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Trip, J.J. (author), Konings, J.W. (author)Report written within the framework of Activity 7.4 of the Interreg IVB project E-Mobility NSR, file nr. 35-2-6-11. During the last decade the Municipality of Amsterdam has initiated quite elaborate policies to improve the air quality within the city, both for reasons of public health and spatial development. These policies were redefined in...report 2014
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Molenkamp, F. (author), De Jager, R.R. (author), Mathijssen, F.A.J.M. (author)For the saturated case with only one pore fluid, either water or air, the roles of both the intergranular stress tensor and the pore fluid stress can be distinguished easily. In the unsaturated case, the capillary water is recognized to induce capillary suction in the pores and capillary-suction-induced interparticle forces. At the macroscale,...journal article 2014
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- Meurs, P.H. (author), Voerman, L. (author) book chapter 2014
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Resch, V. (author), Hanefeld, U. (author)Water is omnipresent and essential. Yet at the same time it is a rather unreactive molecule. The direct addition of water to C[double bond, length as m-dash]C double bonds is therefore a challenge not answered convincingly. In this perspective we critically evaluate the selectivity and the applicability of the different catalytic approaches for...journal article 2014
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Beumer, G. (author), Van den Heuvel, D. (author)Statement on contemporary Dutch architecture for a special issue of the German weekly Baunetzwoche devoted to Dutch architecture.journal article 2014
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Mohd Amin, M.F. (author), Heijman, S.G.J. (author), Lopes, S.I.C. (author), Rietveld, L.C. (author)This paper reports on the direct ability of two positively charged organic polyelectrolytes (natural-based and synthetic) to reduce the atrazine concentration in water. The adsorption study was set up using multiple glass vessels with different polymer dosing levels followed by ultrafiltration with a 1?kDa membrane. The addition of polymers...journal article 2014
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Trinh, T.T. (author), Bedeaux, D. (author), Simon, J.M. (author), Kjelstrup, S.H. (author)We find by examination of density profiles that carbon dioxide adsorbs on graphite in two distinct layers. We report the activity coefficient, entropy and enthalpy for CO2 in each layer using a convenient computational method, the Small System Method, thereby extending this method to surfaces. This opens up the possibility to study thermodynamic...journal article 2014
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Negro, E. (author), Dieci, M. (author), Sordi, D. (author), Kowlgi, K. (author), Makkee, M. (author), Koper, G.J.M. (author)We report on the production of Carbon Nano Networks (CNNs) from dense microemulsions in which catalyst nanoparticles have been synthesized. CNNs are 3D carbon networks, consisting of branches and junctions, and are mesoporous, graphitic, and conductive being suitable as electrode materials.journal article 2014
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Schipper, H.R. (author), Grünewald, S. (author)Concrete is an excellent material for application in free-form architecture as a result of its initial fluid state. Double-curved building shapes have been realized in various fibre-reinforced mixtures, using advanced CNC-milled formwork systems. However, a substantial reduction of material use is still possible on two ends: by using a flexible...conference paper 2014
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- Si, F.T. (author), Kim, D. (author), Santbergen, R. (author), Tan, H. (author), Van Swaaij, R.A.C.M.M. (author), Smets, A.H.M. (author), Isabella, O. (author), Zeman, M. (author) journal article 2014
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Muala, E. (author), Mohamed, Y.A. (author), Duan, Z. (author), Van der Zaag, P. (author)This paper presents the feasibility of estimating discharges from Roseires Reservoir (Sudan) for the period from 2002 to 2010 and Aswan High Dam/Lake Nasser (Egypt) for the periods 1999–2002 and 2005–2009 using satellite altimetry and imagery with limited in situ data. Discharges were computed using the water balance of the reservoirs. Rainfall...journal article 2014
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Tenaglia, A. (author), Persin, M. (author), Van Oudheusden, B.W. (author), Deng, S. (author), Remes, B. (author)This paper addresses the unsteady aerodynamic mechanisms in the hovering flight of the DelFly II flapping-wing Micro Aerial Vehicle (MAV). Stereoscopic Particle Image Velocimetry (Stereo-PIV) were carried out around the wings at a high framing rate. Thrust-force was measured to investigate the relation between the vortex dynamics and the...conference paper 2014
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Remes, B.D.W. (author), Esden-Tempski, P. (author), Van Tienen, F. (author), Smeur, E. (author), De Wagter, C. (author), De Croon, G.C.H.E. (author)Recent advances in sensor miniaturization have enabled the development of a miniaturized fully functional autopilot. In this article, the open hardware and open software Paparazzi-UAV Lisa-S micro autopilot is presented, weighing only 2.8 grams and measuring 2 by 2 centimeters. It incorporates 2-way telemetry with a ground station, a Spektrum...conference paper 2014
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Lu, P. (author), Van Kampen, E.J. (author), Yu, B. (author)This paper presents a method for fault detection and diagnosis of actuator loss of effectiveness for a quadrotor helicopter. This paper not only considers the detection of the actuator loss of effectiveness faults, but also addresses the diagnosis of the faults. The detection and estimation of the faults are performed by the Augmented Extended...conference paper 2014
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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