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Comparing Robust Decision-Making and Dynamic Adaptive Policy Pathways for model-based decision support under deep uncertainty

Kwakkel, J.H. (author), Haasnoot, M. (author), Walker, W.E. (author)

A variety of model-based approaches for supporting decision-making under deep uncertainty have been suggested, but they are rarely compared and contrasted. In this paper, we compare Robust Decision-Making with Dynamic Adaptive Policy Pathways. We apply both to a hypothetical case inspired by a river reach in the Rhine Delta of the Netherlands...

journal article 2016

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Improved ADRC for a Maglev planar motor with a concentric winding structure

Kou, Baoquan (author), Xing, Feng (author), Zhang, Chaoning (author), Zhang, L. (author), Zhou, Yiheng (author), Wang, Tiecheng (author)

In the semiconductor industry, positioning accuracy and acceleration are critical parameters. To improve the acceleration speed of a motor, this paper proposes the moving-coil maglev planar motor with a concentric winding structure. The coordinate system has been built for the multiple degrees of freedom movement system. The Lorenz force...

journal article 2016

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The Robustness Value of Public Transport Development Plans

Cats, O. (author)

Investments in transport are increasingly motivated by the need to improve its robustness — the capacity to absorb disturbances with a minimal impact on system performance. Nonetheless, there is lack of knowledge on how to assess and quantify the robustness value of new investments. This study investigates the robustness of alternative public...

journal article 2016

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Maintenance-energy requirements and robustness of Saccharomyces cerevisiae at aerobic near-zero specific growth rates

Vos, T. (author), Hakkaart, X.D.V. (author), de Hulster, A.F. (author), van Maris, A.J.A. (author), Pronk, J.T. (author), Daran-Lapujade, P.A.S. (author)

Background: Saccharomyces cerevisiae is an established microbial platform for production of native and non-native compounds. When product pathways compete with growth for precursors and energy, uncoupling of growth and product formation could increase product yields and decrease formation of biomass as a by-product. Studying non-growing,...

journal article 2016

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Robustness assessment of link capacity reduction for complex networks: Application for public transport systems

Cats, O. (author), Koppenol, Gert Jaap (author), Warnier, Martijn (author)

Network robustness refers to as the capacity to absorb disturbances with a minimal impact on system performance. Notwithstanding, network robustness assessment has been mostly confined to the analysis of complete link breakdown based on topological metrics. We propose reliability indicators that encompass changes in network performance with...

journal article 2017

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Distributed monitoring for the prevention of cascading failures in operational power grids

Warnier, Martijn (author), Dulman, S.O. (author), Koc, Y. (author), Pauwels, E.J.E.M. (author)

Electrical power grids are vulnerable to cascading failures that can lead to large blackouts. The detection and prevention of cascading failures in power grids are important problems. Currently, grid operators mainly monitor the states (loading levels) of individual components in a power grid. The complex architecture of a power grid, with its...

journal article 2017

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An Automated System for the Detection and Classification of Retinal Changes Due to Red Lesions in Longitudinal Fundus Images

Adal, K.M. (author), Van Etten, Peter G. (author), Martinez, Jose P (author), Rouwen, Kenneth W. (author), Vermeer, K.A. (author), van Vliet, L.J. (author)

People with diabetes mellitus need annual screening to check for the development of diabetic retinopathy. Tracking small retinal changes due to early diabetic retinopathy lesions in longitudinal fundus image sets is challenging due to intra- and inter-visit variability in illumination and image quality, the required high registration accuracy...

journal article 2017

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Evaluating the robustness effects of infrastructure projects based on their topological and geometrical roadway designs

Snelder, M. (author), Wesseling, B. (author), van Arem, B. (author), Hertogh, M.J.C.M. (author)

When infrastructures projects are evaluated, it is not only important to evaluate them with models that represent the average daily situation, but also to evaluate them in case of irregular situations like incidents. This becomes especially relevant when various project alternatives are expected to show significantly different scores in case...

journal article 2017

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Design for value change

van de Poel, I.R. (author)

In the value sensitive design (VSD) literature, there has been little attention for how values may change during the adoption and use of a sociotechnical system, and what that implies for design. A value change taxonomy is proposed, as well as a number of technical features that allow dealing with value change.

journal article 2018

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Enhanced interconnection model in geographically interdependent networks

Rueda, Diego F. (author), Calle, Eusebi (author), Wang, X. (author), Kooij, Robert (author)

Interconnection between telecommunication networks and other critical infrastructures is usually established through nodes that are spatially close, generating a geographical interdependency. Previous work has shown that in general, geographically interdependent networks are more robust with respect to cascading failures when the...

journal article 2018

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Balancing Costs and Benefits in Selecting New Information: Efficient Monitoring Using Deterministic Hydro-economic Models

Raso, L. (author), Weijs, S. V. (author), Werner, M. (author)

Uncertainty reduces reliability and performance of water system operations. A decision-maker can take action, accepting the present uncertainty and facing its risks, or reduce uncertainty by first obtaining additional information. Information, however, comes at a cost. The decision-maker must therefore efficiently use his/her resources,...

journal article 2018

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A Comparative Study of Ontology Matching Systems via Inferential Statistics

Mohammadi, Majid (author), Hofman, Wout (author), Tan, Y. (author)

Comparing ontology matching systems are typically performed by comparing their average performances over multiple datasets. However, this paper examines the alignment systems using statistical inference since averaging is statistically unsafe and inappropriate. The statistical tests for comparison of two or multiple alignment systems are...

journal article 2018

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Discovering Clusters in Power Networks from Orthogonal Structure of Spectral Embedding

Tyuryukanov, I. (author), Popov, M. (author), van der Meijden, M.A.M.M. (author), Terzija, Vladimir (author)

This paper presents an integrated approach to partition similarity graphs, the task that arises in various contexts in power system studies. The approach is based on orthogonal transformation of row-normalized eigenvectors obtained from spectral clustering to closely fit the axes of the canonical coordinate system. We select the number of...

journal article 2018

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Modeling dynamics and adaptation at operational and structural scales for the ex-ante economic evaluation of large dams in an African context

Raso, L. (author), Barbier, Bruno (author), Bader, Jean Claude (author)

Dams can produce electricity and ensure water security, but at the same time they radically alter the hydrological regime of rivers with significant consequences for the economic and environmental welfare of the region in which they are located. Cost-benefit analysis (CBA) is currently the most frequently used framework for the economic...

journal article 2018

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Co-simulation framework of discrete element method and multibody dynamics models

Lommen, S.W. (author), Lodewijks, G. (author), Schott, D.L. (author)

Purpose: Bulk material-handling equipment development can be accelerated and is less expensive when testing of virtual prototypes can be adopted. However, often the complexity of the interaction between particulate material and handling equipment cannot be handled by a single computational solver. This paper aims to establish a framework for...

journal article 2018

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A Low-Cost Robust Distributed Linearly Constrained Beamformer for Wireless Acoustic Sensor Networks with Arbitrary Topology

Koutrouvelis, A. (author), Sherson, T.W. (author), Heusdens, R. (author), Hendriks, R.C. (author)

We propose a new robust distributed linearly constrained beamformer which utilizes a set of linear equality constraints to reduce the cross power spectral density matrix to a block-diagonal form. The proposed beamformer has a convenient objective function for use in arbitrary distributed network topologies while having identical performance...

journal article 2018

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Active vision via extremum seeking for robots in unstructured environments: Applications in object recognition and manipulation

Calli, B. (author), Caarls, W. (author), Wisse, M. (author), Jonker, P.P. (author)

In this paper, a novel active vision strategy is proposed for optimizing the viewpoint of a robot's vision sensor for a given success criterion. The strategy is based on extremum seeking control (ESC), which introduces two main advantages: 1) Our approach is model free: It does not require an explicit objective function or any other task...

journal article 2018

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On generalized windmill graphs

Kooij, Robert (author)

In this paper we will consider generalizations of the class of so-called windmill graphs, which were recently introduced by Estrada [6]. A windmill graph W(η,k) consists of η copies of the complete graph Kk, with every node connected to a common node. Estrada [6] showed that the clustering coefficient and the transitivity index of windmill...

journal article 2019

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Robustness of attractors in tapping mode atomic force microscopy

Chandrashekar, A. (author), Belardinelli, P. (author), Staufer, U. (author), Alijani, F. (author)

In this work, we perform a comprehensive analysis of the robustness of attractors in tapping mode atomic force microscopy. The numerical model is based on cantilever dynamics driven in the Lennard–Jones potential. Pseudo-arc-length continuation and basins of attraction are utilized to obtain the frequency response and dynamical integrity of...

journal article 2019

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Incremental Nonlinear Fault-Tolerant Control of a Quadrotor With Complete Loss of Two Opposing Rotors

Sun, Sihao (author), Wang, Xuerui (author), Chu, Q. P. (author), de Visser, C.C. (author)

In order to further expand the flight envelope of quadrotors under actuator failures, we design a nonlinear sensor-based fault-tolerant controller to stabilize a quadrotor with failure of two opposing rotors in the high-speed flight condition (>8 m/s). The incremental nonlinear dynamic inversion approach which excels in handling model...

journal article 2020