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669 results on '"Yadav, Preeti"'

27. MFLD-RSTF: Multimodal Face Anti-spoofing with rPPG and Deep Spatio-temporal Features

Author

Yadav, Preeti, Dhupar, Bhipanshu, Shukla, Ankit, Kumawat, Mahesh, Sharma, Manoj, Kacprzyk, Janusz, Series Editor, Pal, Nikhil R., Advisory Editor, Bello Perez, Rafael, Advisory Editor, Corchado, Emilio S., Advisory Editor, Hagras, Hani, Advisory Editor, Kóczy, László T., Advisory Editor, Kreinovich, Vladik, Advisory Editor, Lin, Chin-Teng, Advisory Editor, Lu, Jie, Advisory Editor, Melin, Patricia, Advisory Editor, Nedjah, Nadia, Advisory Editor, Nguyen, Ngoc Thanh, Advisory Editor, Wang, Jun, Advisory Editor, Malik, Hasmat, editor, Mishra, Sukumar, editor, Sood, Y. R., editor, García Márquez, Fausto Pedro, editor, and Ustun, Taha Selim, editor

Published
2024
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28. Machine Learning-Based Node Localization in IoT-Assisted WSN: An Initial Framework for Real-Time Applications

Author

Yadav, Preeti, Arora, Nitin, Sharma, S. C., Vishwakarma, Sandeep, Kacprzyk, Janusz, Series Editor, Gomide, Fernando, Advisory Editor, Kaynak, Okyay, Advisory Editor, Liu, Derong, Advisory Editor, Pedrycz, Witold, Advisory Editor, Polycarpou, Marios M., Advisory Editor, Rudas, Imre J., Advisory Editor, Wang, Jun, Advisory Editor, Pant, Millie, editor, Deep, Kusum, editor, and Nagar, Atulya, editor

Published
2024
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39. Macrophage Cx43 Is Necessary for Fibroblast Cytosolic Calcium and Lung Fibrosis After Injury

Author

Bhattacharyya, Aritra, Torre, Paola, Yadav, Preeti, Boostanpour, Kaveh, Chen, Tian Y, Tsukui, Tatsuya, Sheppard, Dean, Muramatsu, Rieko, Seed, Robert I, Nishimura, Stephen L, Jung, James B, Tang, Xin-Zi, Allen, Christopher DC, and Bhattacharya, Mallar

Subjects
Lung, 2.1 Biological and endogenous factors, Aetiology, Respiratory, Adenosine Triphosphate, Animals, Bleomycin, Calcium, Connexin 43, Fibroblasts, Idiopathic Pulmonary Fibrosis, Macrophages, Mice, Mice, Knockout, P2RX4, lung fibrosis, fibroblast, macrophage, calcium imaging, Immunology, Medical Microbiology
Abstract

Macrophages are paracrine signalers that regulate tissular responses to injury through interactions with parenchymal cells. Connexin hemichannels have recently been shown to mediate efflux of ATP by macrophages, with resulting cytosolic calcium responses in adjacent cells. Here we report that lung macrophages with deletion of connexin 43 (MacΔCx43) had decreased ATP efflux into the extracellular space and induced a decreased cytosolic calcium response in co-cultured fibroblasts compared to WT macrophages. Furthermore, MacΔCx43 mice had decreased lung fibrosis after bleomycin-induced injury. Interrogating single cell data for human and mouse, we found that P2rx4 was the most highly expressed ATP receptor and calcium channel in lung fibroblasts and that its expression was increased in the setting of fibrosis. Fibroblast-specific deletion of P2rx4 in mice decreased lung fibrosis and collagen expression in lung fibroblasts in the bleomycin model. Taken together, these studies reveal a Cx43-dependent profibrotic effect of lung macrophages and support development of fibroblast P2rx4 as a therapeutic target for lung fibrosis.

Published
2022

49. Generation and Distribution of Quantum Oblivious Keys for Secure Multiparty Computation

Author

Lemus, Mariano, Ramos, Mariana F., Yadav, Preeti, Silva, Nuno A., Muga, Nelson J., Souto, Andre, Paunkovic, Nikola, Mateus, Paulo, and Pinto, Armando N.

Subjects
Quantum Physics, Computer Science - Cryptography and Security
Abstract

The oblivious transfer primitive is sufficient to implement secure multiparty computation. However, secure multiparty computation based only on classical cryptography is severely limited by the security and efficiency of the oblivious transfer implementation. We present a method to efficiently and securely generate and distribute oblivious keys by exchanging qubits and by performing commitments using classical hash functions. With the presented hybrid approach, quantum and classical, we obtain a practical and high-speed oblivious transfer protocol, secure even against quantum computer attacks. The oblivious distributed keys allow implementing a fast and secure oblivious transfer protocol, which can pave the way for the widespread of applications based on secure multiparty computation., Comment: 11 pages, 5 figures

Published
2019
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50. Experimental Semi-quantum Key Distribution With Classical Users

Author

Massa, Francesco, Yadav, Preeti, Moqanaki, Amir, Krawec, Walter O., Mateus, Paulo, Paunković, Nikola, Souto, André, and Walther, Philip

Subjects
Quantum Physics
Abstract

Quantum key distribution, which allows two distant parties to share an unconditionally secure cryptographic key, promises to play an important role in the future of communication. For this reason such technique has attracted many theoretical and experimental efforts, thus becoming one of the most prominent quantum technologies of the last decades. The security of the key relies on quantum mechanics and therefore requires the users to be capable of performing quantum operations, such as state preparation or measurements in multiple bases. A natural question is whether and to what extent these requirements can be relaxed and the quantum capabilities of the users reduced. Here we demonstrate a novel quantum key distribution scheme, where users are fully classical. In our protocol, the quantum operations are performed by an untrusted third party acting as a server, which gives the users access to a superimposed single photon, and the key exchange is achieved via interaction-free measurements on the shared state. We also provide a full security proof of the protocol by computing the secret key rate in the realistic scenario of finite-resources, as well as practical experimental conditions of imperfect photon source and detectors. Our approach deepens the understanding of the fundamental principles underlying quantum key distribution and, at the same time, opens up new interesting possibilities for quantum cryptography networks, Comment: Version accepted by Quantum - 9 pages, 4 figures + Appendix (16 pages, 4 figures)

Published
2019
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