Sökning: "Strong stability preserving"

Hittade 4 avhandlingar innehållade orden Strong stability preserving.

  1. 1. Construction of Adaptive Multistep Methods for Problems with Discontinuities, Invariants, and Constraints

    Författare :Fatemeh Mohammadi; Numerisk analys; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; multistep methods; Initialization; beta-blocking; Discontinuity; Time adaptivity; Strong stability preserving; Differential algebraic equations;

    Sammanfattning : Adaptive multistep methods have been widely used to solve initial value problems. These ordinary differential equations (ODEs) may arise from semi-discretization of time-dependent partial differential equations(PDEs) or may combine with some algebraic equations to represent a differential algebraic equations (DAEs). LÄS MER

  2. 2. Acetylation of Solid Wood. Wood Properties and Process Development

    Författare :Pia Larsson Brelid; Chalmers University of Technology; []
    Nyckelord :microwave heating; deformation; wood; hardness; adhesive bonding; power penetration depth; shear strength; delamination; acetylation; pH; bending strength; dielectric properties; stability;

    Sammanfattning : The influence of acetylation on selected wood properties has been determined for Scandinavian pine and spruce wood, in order to predict the behavior of acetylated wood when it is used in different applications. Only minor differences in both bending strength and the modulus of elasticity were obtained for acetylated wood when compared with unmodified wood, and can, for practical applications, be considered unaltered. LÄS MER

  3. 3. Striderna i Rosenbad : Om trettio års försök att förändra Regeringskansliet

    Författare :Magnus Erlandsson; Rune Premfors; Shirin Ahlbäck Öberg; Stockholms universitet; []
    Nyckelord :SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; bureaucratic politics; political institutions; institutional change; institutional stability; public administration; government; political executive; state organisation; Political science; Statsvetenskap; Political Science; statsvetenskap;

    Sammanfattning : This dissertation examines the last thirty years of internal reforms in the Swedish Government Offices. Analysis of the evolution of personnel politics, the formation of one agency and the attempts to introduce a collective activity planning model, show that the immediate problems of the early 1970’s – an over dimensioned staff, territory battles and unclear division of responsibility for personnel and organisation – remains to this day, notwithstanding the many reforms to approach them. LÄS MER

  4. 4. Selective conversion of alcohols to aldehydes over metal oxide catalysts

    Författare :Mariano Massa; Institutionen för kemiteknik; []

    Sammanfattning : Nowadays, transition metal oxide catalysts are employed to a large extent in many chemical processes for the selective production of chemicals and intermediates. Although metal oxides are mostly known as oxidation catalysts, they can successfully catalyze a wide range of reactions, such as dehydration. LÄS MER