- document
-
van Eekeren, A.W.M. (author), Schutte, K. (author), Dijk, J. (author), Schwering, P.B.W. (author), van Iersel, M. (author), Doelman, N.J. (author)In general, long range visual detection, recognition and identification are hampered by turbulence caused by atmospheric conditions. Much research has been devoted to the field of turbulence compensation. One of the main advantages of turbulence compensation is that it enables visual identification over larger distances. In many (military)...conference paper 2012
- document
-
Mora, A. (author), Vosteen, L.L.A. (author)The ESA Gaia spacecraft has two Shack-Hartmann wavefront sensors (WFS) on its focal plane. They are required to refocus the telescope in-orbit due to launch settings and gravity release. They require bright stars to provide good signal to noise patterns. The centroiding precision achievable poses a limit on the minimum stellar brightness...conference paper 2012
- document
-
Verleyen, E. (author), Hodgson, D.A. (author), Sabbe, K. (author), Cremer, H. (author), Emslie, S.D. (author), Gibson, J. (author), Hall, B. (author), Imura, S. (author), Kudoh, S. (author), Marshall, G.J. (author), McMinn, A. (author), Melles, M. (author), Newman, L. (author), Roberts, D. (author), Roberts, S.J. (author), Singh, S.M. (author), Sterken, M. (author), Tavernier, I. (author), Verkulich, S. (author), de Vyver, E.V. (author), van Nieuwenhuyze, W. (author), Wagner, B. (author), Vyverman, W. (author)We review the post-glacial climate variability along the East Antarctic coastline using terrestrial and shallow marine geological records and compare these reconstructions with data from elsewhere. Nearly all East Antarctic records show a near-synchronous Early Holocene climate optimum (11.5-9 ka BP), coinciding with the deglaciation of...article 2011
- document
-
Baart, F. (author), Bakker, M.A.J. (author), van Dongeren, A. (author), den Heijer, C. (author), van Heteren, S. (author), Smit, M.W.J. (author), van Koningsveld, M. (author), Pool, A. (author)For the design of cost-effective coastal defence a precise estimate is needed of the 1/10 000 per year storm surge. A more precise estimate requires more observations. Therefore, the three greatest storm surges that hit the northern part of the Holland Coast in the 18th century are reconstructed. The reconstructions are based on paintings,...article 2011
- document
-
Esteban, I. (author), Dijk, J. (author), Groen, F. (author)FIT3D is a Toolbox built for Matlab that aims at unifying and distributing a set of tools that will allow the researcher to obtain a complete 3D model from a set of calibrated images. In this paper we motivate and present the structure of the toolbox in a tutorial and example based approach. Given its flexibility and scope we believe that FIT3D...conference paper 2011
- document
-
Witberg, R.R. (author), van Veldhoven, E.R. (author), Keus, D. (author), Ordelmans, P. (author)A detailed After Action Review (AAR) is essential to get the most out of a live exercise or training simulation. An effective AAR requires an overall picture of all the actions and events that took place during the exercise. Compiling such an overall picture is often a complicated task, because the different participants all perform their own...conference paper 2011
- document
-
Anitori, L. (author), Otten, M.P.G. (author), Hoogeboom, P. (author), TNO Defensie en Veiligheid (author)In this paper we present some preliminary results on the application of Compressive Sensing (CS) to high resolution radar imaging. CS is a recently developed theory which allows reconstruction of sparse signals with a number of measurements much lower than what is required by the Shannon sampling theorem. This method has already found its way in...conference paper 2010
- document
-
Hijma, M.P. (author), van der Spek, A.J.F. (author), van Heteren, S. (author), TNO Bouw en Ondergrond (author)A proper understanding of coastal development during periods of rapid sea-level rise is a prerequisite for the prediction of future coastal response to the expected acceleration in sea-level rise. However, the development of back-barrier basins, especially in river-mouth areas, during such periods is still not well understood. Here we show the...article 2010
- document
-
van Eekeren, A.W.M. (author), Klamer Schutte, K. (author), van Vliet, L.J. (author), TNO Defensie en Veiligheid (author)Multiframe super-resolution (SR) reconstruction of small moving objects against a cluttered background is difficult for two reasons: a small object consists completely of “mixed” boundary pixels and the background contribution changes from frame-to-frame. We present a solution to this problem that greatly improves recognition of small moving...article 2010
- document
-
Wagner-Cremer, F. (author), Donders, T.H. (author), Visscher, H. (author), TNO Bouw en Ondergrond (author)In the present study, structural xeromorphic features in modern and subfossil Quercus laurifolia leaves from southern Florida were quantified to reconstruct past precipitation changes in sensitive terrestrial settings. Absolute cell numbers/mm<sup>2</sup>, quantified as epidermal cell density (ED) have been analyzed on leaves from herbarium...article 2010
- document
-
Kirilova, E.P. (author), Cremer, H. (author), Heiri, O. (author), Lotter, A.F. (author), TNO Bouw en Ondergrond (author)We studied the trophic development of the past 30-100 years in eight moderately deep Dutch lakes based on their sedimentary fossil diatom assemblages. The dominant diatoms indicating meso- to eutrophic conditions were Aulacoseira subarctica, Cyclotella ocellata, C. cyclopuncta, C. meneghiniana, Puncticulata bodanica, Aulacoseira granulata,...article 2009
- document
-
Bongers, W.A. (author), Goede, A.P.H. (author), Westerhof, E. (author), Oosterbeek, J.W. (author), Doelman, N.J. (author), Schüller, F.C. (author), de Baar, M.R. (author), Kasparek, W. (author), Wubie, W. (author), Wagner, D. (author), Stober, J. (author), Team, T. (author), TNO Industrie en Techniek (author)Neoclassical tearing modes (NTMs) deteriorate highpressure tokamak plasma confinement and can be suppressed by electron cyclotron current drive (ECCD). In order to obtain efficient suppression, the ECCD power needs to be deposited at the center of an NTM magnetic island. To enhance efficiency, this power also needs to be synchronized in phase...article 2009
- document
-
TNO Defensie en Veiligheid (author), Dijk, J. (author), van Eekeren, A.W.M. (author), Schutte, K. (author), de Lange, D.J.J. (author), van Vliet, L.J. (author)When bright moving objects are viewed with an electro-optical system at very long range, they will appear as small slightly blurred moving points in the recorded image sequence. Detection of point targets is seriously hampered by structure in the background, temporal noise and aliasing artifacts due to undersampling by the infrared (IR) sensor....conference paper 2009
- document
-
TNO Defensie en Veiligheid (author), ter Haar, F.B. (author)In this thesis, we measure 3D shapes with the use of 3D laser technology, a recent technology that combines physics, mathematics, and computer science to acquire the surface geometry of 3D shapes in the computer. We use this surface geometry to fully reconstruct real world shapes as computer models, and to analyze the characteristics and...doctoral thesis 2009
- document
-
Sluijs, A. (author), Brinkhuis, H. (author), Crouch, E.M. (author), John, C.M. (author), Handley, L. (author), Munsterman, D. (author), Bohaty, S.M. (author), Zachos, J.C. (author), Reichart, G.-J. (author), Schouten, S. (author), Pancost, R.D. (author), Damsté, J.S.S. (author), Welters, N.L.D. (author), Lotter, A.F. (author), Dickens, G.R. (author), TNO Bouw en Ondergrond (author)We reconstruct eustatic variations during the latest Paleocene and earliest Eocene (∼58-52 Ma). Dinoflagellate cysts, grain size fractions, and organic biomarkers in marine sections at four sites from three continents indicate an increased distance to the coast during the Paleocene-Eocene thermal maximum (PETM). The same trend is recognized in...article 2008
- document
-
García-Amorena, I. (author), Wagner-Cremer, F. (author), Gomez Manzaneque, F. (author), van Hoof, T.B. (author), García Álvarez, S. (author), Visscher, H. (author), TNO Bouw en Ondergrond (author)Here we analyse radiocarbon-dated Quercus leaf assemblages from northern Spain to obtain past atmospheric CO2 mixing ratios for the time period 9000ĝ€"1100 cal BP by means of stomatal frequency analysis. Normalized, stomata based CO2 records show fluctuations of 20 ppmv during the Holocene that parallel Northern Hemisphere palaeotemperature...article 2008
- document
-
Busschers, F.S. (author), van Balen, R.T. (author), Cohen, K.M. (author), Kasse, C. (author), Weerts, H.J.T. (author), Wallinga, J. (author), Bunnik, F.P.M. (author), TNO Bouw en Ondergrond (author)A new reconstruction of the interaction between the Saalian Drente glaciation ice margin and the Rhine-Meuse fluvial system is presented based on a sedimentary analysis of continuous core material, archived data and a section in an ice-pushed ridge. Optically Stimulated Luminescence (OSL) was applied to obtain independent age control on these...article 2008
- document
-
TNO Defensie en Veiligheid (author), Dijk, J. (author), van Eekeren, A.W.M. (author), Schutte, K. (author), de Lange, D.J.J. (author), van Vliet, L.J. (author)When bright moving objects are viewed with an electrooptical system at long range, they appear as small, slightly blurred moving points in the recorded image sequence. Typically, such point targets need to be detected in an early stage. However, in some scenarios the background of a scene may contain much structure, which makes it difficult to...article 2008
- document
-
Gibbs, S. (author), van de Sandt, J.J.M. (author), Merk, H.F. (author), Lockley, D.J. (author), Pendlington, R.U. (author), Pease, C.K. (author), TNO Kwaliteit van Leven (author)In this review, we discuss and compare studies of xenobiotic metabolism in both human skin and 3D human skin reconstructs. In comparison to the liver, the skin is a less studied organ in terms of characterising metabolic capability. While the skin forms the major protective barrier to environmental chemical exposure, it is also a potential...article 2007
- document
-
Heiri, O. (author), Cremer, H. (author), Engels, S. (author), Hoek, W.Z. (author), Peeters, W. (author), Lotter, A.F. (author), TNO Bouw en Ondergrond (author)Lateglacial environments at Hijkermeer, northwest Netherlands, were reconstructed by means of chironomid, diatom and pollen analyses. Diatom assemblages indicate that Hijkermeer was a shallow, oligo- to mesotrophic lake during this period. Pollen assemblages reflect the typical northwest European Lateglacial vegetation development and provide an...article 2007