdown voltages of the currently available 1.2 and 1.7-kV classes Silicon Carbide (SiC) transistors are not sufficient to operate under medium blocking voltages. On the other hand, the fabrication yields of the ... -
Challenges on Implementing Agile Project Management Methods: An Literature Review and Interview Study with Practitioners
(Master thesis, 2010)Indicated by Geoffrey Moore's Technology Adoption Curve, agile is supposed to face different challenges in different phases facing different user groups. Despite the popularity of agile implementation, the trends of agile ... -
Challenges Posed by Electron Correlation in Wave-Function Methods within Non-Relativistic Molecular Electronic Structure Theory
(Bachelor thesis, 2022)Utfordringer ved å beskrive elektronbevegelse i fler-elektron systemer under Born-Oppenheimer approksimasjonen innen ikke-relativistisk elektronstruktur teori illustreres ved ved diskusjon av utvalgte bølgefunkjonmetoder. ... -
Challenges Related to Analysis of Anions in Degraded Samples from Pilot and Lab Experiments
(Journal article; Peer reviewed, 2016)Analyses of degraded samples from CO2 capture experiments and pilots are complicated because of the diversity of the degradation compounds and the high amine and CO2 contents in the samples. Little work has been conducted ... -
Challenges related to structural modelling and assessment of concrete structures affected by alkali-silica reactions
(Chapter, 2017)Alkali-Silica Reaction (ASR) in concrete is a chemical process between dissolved alkali and hydroxyl ions from pore solutions in the cement paste, and reactive (amorphous) silica within the aggregates. The product of the ... -
Challenges to Refugees' Freedom of Movement in Uganda: A Case of Self-Settled Refugees in Kisenyi, Kampala
(Master thesis, 2011)The thesis discusses the challenges to refugees’ freedom of movement in Uganda. The main objective of this study was to explore the factors confronted by refugees in a bid to exercise their relative freedom of movement in ... -
Challenges to Sustainable Development - An Investigation of Sustainable Practices in Small-Scale Business and Local Government in England
(Master thesis, 2018)Humanity s ever increasing consumptive practices can no longer be sustained in the manner it has become accustomed to without resulting in severe repercussions. Decades of multidisciplinary research has produced extensive ... -
Challenges when creating a cohesive digital twin ship: a data modelling perspective
(Peer reviewed; Journal article, 2021)A digital twin is a digital asset that simulates the behaviours of a physical counterpart. Digital twin ship literature identifies that the concept is already being applied to specialised problems, but no clear guide exists ... -
Challenges with benchmarking of MDMA-assisted psychotherapy
(Peer reviewed; Journal article, 2021)To represent a treatment breakthrough, 3,4-methylenedioxymethamphetamine (MDMA)-assisted psychotherapy for post-traumatic stress disorder (PTSD) should be evaluated against first-line psychological interventions or for ... -
Challenges with bringing collision risk models used in the north sea and norwegian sea to the Barents Sea
(Journal article; Peer reviewed, 2015)Norwegian offshore oil and gas exploration and production is moving into new and previously unexplored areas further north, such as the Barents Sea. This poses multiple new challenges in design, development and operation. ... -
Challenges with data for human reliability analysis
(Chapter, 2018)A lack of empirical data is often been presented as a large challenge for HRA, which begs the question: why is this so difficult? HRA methods were not developed as objective quantitative test methods, but more as qualitative ... -
Challenges with onboard strain measurements on a model Francis turbine runner
(Peer reviewed; Journal article, 2023)As the world transitions towards more renewable energy sources, as a step to reduce the emissions of CO2, intermittent and non-dispatchable sources like solar and wind will take up a larger proportion of the energy production. ... -
Challenges with sea ice action on structures for Offshore wind
(Peer reviewed; Journal article, 2023)EU urgently needs to increase the development of secure and green energy, and this includes renewables such as Offshore wind energy. An expansion of Offshore wind will include the Baltic where sea ice is one of the major ... -
Challenges with the calibration of building energy simulation models
(Master thesis, 2013)In order to correctly understand and predict the energy use of a building, simulation tools is often utilized in the industry. These simulation tools can predict the estimated energy use in buildings using inserted parameters; ...