Sökning: "crossings"
Visar resultat 11 - 15 av 87 avhandlingar innehållade ordet crossings.
11. Modelling Sea Surface Dynamics Using Crossing Distributions
Sammanfattning : The thesis deals mainly with modelling sea surface dynamics. We consider two different scales. LÄS MER
12. Event Prediction and Bootstrap in Time Series
Sammanfattning : Alarm systems are used in many situations, and should be as efficient as possible. In this thesis optimal predictive alarm systems, event predictors, are presented for general linear time series models with external signals. This family of process models include e.g. LÄS MER
13. Applications of Rice's formula in oceanographic and environmental problems
Sammanfattning : This thesis is based on five papers (A-E), all treating various applications of Rice's formula. The areas of application are oceanographic and environmental problems. The first three papers treat properties of encountering waves, that is, waves that a ship encounters while sailing on the ocean. LÄS MER
14. Development of life cycle cost model and analyses for railway switches and crossings
Sammanfattning : Infrastructure managers need to have a safe and available infrastructure, so that train operators can deliver a transport product at an affordable price. In the future, as traffic volume increases, higher utilisation of the existing capacity, less time for maintenance and fewer unplanned interruptions will be critical for meeting the ever increasing need of transport capacity. LÄS MER
15. Automated Squat Detection in Railway Switches & Crossings Using Vibration Measurements and Machine Learning
Sammanfattning : Railway switches and crossings (S&Cs) play a vital role in the operational integrity of a railway network, and their malfunctioning poses substantial risks such as traffic disruptions, economic ramifications, and potential life-threatening accidents. Consequently, it becomes imperative to proactively identify potential defects in S&Cs at an early stage and maintain continuous monitoring of their condition to avoid adverse consequences. LÄS MER