Analysis of Risk-Based Operational Bird Strike Prevention

Bird strike prevention in civil aviation has traditionally focused on the airport perimeter. Since the risk of especially damaging bird strikes outside the airport boundaries is rising, this paper investigates the safety potential of operational bird strike prevention involving pilots and controllers. In such a concept, controllers would be...

Risk-based security assessment of transmission line overloading considering spatio-temporal dependence of load and wind power using vine copula

Location of wind power plants and demand centres are not always close by; hence, the transmission of energy puts a burden on existing grid infrastructure. This unwanted burden necessitates transmission lines to operate more and more frequently close to their operating limits. To alleviate such situations, this research addresses the advantages...

Large-eddy simulation of highly underexpanded transient gas jets

Large-eddy simulations (LES) based on scale-selective implicit filtering are carried out in order to study the effect of nozzle pressure ratios on the characteristics of highly underexpanded jets. Pressure ratios ranging from 4.5 to 8.5 with Reynolds numbers of the order 75?000–140?000 are considered. The studied configuration agrees well with...

High dimensional dependence: Copulae, sensitivity, sampling

Uncertainty communication

Estimating Probability of Capsize for Operator Guidance

Determination of the nucleus size from the growth probability of clusters

Exact and approximate general expressions for the growth and decay probabilities of a cluster in one-component nucleation are given. A method is proposed for a model-independent determination of the nucleus size with the help of data for the dependence of the cluster growth probability on the cluster size. Monte Carlo simulation data for the...

Neutron-multiwave-interference experiments with many resonance coils

From probability of exceendance to probability of flooding

A chain is never stronger than its weakest link. This insight is the basis for the calculation method to determine the f lood probabilities of dike ring areas in the Netherlands. The TAW can already formulate first recommendations on research and policy making. This does not imply that the research on 'Flood risks: a study on probabilities and...

Sea Waves on Deep Water

Analysis of sea states in deep water. - Discussed will be the difficulties of an analytical solution for the wave period and the wave height probability - The closed solution for the wave height probability in the limit of the band-width approaching zero - The closed solution for the wave height probability in the limit H/sqrt(m0)->inf. - The...

Reliability of nondestructive inspection

This report describes the concept of reliability of nondestructive inspection (NDI) and reviews the different aspects involved. First, the probability of detection (POD) of flaws in flawed specimens is discussed. To provide a measure of confidence in an estimated POD, lower botind values of this probability at a given confidence level are...

Effect of Spatial Variability on Buried Footings

Natural soil is one of the most variable materials as a result of physical and chemical changes. The variation in soil properties significantly affects the failure mechanism and bearing capacity of a footing. This effect is further complicated by considering the spatial correlation of the soil properties. The purpose of this study is to...