Searched for: subject%3A%22massive%22
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Mohammadkarimi, M. (author), Dobre, Octavia A. (author), Win, Moe Z. (author)
Existing wireless communication systems have been mainly designed to provide substantial gain in terms of data rates. However, 5G and Beyond will depart from this scheme, with the objective not only to provide services with higher data rates. One of the main goals is to support massive machine-type communications (mMTC) in the Internet-of-Things...
journal article 2022
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Gurvits, L. (author), Paragi, Zsolt (author), Casasola, Viviana (author), Conway, John (author), Davelaar, Jordy (author), Falcke, Heino (author), Fender, Rob (author), Frey, Sándor (author), Fromm, Christian M. (author)
This paper presents the ESA Voyage 2050 White Paper for a concept of TeraHertz Exploration and Zooming-in for Astrophysics (THEZA). It addresses the science case and some implementation issues of a space-borne radio interferometric system for ultra-sharp imaging of celestial radio sources at the level of angular resolution down to (sub-)...
journal article 2021
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Wong, L.Y.J. (author), Baars, Martine (author), He, Min (author), de Koning, Björn (author), Paas, Fred (author)
Online learning environments demand learners to self-regulate their learning but many learners are poor at self-regulated learning (SRL). In this paper, two studies were conducted to examine the effect of two SRL supports, i.e., guiding goal setting and planning using an approach known as mental contrasting and implementation intentions (MCII...
journal article 2021
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Wang, D. (author), Rueda, José L. (author), Rakhshani, E. (author), van der Meijden, M.A.M.M. (author)
Unlike synchronous generators, wind turbines cannot directly respond to large disturbances, which may cause transient instability, due to their power electronic-based interface and maximum power control strategy. To effectively monitor the influence of wind turbines, this paper proposes an approach that combines decision trees (DTs), and a...
journal article 2020
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Wang, Cheng Ming (author), Wang, Q. (author), Gaber, Abdo (author), Guevara, Andrea P. (author), Pollin, Sofie (author)
A massive MIMO network can serve ten's of users simultaneously. However, in dense scenarios the users are potentially closely-spaced, potentially resulting in substantial inter-user interference. Scheduling can overcome this by selecting the users that lead to the highest combined spectral efficiency. As scheduling comes with a significant...
journal article 2020
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Dong, J. (author), Soeiro, Thiago B. (author), Koeners, G.J.M. (author), Bauer, P. (author)
This paper presents a method to implement online laboratory sessions for education in Electrical Engineering on subjects related to electrical machines and drives. The assignments for the laboratory sessions consist of: the preparation homework, where students have to study relevant theories; the development of circuit simulations; and the...
conference paper 2020
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RACHURI, Vishnu (author)
Ubiquitous connectivity requirements and stringent quality-of-services (QoS)<br/>in recent wireless communications demand new revolutionary wireless network<br/>technologies to support the exponentially increasing traffic growth.<br/>Massive multiple-input-multiple-output (MIMO) with the capability of high<br/>spectral efficiency achieved by...
master thesis 2019
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Gatou, Maria (author)
Massive Open Online Courses (MOOCs) have the potential to make quality education affordable and available to the masses and reduce the gap between the most privileged and the most disadvantaged learners worldwide. However, this potential is overshadowed by low completion rates, often below 15%. Due to the high level of autonomy that is required...
master thesis 2019
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Khuntia, S.R. (author), Rueda, José L. (author), van der Meijden, M.A.M.M. (author)
Location of wind power plants and demand centres are not always close by; hence, the transmission of energy puts a burden on existing grid infrastructure. This unwanted burden necessitates transmission lines to operate more and more frequently close to their operating limits. To alleviate such situations, this research addresses the advantages...
journal article 2019
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Wang, Yue (author), Zhang, Yu (author), Tian, Zhi (author), Leus, G.J.T. (author), Zhang, Gong (author)
This paper develops efficient channel estimation techniques for millimeter-wave (mmWave) massive multiple-input multiple-output (MIMO) systems under practical hardware limitations, including an arbitrary array geometry and a hybrid hardware structure. Taking on an angle-based approach, this work adopts a generalized array manifold separation...
journal article 2019
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Türkeli, Serdar (author), Schophuizen, M.J.F. (author)
In this article, we highlight the pressing need for integrating the windows of opportunities that digital transformation of education opens up with circular economy education to accelerate the achievements of sustainability outcomes. Circular economy transition, as a multi-scalar process, relates to several contexts, e.g., product, firm,...
journal article 2019
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Raftopoulou, Maria (author)
5G networks are expected to be used in many markets, one of which is the Factories of the Future (FoF). In the FoF, applications like regular monitoring and controlling of components (e.g. temperature) are introducing the need of massive deployment of sensors and actuators. Additionally, sensors which are monitoring time-critical components of...
master thesis 2018
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Kol, T.R. (author)
The ubiquity of large virtual worlds and their growing complexity in computer graphics require efficient representations. This means that we need smart solutions for the underlying storage of these complex environments, but also for their visualization. How the virtual world is best stored and how it is subsequently shown to the user in an...
doctoral thesis 2018
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Khalil, Mohammad (author), Davis, Dan (author), Wong, Jacqueline (author)
It has been 10 years since the first MOOC was prepared by George Siemens and Stephen Downes on connectivism and connected knowledge at the University of Manitoba. From 25 participants only to hundreds of thousands of students in 2011, MOOCs became a hype in technology-enhanced learning context. Nevertheless, the phenomenon of MOOCs has become...
conference paper 2018
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Zarghami-Hamrah, Saeid (author), de Vries, M.J. (author)
In the present study, we refer to Carr's theory on the nature of educational practice for evaluating teaching as a praxis in relation to two major changes, i.e. ubiquitous learning and massive communication caused by MOOCs. With regard to the first change, we argue that the teacher is faced with the problem of encouraging the learners to get...
journal article 2018
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Daalhuizen, J.J. (author), Schoormans, J.P.L. (author)
Providing online design education offers a unique opportunity for learning, by providing high quality learning experiences to distributed audiences for free. It has its challenges as well, particularly when the aim is use ‘active learning’ strategies (Biggs &amp; Tang, 2011), which are necessary when teaching design. In this paper, we report...
journal article 2018
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Kol, T.R. (author), Bauszat, P. (author), Lee, S. (author), Eisemann, E. (author)
We present a scalable solution to render complex scenes from a large amount of viewpoints. While previous approaches rely either on a scene or a view hierarchy to process multiple elements together, we make full use of both, enabling sublinear performance in terms of views and scene complexity. By concurrently traversing the hierarchies, we...
journal article 2018
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Khalil, M.F.D. (author), Ebner, Martin (author), Admiraal, Wilfried (author)
Massive Open Online Courses (MOOCs) require students’ motivation either intrinsically or extrinsically to complete any of its courses. Even though MOOCs enjoy great popularity and bring many benefits to the educational community, some concerns arise with MOOC advancement. In fact, MOOCs are affected by low completion rate and face issues with...
conference paper 2017
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Zhu, Jianing (author), Luo, Haiwen (author), Yang, Zhigang (author), Zhang, Chi (author), van der Zwaag, S. (author), Chen, H. (author)
Kinetics of the austenite (γ) to ferrite (α) transformation and the reverse ferrite (α) to austenite (γ) transformation in a series of Fe-X (X = Ni, Mn and Co) binary alloys has been experimentally and theoretically investigated. A transition from partitioning to partitionless transformation has been predicted to occur during both the γ→α and...
journal article 2017
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Davis, D.J. (author), Jivet, I. (author), Kizilcec, René F. (author), Chen, G. (author), Hauff, C. (author), Houben, G.J.P.M. (author)
Social comparison theory asserts that we establish our social and personal worth by comparing ourselves to others. In in-person learning environments, social comparison offers students critical feedback on how to behave and be successful. By contrast, online learning environments afford fewer social cues to facilitate social comparison. Can...
conference paper 2017
Searched for: subject%3A%22massive%22
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