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Visar resultat 1 - 5 av 21 avhandlingar som matchar ovanstående sökkriterier.

1. 1. Efficient Winter Road Maintenance : A Study of Technical and Contractual Issues

   Författare :Adel Abdi; Hans Lind; Björn Birgisson; Lars Silver; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; climate; road climate and weather; road surface roughness; road friction; winter tyre; winter maintenance tools; RWIS; weather station; winter maintenance; contract type; road maintenance contract; winter maintenance contract; partnering; strategic alliance; public procurement; tender; incentives; bundling services; payment mechanism; remuneration models; Civil and Architectural Engineering; Byggvetenskap;

   Sammanfattning : Since ancient times, roads have tied people and cultures together. Roads have been createdwith the aim of facilitating trade and cultural exchange among different regions in the world. LÄS MER

3. 2. A Challenge-driven Framework for Innovations in Railways

   Författare :Veronica Jägare; Ramin Karim; Per-Olof Larsson-Kråik; Ulla Juntti; Mirka Kans; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Railway; Innovation; Implementation; Digitalisation; Maintenance; Data governance; Cross-organisation; eMaintenance; Industrial AI; Maintenance contracts; Drift och underhållsteknik; Operation and Maintenance;

   Sammanfattning : The railway is often perceived as an industry where new technology is not utilised to its full potential. However, the future of the railway and its ability to respond to future transportation demands lies in its ability to adopt, adapt, implement, and integrate emerging technology. These technologies are expected to lead to, e.g. LÄS MER

4. 3. Exploring Public Procurement of Swedish Railway Infrastructure Maintenance

   Författare :Jens Aldenlöv; Bjarne Bergquist; Tina Karrbom Gustavsson; Per Erik Eriksson; Henrik Eriksson; Luleå tekniska universitet; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Public Procurement; Railway Maintenance; Supply Chain Management; Contract Design; Kvalitetsteknik; Quality Technology Management;

   Sammanfattning : In 2002, Sweden started to outsource its railway infrastructure maintenance. Through gradual exposure (i.e. outsourcing one contract area at a time), the Swedish Transport Administration has developed its competence of being a client towards its contractors. LÄS MER

5. 4. Cost optimization of maintenance scheduling for wind turbines with aging components

   Författare :Quanjiang Yu; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Integer linear optimization; Age-based preventive maintenance scheduling; Renewal-reward theorem; Weibull distribution; Combinatorial optimization; Wind turbine maintenance; Virtual replacement; Condition monitoring data; Cox proportional hazards method; Linear programming;

   Sammanfattning : A major part of the wind turbine operation cost is resulted from the maintenance of its components. This thesis deals with the theory, algorithms, and applications concerning minimization of the maintenance cost of wind power turbines, using mathematical modelling to find the optimal schedules of preventive maintenance activities for multi-component systems. LÄS MER

7. 5. Reforming a publicly owned monopoly : costs and incentives in railway maintenance

   Författare :Kristofer Odolinski; Jan-Eric Nilsson; Andrew Smith; Lars Hultkrantz; Marc Ivaldi; Örebro universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Railway track; Maintenance; Contract; Incentive reward ; Competition; Cost; Quality; Economic efficiency; J01 Railway: Railway track; J01 Railway: Railway track; J13 Railway: Economics; J13 Railway: Economics; Economics;

   Sammanfattning : The railway system is often considered to be an industry where a monopoly occurs “naturally”, which can explain the public ownership and the use of regulations. However, railways in Europe have been subject to reforms during the last three decades. LÄS MER