Search for dissertations about: "production of time intervals"

Showing result 16 - 20 of 29 swedish dissertations containing the words production of time intervals.

  2. 16. The role of magnetic perturbations in runaway electron and sawtooth dynamics

    Author : Gergely Papp; Chalmers tekniska högskola; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; tokamak; runaway electron; sawtooth oscillation; magnetic perturbation; MHD mode; fusion plasma physics;

    Abstract : Nuclear fusion in tokamaks is a possible future energy production mechanism. Some of the still unsolved problems are connected to the effect of magnetic perturbations on the radial plasma transport. Two such problems are addressed in this thesis. READ MORE

  4. 17. Multi-Echelon Inventory Control with Consideration of Emissions and Service Differentiation

    Author : Lina Johansson; Produktionsekonomi; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : An increased focus on sustainability and initiatives towards green supply chains raises new challenges for efficient inventory control. This doctoral thesis addresses the consequences some of these initiatives have on the modelling of inventory systems and the resulting policy variables. READ MORE

  5. 18. Optimization of Low-Level Controllers and High-Level Polymer Grade Changes

    Author : Per-Ola Larsson; Institutionen för reglerteknik; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; process control; PID control; robustness; noise sensitivity; dynamic optimization; polymerization; Modelica;

    Abstract : Two design problems at different levels in the control hierarchy are considered; optimization of robust low-level controllers with constrained control signal activity and optimization of economical high-level polyethylene grade changes. As for the first design problem, a constraint on control signal activity due to measurement noise is presented and used when optimizing and comparing PI/PID controllers with measurement filters of different orders. READ MORE

  6. 19. Microdialysis monotoring of ischemic metabolism in splanchnic organs : liver and intesine

    Author : Johan Ungerstedt; Karolinska Institutet; Karolinska Institutet; []
    Keywords : ;

    Abstract : Background: Monitoring vascular complications in the liver and the intestine is of great importance. Ischemia in these organs is life threatening and may cause organ dysfunction, sepsis and multiple organ failure. Aim: The present thesis explores the use of microdialysis as a monitoring technique in the liver and the intestine. READ MORE

  7. 20. Water hyacinth (Eichhornia crassipes) : biomass production, ensilability and feeding value to growing cattle

    Author : Ho Thanh Tham; Sveriges lantbruksuniversitet; Sveriges lantbruksuniversitet; []
    Keywords : LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES; LANTBRUKSVETENSKAPER; AGRICULTURAL SCIENCES;

    Abstract : Water hyacinth has now spread to all tropical and subtropical countries and is regarded as one of the world's most invasive aquatic plants. Water hyacinth (WH) is also known to have significant ecological and socio-economic effects. READ MORE