Fakultet for informasjonsteknologi og elektroteknikk (Uspesifisert): Nye registreringer

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    • Optical fibers with periodic structures 

      Haakestad, Magnus W. (Doktoravhandlinger ved NTNU, 1503-8181; 2006:48, Doctoral thesis, 2006)
      This thesis concerns some experimental and theoretical issues in fiber optics. In particular, properties and devices based on photonic crystal fibers (PCFs) are investigated. The work can be grouped into three parts. In ...

    • 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 ...

    • 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 ...

    • Cantor minimal systems and AF-equivalence relations 

      Dahl, Heidi (Doktoravhandlinger ved NTNU, 1503-8181; 2008:54, Doctoral thesis, 2008)

    • Three-Dimensional Radio Channel Modeling for Mobile Communications Systems 

      Pettersen, Magne (Dr. ingeniøravhandling, 0809-103X; 2001:89, Doctoral thesis, 2001)
      The work described in this report is within the area of three-dimensional (3D) radio channel modeling for mobile communications. The focus was towards rural areas, because radio coverage of rural areas is more costly when ...

    • 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. ...

    • Coordinated Control of Marine Craft 

      Ihle, Ivar-Andre Flakstad (Doctoral Theses at NTNU, 1503-8181; 2006:164, Doctoral thesis, 2006)
      This thesis contains new results on the problem of coordinating a group of vehicles. The main motivation driving this work is the development of control laws that steer individual members of a formation, such that desired ...

    • A Framework for Speech Recognition using Logistic Regression 

      Birkenes, Øystein (Doktoravhandlinger ved NTNU, 1503-8181; 2007:165, Doctoral thesis, 2007)
      Although discriminative approaches like the support vector machine or logistic regression have had great success in many pattern recognition application, they have only achieved limited success in speech recognition. Two ...

    • Suggested Methods for Preventing Core Saturation Instability in HVDC Transmission Systems 

      Norheim, Ian (Dr. ingeniøravhandling, 0809-103X; 2002:15, Doctoral thesis, 2002)
      In this thesis a study of the HVDC related phenomenon core saturation instability and methods to prevent this phenomenon is performed. It is reason to believe that this phenomenon caused disconnection of the Skagerrak HVDC ...

    • Decision Aid for Planning Local Energy Systems: Application of Multi-Criteria Decision Analysis 

      Catrinu, Maria (Doctoral Theses at NTNU, 1503-8181; 2006:62, Doctoral thesis, 2006)
      Planning is what sustains an energy system. It is a process of analysis and ongoing decision making about what resources and energy technologies to use when supplying energy to society. This research focuses on integrated ...

    • Performance engineering method for workflow systems : an integrated view of human and computerised work processes 

      Brataas, Gunnar (Dr. ingeniøravhandling, 0809-103X; 1996:62, Doctoral thesis, 1996)
      A method for designing workflow systems which satisfy performance requirements is proposed in this thesis. Integration of human and computerised performance is particularly useful for workflow systems where human and ...

    • Object Based Concurrency for Data Parallel Applications: Programmability and Effectiveness 

      Diaconescu, Roxana Elena (Dr.ingeniøravhandling, 0809-103X; 2002:83, Doctoral thesis, 2002)
      Increased programmability for concurrent applications in distributed systems requires automatic support for some of the concurrent computing aspects. These are: the decomposition of a program into parallel threads, the ...

    • 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 ...

    • Knowledge Management in Medium-Sized Software Consulting Companies 

      Dingsøyr, Torgeir (Dr. ingeniøravhandling, 0809-103X; 2002:10, Doctoral thesis, 2002)

    • OntoLog: Flexible Management of Semantic Video Content Annotations 

      Heggland, Jon (Doktoravhandlinger ved NTNU, 1503-8181; 2005:161, Doctoral thesis, 2005)
      To encode, query and present the semantic content of digital video precisely and flexibly is very useful for many kinds of knowledge work: system analysis and evaluation, documentation and education, to name a few. However, ...

    • A Voltage Instability Predictor Using Local Area Measurements 

      Warland, Leif (Dr. ingeniøravhandling, 0809-103X; 2002:21, Doctoral thesis, 2002)
      There has been a pressure to operate power systems closer to their security limits. This has partially been due to financial imperatives following the deregulating of markets. Other practical difficulties have been obtaining ...

    • Topics in nonlinear control.: Output Feedback Stabilization and Control of Positive Systems 

      Imsland, Lars (Dr. ingeniøravhandling, 0809-103X; 2002:112, Doctoral thesis, 2002)
      The contributions of this thesis are in the area of control of systems with nonlinear dynamics. The thesis is divided into three parts. The two first parts are similar in the sense that they both consider output feedback ...

    • New Doppler-Based Imaging Methods in Echocardiography with Applications in Blood/Tissue Segmentation 

      Hovda, Sigve (Doktoravhandlinger ved NTNU, 1503-8181; 2007:93, Doctoral thesis, 2007)
      Part 1: The bandwidth of the ultrasound Doppler signal is proposed as a classification function of blood and tissue signal in transthoracial echocardiography of the left ventricle. The new echocardiographic mode, Bandwidth ...

    • Practical Thermal and Electrical Parameter Extraction Methods for Modelling HBT´s and their Applications in Power Amplifiers 

      Olavsbråten, Morten (Dr. ingeniøravhandling, 0809-103X; 2003:20, Doctoral thesis, 2003)
      A new practical technique for estimating the junction temperature and the thermal resistance of an HBT was developed. The technique estimates an interval for the junction temperature. The main assumption in the new technique ...

    • Macromodelling of Microsystems 

      Westby, Eskild R. (Doktoravhandlinger ved NTNU, 1503-8181; 2004:66, Doctoral thesis, 2004)
      The aim of this work has been to develop new knowledge about macromodelling of microsystems. Doing that, we have followed two different approaches for generating macromodels, namely model order reduction and lumped modelling. ...