Searched for: collection%3Air
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Booij, A. (author), Hillen, M.M. (author), Santema, S.C. (author)
SMART formulation is an essential aspect of the Best Value philosophy to demonstrate performance, evaluate proposals and is required for the continuous improvements within organizations. Based on an evaluation of projects that have been tendered with the BVP award mechanism, it was concluded that both for the tender documents, as the interviews...
journal article 2013
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Booij, M. (author)
Being one of the premium German car brands, Audi has a long-standing “Leichtbau” tradition. Living up to the company motto “Vorsprung durch Technik”, Audi is currently working on implementing CFRP in cars such as the S7, A8 and R8. In a combined internship and thesis project in Neckarsulm, Germany, I assessed the performance and cost of...
journal article 2013
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Van Esse, W.R. (author), Perrin, C. (author), Booij, M.J. (author), Augustijn, D.C.M. (author), Fenicia, F. (author), Kavetski, D. (author), Lobligeois, F. (author)
Models with a fixed structure are widely used in hydrological studies and operational applications. For various reasons, these models do not always perform well. As an alternative, flexible modelling approaches allow the identification and refinement of the model structure as part of the modelling process. In this study, twelve different...
journal article 2013
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Van Esse, W.R. (author), Perrin, C. (author), Booij, M.J. (author), Augustijn, D.C.M. (author), Fenicia, F. (author), Lobligeois, F. (author)
In hydrological studies models with a fixed structure are commonly used. For various reasons, these models do not always perform well. As an alternative, a flexible modelling approach could be followed, where the identification of the model structure is part of the model set-up procedure. In this study, the performance of twelve different...
journal article 2013
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Hoan, N.T. (author), Stive, M.J.F. (author), Booij, R. (author), Hofland, B. (author), Verhagen, H.J. (author)
This paper presents the results of an experimental study on stone stability under nonuniform turbulent flow, in particular expanding flow. Detailed measurements of both flow and turbulence and the bed stability are described. Than various manners of quantifying the hydraulic loads exerted on the stones on a bed are extensively reviewed and...
journal article 2011
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Beekman, F.J. (author), Vastenhouw, B. (author), Van der Wilt, G. (author), Vervloet, M. (author), Visscher, R. (author), Booij, J. (author), Gerrits, M. (author), Ji, C. (author), Ramakers, R. (author), Van der Have, F. (author)
With the steadily improving resolution of novel small-animal single photon emission computed tomography (SPECT) and positron emission tomography devices, highly detailed phantoms are required for testing and optimizing these systems. We present a three-dimensional (3-D) digital and physical phantom pair to represent, e.g., cerebral blood flow,...
journal article 2009
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Jongen, C. (author), De Bruin, K. (author), Beekman, F.J. (author), Booij, J. (author)
Purpose: The dopamine D2 receptor (D2R) is important in the mediation of addiction. [123I]iodobenzamide (IBZM), a SPECT ligand for the D2R, has been used for in vivo studies of D2R availability in humans, monkeys, and rats. Although mouse models are important in the study of addiction, [123I]IBZM has not been used in mice SPECT studies. This...
journal article 2008
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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 evaluating the applicability of a numerical flow model to predict bed damage. First, an experimental study was carried out to get more inside into the relation between flow forces acting on a bed and the bed response (damage). The experiments were then used as the basis for the evaluation. Second, the flow was...
conference paper 2008
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Hoan, N.T. (author), Booij, R. (author), Stive, M.J.F. (author), Verhagen, H.J. (author)
The velocity and turbulence distributions of decelerating open-channel flow in a gradual expansion were measured using LDV equipment. The results show that the logarithmic law can describe the mean velocity in the bottom region well while the Coles’ law can be applied to the outer region. The shear velocity can be determined both by the...
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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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 dimensionless stability parameter for non-uniform flow in which the effect of turbulence is incorporated. 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...
conference paper 2007
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Meeder, M. (author), Mauret, T. (author), Booij, S. (author), Braat, J. (author), Faehnle, O. (author)
The possibilities of iTIRM, an in-process surface measurement tool, are explored in this research. Experiments are done to test the applicability for qualifying and optimising finishing processes for optical surfaces. Several optical glasses, different polishing agents and ductile grinding are included in these experiments. It is concluded that...
conference paper 2003
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Booij, S.M. (author), Fähnle, O.W. (author), Meeder, M. (author), Wons, T. (author), Braat, J.J.M. (author)
A variation on the fluid jet polishing (FJP) technique, arbitrarily named Jules Verne (JV), will be described in this article. Jules Verne is a glass processing technique that removes material due to the fact that the tool and the surface are in close contact, and a slurry moves in between the tool and the surface. This approach has both...
conference paper 2003
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Booij, S.M. (author)
The goal of this thesis research was to investigate the possibilities and limitations of the Fluid Jet Polishing (FJP) technique. FJP is a new optical fabrication technique that is capable of making shape corrections and reducing the surface roughness of glass and other materials. The principle of operation is that a mixture of water and...
doctoral thesis 2003
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Holthuijsen, L.H. (author), Booij, N. (author), Haagsma, Y.G. (author), Kieftenburg, A.T.M.M. (author), Kriezi, E. (author)
This report briefly describes the development of the SWAN model compared to the previous authorized version, SWAN 40.01. The most recent version of SWAN, SWAN 40.11 Cycle III was released on the 26th of October 2000.
report 2001
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Stelling, G.S. (author), Booij, N. (author)
Lecture notes CT wa4340. Derivation of equations using balance principles; numerical treatment of ordinary differential equations; time dependent partial differential equations; the strucure of a computer model:DUFLO; usage of numerical models.
lecture notes 1999
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Battjes, J.A. (author), Booij, N. (author), Hooimeijer, M.A. (author)
lecture notes 1999
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Booij, R. (author)
Deze notitie beschrijft de resultaten van een inleidend onderzoek naar de mechanismen van de erosie van de basislaag onder geometrisch open filters. Hierbij wordt in eerste instantie uitgegaan van de beter onderzochte erosie van de bodem van een waterloop zonder beschermende filterlaag. Op basis van metingen van Van Os (1998) in een inleidend...
report 1998
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Schiereck, G.J. (author), Booij, N. (author)
There is an increasing awareness of the role of mangrove forests in coastal ecosystems and coastal protection. At the transition between ocean and land, they have to absorb the energy that comes from the motion of the water. Little quantitative in formation is available, however, on wave transmission in these forests. In this paper the...
conference paper 1995
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Holthuijsen, L.H. (author), Eldeberky, Y. (author), Booij, N. (author), Ferier, P. (author)
The maximum possible wave conditions along the Dutch coast, which seem to be dominated by the limited water depth, have been estimated in the present study with numerical simulations. Discussions with meteorologists suggest that the maximum possible sustained wind speed in North Sea conditions is between 40 and 50 m/s (roughly equal to the wind...
report 1995
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