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Abboudi, Hassan (author), El Ghazi, Haddou (author), En-nadir, Redouane (author), Basyooni, Mohamed A. (author), Jorio, Anouar (author), Zorkani, Izeddine (author)This paper presents a thorough numerical investigation focused on optimizing the efficiency of quantum-well intermediate-band solar cells (QW-IBSCs) based on III-nitride materials. The optimization strategy encompasses manipulating confinement potential energy, controlling hydrostatic pressure, adjusting compositions, and varying thickness. The...journal article 2024
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Li, Meng (author), Shen, Yanzhe (author), Ye, Guixin (author), He, Jialing (author), Zheng, Xin (author), Zhang, Zijian (author), Zhu, Liehuang (author), Conti, M. (author)Digital forensics is crucial to fight crimes around the world. Decentralized Digital Forensics (DDF) promotes it to another level by channeling the power of blockchain into digital investigations. In this work, we focus on the privacy and security of DDF. Our motivations arise from (1) how to track an anonymous- and-malicious data user who...journal article 2024
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van Nieuwburg, W.C.A.M. (author), van Spreuwel, B.J.J. (author), Tran, Minh Tâm Kevin (author), Yang, M.D. (author), Greidanus, A.J. (author), Mulder, G. (author), Tummers, M.J. (author), Westerweel, J. (author), Suijker, W. (author), van Wijk, R. (author)The principal aim of the work presented here is to investigate and demonstrate that a forward tilted rowing blade would result in a more efficient and effective motion of the blade through the water that would result in a higher boat speed when an equal input power is provided. A 1:5 scaled rowing boat is used to determine the performance of...journal article 2023
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Rahimi, Serveh (author), Shooshtari, M. (author)Here we investigated a novel layer-based optimization technique to improve the performance of a CZTSe solar cell. By using this technique, the optical behavior and electrical properties of the proposed solar cell improved significantly as a result of the changes in the layer specifications and the layer materials. The structure of the cell...journal article 2022
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Wang, Haochuan (author), Feng, Pan (author), Geng, Zifan (author), Liu, Qi (author)The deterioration of organic coatings on concrete is closely linked to the efficiency in the protection process of reinforced structures. In the present work, polyurea resin and epoxy resin, which are widely used engineering coatings, were selected to measure and compare the performance under artificial aging. Fourier Transform infrared...conference paper 2021
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Shekhar, A. (author)Energy transition will inevitably lead to greater electrification. For example, it is anticipated that electrical energy demand will rise by at least 2-3 times by 2050 with increasing share of electric vehicles and heat pumps. This will translate to significant increase in power demand on the existing medium voltage distribution grid, resulting...doctoral thesis 2020
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De Klerk, Rick (author), Vegter, Riemer J.K. (author), Leving, Marika T. (author), de Groot, Sonja (author), Veeger, H.E.J. (author), van der Woude, Lucas H.V. (author)The use of a manual wheelchair is critical to 1% of the world's population. Human powered wheeled mobility research has considerably matured, which has led to improved research techniques becoming available over the last decades. To increase the understanding of wheeled mobility performance, monitoring, training, skill acquisition, and...journal article 2020
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Shekhar, A. (author), Ramirez Elizondo, L.M. (author), Soeiro, Thiago B. (author), Bauer, P. (author)Hybrid ac–dc reconfigurable link technology can find interesting applications in medium-voltage power distribution. These are networks having dc links operating in parallel alongside ac links with post-fault reconfiguration capability. A given system can operate in different configurations while maintaining equivalent capacity during (n−1)...journal article 2020
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Shekhar, A. (author), Soeiro, Thiago B. (author), Ramirez Elizondo, L.M. (author), Bauer, P. (author)Hybrid ac-dc distribution systems with multiple parallel operating ac and dc links are being developed to maximize system capacity during (n-1) contingencies. This paper shows that offline reconfigurability between such ac and dc links post-fault clearance allows an additional design flexibility of reducing the required substation converter...journal article 2020
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Zhu, B. (author), Al-Ars, Z. (author), Hofstee, H.P. (author)Binary Convolutional Neural Networks (CNNs) have significantly reduced the number of arithmetic operations and the size of memory storage needed for CNNs, which makes their deployment on mobile and embedded systems more feasible. However, after binarization, the CNN architecture has to be redesigned and refined significantly due to two reasons:...conference paper 2020
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Nateghizad, M. (author)In order to achieve practical e-healthcare systems, five requirements should be addressed, namely 1) availability, 2) integrity, 3) accuracy, 4) confidentiality, and 5) efficiency. Using remote computer storage and processing services satisfies availability, integrity, and efficiency. However, it introduces privacy concerns regarding the leakage...doctoral thesis 2019
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Recalde Moreno Del Rocio, M.D.R. (author), Woudstra, T. (author), Aravind, P.V. (author)Nowadays, there is worldwide interest in diversifying energy supply. In this regard, biomass is the best possible renewable organic substitute for fossil fuels. In particular, the energy content of very wet biomass, recovered with appropriate technology, could potentially be used for power generation. In addition to power generation, this...journal article 2019
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Korthals Altes, W.K. (author)Planning is assessed not only based on its ability to improve the living environment through place making, but also based on its role in facilitating investments in the built environment. This paper approaches the combination of these functions as planning for multiple land use. Contracts, rather than plans, are used to bridge these functions...journal article 2019
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Xue, Caihong (author), Li, Wengui (author), Li, Jianchun (author), Tam, Vivian W.Y. (author), Ye, G. (author)Encapsulation-based self-healing technology is an effective method for healing the crack-deteriorated cementitious material. Encapsulation-based self-healing initiates by crack occurrence and progresses by chemical reaction of released self-healing agents in the cracks, which are contained in capsules. In this paper, a review has been...journal article 2018
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- Fechner, U. (author) doctoral thesis 2016
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Greidanus, A.J. (author), Delfos, R. (author), Westerweel, J. (author)The flow motions in the turbulent boundary layer between water and a rowing boat initiate a turbulent skin friction. Reducing this skin friction results in better rowing performances. A Taylor-Couette (TC) facility was used to verify the power losses due to velocity fluctuations P<sub>V′</sub> in relation to the total power, as a function of...conference paper 2016
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Zong, H. (author), Kotsonis, M. (author)A simplified model is established to estimate the jet exit density variation of a plasma synthetic jet actuator (PSJA) driven by a capacitive arc discharge. This model, in conjunction with phase-locked planar particle imaging velocimetry (PIV) measurements, enables the calculation of jet mechanical energy for different operating conditions....journal article 2016
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Correale, G. (author), Avallone, F. (author), Yu Starikovskiy, A. (author)A method to quantify the efficiency of the first two operational stages of a nanosecond dielectric barrier discharge (ns-DBD) plasma actuator is proposed. The method is based on the independent measurements of the energy of electrical pulses and the useful part of the energy which heats up the gas in the discharge region. Energy input is...journal article 2016
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- Varotto, S.F. (author), Hoogendoorn, R.G. (author), Van Arem, B. (author), Hoogendoorn, S.P. (author) conference paper 2014
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Smit, G. (author), Plettenburg, D.H. (author), Van der Helm, F.C. (author)The goal of this study was to find an efficient method of energy transmission for application in an anthropomorphic underactuated body-powered (BP) prosthetic hand. A pulley-cable finger and a hydraulic cylinder finger were designed and tested to compare the pulley-cable transmission principle with the hydraulic cylinder transmission principle....journal article 2014