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Dijkstra, W.O. (author)In the thesis two different models of solidification of aluminum alloys are presented and analyzed. The first 1--D solidification model is derived from the conservation of solute, heat and mass. With numerical experiments it is shown that simulations with the Finite Difference discretization must adhere a relation similar to the Courant...doctoral thesis 2007
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Jansens, P.J. (author), Dijkstra, F. (author)The invention relates to a control system for a processing installation or production plant or the like, pro vided with at least one control loop, comprising a sensor, a controller and an actuator, the sensor being designed for measuring a parameter of the processing installation or the production plant that is to be controlled, and the actuator...patent 2007
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Dijkstra, J.T. (author)By changing flow patterns and sediment transport, aquatic vegetation can affect the development of estuarine bed topography. Besides, since the sediment transport also determines the amount of light available for photosynthetic growth, the presence of vegetation can also affect its own development. This selfsupporting interaction should be taken...conference paper 2007
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Dijkstra, J.T. (author)Worldwide, aquatic vegetation is important for the physical and ecological condition of coastal areas. Unfortunately, this vegetation (e.g. seagrasses) is also under pressure due to human activities. Protection and restoration are cumbersome, particularly because the complex relations between vegetation and its environment are not yet well...conference paper 2008
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- Kuipers, F.A. (author), Dijkstra, FH (author) journal article 2009
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Vlugt, T.J.H. (author), Van der Eerden, J.P.J.M. (author), Dijkstra, M. (author), Smit, B. (author), Frenkel, D. (author)Statistical Thermodynamics and Molecular Simulation aim at describing the properties of systems that consist of many individual particles (atoms, molecules). Although the properties of the complete system follow directly from the properties and interactions of the individual particles, usually these properties cannot be calculated directly by...book 2009
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Dijkstra, J.T. (author)Seagrasses are a valuable but threatened part of coastal systems. To aid restoration attempts, a model has been made to study the effect of such flexible aquatic vegetation on flow and sediment transport. Because this model needs to be tested against field results, a field experiment was undertaken around an eelgrass meadow in Dinard, France....conference paper 2009
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Dijkstra, J. (author)This thesis introduces two different types of physical model tests to investigate the stress and density change in the soil during installation of a jacked pile as well as two numerical modelling approaches to model the same process in a finite element code capable of large deformations.doctoral thesis 2009
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- Pieters, W. (author), Popkema, M. (author), Broekhans, B. (author), Dijkstra, A. (author), Boersma, K. (author), Alberts, G. (author) book chapter 2009
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Dijkstra, J. (author), Broere, W. (author)The current paper re-introduces the photoelastic measurement method in experimental geomechanics. A full-field phase stepping polariscope suitable for geomechanical model tests has been developed. Additional constraints on the measurement and mechanical setup arising from geomechanical test conditions are outlined as well as the opportunity to...journal article 2010
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Kok, P. (author), Baiker, M. (author), Hendriks, E.A. (author), Post, F.H. (author), Dijkstra, J. (author), Löwik, C.W.G.M. (author), Lelieveldt, B.P.F. (author), Botha, C.P. (author)The analysis of multi-timepoint whole-body small animal CT data is greatly complicated by the varying posture of the subject at different timepoints. Due to these variations, correctly relating and comparing corresponding regions of interest is challenging. In addition, occlusion may prevent effective visualization of these regions of interest....journal article 2010
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Dijkstra, J.T. (author), Uittenbogaard, R.E. (author)Aquatic vegetation has an important role in estuaries and rivers by acting as bed stabilizer, filter, food source and nursing area. However, macrophyte populations worldwide are under high anthropogenic pressure. Protection and restoration efforts will benefit from more insight into the interaction between vegetation, currents, waves and...journal article 2010
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- Dijkstra, Gerard (author) journal article 2012
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- Ngan-Tillard, D.J.M. (author), Dijkstra, J. (author), Broere, W. (author), Heimovaara, T.J. (author) conference paper 2012
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Dijkstra, J.T. (author)Aquatic plants –or macrophytes- are an important part of coastal, estuarine and freshwater ecosystems worldwide, both from an ecological and an engineering viewpoint. Their meadows provide a wide range of ecosystem services: forming a physical protection of the shoreline, enhancing water quality and harbouring many other organisms. Unfortunately...doctoral thesis 2012
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Yuan, J. (author), Hicks, M.A. (author), Dijkstra, J. (author)Electro-osmosis consolidation is an innovative and effective ground improvement method for soft clays. But electro-osmosis is also a very complicated process, as the mechanical behaviour, and hydraulic and electrical properties of the soil are changing rapidly during the treatment process; this makes electroosmosis hard to describe and simulate....conference paper 2012
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Meijer, G.J. (author), Dijkstra, J. (author)The current paper presents a novel experimental method which is able to capture the effects of suffusion by substitution of the fines in a sample by salt of a similar grain size. The setup is tailored to optically capture the change in soil structure behind a glass window in a plane strain strongbox using a digital camera. Subsequently, digital...conference paper 2012
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Beijer Lundberg, A. (author), Dijkstra, J. (author), Van Tol, A.F. (author)The use of a geotechnical centrifuge for properly capturing the mechanisms in the sand adjacent to a foundation pile is well established. Larger centrifuge facilities were previously preferred over small centrifuges, because of the difficulties of the required miniature instrumentation. The technology since then has moved on and recent technical...conference paper 2012
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- Dijkstra, J. (author), Broere, W. (author), van Tol, A.F. (author) conference paper 2012
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- Dijkstra, R.R.M. (author) master thesis 2013