Recent additions

  • Unsupervised Change Detection in Heterogeneous Remote Sensing Imagery 

    Luppino, Luigi Tommaso (Doctoral thesis; Doktorgradsavhandling, 2020-06-16)
    <p><i>Change detection</i> is a thriving and challenging topic in remote sensing for Earth observation. The goal is to identify changes that happen on the Earth by comparing two or more satellite or aerial images acquired at different times. Traditional methods rely on homogeneous data, that is, images acquired by the same sensor, under the same geometry, seasonal conditions,and recording ...
  • Efficient Bayesian analysis of long memory processes applied to climate 

    Myrvoll-Nilsen, Eirik (Doctoral thesis; Doktorgradsavhandling, 2020-05-22)
    Temperature fluctuations can be described by a persistent correlation structure known as long-range dependence (LRD). This is a phenomenon which implies that the autocorrelation function follows a power-law decay and that observations may still be significantly correlated even if the temporal or spatial distance between them is large. Moreover, temperature is known to be influenced by radiative ...
  • On sea-ice forecasting 

    Fritzner, Sindre Markus (Doctoral thesis; Doktorgradsavhandling, 2020-05-15)
    Accurate sea-ice prediction is essential for safe operations in the Arctic and potentially also for weather forecast at high-latitudes. The increasing number of sea-ice related satellite observations in the Arctic can be used to improve the model predictions through data assimilation. For sea ice, sea-ice concentration (SIC) observations have been available for many years. Observational information ...
  • Using FullFlow to manage the overwhelming flood of patients’ self-collected health data: A system that addresses acceptance barriers regarding the introduction of diabetes patients’ self-collected health data into electronic health records and medical consultations 

    Giordanengo, Alain (Doctoral thesis; Doktorgradsavhandling, 2020-03-31)
    Patients increasingly collect lifestyle and health-related data thanks to the explosion of sensors and healthcare applications. Multiple studies have shown that this data can be useful during consultations, resulting in more customised medical services. Moreover, this data permits clinicians to gain an overview of the patients’ conditions and enables patients to gain knowledge about the consequences ...
  • Context Centric Approach of Semantic Image Annotation and Retrieval 

    Elahi, Najeeb (Doctoral thesis; Doktorgradsavhandling, 2020-03-27)
    This thesis proposes a novel approach to explore and extract context information attached with images, mainly gathered from social network sites. I first performed a user study, to understand the user behavior on social network sites. I inferred that the relationship among users have central importance.<p> <p>To assist users to annotate images in social network, I use existing metadata gathered ...
  • Reconstruction of past and present methane emission in the Arctic cold seeps using biogeochemical proxies 

    Yao, Haoyi (Doctoral thesis; Doktorgradsavhandling, 2020-03-26)
    Global warming is now highly concerned by society as extreme weather is more often than ever, and the Arctic is experiencing warming twice as fast as the global mean. A large amount of carbon is stored in the forms of methane and methane hydrate in the continental margins worldwide. Methane is the most predominant gaseous compound in natural gas hydrate, which is stable under low temperature and ...
  • Structurally controlled hydrothermal mineralization: A case study from Vanna island, northern Norway 

    Paulsen, Hanne-Kristin (Doctoral thesis; Doktorgradsavhandling, 2020-02-27)
    The formation of metal and mineral deposits is closely related to the tectonic setting in which they form. Structures create avenues of net permeability that allow ore-bearing fluids to transport and deposit mineralization. In a deeper crustal setting these structures can be ductile shear zones, while brittle faults and fractures are the dominant fluid pathways in the upper continental crust. This ...
  • Two approaches to novel anticancer agents. Small-molecule library synthesis and evaluation 

    Boomgaren, Marc (Doctoral thesis; Doktorgradsavhandling, 2020-03-06)
    <p>The work presented in this dissertation combines two fully independent approaches to achieve compound libraries for anticancer drug research. <p>Project 1: Development of compounds inhibiting human dUTPase as an amplifier of a thymidylate synthase inhibitor based cancer therapy <p>The human dUTPase has received increased attention as a drug target in the recent years. Its inhibition can ...
  • New Corrole Analogues: Isocorroles and Azulicorrole 

    Larsen, Simon (Doctoral thesis; Doktorgradsavhandling, 2020-02-25)
    Porphyrinoids are a family of molecules, which consist of large ring structures or macrocycles. One of the oldest, and most important, of the porphyrinoids is the biological molecule called porphyrin. Since the dawn of life, porphyrins have orchestrated photosynthesis and oxygen respiration, two of the most important energy-generating processes in nature. In addition to porphyrins, other porphyrinoids ...
  • A functional and structural study of three bacterial nucleic acid-interacting proteins. The story of a Ferric Uptake Regulator, an Oligoribonuclease and an ATP-dependent DNA ligase 

    Berg, Kristel (Doctoral thesis; Doktorgradsavhandling, 2020-02-07)
    Nucleic acid-interacting proteins are essential players in cellular processes of all living organisms. In the present study, we explore three psychrophilic-derived proteins involved in gene regulation, RNA degradation and DNA ligation in bacterial cells, with one common feature; they perform their activity by interacting with nucleic acids. The Ferric uptake regulator (Fur) is a global transcription ...
  • Novel strategies for super-resolution fluorescence microscopy 

    Lahrberg, Marcel (Doctoral thesis; Doktorgradsavhandling, 2019-12-11)
    <p>Minimally invasive technologies to characterize the structure and functionality of biological samples on the cellular and molecular scale are fundamental to life sciences. Optical fluorescence imaging at visible wavelengths is able to acquire to do so. Due to the wavelike nature of light the maximum achievable resolution in conventional microscopy is limited by diffraction, about half the wavelength ...
  • Analysis of Oil Spill and Sea Ice Measurements Using Full-Polarimetric and Hybrid-Polarity Synthetic Aperture Radar data 

    Espeseth, Martine (Doctoral thesis; Doktorgradsavhandling, 2019-12-05)
    Synthetic Aperture Radar (SAR) data has been used for decades to detect oil slicks and monitoring sea ice. With increased oil and gas exploration in the Arctic follows higher risk for oil spills. Knowledge of the sea ice and oil spills is important for making clever and efficient decisions in a hectic and non-hectic operational situation. The potential and limitations of the hybrid-polarity (HP) SAR ...
  • Spatial extent of solar proton impact in the Earth's atmosphere - Observations and modeling 

    Heino, Erkka Petteri (Doctoral thesis; Doktorgradsavhandling, 2019-12-18)
    Solar proton events cause large-scale ionization in the Earth's middle atmosphere leading to chemical changes, changes in the energy budget of the middle atmosphere, and radio wave absorption. The accurate implementation of the spatial impact of solar protons and other particle ionization sources in climate models is necessary to understand the role of energetic particle precipitation in natural ...
  • Advancing Deep Learning for Automatic Autonomous Vision-based Power Line Inspection 

    Nguyen, Van Nhan (Doctoral thesis; Doktorgradsavhandling, 2019-12-03)
    Electricity is fundamental to the ability to function of almost all modern-day societies. To maintain the reliability, availability, and sustainability of electricity supply, electric utilities are usually required to perform visual inspections on their electrical grids regularly. These inspections have been typically carried out using a combination of airborne surveys via low-flying helicopters and ...
  • Quantitatively reinterpreting atomic force microscopy via the data science paradigm 

    Lai, Chia-Yun (Doctoral thesis; Doktorgradsavhandling, 2019-11-22)
    From the invention of the atomic force microscope (AFM) in 1986, tremendous efforts have been put into developing this tool. The AFM has long been considered as one of the top choices to probe the nanoscale world with the ability to achieve nanoscale resolution imaging of surfaces under different environments. Advances in instrumentation combined with the exploitation of sophisticated data analysis ...
  • Geochemistry of sediment-hosted copper deposits and their environmental impact: A case study from the Nussir and Ulveryggen deposits, Repparfjord Tectonic Window, Northern Norway 

    Mun, Yulia (Doctoral thesis; Doktorgradsavhandling, 2019-11-07)
    Modern growing economy and technology require metals. Therefore mining is an unavoidable process. Mining in its turn results in the production of large amounts of mine waste. This research is focused on one type of mine waste, mine tailings, formed after the processing of Cu-sulphides deposits. Acid mine drainage (AMD) is a consequence of the oxidation of sulphide-rich rocks and has a drastic impact ...
  • On-chip optical nanoscopy: towards high throughput and multi-modality 

    Helle, Øystein Ivar (Doctoral thesis; Doktorgradsavhandling, 2019-11-07)
    Super-resolution microscopy techniques improve the resolution of the optical microscope beyond the diffraction limit of light. A range of different techniques demands different optical configurations and clever illuminating strategies to enhance the resolution. This has led to the development of advanced instrumentation, where the super-resolution mechanisms are adding both cost and bulk to the ...
  • A distributed remote presence system masking the effects of delays in human-to-human remote interaction 

    Su, Fei (Doctoral thesis; Doktorgradsavhandling, 2019-11-01)
    This dissertation presents MultiStage, a human-to-human interaction system meant to be use by actors on a stage to interact and perform with actors on other stages as if they were on the same stage. MultiStage includes several local side stages and a global side. It uses a publish-subscribe model to handle the handover of data streams. Local side produces data streams about actors to global side. ...
  • Exploring Quorum Sensing Dynamics and Biofilm Formation in the Fish Pathogen Aliivibrio salmonicida 

    Khider, Miriam (Doctoral thesis; Doktorgradsavhandling, 2019-10-22)
    <p>The marine pathogen <i>Aliivibrio salmonicida</i> is the causative agent of cold-water vibriosis, affecting mainly farmed salmonid fish when water temperatures are below 10°C. Even though cold-water vibriosis is no longer threatening Norwegian aquaculture, the reemergence of the disease is still a possibility. Therefore, it is crucial to gain knowledge and understanding of the pathogenicity ...
  • Along the path of bacterial nonulosonic acids. A study of the bio- and in vitro synthesis of sialic acid related compounds 

    Halsør, Marie-Josée Haglund (Doctoral thesis; Doktorgradsavhandling, 2019-10-25)
    Nonulosonic acids (NulOs) are sugars expressed on the surface of bacterial cells as well as vertebrates and are involved in a multitude of physiological and pathogenic processes. Their biosynthesis is directed by gene clusters that vary in both gene content and organization, leading to a diverse family of compounds. The exploration of this diversity is relatively recent, helped by the amount of ...

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