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Scenario Parameter Generation Method and Scenario Representativeness Metric for Scenario-Based Assessment of Automated Vehicles

de Gelder, E. (author), Hof, Jasper (author), Cator, Eric (author), Paardekooper, Jan Pieter (author), Camp, Olaf Op den (author), Ploeg, Jeroen (author), De Schutter, B.H.K. (author)

The development of assessment methods for the performance of Automated Vehicles (AVs) is essential to enable the deployment of automated driving technologies, due to the complex operational domain of AVs. One candidate is scenario-based assessment, in which test cases are derived from real-world road traffic scenarios obtained from driving...

journal article 2022

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Where to Look Next: Learning Viewpoint Recommendations for Informative Trajectory Planning

Lodel, M. (author), Ferreira de Brito, B.F. (author), Serra Gomez, A. (author), Ferranti, L. (author), Babuska, R. (author), Alonso-Mora, J. (author)

Search missions require motion planning and navigation methods for information gathering that continuously replan based on new observations of the robot's surroundings. Current methods for information gathering, such as Monte Carlo Tree Search, are capable of reasoning over long horizons, but they are computationally expensive. An alternative...

conference paper 2022

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Multilevel Monte Carlo with Surrogate Models for Resource Adequacy Assessment

Sharifnia, E. (author), Tindemans, Simon H. (author)

Monte Carlo simulation is often used for the reliability assessment of power systems, but it converges slowly when the system is complex. Multilevel Monte Carlo (MLMC) can be applied to speed up computation without compromises on model complexity and accuracy that are limiting real-world effectiveness. In MLMC, models with different complexity...

conference paper 2022

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Accelerating system adequacy assessment using the multilevel Monte Carlo approach

Tindemans, Simon H. (author), Strbac, Goran (author)

Accurately and efficiently estimating system performance under uncertainty is paramount in power system planning and operation. Monte Carlo simulation is often used for this purpose, but convergence may be slow, especially when detailed models are used. Previously published methods to speed up computations may severely constrain model complexity...

journal article 2020

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Understanding the influence of three-dimensional sidewall roughness on observed line-edge roughness in scanning electron microscopy images

van Kessel, L.C.P.M. (author), Huisman, T.A. (author), Hagen, Cornelis W. (author)

Background: Line-edge roughness (LER) is often measured from top-down critical dimension scanning electron microscope (CD-SEM) images. The true three-dimensional roughness profile of the sidewall is typically ignored in such analyses. Aim: We study the response of a CD-SEM to sidewall roughness (SWR) by simulation. Approach: We generate...

journal article 2020

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Understanding the influence of 3D sidewall roughness on observed line-edge roughness in scanning electron microscopy images

van Kessel, L.C.P.M. (author), Huisman, T. (author), Hagen, C.W. (author)

Line-edge roughness (LER) is often measured from top-down critical dimension scanning electron microscope (CD-SEM) images. The true three-dimensional roughness profile of the sidewall is typically ignored in such analyses. We study the response of a CD-SEM to sidewall roughness (SWR) by simulation. We generate random rough lines and spaces,...

conference paper 2020

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Spin textures induced by quenched disorder in a reentrant spin glass: Vortices versus "frustrated" skyrmions

Mirebeau, I. (author), Martin, N (author), Deutsch, M. (author), Bannenberg, L.J. (author), Pappas, C. (author), Chaboussant, G. (author), Cubitt, R (author), Decorse, C. (author), Leonov, A.O. (author)

journal article 2018

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Extreme gusts and their role in wind turbine design

Bos, R. (author)

Wind turbines are the largest rotating machines on the planet, operating in some of the most remote and hostile areas. During a lifespan of several decades, they have to withstand storms, waves, and gusts (and preferably produce electricity in the process). Yet, designers cannot make them too strong. Every additional kilogram of mass has to be...

doctoral thesis 2017

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On an efficient multiple time step Monte Carlo simulation of the SABR model

Leitao Rodriguez, A. (author), Grzelak, L.A. (author), Oosterlee, C.W. (author)

In this paper, we will present a multiple time step Monte Carlo simulation technique for pricing options under the Stochastic Alpha Beta Rho model. The proposed method is an extension of the one time step Monte Carlo method that we proposed in an accompanying paper Leitao et al. [Appl. Math. Comput. 2017, 293, 461–479], for pricing European...

journal article 2017

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Simulation of shotnoise induced side-wall roughness in electron lithography

Verduin, T. (author), Lokhorst, S.R. (author), Hagen, C.W. (author), Kruit, P. (author)

We have developed a fast three dimensional Monte-Carlo framework for the investigation of shotnoise induced side-wall roughness (SWR) formation. The calculation outline is demonstrated by an example for an exposure of a 100nm thick layer of negative tone resist (NTR) resist on top of an infinitely thick silicon substrate. We use our home...

conference paper 2016

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Extreme bendability of DNA double helix due to bending asymmetry

Salari, H. (author), Eslami-Mossallam, B. (author), Nederi, S. (author), Ejtehadi, M.R. (author)

Experimental data of the DNA cyclization (J-factor) at short length scales exceed the theoretical expectation based on the wormlike chain (WLC) model by several orders of magnitude. Here, we propose that asymmetric bending rigidity of the double helix in the groove direction can be responsible for extreme bendability of DNA at short length...

journal article 2015

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An analytical equation of state for describing isotropic-nematic phase equilibria of Lennard-Jones chain fluids with variable degree of molecular flexibility

Van Westen, T. (author), Oyarzun Rivera, B.A. (author), Vlugt, T.J.H. (author), Gross, J. (author)

We develop an equation of state (EoS) for describing isotropic-nematic (IN) phase equilibria of Lennard-Jones (LJ) chain fluids. The EoS is developed by applying a second order Barker-Henderson perturbation theory to a reference fluid of hard chain molecules. The chain molecules consist of tangentially bonded spherical segments and are allowed...

journal article 2015

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Investment decisions under uncertainties: A case of nuclear power plants

Jain, S. (author)

This thesis discusses the role of flexibility of decisions when investing in projects that are affected by economic uncertainties. It uses the theory of real options to value such investment decisions. The thesis focuses on investment decisions related to nuclear power plants, which usually are affected by several sources of economic...

doctoral thesis 2014

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The isotropic-nematic phase transition of tangent hard-sphere chain fluids—Pure components

Van Westen, T. (author), Oyarzun, B. (author), Vlugt, T.J.H. (author), Gross, J. (author)

An extension of Onsager's second virial theory is developed to describe the isotropic-nematic phase transition of tangent hard-sphere chain fluids. Flexibility is introduced by the rod-coil model. The effect of chain-flexibility on the second virial coefficient is described using an accurate, analytical approximation for the orientation...

journal article 2013

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The phase behavior of linear and partially flexible hard-sphere chain fluids and the solubility of hard spheres in hard-sphere chain fluids

Oyarzun, B.A. (author), Van Westen, T. (author), Vlugt, T.J.H. (author)

he liquid crystal phase behavior of linear and partially flexible hard-sphere chain fluids and the solubility of hard spheres in hard-sphere chain fluids are studied by constant pressure Monte Carlo simulations. An extensive study on the phase behavior of linear fluids with a length of 7, 8, 9, 10, 11, 12, 13, 14, 15, and 20 beads is carried out...

journal article 2013

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An analytical approximation for the orientation-dependent excluded volume of tangent hard sphere chains of arbitrary chain length and flexibility

Van Westen, T. (author), Vlugt, T.J.H. (author), Gross, J. (author)

Onsager-like theories are commonly used to describe the phase behavior of nematic (only orientationally ordered) liquid crystals. A key ingredient in such theories is the orientation-dependent excluded volume of two molecules. Although for hard convex molecular models this is generally known in analytical form, for more realistic molecular...

journal article 2012

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Pulsed helium ion beam induced deposition: A means to high growth rates

Alkemade, P.F.A. (author), Miro, H. (author), Van Veldhoven, E. (author), Maas, D.J. (author), Smith, D.A. (author), Rack, P.D. (author)

The sub-nanometer beam of a helium ion microscope was used to study and optimize helium-ion beam induced deposition of PtC nanopillars with the (CH3)3Pt(CPCH3) precursor. The beam current, beam dwell time, precursor refresh time, and beam focus have been independently varied. Continuous beam exposure resulted in narrow but short pillars, while...

journal article 2011

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Model for nanopillar growth by focused helium ion-beam-induced deposition

Alkemade, P.F.A. (author), Chen, P. (author), Van Veldhoven, E. (author), Maas, D. (author)

An analytical model for the growth of nanopillars by helium ion-beam-induced deposition is presented and compared to experimental data. This model describes the competition between pillar growth in vertical and lateral directions. It assumes that vertical growth is induced by incident primary ions and type-1 secondary electrons, whereas lateral...

journal article 2010

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The persistence length of double stranded DNA determined using dark field tethered particle motion

Brinkers, S. (author), Dietrich, H.R.C. (author), De Groote, F.H. (author), Young, I.T. (author), Rieger, B. (author)

The wormlike chain model describes the micromechanics of semiflexible polymers by introducing the persistence length. We propose a method of measuring the persistence length of DNA in a controllable near-native environment. Using a dark field microscope, the projected positions of a gold nanoparticle undergoing constrained Brownian motion are...

journal article 2009

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Percolation transitions in two dimensions

Feng, X. (author), Deng, Y. (author), Blöte, H.W.J. (author)

We investigate bond- and site-percolation models on several two-dimensional lattices numerically, by means of transfer-matrix calculations and Monte Carlo simulations. The lattices include the square, triangular, honeycomb kagome, and diced lattices with nearest-neighbor bonds, and the square lattice with nearest- and next-nearest-neighbor bonds...

journal article 2008