Sökning: "maximum principle"

Visar resultat 6 - 10 av 74 avhandlingar innehållade orden maximum principle.

  1. 6. Topics in the mean-field type approach to pedestrian crowd modeling and conventions

    Författare :Alexander Aurell; Boualem Djehiche; Xiaoming Hu; Roland Malhamé; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; pedestrian crowds; stochastic differential equations; mean field; stochastic control; games; backward dynamics; sticky boundary; stochastic maximum principle; social conventions; folkmassor; stokastiska differentialekvationer; medelfält; stokastisk styrning; limaktiga randvillkor; stokastiska maximumprincipen; dynamik med ändvillkor; spel; konventioner;

    Sammanfattning : This thesis consists of five appended papers, primarily addressingtopics in pedestrian crowd modeling and the formation of conventions.The first paper generalizes a pedestrian crowd model for competingsubcrowds to include nonlocal interactions and an arbitrary (butfinite) number of subcrowds. LÄS MER

  3. 7. Resource Allocation under Uncertainty : Applications in Mobile Communications

    Författare :Mathias Johansson; Anders Ahlén; Mikael Sternad; Vikram Krishnamurthy; Uppsala universitet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Signalbehandling; resource allocation; uncertainty; probability theory as logic; scheduling; multiuser diversity; Jaynes; maximum entropy; Bayesian probability theory; Signalbehandling; Signal processing; Signalbehandling; Signal Processing; signalbehandling;

    Sammanfattning : This thesis is concerned with scheduling the use of resources, or allocating resources, so as to meet future demands for the entities produced by the resources. We consider applications in mobile communications such as scheduling users' transmissions so that the amount of transmitted information is maximized, and scenarios in the manufacturing industry where the task is to distribute work among production units so as to minimize the number of missed orders. LÄS MER

  4. 8. Affective disorders : multivariate investigations of clinical and biological variables

    Författare :Björn Wahlund; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :Affective disorders; psychiatric symptoms; classification; unipolardepression; bipolar disorder; cortisol; melatonin; monoamine oxidase; principle componentanalysis.;

    Sammanfattning : This thesis is a methodological and clinical investigation of patients with affective disorders. The goal of the study was to determine the extent to which biological and clinical measures may cluster clinical subpopulations. Analytical and statistical procedures were applied for this purpose. LÄS MER

  5. 9. Turbulent Swirl Flow Modeling for Combustor Applications

    Författare :Andrej V. Smirnov; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Numerical simulations of three-dimensional confined swirl flows in a combustion chamber geometry are carried out with improved turbulence and combustion models. In the first part of the work a comparative study of six turbulence models is done in application to swirl flow. LÄS MER

  7. 10. Necessary Optimality Conditions for Two Stochastic Control Problems

    Författare :Daniel Andersson; Boualem Djehiche; Tomas Björk; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Mathematical statistics; Matematisk statistik;

    Sammanfattning : This thesis consists of two papers concerning necessary conditions in stochastic control problems. In the first paper, we study the problem of controlling a linear stochastic differential equation (SDE) where the coefficients are random and not necessarily bounded. We consider relaxed control processes, i.e. LÄS MER