Sökning: "systemteori avhandling"

Visar resultat 1 - 5 av 27 avhandlingar innehållade orden systemteori avhandling.

  1. 1. Datorstöd i skrivandet: En longitudinell studie på grundskolan och gymnasieskolan

    Författare :Olof Lannér; Institutionen för informatik; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; upper secondary school; comprehensive school; gender perspective; attitude; quality of writing; Writing; word-processing; parent; Informatics; systems theory; Informatik; systemteori;

    Sammanfattning : This dissertation studies the effects that the use of a word-processing program can have on pupils' writing. The study was conducted with a consideration of the context in which the writing was done. It examined not just changes in the quality of the pupils' writing but also the attitudes of pupils, teachers, and parents to computer-aided writing. LÄS MER

  3. 2. Inverse and Forward Approaches for Optimal Control and Estimation in Agent-Based Systems

    Författare :Yibei Li; Xiaoming Hu; Per Enqvist; Bijoy Ghosh; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Autonomous systems; inverse optimal control; system identification; nonlinear systems; formation control; differential game; credit scoring.; Autonoma system; invers optimal styrning; system identifiering; olinjära system; formationsstyrning; differentialspel; kreditvärdering.; Optimeringslära och systemteori; Optimization and Systems Theory;

    Sammanfattning : This dissertation is concerned with three topics within the field of optimal control and estimation in dynamical agent-based systems, with potential applications that meet both engineering and societal needs. Firstly, the inverse optimal control problem is studied. LÄS MER

  4. 3. Radiation Therapy Patient Scheduling: An Operations Research Approach

    Författare :Sara Frimodig; Per Enqvist; Jan Kronqvist; Mats Carlsson; Willem-Jan van Hoeve; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Radiation therapy scheduling; patient scheduling; multi-appointment scheduling; operations research; integer programming; constraint programming; column generation; Schemaläggning; strålterapi; operationsanalys; heltalsprogrammering; villkorsprogrammering; kolumngenerering; Optimeringslära och systemteori; Optimization and Systems Theory;

    Sammanfattning : The manual scheduling of patients for radiation therapy is difficult and labor-intensive. With the increase in cancer patient numbers, efficient resource planning is an important tool to achieve short waiting times and equal right to care. This thesis studies an operations research approach to the radiation therapy scheduling problem. LÄS MER

  5. 4. Approaches to accelerate methods for solving systems of equations arising in nonlinear optimization

    Författare :David Ek; Anders Forsgren; Jacek Gondzio; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nonlinear optimization; mathematical programming; interior-point methods; approximate solutions to systems of linear equations; method of conjugate gradients; quasi-Newton methods; modified Newton methods; Ickelinjär optimering; matematisk programmering; inre-punktsmetoder; approximativa lösningar till linjära ekvationssystem; konjugerade gradientmetoden; kvasi-Newtonmetoder; modifierade Newtonmetoder.; Optimization and Systems Theory; Optimeringslära och systemteori;

    Sammanfattning : Methods for solving nonlinear optimization problems typically involve solving systems of equations. This thesis concerns approaches for accelerating some of those methods. In our setting, accelerating involves finding a trade-off between the computational cost of an iteration and the quality of the computed search direction. LÄS MER

  7. 5. Numerical methods for Sylvester-type matrix equations and nonlinear eigenvalue problems

    Författare :Emil Ringh; Elias Jarlebring; Johan Karlsson; Per Enqvist; Daniel Kressner; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Matrix equations; Lyapunov equation; Sylvester equation; nonlinear eigenvalue problems; two-parameter eigenvalue problems; Krylov methods; iterative methods; preconditioning; projection methods; Matrisekvationer; Lyapunovekvationen; Sylvesterekvationen; ickelinjära egenvärdesproblem; två-parameters egenvärdesproblem; Krylovmetoder; iterativa metoder; förkonditionering; projektionsmetoder; Tillämpad matematik och beräkningsmatematik; Applied and Computational Mathematics; Optimization and Systems Theory; Optimeringslära och systemteori; Numerical Analysis; Numerisk analys;

    Sammanfattning : Linear matrix equations and nonlinear eigenvalue problems (NEP) appear in a wide variety of applications in science and engineering. Important special cases of the former are the Lyapunov equation, the Sylvester equation, and their respective generalizations. These appear, e.g. LÄS MER