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Huggett, A. (author), Petersen, B.J. (author), Walker, R. (author), Fisher, C.E. (author), Notermans, S.H.W. (author), Rombouts, F.M. (author), Abbott, P. (author), Debackere, M. (author), Hathaway, S.C. (author), Hecker, E.F.F. (author), Knaap, A.G.A. (author), Kuznesof, P.M. (author), Meyland, I. (author), Moy, G. (author), Narbonne, J.-F. (author), Paakkanen, J. (author), Smith, M.R. (author), Tennant, D. (author), Wagstaffe, P. (author), Wargo, J. (author), Würtzen, G. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Internationally acceptable norms need to incorporate sound science and consistent risk management principles in an open and transparent manner, as set out in the Agreement on the Application of Sanitary and Phytosanitary Measures (the SPS Agreement). The process of risk analysis provides a procedure to reach these goals. The interaction between...article 1998
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Janssens, M.H.A. (author), Thompson, D.J. (author), Technisch Physische Dienst TNO - TH (author)The sound level of a train crossing a steel railway bridge is usually about 10 dB higher than on plain track. In the Netherlands there are many such bridges which, for practical reasons, cannot be replaced by more intrinsically quiet concrete bridges. A computational model is described for the estimation of noise levels due to a train crossing a...article 1996
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Boshuizen, H.C. (author), Greenland, S. (author), TNO Preventie en Gezondheid (author)Average age at first occurrence of a disease is easier to interpret than the incidence rate, which can be difficult to interpret for a common disease. Basic methods for estimating univariate differences and ratios for average age at first occurrence are outlined and illustrated with a real-life example.article 1996
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Groen, E.L. (author), Bos, J.E. (author), Nacken, P.F.M. (author), de Graaf, B. (author), TNO Technische Menskunde (author)A new, automatic method for determination of human ocular torsion (OT) was devel-oped based on the tracking of iris patterns in digitized video images. Instead of quanti-fying OT by means of cross-correlation of circular iris samples, a procedure commonly applied, this new method automatically selects and recovers a set of 36 significant...article 1996
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Been, R. (author), TNO Fysisch en Elektronisch Laboratorium (author)At the TNO Physics and Electronics Laboratory (TNO-FEL), for a number of decades, the behaviour and performance of towed sonar systems has been studied extensively. Since the performance of towed sonars highly depends on the shape of the hydrophone array, the underwater acoustics group started performing research in this field in the 1980's....conference paper 1996
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Papp, Z. (author), Driessen, B.J.F. (author), Technisch Physische Dienst TNO - TH (author)The paper presents an adaptive nonlinear (state-) feedback control structure, where the nonlinearities are implemented as smooth fuzzy mappings defined as rule sets. The fine tuning and adaption of the controller is realized by an indirect adaptive scheme, which modifies the parameters of the fuzzy mapping. The performance index gradients are...conference paper 1995