Now showing items 1-20 of 316

    • 3D Computer Graphics and Nautical Charts 

      Porathe, Thomas (Chapter; Conference object; Peer reviewed, 2011)
      This paper gives an overview of an ongoing project using real-time 3D visualization to display nautical charts in a way used by 3D computer games. By displaying the map in an egocentric perspective the need to make cognitively ...
    • 3-D Nautical Charts as Decision Support for Land Based Piloting 

      Porathe, Thomas (Chapter; Peer reviewed, 2008)
      In the event that remote pilotage is introduced in a wider extent, this paper suggests using nautical charts displayed in a 3-D egocentric perspective to improve situation awareness for both for the land based pilot and ...
    • A 3D motion planning framework for snake robots 

      Liljebäck, Pål; Pettersen, Kristin Ytterstad; Stavdahl, Øyvind; Gravdahl, Jan Tommy (Chapter, 2014)
      This paper presents a motion planning framework for three-dimensional body shape control of snake robots. Whereas conventional motion planning approaches define the body shape of snake robots in terms of their individual ...
    • A case of dynamic risk management in the subarctic region 

      Paltrinieri, Nicola; Grøtan, Tor Olav; Bucelli, Marta; Landucci, Gabriele (Chapter; Conference object, 2017)
    • Achieving dependability in software-defined networking - a perspective 

      Helvik, Bjarne Emil; Heegaard, Poul Einar; Mendiratta, Veena (Chapter; Conference object; Peer reviewed, 2015)
      In this paper we take a closer look at the operationof software defined networking (SDN) in intra-domain networks.The focus is on the dependability issues related to interworking ofSDN controllers, network OS (NOS), and ...
    • A connectionless multicast protocol for MANETs 

      Thi Minh Do, Viet; Landmark, Lars; Kure, Øivind (2012 International Conference on Telecommunications and Multimedia (TEMU);, Chapter; Conference object; Peer reviewed; Journal article, 2012)
      In this paper, the connectionless multicast routing MCOM (Multipoint relay Connectionless Multicast) is introduced for mobile Ad hoc networks. MCOM adapts over a wide ranges of density of group members. It appears as unicast ...
    • A control scheme for utilizing energy storage of the modular multilevel converter for power oscillation damping 

      Taffese, Abel Assegid; Endegnanew, Atsede Gualu; de Jong, Erik (Chapter, 2017)
      This paper presents a control scheme that utilizes energy storage of the Modular Multilevel Converter (MMC) for Power Oscillation Damping (POD) service. Such a service is used to enhance grid stability by providing damping ...
    • Acoustic multipole sources from the Boltzmann equation 

      Viggen, Erlend Magnus (Chapter; Conference object; Peer reviewed, 2013)
      By adding a particle source term in the Boltzmann equation of kinetic theory, it is possible to represent particles appearing and disappearing throughout the fluid with a specified distribution of particle velocities. By ...
    • Adaptability 

      Geraedts, Rob; Olsson, Nils; Hansen, Geir Karsten (Chapter, 2017)
      Real estate is a product with a high economic value, a long technical life cycle and a large spatial-physical impact. That is why it is of great societal importance to use real estate as efficient as possible. To enable a ...
    • A Fault-Tolerant and Consistent SDN Controller 

      Kamisinski, Andrzej; Gonzalez, Andres Javier; Helvik, Bjarne Emil; Nencioni, Gianfranco (Chapter; Conference object; Peer reviewed, 2016)
      Software-Defined Networking (SDN) is a new paradigm that promises to enhance network flexibility and innovation. However, operators need to thoroughly assess its advantages and threats before they can implement it. Robustness ...
    • All in a day's work: Password cracking for the rest of us 

      Blakstad, Jørgen Wahl; Nergård, Rune; Jaatun, Martin Gilje; Gligoroski, Danilo (Chapter, 2009)
      The majority of computer systems are still protected primarily with a user name and password, and many users employ the same password on multiple systems. Additionally, some of the most popular operating systems such as ...
    • A Modified Dynamic Window Algorithm for Horizontal Collision Avoidance for AUVs 

      Eriksen, Bjørn-Olav Holtung; Breivik, Morten; Pettersen, Kristin Ytterstad; Syre Wiig, Martin (Chapter; Peer reviewed, 2016)
      Much research has been done on the subject of collision avoidance (COLAV). However, few results are presented that consider vehicles with second-order nonholonomic constraints, such as autonomous underwater vehicles (AUVs). ...
    • AMOS DP Research Cruise 2016: Academic full-scale testing of experimental dynamic positioning control algorithms onboard R/V Gunnerus 

      Skjetne, Roger; Sørensen, Mikkel Eske Nørgaard; Breivik, Morten; Værnø, Svenn Are Tutturen; Brodtkorb, Astrid H.; Sørensen, Asgeir Johan; Kjerstad, Øivind Kåre; Calabrò, Vincenzo; Vinje, Bjørn Ole (Chapter; Peer reviewed, 2017)
      In order to validate relevant dynamic positioning (DP) control algorithms in a realistic environment, a full-scale DP test campaign, the AMOS DP Research Cruise 2016 (ADPRC’16), was organized in a collaboration between the ...
    • A multi-body dynamic model based on bond graph for maritime hydraulic crane operations 

      Chu, Yingguang; Æsøy, Vilmar (Chapter; Peer reviewed, 2015)
      This paper presents a bond graph model of a maritime crane lifting system comprised of a 3DOFs crane with three revolute joints, a winch, a segment of wire, and a pendulum load. The multi-body model contains the dynamic ...
    • Analysis of the Effects of Earth Shadowing on GNSS Satellite Orbits 

      Preiss, George; Zubinaite, Vilma (International Conference on Environmental Engineering (ICEE);1867, Chapter; Peer reviewed, 2011)
      Precise positioning by GNSS might incur some error when one or more of the satellites that are being observed happen to be in Earth shadow – in eclipse. This effect might be worsened if the Earth is passing through a period ...
    • Analysis of the Information Needs for Existing Buildings for Integration in Modern BIM-Based Building Information Management 

      Godager, Bjørn Arild (International Conference on Environmental Engineering (ICEE);1867, Chapter; Peer reviewed, 2011)
      The challenge is to decide how to design a building information model (BIM) to support building maintenance and development for existing buildings. Until now the main BIM focus has been related to new projects, and this ...
    • An approach towards the design of robust arctic maritime transport systems 

      Bergström, Martin Vilhelm; Ehlers, Sören; Erikstad, Stein Ove (Maritime-Port Technology and Development;, Book; Chapter; Conference object; Peer reviewed, 2014)
      This paper describes a simulation-based approach towards the design of robust arctic maritime transport systems that are adaptable to uncertain future ice conditions. It makes it possible to simulate the performance of ...
    • An exact penalty-function approach to proactive fault-tolerant economic MPC 

      Knudsen, Brage Rugstad; Brusevold, Jon Håman; Foss, Bjarne Anton (Chapter; Conference object; Peer reviewed, 2017)
      This paper presents a fault-tolerant economic model predictive control scheme for proactive handling of incipient actuator faults. The scheme applies an L1 exact penalty function with a set of switching rules in order to ...
    • A Numerical Study on a Flopper Stopper for Leg Positioning of a Jack-Up Barge 

      Jiang, Zhiyu; Guachamin Acero, Wilson Ivan; Gao, Zhen; Li, Lin (Chapter; Peer reviewed, 2017)
      Jack-up barges are commonly used for marine operations in the offshore oil and gas, and offshore wind industries. A critical phase within the marine operation activities is the positioning of the jack-up legs onto the ...
    • A particle filter SLAM approach to online iceberg drift estimation from an AUV 

      Norgren, Petter; Skjetne, Roger (Chapter; Peer reviewed, 2017)
      Using autonomous underwater vehicles (AUVs) for mapping the underwater topography of sea-ice and icebergs, or detecting keels of ice ridges, is foreseen as an enabling technology in future Arctic offshore operations. This ...