Searched for: subject%3A%22Newton%255C-Raphson%22
(1 - 17 of 17)
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Marinissen, Annemar (author)
Patient motion during an MR scan is still a problem in the medical field. It results in artefacts and reduces image quality which can lead to wrong patient outcomes. A patient moves due to the long scanning times, discomfort, and restlessness. Motion correction techniques are developed to prevent or compensate for the movements. Prospective...
master thesis 2023
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Ruland, Oscar (author), Mkhoyan, T. (author), De Breuker, R. (author), Wang, Xuerui (author)
journal article 2023
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Panichella, A. (author)
A key idea in many-objective optimization is to approximate the optimal Pareto front using a set of representative non-dominated solutions. The produced solution set should be close to the optimal front (convergence) and well-diversified (diversity). Recent studies have shown that measuring both convergence and diversity depends on the shape (or...
conference paper 2022
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Markensteijn, A.S. (author)
Energy systems are vital in modern society, and reliable operation is crucial. Multi-carrier energy systems (MESs), which couple two or more single-carrier systems, have recently become more important, as the need for sustainable energy systems increases. Important tools for the design and operation of energy systems are steady-state simulation...
doctoral thesis 2021
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Kootte, M.E. (author), Vuik, Cornelis (author)
This paper compares and assesses several numerical methods that solve the steady-state power flow problem on integrated transmission-distribution networks. The integrated network model consists of a balanced transmission and an unbalanced distribution network. It is important to analyze these integrated electrical power systems due to the...
journal article 2021
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Laman Trip, J.D.S. (author), Wieringen, Wessel N.van (author)
Computationally efficient evaluation of penalized estimators of multivariate exponential family distributions is sought. These distributions encompass among others Markov random fields with variates of mixed type (e.g., binary and continuous) as special case of interest. The model parameter is estimated by maximization of the pseudo...
journal article 2021
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Sereeter, B. (author)
During the normal operation, control and planning of the power system, grid operators employ numerous tools including the Power Flow (PF) and the Optimal Power Flow (OPF) computations to keep the balance in the power system. The solution of the PF computation is used to assess whether the power system can function properly for the given...
doctoral thesis 2020
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Brulleman, Floris (author)
Numerical models are paramount in describing the complex physical world around us. They are often based on non-linear functions, which have to be solved in order to run a simulation. The first goal of this thesis is to compare the Jacobian-free Newton-Krylov method against the regular Newton-Raphson method for solving non-linear equations. When...
bachelor thesis 2019
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Yu, C. (author)
It is difficult to accurately predict the strength of masonry and concrete structures. The most widely used method for simulating their behaviour is finite element analysis with the Newton-Raphson method and arch length control. However, the Newton-Raphson method can diverge and not produce a result, for example in bifurcations or during snap...
doctoral thesis 2019
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van Roon, Joey (author)
In this research, known theory and methods for electric networks are translated and applied to gas transport networks.<br/><br/>The networks are represented by directed graphs with their corresponding incidence matrices. The theory about these is extensively discussed in addition to their relevance to Kirchoff's Circuit Laws.<br/><br/>Several...
master thesis 2019
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Sereeter, B. (author), Vuik, Cornelis (author), Witteveen, C. (author)
A general framework is given for applying the Newton–Raphson method to solve power flow problems, using power and current-mismatch functions in polar, Cartesian coordinates and complex form. These two mismatch functions and three coordinates, result in six possible ways to apply the Newton–Raphson method for the solution of power flow...
journal article 2019
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Yu, C. (author), Hoogenboom, P.C.J. (author), Rots, J.G. (author)
Quasi brittle materials, such as un-reinforced masonry or concrete are difficult to analyse because often the traditional Newton–Raphson (N-R) procedure fails to converge. Many solutions have been proposed such as Sequentially Linear Analysis (SLA), but these may fail in case of non-proportional loading with a large prestress. In this paper a...
journal article 2018
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Sereeter, B. (author), Vuik, Cornelis (author), Witteveen, C. (author)
Two mismatch functions (power or current) and three coordinates (polar, Cartesian andcomplex form) result in six versions of the Newton–Raphson method for the solution of powerflow problems. In this paper, five new versions of the Newton power flow method developed forsingle-phase problems in our previous paper are extended to three-phase power...
journal article 2017
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Lourenco, P.B. (author), De Borst, R. (author), Rots, J.G. (author)
journal article 1997
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Paardekooper, E.J.H.C. (author)
Voor het oplossen van niet-lineaire vrije oppervlakteproblemen in 2 dimensies is een numerieke methode uitgewerkt, die voor de ruimtelijke discretisatie gebruik maakt van de Rand Elementen Methode: REM. Deze methode is gebaseerd op de 2e stelling van Green en de logaritmische potentiaal als fundamentele oplossing, zodat een potentiaalprobleem...
master thesis 1992
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ten Dam, A.A. (author)
Numerical simulation of constrained dynamical systems is known to exhibit stability problems even when the unconstrained system can be simulated in a stable manner. We show that not the constraints themselves, but the transformation of a continuous set of equations to a discrete set of equations is the true source of the stability problem....
report 1990
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Van Ieperen, H.J. (author)
Nadat in hoofdstuk 1 een beschrijving van een zandvang is gegeven, komt in de volgende twee hoofdstukken de karakteristieke methode dan ook uitgebreid aan de orde, en is dan vooral van belang voor een beter inzicht in het probleem. In hoofdstuk 2 wordt aan de hand van een literatuuronderzoek een aantal schematisaties van de gebruikte...
master thesis 1979
Searched for: subject%3A%22Newton%255C-Raphson%22
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