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Smeur, E.J.J. (author), Chu, Q.P. (author), De Croon, G.C.H.E. (author), Remes, B. (author), De Wagter, C. (author), Van der Horst, E (author)The concept of an aircraft capable of both hover as well as fast forward flight (hybrid) has recently been implemented on unmanned aerial vehicles (UAV). Hybrid UAVs combine hover capability with long range and endurance. As UAVs are often required to operate without human intervention, there is a call for autonomous guidance of hybrid UAVs....conference paper 2014
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Noyon, T.A. (author), Tay, W.B. (author), Van Oudheusden, B.W. (author), Bijl, H. (author)A three-dimensional simulation of hovering flapping wings was performed using an immersed boundary method. This was done to investigate the effects of chordwise wing deformation on three important unsteady aerodynamic mechanisms found in flapping flight, namely Leading Edge Vortex (LEV) shedding, wake capture and clap and fling. A wing was...conference paper 2014
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Grootjans-van Kampen, I. (author), Engelfriet, P.M. (author), Van Baal, P.H.M. (author)Background Disease prevention has been claimed to reduce health care costs. However, preventing lethal diseases increases life expectancy and, thereby, indirectly increases the demand for health care. Previous studies have argued that on balance preventing diseases that reduce longevity increases health care costs while preventing non-fatal...journal article 2014
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Armanini, S.F. (author), Verboom, J.L. (author), De Croon, G.C.H.E. (author), De Visser, C.C. (author)This paper presents the results of a series of flight tests conducted in order to assess the steady-state flight characteristics and basic control behaviour of the DelFly, a flapping-wing micro aerial vehicle (FWMAV). Flights were conducted in an indoor motion tracking facility and included steady-level flight at a range of different velocities...conference paper 2014
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Wang, Q. (author), Goosen, J.F.L. (author), Van Keulen, F. (author)As one of the most important components of a flapping-wing micro air vehicle (FWMAV), the design of an energy-efficient flapping-wing has been a research interest recently. Research on insect flight from different perspectives has been carried out, mainly with regard to wing morphology, flapping kinematics, and unsteady aerodynamics. However,...conference paper 2014
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Fuchs, C. (author), Borst, C. (author), De Croon, G.C.H.E. (author), Van Paassen, M.M. (author), Mulder, M. (author)This research employs ecological interface design to improve the human machine interface of an existing ground control station for the supervisory control of UAV swarms. As a case study, a general ground surveillance mission with four UAVs is envisioned. An analysis of the swarming work domain is performed to generate a reduced set of means-end...conference paper 2014
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Gard, W.F. (author), Van de Kuilen, J.W.G. (author), Cabrera de Diego, M. (author)Hydraulic timber structures such as mooring poles, fenders, lock gates and jetties are widely-used in inner and sea harbours all over the world. In general these structures give satisfactory performance with regard to the technical requirements. Because of the harsh exposure conditions such as brackish and contaminated water, drying-out,...conference paper 2014
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Jiang, Y. (author), Schaffrath, J. (author), Knorz, M. (author), Winter, S. (author), Van de Kuilen, J.W.G. (author)In a current research project the gluability of four European timber species and their applicability in glued laminated timber is investigated. The influence of different processing parameters on the adhesive bonding is assessed with regard to shear strength and delamination resistance. Furthermore, microscopy-based investigations revealed...conference paper 2014
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Van de Kuilen, J.W.G. (author), Xia, Z. (author)Cross laminated timber (CLT) has been rapidly developed and utilized for multi-rise constructions in recent years, even high-rise CLT buildings with 40 stories have been proposed and designed. A use of unbonded post-tensioning (PT) steel bars through over CLT walls of the high-rise CLT buildings to take up the tensile forces produced by wind...conference paper 2014
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Van de Kuilen, J.W.G. (author), Otterloo, J. (author), Ravenshorst, G.J.P. (author), De Vries, P. (author)Wooden mitre gates are used for centuries in waterways and canals. For newly built as well as the renewal of such gates, a number of wood species is used, ranging from oak to dense tropical hardwoods. As mitre gates have high loads to withstand, their strength verification has become more and more important. As strength verification rules for...conference paper 2014
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Kovryga, A. (author), Stapel, P. (author), Van de Kuilen, J.W.G. (author)The quality assurance of timber properties is important for the safety of timber structures. In the current study, the quality control options of timber are analysed under the prism of the different growth regions. Therefore, these options - machine and output control - are simulated in accordance with EN 14081, and the performance is assessed...conference paper 2014
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Stapel, P. (author), Van de Kuilen, J.W.G. (author)Structural timber in Europe is either graded visually or by machine. Both grading methods are applied to limit the variation in engineering properties of sawn timber. The obtained grading results are largely dependent on the method chosen. In addition, parameters such as species, source, and cross-section of the timber, as well as the applied...conference paper 2014
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Brands, T. (author), De Romph, E. (author), Veitch, T. (author), Cook, J. (author)Public transport (PT) is important, because the current traffic system faces well known problems like congestion, environmental impact and use of public space. To be able to assess the effects of policy measures properly, it is necessary to model the behavior of the (PT) traveler in a realistic way. An aspect that lacks realism in a lot of...journal article 2014
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Ten Kate, O.M. (author), Hooning, K.M. (author), Van der Kolk, E. (author)Analytical equations quantifying self-absorption losses in circular luminescent solar concentrators (LSCs) are presented that can easily be solved numerically by commercial math software packages. With the quantum efficiency, the absorption and emission spectra of a luminescent material, the LSC dimensions, and the refractive index as the only...journal article 2014
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Chou, F.C. (author), Lipfert, J. (author), Das, R. (author)Single-molecule tweezers measurements of double-stranded nucleic acids (dsDNA and dsRNA) provide unprecedented opportunities to dissect how these fundamental molecules respond to forces and torques analogous to those applied by topoisomerases, viral capsids, and other biological partners. However, tweezers data are still most commonly...journal article 2014
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Rogers, E.G. (author), Dorenbos, P. (author)The vacuum referred binding energy (VRBE) of the single electron in the lowest energy 3d level of Sc2 +, V4 +, Cr5 +, the lowest 4d level of Y2 +, Zr3 +, Nb4 +, Mo5 + and the lowest 5d level of Ta4 +, and W5 + in various compounds are determined by means of the chemical shift model. They will be compared with the VRBE in the already established...journal article 2014
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Trambauer, P. (author), Maskey, S. (author), Werner, M. (author), Pappenberger, F. (author), Van Beek, L.P.H. (author), Uhlenbrook, S. (author)Droughts are widespread natural hazards and in many regions their frequency seems to be increasing. A finer-resolution version (0.05° × 0.05°) of the continental-scale hydrological model PCRaster Global Water Balance (PCR-GLOBWB) was set up for the Limpopo River basin, one of the most water-stressed basins on the African continent. An irrigation...journal article 2014
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Ishihara, R. (author), Van de Zwan, M. (author), Trifunovic, M. (author)Methods for manufacture of a submicron semiconductor structure on a substrate are described. The method may comprise: forming at least one template layer over a support substrate; forming one or more template structures, preferably one or more recesses and/or mesas, in said template layer, said one or more template structures comprising one or...patent 2014
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Wittmann, M.E. (author), Cooke, R.M. (author), Rothlisberger, J.D. (author), Ruttherford, E. (author), Zhang, H. (author), Mason, D.M. (author), Lodge, D.M. (author)Identifying which nonindigenous species will become invasive and forecasting the damage they will cause is difficult and presents a significant problem for natural resource management. Often, the data or resources necessary for ecological risk assessment are incomplete or absent, leaving environmental decision makers ill equipped to effectively...journal article 2014
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Ullien, D. (author), Thüne, P.C. (author), Jager, W.F. (author), Sudhölter, E.J.R. (author), De Smet, L.C.P.M. (author)4-Nitrobenzenediazonium (4-NBD) and 4-bromobenzenediazonium (4-BBD) salts were grafted electrochemically onto H-terminated, p-doped silicon (Si) surfaces. Atomic force microscopy (AFM) and ellipsometry experiments clearly showed layer thicknesses of 2–7 nm, which indicate multilayer formation. Decreasing the diazonium salt concentration and the...journal article 2014