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Visar resultat 21 - 25 av 86 avhandlingar som matchar ovanstående sökkriterier.

  1. 21. Technology, Human Capital and Labor Demand

    Författare :Eleni Savvidou; Bertil Holmlund; Erik Mellander; Pekka Illmakunnas; Uppsala universitet; []
    Nyckelord :Economics; Technology; Human Capital; Productivity; Efficiency; Nationalekonomi; nationalekonomi; Economics;

    Sammanfattning : Essay 1 investigates (i) possible externalities in the use of IT and (ii) IT and human capital interactions. Our empirical analysis uses a 14-industry panel for Swedish manufacturing 1986-95. LÄS MER

  3. 22. Accelerated granular matter simulation

    Författare :Da Wang; Martin Servin; Jin Ooi; Umeå universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; discrete element method; nonsmooth contact dynamics; multibody dynamics; granular media; simulation; projected Gauss-Seidel; validation; iron ore pellets; pelletising balling circuit; model reduction; design optimization;

    Sammanfattning : Modeling and simulation of granular matter has important applications in both natural science and industry. One widely used method is the discrete element method (DEM). It can be used for simulating granular matter in the gaseous, liquid as well as solid regime whereas alternative methods are in general applicable to only one. LÄS MER

  4. 23. Organising Industrial Activities - An analytical framework

    Författare :Anna Dubois; Chalmers tekniska högskola; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; activity structures; complementarities; activities; activity chains; dependencies; boundaries; networks; similarities;

    Sammanfattning : The way in which industrial activities are organised among firms has been a fundamental theoretical concern for a long time. In practice, firms have found these matters, referred to as make-or-buy issues, difficult to analyse. LÄS MER

  5. 24. Vintage models of spatial structural change

    Författare :Lars Westin; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; adiabatic approximation; dynamics; input-output; interregional computable general equilibrium; slaving principle; spatial models; spatial linear expenditure system; spatial price equilibrium; transportation networks; vintage function;

    Sammanfattning : In the study a class of multisector network models, suitable for simulation of the interaction between production, demand, trade, and infrastructure, is presented. A characteristic feature of the class is a vintage model of the production system. LÄS MER

  7. 25. The Knowledge Arena : Approaching agroforestry and competing knowledge systems - a challenge for agricultural extension

    Författare :Per Hillbur; Institutionen för kulturgeografi och ekonomisk geografi; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Tanzania; coevolution; arena perspective; agroforestry; natural resource management; agricultural extension; knowledge systems; Social geography; Socialgeografi;

    Sammanfattning : Agriculture in many African countries is characterised by large diversity in production and great variation in growing conditions, irrigation potential and access to markets. This variation has proved to be a difficult matter when adjusting national agricultural policies and development projects to local conditions. LÄS MER