Sökning: "Problem formulation"

Visar resultat 26 - 30 av 410 avhandlingar innehållade orden Problem formulation.

1. 26. Autoionizing states and their relevance in electron-ion recombination

   Författare :Dragan Nikolić; Eva Lindroth; Gleb Gribakin; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Electron-ion recombination; Autoionization; Electron correlation calculations; Doubly excited states; Relativistic many-body perturbation theory; Coupled-cluster methodology; Intruder state problem; Physics; Fysik;

   Sammanfattning : Atomic physics plays an important role in determining the evolution stages in a wide range of laboratory and cosmic plasmas. Therefore, the main contribution to our ability to model, infer and control plasma sources is the knowledge of underlying atomic processes. LÄS MER

3. 27. Mathematical Optimization in Flexible Job Shop Scheduling: Modelling, Analysis, and Case Studies

   Författare :Karin Thörnblad; Göteborgs universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Flexible job shop scheduling; Mixed integer linear programming MILP ; Time-indexed formulation; Makespan; Tardiness; Fixture availability; Preventive maintenance; Night shift; Unmanned time window; Dynamic scheduling; Priority rules; Dispatching rules; Critical ratio; Night shift;

   Sammanfattning : The major theme of this thesis is the mathematical optimization modelling of the flexible job shop scheduling problem. This problem is present in the so-called multitask cell—a production cell at GKN Aerospace's facility located in Trollhättan, Sweden—which has served as a case study during the work with this thesis. LÄS MER

4. 28. Long acting local anaesthetics - a study in rats

   Författare :Henrik Dyhre; Anestesiologi och intensivvård; []
   Nyckelord :MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Medicin människa och djur ; Medicine human and vertebrates ; in vivo and effect kinetics; Comparison of in vitro; Neuro toxicity; Infraorbital nerve block; Sciatic nerve block; Lipid depot formulation;

   Sammanfattning : Local anaesthetics provide excellent pain relief after central and peripheral nerve blocks. However, in many clinical situations there is an insufficient duration of action to allow effective treatment of long-term pain with single injection techniques. This problem became the focus of the present studies. LÄS MER

5. 29. Aspects of Waiting and Contracting in Game Theory

   Författare :Peter Helgesson; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Game Theory; War of Attrition; ESS; N-Player; Principal-Agent Problem; Stochastic Maximum Principle; Pontryagin’s Maximum Principle; Mean- Variance; Time Inconsistent Utility Functions; Game Theory;

   Sammanfattning : The topic of this thesis concerns two selected problem in game theory; the Nplayer War of Attrition and the Principal-Agent problem. The War of Attrition is a well established game theoretic model that was first introduced in the 2-player case by John Maynard Smith. LÄS MER

7. 30. Essays on Microeconometrics and Immigrant Assimilation

   Författare :Alpaslan Akay; Göteborgs universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Average marginal effect; Marginal effect of the average individual; Employment and earnings assimilation; Quasi-fixed effects approach; Initial value problem; Dynamic censored random-effects model; Monte Carlo experiment; Heckman’s approximation; Simple method of Wooldridge; Dynamic random-effects sample-selection model; wage-curve method;

   Sammanfattning : Paper I. Asymptotic bias reduction for a conditional marginal effects estimator in sam- ple selection models. In this article we discuss the di¤erences between the average marginal effect and the mar- ginal effect of the average individual in sample selection models, estimated by the Heck- man procedure. LÄS MER