Viser treff 192-211 av 505

    • Ice Detection of Pure and Saline Ice Using Infrared Signature 

      Rashid, Taimur; Khawaja, Hassan Abbas; Edvardsen, Kåre (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-11-30)
      The paper shows the possible implementation of an Infrared (IR) ice detection technique. In respect of safety in marine operations, saline ice detection can be significant for automated de-icing systems. Experimentation is performed to observe and detect saline and pure ice samples. The discussed detection mechanism is unique and differs from passive IR detection by introducing the self-heating ...
    • Ice Detection Setup Using Infrared and Active Heating 

      Rashid, Taimur; Khawaja, Hassan Abbas; Edvardsen, Kåre (Conference object; Konferansebidrag, 2015)
      Considering the cold environment operations, ice accretion can occur at a rapid pace and can adversely affect the operations. In such scenario, ice detection is useful for the ice mitigation and removal upon the marine and offshore structures. Various techniques exist in the literature to detect the icing mainly utilizing its physical or electromagnetic properties. The parameters measured by these ...
    • Ice, snow and polar bears: Decision making among professional guides in the Arctic 

      Karlsen, Mathis (Master thesis; Mastergradsoppgave, 2022-05-31)
      The purpose of this thesis is to study how Arctic Nature Guides make decisions in uncertain and ambiguous situations. In this context, guides face factors related to the guests’ expectancies to the guided tour, external risks, and aspects that influence their decisions. The terms crisis and crisis management are utilised to understand the contextual components throughout the decision-making process. ...
    • Icing Effects on Power Lines and Anti-icing and De-icing Methods 

      Solangi, Ali Raza (Master thesis; Mastergradsoppgave, 2018-05-30)
      Icing on power lines may lead to compromise safety and reliability of electric supply network. Prolong icing can lead to power breakdown and collapse of towers. Since power transmission lines are mostly overhead and could face the direct impact of icing, and it is one of the main challenges faced by power distribution companies in cold regions. When the ice accretion crosses the safety limit then ...
    • Identification of Challenges and Hazards associated with Cruise Traffic and Evacuation in the Arctic 

      Dalsand, Raymond; Nese, Tord (Master thesis; Mastergradsoppgave, 2016-06-06)
      Arctic cruise tourism is gaining in popularity. There is a need to better understand hazards that are connected with cruise traffic and evacuation in the Arctic. The Polar Code tries to enhance the safety of persons travelling in polar waters by giving functional requirements to life-saving appliances. However, it is unclear what is needed to achieve the required functionality, and how existing ...
    • Identifying hazards to include in risk analyses 

      Leonhardsen, Mette; Olsen, Odd Einar Falnes; Nilsen, Aud Solveig (Bokkapittel; Chapter, 2018)
      A risk analysis should provide decision makers with information regarding relevant hazards. The initiating phase, where the risk analysts identify hazards to be included in the risk analysis, lays the foundation for the rest of the analysis. This phase is, therefore, of great importance. In this paper, we examine how risk analysts in a municipal setting identified potential adverse events and how ...
    • Impact of and solutions to effects of climate changes for Longyearbyen, Svalbard, Norway 

      Winther, Susanna N; Gudmestad, Ove Tobias (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-12-21)
      Climate changes forces us to make significant mitigation and adaptation measures. As temperature rises and the environmental conditions changes, a variety of challenges occur. Across the whole globe, harming consequences are already being experienced. The Arctic region is particularly vulnerable to changes in Earth’s climate system, especially because of the albedo effect, and the region is ...
    • Impact of increasing share of wind energy on Nordic electrical energy market predictions 

      Chen, Hao (Conference object; Konferansebidrag, 2022-10-14)
    • The impact of safety factors on decision-making in maritime navigation 

      Xue, Hui; Røds, Johan-Fredrik; Batalden, Bjørn-Morten Erdal (Journal article; Tidsskriftartikkel; Peer reviewed, 2023)
      Approximately 85% of maritime accidents are accounted for by navigation accidents, caused by human errors such as mistakes in impropriate decision-making. Decision-making skills are the key to safe sailing. However, the assessment of decisionmaking based on objective measurements is rarely studied. This paper aims to assess the impact of safety factors on decision-making in maritime navigation. ...
    • Impact of temperature on the leaching of sulphate, Co, Fe, Mn, Ni and Zn from the Ballangen tailings deposit, Norway: A laboratory column experiment 

      Lu, Jinmei; Walder, Ingar; Leiviskä, Tiina (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-10-29)
      Temperature is an important factor affecting the leaching of contaminants from waste deposits, especially in the Nordic region where temperature change is more drastic than other areas. In this study, the impact of temperature variation in the leaching of sulphate, Co, Fe, Mn, Ni and Zn from the Ballangen tailings deposit, northern Norway, was investigated using a column leaching experiment. ...
    • Implementation and Control of an Inverted Pendulum on a Cart 

      Hanekam, Halvard (Master thesis; Mastergradsoppgave, 2021-05-28)
      An Inverted Pendulum on a Cart is a common system often used as a benchmark problem for control systems. The system consists of a cart that can move in one direction on the horizontal plane and a pendulum attached to the cart through a hinge point. The pendulum can rotate 360° on the plane made up of the vertical direction and the direction the cart can move. The system is controlled by applying a ...
    • Implementation of Sustainable Aviation Fuel. A PESTEL-analysis 

      Jakobsen, Søren; Laugesen, Simon (Master thesis; Mastergradsoppgave, 2023-06-30)
      Global climate changes are one of the greatest global threats affecting society. All sectors, from the largest ventures to the single individual, must aid in addressing and affecting these changes, resulting in a more sustainable and green future for the generations to come. Aviation currently stands for approximately 2.5% of global total anthropogenic CO2-emissions, which is rapidly climbing towards ...
    • Implementation of Virtual Reality (VR) simulators in Norwegian maritime pilotage training 

      Weissenberger, Finlo (Master thesis; Mastergradsoppgave, 2022-06-01)
      With millions of tons of cargo transported to and from Norwegian ports every year, the maritime waterways in Norway are heavily used. The high consequences of accidents and mishaps require well-trained seafarers and safe operating practices. The normal crews of vessels are supported by the Norwegian Coastal Administration (NCA) pilot service when operating vessels not meeting specific ...
    • Improving Mechanical Grip of Tyres on Snow and Icy Road Surfaces using Finite Element Method 

      Ludvigsen, Sondre; Khawaja, Hassan Abbas (Conference object; Konferansebidrag, 2016)
      Harsh winter conditions are known to be one of the most challenging environments for driving. Although the number of fatal accidents is higher during the summer compared to the winter in Norway (according to Norwegian Highways Authority), the total number of accidents is higher in the winter season. These accidents mainly happen due to loss traction on snowy or icy road surfaces. The loss of traction ...
    • Improving mechanical grip on winter tires. Finite element analysis on pressure profile of airless tire compared to conventional tire using ANSYS workbench 

      Ludvigsen, Sondre (Master thesis; Mastergradsoppgave, 2017-06-22)
      The harsh climate of the arctic has always been one of the most difficult areas to drive cars in. The severe loss in traction due to snow and icing on the roads, has led to an increased risk of collisions. The winter tires for cars has developed through the years after their introduction in the 1930’s. There have been three revolutionary changes made since then; implement of studs, changing in tread ...
    • Improving spam email classification accuracy using ensemble techniques: a stacking approach 

      Adnan, Muhammad; Imam, Muhammad Osama; Javed, Muhammad Furqan; Murtza, Iqbal (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-20)
      Spam emails pose a substantial cybersecurity danger, necessitating accurate classification to reduce unwanted messages and mitigate risks. This study focuses on enhancing spam email classification accuracy using stacking ensemble machine learning techniques.We trained and tested five classifiers: logistic regression, decision tree, K-nearest neighbors (KNN), Gaussian naive Bayes and AdaBoost. To ...
    • The individual’s ability to prepare: What significance does this have for the total defence and societal safety? A study of how citizen preparedness is related to municipal emergency preparedness planning 

      Salehi, Daria (Master thesis; Mastergradsoppgave, 2019-05-31)
      The world is changing. Some things get better while others get worse. We live in a vulnerable society and societal safety is something that both occupy most of us and is a safety factor in our everyday life. The authorities are responsible for societal safety, but it is also a responsibility for each of us to create common safety and an individual sense of security. The societal safety work is ...
    • Industrial Equipment’s Throughput Capacity Analysis 

      Barabadi, Abbas; Nouri, ali; Hazrati, Ali; Khodayari, Aliasqar; Mokhberdoran, Mahdi (Journal article; Tidsskriftartikkel; Peer reviewed, 2022-01-01)
      Throughput capacity (TC) is defined as the total amount of material processed or produced by the system in the given time. In practice, full capacity performance for industrial equipment is impossible because the failures are affected and cause a reduction. Therefore, failure interruptions, especially critical ones (bottlenecks), must be detected and considered in production management. From the ...
    • The influence of different fuels and injection methods of RCCI and DCI in hybrid ICE-Battery vehicle performance 

      Taghavifar, Hadi (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-01-16)
      The incorporation of two recent technologies of using the dual-fuel reactivity controlled compression ignition (RCCI) combustion engine within the hybrid electric vehicle (HEV) is practiced to show how this combination can reduce the emission and enhance the thermal efficiency of the system. In particular, the heat transfers from the engine wall and the exhaust heat flow from the engine under ...
    • Infodemi som smitter - En studie om falske nyheter og risikokommunikasjon i Norge under covid-19 pandemien 

      Kjeldsen, Ottar Bjørkli (Master thesis; Mastergradsoppgave, 2021-06-01)
      Under covid-19 pandemien har det vært et ekstremt behov for å sørge for at riktig informasjon når ut til befolkningen for å redusere spredning av viruset. I usikre tider søker og konsumerer mennesker informasjon i langt større grad enn hva som er vanlig i en normaltilstand. World Health Organization har påpekt at vi ikke bare er under en pandemi, men også en «infodemi», hvorav det innebærer en ...