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Van Nes, A. (author)
In urban research, spatial and social concepts of centrality are being distinguished. From a spatial point of view, metrical centrality implies that something is located in the middle of an area. However, metrical and topological centrality are not equivalent. In research where space syntax methods are applied, topological centrality implies...
conference paper 2007
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Read, S. (author)
The Flat City space syntax model (Read, 2005), proposes that a structure of the environment is generated in the processes of definition and use of places by people in movement. These processes presuppose a dynamic embedding of subjects in environment, the production of a ‘structure of inhabitation’ of the urban landscape in movement, and a...
conference paper 2007
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Schweckendiek, T. (author), Courage, W.M.G. (author), Van Gelder, P.H.A.J.M. (author)
The Finite Element Method is well accepted in design practice nowadays. It can be used for modeling complex structures and systems. The constitutive models are improving, which enables us to make more accurate predictions of the real world behavior. On the other hand, especially in the field of geotechnical engineering, the uncertainties in the...
conference paper 2007
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Op 't Land, M. (author), Proper, H.A. (author)
Increasingly, organizations make use of enterprise architectures to direct the development of the enterprise as a whole and the development of their IT portfolio in particular. This steering and directing is done by means of principles, which are essentially regarded as constraints on the design space for enterprise engineers, thus guiding them...
conference paper 2007
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Van Mieghem, P. (author)
conference paper 2007
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Hoan, N.T. (author), Booij, R. (author), Hofland, B. (author), Stive, M.J.F. (author), Verhagen, H.J. (author)
The current research is aimed at finding a proper relation between flow forces acting on the bed and the bed response. To this end, experiments were carried out in which both the bed response (quantified by a dimensionless entrainment rate) and the flow field (velocity and turbulence intensity distributions) are measured. The three available...
conference paper 2007
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Podgaets, A.R. (author), Ockels, W.J. (author)
Closed loop Laddermill flight control problem is considered in this paper. Laddermill is a high altitude kites system for energy production. The kites have been simulated as rigid bodies and the cable as a thin elastic line. Euler angles and cable speed are controls. Flight control is written as a fusion of two approaches: design of experiments...
conference paper 2007
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Steenhuisen, J.R. (author), Witteveen, C. (author)
conference paper 2007
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Durmisevic, S. (author), Sariyildiz, I.S. (author), Ciftcioglu, O. (author)
conference paper 2007
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De Weerdt, M.M. (author), Zhang, Y. (author), Klos, T. (author)
This paper proposes a new variant of the task allocation problem, where the agents are connected in a social network and tasks arrive at the agents distributed over the network. We show that the complexity of this problem remains NPhard. Moreover, it is not approximable within some factor. We develop an algorithm based on the contract-net...
conference paper 2007
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Verwer, S.E. (author), De Weerdt, M.M. (author), Witteveen, C. (author)
We describe an algorithm for learning simple timed automata, known as real-time automata. The transitions of real-time automata can have a temporal constraint on the time of occurrence of the current symbol relative to the previous symbol. The learning algorithm is similar to the redblue fringe state-merging algorithm for the problem of learning...
conference paper 2007
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Steenhuisen, J.R. (author), De Weerdt, M.M. (author), Witteveen, C. (author)
In crisis response, hierarchical organizations are being replaced by dynamic assemblies of autonomous agents that promise more agility. However, these autonomous agents might cause a decrease in effectiveness when individually constructed plans for moderately-coupled tasks are not jointly feasible. Existing coordination techniques can be applied...
conference paper 2007
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Slysz, W. (author), Wegrzecki, M. (author), Bar, J. (author), Grabiec, P. (author), Gorska, M. (author), Reiger, E. (author), Dorenbos, S. (author), Zwiller, V. (author), Milostnaya, I. (author), Minaeva, O. (author)
We have fabricated fiber-coupled superconducting single-photon detectors (SSPDs), designed for quantum-correlationtype experiments. The SSPDs are nanostructured (~100-nm wide and 4-nm thick) NbN superconducting meandering stripes, operated in the 2 to 4.2 K temperature range, and known for ultrafast and efficient detection of visible to...
conference paper 2007
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Zevenbergen, J.A. (author), Ploeger, H.D. (author)
conference paper 2007
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Zevenbergen, J.A. (author)
conference paper 2007
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Ploeger, H.D. (author)
conference paper 2007
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Ploeger, H.D. (author)
conference paper 2007
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Van der Hofstad, R. (author), Hooghiemstra, G. (author), Van Mieghem, P. (author)
The minimal weight of the shortest path tree in a complete graph with independent and exponential (mean 1) random link weights, is shown to converge to a Gaussian distribution. We prove a conditional central limit theorem and show that the condition holds with probability converging to 1.
conference paper 2007
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Tadema, J. (author), Theunissen, E. (author), Koeners, J. (author)
The guidance information that is available to the UAV operator typically suffers from limitations of data update rate and system latency. Even when using a flight director command display, the manual control task is considerably more difficult compared to piloting a manned aircraft. Results from earlier research into perspective guidance...
conference paper 2007
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Peters, R.J.M. (author), Marquering, H.A. (author), Dogan, H. (author), Hendriks, E.A. (author), De Roos, A. (author), Reiber, J.H.C. (author), Stoel, B.C. (author)
Contrast-enhanced CT Angiography has become an accepted diagnostic tool for detecting Pulmonary Embolism (PE). The CT obstruction index proposed by Qanadli, which is based on the number of obstructed arterial segments, enables the quantification of PE severity. Because the required manual identification of twenty arterial segments is time...
conference paper 2007
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