Sökning: "deterioration cost"

Visar resultat 1 - 5 av 52 avhandlingar innehållade orden deterioration cost.

1. 1. On Degradation and Monitoring Tools for Gas and Steam Turbines

   Författare :Magnus Genrup; Kraftverksteknik; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; applied thermodynamics; Throughflow; Thermal engineering; Monitoring; Gas Turbine; Turbomachinery; termodynamik; Termisk teknik; Deterioration; Steam Turbine;

   Sammanfattning : The revenue from a power plant is strongly dependent on the life cycle cost. Today, when the market conditions for power-producing companies have shifted from a protected market to a deregulated market, the need for tools to monitor power plants has increased significantly. LÄS MER

3. 2. Topics in convex and mixed binary linear optimization

   Författare :Emil Gustavsson; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; subgradient methods; Lagrangian dual; recovery of primal solutions; inconsistent convex programs; ergodic sequences; convex optimization; mixed binary linear optimization; maintenance scheduling; preventive maintenance; deterioration cost; inconsistent convex programs;

   Sammanfattning : This thesis concerns theory, algorithms, and applications for two problem classes within the realm of mathematical optimization; convex optimization and mixed binary linear optimization. To the thesis is appended five papers containing its main contributions. LÄS MER

4. 3. Epidemiology of heart failure and feasibility of home care in patients with worsening chronic heart failure

   Författare :Masoud Shafazand; Göteborgs universitet; []
   Nyckelord :Chronic heart failure; mortality; deterioration; hospitalisation; gender; home care; quality-adjusted life years; emergency care; health care costs; ischaemic; non-ischaemic; health-related quality of life; conventional care; acute myocardial infarction; coronary heart disease; heart failure;

   Sammanfattning : Aim: To investigate gender-specific trends in long-term mortality in patients hospitalised for ischaemic and non-ischaemic heart failure (HF) and explore temporal trends in the risk of HF complicating acute myocardial infarction (AMI). Another aim is to characterise patients with chronic heart failure (CHF) that seek an emergency department (ED) because of their deteriorating condition and evaluate the feasibility of home care (HC) in comparison with conventional care (CC) in patients with worsening CHF. LÄS MER

5. 4. Optimization of Maintenance Planning for Multi-Component Systems, and Primal-Dual Convergence Characterizations in Convex Optimization

   Författare :Magnus Önnheim; Göteborgs universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; subgradient methods; Lagrangian dual; primal recovery; inconsistent convex programs; ergodic sequences; maintenance scheduling; preventive maintenance; deterioration cost; deterioration cost;

   Sammanfattning : This thesis considers two topics within mathematical programming. The first topic is an investigation into the behaviour of primal-dual subgradient algorithms with primal ergodic averaging in the case where it is not known a priori whether the primal program is consistent or not. LÄS MER

7. 5. Deterioration Models and Road Capital as Tools in Performance Contracts for Pavement Maintenance

   Författare :Peter Ekdahl; Trafik och väg; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Teknik; pavement management system; performance contract; pavement maintenance; deterioration model; Technological sciences; road capital; Social sciences; Samhällsvetenskaper;

   Sammanfattning : A reorganization of the Swedish National Road Administration (SNRA) has urged a demand to work as a professional agency only, without any work by direct labor. This structure has enforced a change in how to handle the pavement maintenance and performance contracts are being promoted since they encourage product development and sustainability. LÄS MER