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    • Bivalve beds reveal rapid changes in ocean oxygenation in the Boreal Middle Triassic – a case study from Svalbard, Norway 

      Engelschiøn, Victoria Sjøholt; Bernhardsen, Sofie; Wesenlund, Fredrik; Hammer, Øyvind; Hurum, Jørn Harald; Mørk, Atle (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-03-17)
      A fossil-rich interval in the organic-rich marine black mudstone of the Middle Triassic Botneheia Formation on eastern Svalbard was logged in high-resolution on an extremely well exposed section with emphasis on bivalve beds, taphonomic features, trace fossils and oxygenation proxies. The size distribution, fragmentation, articulation and orientation of three bivalve beds of the epifaunal flat ...
    • What makes an acute emergency? Temporal manifestation patterns and global health emergencies 

      Staupe, Reidar; Rubin, Olivier (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-06-09)
      In this article, we consider the role that onset patterns play in shaping how acute global events are taken to be, drawing on illustrative cases from the field of global health emergencies. We identify four temporal manifestation patterns that we argue display distinct political dynamics. First, an emergent onset pattern (e.g. the H1N1 health emergency), with political dynamics dominated by ...
    • Exploring multipartite genomes using pangenome analysis 

      Sonnenberg, Cecilie Bækkedal (Doctoral thesis; Doktorgradsavhandling, 2023-06-21)
      <p>Bacteria are small single-celled organisms that are found in nearly every habitat on Earth. While bacterial genomes usually consist of one large circular replicon, about 10% of bacteria have organized their genes onto several large replicons. These multipartite bacteria are often found in symbiotic or pathogenic relationships with other higher organisms and are believed to have greater ability ...
    • ZeroComm: Decentralized, Secure and Trustful Group Communication 

      Witharanage, Yasiru Rathsara (Mastergradsoppgave; Master thesis, 2023-05-15)
      In the context of computer networks, decentralization is a network architecture that distributes both workload and control of a system among a set of coequal participants. Applications based on such networks enhance trust involved in communication by eliminating the external author- ities with self-interests, including governments and tech companies. The decentralized model delegates the ownership ...
    • Sneak 

      Syversen, Torkel (Mastergradsoppgave; Master thesis, 2023-05-15)
      Secure multiparty computation (SMC) is a technique that allows multiple parties to jointly compute a function while keeping their inputs private. This technique has gained significant attention due to its potential applications in various fields, including privacy-preserving healthcare, politics and finance. SMC involves a set of protocols that enable parties to achieve secure computation and ...
    • Against the Trend-An tentative Data Analysis Method using Classical Regression against Machine Learning Approach 

      Yuan, Fuqing; Lu, Jinmei (Journal article; Tidsskriftartikkel, 2019)
      The machine learning approach is a new hot topic in recent years that are widely used in different sections, including industries, economy, disaster prediction and politics. After decades’ of development, the available machine learning algorithms are numerous and diverse. Traditional methods such as regression, classical statistical methods, are unfortunately laid aside as non-mainstream. This paper ...
    • Microphone recording of flexural waves for estimation of lake ice thickness 

      Romeyn, Rowan Peter; Hanssen, Alfred (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-04-20)
      In this study we took an intentionally low-tech approach, aiming to estimate key physical parameters of lake ice using a single, inexpensive microphone. We consider this approach highly relevant to the issue of transport safety and the relatively high number of accidents involving breakthrough failure of thin ice underlines the importance of this topic. We conducted a range of experiments on three ...
    • Multimodal Integrated Remote Sensing for Arctic Sea Ice Monitoring 

      Khachatrian, Eduard (Doctoral thesis; Doktorgradsavhandling, 2023-06-15)
      Remote sensing data acquired from various sensors have been used for decades to monitor sea ice conditions over polar regions. Sea ice plays an essential role in the polar environment and climate. Furthermore, sea ice affects anthropogenic activities, including shipping and navigation, the oil and gas industry, fisheries, tourism, and the lifestyle of the indigenous population of the Arctic. With ...
    • Towards automation in the fish processing industry using machine learning 

      Henriksen, Jostein (Master thesis; Mastergradsoppgave, 2023-04-11)
      This master project was inspired by challenges faced by commercial fisheries in the north of Norway of controlling food quality and food safety. In this thesis, four different ML models’ ability to do object and keypoint detection on specific anatomy parts of fish, has been studied. With the aim of recommending a suitable model to be part of a CV system for an industrial fish gutting machine that ...
    • Presenting CODS (Cell Organelle Dynamic Simulation) 

      Celeste, Aaron (Master thesis; Mastergradsoppgave, 2023-05-15)
      The interactions between organelles within living cells have an effect on the health of the organism [1]. One way to study this behavior is to develop algorithms which can automatically detect and track objects in microscopy video data. A large amount of data is needed to train algorithms to identify particular behaviors in subcellular machinery. If the case of segmentation is considered, videos of ...
    • UAV as an inspection tool for power lines in Troms: Assessment of UAVs as a viable alternative to already established methods for inspection of power lines. 

      Ubeda-Nordnes, Jonathan (Master thesis; Mastergradsoppgave, 2018-06-02)
      Power line inspection is one of the most important things in a modern society, and therefore it is important that it be kept in a functional state. Because of this, many methods are used to keep it that way. There are many factors to consider before using UAVs as a viable alternative to already established methods. Factors such as robustness against harsh weather, limits to its range and battery ...
    • The three missing terms in Ramanujan’s septic theta function identity 

      Rebák, Örs (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-02-23)
      On page 206 in his lost notebook, Ramanujan recorded the following enigmatic identity for his theta function φ(q): φ(e^{−7π√7}) = 7^{−3/4}φ(e^{−π√7}){1 + ( )^{2/7} + ( )^{2/7} + ( )^{2/7}}. We give the three missing terms. In addition, we calculate the class invariant G_{343} and further special values of φ(e^{−nπ}), for n = 7, 21, 35, and 49.
    • Quantifying athlete wellness: Investigating the predictive potential of subjective wellness reports through a player monitoring system 

      Johansen, Dag; Pettersen, Susann Dahl; Alexandersen, Andreas (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-05-25)
      This study investigated the potential of self-reported wellness data from a player monitoring system and its predictive power of individual match performance among a female professional football player cohort. Using longitudinal data collected from the Pm Reporter Pro mobile application and corresponding individual performance scores (InStat Index), the study investigated if pre-match perceived ...
    • Modern Army for Modern Times or Private Paramilitary? Polish Territorial Defense Force as a Benchmark Case in Conflict Evolution 

      Fornusek, Martin; Bartoszewicz, Monika Gabriela (Journal article; Tidsskriftartikkel, 2023)
      The new Polish military branch, the Territorial Defense Force (TDF), has been described both as a defensive tool against Russian hybrid warfare and as a private paramilitary force of the incumbent Law and Justice Party. This paper examines the strategic, political, and military purposes of the Territorial Defense Force using two theoretical models. One is designed for analyzing units intended to ...
    • Real gas flows issued from a source 

      Lychagin, Valentin; Roop, Mikhail (Journal article; Tidsskriftartikkel; Peer reviewed, 2019-12-23)
      Stationary adiabatic flows of real gases issued from a source of given intensity are studied. Thermodynamic states of gases are described by Legendrian or Lagrangian manifolds. Solutions of Euler equations are given implicitly for any equation of state and the behavior of solutions of the Navier–Stokes equations with the viscosity considered as a small parameter is discussed. For different intensities ...
    • Health research requires efficient platforms for data collection from personal devices 

      Johannessen, Erlend; Henriksen, André; Årsand, Eirik; Horsch, Alexander; Johansson, Jonas; Hartvigsen, Gunnar (Journal article; Tidsskriftartikkel; Peer reviewed, 2023)
      Data from consumer-based devices for collecting personal health-related data could be useful in diagnostics and treatment. This requires a flexible and scalable software and system architecture to handle the data. This study examines the existing mSpider platform, addresses shortcomings in security and development, and suggests a full risk analysis, a more loosely coupled component- based system for ...
    • Data collection and analysis methods for smart nudging to promote physical activity: Protocol for a mixed methods study 

      Dhanasekaran, Seshathiri; Andersen, Anders; Karlsen, Randi; Håkansson, Anne; Henriksen, André (Journal article; Tidsskriftartikkel; Peer reviewed, 2023)
      New digital technologies like activity trackers, nudge concepts, and approaches can inspire and improve personal health. There is increasing interest in employing such devices to monitor people’s health and well-being. These devices can continually gather and examine health-related information from people and groups in their familiar surroundings. Context-aware nudges can assist people in self-managing ...
    • Segmentation of Polar Mesospheric Summer Echoes using Fully Convolutional Network 

      Domben, Erik Seip (Master thesis; Mastergradsoppgave, 2023-04-26)
      Polar Mesospheric Summer Echoes (PMSE) are strong coherent radar echoes that occur in the 80 to 90 km altitude range of the mesosphere during the Arctic summer months. These echoes are of significant interest to the space physics community as they provide insight into changes that occur in the atmosphere. To better understand these changes, large datasets of PMSE echoes need to be analysed. In ...
    • Advancing Deep Learning for Marine Environment Monitoring 

      Choi, Changkyu (Doctoral thesis; Doktorgradsavhandling, 2023-06-09)
      Marine environment monitoring has become increasingly significant due to the excessive exploitation of oceans, which detrimentally impacts ecosystems. Deep learning provides an effective monitoring approach by automating the analysis of vast amounts of observed image data, enabling stakeholders to make informed decisions regarding fishing quotas or conservation efforts. The success of deep learning ...
    • How is reporting used to increase the safety in adventure tourism? 

      Lunde, Stig Magnus (Master thesis; Mastergradsoppgave, 2023-02-11)
      Modern land-based tourism in Longyearbyen had its beginning in the early 90s, but ships with tourists visiting Svalbard can be traced back as far as 1807. Over the past 20 years, the interest in Svalbard as a tourist destination has increased significantly, which has led to a rapid increase in the number of visitors. This relatively young industry have had to constantly adapt to this increased number ...