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Doherty, Edelle (author), Brychkov, Dmitry (author), Romero Herrera, N.A. (author), McLoughlin, Eilish (author), Roudil, Nadine (author), Smit, Sander (author), Maas, Stefan (author), Gauthier, Florence (author), Clifford, Eoghan (author), Delmonte, Branca Arthur (author)
Schools are learning communities where multiple stakeholders can collaborate to learn about energy efficiency, including via formal curricula, non-formal learning and day-to-day practices. Furthermore, by improving energy literacy among building occupants, the energy efficiency of schools can be improved. However, turning schools into learning...
conference paper 2022
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Maas, J.B. (author), Stefanovici, V. (author), van Gent, R.N.H.W. (author), Hoekstra, J.M. (author)
Many pilots in General Aviation use electronic add-ons aids in flight, which rely on satellite navigation information. This navigation information is often a single point of failure which is undesirable since the pilot relies on the information. This paper presents the results of research whether a novel mobile radar station can be used to...
conference paper 2020
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Maas, J.B. (author), van Gent, R.N.H.W. (author), Hoekstra, J.M. (author)
Although the main goal of a newly developed Collision Alert Radar is to observe airborne targets, it was found that reflections of the ground are received by the radar. The radar is carried on board of the aircraft, and the ground reflections may be used to detect flight information with respect to the terrain, something which is not possible...
conference paper 2020
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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
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Hoekstra, J.M. (author), Ellerbroek, Joost (author), Sunil, E. (author), Maas, J.B. (author)
Both U-space in Europe, as well as UTM in the USA, develop concepts and tools for UAV airspace. Enabling highdensity operations is one of the goals of these studies. Past and recent studies have analysed which factors affect the capacity of a UAV airspace. An improved understanding of this can lead to control methods for capacity management. Two...
conference paper 2018
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Xie, Wei (author), Nunez, Alfredo (author), Maas, Ron (author), Li, Z. (author)
This paper presents a methodology to support decision making based on the tram wheel-rail interface condition. The methodology relies on the following measurements: tram failure log-files regarding wheel-sliding events, monitored acoustics data and open source weather information. The proposed methodology consists of three stages: 1) data...
conference paper 2018
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Sunil, E. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author), Maas, J.B. (author)
In the context of decentralized separation, airspace stability pertains to the propagation of con?ict chain reactions as a result of tactical con?ict resolution maneuvers. This notion of airspace stability has been used in previous literature to develop a semi-empirical method for determining the capacity of a decentralized direct-routing...
conference paper 2017
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Tra, M.A.P. (author), Sunil, E. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author), Maas, J.B. (author)
Previous research relating airspace structure and ca-pacity has shown that a decentralized layered airspace concept, in which each altitude band limited horizontal travel to within a prede?ned heading range, improved safety when compared to unstructured airspace. However, the extent of the safety bene?ts of such layered airspace designs were not...
conference paper 2017
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van der Walle, P (author), Kramer, E. (author), van der Donck, J.C.J. (author), Mulckhuyse, W (author), Nijsten, L. (author), Bernal Arango, F.A. (author), de Jong, A. (author), van Zeijl, E. (author), Spruit, H. E.T. (author), van den Berg, J.H. (author), Nanda, G. (author), van Langen-Suurling, A.K. (author), Alkemade, P.F.A. (author), Pereira, S.F. (author), Maas, D.J. (author)
Particle defects are important contributors to yield loss in semi-conductor manufacturing. Particles need to be detected and characterized in order to determine and eliminate their root cause. We have conceived a process flow for advanced defect classification (ADC) that distinguishes three consecutive steps; detection, review and...
conference paper 2017
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Maas, T. R. (author), Bouts, M. N. (author), Joosten, G. J.P. (author), Jansen, J.D. (author)
When new wells are planned, typically the same trajectory is used for assessing the effectiveness of conventional wells and wells with smart completions. This study demonstrates that the economically optimized trajectory for smart and conventional wells can be very different. Two new well trajectory optimization algorithms were developed...
conference paper 2017
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Hoekstra, J.M. (author), Maas, J.B. (author), Tra, M.A.P. (author), Sunil, E. (author)
In many ATM studies experiments are performed to determine the capacity. This paper looks at the effect of airspace design on the capacity. Using an algebraic approach a relation is derived between the design parameters of a layered airspace design and the capacity of the airspace. The validity of the assumptions which are used in this...
conference paper 2016
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Maas, J.B. (author), Sunil, E. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author), Tra, M.A.P. (author)
Several conflict resolution algorithms for airborne self-separation rely on principles derived from the repulsive forces that exist between similarly charged particles. This research investigates whether the performance of the Modified Voltage Potential algorithm, which is based on this algorithm, can be improved using bio-inspired swarming...
conference paper 2016
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Sunil, E. (author), Maas, J.B. (author), Ellerbroek, Joost (author), Hoekstra, J.M. (author), Tra, M.A.P. (author)
The work that is presented in this paper is part of an ongoing study on the relationship between structure and capacity of decentralized airspace concepts. In this paper, the effect of traffic stability, which considers the occurrence of conflict chain reactions as a result of conflict resolution maneuvers, on capacity is examined closely. Using...
conference paper 2016
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Maas, P.J. (author), Grobbe, N. (author), Slob, E.C. (author), Mulder, W.A. (author)
For multi-parameter problems, such as the seismoelectric system, sensitivity analysis through resolution functions is a low-cost, fast method of determining whether measured fields are sensitive to certain subsurface parameters. We define a seismoelectric resolution function for the inversion of a bulk density perturbation. The synthetic data...
conference paper 2015
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Van Heel, D.D. (author), Maas, T. (author), De Gijt, J.G. (author), Said, M. (author)
This paper describes quay wall and bridge designs in different materials, which are compared with regard the the CO2-emission and the Life Cycle Analysis (LCA). For this study the requirements and boundary conditions from the Euromax Terminal quay wall, in the Port of Rotterdam, have been used. The preliminary designs of the quay wall (made...
conference paper 2011
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Reijneveld, J. (author), Maas, A. (author), Choukroun, D. (author), Kuiper, J.M. (author)
Building on previous works, this paper introduces a novel continuous-time stochastic optimal linear quaternion estimator under the assumptions of rate gyro measurements and of vector observations of the attitude. A quaternion observation model, which observation matrix is rank degenerate, is reduced to a two-dimensional model via a maximum...
conference paper 2011
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Maas, T. (author), De Gijt, J.G. (author), Van Heel, D.D. (author)
In this paper quay wall designs in different materials are compared with regard to the CO2-emission and the Life Cycle Analysis (LCA). For this study the requirements and boundary conditions of the quay wall in the Euromax Terminal, the Port of Rotterdam, have been used. An overview of preliminary designs of the tender phase with a concrete...
conference paper 2011
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Maas, D. (author), Van veldhoven, E. (author), Chen, P. (author), Sidorkin, V. (author), Salemink, H. (author), Van der Drift, E. (author), Alkemade, P. (author)
The recently introduced helium ion microscope (HIM) is capable of imaging and fabrication of nanostructures thanks to its sub-nanometer sized ion probe [1,2]. The unique interaction of the helium ions with the sample material provides very localized secondary electron emission, thus providing a valuable signal for high-resolution imaging as well...
conference paper 2010
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Maas, D. (author), Van Veldhoven, E. (author), Chen, P. (author), Sidorkin, V. (author), Salemink, H. (author), Van der Drift, E. (author), Alkemade, P. (author)
The recently introduced helium ion microscope (HIM) is capable of imaging and fabrication of nanostructures thanks to its sub-nanometer sized ion probe [1,2]. The unique interaction of the helium ions with the sample material provides very localized secondary electron emission, thus providing a valuable signal for high-resolution imaging as well...
conference paper 2009
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Bauer, J. (author), Bykov, V. (author), Maas, U. (author)
The usage of detailed chemical kinetics for the mathematical modeling of combustion processes is desirable, but leads to a high computational effort. In the present work one of the methods of simplification of chemical kinetics - Intrinsic low-dimensional manifolds (ILDMs) is considered. Whereas in most CFD applications ILDMs are calculated in...
conference paper 2006
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