Search for dissertations about: "characteristic sets"

Showing result 1 - 5 of 31 swedish dissertations containing the words characteristic sets.

  2. 1. Propagation of singularities for pseudo-differential operators and generalized Schrödinger propagators

    Author : Karoline Johansson; Joachim Toft; Anders Olofsson; Linnéuniversitetet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Banach spaces; Fourier; Generalized time-dependent Schrödinger equation; Micro-local; Modulation spaces; Non-tangential convergence; Pseudo-differential operators; Regularity; Wave-front sets; Banachrum; Fourier; Generaliserad tidsberoende Schrödinger ekvation; Icke-tangentiell konvergens; Mikrolokal; Modulationsrum; Pseudodifferentialoperatorer; Regularitet; Vågfrontsmängder; Mathematical analysis; Analys; Mathematics; Matematik;

    Abstract : In this thesis we discuss different types of regularity for distributions which appear in the theory of pseudo-differential operators and partial differential equations. Partial differential equations often appear in science and technology. READ MORE

  4. 2. Constructive Methods for Inequality Constraints in Control

    Author : Mats Jirstrand; Torkel Glad; Per-Olof Gutaman; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : In practical control problems there are always constraints on inputs and system variables. The constraints are often described by inequalities and there is a need for methods that take them into account. This thesis consists of three parts. READ MORE

  5. 3. Algebraic Methods for Modeling and Design in Control

    Author : Mats Jirstrand; Torkel Glad; Linköpings universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Computer algebra or symbolic computation has been recognized as an important tool in many engineering disciplines and continues to find new fields of application. In this thesis we investigate a number of constructive methods implemented as parts of computer algebra packages and utilize them both theoretically and practically in connection with problems in modeling and design of control systems. READ MORE

  6. 4. Structurally Informed Architectural Design

    Author : Laurens Luyten; Chalmers tekniska högskola; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; HUMANIORA; HUMANITIES; architect; structural engineer; architectural design; structural design; conceptual design; design collaboration;

    Abstract : Architectural form and its supporting structure are results of interdependent design processes that do not always develop in harmony: often major outlines of architectural form are decided before structural design is involved. This doctoral work investigates design collaborations between architects and structural engineers in which architecture and structure are designed in mutual agreement, and structural design is able to guide and inspire a creation of architectural form and space. READ MORE

  7. 5. Testing and modelling of silty and sulphide-rich soils

    Author : Yao Yu; Luleå tekniska universitet; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Soil Mechanics; Geoteknik;

    Abstract : Silt and sulphide soil are two types of soil which are dominating in northern Sweden, especially in the coast area of the Baltic sea. The stress-strain and strength characteristics of these two soils have so far not been as much explored as those for e.g. Scandinavian clays. READ MORE