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Nature and calculations

Xem 1-6 trên 6 kết quả Nature and calculations
  • In this paper, an analytical method is proposed for calculation of natural frequencies of a delaminated composite beam from both free and constrained mode frequencies. In previous studies, the frequencies of a delaminated composite beam were computed with assumption of occurring open or close delamination during the vibration.

    pdf8p tohitohi 19-05-2020 19 1   Download

  • Research objectives: The thesis is focused on hydraulic calculation of small drainage works across of road such as: (step cascades, steep slope, velocity of soil scouring at culvert outlets and scour at culvert outlets). So that, Proposed solutions and selection methods to reinforced or choose the mitigating energy method relevant with downstream culverts on the roads; find solutions for small drainage works across the road with terrain characteristics matching the natural environment conditions and climate in Laos.

    doc24p change03 06-05-2016 58 2   Download

  • Glycosylatedpolyenemacrolide antibiotics, as nystatins and amphotericins, are amphiphilic structures known to exert antifungal activity by disrupting the fungal cell membrane, leading to leakage of cellular materials, and cell death. This membrane disruption is strongly influenced by the presence and the exact nature of the membrane sterols.

    pdf9p research12 23-04-2013 39 2   Download

  • I prove a formula expressing the descendent genus g Gromov-Witten invariants of a projective variety X in terms of genus 0 invariants of its symmetric product stack S g+1 (X). When X is a point, the latter are structure constants of the symmetric group, and we obtain a new way of calculating the GromovWitten invariants of a point. 1. Introduction Let X be a smooth projective variety. The genus 0 Gromov-Witten invariants of X satisfy relations which imply that they can be completely encoded in the structure of a Frobenius manifold on the cohomology H ∗ (X, C). ...

    pdf42p noel_noel 17-01-2013 40 7   Download

  • We develop a framework for displaying the stable homotopy theory of the sphere, at least after localization at the second Morava K-theory K(2). At the prime 3, we write the spectrum LK(2) S 0 as the inverse limit of a tower of hF fibrations with four layers. The successive fibers are of the form E2 where F is a finite subgroup of the Morava stabilizer group and E2 is the second Morava or Lubin-Tate homology theory. We give explicit calculation of the homotopy groups of these fibers.

    pdf47p noel_noel 17-01-2013 46 5   Download

  • In [27], we introduced Floer homology theories HF − (Y, s), HF ∞ (Y, s), HF (Y, s),and HFred (Y, s) associated to closed, oriented three-manifolds Y equipped with a Spinc structures s ∈ Spinc (Y ). In the present paper, we give calculations and study the properties of these invariants. The calculations suggest a conjectured relationship with Seiberg-Witten theory.

    pdf88p tuanloccuoi 04-01-2013 55 6   Download

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