Avancerad sökning

Hittade 4 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Turbulence measurements in fiber suspension flows : experimental methods and results

   Författare :Monika Carina Fällman; Fritz Bark; Daniel Söderberg; Fredrik Lundell; Thomas Wikström; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; fluid; flow; turbulent; turbulence; paper; pulp; fiber; fibre; suspension; two-phase; experimental; conductivity; micro-probes; passive scalar; ultrasonic; Doppler shift; Fluid mechanics; Strömningsmekanik;

   Sammanfattning : Turbulent mixing is present in many pulp and paper processes. It is a particularly important factor in the design and improvements of the paper machine headbox, influencing the final paper structure. LÄS MER

3. 2. Essays on intergenerational income mobility, geographical mobility, and education

   Författare :Stefanie Heidrich; Thomas Aronsson; David Granlund; Magnus Wikström; Markus Jäntti; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; optimal taxation; social norms; intergenerational mobility; regional analysis; multilevel model; child human capital development; moving costs; simulation of income paths; lifetime income; nationalekonomi; Economics;

   Sammanfattning : This thesis consists of an introductory part and the following four self-contained papers:In Paper [I] we analyze the implications of social identity and self-categorization for optimal redistributive income taxation. A two-type model is supplemented by an assumption that individuals select themselves into social categories, in which norms are formed and education effort choices partly depend on these norms. LÄS MER

4. 3. The phase-out of the nuclear family? : empirical studies on the economics and structure of modern Swedish families

   Författare :Magdalena Norberg-Schönfeldt; Magnus Wikström; Thomas Aronsson; Katarina Nordblom; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Time allocation; labour-force participation; educational achievements; match quality; financial surprises; unemployment; divorce; family structure; Economics; Nationalekonomi;

   Sammanfattning : This thesis consists of three papers on the economics and structure of Swedish families.Paper [I] examines the determinants of children’s educational achievement in Sweden. LÄS MER

5. 4. Essays on Delegated Search and Temporary Work Agencies

   Författare :Tomas Raattamaa; Magnus Wikström; Thomas Aronsson; Mats Bergman; Umeå universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; delegated search; principal-agent; matching; transition probability; temporary work agencies; nationalekonomi; Economics;

   Sammanfattning : Paper [I] models a game, where two temporary work agencies (TWAs) compete to fill a vacancy at a client firm (CF). They simultaneously choose how much effort to expend, based on their expectation of how good their opponent’s best candidate will be. LÄS MER