Searched for: +
(1 - 20 of 73)

Pages

document
Van den Bergh, J. (author)
Around 2004 the annual energy consumption of the Dutch (petro-)chemical industry was estimated to be 460 PJ of which 200 PJ could be allocated to separation processes [1]. In 2009, 15% of the global energy consumption was required for separation and purification processes to produce commodities. Moreover, it is expected that in 2040 the global...
doctoral thesis 2010
document
Zulkifli, N.A. (author), Abdul Rahman, A. (author), Van Oosterom, P.J.M. (author)
This paper discusses 3D objects registration and modelling for cadastral objects within the Land Administration Domain Model (LADM) framework. A conceptual model as well as the associated technical model for the 2D and 3D objects have been proposed and developed for Malaysia. For both private and public land, the main subdivision of land in...
conference paper 2011
document
Latham, John Paul (author), Xiang, Jiansheng (author), Anastasaki, Eleni (author), Guo, Liwei (author), Karantzoulis, Nikolaos (author), Viré, A.C. (author), Pain, Christopher (author)
Numerical modelling has the potential to probe the complexity of the interacting physics of rubble mound armour systems. Through forward modelling of armour unit packs, stochastic variables such as unit displacement and maximum contact force per unit during an external oscillatory disturbance can be predicted. The combined finite-discrete...
conference paper 2014
document
Kapetas, L. (author), Vincent-Bonnieu, S.Y.F. (author), Danelis, S (author), Rossen, W.R. (author), Farajzadeh, R. (author), Eftekhari, A.A. (author), Mohd Shafian, SR (author), Kamarul Bahrim, RZ (author)
Foam can increase sweep efficiency within a porous medium, which is useful for oil-recovery processes[1]. The flow of foam in porous media is a complex process that depends on properties like permeability, porosity and surface chemistry, but also temperature. Although the surface activity of surfactants as a function of temperature is well...
journal article 2016
document
Van Wijngaarden-van Rossum, W.K. (author)
Biogrout is a method to reinforce sand and gravel by the production of calcium carbonate. This calcium carbonate is produced using micro-organisms that are either present in the subsoil or injected into it. The micro-organisms are supplied with urea and calcium. Subsequently, they catalyse the hydrolysis of urea, by which carbonate is formed. In...
doctoral thesis 2016
document
Zlatanova, S. (author), Sithole, George (author)
Over the last decade, harnessing the commercial potential of smart mobile devices in indoor environments has spurred interest in indoor mapping and navigation. Users experience indoor environments differently. For this reason navigational models have to be designed to adapt to a user’s personality, and to reflect as many cognitive maps as...
journal article 2016
document
Apostolou, G. (author)
This thesis explores the field of product-integrated photovoltaics (PIPV), a term which is used for all types of products that contain solar cells in one or more of their surfaces, aiming at providing power during the product’s use. Product-integrated photovoltaics (PIPV) began to be widely introduced around 2000, although the use of PV systems...
doctoral thesis 2016
document
Sui, Congbiao (author), Song, Enzhe (author), Stapersma, D. (author), Ding, Y. (author)
Mean value diesel engine models are widely used since they focus on the main engine performance and can operate on a time scale that is longer than one revolution, and as a consequence use time steps that are much longer than crank-angle models. Mean Value First Principle (MVFP) models are not primarily intended for engine development but are...
journal article 2017
document
van Daal-Rombouts, P.M.M. (author), Gruber, Günter (author), Langeveld, J.G. (author), Muschalla, Dirk (author), Clemens, F.H.L.R. (author)
Real time control (RTC) is generally viewed as a viable method for optimising the performance of urban wastewater systems. A literature review on the performance evaluation of RTC demonstrated a lack of consensus on how to do this. Two main deficiencies were identified: omitting uncertainty analysis and applying limited evaluation periods. A...
journal article 2017
document
Wu, Y. (author), Nieuwenhoff, M.D. (author), Huygen, F.J.P.M. (author), van der Helm, F.C.T. (author), Niehof, S.P. (author), Schouten, A.C. (author)
Small nerve fibers regulate local skin blood flow in response to local thermal perturbations. Small nerve fiber function is difficult to assess with classical neurophysiological tests. In this study, a vasomotor response model in combination with a heating protocol was developed to quantitatively characterize the control mechanism of small...
journal article 2017
document
van Daal-Rombouts, P.M.M. (author), Benedetti, L (author), Jonge, J (author), Weijers, S (author), Langeveld, J.G. (author)
Real time control (RTC) is increasingly seen as a viable method to optimise the functioning of wastewater systems. Model exercises and case studies reported in literature claim a positive impact of RTC based on results without uncertainty analysis and flawed evaluation periods. This paper describes two integrated RTC strategies at the wastewater...
journal article 2017
document
Pasma, J.H. (author), van Kordelaar, J. (author), de Kam, D. (author), Weerdesteyn, V. (author), Schouten, A.C. (author), van der Kooij, H. (author)
Background: Closed loop system identification (CLSIT) is a method to disentangle the contribution of underlying systems in standing balance. We investigated whether taking into account lower leg muscle activation in CLSIT could improve the reliability and accuracy of estimated parameters identifying the underlying systems. Methods: Standing...
journal article 2017
document
M. A. Matias, Mayara (author), da C. Pestana, Reynam (author), van der Neut, J.R. (author)
Obtaining an accurate image of the subsurface still remains a great challenge for the seismic method. Migration algorithms aim mainly on positioning seismic events in complex geological contexts. Multiple reflections are typically not accounted for in this process, which can lead to the emergence of artefacts. In Marchenko imaging, we...
journal article 2018
document
Kerst, S.M.A.A. (author), Shyrokau, B. (author), Holweg, E.G.M. (author)
This paper proposes a novel semi-analytical bearing model addressing flexibility of the bearing outer race structure. It furthermore presents the application of this model in a bearing load condition monitoring approach. The bearing model is developed as current computational low cost bearing models fail to provide an accurate description of...
journal article 2018
document
Pouliot, Jacynthe (author), Ellul, Claire (author), Hubert, Frederic (author), Wang, Chen (author), Rajabifard, Abbas (author), Kalantari, Mohsen (author), Shojaei, Davood (author), Atazadeh, Behnam (author), van Oosterom, P.J.M. (author), de Vries, M.E. (author), Ying, Shen (author)
This paper proposes a discussion on opportunities offered by 3D visualization to improve the understanding and the analysis of cadastre data. It first introduce the rationale of having 3D visualization functionalities in the context of cadastre applications. Second the publication outline some basic concepts in 3D visualization. This section...
conference paper 2018
document
Holicki, M.E. (author), Drijkoningen, G.G. (author), Wapenaar, C.P.A. (author)
Up–down wavefield decomposition is effectuated by a scaled addition or subtraction of the pressure and vertical particle velocity, generally on horizontal or vertical surfaces, and works well for data given on such surfaces. The method, however, is not applicable to decomposing a wavefield when it is given at one instance in time, i.e. on...
journal article 2018
document
Maas, J.B. (author), van Gent, R.N.H.W. (author), Hoekstra, J.M. (author)
Object tracking is performed when surveillance applications have multiple observations of an object over time. An example of such a surveillance application is mounting a wideangle Frequency Modulated Continuous Wave (FMCW) radar system on board of a General Aviation aircraft. This is done in order to observe its environment in detail, including...
conference paper 2018
document
van Breugel, K. (author)
Models play a vital role in science and technology and in the evolution of modern societies. They are used for describing processes and mechanisms, experimental observations, analyses and predictions. In spite of the fact that models are a reduction of reality, the achievements of modern societies are impressive and would have been...
journal article 2018
document
Mao, W. (author), Ma, Yao (author), Sloof, W.G. (author)
A multi-element and multi-phase internal oxidation model that couples thermodynamics with kinetics is developed to predict the internal oxidation behaviour of Fe–Mn–Cr steels as a function of annealing time and oxygen partial pressure. To validate the simulation results, selected Fe–Mn–Cr steels were annealed at 950 °C for 1–16 h in a gas...
journal article 2018
document
Lampaert, S.G.E. (author), Fellinger, B. J. (author), Spronck, J.W. (author), van Ostayen, R.A.J. (author)
Ferrofluid bearings have been demonstrated to be very interesting for precision positioning systems. The friction of these bearings is free of stick-slip which results in an increase of precision. More knowledge on the friction behaviour of these bearings is important for there application in precision positioning systems. This paper...
journal article 2018
Searched for: +
(1 - 20 of 73)

Pages