Sökning: "elliptic"

Visar resultat 16 - 20 av 80 uppsatser innehållade ordet elliptic.

  1. 16. Homogenization of an elliptic transmission system modeling the flux of oxygen from blood vessels to tissues

    Master-uppsats,

    Författare :Filippo Di Tillio; [2021]
    Nyckelord :;

    Sammanfattning : Motivated by the study of the hypoxia problem in cancerous tissues, we propose a system of coupled partial differential equations defined on a heterogeneous, periodically perforated  domain describing the flux of oxygen from blood vessels towards the tissue and the corresponding oxygen diffusion within the tissue. Using heuristics based on dimensional analysis, we rephrase the initially parabolic problem as a semi-linear elliptic transmission problem. LÄS MER

  3. 17. Silent Lure : A study of how Mīkhāʾīl Nuʿayma relates to and uses silence in his poems

    Kandidat-uppsats, Uppsala universitet/Institutionen för lingvistik och filologi

    Författare :Ronja Tallmyren; [2021]
    Nyckelord :;

    Sammanfattning : In this study I investigate how a mystic relates to and uses silence in poetry, as silence is a very important part of mysticism overall. I have focused on the Eastern Orthodox Christian mystic branch, which, in this thesis, is represented by the poet Mīkhāʾīl Nuʿayma from Lebanon. LÄS MER

  4. 18. Event Geometry and Anisotropic Flow in Proton-Proton Collisions

    Kandidat-uppsats, Lunds universitet/Teoretisk partikelfysik - Geonomgår omorganisation

    Författare :Johannes Holst; [2021]
    Nyckelord :high energy physics; particle physics; proton; collision; quark-gluon plasma; flow; anisotropy; anisotropic flow; elliptic flow; initial state; geometry; eccentricity; gaussian; cms; alice; lhc; Physics and Astronomy;

    Sammanfattning : We seek to better understand the relationship between an anisotropic distribution of partons in the initial state of pp-collisions and the amount of elliptic flow. We do this through the implementation of a new model that is based in generating positions for multiparton interactions from the uneven volume created by the overlap of two Gaussians. LÄS MER

  5. 19. Combating money laundering with machine learning : A study on different supervised-learning algorithms and their applicability at Swedish cryptocurrency exchanges

    Master-uppsats, KTH/Skolan för industriell teknik och management (ITM)

    Författare :Eric Pettersson Ruiz; [2021]
    Nyckelord :Machine learning; supervised-learning; money laundering; Swedish cryptocurrency exchanges; Maskininlärning; supervised-learning; penningtvätt; svenska kryptovalutaväxlare;

    Sammanfattning : In 2018, Europol (2018) estimated that more than $22 billion dollars were laundered in Europe by using cryptocurrencies. The Financial Action Task Force explains that moneylaunderers may exchange their illicitly gained fiat-money for crypto, launder that crypto by distributing the funds to multiple accounts and then re-exchange the crypto back to fiat-currency. LÄS MER

  7. 20. Pairing-Based Cryptography in Theory and Practice

    Kandidat-uppsats, Umeå universitet/Institutionen för matematik och matematisk statistik

    Författare :Hannes Salin; [2021]
    Nyckelord :cryptography; pairings; elliptic curves; algebra; provable security; algebraic geometry;

    Sammanfattning : In this thesis we review bilinear maps and their usage in modern cryptography, i.e. the theoretical framework of pairing-based cryptography including the underlying mathematical hardness assumptions. The theory is based on algebraic structures, elliptic curves and divisor theory from which explicit constructions of pairings can be defined. LÄS MER