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Wiebenga, J.H. (author), Van den Boorgaard, A.H. (author), Klaseboer, G. (author)The coupling of finite element simulations to mathematical optimization techniques has contributed significantly to product improvements and cost reductions in the metal forming industries. The next challenge is to bridge the gap between deterministic optimization techniques and the industrial need for robustness. This paper introduces a...journal article 2012
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Haasnoot, M. (author), Kwakkel, J.H. (author), Walker, W.E. (author)Water management in river deltas is increasingly being challenged by pressures from population growth, sea level rise, increasing variability in river runoffs, and potential climate change. Adaptation to such changes is not only determined by what is known or anticipated at present, but also by what will be experienced and learned as the future...conference paper 2012
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Kwakkel, J.H. (author), Timmermans, J.S. (author)In the Nature article ‘A safe operating space for humanity’, Rockström et al. (2009) introduce the concept of a safe operating space for humanity. A safe operating space is the space for human activities that will not push the planet out of the ‘Holocene state’ that has seen human civilizations arise, develop, and thrive. Rockström et al. have...conference paper 2012
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Eker, S. (author), Van Daalen, C. (author)The natural gas production in the Netherlands is estimated to decline significantly in the coming 25 years. This situation has led producers to consider alternatives such as unconventional gas resources which are successfully utilized in the US and debated all over the world. However, despite the substantial initial resource estimates,...conference paper 2012
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Gersonius, B. (author)This dissertation presents a potential way forward for adaptation to climate change, termed the resilience approach. This approach takes a dynamic perspective on adaptive processes and the effects of these processes at/across different spatio-temporal scales. Experience is provided with four methods that can be used to apply the resilience...doctoral thesis 2012
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Rijcken, T. (author), Stijnen, J. (author), Slootjes, N. (author)The Dutch Delta Program is currently developing new government policies for flood protection and fresh water supply. Decision support instruments have to address the program’s technical and political complexity. The water system functions are highly interwoven and would benefit from an integrated approach on a national level, with decisions...journal article 2012
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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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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