Searched for: subject:"process"
(41 - 60 of 775)

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Chen, G. (author), Davis, D.J. (author), Krause, Markus (author), Aivaloglou, E. (author), Hauff, C. (author), Houben, G.J.P.M. (author)
Massive Open Online Courses (MOOCs) aim to educate the world. More often than not, however, MOOCs fall short of this goal — a majority of learners are already highly educated (with a Bachelor degree or more) and come from specific parts of the (developed) world. Learners from developing countries without a higher degree are underrepresented,...
journal article 2018
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Meijers, B.M. (author), van Oosterom, P.J.M. (author), Suba, R. (author), Peng, D. (author)
Traditionally, the content for vario-scale maps has been created using a ‘one fits all’ approach equal for all scales. Initially only the delete/merge operation was used to create the vario-scale data using the importance and the compatibility functions defined at class level (and evaluated at instance level) to create the tGAP structure with...
journal article 2018
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Liu, J. (author), Isufi, E. (author), Leus, G.J.T. (author)
In the field of signal processing on graphs, graph filters play a crucial role in processing the spectrum of graph signals. This paper proposes two different strategies for designing autoregressive moving average (ARMA) graph filters on both directed and undirected graphs. The first approach is inspired by Prony's method, which...
journal article 2018
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Brous, P.A. (author), Janssen, M.F.W.H.A. (author), Herder, P.M. (author)
Purpose: Managers are increasingly looking to adopt the Internet of Things (IoT) to include the vast amount of big data generated in their decision-making processes. The use of IoT might yield many benefits for organizations engaged in civil infrastructure management, but these benefits might be difficult to realize as organizations are not...
journal article 2018
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Wolszczak, W.W. (author), Dorenbos, P. (author)
In this article we present a method of characterizing scintillating materials by digitization of each individual scintillation pulse followed by digital signal processing. With this technique it is possible to measure the pulse shape and the energy of an absorbed gamma photon on an event-by-event basis. In contrast to time-correlated single...
journal article 2018
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Ganesan, Abiseka Akash (author), Houtepen, A.J. (author), Crisp, R.W. (author)
From a niche field over 30 years ago, quantum dots (QDs) have developed into viable materials for many commercial optoelectronic devices. We discuss the advancements in Pb-based QD solar cells (QDSCs) from a viewpoint of the pathways an excited state can take when relaxing back to the ground state. Systematically understanding the fundamental...
review 2018
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Cao, Pinqiang (author), Wu, Jianyang (author), Zhang, Zhisen (author), Fang, Bin (author), Peng, Li (author), Li, Tianshu (author), Vlugt, T.J.H. (author), Ning, Fulong (author)
A sound knowledge of fundamental mechanical properties of water ice is of crucial importance to address a wide range of applications in earth science, engineering, as well as ice sculpture and winter sports, such as ice skating, ice fishing, ice climbing, bobsleighs, and so on. Here, we report large-scale molecular dynamics (MD) simulations...
journal article 2018
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Uta, Alexandru (author), Au, S.T. (author), Ilyushkin, A.S. (author), Iosup, A. (author)
Graphs are a natural fit for modeling concepts used in solving diverse problems in science, commerce, engineering, and governance. Responding to the diversity of graph data and algorithms, many parallel and distributed graph-processing systems exist. However, until now these platforms use a static model of deployment: they only run on a pre...
conference paper 2018
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Naglič, M. (author), Popov, M. (author), van der Meijden, M.A.M.M. (author), Terzija, Vladimir (author)
Electrical power system monitoring, protection, operation, and control schemes are undergoing significant changes toward the next generation fully automated, resilient, and self-healing grids. At present, there still exists a lack of available user-friendly tools for the synchronized measurement technology supported application design. This...
journal article 2018
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Sharma, Rahul (author), Zhang, J. (author), Langelaar, M. (author), van Keulen, A. (author), Aragon, A.M. (author)
In this paper, we propose a stress recovery procedure for low-order finite elements in 3D. For each finite element, the recovered stress field is obtained by satisfying equilibrium in an average sense and by projecting the directly calculated stress field onto a conveniently chosen space. Compared with existing recovery techniques, the...
journal article 2018
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Chen, Z. (author), Qu, Yingxia (author), Zeilstra, Christiaan (author), van der Stel, Jan (author), Sietsma, J. (author), Yang, Y. (author)
Melting and reduction of fine iron ore particles in the gas environment of a HIsarna smelting cyclone is a critically important topic, but very limited information is currently available except for some experimental data from high temperature drop tube furnace (HTDF). This work discusses the equilibrium state of reacting iron ore in the HTDF...
journal article 2018
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Pourmousavian, Seyednaser (author), Kuo, Feng-Wei (author), Siriburanon, Teerachot (author), Babaie, M. (author), Staszewski, R.B. (author)
This paper proposes an ultra-low-voltage (ULV) fractional-N all-digital PLL (ADPLL) powered from a single 0.5-V supply. While its digitally controlled oscillator (DCO) runs directly at 0.5 V, an internal switched-capacitor dc-dc converter ``doubles'' the supply voltage to all the digital circuitry and particularly regulates the time-to...
journal article 2018
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Ewald, V.A. (author), Groves, R.M. (author), Benedictus, R. (author)
In this paper, we investigated transducer placement strategies for detecting cracks in primary aircraft structures using ultrasonic Structural Health Monitoring (SHM). The approach developed is for an expected damage location based on fracture mechanics, for example fatigue crack growth in a high stress location. To assess the performance of the...
journal article 2018
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Wei, X. (author), Kumar, M. (author), Schuttelaars, H.M. (author)
To investigate the dominant sediment transport and trapping mechanisms, a semi-analytical three-dimensional model is developed resolving the dynamic effects of salt intrusion on sediment in well-mixed estuaries in morphodynamic equilibrium. As a study case, a schematized estuary with a converging width and a channel-shoal structure...
journal article 2018
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Luthfi, A. (author), Rehena, Z. (author), Janssen, M.F.W.H.A. (author), Crompvoets, joep (author)
Governments are releasing their data to the public to accomplish benefits like the creation of transparency, accountability, citizen engagement and to enable business innovation. At the same time, decision-makers are reluctant to open their data due to some potential risks like misuse, sensitivity, ownership, and inaccuracy of the data. The...
conference paper 2018
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Saikrishna, N. (author), Reddy, G. Pradeep Kumar (author), Munirathinam, B. (author), Dumpala, Ravikumar (author), Jagannatham, M. (author), Ratna Sunil, B. (author)
In the present work, multi walled carbon nanotubes (MWCNT) reinforced magnesium (Mg) matrix composite was fabricated by friction stir processing (FSP) with an aim to explore its mechanical and electrochemical behavior. Microstructural observations showed that the thickness of the produced composite layer was in the range of 2500 μm. FSP...
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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Zhou, Yatong (author), Li, Shuhua (author), Zhang, D. (author), Chen, Yangkang (author)
We propose a new low-rank based noise attenuation method using an efficient algorithm for tracking subspaces from highly corrupted seismic observations. The subspace tracking algorithm requires only basic linear algebraic manipulations. The algorithm is derived by analysing incremental gradient descent on the Grassmannian manifold of...
journal article 2018
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Tonnon, Pieter Koen (author), Huisman, B.J.A. (author), Stam, G. N. (author), van Rijn, L. C. (author)
Mega-nourishments, aiming at providing long-term coastal safety, nature qualities and recreational space, have been applied recently at the Holland coast and are considered at various other places in the world. Methods to quickly evaluate the potential and lifetime of these coastal mega nourishments are therefore very much desired, which is...
journal article 2018
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Cui, Tianci (author), Vasconcelos, Ivan (author), Manen, Dirk Jan Van (author), Wapenaar, C.P.A. (author)
Marchenko redatuming can retrieve the impulse response to a subsurface virtual source from the single-sided surface reflection data with limited knowledge of the medium. We illustrate the concepts and practical aspects of Marchenko redatuming on a simple 1D acoustic lossless medium in which the coupled Marchenko equations are exact. Defined...
journal article 2018
Searched for: subject:"process"
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