Sökning: "darwin"

Visar resultat 1 - 5 av 19 avhandlingar innehållade ordet darwin.

  1. 1. That voice sounds familiar : factors in speaker recognition

    Författare :Erik J. Eriksson; Kirk P. H. Sullivan; Christopher Darwin; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; speaker recognition; accent; emotions; hearing; spectral moments; formant transitions; dialect; Cognitive science; Kognitionsvetenskap;

    Sammanfattning : Humans have the ability to recognize other humans by voice alone. This is important both socially and for the robustness of speech perception. This Thesis contains a set of eight studies that investigates how different factors impact on speaker recognition and how these factors can help explain how listeners perceive and evaluate speaker identity. LÄS MER

  2. 2. Controlling virulence in Yersinia pseudotuberculosis through accumulation of phosphorylated CpxR

    Författare :Edvin Thanikkal; Matthew Francis; Andrew Darwin; Umeå universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; Y. pseudotuberculosis; CpxA; CpxR; invasin; RovA; RovM; T3SS; virulence; transcriptional regulation; molekylärbiologi; Molecular Biology; mikrobiologi; Microbiology;

    Sammanfattning : Like many Gram-negative bacteria, the food-borne pathogen Yersinia pseudotuberculosis harbours different regulatory mechanisms to maintain an intact bacterial envelope especially during exposure to extracytoplasmic stress (ECS). The CpxA-CpxR two component regulatory system is one such ECS-responsive regulatory mechanism. LÄS MER

  3. 3. Stellar Winds of Cool Giants : Investigating the Mass-Loss Mechanism of AGB Stars

    Författare :Sofie Liljegren; Susanne Höfner; Kjell Eriksson; Bernd Freytag; Hans Olofsson; Uppsala universitet; []
    Nyckelord :NATURAL SCIENCES; NATURVETENSKAP; NATURVETENSKAP; NATURAL SCIENCES; late-type stars; AGB stars; stellar winds; stellar atmospheres; dust; stellar pulsation; hydrodynamics; radiative transfer;

    Sammanfattning : Asymptotic giant branch (AGB) stars are luminous cool giants of low to intermediate mass that are strongly pulsating and non-spherical, with heavy mass loss through a stellar wind. The mass loss makes these stars important for galactic chemistry, as the wind enriches the interstellar medium with new elements and dust, and it determines the final fate of these stars. LÄS MER

  4. 4. Heavy Metal Compounds and Hydrogen Storage Materials from Ab Initio Calculations

    Författare :Weiwei Sun; Rajeev Ahuja; Ali Zaoui; KTH; []

    Sammanfattning : In principle, most of the properties of solids can be determined by their electronic structures. So the understanding of electronic structures is essential. This thesis presents two classes of materials using ab initio method based on density functional theory. LÄS MER

  5. 5. The economic point of view : A defence of the concept of psychic energy, its place in theory and practic

    Författare :Christer Forsberg; Institutionen för psykologi; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; libido; psychic energy; motivation; mind body relation; consciousness; psychosomatics; darwinism; death drive; Psychology; Psykologi; Psykologi;

    Sammanfattning : This thesis purports to prove the logical necessity of the psychic energy concept discarded by modern psychoanalysis by linking the "evolutionistic argument" against epiphenomenalism to Brillouin´s negentropy principle. If our conscious awareness of affects and other psychological events should be attributed a signal value at all, they must necessarily exercise effect on the soma. LÄS MER