Now showing items 26-45 of 100

    • 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 ...
    • Interactive Process Models 

      Jørgensen, Håvard D. (Doktoravhandlinger ved NTNU, 1503-8181; 2004:2, Doctoral thesis, 2004)
      Contemporary business process systems are built to automate routine procedures. Automation demands well-understood domains, repetitive processes, clear organisational roles, an established terminology, and predefined plans. ...
    • Joint Source-channel Coding: Development of Methods and Utilization in Image Communications 

      Coward, Helge (Dr. ingeniøravhandling, 0809-103X; 2001:76, Doctoral thesis, 2001)
      In a traditional communication system, the coding process is divided into source coding and channel coding. Source coding is the process of compressing the source signal, and channel coding is the process of error protection. ...
    • Knowledge Management in Medium-Sized Software Consulting Companies 

      Dingsøyr, Torgeir (Dr. ingeniøravhandling, 0809-103X; 2002:10, Doctoral thesis, 2002)
    • Knowledge Management in Software Process Improvement 

      Bjørnson, Finn Olav (Doktoravhandlinger ved NTNU, 1503-8181; 2007:152, Doctoral thesis, 2007)
      Reports of software a development projects that miss schedule, exceeds budget and deliver products with poor quality are abundant in the literature. Both researchers and the industry are seeking methods to counter these ...
    • Knowledge Representation for Relevance Ranking of Patient-Record Contents in Primary-Care Situations 

      Bayegan, Elisabeth (Dr. ingeniøravhandling, 0809-103X; 2002:144, Doctoral thesis, 2002)
      The computer-based patient-record system can play a significant role in physicians’ decision-making process by, for instance, presenting them with information they need from the record, relevant to care situations. However, ...