Sökning: "restricted"

Visar resultat 1 - 5 av 1535 avhandlingar innehållade ordet restricted.

  1. 1. On-demand Restricted Delegation : A Framework for Dynamic, Context-Aware, Least-Privilege Delegation in Grids

    Författare :Mehran Ahsant; Lennart Johnsson; Marty Humphrey; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Grid Security; Restricted and Context-Aware Delegation; Delegation Protocol; On-demand Delegation; Dynamic Trust Federation; Grid Interoperability; Credential Mapping; Computer science; Datalogi;

    Sammanfattning : In grids, delegation is a key facility that can be used to authenticate and authorize requests on behalf of disconnected users. In current grid systems,delegation is either performed dynamically, in an unrestricted manner, or by a secure but static method. LÄS MER

  3. 2. Synthesis of Conformationally Restricted Oligosaccharides

    Författare :Michael Wilstermann; Centrum för analys och syntes; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Streptococcus suis; E. coli; neoglycolipid; ganglioside-lactam; xylose; methylene acetal; sialic acid; Conformational Restriction; galabiose; Organic chemistry; Organisk kemi;

    Sammanfattning : Gangliosides are sialic acid-containing glycosphingolipids that often are present in increased amounts on tumor cells. Since the gangliosides are hydroxy-acids, they can form lactones. The lactones have been suspected to be more immunogenic than the open forms, but are in practise poor immunogens due to their ease of hydrolysis. LÄS MER

  4. 3. Restricted convection-diffusion across capillary walls

    Författare :Bo Åberg; Uppsala universitet; []
    Nyckelord :MEDICINE; MEDICIN;

    Sammanfattning : .... LÄS MER

  5. 4. The evolution of flat periwinkles Littorina fabalis and L. obtusata emhasizing mitochondrial introgression and restricted recombination

    Författare :Petri Kemppainen; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Speciation; Local adaptations; Ecotypes; Mitochondrial DNA; Introgression; Restricted recombination; Positive selection; Inversions; Chromosomal rearrangements;

    Sammanfattning : The evolution of species takes in general very long time and different mechanisms are likely to operate during the various stages of this process. Accordingly speciation should be studied at different levels of species divergence. LÄS MER

  7. 5. The tricritical ising model in restricted domains

    Författare :Per Fröjdh; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; conformal field theory; tricritical Ising model; correlation functions; finite-size scaling; multicritical phenomena;

    Sammanfattning : .... LÄS MER