Searched for: subject:"mathematics"
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Tursucu, S. (author)
Science teachers have the experience that students in secondary and higher education face difficulties with applying mathematics into science class, leaving less time for their core business of teaching science. This may be frustrating and time-consuming, overshadowing the science content that needs to be taught. In addition, in a large number...
doctoral thesis 2019
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Brandt, C. (author)
The research field of geometry processing is concerned with the representation, analysis, modeling, simulation and optimization of geometric data. In this thesis, we introduce novel techniques and efficient algorithms for problems in geometry processing, such as the modeling and simulation of elastic deformable objects, the design of tangential...
doctoral thesis 2019
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Laureni, M. (author), Weissbrodt, D.G. (author), Villez, Kris (author), Robin, Orlane (author), de Jonge, Nadieh (author), Rosenthal, Alex (author), Wells, GN (author), Nielsen, Jeppe Lund (author), Morgenroth, Eberhard (author), Joss, Adriano (author)
The control of nitrite-oxidizing bacteria (NOB) challenges the implementation of partial nitritation and anammox (PN/A) processes under mainstream conditions. The aim of the present study was to understand how operating conditions impact microbial competition and the control of NOB in hybrid PN/A systems, where biofilm and flocs coexist. A...
journal article 2019
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Jongbloed, G. (author)
Petrus (Piet) Groeneboom was born in Scheveningen in 1941 and grew up in Voorburg. Both villages are located near The Hague in The Netherlands; Scheveningen actually being part of The Hague. He attended the gymnasium of the Huygens lyceum. In 1959, he entered the University of Amsterdam, where he studied psychology. After his “candidate” exam ...
journal article 2019
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Boots, A. S.T. (author), Krijgsman, L. E. (author), de Ruiter, B. J.M. (author), Lampaert, S.G.E. (author), Spronck, J.W. (author)
Ferrofluid pocket bearings are a type of bearing that are able to carry a load using an air pocket encapsulated by a ferrofluid seal. Previously designed ferrofluid bearings show the great potential of the stick-slip-free and low viscous friction bearings, however until now the load capacity is limited. In this article a method is presented...
journal article 2019
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Admiraal, Wilfried (author), Post, Lysanne (author), Guo, Pengyue (author), Saab, Nadira (author), Makinen, Sari (author), Rainio, Ohto (author), Vuori, Johanna (author), Kortuem, G.W. (author), Bourgeois, J. (author), Danford, Gerard (author)
One promising way to cope with changing requirements from the labor market in the domain of Science, Technology, Engineering and Mathematics (STEM), but also to keep the field up to date, to start innovations and to advance the STEM domain as such is the use of student labs. In these labs, students work together in small groups imitating...
journal article 2019
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Prins, Peter J. (author), Wahls, S. (author)
Several non-linear fluid mechanical processes, such as wave propagation in shallow water, are known to generate solitons: localized waves of translation. Solitons are often hidden in a wave packet at the beginning and only reveal themselves in the far-field. With a special signal processing technique known as the non-linear Fourier transform ...
journal article 2019
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Abdullah, Nor Hakimin (author), Wan Abu Bakar, Wan Azelee (author), Hussain, Rafaqat (author), Bakar, Mohd Bakri (author), van Esch, J.H. (author)
Characterization utilizing X-ray photoelectron spectroscopy (XPS) revealed the presence of all the expected elements found in trishydrazone hydrogels (3). Morphological study on confocal laser scanning microscopy (CLSM) and atomic force microscopy (AFM) revealed the branching and bundling of fibers that led hydrogels network as well as the...
journal article 2018
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Mazidi, P. (author)
With increase in the number of sensors installed on sub-assemblies of industrial components, the amount of data collected is rapidly increasing. These data hold information in the areas of operation of the system and evolution of health condition of the components. Therefore, extracting the knowledge from the data can bring about significant...
doctoral thesis 2018
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da Silva Ferreira, M. (author), Lopes Vieira, B.M. (author), Ottens, M. (author)
BACKGROUND: Preferential crystallization is a common technique used in the purification of enantiomers, proving that crystallization may also be applied to the purification of very similar molecules by seeding the solution with the desired compound. Nonetheless, its application to other organic molecules is less widely documented in the...
journal article 2018
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Tursucu, S. (author), Spandaw, J.G. (author), Flipse, S.M. (author), Jongbloed, G. (author), de Vries, M.J. (author)
Senior pre-university education (SPE) students experience difficulties applying mathematics to physics. This paper reports the outcome of an online explorative quantitative study of teachers' belief systems about improving transfer of algebraic skills from mathematics into physics, conducted among 503 mathematics and physics teachers working...
journal article 2018
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Schormans, Matthew (author), Valente, V. (author), Demosthenous, Andreas (author)
Wireless power transfer systems, particularly those based on inductive coupling, provide an increasingly attractive method to safely deliver power to biomedical implants. Although there exists a large body of literature describing the design of inductive links, it generally focuses on single aspects of the design process. There is a variety...
journal article 2018
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Ferreira, Guilherme (author), Lin, Dong Qiang (author), Ottens, M. (author)
Expanded bed adsorption (EBA) emerged in the early 1990s in an attempt to integrate the clarification, capture and initial product concentration/purification process. Several mathematical models have been put forward to describe its operation. However, none of the models developed specifically for EBA allows simultaneous prediction of bed...
journal article 2018
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Middelburg, L.M. (author), el Mansouri, B. (author), Poelma, René H. (author), van Zeijl, H.W. (author), Wei, J. (author), Zhang, G.Q. (author), van Driel, W.D. (author)
The mechanical part of inertial sensors can be designed to have a large mechanical sensitivity, but also requires the transduction mechanism which translates this displacement. The overall system resolution in mechanical inertial sensors is dictated by the noise contribution of each stage and the magnitude of each sensitivity, see also Figure...
conference paper 2018
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van Driel, W.D. (author), Beijer, JGJ (author), Bikker, J.W. (author), van Blokland, C.H.M. (author), Ankomah, C. (author), Jacobs, B. (author)
We have seen an increasing number of reported colour maintenance issues in the market when it concerns LED-based products. Besides this, there are also requests to provide products that have < 2 SDCM colour point changes over lifetime. To understand the mechanisms behind colour maintenance in our LED-portfolio we have developed a...
conference paper 2018
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Jacobs, B. (author), van Driel, W.D. (author), Schuld, M. (author)
Commercial claims for LED-based products in terms of lumen maintenance are fully based on TM-21 extrapolations using LM-80 data. We presented an approach based on statistical data analytics, following the work from Yu & Tseng, at EuroSimE2015. Since then, more LM80 test data came available both for High Power (HP) and Mid Power (MP) LEDs....
conference paper 2018
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Lampaert, S.G.E. (author), Spronck, J.W. (author), van Ostayen, R.A.J. (author)
A ferrofluid pocket bearings is a type of hydrostatic bearing that uses a ferrofluid seal to encapsulate a pocket of air to carry a load. Their properties, combining a high stiffness with low (viscous) friction and absence of stick-slip, make them interesting for applications that require fast and high precision positioning. Knowledge on the...
journal article 2018
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van der Blij, N.H. (author), Ramirez Elizondo, L.M. (author), Spaan, M.T.J. (author), Bauer, P. (author)
Many modelling methods for the analysis of dc distribution grids only consider monopolar configurations and do not allow for mutual couplings to be taken into account. The modelling method presented in this paper aims to deal with both of these issues. A state-space approach was chosen for its flexibility and computational speed. The derived...
journal article 2018
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Tursucu, S. (author), Spandaw, J.G. (author), Flipse, S.M. (author), de Vries, M.J. (author)
Students in senior pre-university education face difficulties in the application of mathematics in physics. This paper presents the results of a qualitative study on teachers’ core beliefs about improving the transfer of algebraic skills to physics. Teachers were interviewed about their beliefs regarding a transfer problem from mathematics to...
journal article 2018
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Cabo, A.J. (author), Klaassen, R.G. (author)
“Prepare, Participate, Practice”: active learning in designing basic maths courses for engineering students at TU Delft works! The PRoject Innovation Mathematics Education (PRIME) at Delft University of Technology (TU Delft) is all about redesigning mathematics courses for engineers. This paper describes the process of developing, implementing,...
conference paper 2018
Searched for: subject:"mathematics"
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