Searched for: subject:"coordination"
(1 - 20 of 39)

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van de Weg, Goof Sterk (author), Vu, Hai L. (author), Hegyi, A. (author), Hoogendoorn, S.P. (author)
In this paper, we develop a hierarchical approach to optimize the signal timings in an urban traffic network taking into account the different dynamics in all traffic regimes. The proposed hierarchical control framework consists of two layers. The first layer--the network coordination layer--uses a model predictive control strategy based on a...
journal article 2018
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Ma, Wanjing (author), Zou, Li (author), Dai, Kun (author), Gartner, Nathan H. (author), Wang, M. (author)
Arterial traffic signal coordination makes traffic flow more efficient and safer. This paper presents a partition-enabled multi-mode band (PM-BAND) model that is designed to solve the signal coordination problem for arterials with multiple modes, i.e., passenger cars and transit vehicles. The proposed method permits the progression bands to...
journal article 2018
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Mahajan, V.V. (author), Nijssen, Tim M.J. (author), Kuipers, J. (author), Padding, J.T. (author)
Fluidised beds are used in a variety of processes because of their favourable mass and heat transfer characteristics. In this and many other processes, non-spherical particles are commonplace, which can drastically affect the fluidisation behaviour. In this study, we use numerical models to study non-spherical fluidisation behaviour in detail...
journal article 2018
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Khalilnezhad, H. (author), Popov, M. (author), van der Sluis, L. (author), Ametani, A. (author)
Energization overvoltages are among the severest overvoltages stressing insulations of EHV power system components. Since these overvoltages have a statistical nature, the insulation level should be determined with the use of a statistical approach by which the distribution of overvoltages is calculated. Literature has properly studied the...
journal article 2018
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Mulders, S.P. (author), Pamososuryo, Atindriyo Kusumo (author), Disario, Gianmarco Emilio (author), van Wingerden, J.W. (author)
With the trend of increasing wind turbine rotor diameters, the mitigation of blade fatigue loadings is of special interest to extend the turbine lifetime. Fatigue load reductions can be partly accomplished using individual pitch control (IPC) facilitated by the so-called multiblade coordinate (MBC) transformation. This operation transforms...
journal article 2018
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Vermolen, F.J. (author), Segal, A. (author)
In finite-element computations, one often needs to calculate integrals of products of powers of monomials over simplexes. In this manuscript, we prove a generalisation of the exact integration formula that was reported and proved for two-dimensional simplexes by Holand & Bell in 1969. We extend the proof to n-dimensional simplexes and to...
journal article 2018
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Laskaris, Georgios (author), Cats, O. (author), Jenelius, Erik (author), Rinaldi, Marco (author), Viti, Francesco (author)
In transit corridors, multiple lines share a sequence of consecutive stops to provide higher joint frequency in higher demand areas. A key challenge is to coordinate the transition from single line to joint operation. A holding control strategy aimed at minimizing passenger travel times is introduced for lines merging into a shared corridor,...
journal article 2018
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Susha, Iryna (author), Janssen, M.F.W.H.A. (author), Verhulst, Stefaan (author)
Purpose: In “data collaboratives”, private and public organizations coordinate their activities to leverage data to address a societal challenge. This paper aims to focus on analyzing challenges and coordination mechanisms of data collaboratives. Design/methodology/approach: This study uses coordination theory to identify and discuss the...
journal article 2017
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Casakin, Hernan (author), Badke-Schaub, P.G. (author)
This study deals with the role of mental models in the coordination of team activities during design problem-solving. The work centers on the sharedness of mental models in a design team setting, mainly on the interaction between an architect and two clients. A major goal is to gain insight into how modifications in mental models affect...
journal article 2017
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Yuan, K. (author), Knoop, V.L. (author), Hoogendoorn, S.P. (author)
On freeways, congestion always leads to capacity drop. This means the queue discharge rate is lower than the pre-queue capacity. Our recent research findings indicate that the queue discharge rate increases with the speed in congestion, that is the capacity drop is strongly correlated with the congestion state. Incorporating this varying...
journal article 2017
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van de Walle, B.A. (author), Brugghemans, Bert (author), Comes, M. (author)
In responding to an emergency, the actions of emergency response teams critically depend upon the situation awareness the team members have acquired. Situation awareness, and the design of systems to support it, has been a focus in recent emergency management research. In this paper, we introduce two interventions to the core processes of...
journal article 2016
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Velsink, H. (author)
Adjustment and testing of a combination of stochastic and nonstochastic observations is applied to the deformation analysis of a time series of 3D coordinates. Nonstochastic observations are constant values that are treated as if they were observations. They are used to formulate constraints on the unknown parameters of the adjustment problem...
journal article 2016
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Latif, Aadil (author), Gawlik, Wolfgang (author), Palensky, P. (author)
With increasing photovoltaic (PV) penetration in low voltage networks (LVNs), voltage regulation is a challenge. Active power curtailment (APC) is one possible solution for mitigating over voltages resulting from active power injection in LVNs. There is an inherent unfairness in the APC scheme. When generation is high and consumption is low, the...
journal article 2016
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Rezaee, S.A. (author), Oey, M.A. (author), Nevejan, C.I.M. (author), Brazier, F.M. (author)
Introducing the notion of Participatory Demand-Supply (PDS) systems as socio-technical systems, this paper focuses on a new approach to coordinating demand and supply in dynamic environments. A participatory approach to demand and supply provides a new frame of reference for system design, for which the engagement of all stakeholders plays an...
journal article 2015
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Rueda Torres, J.L. (author), Gonzalez-Longatt, F. (author)
This paper introduces an approach based on the Swarm Variant of the Mean-Variance Mapping Optimization (MVMO-S) to solve the multi-scenario formulation of the optimal placement and coordinated tuning of power system supplementary damping controllers (POCDCs). The effectiveness of the approach is evaluated based on the classical IEEE 39-bus (New...
journal article 2015
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Groenleer, M.L.P. (author), Mijs, A. (author), Ten Heuvelhof, E.F. (author), Meeuwen, B. (author), Van der Puil, J. (author)
A key challenge that European decision-makers struggle with today is regulating and governing the European financial and economic system in a way that is both effective and legitimate. To help address this challenge, this paper asks why regulatory gaps occurred and European governance has been weak, and how these gaps and weaknesses allowed...
journal article 2014
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Brous, P.A. (author), Overtoom, I. (author), Herder, P.M. (author), Versluis, A. (author), Janssen, M.F.W.H.A. (author)
Data infrastructures represent information about physical reality. As reality changes, data infrastructures might also be subject to change. Researchers have increasingly approached physical infrastructures as being complex adaptive systems (CAS). Although physical infrastructures are often approached as CAS, the underlying data infrastructures...
journal article 2014
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Platzek, F.W. (author), Stelling, G.S. (author), Jankowski, J.A. (author), Pietrzak, J.D. (author)
Three-dimensional hydrodynamic z-layer models, which are used for simulating the flow in rivers, estuaries, and oceans, suffer from an inaccurate and often discontinuous bottom shear stress representation, due to the staircase bottom. We analyze the governing equations and clearly show the cause of the inaccuracies. Based on the analysis, we...
journal article 2014
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Corman, F. (author), D'Ariano, A. (author), Pacciarelli, D. (author), Pranzo, M. (author)
Railway dispatchers reschedule trains in real-time in order to limit the propagation of disturbances and to regulate traffic in their respective dispatching areas by minimizing the deviation from the off-line timetable. However, the decisions taken in one area may influence the quality and even the feasibility of train schedules in the other...
journal article 2011
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Khodabandeh, A. (author), Amiri-Simkooei, A.R. (author), Sharifi, M.A. (author)
The efficacy of robust M-estimators is a well-known issue when dealing with observational blunders. When the number of observations is considerably large—long time series for instance—one can take advantage of the asymptotic normality of the M-estimation and compute reasonable estimates for the unknown parameters of interest. A few leading M...
journal article 2011
Searched for: subject:"coordination"
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