Recent additions

  • IoT in Arctic Tourism – A Case-study of the Tourist Information Office in Narvik 

    Mustafa, Ayah Mohamad Yazid Faisal; Noureddine, Rami; Thordarson, Diana Santalova (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11)
  • Localization, Navigation and Activity Planning for Wheeled Agricultural Robots – A Survey 

    Tahir, Syed Abdur Rahman (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11)
    High cost, time intensive work, labor shortages and inefficient strategies have raised the need of employing mobile robotics to fully automate agricultural tasks and fulfil the requirements of precision agriculture. In order to perform an agricultural task, the mobile robot goes through a sequence of sub operations and integration of hardware and software systems. Starting with localization, ...
  • Simulating wind characteristics through direct optimization procedures: illustration with three Russian sites 

    Kangash, Aleksei; Virk, Muhammad Shakeel; Maryandyshev, Pavel; Brillard, Alain (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-29)
    Wind energy assessment of a territory where a wind park is planned to be built is important. This can be performed through an appropriate evaluation of the wind characteristics in this territory. To simulate the wind speeds, a Weibull function is recommended whose parameters are classically determined either applying logarithms or using one of the formulas proposed in the literature. In the present ...
  • Cable Propelled Gondola System Operation in Icing Conditions 

    Azad, Zeeshan; Virk, Muhammad Shakeel (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-30)
    The scope of this study comprehends problems associated with modern urban vehicles known as cable propelled gondolas system operations in icing conditions. The aspects under consideration are problems related to the operations, safety, and maintenance of cable car systems in harsh climate conditions. The geographical location of the gondola cars makes them vulnerable to severe weather conditions ...
  • Ice Accretion on Fixed-Wing Unmanned Aerial Vehicle—A Review Study 

    Muhammed, Manaf; Virk, Muhammad Shakeel (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-03-28)
    Ice accretion on commercial aircraft operating at high Reynolds numbers has been extensively studied in the literature, but a direct transformation of these results to an Unmanned Aerial Vehicle (UAV) operating at low Reynolds numbers is not straightforward. Changes in Reynolds number have a significant impact on the ice accretion physics. Previously, only a few researchers worked in this area, ...
  • New dose-response model and SARS-CoV-2 quanta emission rates for calculating the long-range airborne infection risk 

    Aganovic, Amar; Cao, Guangyu; Wargocki, Pawel; Kurnitski, Jarek (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-14)
    Predictive models for airborne infection risk have been extensively used during the pandemic, but there is yet still no consensus on a common approach, which may create misinterpretation of results among public health experts and engineers designing building ventilation. In this study we applied the latest data on viral load, aerosol droplet sizes and removal mechanisms to improve the Wells Riley ...
  • Exploring the mutual influence among the social innovation factors amid the COVID-19 pandemic 

    Badri Ahmadi, Hadi; Lo, Huai-Wei; Pourhejazy, Pourya; Gupta, Himanshu; Liou, James J.H. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-06-01)
    From the triple bottom line, the social aspect has received relatively limited attention during the Corona Virus Disease (COVID-19) pandemic, particularly in the emerging economies. Social innovation factors help improve the sustainability performance of the companies. This study develops a social innovation decision framework and analyses the interrelationships among social innovation factors ...
  • Common Educational Teleoperation Platform for Robotics Utilizing Digital Twins 

    Kaarlela, Tero; Arnarson, Halldor; Pitkäaho, Tomi; Shu, Beibei; Solvang, Bjørn; Pieskä, Sakari (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-18)
    The erratic modern world introduces challenges to all sectors of societies and potentially introduces additional inequality. One possibility to decrease the educational inequality is to provide remote access to facilities that enable learning and training. A similar approach of remote resource usage can be utilized in resource-poor situations where the required equipment is available at other premises. ...
  • Vilenkin–Lebesgue Points and Almost Everywhere Convergence for Some Classical Summability Methods 

    Nadirashvili, Nato; Persson, Lars-Erik; Tephnadze, George; Weisz, Ferenc (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-17)
    The concept of Vilenkin–Lebesgue points was introduced in [12], where the almost everywhere convergence of Fejer means of Vilenkin–Fourier series was proved. In this paper, we present a different (and simpler) approach to prove a similar result, which can be used to prove that the corresponding result holds also in a more general context, namely for regular Norlund and T-means.
  • Large deviations for Markov jump processes in periodic and locally periodic environments 

    Piatnitski, Andrei; Pirogov, Sergei; Zhizhina, Elena (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12)
    The paper deals with a family of jump Markov process defined in a medium with a periodic or locally periodic microstructure. We assume that the generator of the process is a zero order convolution type operator with rapidly oscillating locally periodic coefficient and, under natural ellipticity and localization conditions, show that the family satisfies the large deviation principle in the path space ...
  • Discretization and Representation of a Complex Environment for On-Policy Reinforcement Learning for Obstacle Avoidance for Simulated Autonomous Mobile Agents 

    Jansson, Andreas Dyrøy (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-12)
    In recent years, the demand for digitalization, automation, and smart systems in the airline industry has accelerated. Furthermore, due to the ongoing global pandemic as of 2022, airlines are faced with the challenge of offering flexibility in both cargo and passenger capacity. Studies show that the use of smart products and autonomous agents are expected to play a key part in the digital transformation ...
  • Response Surface Methodology Analysis of Pyrolysis Reaction Rate Constants for Predicting Efficient Conversion of Bulk Plastic Waste into Oil and Gaseous Fuels 

    Irfan, Muhammad; Un Nabi, Rao Adeel; Hussain, Hammad; Naz, Yasin; Shukrullah, Shazia; Khawaja, Hassan; Rahman, Saifur; Ghanim, Abdulnoor; Kruszelnicka, Izabela; Ginter-Kramarczyk, Dobrochna; Legutko, Stanisław (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-17)
    The growing production of plastic waste and improper dumping after use has become a worldwide challenge. This waste is a substantial source of petroleum and can be effectively converted into pyrolytic oil and other useful products. A statistical prediction of the rate constants is essential for optimizing pyrolysis process parameters, such as activation energy (Ea), frequency factor (Ao), temperature ...
  • Artificial Thawing of Frozen Ground: A Review 

    Ngo, Phan Thu Huong; Sveen, Svein-Erik; Gjerløw, Eirik (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-07-27)
    Understanding the freezing and thawing processes in porous media such as soils is important, especially in regions experiencing seasonal frost or permafrost. These processes have a wide range of implications as diverse as how to maintain the structural integrity of roads, railways, pipelines, and buildings, to when to plant seeds during the growth season. Thawing of frozen ground is the opposite ...
  • 6G Network Architecture Using FSO-PDM/PV-OCDMA System with Weather Performance Analysis 

    Singh, Mehtab; Pottoo, Sahil Nazir; Armghan, Ammar; Aliqab, Khaled; Alsharari, Meshari; Abd El-Mottaleb, Somia A. (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-04)
    This paper presents a novel 160 Gbps free space optics (FSO) communication system for 6G applications. Polarization division multiplexing (PDM) is integrated with an optical code division multiple access (OCDMA) technique to form a PDM-OCDMA hybrid. There are two polarization states: one is X-polarization generated from adjusting the azimuthal angle of a light source at 0° while the other is ...
  • Applying the response surface methodology to predict the energy retrofit performance of the TABULA residential building stock 

    Aganovic, Amar; Kadric, Edin; Kadric, Dzana; Delalic-Gurda, Berina; Jackson, Steven (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-09-28)
    Recent advances in computing software have enabled the development of calibrated building energy simulations tools that allow retrofit-related analysis including optimization and energy-efficient building design. However, to create a national energy and climate plan, using these tools may imply a great deal of effort (time, cost, and human resources) to carry out simulations for the full set of ...
  • Toward Interactive Music Generation: A Position Paper 

    Dadman, Shayan; Bremdal, Bernt Arild; Bang, Børre; Dalmo, Rune (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-30)
    Music generation using deep learning has received considerable attention in recent years. Researchers have developed various generative models capable of imitating musical conventions, comprehending the musical corpora, and generating new samples based on the learning outcome. Although the samples generated by these models are persuasive, they often lack musical structure and creativity. For instance, ...
  • Blending techniques in Curve and Surface constructions 

    Lakså, Arne (Book; Bok, 2022)
  • Blendingsteknikker i kurve- og flatekonstruksjoner 

    Lakså, Arne (Book; Bok, 2022)
  • Experimental evaluation of low-displacement compression ignited engines operating with hydroxy gas as a supplementary gaseous fuel 

    Duarte, Natalia; Arango, Donovan; Polanco Pinerez, Geanette Cleotilde; Valencia, Guillermo; Duarte-Forero, Jorge (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-11-09)
    A large proportion of annual production of worldwide greenhouses gases results from the use of internal combustion engines. This experimental work evaluates the influence of dual-fuel operation on the overall emissions of a low-displacement compression-ignition engine based on operational conditions such as torque, rotational speed, and load. Hydroxy gas is used as a supplementary gaseous fuel ...
  • Multiphysics based Analysis of Materials for Roads in Cold Regions to Prevent Ice Adhesion and Low-Temperature Crack Developments 

    Andleeb, Zahra; Khawaja, Hassan; Moatamedi, Mojtaba (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-12-12)
    Roads constitute a significant hazard if the effects of wintertime are not handled well. After a heavy snowfall, the most dangerous factor is a slippery surface due to ice adhesion with the asphalt pavement. The ice on roads increases the risk of road accidents and, upon melting, contributes to the formation of Low-Temperature Cracks (LTCs) and potholes. This research explores the physical ...

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