Sökning: "Complementarity"

Visar resultat 11 - 15 av 86 avhandlingar innehållade ordet Complementarity.

  1. 11. Ghosts and machines : regularized variational methods for interactive simulations of multibodies with dry frictional contacts

    Författare :Claude Lacoursière; Bo Kåggström; Ander Klarbring; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Discrete mechanics; Variational method; Contact problems; Impacts; Least action principle; Saddle point problems; Lagrange Multipliers; Constrained systems; Multibody Systems; Numerical regularization; Constraint realization; Constraint stabilization; Dry friction; Differential Algebraic Equations; Nonsmooth problems; Linear Complementarity; Quaternion algebra; Numerical linear algebra; Physics modeling; Interactive simulation; Numerical stability; Rigid body dynamics; Dissipative systems; Computational physics; Beräkningsfysik;

    Sammanfattning : A time-discrete formulation of the variational principle of mechanics is used to provide a consistent theoretical framework for the construction and analysis of low order integration methods. These are applied to mechanical systems subject to mixed constraints and dry frictional contacts and impacts---machines. LÄS MER

  3. 12. Exports and Externalities

    Författare :Björn Thor Arnarson; Nationalekonomiska institutionen; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; International Trade incl. trade agreements tariffs ; Multi-Product Firms; spillovers; Services; product complementarity;

    Sammanfattning : This thesis, Exports and Externalities consists of three papers. The first chapter, Bridging Trade Barriers: Evaluating Models of Multi-Product Exporters, evaluates empirically the theoretical predictions of several models of multi-product exporters. LÄS MER

  4. 13. Contextualising Constructions of Corporate Social Responsibility : Social Embeddedness in Discourse and Institutional Contexts

    Författare :Brita Backlund Rambaree; Barbara Hobson; Charlotta Stern; Dima Jamali; Stockholms universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; corporate social responsibility; CSR; institutional theory; Foucault; context; embeddedness; institutions; new institutionalism; institutional complementarity; discursive institutionalism; institutional work; responsible investment; SRI; social constructionism; discourse; power; qualitative content analysis; self-reporting; abductive approach; interpretative repertoires; Sociology; sociologi;

    Sammanfattning : ‘Corporate social responsibility’ (CSR) and ‘socially responsible investment’ (SRI) have become predominant frameworks connecting business to society that have spread across the globe. They comprise a shared set of ideas and practices, such as those promoted in global reporting standards and by international organisations such as the UN Global Compact. LÄS MER

  5. 14. Accuracy, efficiency and robustness for rigid particle simulations in Stokes flow

    Författare :Anna Broms; Anna-Karin Tornberg; Mattias Sandberg; Eric Keaveny; KTH; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Stokes flow; rigid particles; accuracy; fundamental solutions; method of images; multiblob; contact avoiding; complementarity problem; barrier method; elliptic PDE; grid optimisation; pair-correction; boundary integral equations; Stokesflöde; noggrannhet; stela partiklar; fundamentallösningar; randintegralekvation; reflektionspunkter; multiblob; kontaktundvikande algoritmer; komplementaritetsproblem; barriärmetod; elliptisk PDE; gridoptimering; parkorrektion; Numerical Analysis; Numerisk analys;

    Sammanfattning : The thesis concerns simulation techniques for systems of nano- to micro-scaled rigid particles immersed in a viscous fluid, ubiquitous in nature and industry. With negligible fluid inertia, the set of PDEs known as the Stokes equations can be used to model the hydrodynamics. LÄS MER

  7. 15. Decomposition Methods for Combinatorial Optimization

    Författare :Uledi Ngulo; Torbjörn Larsson; Nils-Hassan Quttineh; Egbert Mujuni; Athanasios Migdalas; Linköpings universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES;

    Sammanfattning : This thesis aims at research in the field of combinatorial optimization. Problems within this field often posses special structures allowing them to be decomposed into more easily solved subproblems, which can be exploited in solution methods. These structures appear frequently in applications. LÄS MER