A copula-based model to describe the uncertainty of overtopping variables on mound breakwaters

Rising sea levels caused by climate change are increasing the risk of overtopping on coastal structures. Moreover, there is a growing societal concern about the visual impact of these structures, which leads to the lowering of their crest freeboards. In previous studies, safety during overtopping events was assessed considering the...

Calibration scores for discrete random variables

During this bachelorproject, more research is done to investigate the properties of the Hanea’s and Nane’s calibration score and to look at slight adjustment of Hanea’s and Nane’s calibration score. Both simulated data and real data will be used to investigate the behaviour of these calibration scores.

A Case Study of Ecological Suitability of Mussel and Seaweed Cultivation using Bivariate Copula Functions

Aquaculture is gaining importance in the current context of continuous growth population as a source of (local) food resources and its potential of being combined with other uses at sea (e.g.: offshore energy production or tourism). Consequently, within the European Horizon 2020 project UNITED, the combination of mussel and seaweed cultivation...

Effects of Fitness on Generative Graph Models with Preferential Attachment

Preferential Attachment models offer an explanation for why power laws are so common in real-world data. In these models, we start out with an initial network and add nodes one at a time. For each new node, we make m connections to existing nodes and if we define the attachment probability of attaching to a vertex to be proportional to its...

The "Number Hides Game" on a Tree: A bachelor thesis in game theory

The "Number Hides Game" (NHG) is 2-player game played on a board that consists of a row of p consecutive coins. Player I and player II simultaneously choose subsets of m and n consecutive coins respectively. Player II pays the number of coins that lie in the intersection of the subsets to player I. This thesis introduces basic knowledge from the...

Calculation of dam risk probability of cascade reservoirs considering risk transmission and superposition

Because of the risk transmission and superposition among dams in cascade reservoirs, the analysis and probability calculation of dam risk become more complex compared with a single reservoir. By analyzing the main risk sources and actionmechanisms, the disaster-causing factors, disaster-transmitting body and disaster-bearing body in the cascade...

Probability and distribution of green water events and pressures

This article proposes a method to quantify, first, the probability of occurrence of green water and, second, the expected maximum pressures during green water events using their statistical distribution for ships at forward speed. A large green water data set which represents 1945 hours of continuous sailing on full scale with different sea...

Structural reliability analysis of a submerged floating tunnel under copula-based traffic load simulations

A submerged floating tunnel (SFT) is a structure that has been proposed as an innovative solution for waterway crossings around the world. However, to this day, no SFT has been constructed yet. One of the main reasons is that there is an insufficient insight into the structural reliability of the SFT. Here, a method to assess the expected...

Improving flash flood forecasting using a frequentist approach to identify rainfall thresholds for flash flood occurrence

Flash Flood Guidance (FFG) is a rainfall threshold which initiates flooding in streams. It merely provides a binary output (yes or no) which has large uncertainties in forecasting. In this paper, we propose a new method by combining FFG with the Frequentist method to present the probability of flash flood occurrence based on historical...

Risk assessment methods of cascade reservoir dams: a review and reflection

Risk assessment of cascade reservoir dams is not only the key to ensure the safety of the basin, but also the objective requirement of dam risk management. Based on the development status of cascade reservoirs in China, the complexity of dam risk management of cascade reservoirs compared with a single reservoir was analyzed. By reviewing the...

Duality in interacting particle systems out of equilibrium

In this thesis we study a class of interacting particle systems sharing a duality property. This class includes the Symmetric Inclusion Process (SIP(2k)), the Symmetric Exclusion Process (SEP(2j)) and the Independent Random Walkers (IRW). When these systems are in equilibrium (namely they are isolated from the exterior) they admit stationary...

Three Way Duels: Infinite Games on the Unit Square

With the growing wealth and economy of a country, there are an increasing amount of small and big businesses. Every company has its own marketing strategy that it uses in order to lure customers away from their competition and increase their sales. Choosing the perfect time to advertise or discount several products is of essence for a company to...

Probabilistic downtime estimation for sequential marine operations

A marine project consists of series of operations, with each operation subject to a predefined operational limit and duration. If actual weather conditions exceed the operational limit, the operation cannot be executed and hence downtime occurs. An accurate assessment of uncertainties and the expected downtime during a marine project is...

Scaling limits of long-range quantum random walks

In this thesis we introduce a variation on the quantum random walk to discuss shifts in an arbitrary range. The concept of Hadamard coin was therefore generalised to a higher order. By a Fourier transform method and a tensor product decomposition of the evolution matrix the long-range quantum random walk was found to converge in distribution to...

Quantitative risk analysis of gas explosions in tunnels

Transportation of flammable liquefied gas in tunnels presents a significant risk of an accidental loss of containment leading to an explosion with major consequences. Possible scenarios include a BLEVE, a non-reactive gas expansion explosion and a reactive gas explosion. Quantification of the risk and consequences associated with such events...

Avalanche distribution on the Abelian sandpile model: Avalanche distribution on the Abelian sandpile model

[ not the actual abstract] In this thesis, the sandpile models distributions are analysed on the finite and infinite bethe lattice. To do so, the recursive property of the lattice is used.

Smart reading aid for detecting problems with reading fluency and comprehension

Brain signal and eye tracking technology have been intensively applied in cognitive science in order to study reading, listening and learning processes. Though promising results have been found in laboratory experiments, there are no smart reading aids that are capable to estimate difficulty during normal reading. This paper presents a new...

Probabilistic Power Flow Analysis for a Given Network In Case of Wind Power Penetration

The installation of wind power generation in the Netherlands has been increased drastically over years and there are many going – on projects regarding harnessing wind energy by means of converting it into useful electrical power. One of the largest gas and electrical network operators, Stedin B.V. has decided to operate wind farm (s) in Goeree...