Sökning: "road maintenance"

Visar resultat 21 - 25 av 126 avhandlingar innehållade orden road maintenance.

1. 21. 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

3. 22. 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

4. 23. A Bayesian approach to retrospective detection of change-points in road surface measurements

   Författare :Fridtjof Thomas; Urban Hjort; Stockholms universitet; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Change-point detection; retrospective view; autoregressive processes; minimal imaginary training sample; road surface measurements; international roughness index; rutting; Laser-RST vehicles; road maintenance; pavement management; statistik; Statistics;

   Sammanfattning : First-order autoregressive processes are analysed for sudden changes in parameter value. In its most general form, a multivariate vector of measurements is allowed, and no prior knowledge about the involved parameters is required. LÄS MER

5. 24. Performance Measures of Road Infrastructures

   Författare :Babak Ebrahimi; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; LCCA; LCA; road infrastructure; SLR; survival analysis; modelling; lifetime; GIS;

   Sammanfattning : Roads are transport infrastructures that play a fundamental role in the development of societies and businesses. They are valuable assets, as they connect places, provide mobility, create jobs and stimulate economic prosperity. LÄS MER

7. 25. Evaluation of Dust Suppressants for Gravel Roads: Methods Development and Efficiency Studies

   Författare :Karin Oscarsson; Högskolan Dalarna; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Gravel road; dust; particulate matter; PM10; horizontal dust diffusion; deteriorations; maintenance; dust control; dust suppressants; efficiency; application rate; leaching; residual concentration; seasonal variations; salt solution; solid salt; calcium chloride; magnesium chloride; lignosulphonate; polysaccharide sugar ; bitumen emulsion; rape oil; starch; surfactant; mesa; clay; fine material content.; Complex Systems – Microdata Analysis; Komplexa system - mikrodataanalys;

   Sammanfattning : Application of the proper dust suppressant to a gravel road ensures road safety and riding comfort as well as creating a cleaner and healthier environment for residents in buildings adjacent to the road. It also reduces the need and cost for vehicle repair, road maintenance activities, and aggregate supplementation. LÄS MER