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Flaschel, Moritz (author), Kumar, Siddhant (author), De Lorenzis, Laura (author)We propose an approach for data-driven automated discovery of material laws, which we call EUCLID (Efficient Unsupervised Constitutive Law Identification and Discovery), and we apply it here to the discovery of plasticity models, including arbitrarily shaped yield surfaces and isotropic and/or kinematic hardening laws. The approach is...journal article 2022
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Poudel, Prakash (author), Sharma, S. (author), Ansari, Mohamed Nainar Mohamed (author), Kumar, Pushpendra (author), Ibrahim, Sobhy M. (author), Vaish, Rahul (author), Kumar, Rajeev (author), Thomas, Paramanandam (author)In this study, a method for the bacterial disinfection of drinking water in the water storage systems based on the electric potential generated from a piezoelectric wind energy harvester is presented. First, an efficient galloping piezoelectric wind energy harvester is designed by adding curve- shaped attachments to the bluff body of the...journal article 2022
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Vermunt, P.C. (author), Steele-Dunne, S.C. (author), Khabbazan, S. (author), Kumar, V. (author), Judge, Jasmeet (author)For a good interpretation of radar backscatter sensitivity to vegetation water dynamics, we need to know which parts of the vegetation layer control that backscatter. However, backscatter sensitivity to different depths in the canopy is poorly understood. This is partly caused by a lack of observational data to describe the vertical moisture...journal article 2022
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Lips, Esther H. (author), Kumar, Tapsi (author), Megalios, Anargyros (author), Visser, Lindy L. (author), Sheinman, Michael (author), Fortunato, Angelo (author), Shah, Vandna (author), Hoogstraat, Marlous (author), Wessels, L.F.A. (author)Ductal carcinoma in situ (DCIS) is the most common form of preinvasive breast cancer and, despite treatment, a small fraction (5–10%) of DCIS patients develop subsequent invasive disease. A fundamental biologic question is whether the invasive disease arises from tumor cells in the initial DCIS or represents new unrelated disease. To address...journal article 2022
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Thakolkaran, P. (author), Joshi, A. (author), Zheng, Y. (author), Flaschel, Moritz (author), De Lorenzis, Laura (author), Kumar, Siddhant (author)We propose a new approach for unsupervised learning of hyperelastic constitutive laws with physics-consistent deep neural networks. In contrast to supervised learning, which assumes the availability of stress–strain pairs, the approach only uses realistically measurable full-field displacement and global reaction force data, thus it lies...journal article 2022
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Kumar, Gulshan (author), Saha, Rahul (author), Conti, M. (author), Thomas, Reji (author), Devgun, Tannishtha (author), Rodrigues, Joel J.P.C. (author)Internet-of-Thing (IoT) faces various security attacks. Different solutions exist to mitigate the intrusion problems. However, the existing solutions lack behind in dealing with heterogeneity of attack sources and features. The future anticipated demand of devices' connections also urge the need of new solutions addressing the concerns of...journal article 2022
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- Kumar, Vimal (author), Atta, Arnab (author), Pant, Kamal K. (author), Stankiewicz, A.I. (author) contribution to periodical 2022
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Voss, Jendrik (author), Martin, R.P. (author), Sander, Oliver (author), Kumar, Siddhant (author), Kochmann, Dennis M. (author), Neff, Patrizio (author)Deciding whether a given function is quasiconvex is generally a difficult task. Here, we discuss a number of numerical approaches that can be used in the search for a counterexample to the quasiconvexity of a given function W. We will demonstrate these methods using the planar isotropic rank-one convex function Wmagic+(F)=λmaxλmin-logλmaxλmin...journal article 2022
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Kumar, Shashi (author), Babu, Arun (author), Agrawal, Shefali (author), Asopa, U. (author), Shukla, S. (author), Maiti, Abhisek (author)The Polarimetric Synthetic Aperture Radar (PolSAR) systems use electromagnetic radiations of different polarizations in the microwave frequency to collect the scattering information from targets on the Earth. Nevertheless, as with any other electronic device, the PolSAR systems are also not ideal and subjected to distortions. The most...journal article 2022
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Mandal, Dipankar (author), Kumar, V. (author), Lopez-Sanchez, Juan M. (author), Rao, Y. S. (author), McNairn, Heather (author), Bhattacharya, Avik (author), Mitchell, Scott (author)Biophysical parameters are descriptors of crop growth and production estimates. Retrieval of these biophysical parameters from synthetic aperture radar sensors at operational scales is highly interesting given the increase in access to data from radar missions. Vegetation backscattering can be simulated using the water cloud model (WCM). Crop...book chapter 2022
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Kumar, Sujay (author), Kolassa, Jana (author), Reichle, Rolf (author), Crow, Wade (author), de Lannoy, Gabrielle (author), de Rosnay, Patricia (author), MacBean, Natasha (author), Quaife, Tristan (author), Steele-Dunne, S.C. (author)The task of quantifying spatial and temporal variations in terrestrial water, energy, and vegetation conditions is challenging due to the significant complexity and heterogeneity of these conditions, all of which are impacted by climate change and anthropogenic activities. To address this challenge, Earth Observations (EOs) of the land and...review 2022
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Kumar, V. (author), Huber, Manuel (author), Rommen, Björn (author), Steele-Dunne, S.C. (author)Synthetic Aperture Radar (SAR) data handling, processing, and interpretation are barriers preventing a rapid uptake of SAR data by application specialists and non-expert domain users in the field of agricultural monitoring. To improve the accessibility of Sentinel-1 data, we have generated a reduced-volume, multi-year Sentinel-1 SAR database....journal article 2022
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Kumar, Prabhat (author), Langelaar, Matthijs (author)This paper presents a robust density-based topology optimization approach for synthesizing pressure-actuated compliant mechanisms. To ensure functionality under manufacturing inaccuracies, the robust or three-field formulation is employed, involving dilated, intermediate and eroded realizations of the design. Darcy's law in conjunction with a...journal article 2022
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Joshi, A. (author), Thakolkaran, P. (author), Zheng, Y. (author), Escande, Maxime (author), Flaschel, Moritz (author), De Lorenzis, Laura (author), Kumar, Siddhant (author)Within the scope of our recent approach for Efficient Unsupervised Constitutive Law Identification and Discovery (EUCLID), we propose an unsupervised Bayesian learning framework for discovery of parsimonious and interpretable constitutive laws with quantifiable uncertainties. As in deterministic EUCLID, we do not resort to stress data, but...journal article 2022
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Razavi, Saman (author), Hannah, David M. (author), Elshorbagy, Amin (author), Kumar, Sujay (author), Marshall, Lucy (author), Solomatine, D.P. (author), Dezfuli, Amin (author), Sadegh, Mojtaba (author), Famiglietti, James (author)Machine learning (ML) applications in Earth and environmental sciences (EES) have gained incredible momentum in recent years. However, these ML applications have largely evolved in ‘isolation’ from the mechanistic, process-based modelling (PBM) paradigms, which have historically been the cornerstone of scientific discovery and policy support....journal article 2022
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Liu, Xiaolong (author), Fu, Dafang (author), Zevenbergen, C. (author), Yu, Meixiu (author), Kumar, Alagarasan Jagadeesh (author)As a result of the fast growth of remote sensing and data assimilation technology, many global land use land cover (LULC) and climate reanalysis data sets have been used to advance our understanding of climate and environmental change. This paper investigates the precipitation variations of the Yangtze Delta Megalopolis by using precipitation...journal article 2022
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Roy, Kaustav (author), Shastri, V.U. (author), Kumar, Akshay (author), Rout, Jagi (author), Isha, Isha (author), Kalyan, Kritank (author), Prakash, Jaya (author), Pratap, Rudra (author)We report on the development of a novel piezo-MEMS-based optofluidic platform to detect the concentration of various species dissolved in a fluid. This platform employs piezoelectric micromachined ultrasound transducers (PMUTs) to work as a photoacoustic receiver, receiving ultrasound from fluid targets present in microfluidic channels while...conference paper 2022
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Alfarih, Mashael (author), Augusto, João B. (author), Knott, Kristopher D. (author), Fatih, Nasri (author), Kumar, M. Praveen (author), Boubertakh, Redha (author), Hughes, Alun D. (author), Moon, James C. (author), Weingärtner, S.D. (author), Captur, Gabriella (author)Background: To assess the feasibility of biventricular SAPPHIRE T<sub>1</sub> mapping in vivo across field strengths using diastolic, systolic and dark-blood (DB) approaches. Methods: 10 healthy volunteers underwent same-day non-contrast cardiovascular magnetic resonance at 1.5 Tesla (T) and 3 T. Left and right ventricular (LV, RV) T<sub>1<...journal article 2022
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- Ganguly, Auroop R. (author), van Breukelen, B.M. (author), Evers, Mariele (author), Hendricks Franssen, Harrie Jan (author), Illangasekare, Tissa (author), Kumar, Praveen (author), Steefel, Carl (author), Taylor, Richard G. (author) contribution to periodical 2022
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Dwivedi, Yogesh K. (author), Hughes, Laurie (author), Baabdullah, Abdullah M. (author), Ribeiro-Navarrete, Samuel (author), Giannakis, Mihalis (author), Al-Debei, Mutaz M. (author), Dennehy, Denis (author), Metri, Bhimaraya (author), Buhalis, Dimitrios (author), Cheung, Christy M.K. (author), Conboy, Kieran (author), Doyle, Ronan (author), Dubey, Rameshwar (author), Dutot, Vincent (author), Felix, Reto (author), Goyal, D. P. (author), Gustafsson, Anders (author), Hinsch, Chris (author), Jebabli, Ikram (author), Janssen, M.F.W.H.A. (author), Kim, Young Gab (author), Kim, Jooyoung (author), Koos, Stefan (author), Kreps, David (author), Kshetri, Nir (author), Kumar, Vikram (author), Ooi, Keng Boon (author), Papagiannidis, Savvas (author), Pappas, Ilias O. (author), Polyviou, Ariana (author), Park, Sang Min (author), Pandey, Neeraj (author), Queiroz, Maciel M. (author), Raman, Ramakrishnan (author), Rauschnabel, Philipp A. (author), Shirish, Anuragini (author), Sigala, Marianna (author), Spanaki, Konstantina (author), Wei-Han Tan, Garry (author), Tiwari, Manoj Kumar (author), Viglia, Giampaolo (author), Wamba, Samuel Fosso (author)The metaverse has the potential to extend the physical world using augmented and virtual reality technologies allowing users to seamlessly interact within real and simulated environments using avatars and holograms. Virtual environments and immersive games (such as, Second Life, Fortnite, Roblox and VRChat) have been described as antecedents of...journal article 2022