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Yao, W. (author), Chen, X. (author), Zhao, Y. (author), Van Tooren, M.J.L. (author)To comprehensively assess fractionated spacecraft, an assessment tool is developed based on lifecycle simulation under uncertainty driven by modular evolutionary stochastic models. First, fractionated spacecraft nomenclature and architecture are clarified, and assessment criteria are analyzed. The mean and standard deviation of risk adjusted...journal article 2012
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Taneja, P. (author), Ligteringen, H. (author), Walker, W.E. (author)Recently, flexibility has received much attention from port researchers, designers, and managers. This is because the stability of the competitive environment of the past has been replaced by increasing uncertainty. The current economic crisis and the recent trends in ports and shipping sectors are causing port planners to rethink their approach...journal article 2012
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Máhr, T. (author)In this thesis, the main focus is on the study of a real-world transportation problem with uncertainties, and on the comparison of a centralized and a distributed solution approach in the context of this problem. We formalize the real-world problem, and provide a general framework to extend it with different sources of uncertainty. We apply...doctoral thesis 2011
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Roggema, R.E. (author)Current spatial planning and design practice regards urban and rural spatial systems as simple systems. The proposed design strategies are often one-dimensional, one-problem and one-solution oriented. As a consequence, they often decrease the flexibility of urban systems to cope with uncertainty and the occurrence of weather extremes. Spatial...conference paper 2011
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Pruyt, E. (author), Segers, J. (author), Oruc, S. (author)In this ever more complex, interconnected, and uncertain world, leadership is needed more than ever. But the literature and most leaders largely ignore dynamic complexity and deep uncertainty: only futures characterized by ever faster change, ever more (required) flexibility, and ever more scarcity (especially in terms of highly qualified human...conference paper 2011
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Zerjav, V. (author), Hartmann, T. (author), Boes, J. (author)Although a substantial amount of literature advocates the integrated collaborative design processes for construction projects, very little explicit knowledge exists about the impact of the integrated processes on project uncertainty. In contrast with construction site processes, which can in most cases be organized as a sequence of tasks...conference paper 2011
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Bijlsma, R.M. (author), Bots, P.W.G. (author), Wolters, H.A. (author), Hoekstra, A.Y. (author)Stakeholder participation is advocated widely, but there is little structured, empirical research into its influence on policy development. We aim to further the insight into the characteristics of participatory policy development by comparing it to expert-based policy development for the same case. We describe the process of problem framing and...journal article 2011
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Kwakkel, J.H. (author)The treatment of uncertainty in the long-term planning of infrastructures in general and of mainports such as airports and seaports is a key challenge for decisionmakers. Moreover, these uncertainties have increased over the last decades due to changes in owner structure, changes in rules and regulations, and the ever increasing connectedness of...doctoral thesis 2010
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Kwakkel, J.H. (author), Walker, W.E. (author), Marchau, V.A.W.J. (author)Airport Strategic Planning (ASP) focuses on the development of plans for the long-term development of an airport. The dominant approach for ASP is Airport Master Planning (AMP). The goal of AMP is to provide a detailed blueprint for how the airport should look in the future, and how it can get there. Since a Master Plan is a static detailed...journal article 2010
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Taneja, P. (p.taneja@tudelft.nl) (author), Ligteringen, H. (h.ligteringen@tudelft.nl) (author), Walker, W.E. (w.e.walker@tudelft.nl) (author)Recently, flexibility has received much attention from port researchers, designers, and managers. That is because the stability of the competitive environment of the past has been replaced by increasing uncertainty. The current economic crisis and the recent trends in ports and shipping sectors are causing port planners to rethink their approach...conference paper 2010
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Ligtvoet, A. (author)Future price developments and availability of energy resources are uncertain. Therefore, developers of energy infrastructures will have to consider different scenarios in their planning. Moreover, the implementation of large infrastructures requires the cooperation of several actors, which adds to the uncertainty. In this paper we describe the...conference paper 2010
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Leijten, M. (author), Koppenjan, J.F.M. (author), Ten Heuvelhof, E.F. (author), Veeneman, W.W. (author), Van der Voort, H.G. (author)Due to the uncertainty involved in many complex infrastructure engineering projects, it is not always possible for managers to establish detailed terms of reference at the departure. Although the flexibility of ‘open’ terms of reference is often indispensible, it makes the arrival at a successful outcome much of a gamble. Complex infrastructure...journal article 2010
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Bouarfa, L. (author), Jonker, P.P. (author), Dankelman, J. (author)Recognizing and understanding surgical high-level tasks from sensor readings is important for surgical workflow analysis. Surgical high-level task recognition is also a challenging task in ubiquitous computing because of the inherent uncertainty of sensor data and the complexity of the operating room environment. In this paper, we present a...journal article 2010
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Bakker, S.A. (author)For a proposed liquefied natural gas export facility, Olokola LNG (OKLNG), located at the western limits of the Niger Delta in Nigeria a 10 km long and 17 m deep approach channel is designed for tankers to reach the terminal at the shoreline. Mud is expected to be deposited in the channel because of the persistent swell climate which mobilizes...master thesis 2009
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- Nizami, M. (author) master thesis 2009
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Marchau, V. (author), Walker, W. (author), Van Duin, R. (author)Urban transport is facing an increasing number of problems. Innovative technological solutions have been proposed for many of these problems. The implementation of these solutions, however, is surrounded by many uncertainties—for example, future relevant developments for urban transport demand and supply, the possible consequences of these...journal article 2009
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Ten Veldhuis, J.A.E. (author), Clemens, F.H.L.R. (author), Van Gelder, P.H.A.J.M. (author)Traditional methods to evaluate flood risk mostly focus on storm events as the main cause of flooding. Fault tree analysis is a technique that is able to model all potential causes of flooding and to quantify both the overall probability of flooding and the contributions of all causes of flooding to the overall flood probability. This paper...conference paper 2008
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Fenicia, F. (author)This thesis describes an approach to model development based on the concept of iterative model improvement, which is a process where by trial and error different hypotheses of catchment behaviour are progressively tested, and the understanding of the system proceeds through a combined process of modelling and experimenting. We show a number of...doctoral thesis 2008
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Den Heijer, C. (author), Reniers, A.J.H.M. (author), Van de Graaff, J. (author), Van Gelder, P.H.A.J.M. (author)Coastal dunes protect low lying coastal areas against the sea. Extreme waves and water levels during severe storms may cause breaching of the dunes. Consequently, serious damage due to flooding and direct wave attack could occur, resulting in loss of life and property. Proper coastal management implies that reinforcement measures will be taken...conference paper 2008
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Den Heijer, C. (author), Van de Graaff, J. (author), Van Gelder, P.H.A.J.M. (author)Coastal dunes protect low lying coastal areas against the sea. Extreme waves and water levels during severe storms may cause breaching of the dunes. Consequently, serious damage due to flooding and direct wave attack could occur, resulting in loss of life and property. Proper coastal management implies that reinforcement measures will be taken...conference paper 2008