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Decentralized wind power as part of the relief for an overstrained grid. A case study on Northern Senja, Norway
(Master thesis; Mastergradsoppgave, 2019-08-12)The most significant factor in wind turbine siting is the wind conditions. Those often determine the economic and ecologic success of a project. Especially in topographically complex areas micro siting can be difficult and costly. Small and medium scale projects often lack the knowledge and resources for an extended in situ assessment. A combination of modelled wind data and the use of a geographic ... -
Estimation of power supply by renewable energy sources to a weather station at Nordlysobservatoriet, Alta
(Master thesis; Mastergradsoppgave, 2019-08-05)For a weather station that will be set up at Halddetoppen, Alta, there will also be installed a hybrid renewable energy system, to supply the station with power. This thesis simulated and estimated the hybrid system as it was planned, to see if it would be enough to give steady supply for the weather station. Different set-ups for the hybrid system was investigated. The set-ups differed in mounting ... -
Segmentation and Unsupervised Adversarial Domain Adaptation Between Medical Imaging Modalities
(Master thesis; Mastergradsoppgave, 2019-07-13)Segmenting and labelling tumors in multimodal medical imaging are often vital parts of diagnostics and can in many cases be very labor intensive for clinicians. The effort in advancing time-saving methods in the medical health sector might be of great help for busy clinicians and can maybe even save lives. Furthermore, creating methods that generically, accurately and successfully process unlabelled ... -
Investigation of Photovoltaic Energy Yield on Tromsøya by Mapping Solar Potential in ArcGIS
(Master thesis; Mastergradsoppgave, 2019-06-13)To contribute to the reduction of greenhouse gas emissions, energy production from renewable energy resources should be markedly increased to supply the rising global energy demand (Marchant, 2018). This thesis investigates the solar energy potential in Tromsø which is used as a basis for estimating total energy yield from photovoltaic (PV) systems on rooftops. The energy yield is compared against ... -
Chronology of the Saxothuringian subduction in the West Sudetes (Bohemian Massif, Czech Republic and Poland)
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-11-22)Isotopic dating of monazite and garnet from high-pressure metamorphic rocks exposed in the northern part of the Saxothuringian palaeo-suture in the Bohemian Massif revealed a diachronous metamorphism of various rock types that are now closely associated within allochthonous units representing the Devonian–Carboniferous subduction–accretionary complex. Mafic blueschists of the middle unit yielded ... -
A High-Resolution Geomagnetic Relative Paleointensity Record From the Arctic Ocean Deep-Water Gateway Deposits During the Last 60 kyr
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-16)We present a paleomagnetic and rock magnetic data set from two long sediment cores collected from Bellsund and Isfjorden contourite drifts located on the eastern side of the Fram Strait (western Spitsbergen margin). The data set gave the opportunity to define the behavior of the past geomagnetic field at high latitude and to constrain the palaeoclimatic events that occurred in a time framework ... -
Wearable Sensors with Possibilities for Data Exchange: Analyzing Statusand Needs of Different Actors in Mobile Health Monitoring Systems
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-31)<i>Background</i> - Wearable devices with an ability to collect various type of physiological data are increasingly becoming seamlessly integrated into everyday life of people. In the area of electronic health (eHealth), many of these devices provide remote transfer of health data, as a result of the increasing need for ambulatory monitoring of patients. This has a potential to reduce the cost ... -
Two high-risk susceptibility loci at 6p25.3 and 14q32.13 for Waldenström macroglobulinemia
(Journal article; Tidsskriftartikkel; Peer reviewed, 2018-10-10)Waldenström macroglobulinemia (WM)/lymphoplasmacytic lymphoma (LPL) is a rare, chronic B-cell lymphoma with high heritability. We conduct a two-stage genome-wide association study of WM/LPL in 530 unrelated cases and 4362 controls of European ancestry and identify two high-risk loci associated with WM/LPL at 6p25.3 (rs116446171, near EXOC2 and IRF4; OR = 21.14, 95% CI: 14.40–31.03, P = 1.36 × 10<s ... -
Interpreting teaching for conceptual and for procedural knowledge in a teaching video about linear algebra
(Journal article; Tidsskriftartikkel, 2018)The aim of this study is to investigate teaching videos about mathematics, seeking to uncover research-based foundations for their quality. By drawing on the notions of procedural and conceptual knowledge, the research was operationalized by asking professionals in undergraduate mathematics education (n=18) to interpret sections of a teaching video. The video dealt with a topic in linear algebra. ... -
Influence of preservation methods, sample medium and sampling time on eDNA recovery in a neotropical river
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-05-31)Environmental DNA (eDNA) has rapidly emerged as a promising biodiversity monitoring technique, proving to be a sensitive and cost‐effective method for species detection. Despite the increasing popularity of eDNA, several questions regarding its limitations remain to be addressed. We investigated the effect of sampling medium and time, and preservation methods, on fish detection performance based on ... -
Investigating long-term human ecodynamics in the European Arctic: Towards an integrated multi-scalar analysis of early and mid Holocene cultural, environmental and palaeodemographic sequences in Finnmark County, Northern Norway
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-02-26)Most parts of the Circumpolar Arctic have only discontinuous evidence for long-term human settlement. In contrast, Northern Norway has an unbroken archaeological record that extends back to the early Holocene. Numerous high-resolution archaeological and palaeoenvironmental records have been generated by commercial excavations and surveys, offering archaeologists unique opportunities to investigate ... -
Acupuncture for the Treatment of Pain – A Mega-Placebo?
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-17)Several control conditions, such as penetrating sham acupuncture and non-penetrating placebo needles, have been used in clinical trials on acupuncture effects in chronic pain syndromes. All these control conditions are surprisingly effective with regard to their analgesic properties. These findings have fostered a discussion as to whether acupuncture is merely a placebo. Meta-analyses on the clinical ... -
Forfeiting the priority effect: turnover defines biofilm community succession
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-03-18)Microbial community succession is a fundamental process that affects underlying functions of almost all ecosystems; yet the roles and fates of the most abundant colonizers are often poorly understood. Does early abundance spur long term persistence? How do deterministic and stochastic processes influence the ecological contribution of colonizers? We performed a succession experiment within a hypersaline ... -
Toward valuable weather and sea-ice services for the marine Arctic: exploring user–producer interfaces of the Norwegian Meteorological Institute
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-10-30)Recognition is growing that valuable weather, water, ice and climate (WWIC) services for marine, Arctic environments can only be produced in close dialogue with its actual users. This denotes an acknowledgement that knowing how users incorporate WWIC information in their activities should be considered throughout the information value chain. Notions like co-production and user engagement are current ... -
Asymmetricity and sign reversal of secondary Bjerknes force from strong nonlinear coupling in cavitation bubble pairs
(Journal article; Tidsskriftartikkel; Peer reviewed, 2019-04-18)Most of the current applications of acoustic cavitation use bubble clusters that exhibit multibubble dynamics. This necessitates a complete understanding of the mutual nonlinear coupling between individual bubbles. In this study, strong nonlinear coupling is investigated in bubble pairs which is the simplest case of a bubble-cluster. This leads to the derivation of a more comprehensive set of coupled ... -
Microplastics; occurrence, levels and implications for environment and human health related to food. Opinion of the Steering Committee of the Norwegian Scientific Committee for Food and Environment
(Research report; Forskningsrapport, 2019-10-12)The steering committee of VKM has self-initiated a mandate for an opinion on microplastics based on recently published international and/or national reports complemented with literature from December 2016 to February 2019. The mandate requested a summary of the state of knowledge on the presence of microplastics in the environment and the implications for the ecosystem, terrestrial and aquatic ... -
Hope for the future? Students’ attitudes towards entrepreneurship, innovation, and international mobility
(Chapter; Bokkapittel, 2018)Møre and Romsdal is historically an innovative and internationally oriented region, which is dependent on a workforce that can act entrepreneurially, be innovative within existing companies and cultivate connections with international markets. This study explores whether students at NTNU in Aalesund are up for the task. The findings are promising for Møre and Romsdal and indicate that students have ... -
Peracetic acid as a potential treatment for amoebic gill disease (AGD) in Atlantic salmon - Stage 1
(Research report; Forskningsrapport, 2019-06)PERAGILL is an initiative that ultimately aims to develop an alternative treatment for the currently available therapies for amoebic gill disease (AGD) that have several practical and environmental issues. Peracetic acid (PAA) is a potent oxidant with a broad spectrum of antimicrobial activity and decays into relatively safe residuals, thus, has been widely recognised as a sustainable disinfectant ... -
Juntavadda. Undersøkelse av stein-mesolittiske aktivitetsområder i Kautokeino k./Guovdageaidnu s.
(Research report; Forskningsrapport, 2019)Sikringsundersøkelse av steinalderboplass som er skadet av barmarkskjøring, erosjon og sandflukt.<p> <p>Det ble dokumentert fire ansamlinger med skjørbrente steiner. I tilknytning til disse ble det dokumentert enkelte avslag og brente bein spredt på overflaten. Utgravning av tre av ansamlingene resulterte i et meget begrenset funnmateriale og ingen anlegg eller kulturspor. Det fjerde funnområdet, ... -
EEG-based effective connectivity distinguishes between unresponsive states with and without report of conscious experience and correlates with brain complexity
(Master thesis; Mastergradsoppgave, 2017-11-01)Objective methods for distinguishing conscious from unconscious states in humans are of key importance for clinical evaluation of general anesthesia and patients with disorders or consciousness. Here, we test the generalizability of a DTF-based algorithm - a measure of effective connectivity - as an objective measure of conscious experience during anesthesia and correlate it with a well-tested index ...