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Van Lieshout, M.C. (author)
In this report a model has been derived to simulate morphological behaviour under tidal conditions. The model is based on the set of equations of motion and mass-balance for both water and sediment. The study focused on the underlying assumption that the kinematic response of the water movement on the bottom variation is much stronger than the...
master thesis 1993
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Van Kuik, C.A. (author)
In the one-dimensional 'Rhine Alarm Model' differences between the actual travel time of a pollutant-cloud (Tpol), originating from an instantaneous release of an accidental spill, and the travel time, based on the flow velocity (Tflow) is represented by a lag coefficient ß. The travel time of the pollutant Tpol is related to the centroid of the...
master thesis 1994
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Den Dekker, P. (author), Van Voorthuizen, J.M. (author)
The morphological behaviour of bifurcations in rivers is a poorly understood problem with which many river engineers are confronted. Bifurcations are mostly found in deltas, but also in braided sections of a river. The course of a braided river is highly unstable and unpredictable; serious problems can therefore arise if an attempt is made to...
master thesis 1994
document
Roosjen, R. (author), Zwanenburg, C. (author)
One of the unsolved problems in the water resource engineering is the morphological behaviour of bifurcations in rivers. Bifurcations can be found in deltas, in estuaries and in braided rivers. When modelling river reaches which contain a bifurcation, a nodal point relation is needed. The problem is to determine this nodal point relation. The...
master thesis 1995
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Van Liebergen, J.C.G. (author)
This study contains two topics which are important for the use of a one-dimensional computer model, calculating morphological changes in time. Firstly, for a good prediction of the morphological changes by the model a good reproduction of the water movement and the sediment movement is necessary. One of the conditions for a good reproduction of...
master thesis 1995
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Kerckhoven, J.D.M. (author)
The morphological behaviour of estuaries is complex and at present (1995) not well understood. Ebb and flood channels play an important role in the morphological behaviour of an estuary. In order to get more insight in the morphological behaviour of such systems it is studied whether a 1-D morphodynamic network model gives insight in this...
master thesis 1995
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Eerkens, J.W. (author)
In one-dimensional river modelling it is common to schematise the cross-section into a rectangular cross-section with a constant width. If a quasi-steady flow is assumed, the equilibrium longitudinal profile is known and unique: the bottom slope is constant and equals the water surface slope. However, numerical calculations at DELFT HYDRAULICS...
master thesis 1996
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Kriele, H.O. (author)
The 5,464 km long Yellow River (Chinese: Huang He) is the second longest river of the Peoples Republic of China. Its source is in Qinghai-Tibet Plateau and empties after serving an agricultural population of over 126 million people in the Bohai Bay. The main characteristic of the Yellow River is the extremely high sediment load which causes the...
master thesis 1996
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Langenberg, R. (author)
Netwerken vormen een steeds belangrijker onderwerp in wetenschappelijk onderzoek. Netwerkanalyse wordt zelfs al gezien als een wetenschap op zich. Wiskundig gezien is een netwerk niets anders dan een graaf en in dit project gaan we dan ook een aantal grafen analyseren. We doen dit met behulp van spectrale grafentheorie. De eigenwaarden van de...
bachelor thesis 2008
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Timmer, M. (author)
Rendezvous problems and search games (with two players) are related problems. In a rendezvous problem the players like to meet as soon as possible, while in a search game one of them tries to avoid the meeting as long as possible. So in a rendezvous problem the players have a common interest and in a search game the players have conflicting...
master thesis 2008
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Ypma, R.J.F. (author)
We investigate an old number-theoretical problem by Mahler. Using beta-expansions and p-adic valuations we obtain some new results. An important extension on a theorem on periodicity concerning expansions with algebraic base is proven.
master thesis 2009
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De Zoete, J.C. (author)
Consider the following guessing game: Lucy thinks of a number that is in between 0 and 100 and James tries to guess it as fast as possible. Lucy says ’Higher’ when the guess is too low and she says ’Lower’ when the guess is too high. A good strategy for James is tossing 100 fair coins where the first guess is equal to the number of coins that...
bachelor thesis 2010
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Dannenberg, F.G.W. (author)
The equivalence of streams under transducers is investigated, as introduced by Klop 2011. In the process, some morphic properties of the Toeplitz words as first described by Keane are discovered.
master thesis 2011
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Greep, N.P. (author)
We geven een uitleg, een bewijs en toepassingen van de Afbeeldingsstelling van Riemann. Dit passen we toe op het zogenaamde prinses en monsterspel. We spelen het spel op de eenheidsschijf, waarna we het gebied aan de hand van de Afbeeldinsstelling van Riemann transformeren naar een polygon. Hiervoor gebruiken we de Cayley transformatie en de...
bachelor thesis 2011
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Janssen, T.M.L. (author)
Hoewel James Yorke niet de eerste was die het verschijnsel wat we nu kennen als chaos waarnam, was hij wel degene die het de naam chaos gaf. Yorke kreeg in 1972 het artikel "De- terministic Nonperiodic ow"van een collega. In dit stuk beschreef de meteoroloog Edward Lorenz een simpel systeem van vergelijkingen, gebaseerd op vloeistof dynamica met...
bachelor thesis 2012
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Mahaffey, Y.G. (author)
Models assets as gambles. Develops objective measure for riskiness. Provides full mathematical proofs
bachelor thesis 2012
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Krebs, T.J.P. (author)
In dit werk hebben we drie verschillende bewerkingen op automatische rijen onderzocht en vastgesteld of we kunnen garanderen dat de resulterende rij automatisch blijft. In het algemeen is het antwoord hierop voor alle drie negatief, maar voor elk zijn er gevallen te onderscheiden met een positief antwoord. De bewerkingen in kwestie zijn het...
bachelor thesis 2012
document
Brandt, R.A.J. (author)
In this document, the proof of the existence of an infinite prime flow, by showing that a Proximal Orbit Dense flow is prime, is examined. This proof has been given by Furstenberg, Keynes and Shapiro in the year 1973. This document investigates this proof thoroughly, as it is quite intricate and it requires a proficient amount of theory. As a...
master thesis 2012
document
Op den Kelder, J.M. (author)
Throughout the history of the western world a constant struggle has been taking place between governments and terrorist organisations. Game theory has proven helpful in enhancing our understanding of struggles between two players with opposing interests. The September 11 attacks on the USA in 2001 marked a profound strategic shift in the...
bachelor thesis 2012
document
Lagerweij, Z.A. (author)
master thesis 2012
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