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Neemat, S.A.M. (author), Krasnov, O.A. (author), van der Zwan, W.F. (author), Yarovoy, Alexander (author)
Classical saw-tooth Frequency Modulated Continuous Wave (FMCW) radars experience a coupling between the maximum unambiguous Doppler-velocity interval, maximum operational range, range-resolution and processing gain. Operationally, a trade-off is often necessarily made between these parameters. In this paper, we propose a waveform and a...
journal article 2020
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Wijs, R. J.A. (author), Nane, G.F. (author), Leontaris, G. (author), Van Manen, T. R.W. (author), Wolfert, A.R.M. (author)
Utility operators must rely on predictive analyses regarding the availability of their subsurface assets, which highly depend on damage by increasing amounts of excavation work. However, straightforward use of standard statistical techniques, such as logistic regression or Bayesian logistic regression, does not allow for accurate predictions...
journal article 2020
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Stokkermans, T.C.A. (author), Veldhuis, L.L.M. (author), Soemarwoto, Bambang (author), Fukari, Raphaël (author), Eglin, Paul (author)
Auxiliary lift and/or thrust on a compound helicopter can introduce complex aerodynamic interactions between the auxiliary lift and thrust components and the main rotor. In this study high-fidelity computational fluid dynamics analyses were performed to capture the various aerodynamic interactions which are occurring for the Airbus RACER...
journal article 2020
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Abdul Madhar, S. (author), Mraz, Petr (author), Mor, A. R. (author), Ross, Robert (author)
Corona is one of the most common forms of partial discharge (PD) occurring in high voltage (HV) energy systems. The corona mechanism in air is not exclusive to the field of energy applications but has also been widely studied by physicists to theorize mechanisms of charge transfer during the different phases of gas discharge. The phases of the...
journal article 2020
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Dighe, V.V. (author), Avallone, F. (author), van Bussel, G.J.W. (author)
Ducted Wind Turbines (DWTs) can be used for energy harvesting in urban areas where non-uniform inflows might be the cause of aerodynamic and acoustic performance degradation. For this reason, an aerodynamic and aeroacoustic analysis of DWTs in yawed inflow condition is performed for two duct geometries: a baseline commercial DWT model, DonQi®...
journal article 2020
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Dighe, V.V. (author)
Ducted Wind Turbines (DWTs) are one of the many concepts that have been proposed to improve the energy extraction from wind in comparison to bare wind turbines. In reviewing the DWT studies, investigations based on the combined use of theoretical, computational, and experimental techniques have been presented. Although indicated in these studies...
doctoral thesis 2020
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Digna, R.F.M.O. (author)
The Eastern Nile (EN) riparian countries Egypt, Ethiopia and Sudan are currently<br/>developing several reservoir projects to contribute to the needs for energy and food<br/>production in the region. The Nile Basin, particularly the Eastern Nile Sub-basin, is<br/>considered one of the international river systems with potential conflicts between...
doctoral thesis 2020
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Broekema, Y.B. (author)
The Eastern Scheldt storm surge barrier is an icon of Dutch hydraulic engineering. Downstream of the barrier, large local erosion pits (scour holes) have formed adjacent to the applied bed protection after its construction. It was expected during the design phase that these would develop, but both the magnitude of the scour hole depth as well as...
doctoral thesis 2020
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Ozer, I.E. (author)
Flood defense systems are critical in protecting against catastrophic events which often lead to significant damage, fatalities or substantial socio-economic and environmental impact. Even though levees form a significant part of the existing flood defense systems, there is a limited knowledge of the different levee behavior processes and the...
doctoral thesis 2020
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Zeng, Q. (author)
Company performance measurement is fundamental for decision-makers to monitor a company's performance and to solve management problems. The evolution of company performance measurement tools started from a pure financial-biased framework. The first generation of company performance measurement tools was achieved through supplementing the...
doctoral thesis 2020
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Tillem, G. (author)
The enhancements in computation technologies in the last decades enabled businesses to analyze the data that is collected through their systems which helps to improve their services.<br/>However, performing data analytics remains a challenging task for small- and medium-scale companies due to the lack of in-house experience and computational...
doctoral thesis 2020
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Mesbah, S. (author)
Named Entity Recognition (NER) is an essential information retrieval task. It enables a wide range of natural language processing applications such as semantic search, machine translation, etc. The NER can be formulated as the task of identifying and typing words or phrases in a text that refers to certain classes of interest (e.g., disease,...
doctoral thesis 2020
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Wang, B. (author)
Breast cancer, being the most common cancer among females, is nowadays routinely diagnosed using X-ray mammography. Though this technique has proven its effectiveness in many cases, X-ray mammography has some disadvantages like reduced diagnostic sensitivity for dense breasts, need for strong breast compression and inability to assess tissues at...
doctoral thesis 2020
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Moret, J.L.T.M. (author)
Radionuclides are often used in the field of nuclear medicine. For some deceases the use of radionuclides is the best possible care, or even the only means of diagnosis or treatment. For these medical applications high specific activity (high activity per unit of mass) is required. Commonly, medical radionuclides are man-made. They can either be...
doctoral thesis 2020
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Holicki, M.E. (author)
In acoustic exploration and monitoring imaging plays a critical role in uncovering structure and minute changes therein. It is, however, often hampered by unfulfilled assumptions. One such assumption is that estimated incident and reflected wavefields at a reflector travel in opposite directions with respect to the reflector surface-normal...
doctoral thesis 2020
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Empinotti, T. (author)
Deep-water siliciclastic systems are of great societal relevance as their deposits<br/>in subsurface store hundreds of billions of barrels of hydrocarbons in different sedimentary basins worldwide. The sediment density flows that form these systems, termed turbidity currents, are capable of destroying subsea installations, such as...
doctoral thesis 2020
document
Zhang, Junhong (author), Liu, Zhiyuan (author), Dai, Huwei (author), Hedayati, R. (author), Yuan, Y. (author), Zhang, Guichang (author)
Bird impact on fan blades poses a serious threat to the operational safety of aircraft engines.In this study, a real bird model of mallard duck was developed using the smooth particle hydrodynamics method based on a CT scan of a mallard duck.The accuracy of the real bird model was verified by comparing the simulation results of the impact on...
journal article 2020
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Lavalette, N. (author), Bergsma, O.K. (author), Zarouchas, D. (author), Benedictus, R. (author)
Tubular adhesive joints, used in truss structures to join pultruded carbon fibre-reinforced polymer members to aluminium nodes, are modelled with varying dimensions. The numerical model uses a Cohesive Zone Modelling formulation with a trapezoidal traction-separation law for the adhesive layer, and experimental tests are carried to validate...
journal article 2020
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Henselmans, P.W.J. (author)
Surgical procedures are inherently invasive as they require the surgeon to cut into the body to create a surgical pathway towards the diseased area, resulting in surgical trauma for the patient. The field of Minimally Invasive Surgery (MIS) strives to reduce surgical trauma by minimizing the size and number of incisions. The used instrumentation...
doctoral thesis 2020
document
Duinmeijer, S.P.A. (author)
This is an experimental and theoretical research on the motion of buoyant particles in the flow of a free-surface vortex at moderate to high particle Reynolds numbers.
doctoral thesis 2020
Collection: research
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