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Wijngaarden, N.J. van (author)
report 1971
document
Boiten, W. (author)
report 1979
document
Wijngaarden, N.J. van (author)
report 1980
document
van Schaik, F.J. (author), Storm van Leeuwen, S. (author)
The transducer selection process as applied to the F29 digital data-acquisition system is discussed in detail. The selection procedure consists of interviews of the users of the system, specification of the transducer part of the data-acquisition system, transducer selection from manufacturer data, evaluation tests, integration into the data...
report 1981
document
Karelse, M. (author)
report 1981
document
Boiten, W. (author)
report 1985
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Rodi, W. (author), Bonnin, J.C. (author), Buchal, T. (author)
This document contains the calculation results for 5 test cases and the description of calculation methods submitted to the ERCOFTAC Workshop on Data Bases and Testing of Calculation Methods for Turbulent Flows held in Karlsruhe from April 3 to 7, 1995. The workshop was an outcome and marked the end of the research project "Data Validation and...
report 1995
document
Boogaard, H.F.P. van den (author)
report 1996
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Groot, F. de (author)
report 1996
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Van der Horn, G. (author)
doctoral thesis 1997
document
Sloff, C.J. (author), Mosselman, E. (author)
report 1998
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Clemens, F.H.L.R. (author)
doctoral thesis 2001
document
Meijer, S.C.F. (author)
This thesis describes the full-scale validation and calibration of a integrated metabolic activated sludge model for biological phosphorus removal. In chapters 1 and 2 the metabolic model is described, in chapters 3 to 6 the model is tested and in chapters 7 and 8 the model is put into practice. Chapter 1 is a general introduction to this...
doctoral thesis 2004
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Baselmans, J.J.A. (author), Baryshev, A. (author), Reker, S.F. (author), Hajenius, M. (author), Gao, J.R. (author), Klapwijk, T.M. (author), Vachtomin, Y. (author), Maslennikov, S. (author), Antipov, S. (author), Voronov, B. (author), Gol'tsman, G. (author)
We measure the direct detection effect in a small volume (0.15??m×1??m×3.5?nm) quasioptical NbN phonon cooled hot electron bolometer mixer at 1.6?THz. We find that the small signal sensitivity of the receiver is underestimated by 35% due to the direct detection effect and that the optimal operating point is shifted to higher bias voltages when...
journal article 2005
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Boonstra, A.J. (author)
The next generation of radio telescopes is expected to be one to two orders of magnitude more sensitive than the current generation. Examples of such new telescopes are the Low Frequency Array (LOFAR), currently under construction in the Netherlands, and the Square Kilometer Array (SKA), currently in a concept study phase. Another trend is that...
doctoral thesis 2005
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Baselmans, J.J.A. (author), Baryshev, A. (author), Reker, S.F. (author), Hajenius, M. (author), Gao, J.R. (author), Klapwijk, T.M. (author), Voronov, B. (author), Gol'tsman, G. (author)
We present a detailed experimental study of the direct detection effect in a small volume (0.15??m×1??m×3.5?nm) quasioptical NbN phonon cooled hot electron bolometer mixer at 673?GHz. We find that the small signal noise temperature, relevant for an astronomical observation, is 20% lower than the noise temperature obtained using 300 and 77?K...
journal article 2006
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Walstra, D.J.R. (author), Koster, L. (author)
report 2006
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Fenicia, F. (author), Savenije, H.H.G. (author), Matgen, P. (author), Pfister, L. (author)
A conceptual hydrological model structure contains several parameters that have to be estimated through matching observed and modeled watershed behavior in a calibration process. The requirement that a model simulation matches different aspects of system response at the same time has led the calibration problem toward a multiobjective approach....
journal article 2007
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Bakker, M. (author), Maas, K. (author), Von Asmuth, J.R. (author)
A comprehensive and efficient approach is presented for the calibration of transient groundwater models. The approach starts with the time series analysis of the measured heads in observation wells using all active stresses as input series, which may include rainfall, evaporation, surface water levels, and pumping. The time series analysis...
journal article 2008
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Van der Have, F. (author), Vastenhouw, B. (author), Rentmeester, M. (author), Beekman, F.J. (author)
For multipinhole single-photon emission computed tomography (SPECT), iterative reconstruction algorithms are preferred over analytical methods, because of the often complex multipinhole geometries and the ability of iterative algorithms to compensate for effects like spatially variant sensitivity and resolution. Ideally, such compensation...
journal article 2008
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