Sökning: "Approximate solutions"

Visar resultat 1 - 5 av 106 avhandlingar innehållade orden Approximate solutions.

  1. 1. Preconditioners and fundamental solutions

    Författare :Per Sundqvist; Henrik Brandén; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Numerical Analysis; Numerisk analys;

    Sammanfattning : New preconditioning techniques for the iterative solution of systems of equations arising from discretizations of partial differential equations are considered. Fundamental solutions, both of differential and difference operators, are used as kernels in discrete, truncated convolution operators. LÄS MER

  3. 2. Approximate Dynamic Programming with Applications

    Författare :Andreas Wernrud; Institutionen för reglerteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Sammanfattning : This thesis studies approximate optimal control of nonlinear systems. Particular attention is given to global solutions and to the computation of approximately optimal feedback controllers. The solution to an optimal control problem is characterized by the optimal value function. LÄS MER

  4. 3. Explanation and deduction : a defence of deductive chauvinism

    Författare :Henrik Hållsten; Matti Sintonen; Stockholms universitet; []
    Nyckelord :HUMANIORA; HUMANITIES; Deductive explanation; Statistical explanation; Chances; Propensities; Probabilities; Sine qua non; Probabilistic causality; Indeterminism; Ideal explanatory text; Explanatory information; Explanatory sketches; Dynamic systems; Chaotic systems; Approximate solutions; Argument generating procedure. Central figures: Hempel; Coffa; Salmon; Railton; Humphreys; Kitcher; Poincaré; Suppes; Lorenz; Hénon.; Theoretical Philosophy; teoretisk filosofi;

    Sammanfattning : In this essay I defend the notion of deductive explanation mainly against two types of putative counterexamples: those found in genuinely indeterministic systems and those found in complex dynamic systems. Using Railton's notions of explanatory information and ideal explanatory text, deductivism is defended in an indeterministic setting. LÄS MER

  5. 4. Analysis of approximate and exact cosmological solutions in general relativity

    Författare :Claes Uggla; Stockholms universitet; []
    Nyckelord :;

    Sammanfattning : .... LÄS MER

  7. 5. Coarse-Grained Models of Ionic Solutions

    Författare :Ryan Szparaga; Beräkningskemi; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Monte Carlo; Classical Density Functional Theory; Coarse-Grained Models; Ionic Liquids; Prewetting; Capillary Condensation; Electric Double Layer; Differential Capacitance.;

    Sammanfattning : Room-temperature ionic liquids (RTILs) are compounds composed entirely of ions, which are liquid at temperatures below 100 degrees Celsius. Their high ionic strength and strong coupling make them useful for a number of applications, e.g. as electrolytes in supercapacitors. LÄS MER