Sökning: "OCTOPUS"

Hittade 4 avhandlingar innehållade ordet OCTOPUS.

  1. 1. Potential Flow Panel Methods for the Calculation of Free-surface Flows with Lift

    Författare :Carl-Erik Janson; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; desingularized; shape optimization; Rankine source; waves; OCTOPUS; dipole; MMA; Dawson operator; boundary layer; vortex; Method of Moving Asymptotes; nonlinear; sailing yacht; four point operator; surface piercing wing; Navier-Stokes; numerical method; lift force; raised panel method; discrete Fourier transform; collocation point shift; potential flow; CFD; free surface; induced drag; SHIPFLOW; dispersion; damping; analytical method; hydrofoil;

    Sammanfattning : Two non-linear Rankine-source panel methods are developed and implemented in the same computer code. The first method uses a four-point upwind operator on the free-surface to compute the velocity derivatives and to enforce the radiation condition while the second method uses an analytical expression for the velocity derivatives and a collocation point shift one panel upstream to prevent upstream waves. LÄS MER

  3. 2. Formalizing life : Towards an improved understanding of the sequence-structure relationship in alpha-helical transmembrane proteins

    Författare :Håkan Viklund; Arne Elofsson; Kimmen Sjölander; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; bioinformatics; protein; topology; hidden Markov model; prediction; Bioinformatics; Bioinformatik; Biochemistry; biokemi;

    Sammanfattning : Genes coding for alpha-helical transmembrane proteins constitute roughly 25% of the total number of genes in a typical organism. As these proteins are vital parts of many biological processes, an improved understanding of them is important for achieving a better understanding of the mechanisms that constitute life. LÄS MER

  4. 3. Cellular correlates of sensory processing in the mammalian audio-vestibular brainstem

    Författare :Sara Leijon; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : Efferent projections to the vestibular inner ear organs have remained elusive. To shed light on their physiological role, a first investigation of the vestibular efferent (VE) neurons in the brainstem was undertaken by using a transgenic mouse which expresses a fluorescent marker in the VE neurons. LÄS MER

  5. 4. Händelsehorisont || Event Horizon. Distribuerad fotografi

    Författare :Cecilia Grönberg; Göteborgs universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; analogue photography; digital photography; distributed photography; decentralised strategies; photography; fotografisk gestaltning; publishing; media ecologies; the book as medium; montage; layers; visual historiography; alternative historiography; artistic research; event horizon;

    Sammanfattning : In recent decades, photography as a technology has undergone a series of transformative changes, which have, in turn, entailed different renegotiations of the functions of photography – as image or information, as inscription or transmission. Within the framework of such a radical shift, this dissertation in photography insists on probing into and exploring the persisting effects of analogue photographs within digital ecologies. LÄS MER