Now showing items 124-143 of 912

    • Calculating Hourly Cost Rates In Project-Based Industries Part 2: cost management 

      Emblemsvåg, Jan; Cokins, Gary (Peer reviewed; Journal article, 2020)
      Hourly cost rates are crucial project costing due to the substantial proportion of labor costs in projects. Yet, there is little published about calculating hourly cost rates, and it is a contentious topic in corporations. ...
    • Can the operating limits of biogas plants operated under non-isothermal conditions be defined with certainty? Modeling self-optimizing attainable regions. 

      Neba, Fabrice Abunde; Tornyeviadzi, Hoese Michel; Asiedu, Nana Y.; Addo, Ahmad; Morken, John; Østerhus, Stein Wold; Seidu, Razak (Peer reviewed; Journal article, 2020)
      Uncertainty in operating parameters such as temperature undermines the reliability of using kinetic models in performance projections for plants operated under ambient non-isothermal conditions. This study develops a ...
    • Carbon Intensity Indicator 

      Alex, Aron (Bachelor thesis, 2022)
      Klimaendringer er i ferd med å bli et alvorlig problem for kloden og verdensnasjoner har derfor kommet til felles enighet om å redusere klimagassutslipp for å begrense global oppvarming. Avtalen er nå kjent som Parisavtalen, ...
    • A Cascaded Heading Control Design With Motion Constraint Handling for Marine Surface Vessels 

      Kjerstad, Øivind Kåre; Coates, Erlend Magnus Lervik (Journal article, 2023)
      Maritime motion control systems traditionally employ proportional-integral-derivative (PID) feedback control combined with a model-based feedforward structure for heading control. However, such control designs often suffer ...
    • Central Heating System Design 

      Haakenstad, Kildal Sindre; Omholt, Victoria (Bachelor thesis, 2023)
      Sentralvarmesystemet ombord et servicefartøy er et system som henter overskuddsvarme fra motorene samt produserer varme i en oljefyrt kjel og leverer den til ulike forbrukere. I denne oppgaven utforskes potensialet for å ...
    • CERP: A Maritime Cyber Risk Decision Making Tool 

      Erstad, Erlend; Hopcraft, R.; Palbar, J.D.; Tam, K. (Peer reviewed; Journal article, 2023)
      ABSTRACT: An increase in the complexity of systems onboard ships in the last decade has seen a rise in the number of reported maritime cyber-attacks. To tackle this rising risk the International Maritime Organization ...
    • CFD Based Optimization of Surface-Piercing V-foils 

      Labate, Carolina Vanesa (Master thesis, 2020)
      Målet med denne masteroppgaven var å få en grundig forståelse av rullebevegelsen til en overflateskjærende hydrofoil båt. For å gjøre dette to NACA foil profiler ble valgt til å bli testet i et fram foil V-formet konfigurasjon. ...
    • CFD investigation in scale effects on propellers with different blade area ratio 

      Chen, Zicheng (Master thesis, 2015)
      The performance prediction of marine propulsor has long been assessed by means of model test. Due to the larger difference in Reynolds number between model and full scale, the traditional extrapolation of measured force ...
    • Challenges and solutions related to communication in the Arctic Ocean 

      Söderberg, Fredrik; Johansen, Hans Jørgen Mora; Nieminen, Erno Elmer (Bachelor thesis, 2015)
      The aim of this bachelor’s thesis is to discuss the problems related to communication in the Arctic and to present solutions that are used on board the vessels and offshore installations operating in the area today. We ...
    • CHALLENGES FOR THE TANKER SEGMENT AFTER SANCTIONS AGAINST RUSSIA 

      Engebretsen, Anders (Bachelor thesis, 2022)
      Målet med oppgaven er å avdekke hvordan tankmarkedet har blitt påvirket av de nylig innførte sanksjonene mot Russland. Oppgaven bygger på fire hypoteser og bruker både eksterne kilder og intervjuer med relevante industripersoner ...
    • Challenges when creating a cohesive digital twin ship: a data modelling perspective 

      Fonseca, Icaro Aragao; Gaspar, Henrique Murilo (Peer reviewed; Journal article, 2021)
      A digital twin is a digital asset that simulates the behaviours of a physical counterpart. Digital twin ship literature identifies that the concept is already being applied to specialised problems, but no clear guide exists ...
    • Challenges with sea ice action on structures for Offshore wind 

      Høyland, Knut Vilhelm; Nord, Torodd Skjerve; Hendrikse, Hayo; Tuhkuri, Jukka; Polojärvi, Arttu; von Bock und Polach, Franz; Heinonen, Jaakko; Eik, Kenneth Johannessen; Teigen, Sigurd Henrik; Serré, Nicolas; schumann, björn; Granlund, Victor; von Borstel, Thomas; Reimer, Nils; Haase, Andrea; Sjöblom, Anna (Peer reviewed; Journal article, 2023)
      EU urgently needs to increase the development of secure and green energy, and this includes renewables such as Offshore wind energy. An expansion of Offshore wind will include the Baltic where sea ice is one of the major ...
    • Chasing the Perfect Rudder Angle – Evaluating the feasibility of a decision support system. A pilot study. 

      Dimmen, Kjetil; Næss, Bjørn; Nääs, Olle (Bachelor thesis, 2020)
      Formålet med denne Bacheloroppgaven var å gjøre en pilotstudie for å teste en hypotese basert på at et hjelpeprogram kan bistå i å øke sikkerhet under navigering. For å kunne gjøre dette måtte et hjelpeprogram bygges og ...
    • CII og EEXI 

      Moger, Olav Bredesen (Bachelor thesis, 2022)
      Bacheloroppgaven skal ta for seg hvordan CII og EEXI vil komme til å påvirke befraktere. Med utgangspunkt i dette har det blitt utarbeidet en problemstilling som blir støttet opp av fire forskjellige hypoteser, som hver ...
    • Climate-driven QMRA model for selected water supply systems in Norway accounting for raw water sources and treatment processes 

      Mohammed, Hadi; Seidu, Razak (Peer reviewed; Journal article, 2019)
      Formulating effective management intervention measures for water supply systems requires investigation of potential long-term impacts. This study applies an integrated multiple regression, random forest regression, and ...
    • Cloud Computing and IoT Based Intelligent Monitoring System for Photovoltaic Plants Using Machine Learning Techniques 

      Aghaei, Mohammadreza (Peer reviewed; Journal article, 2022)
      This paper proposes an Intelligent Monitoring System (IMS) for Photovoltaic (PV) systems using affordable and cost-efficient hardware and also lightweight software that is capable of being easily implemented in different ...
    • A Co-operative Hybrid Model For Ship Motion Prediction 

      Skulstad, Robert; Li, Guoyuan; Fossen, Thor I.; Wang, Tongtong; Zhang, Houxiang (Peer reviewed; Journal article, 2021)
      Dynamic models of ships have been widely used for model-based control and short-term prediction in the past. Identifying the parameters of such models has mainly been done through scaled model tests, full scale tests or ...
    • Co-simulation as a Fundamental Technology for Twin Ships 

      Hatledal, Lars Ivar; Skulstad, Robert; Li, Guoyuan; Styve, Arne; Zhang, Houxiang (Peer reviewed; Journal article, 2020)
      The concept of digital twins, characterized by the high fidelity with which they mimic their physical counterpart, provide potential benefits for the next generation of advanced ships. It allows analysis of data and ...
    • Co-simulation-based Pre-training of a Ship Trajectory Predictor 

      Kanazawa, Motoyasu; Hatledal, Lars Ivar; Li, Guoyuan; Zhang, Houxiang (Chapter, 2022)
      A ship trajectory predictor plays a key role in the predictive decision making of intelligent marine transportation. For better prediction performance, the biggest technical challenge is how we incorporate prior knowledge, ...
    • A Co-simulation-Based System Using Vico for Marine Operation 

      Liu, Zizheng; Chu, Yingguang; Li, Guoyuan; Zhang, Houxiang (Chapter, 2023)
      Marine operations are becoming more and more demanding. Efficient modeling and analysis of marine operations under environmental effects, especially in high sea states, will provide a means to improve operational safety. ...