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Visar resultat 11 - 15 av 1845 avhandlingar som matchar ovanstående sökkriterier.
11. Infrastructure investment planning under uncertainty
Sammanfattning : This dissertation is concerned with the planning processes in transportation and infrastructure investments and the aim is to improve risk assessment, risk valuation and risk management. Many of the results presented in this thesis are also applicable to a wider range of questions... LÄS MER
12. Uncertainty, variability and environmental risk analysis
Sammanfattning : The negative effects of hazardous substances and possible measures that can be taken are evaluated in the environmental risk analysis process, consisting of risk assessment, risk communication and risk management. Uncertainty due to lack of knowledge and natural variability are always present in this process. LÄS MER
13. Comparing Procurement Methods in Road Construction Projects : Influence on Uncertainty, Interaction and Knowledge
Sammanfattning : The construction sector is often considered to show a number of limitations regarding efficiency and effectiveness, conclusions normally drawn irrespective of project procurement method used, and despite the common assumption that differences among approaches exist regarding these aspects. The study investigates differences and similarities among procurement methods using a longitudinal multi-case study based on two comparatively large infrastructure projects: a traditional so-called design-bid-build project and an unconventional so-called design-build-maintain project. LÄS MER
14. Reliable Uncertainty Quantification in Statistical Learning
Sammanfattning : Mathematical models are powerful yet simplified abstractions used to study, explain, and predict the behavior of systems of interest. This thesis is concerned with their latter application as predictive models. LÄS MER
15. Virus Fate and Transport in Groundwater : Organic matter, uncertainty, and cold climate
Sammanfattning : Water managers must balance the need for clean and safe drinking water with ever-increasing amounts of waste-water. A technique for treating and storing surface water called “managed aquifer recharge” (MAR) is frequently used to help maintain this balance. LÄS MER