Sökning: "Augmenting equations"

Hittade 5 avhandlingar innehållade orden Augmenting equations.

  1. 1. Parametric stability analyses for fluid-loaded thin membranes

    Författare :Yang Zhou; Anders Eriksson; Håkan Johansson; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Membranes; Hydro-static load; Multi-parametric loading; Bifurcations; Generalized path-following; Fold lines; Mesh eects; Augmenting equations; Generalized eigenproblem; Solution surface.; Engineering Mechanics; Teknisk mekanik;

    Sammanfattning : Membrane structures are commonly used in many elds. The studies of thesestructures are of increasing interest. The two projects focus on the evaluations ofequilibrium states for uid-pressurized membranes under dierent loading conditions,and the corresponding instability behavior. LÄS MER

  3. 2. The Klimontovich description of complex plasma systems : Low frequency electrostatic modes, spectral densities of fluctuations and collision integrals

    Författare :Panagiotis Tolias; Lars Blomberg; Carmine Castaldo; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; complex plasmas; dusty plasmas; Klimontovich equations; kinetic theory; dust acoustic waves; collision integrals;

    Sammanfattning : Plasmas seeded with solid particulates of nanometer to micron sizes (complex plasma systems) are a ubiquitous feature of intergalactic, interstellar and planetary environments but also of plasma processing applications or even fusion devices. Their novel aspects compared with ideal multi-component plasmas stem from (i) the large number of elementary charges residing on the grain surface, (ii) the variability of the charge over mass ratio of the dust component, (iii) the inherent openness and dissipative nature of such systems. LÄS MER

  4. 3. Model Error Compensation in ODE and DAE Estimators : with Automotive Engine Applications

    Författare :Erik Höckerdal; Erik Frisk; James Peyton-Jones; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Information technology; Informationsteknik; Automatic control; Reglerteknik;

    Sammanfattning : Control and diagnosis of complex systems demand accurate information of the system state to enable efficient control and to detect system malfunction. Physical sensors are expensive and some quantities are hard or even impossible to measure with physical sensors. This has made model-based estimation an attractive alternative. LÄS MER

  5. 4. Numerical instability investigations for thin membranes

    Författare :Yang Zhou; Anders Eriksson; Arne Nordmark; Reijo Kouhia; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : Membrane structures are commonly used in many fields. The studies of these structures are of increasing interest. The projects in this thesis focus on the evaluations of equilibrium states for pressurized membranes under different problem settings, using finite element methods, and the corresponding instability behaviors. LÄS MER

  7. 5. Enhancing P2P Systems over Wireless Mesh Networks

    Författare :Marcel Cavalcanti de Castro; Andreas Kassler; Edmundo Monteiro; Karlstads universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; peer-to-peer overlay; wireless mesh networks; peer selection; channel assignment; routing; optimization; adjacent channel interference; channel bandwidth adaptation; Datavetenskap; Computer Science;

    Sammanfattning : Due to its ability to deliver scalable and fault-tolerant solutions, applications based on the peer-to-peer (P2P) paradigm are used by millions of users on the internet. Recently, wireless mesh networks (WMNs) have attracted a lot of interest from both academia and industry, because of their potential to provide flexible and alternative broadband wireless internet connectivity. LÄS MER