Sökning: "cluster"

Visar resultat 6 - 10 av 1209 avhandlingar innehållade ordet cluster.

1. 6. Magnetic Reconnection in Space Plasmas : Cluster Spacecraft Observations

   Författare :Alessandro Retinò; Mats André; Andris Vaivads; Bengt U. Ö. Sonnerup; Uppsala universitet; []
   Nyckelord :Space and plasma physics; space physics; plasma astrophysics; plasma physics; transport processes; boundary layers; magnetic reconnection; turbulence; particle acceleration; solar system; magnetospheres; Rymd- och plasmafysik;

   Sammanfattning : Magnetic reconnection is a universal process occurring at boundaries between magnetized plasmas, where changes in the topology of the magnetic field lead to the transport of charged particles across the boundaries and to the conversion of electromagnetic energy into kinetic and thermal energy of the particles. Reconnection occurs in laboratory plasmas, in solar system plasmas and it is considered to play a key role in many other space environments such as magnetized stars and accretion disks around stars and planets under formation. LÄS MER

3. 7. Bismuth cluster polycations : a solution chemical structural and theoretical study

   Författare :Alexei N. Kuznetsov; KTH; []
   Nyckelord :;

   Sammanfattning : .... LÄS MER

4. 8. Cluster Dynamics and Industrial Policy in Peripheral Regions : a study of cluster formation as a local development process

   Författare :Cali Nuur; Staffan Laestadius; David Jacobson; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Peripheral regions; Industrial policy; regional development policy; cluster dynamics; call centress; Sweden; Hälsingland; Landsortsregioner; Industriell politik; Regional utvecklingspolitik; Klusterdynamik; Call centers; Sverige; Hälsingland; Industrial organisation; administration and economics; Industriell organisation; administration och ekonomi;

   Sammanfattning : The rapid growth of the global economy in the last two decades has created a new economic reality in many municipalities in peripheral regions of Sweden. Having earlier relied on traditional industry as the source of employment, today municipalities in peripheral regions are struggling to survive in a completely changed economic landscape, with new conditions for development. LÄS MER

5. 9. Cluster in situ studies of the auroral acceleration region

   Författare :Bin Li; Göran Marklund; Stein Haaland; KTH; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Cluster; Aurora acceleration region; Physics; Fysik;

   Sammanfattning : This thesis addresses a central topic in auroral physics, namely particle accelerationproducing intense aurora as well as energetic plasma outflow. Cluster satellitemeasurements of electric and magnetic fields, electrons and ions, collected across auroralfield lines, are used to study various aspects of the quasi-static auroral accelerationregion (AAR), its relation to the auroral density cavity, and the relative role of quasistaticand Alfvénic acceleration for producing aurora. LÄS MER

7. 10. Arbetskraftens rörlighet och klusterdynamik. : En studie av IT- och telekomklustren i Kista och Mjärdevi

   Författare :Dzamila Bienkowska; Urban Lindgren; Uppsala universitet; []
   Nyckelord :Social and economic geography; Labour mobility; ICT industry; economic geography; Sweden; clusters; cluster dynamics; knowledge transfer; hiring practices; employee turnover; Kulturgeografi; kulturgeografi; Social and Economic Geography;

   Sammanfattning : Labour mobility can in theory be an efficient channel for knowledge transfer between cluster firms, thus contributing to growth and competitiveness. In the thesis labour mobility in two Swedish ICT clusters is studied. LÄS MER