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Zhou, C. (author), van Nooijen, R.R.P. (author), Kolechkina, A.G. (author), Gargouri, E.F.G. (author), Slama, Fairouz (author), van de Giesen, N.C. (author)The dependency structure between hydrological variables is of critical importance to hydrological modelling and forecasting. When a copula capturing that dependence is fitted to a sample, information on the uncertainty of the fit is needed for subsequent hydrological calculations and reasoning. A new method is proposed to report inferential...journal article 2023
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Zhou, C. (author), van Nooijen, R.R.P. (author), Kolechkina, A.G. (author)The representation of uncertainty in results is an important aspect of statistical techniques in hydrology and climatology. Hypothesis tests and point estimates are not well suited for this purpose. Other statistical tools, such as confidence curves, are better suited to represent uncertainty. Therefore three parametric methods to construct...journal article 2023
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Van der Hucht, L.E. (author), van Nooijen, R.R.P. (author)This paper presents preliminary results on the application of a water management approach that includes the principles of Build Back Better (BBB) and explicitly considers the performance of a water system during the different phases of the disaster management cycle. As a case study, a small touristic island was taken that is faced with...journal article 2022
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Contreras Navarro, F.J. (author), van Nooijen, R.R.P. (author)Small islands that support urban communities provide a unique opportunity to study the urban water cycle, its energy needs, and possible links to renewable energy. In this paper, models for an energy generation system and the processes in the urban water cycle are formulated. These are combined and then used to determine optimal parameters...journal article 2022
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van der Heijden, T.J.T. (author), Lugt, D. (author), van Nooijen, R.R.P. (author), Palensky, P. (author), Abraham, E. (author)Participation in demand response (DR) has been explored for many large energy-using assets based on day ahead electricity markets. In this manuscript, we propose the use of multiple electricity spot markets to enable price-based DR for open canal systems in the Netherlands, where many large pumping stations are used for flood mitigation and...journal article 2022
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van Nooijen, R.R.P. (author), Kolechkina, A.G. (author)In almost all practical applications of control, technological and economical consid -erations impose limits on communication speed, frequency of communication, and frequency of actuator adjustment. Such limits turned the analysis of sampled data systems into a flourishing field. Water systems pose a particular challenge: the systems are...journal article 2021
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van Nooijen, R.R.P. (author), Kolechkina, A.G. (author)Networks of open channels form an important category of environmental systems. They are used not only to transport irrigation and drainage water, but also as highways for barges transporting raw materials and goods. Automatic control of these systems poses specific problems. A local stability analysis for an open canal that is split into...journal article 2021
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van Nooijen, R.R.P. (author), Kolechkina, A.G. (author)Management of water systems is becoming more and more complex; this creates opportunities for the application of control theory. These opportunities are the subject of a course on operational water management given to students of the water management department, Delft University of Technology, over the past 15 years. Traditional examples in...journal article 2021
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Zhou, C. (author), van Nooijen, R.R.P. (author), Kolechkina, A.G. (author), van de Giesen, N.C. (author)In this paper, a method based on Approximate Empirical likelihood ratio and a Deviance function combined with bootstrapping (AED-BP) is proposed to construct a confidence curve for the location of a change point. The method is compared with a method based on parametric Profile Likelihood and a Deviance function combined with Monte Carlo...journal article 2020
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- van Nooijen, R.R.P. (author), Kolechkina, A.G. (author) poster 2019
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- van Nooijen, R.R.P. (author), Kolechkina, A.G. (author), Zhou, C. (author) abstract 2019
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Blöschl, Günter (author), Bierkens, Marc F.P. (author), Savenije, Hubert (author), Bogaard, T.A. (author), Hrachowitz, M. (author), Kolechkina, A.G. (author), Pande, S. (author), van der Ent, R.J. (author), van Nooijen, R.R.P. (author)This paper is the outcome of a community initiative to identify major unsolved scientific problems in hydrology motivated by a need for stronger harmonisation of research efforts. The procedure involved a public consultation through online media, followed by two workshops through which a large number of potential science questions were collated,...journal article 2019
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Zhou, C. (author), van Nooijen, R.R.P. (author), Kolechkina, A.G. (author), Hrachowitz, M. (author)Several commonly-used nonparametric change-point detection methods are analysed in terms of power, ability and accuracy of the estimated change-point location. The analysis is performed with synthetic data for different sample sizes, two types of change and different magnitudes of change. The methods studied are the Pettitt method, a method...journal article 2019
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van Nooijen, R.R.P. (author), Kolechkina, A.G. (author)Many Dutch sewer networks are combined sewer systems, they carry both storm<br/>water and foul water. They consist of multiple sub-networks, linked by pumps into a tree structure with the Waste Water Treatment Plant as its root. Within sub-networks sewage transport is by gravity driven flow. Usually the original design assumed local control....conference paper 2018
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Nijzink, R.C. (author), Almeida, S. (author), Pechlivanidis, I. G. (author), Capell, R. (author), Gustafssons, D. (author), Arheimer, B. (author), Parajka, J. (author), Freer, J. (author), Han, D. (author), Wagener, T. (author), van Nooijen, R.R.P. (author), Savenije, Hubert (author), Hrachowitz, M. (author)The calibration of hydrological models without streamflow observations is problematic, and the simultaneous, combined use of remotely sensed products for this purpose has not been exhaustively tested thus far. Our hypothesis is that the combined use of products can (1) reduce the parameter search space and (2) improve the representation of...journal article 2018
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van Nooijen, R.R.P. (author), Kolechkina, A.G. (author)Arguments are presented in favor of modeling sewer systems and in particular Dutch sewer systems as a sampled data system with events. Basic limitations on controlling these systems when ignoring their hybrid nature are stated. The traditional control scheme for the Dutch systems is given as an example of event driven local control. Basic...journal article 2018
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van Nooijen, R.R.P. (author), Kolechkina, A.G. (author)The problem of smoothing dry weather inflow variations for<br/>a Waste Water Treatment Plant (WWTP) that receives sewage from<br/>multiple mixed sewer systems is presented, together with a first rough<br/>solution algorithm. A simplification followed by a naive translation into<br/>a zero-one linear programming problem results in 1152...abstract 2016
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van Nooijen, R.R.P. (author), Kolechkina, A.G. (author)In [1,2] Kulisch defines (ordered) ringoids and vectoids to provide a theoretical basis for computer arithmetic and interval arithmetic. One interesting aspect of his treatment is the search for necessary and sufficient conditions for a meaningful notion of negation and zero. In this paper we consider this both from the point of view of...abstract 2016
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van Nooijen, R.R.P. (author), Kolechkina, A.G. (author)In sewer systems sewage from different areas is often treated in a shared Waste Water Treatment Plant (WWTP). Currently the flows from different areas are usually determined by needs local to that area. During dry weather this may result in large variations in the flow into the WWTP. There are two reasons why this may be undesirable. Due to...journal article 2016
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- van Nooijen, R.R.P. (author), Kolechkina, A.G. (author), van Velzen, E (author), van Leeuwen, P (author) conference paper 2012