document

An array of bandpass detectors for measuring beam spectral components

Jahangiri, M. (author), Sberna, P. (author), Sammak, A. (author), Nihtianov, S. (author)

A clear understanding of the spectral components of an irradiated beam, or captured optical emission, is essential to optimize an optical system and increase its performance. Logically, for this purpose a grating-based spectrometer could be the first choice. However, in the case of a wide range spectrum, and for radiation with one dominant...

article 2023

document

Approaching the Theoretical Maximum Performance of Highly Transparent Thermochromic Windows

Mann, D. (author), Calvi, L. (author), Yeung, C.P.K. (author), Habets, R. (author), Elen, K. (author), Hardy, A. (author), Van Bael, M.K. (author), Buskens, P. (author)

Thermochromic window coatings represent a promising technology to improve the energy efficiency of buildings in intermediate climates. With the technology approaching market introduction it is important to investigate its performance limits within smart windows and to identify existing development challenges. Here we analyze the theoretical...

article 2023

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Accelerated innovation in crises: The role of collaboration in the development of alternative ventilators during the COVID-19 pandemic

Geurts, A. (author), Geerdink, T. (author), Sprenkeling, M. (author)

article 2022

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Phase separation of VO2 and SiO2 on SiO2-Coated float glass yields robust thermochromic coating with unrivalled optical properties

Yeung, C.P.K. (author), Habets, R. (author), Leufkens, L. (author), Colberts, F. (author), Stout, K. (author), Verheijen, M. (author), Vroon, Z. (author), Mann, D. (author), Buskens, P. (author)

Vanadium dioxide displays thermochromic properties based on its structural phase transition from monoclinic VO2 (M) to rutile VO2 (R) and vice versa, and the accompanying reversible metal-insulator transition. We developed a single layer coating comprising VO2 (M) and SiO2. We applied the coating from an alcoholic solution comprising vanadium(IV...

article 2021

document

Flexibility in Home Delivery by Enabling Time Window Changes

Phillipson, F. (author), van Kempen, E.A. (author)

To enhance the perceived quality of home delivery services more and more flexibility is offered to the receivers. Enabling same-day delivery, communicating predefined narrow time windows, choosing the time windows and alternative address delivery add to the receiver’s experience, making the delivery company an interesting partner for parcel...

conference paper 2021

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Simulation Approach for Container Assignment under Uncertainty

de Koning, W.J. (author), Phillipson, F. (author), Chiscop, I. (author)

conference paper 2020

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Dynamic Assignment Vehicle Routing Problem with Time Windows

Los, K.J. (author), Phillipson, F. (author), van Kempen, E.A. (author), Quak, H.J. (author), Stelwagen, W. (author)

conference paper 2020

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Comparative Building Energy Simulation Study of Static and Thermochromically Adaptive Energy-Efficient Glazing in Various Climate Regions

Mann, D. (author), Yeung, C. (author), Habets, R. (author), Vroon, Z. (author), Buskens, P. (author)

The building sector contributes approximately one third of the total energy consumption worldwide. A large part of this energy is used for the heating and cooling of buildings, which can be drastically reduced by use of energy-efficient glazing. In this study, we performed building energy simulations on a prototypical residential building, and...

article 2020

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Recommendations for the improvement of existing European norms for testing the resistance of windows and glazed façades to explosive effects

Bedon, C.C.K. (author), van Doormaal, J.C.A.M. (author), Haberacker, C. (author), Hüsken, G. (author), Larcher, M. (author), Millon, O. (author), Saarenheimo, A. (author), Solomos, G. (author), Stolz, A. (author), Thamie, L. (author), Valsamos, G. (author), Williams, A. (author)

It is important to protect critical buildings (shopping centres, government buildings and embassies), infrastructure and utilities, train and underground stations from being damaged, destroyed or disrupted by deliberate acts of terrorism, criminal activity and malicious behaviour. Normal regulations and building guidelines do not generally take...

report 2015

document

UAV Mission Planning: From Robust to Agile

Evers, L. (author), Barros, A.I. (author), Monsuur, H. (author), Wagelmans, A. (author)

Unmanned Aerial Vehicles (UAVs) are important assets for information gathering in Intelligence Surveillance and Reconnaissance (ISR) missions. Depending on the uncertainty in the planning parameters, the complexity of the mission and its constraints and requirements, different planning methods might be preferred. The first two planning...

bookPart 2015

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A set of essential requirements towards standardising the numerical simulation of blast-loaded windows and facades

Bedon, C.C.K. (author), van Doormaal, J.C.A.M. (author), Haberacker, C. (author), Hüsken, G. (author), Larcher, M. (author), Millon, O. (author), Saarenheimo, A. (author), Solomos, G. (author), Stolz, A. (author), Thamie, L. (author), Valsamos, G. (author), Williams, A. (author)

The determination of the blast protection level of laminated glass windows and facades is of crucial importance, and it is normally done by using experimental investigations. In recent years numerical methods have become much more powerful also with respect to this kind of application. This report attempts to give a first idea of a possible...

report 2015

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Determinants of ventilation behavior in naturally ventilated dwellings: Identification and quantification of relationships

Levie, D. (author), de Kluizenaar, Y. (author), Hoes-van Oeffelen, E.C.M. (author), Hofstetter, H. (author), Janssen, S.A. (author), Spiekman, M.E. (author), Koene, F.G.H. (author)

Background: Ventilation in dwellings is essential for well-being and health. However, insight in determinants of ventilation behavior is still limited. Aim: Identifying determinants of ventilation behavior and quantifying relationships. Secondly, identifying households characteristics associated with low ventilation activity. Methods: In a cross...

article 2014

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A comparison of existing standards for testing blast resistant glazing and windows

Bedon, C.C.K. (author), van Doormaal, J.C.A.M. (author), Haberacker, C. (author), Hüsken, G. (author), Larcher, M. (author), Saarenheimo, A. (author), Solomos, G. (author), Stolz, A. (author), Thamie, L. (author), Valsamos, G. (author)

It is important to protect critical buildings (shopping centres, government buildings and embassies), infrastructure and utilities, train and underground stations against being damaged, destroyed or disrupted by deliberate acts of terrorism, criminal activity and malicious behaviour. Normal regulations and building guidelines do not generally...

report 2014

document

Online stochastic UAV mission planning with time windows and time-sensitive targets

Evers, L. (author), Barros, A.I. (author), Monsuur, H. (author), Wagelmans, A. (author)

In this paper we simultaneously consider three extensions to the standard Orienteering Problem (OP) to model characteristics that are of practical relevance in planning reconnaissance missions of Unmanned Aerial Vehicles (UAVs). First, travel and recording times are uncertain. Secondly, the information about each target can only be obtained...

article 2014

document

Openbaar Eindrapport : SEW: Smart Energy Windows : TKIZ01016

Wagenaar, T. (author), de Keizer, C. (author), Slooff, L. (author)

Het project Smart Energy Windows (SEW) is één van de eerste projecten die succesvol afgerond zijn binnen de Nederlandse Topsector Solar Energy. In dit project, dat in oktober 2012 begon, hebben Peer+, SEAC en ECN samengewerkt aan het verder ontwikkelen van schakelend glas op basis van liquid crystal technologie en aan het opzetten en analyseren...

report 2014

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Numerical simulations for classification of blast loaded laminated glass: Possibilities, limitations and recommendations

C, K. (author), van Doormaal, J.C.A.M. (author), Haberacker, C. (author), Hüsken, G. (author), Larcher, M. (author), Saarenheimo, A. (author), Solomos, G. (author), Stolz, A. (author), Thamie, L. (author), Bedon, C. (author)

It is important to protect critical buildings (shopping centres, government buildings and embassies), infrastructure and utilities, train and underground stations against being damaged, destroyed or disrupted by deliberate acts of terrorism, criminal activity and malicious behaviour. Normal regulations and building guidelines do not generally...

report 2014

document

Next generation post-combustion capture: Combined CO2 and SO2 removal

Misiak, K. (author), Sanchez Sanchez, C. (author), van Os, P.J. (author), Goetheer, E.L.V. (author)

A major consideration for post-combustion CO2 capture is the adverse effect of the presence of SO2 on the absorption desorption process. The most common approach is to remove the SO2 from the flue gases in a flue gas desulfurization (FGD) unit prior the CO2 recovery process. This paper reports the experimental and modeling results of a new...

article 2013

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Dynamics of charge carrier trapping in NO 2 sensors based on ZnO field-effect transistors

Andringa, A.-M. (author), Vlietstra, N. (author), Smits, E.C.P. (author), Spijkman, M.-J. (author), Gomes, H.L. (author), Klootwijk, J.H. (author), Blom, P.W.M. (author), de Leeuw, D.M. (author)

Nitrogen dioxide (NO 2) detection with ZnO field-effect transistors is based on charge carrier trapping. Here we investigate the dynamics of charge trapping and recovery as a function of temperature by monitoring the threshold voltage shift. The threshold voltage shifts follow a stretched-exponential time dependence with thermally activated...

article 2012

document

Geodynamics of the Gulf of California from surface wave tomography

Zhang, X. (author), Paulssen, H. (author)

The Gulf of California, which forms part of the Pacific-North American plate boundary, is an ideal place to investigate upper mantle dynamics in a continental rifting area. With 19 seismic stations located around the gulf, the NARS-Baja experiment (2002-2008) was designed to image its crustal and mantle structure. Here we present results of a...

article 2012

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Smart trade logistics - Compliance as an opportunity

Zomer, G.R. (author)

Facilitation of trade logistics aims at simplification and harmonization of border procedures and related documentation. This is an accelerator for global trade and economic growth and therefore a priority in global trade policy. Trends in logistics and supply chain security and innovations in European customs policy offer great opportunities to...

conference paper 2011