Sökning: "Per Lundin"

Visar resultat 11 - 15 av 27 avhandlingar innehållade orden Per Lundin.

1. 11. The Frequency of the Frequency : On Hydropower and Grid Frequency Control

   Författare :Linn Saarinen; Urban Lundin; Per Norrlund; Bengt Carlsson; Kjetil Uhlen; Uppsala universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; hydropower; frequency control; governors; power system stability; inertia; primary control; Engineering Science with specialization in Science of Electricity; Teknisk fysik med inriktning mot elektricitetslära;

   Sammanfattning : Variations in the electricity consumption and production connected to the power system have to be balanced by active control. Hydropower is the most important balancing resource in the Nordic system, and will become even more important as the share of variable renewable energy sources increases. LÄS MER

3. 12. Stroke thrombolysis on equal terms? : implementation and ADL outcome

   Författare :Anna Stecksén; Erik Rosendahl; Lillemor Lundin-Olsson; Mattias Hedlund; Per Wester; Anna-Karin Welmer; Umeå universitet; []
   Nyckelord :stroke; reperfusion; thrombolytic therapy; registries; multivariate analysis; healthcare disparities; female; educational status; Sweden;

   Sammanfattning : Stroke thrombolysis is a method for restoring cerebral blood flow after ischemic stroke, with high priority in the Swedish national guidelines. implementation of stroke thrombolysis in Swedish routine stroke care has shown marked differences between demographic groups, hospital types, and regions. LÄS MER

4. 13. Kulturgeografin tar plats i välfärdsstaten : Vetenskapliga modeller och politiska reformer under efterkrigstidens första decennier

   Författare :Pär Wikman; Per Lundin; Niklas Stenlås; Magnus Eklund; David Larsson Heidenblad; Uppsala universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Postwar social science; history of geography; history of planning; central place theory; Torsten Hägerstrand; municipal reforms; reform technocrats;

   Sammanfattning : The aim of this study is to explain why human geography in Sweden became a planning science during the postwar period. Human geography had developed a sophisticated use of abstract models. The proliferation of models within in the social sciences was an international phenomenon during the postwar period. LÄS MER

5. 14. Hydropower plants and power systems : Dynamic processes and control for stable and efficient operation

   Författare :Weijia Yang; Per Norrlund; Urban Lundin; Christophe Nicolet; Uppsala universitet; []
   Nyckelord :;

   Sammanfattning : As the largest global renewable source, hydropower shoulders a large portion of the regulation duty in many power systems. New challenges are emerging from variable renewable energy (VRE) sources, the increasing scale and complexity of hydropower plants (HPPs) and power grid. LÄS MER

7. 15. On Supply Chain Incentive Alignment: Insights from a cash supply chain and a trucking service supply chain

   Författare :Johan Lundin; Teknisk logistik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Supply chain management; Incentive alignment; Cash supply chain; Trucking service supply chain; Mixed methods research;

   Sammanfattning : This dissertation presents a framework for describing, a process for identifying, and a model for evaluating misalignments in the supply chain when varying elements such as structure, processes, and management components. The developed approach makes it possible to address and improve the alignment of supply chain structures, processes, and management components. LÄS MER