Now showing items 21-40 of 100

    • Discernibility and Rough Sets in Medicine: Tools and Applications 

      Øhrn, Aleksander (Dr. ingeniøravhandling, 0809-103X; 1999:133, Doctoral thesis, 2000)
      This thesis examines how discernibility-based methods can be equipped to posses several qualities that are needed for analyzing tabular medical data, and how these models can be evaluated according to current standard ...
    • Distributed Energy Systems with Wind Power and Energy Storage 

      Korpås, Magnus (Doktoravhandlinger ved NTNU, 1503-8181; 2004:39, Doctoral thesis, 2004)
      The topic of this thesis is the study of energy storage systems operating with wind power plants. The motivation for applying energy storage in this context is that wind power generation is intermittent and generally ...
    • Distributed Generation - Power Electronic Converters, Communication and Control 

      Hoff, Erik Stjernholm (Doktoravhandlinger ved NTNU, 1503-8181; 2007:89, Doctoral thesis, 2007)
      This thesis tries to explain the changes in the control of power electronic converters that are possible by the use of communication. Many of the renewable energy sources such as photovoltaic panels are geographically ...
    • Domain Model-Centric Distributed Development: An approach to semantics-based change impact management 

      Strasunskas, Darijus (Doctoral Theses at NTNU, 1503-8181; 2006:12, Doctoral thesis, 2006)
      Today’s information systems engineering involves large number of stakeholders, wide geographical distribution and wide range of tools. Success in system engi-neering depends on effective human communication. Early understanding ...
    • Dynamical systems of interacting units: Information transport and higher order structures 

      Helvik, Torbjørn (Doktoravhandlinger ved NTNU, 1503-8181; 2006:1, Doctoral thesis, 2006)
      How can one model, characterize and analyse systems consisting of a large number of interacting units? This thesis addresses various related aspects of this issue using dynamical systems theory. The thesis is constituted ...
    • Effects of the Force Distribution in Dry Granular Materials 

      Bratberg, Ivar (Dr. ingeniøravhandling, 0809-103X; 2003:113, Doctoral thesis, 2004)
      This work concentrates on the force-network of dry granular materials. The dynamical and static properties of the force-network are studied through simulations and experiments. We study the structural properties of ...
    • Electrical Power Supply to Offshore Oil Installations by High Voltage Direct Current Transmission 

      Myhre, Jørgen Chr. (Dr. ingeniøravhandling, 0809-103X; 2001:24, Doctoral thesis, 2001)
      This study was initiated to investigate if it could be feasible to supply offshore oil installations in the North Sea with electrical power from land. A prestudy of alternative converter topologies indicated that the most ...
    • Encrypted Computation 

      Brekne, Tønnes (Dr.ingeniøravhandling, 0809-103X; 2001:67, Doctoral thesis, 2001)
      The ability to construct software, call it a functional ciphertext, which can be remotely executed in encrypted form as an entirely self-contained unit, has the potential for some interesting applications. One such application ...
    • Error-robust coding and transformation of compressed hybered hybrid video streams for packet-switched wireless networks 

      Halbach, Till (Doktoravhandlinger ved NTNU, 1503-8181; 2004:84, Doctoral thesis, 2004)
      This dissertation considers packet-switched wireless networks for transmission of variable-rate layered hybrid video streams. Target applications are video streaming and broadcasting services. The work can be divided into ...
    • Estimation and Correction of Aberration in Medical Ultrasound Imaging 

      Måsøy, Svein-Erik (Doktoravhandlinger ved NTNU, 1503-8181; 2004:157, Doctoral thesis, 2004)
      The work presented in this thesis is devoted to studying aberration in ultrasound medical imaging, and to provide methods for correcting aberration of ultrasound signals in order to obtain optimum image quality. The thesis ...
    • Explanation Awareness and Ambient Intelligence as Social Technologies 

      Cassens, Jörg (Doctoral Theses at NTNU, 1503-8181; 2008:119, Doctoral thesis, 2008)
      This work focuses on the socio-technical aspects of artificial intelligence, namely how (specific types of) intelligent systems function in human workplace environments. The goal is first to get a better understanding of ...
    • Feature Extraction for Automatic Speech Recognition in Noisy Acoustic Environments 

      Gajic, Bojana (Dr. ingeniøravhandling; 2002:60, Doctoral thesis, 2002)
      This thesis presents a study of alternative speech feature extraction methods aimed at increasing robustness of automatic speech recognition (ASR) against additive background noise. Spectral peak positions of speech ...
    • Fiber DFB Lasers for Sensor Applications 

      Rønnekleiv, Erlend (Dr. ingeniøravhandling, 0809-103X; 1999:136, Doctoral thesis, 2000)
    • Frame based signal representation and compression 

      Engan, Kjersti (Dr. ingeniøravhandling, 0809-103X; 2000:65, Doctoral thesis, 2000)
      The demand for efficient communication and data storage is continuously increasing and signal representation and compression are important factors in digital communication and storage systems. This work deals with Frame ...
    • Fully automatic real-time ejection fraction and MAPSE measurements in 2D echocardiography using deep neural networks 

      Smistad, Erik; Østvik, Andreas; Salte, Ivar Mjåland; Leclerc, Sarah; Bernard, Olivier; Løvstakken, Lasse (Journal article; Peer reviewed, 2018)
      Cardiac ultrasound measurements such as left ventricular volume, ejection fraction (EF) and mitral annular plane systolic excursion (MAPSE) are time consuming and highly observer dependent. In this work, we investigate if ...
    • Hardware-accelerated analysis of non-protein-coding RNAs 

      Snøve Jr., Ola (Doktoravhandlinger ved NTNU, 1503-8181; 2005:196, Doctoral thesis, 2005)
      A tremendous amount of genomic sequence data of relatively high quality has become publicly available due to the human genome sequencing projects that were completed a few years ago. Despite considerable efforts, we do not ...
    • Hochschild cohomology, complexity and support varieties 

      Bergh, Petter Andreas (Doktoravhandlinger ved NTNU, 1503-8181; 2006:234, Doctoral thesis, 2006)
      This PhD-thesis consists of the five papers - On the Hochschild (co)homology of quantum exterior algebras, to appear in Comm. Algebra, -Complexity and periodicity, Coll. Math. 104 (2006), no. 2, 169-191, -Twisted support ...
    • Implementing Hydropower Scheduling in a European Expansion Planning Model 

      Brovold, Sondre; Skar, Christian; Fosso, Olav B (Conference object; Journal article; Peer reviewed, 2014)
      A method for implementing an enhanced hydropower planning formulation in a long-term expansion planning model is proposed. The methodological framework involves assigning hydropower generation a marginal cost through water ...
    • Improved Receivers for Digital High Frequency Communications: Iterative Channel Estimation, Equalization, and Decoding (Adaptive Turbo Equalization) 

      Otnes, Roald (Dr. ingeniøravhandling, 0809-103X; 2002:128, Doctoral thesis, 2002)
      We address the problem of improving the throughput and the availability of digital communications in the High Frequency (HF, 3-30 MHz) band. In standardized military waveforms, the data is protected by an error-correcting ...
    • Incremental Evolutionary Methods for Automatic Programming of Robot Controllers 

      Petrovic, Pavel (Doktoravhandlinger ved NTNU, 1503-8181; 2007:228, Doctoral thesis, 2007)
      The aim of the main work in the thesis is to investigate Incremental Evolution methods for designing a suitable behavior arbitration mechanism for behavior-based (BB) robot controllers for autonomous mobile robots performing ...