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TNO Telecom (author), Kraaij, W. (author), Pohlmann, R.C.M. (author)Previous research on stemming has shown both positive and negative effects on retrieval performance. This paper describes an experiment in which several linguistic and non-linguistic stemmers are evaluated on a Dutch test collection. Experiments especially focus on the measurement of Recall. Results show that linguistic stemming restricted to...conference paper 1996
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SPIE - The International Society for Optical Engineering (author), Schleijpen, H.M.A. (author)Reduction of the infrared signature of warships helps to increase their survivability. Two methods to reduce the infrared signature are discussed: the cooling of exhaust gases and the application of low emissivity paint. The infrared signature of a generic frigate has been calculated with and without signature reduction. The signature values are...conference paper 1996
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- TNO Fysisch en Elektronisch Laboratorium (author), Spiel, D.E. (author), de Leeuw, G. (author) article 1996
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Jansen, J.T.M. (author), Geleijns, J. (author), Zweers, D. (author), Schultz, F.W. (author), Zoetelief, J. (author)The variation in computed tomography dose index (CTDI) to effective dose conversion factors between different types of CT scanner is large (i.e. a factor of about 2 due to differences in beam shaping filters). Consequently, scanner specific conversion factors have to be applied. For some types of scanner, however, detailed information on the...article 1996
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Hennis, B.C. (author), Boomsma, D.I. (author), van Boheemen, P.A. (author), Engesser, L. (author), Kievit, P. (author), Dooijewaard, G. (author), Kluft, C. (author), TNO Preventie en Gezondheid (author)A pedigree-based maximum likelihood method developed by Lange et al. (12) was used to study the contribution of a newly defined di-allelic polymorphism in histidine-rich glycoprotein (HRG) to the plasma levels of HRG. In four families (n = 99) and 20 volunteers we found a heritability of 70%, an age effect of 3% and an effect of individual...article 1995
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Kooi, F.L. (author), TNO Technische Menskunde (author)When regions containing a counterphasing sine-wave grating are presented side by side and in spatial and temporal quadrature phase, a transparent perception of motion results. This occurs even though none of the stimulus parts is moving. The two percepts of motion in these displays are in opposite directions, one analogous to brightness contrast...article 1995
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Haverkate, F. (author), Samama, M. (author), TNO Preventie en Gezondheid (author)Approximately 250 cases of dysfibrinogenemia have been reported; 55% were asymptomatic (detected by chance), 25% had a tendency to bleeding, and 20% were reported to have a tendency to thrombosis. To establish a possible association between familial dysfibrinogenemia and thrombophilia, data on cases with both affections were collected in a study...article 1995
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Miedema, J.R. (author), Klein, A.J.J. (author), Zee, F.W.M. (author), Prins Maurits Laboratorium TNO (author)Burn rate control of a Phase Stabilised Ammonium Nitrate (PSAN) propellant by specific surface area (SSA) tuning of the PSAN oxidiser resulted in unexpected effects of applying a new batch of PSAN having a different particle size distribution. Analysis of the deviations and consultation of literature showed that improvement might be found by...conference paper 1995
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Hennis, B.C. (author), van Boheemen, P.A. (author), Wakabayashi, S. (author), Koide, T. (author), Hoffmann, J.J.M.L. (author), Kievit, P. (author), Dooijewaard, G. (author), Jansen, J.G. (author), Klutf, C. (author), TNO Preventie en Gezondheid (author)Two forms of histidine-rich glycoprotein (HRG) were detected on SDS-PAGE by silver staining and immunoblotting after isolation of the protein from pooled plasma using immune-affinity chromatography followed by chromatography with heparin-Sepharose. Both forms were single-chain molecules and the apparent molecular weights of form 1 and form 2...article 1995
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Toet, A. (author), Hajema, W.P. (author)Object recognition can be formulated as an optimization problem. The objective function measures for instance the evidential support for any particular projection of the parameterized object contour model onto the input image. A genetic algorithm can be used to find a set of parameters which provide an optimal interpretation of the image in...article 1995
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Goldbohm, R.A. (author), van 't Veer, P. (author), van den Brandt, P.A. (author), van 't Hof, M.A. (author), Brants, H.A.M. (author), Sturmans, F. (author), Hermus, R.J.J. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)Objectives: In studies on diet and cancer, diet assessment should address long-term intake. Therefore, the authors determined the 5-year reproducibility of a self-adminstered 150-item food frequency questionnaire (FFQ) used to assess dietary habits in the Netherlands Cohort Study on diet and cancer. Since the FFQ was repeated more than once, the...article 1995
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Kampman, E. (author), Verhoeven, D. (author), Sloots, L. (author), van 't Veer, P. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)To examine the relationship between colon cancer and food groups from vegetable or animal sources and their possible interactions with gender, we analyzed data from a Dutch case-control study. Dietary patterns were assessed for 232 colon cancer cases and 259 population controls. In multivariate analyses, the consumption of vegetables was...article 1995
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Janssen, W.H. (author), Wierda, M. (author), van der Horst, A.R.A. (author)This paper sets out by identifying five plausible stages in the automation of the road traffic system, ranging from the introduction of part systems that support specific task components (navigation, collision avoidance) to full automation of roads and vehicles. It is then attempted to predict how drivers will respond to each successive stage of...article 1995
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de Rijke, Y.B. (author), Verwey, H.F. (author), Vogelezang, C.J.M. (author), van der Velde, E.A. (author), Princen, H.M.G. (author), van der Laarse, A. (author), Bruschke, A.V.G. (author), van Berkel, T.J.C. (author), Gaubius Instituut TNO (author)Oxidation of low-density lipoprotein (LDL) may play a causal role in atherosclerosis. In this study we analyzed whether the severity of progression of coronary atherosclerosis is related to the susceptibility of LDL to oxidative modification. On the basis of repeated coronary angiography, 28 coronary bypass patients were divided into two groups:...article 1995
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van Mechelen, J.R. (author), Smits, M. (author), Douma, A.C. (author), Rouster, J. (author), Cameron-Mills, V. (author), Heidekamp, F. (author), Valk, B.E. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)A full length cDNA sequence for a barley grain lipoxygenase was obtained. It includes a 5' untranslated region of 69 nucleotides, an open reading frame of 2586 nucleotides encoding a protein of 862 amino acid residues and a 3' untranslated region of 142 nucleotides. The molecular mass of the encoded polypeptide was calculated to be 96.392. Its...article 1995
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Haider, A.W. (author), Andreotti, F. (author), Hackett, D.R. (author), Tousoulis, D. (author), Kluft, C. (author), Maseri, A. (author), Davies, G.J. (author), Gaubius Instituut TNO (author)Objectives. This study investigated the influence of early spontaneous intermittent reperfusion on the extent of myocardial damage and its relation to endogenous hemostatic activity, Background. In the early phase of acute myocardial infarction coronary occlusion is often intermittent, even before thrombolytic therapy is administered. The...article 1995
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Twisk, J. (author), Hoekman, M.F.M. (author), Mager, W.H. (author), Moorman, A.F.M. (author), de Boer, P.A.J. (author), Scheja, L. (author), Princen, H.M.G. (author), Gebhardt, R. (author), Instituut voor Verouderings- en Vaatziekten Onderzoek TNO (author)We investigated the lobular localization and molecular level of expression of cholesterol 7α-hydroxylase and sterol 27-hydroxylase, two key enzymes in bile acid synthesis, in isolated periportal and pericentral hepatocytes and by in situ hybridization of rat liver. Enzyme activity, mRNA, and gene transcription of cholesterol 7α-hydroxylase were...article 1995
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Baleiras Couto, M.M. (author), Vogels, J.T.W.E. (author), Hofstra, H. (author), Huis in 'tVeld, J.H.J. (author), van der Vossen, J.M.B.M. (author), Centraal Instituut voor Voedingsonderzoek TNO (author)The random amplified polymorphic DNA (RAPD) assay and the restriction enzyme analysis of PCR amplified rDNA are compared for the identification of the common spoilage yeasts Zygosaccharomyces bailii, Z. rouxii, Saccharomyces cerevisiae, Candida valida and C. lipolytica. Both techniques proved to be adequate tools for yeast identification. Since...article 1995
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Emeis, J.E. (author), Hoekzema, R. (author), de Vos, A.F. (author), TNO Preventie en Gezondheid (author)In experimental animals and humans, intravenous (IV) injection of endotoxin induces large increases in circulating plasminogen activator inhibitor type-1 (PAI-1), a major inhibitor of blood fibrinolysis. A similar increase is seen after the injection of interleukin-1 (IL-1) or of tumor necrosis factor-α (TNF-α), suggesting that these cytokines...article 1995
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Valentijn, A.R.P.M. (author), van den Berg, O. (author), van der Marel, G.A. (author), Cohen, L.H. (author), van Boom, J.H. (author), TNO Preventie en Gezondheid (author)The synthesis of four new analogues (i.e. 3-6) of farnesyl pyrophosphate (FPP), which may function as inhibitor of squalene synthase, is described. Compounds 3 and 4 were readily accessible by reaction of farnesal with diethyl phosphite or dimethyl lithiomethylphosphonate, respectively, followed by condensation of the resulting alcohols with...article 1995