Viser treff 61-80 av 336

    • 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 ...
    • Biodiversity Impact Assessment Considering Land Use Intensities and Fragmentation 

      Scherer, Laura; Rosa, Francesca; Sun, Zhongxiao; Michelsen, Ottar; De Laurentiis, Valeria; Marques, Alexandra; Pfister, Stephan; Verones, Francesca; Kuipers, Koen (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-11-16)
      Land use is a major threat to terrestrial biodiversity. Life cycle assessment is a tool that can assess such threats and thereby support environmental decision-making. Within the Global Guidance for Life Cycle Impact Assessment (GLAM) project, the Life Cycle Initiative hosted by UN Environment aims to create a life cycle impact assessment method across multiple impact categories, including ...
    • Integration of renewable energy and sustainable development with strategic planning in the mining industry 

      Barabadi, Abbas; Ataei, Mohammad; Pouresmaieli, Mahdi; Nouri, Ali (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-16)
      With an increase in the world population, the global demand for minerals is rising, increasing energy consumption. Due to the distance of mines from urban areas, the energy required for mining is highly dependent on fossil fuels. Using renewable energies is an effective solution to reducing this problem. This study examines the challenges and opportunities of integrating renewable energy into ...
    • 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. ...
    • Emergency management competence needs: Education and training for key emergency management personnel in a maritime Arctic environment MARPART2-(MAN), Project Report 2 

      Borch, Odd Jarl; Roud, Ensieh (Research report; Forskningsrapport, 2020)
      This report focuses on competence demands among key management personnel responsible for maritime emergency response. The report has a special focus on competence challenges related to operations in an Arctic environment.
    • Design and Optimizing the Sea-Spray Collector using CFD 

      Dhar, Sushmit; Khawaja, Hassan; Naseri, Masoud; Edvardsen, Kåre (Conference object; Konferansebidrag, 2022)
      Sea-spray contributes significantly to marine icing, posing a severe challenge to marine operations in cold regions. There are two parts to spray icing, i) amount of water impingement on marine structure, ii) thermodynamics/heat transfer governing the fraction of spray that freezes and adheres to the structure. Sea-spray collection provides means to investigate into marine icing phenomenon. In this ...
    • Sykdomsbyrde som følge av luftforurensning i Oslo 

      Aasvang, Gunn Marit; Låg, Marit; Schwarze, Per Everhard (Research report; Forskningsrapport, 2016)
      Arbeidet i denne rapporten er et oppdrag fra Statens vegvesen i forbindelse med revisjon av verdsetting av luftkvalitet. Oppdraget var å bidra til at helsevirkninger av luftforurensning i større grad kan inkluderes i fremtidig økonomisk verdsetting av luftforurensning. Folkehelseinstituttet (FHI) har gjennomført beregninger av sykdomsbyrde som følge av luftforurensning i Oslo. Estimater på for tidlige ...
    • Flystøy og luftforurensning ved flyplasser: Mulige helsekonsekvenser ved Oslo lufthavn 

      Krog, Norun Hjertager; Refsnes, Magne Arnold; Aasvang, Gunn Marit; Låg, Marit; Øvrevik, Johan (Research report; Forskningsrapport, 2017)
      Denne rapporten er skrevet på oppdrag fra Ullensaker kommune. Som vertskap for Norges hovedflyplass Oslo lufthavn (OSL) ønsket kommunen oppdatert vitenskapelig kunnskap om mulige virkninger på befolkningens helse og trivsel av de støynivåene man har i nærområdet til flyplassen. Kommunen ønsket også en vurdering av mulig luftforurensning ved flyplassen, og hva som kan være helsemessige konsekvenser ...
    • SARINOR WP 3 "SØK". (Norut rapport 11/2015) 

      Antonsen, yngve; Sivertsen, Agnar Holten; Grydeland, Tom; Johansen, Kjell-Sture; Storvold, Rune; Rognmo-Hodge, Andrew; Hagen, Snorre; Sørensen, Geir-Arne; Sydnes, Maria; Sydnes, Are K.; Hansen, Bernt Inge (Research report; Forskningsrapport, 2015)
      Arbeidet analyserer tilgjengelig søk og redningskapasitet (SAR), med fokus på søk, med sikte på å avdekke forbedringspunkter. Arbeidet er begrenset til Norges ansvarsområde i henhold til Arktisk råds avtale om søk og redning i Arktis. Redningshelikopter på SAR beredskap består av 2 AS332L1 AWSAR på Svalbard, et Sea King på Banak og et i Bodø. I tillegg har Bristow et EC225 AWSAR helikopter i Hammerfest. ...
    • Construction and Installation of the New CERN Proton Synchrotron Internal Beam Dumps 

      Andersen, Kristian G; Calviani, Marco; Cherif, Ahmed; Coiffet, Thibaut; De Macedo, Aurelio; Devidal, Sylvain; Geisser, Jean-Marie; Gilardoni, Simone S; Gillet, Martin; Grenier-Boley, Edouard; Heredia, Jorge; Majbour, Abdelhabib; Monnet, Franck; Monteserin, Manuel Redondas; Nuiry, Francois-Xavier; Pugnat, Dominique; Romagnoli, Giulia; Seraphin, Yann; Somoza, Jose; Thaus, Nicolas (Chapter; Bokkapittel, 2021-08-26)
      In the framework of the CERN Large Hadron Collider Injectors Upgrade (LIU) Project, the Proton Synchrotron (PS) has been equipped with two new movable Internal Dumps (PSID), each of them capable of absorbing particle beams of an energy of up to 100 kJ. These dumps replace the old Internal Dumps, which have been operated in the accelerator complex since their installation in 1975 until their ...
    • Advanced Data Analytics towards Energy Efficient and Emission Reduction Retrofit Technology Integration in Shipping 

      Perera, Lokukaluge Prasad; Ventikos, N P; Rolfsen, Sven; Öster, Anders (Chapter; Bokkapittel, 2021)
      An overview of integrating two energy efficient and emission reduction technologies to improve ship energy efficiency under advanced data analytics is presented in this study. The proposed technologies consist of developing engine and propulsion innovations that will be experimented under laboratory conditions and large-model-scale sea trials, respectively. These experiments will collect large ...
    • Damage Characterisation in Composite Laminates Using Vibro-Acoustic Technique 

      Andersen, Kristian G; Jombo, Gbanaibolou; Ismail, Sikiru Oluwarotimi; Chen, Yong Kang; Dhakal, Hom Nath; Zhang, Yu (Journal article; Tidsskriftartikkel; Peer reviewed, 2021-04-30)
      The need to characterise in-service damage in composite structures is increasingly becoming important as composites find higher utilisation in wind turbines, aerospace, automotive, marine, among others. This paper investigates the feasibility of simplifying the conventional acousto-ultrasonic technique set-up for quick and economic one-sided in-service inspection of composite structures. Acousto-ultrasonic ...
    • From Waste to Value: A Practical Framework for Waste Identification and Mitigation Using Lean Management Principles 

      Barabadi, Abbas; Nouri, Ali (Chapter; Bokkapittel, 2023)
      In the complex and fast-changing marketing environment, there is a constant need to reduce costs and enhance the performance of production systems. The cost-cutting strategies need to consider the long-term effect on the company. For example, the layoff may reduce the cost in the short term, but in the long term, it may significantly affect employees' psychological safety and increase human error. ...
    • Postural Stability Variables for Dynamic Equilibrium 

      Dutt-Mazumder, Aviroop; Dhar, Sushmit; Dutt-Mazumder, Courtney (Journal article; Tidsskriftartikkel; Peer reviewed, 2018)
      Experiments on the maintenance of postural stability on flat stationary support surfaces (quiet standing) that show only limited modes of the potential configurations of balance stability have dominated investigations of balance in quiet upright standing. Recent studies have revealed coordination properties of the whole body in maintaining dynamic postural stability with the application of moving ...
    • Cross-Domain Transfer Learning for Natural Scene Classification of Remote-Sensing Imagery 

      Akhtar, Muhammad; Murtza, Iqbal; Adnan, Muhammad; Saadia, Ayesha (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-07-05)
      Natural scene classification, which has potential applications in precision agriculture, environmental monitoring, and disaster management, poses significant challenges due to variations in the spatial resolution, spectral resolution, texture, and size of remotely sensed images of natural scenes on Earth. For such challenging problems, deep-learning-based algorithms have demonstrated amazing ...
    • Perspectives on the economic and political history of the Ross Sea 

      Basberg, Bjørn; Lintott, Bryan John (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-09-07)
      The paper analyses the economic and political history of the Ross Sea, where exploration, science, commercial exploitation, politics and adventure became highly interlinked and interwoven. Expedition accounts and the extensive literature on Antarctic history and politics inform the contextual aspects. The archives of the Norwegian whaling company A/S Rosshavet, established in 1923, and the ...
    • A Methodological Framework for the Resilience Analysis of Road Transport Networks Exposed to Freezing Rain 

      Ashrafi, Behrooz; Naseri, Masoud; Di Maio, Francesco P.; Zio, Enrico (Conference object; Konferansebidrag, 2022)
      Road transport network is one of the major critical infrastructures to be maintained resilient, since its disruption would not only have direct economic consequences, but it could also lead to domino effects on other critical infrastructures. This study proposes a methodological framework for the analysis of the resilience of road transport networks exposed to natural hazards, in particular to ...
    • Resilience of a transportation network: Importance of vulnerable nodes 

      Ashrafi, Behrooz; Naseri, Masoud; Barabady, Javad (Conference object; Konferansebidrag, 2022)
      Transportation Infrastructure is one of key critical infrastructures which are crucial for a wellfunctioning modern society. This study proposes a resilience-oriented framework for analyzing and ultimately mitigating risk and improving resilience for land transportation networks with a focus on vulnerable nodes. The framework uses network theory and considers the concept of independent pathways, ...
    • From Risk Management to Resilience Management in Critical Infrastructure 

      Rød, Bjarte; Lange, David; Theocharidou, Marianthi; Pursiainen, Christer Henrik (Journal article; Tidsskriftartikkel; Peer reviewed, 2020-05-07)
      This article discusses critical infrastructure resilience in terms of how it could be incorporated into the existing safety and security practices, namely the ISO 31000 risk management standard. The article starts by outlining the resilience discourse, focusing on the organizational, technological, and societal domains of resilience. It goes on to present an approach to how the risk management ...
    • A study of energy use and associated greenhouse gas emissions in Norwegian small-scale processing of whitefish 

      Høyli, Randulf; Aarsæther, Karl Gunnar (Journal article; Tidsskriftartikkel; Peer reviewed, 2023-08-26)
      This study considers the energy use and associated greenhouse gas (GHG) emissions at three fish processing companies, representing a seasonal small-scale whitefish processing industry within the Norwegian coastal fisheries. The primary objective is to analyse the energy use in small-scale processing of whitefish and to provide energy requirements for primary processing, freezer and freezer storage, ...