Collection: research
(1 - 20 of 47,352)

Pages

document
Viegas Ochoa de Carvalho, Pedro (author), Fernandez Villegas, I. (author), Groves, R.M. (author), Benedictus, R. (author)

One of the advantages of thermoplastic composites relative to their thermoset counterparts is the possibility of assembling components through welding. Ultrasonic welding in particular is very promising for industrialization. However, uncertainty in the fatigue and fracture behaviour of composites is still an obstacle to the full utilisation...

journal article 2018
document
Hennink, A. (author), Lathouwers, D. (author)

We present a new discretization of the mono-energetic Fokker–Planck equation. We build on previous work (Kópházi and Lathouwers, 2015) where we devised an angular discretization for the Boltzmann equation, allowing for both heterogeneous and anisotropic angular refinement. The angular discretization is based on a discontinuous finite element...

journal article 2018
document
Diaz Cortes, G.B. (author), Vuik, C. (author), Jansen, J.D. (author)
We study fast and robust iterative solvers for large systems of linear equations resulting from simulation of flow trough strongly heterogeneous porous media. We propose the use of preconditioning and deflation techniques, based on information obtained frfrom the system, to reduce the time spent in the solution of the linear system.An important...
journal article 2018
document
Zhu, S. (author), Pozarlik, Artur (author), Roekaerts, D.J.E.M. (author), Correia Rodrigues, H.R. (author), van der Meer, Theo (author)

In the past 25 years high temperature air combustion (HiTAC) technology has been proved and utilized in industry as a promising way to increase thermal efficiency, create a relatively uniform temperature distribution, and reduce emissions of harmful pollutants such as NOX and CO. However, due to the complexity of fuel-oil...

journal article 2018
document
Wang, Y. (author), Makkee, M. (author)

Oxygen defects in reduced ceria are the catalytic sites for the NO reduction into N2 in the Toyota Di-Air DeNOx abatement technology. Traces of NO (several hundred ppm) have to compete with the excess amount of other oxidants, e.g., 5% CO2 and 5% O2, in an exhaust gas of a lean burn (diesel) engine....

journal article 2018
document
Wattez, Y.C.M. (author), Tenpierik, M.J. (author), Nijs, L. (author)
Over the last few years, reverberation times and sound pressure levels have been measured in many sports halls. Most of these halls, for instance those made from stony materials, perform as predicted. However, sports halls constructed with profiled perforated steel roof panels have an unexpected very low reverberation time in the 125 and 250 Hz...
journal article 2018
document
Jäger, W.S. (author), Morales Napoles, O. (author)
Stochastic descriptions and simulations of oceanographic variables are essential for coastal and marine engineering applications. In the past decade, copula-based approaches have become increasingly popular for estimating the multivariate distribution of some variables at the peak of a storm along with its duration. The modeling of the storm...
journal article 2017
document
Gallos, Lazaros K. (author), Korczynski, M.T. (author), Fefferman, Nina H. (author)
Early detection of traffic anomalies in networks increases the probability of effective intervention/mitigation actions, thereby improving the stability of system function. Centralized methods of anomaly detection are subject to inherent constraints: (1) they create a communication burden on the system, (2) they impose a delay in detection while...
journal article 2017
document
Morales Napoles, O. (author), Paprotny, D. (author), Worm, D (author), Abspoel, L (author), Courage, W (author)
In this paper two methodologies are investigated that contribute to better assessment of risks related to extreme rainfall events. Firstly, one-parameter bivariate copulas are used to analyze rain gauge data in the Netherlands. Out of three models considered, the Gumbel copula, which indicates upper tail dependence, represents the data most...
journal article 2017
document
Hu, Y. (author), Leus, G.J.T. (author)

Estimation problems in the presence of deterministic linear nuisance parameters arise in a variety of fields. To cope with those, three common methods are widely considered: (1) jointly estimating the parameters of interest and the nuisance parameters; (2) projecting out the nuisance parameters; (3) selecting a reference and then taking...

journal article 2017
document
Brinksma, H. (author)
Homes are renovated a number of times during their lifespan. Although we can regard each of these renovations as new, it is more prudent to implement a future-proof solution to renovation.

The purpose of this study is to gain an insight into how future-proof renovation solutions are for homes built between 1975 and 1991 that are...
doctoral thesis 2017
document
Eid, C. (author)
The European policy focus on smart grids implies their development as an indispensable part of the future power system. However, the definition of a smart grid is broad and vague, and the actual implementation of a smart grid can differ significantly depending on the stakeholders involved. Smart electricity grids can be defined as electricity...
doctoral thesis 2017
document
Madzarevic, Z. (author)
Efficient and cost-effective technologies that will enable separation and capture of CO2 are needed. The development of high-performance all-aromatic poly(ether)imide (P(E)I) membranes is attractive as they offer a large degree of design freedom and they are cheap to operate. However, the molecular design rules towards P(E)I membranes that...
doctoral thesis 2017
document
Verlaan, J.G. (author)
Een exploratieve studie naar de financieel-economische implicaties van de invoering van een baten-lastenstelsel bij de Nederlandse Rijksoverheid voor de instandhouding van civieltechnische netwerken. Doel is om als professioneel opdrachtgever op basis van bedrijfseconomische beginselen de instandhoudingsactiviteiten optimaal te sturen. Hiermee...
doctoral thesis 2017
document
Fernandez de la Fuente, J. (author)
The global energy challenges along with global warming are regarded as the most important issues faced by humankind in the 21st century. A fossil fuels-based energy economy cannot support the rapidly increasing world energy demand in a sustainable manner. Hence, the development and implementation of alternative solutions to the use of fossil...
doctoral thesis 2017
document
Kulshreshtha, Y. (author), Schlangen, H.E.J.G. (author), Jonkers, H.M. (author), Vardon, P.J. (author), van Paassen, L.A. (author)

Starch is a natural polymer which is commonly used as a cooking ingredient. The renewability and bio-degradability of starch has made it an interesting material for industrial applications, such as production of bioplastic. This paper introduces the application of corn starch in the production of a novel construction material, named CoRncrete...

journal article 2017
document
Ahmadi, D. (author)
In the past decades, diversity has become a popular catchphrase in theoretical, policy and public discourses in Canadian cities.

This study seeks to add to our understanding of urban diversity, as perceived and experienced by those who inhabit, frequent and govern urban areas. The study further makes use of a variety of qualitative and...
doctoral thesis 2017
document
Oud, G.T. (author)
This research entails the numerical simulation of physical flow instabilities that can occur in two-phase pipe flows with a new efficient algorithm. The fluids are assumed to be immiscible, and the flow is incompressible and isothermal in a straight circular pipe section with a certain inclination. The numerical algorithm that was developed...
doctoral thesis 2017
document
van de Kaa, G. (author), Kamp, L.M. (author), Rezaei, J. (author)

This paper studies the technology battle for biomass conversion in the Netherlands. Three types of technologies are currently fighting the battle for standard dominance: combustion, pyrolysis, and gasification. Twelve relevant factors for standard dominance were found: ‘financial strength’, ‘operational supremacy’, ‘learning orientation’, ...

journal article 2017
document
Wang, Y. (author)
Nitrogenoxides (NOx, including NO and NOx) are a group of hazardous, toxic and harmfulgasses, which have an adverse effect on both environment and human health,e.g., acid rain, photochemical smog, and affecting the human respiratorysystem. The NOx concentration in most of the EUcities exceeds the EU annual limit value (40 μg/m3). Around40% of...
doctoral thesis 2017
Collection: research
(1 - 20 of 47,352)

Pages