Browsing Det matematisknaturvitenskapelige fakultet by Title
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(Research report / Forskningsrapport, 1976)

(Research report / Forskningsrapport, 2011)We prove an existence and uniqueness result for nonlinear timeadvanced backward stochastic partial di erential equations with jumps (ABSPDEJs). We then apply our results to study a timeadvanced backward type of stochastic ...

(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)The Fe i 6173 Å line is widely used in the measurements of vector magnetic fields by instruments including the Helioseismic and Magnetic Imager (HMI). We perform nonlocal thermodynamic equilibrium calculations of this ...

(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2017)Our ability to model the shapes and strengths of iron lines in the solar spectrum is a critical test of the accuracy of the solar iron abundance, which sets the absolute zeropoint of all stellar metallicities. We use an ...

(Master thesis / Masteroppgave, 2013)The existence of dark energy in the universe is hypothesized to explain the accelerated expansion of today’s universe and the inflationary expansion of very early universe; accelerated expansion of today’s universe is ...

(Journal article / Tidsskriftartikkel / AcceptedVersion; Peer reviewed, 2018)

(Research report / Forskningsrapport, 1979)

(Master thesis / Masteroppgave, 2009)

(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2018)External nonuniform magnetic fields acting on molecules induce noncollinear spin densities and spinsymmetry breaking. This necessitates a general twocomponent Pauli spinor representation. In this paper, we report the ...

(Journal article / Tidsskriftartikkel / PublishedVersion; Peer reviewed, 2020)Background Nonprescription purchase of antibiotics is undesirable and has not recently been investigated in a representative population in a highincome lowuse country during travel abroad. This study examined ...

(Research report / Forskningsrapport, 1998)

(Research report / Forskningsrapport, 2002)It is well known that a wide range of impulse control problems are continuous, but not differentiable, with respect to intervention cost as it approaches zero. We show a similar nonC1 result, assuming that the problem and ...

(Master thesis / Masteroppgave, 2018)The geometric model, Higherdimensional automata (HDA), is a useful and general model for noninterleaving concurrency. In a noninterleaving approach to concurrency, more than one event may happen concurrently and one ...

(Doctoral thesis / Doktoravhandling, 2018)A simplicial set is said to be nonsingular if its nondegenerate simplices are embedded. Let sSet denote the category of simplicial sets. We prove that the full subcategory nsSet whose objects are the nonsingular simplicial ...

(Research report / Forskningsrapport, 2003)Structural frame systems may be analyzed and designed based on forces from conventional first order theory when second order effects of axial forces on displacements in the compression members of the system are negligible. ...

(Research report / Forskningsrapport, 2003)Structural frame systems may be analyzed and designed based on forces from conventional first order theory when second order effects of axial forces on displacements in the compression members of the system are negligible. ...

(Research report / Forskningsrapport, 2004)In the following essay we shall describe models for the theory MINPAR, the theory for finite binary trees, described in Jervell [2003]. In particular we shall investigate nonstandard models simpler than the one presented ...

(Research report / Forskningsrapport, 1980)

(Research report / Forskningsrapport, 1998)We show that the stable AFalgebras defined by two square primitive nonsingular incidence matrices with nonnegative integer matrix elements may be isomorphic even though no powers of the associated automorphisms of the ...

NonStationary MixedFrequency Variables in Time Series Models: A New Design ApproachRestricted Access (Master thesis / Masteroppgave, 2013)Mixedfrequency variables may encounter problems of nonguaranteed steadystate in timevariant statespace system during temporal disaggregation, forecasting or nowcasting. The instability of statespace system directly ...