Sökning: "link flows"

Visar resultat 1 - 5 av 51 avhandlingar innehållade orden link flows.

  1. 1. Disentangling Trade Flows : Firms, Geography and Technology

    Författare :Martin Andersson; Jönköping University; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economics; Nationalekonomi;

    Sammanfattning : This thesis consists of three individual studies and a common introduction. Albeit distinct and self-contained, all studies are devoted to how and why trade flows adjust according to characteristics of markets and attributes of links between markets. LÄS MER

  3. 2. On the use of traffic flows for improved transportation systems : Mathematical modeling and applications

    Författare :Henrik Fredriksson; Mattias Dahl; Johan Holmgren; Benny Lövström; Joakim Ekström; Blekinge Tekniska Högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Mathematical modeling; Transportation systems; Link flows; Mathematics and applications; Matematik med tillämpningar;

    Sammanfattning : This thesis concerns the mathematical modeling of transportation systems for improved decision support and analysis of transportation-related problems. The main purpose of this thesis is to develop and evaluate models and methods that exploit link flows. LÄS MER

  4. 3. Symplectic methods for isospectral flows and 2D ideal hydrodynamics

    Författare :Milo Viviani; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; Symplectic methods; Fluid dynamics; Integrability theory; Euler equations; Lie--Possion systems; Isospectral flows; Geometric integration; Structure preserving algorithms; Hamiltonian systems;

    Sammanfattning : The numerical solution of non-canonical Hamiltonian systems is an active and still growing field of research. At the present time, the biggest challenges concern the realization of structure preserving algorithms for differential equations on infinite dimensional manifolds. LÄS MER

  5. 4. Beyond IT and Productivity : Effects of Digitized Information Flows in Health Care

    Författare :Pontus Fryk; Thomas Falk; Nils-Göran Olve; Mats Edenius; Linköpings universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Health Care; Productivity Paradox; Information Technology; Productivity; Process; Information; Communication; Economy; Business and economics; Ekonomi; Economic Information Systems; Ekonomiska informationssystem;

    Sammanfattning : Denna avhandling undersöker hur investeringar i IT, och digitaliseringen av informationsflöden, har påverkat produktiviteten inom sjukvården. Genom empiriska undersökningar av avgränsade sjukvårdsprocesser – samt diskussioner baserade på idéer och teorier relaterade till ekonomi, ”produktivitetsparadoxen”, så kallade General Purpose Technologies (GPTs), och medicinsk informatik – detekteras och analyseras effekter av digitaliseringen. LÄS MER

  7. 5. Simulations of the Dynamics of Fibre Suspension Flows

    Författare :Stefan B Lindström; Tetsu Uesaka; Myat Htun; Fritz Bark; Mittuniversitetet; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fibre; fibre suspension; simulation; paper; papermaking; forming; fibre orientation distribution; fibre flexibility; viscosity; first normal stress difference; fluid flow; simple shear flow; two-way coupling; three-dimensional; Chemical engineering; Kemiteknik; Engineering physics; Teknisk fysik;

    Sammanfattning : A new model for simulating non-Brownian flexible fibres suspended in a Newtonian fluid has been developed. Special attention has been given to include realistic flow conditions found in the industrial papermaking process in the key features of the model; it is the intention of the author to employ the model in simulations of the forming section of the paper machine in future studies. LÄS MER