Sökning: "formulae"

Visar resultat 1 - 5 av 75 avhandlingar innehållade ordet formulae.

  1. 1. Summation formulae and zeta functions

    Författare :Johan Andersson; Mikael Passare; Aleksandar Ivic; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; zeta function; summation formula; automorphic form; modular group; Kloosterman sum; Selberg theory; power sum method; MATHEMATICS; MATEMATIK;

    Sammanfattning : This thesis in analytic number theory consists of 3 parts and 13 individual papers.In the first part we prove some results in Turán power sum theory. We solve a problem of Paul Erdös and disprove conjectures of Paul Turán and K. Ramachandra that would have implied important results on the Riemann zeta function. LÄS MER

  3. 2. Learning Idiomaticity : A Corpus-Based Study of Idiomatic Expressions in Learners' Written Production

    Författare :Maria Wiktorsson; Engelska; []
    Nyckelord :HUMANIORA; HUMANITIES; corpus linguistics; idiom principle; open choice principle; construction grammar; compositionality; conventionalisation; idiom; formulae; collocation; prefab; Swedish learners of English; L2; Idiomaticity; L1; English language and literature; Engelska språk och litteratur ; Linguistics; Lingvistik;

    Sammanfattning : The aim of this study is to investigate how Swedish learners of English (at different levels of proficiency) master idiomaticity in their target language. I argue that idiomaticity can be related to the storage and use of multi-word expressions that are preferred by native speakers. LÄS MER

  4. 3. Trace Formulae for Fourth Order Differential Operators and their Applications

    Författare :Jörgen Östensson; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : Paper I. Trace Formulae and Spectral Properties of FourthOrder Differential Operators.We derive trace formulae forfourth order differential operators in dimension one anddiscuss their connection with sharp Lieb-Thirring inequalitiesfor the Riesz means of negative eigenvalues of order γ≥ 7/4. LÄS MER

  5. 4. Generalised Campbell formulae for compound Poisson processes with applications in nuclear safeguards

    Författare :Lajos Nagy; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; passive non-destructive assay; fissile material assay; multiplicity counting;

    Sammanfattning : Multiplicity counting is a widely used non-destructive assay method for estimating unknown parameters (primarily the mass) of samples of spontaneously fissioning materials (e.g. plutonium). Traditionally, measurements are performed with thermal neutron detectors operating in pulse counting mode. LÄS MER

  7. 5. Development and Investigation of Reactivity Measurement Methods in Subcritical Cores

    Författare :Johanna Wright; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; source modulation method; point kinetics; core loading; reactivity measurement; Feynman-alpha formulae; Accelerator Driven Systems ADS ; subcritical cores;

    Sammanfattning : Subcriticality measurements during core loading and in future accelerator driven systems have a clear safety relevance. In this thesis two subcriticality methods are treated: the Feynman-alpha and the source modulation method. LÄS MER