Sökning: "gradient"

Visar resultat 11 - 15 av 1260 avhandlingar innehållade ordet gradient.

  1. 11. Gradient Methods for Large-Scale and Distributed Linear Quadratic Control

    Författare :Karl Mårtensson; Institutionen för reglerteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Large-Scale Control; Distributed Control; Linear Quadratic Gaussian Control; Gradient method; Controller Synthesis;

    Sammanfattning : This thesis considers methods for synthesis of linear quadratic controllers for large-scale, interconnected systems. Conventional methods that solve the linear quadratic control problem are only applicable to systems with moderate size, due to the rapid increase in both computational time and memory requirements as the system size increases. LÄS MER

  3. 12. Gradient structures in cemented carbides

    Författare :Malin Ekroth; KTH; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  4. 13. Modelling spatial and temporal species distribution in the Baltic Sea phytobenthic zone

    Författare :Antonia Nyström Sandman; Hans Kautsky; Martin Isaeus; Georg Martin; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; species distribution modelling; niche; gradient; prediction; environmental factors; phytobenthos; scale; Marine ecology; Marin ekologi; Marine Ecology; marin ekologi;

    Sammanfattning : Statistical modelling is often used to relate the presence or abundance of species to environmental predictors, thereby providing a basis for predictive mapping of species or biodiversity. The variables included must thus be relevant and reflect actual changes in the environment. LÄS MER

  5. 14. The architecture of the aging brain : functional reorganization, structural changes, and the role of dopamine receptors

    Författare :Robin Pedersen; Alireza Salami; Anna Rieckmann; Anders Wåhlin; Lars Nyberg; Roser Sala-Llonch; Umeå universitet; []
    Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; brain architecture; functional connectivity; dopamine; aging; cognition; memory; functional magnetic resonance imaging; positron emission tomography; graph theory; Laplacian eigenmapping; gradient;

    Sammanfattning : Aging is associated with reorganization of functional brain architecture, potentially leading tocognitive decline in older age. However, the mechanisms responsible for alterations in functionalbrain architecture remain poorly understood. LÄS MER

  7. 15. Specification of the lens and olfactory placodes and dorsoventral patterning of the telencephalon

    Författare :My Sjödal; Juha Partanen; Umeå universitet; []
    Nyckelord :telencephalon; olfactory; lens; BMP; RA; FGF; Wnt; development; placode; gradient; chick; nervous system; dorsoventral; medicinsk utvecklings- och neurobiologi; Developmental Neurosciences;

    Sammanfattning : The vertebrate nervous system is a highly complex and intriguing structure with diverse functions. To understand the functional nervous system, we first have to be aware of how it is assembled during development. LÄS MER