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1,652 results on '"Singh, N. K."'

22. Marker assisted selection: a paradigm shift in Basmati breeding

Author

Singh, A. K., Gopalakrishnan, S., Singh, V. P., Prabhu, K. V., Mohapatra, T., Singh, N. K., Sharma, T. R., Nagarajan, M., Vinod, K. K., Singh, Devinder, Singh, U. D., Chander, Subhash, Atwal, S. S., Seth, Rakesh, Singh, Vikas K., Ellur, Ranjith K., Singh, Atul, Anand, Deepti, Khanna, Apurva, Yadav, Sheel, Goel, Nitika, Singh, Ashutosh, Shikari, Asif B., Singh, Anita, and Marathi, Balram

Published
2011

33. Inferring magnetic helicity spectrum in spherical domains: the method and example applications

Author

Prabhu, A. P., Singh, N. K., Käpylä, M. J., and Lagg, A.

Subjects
Astrophysics - Solar and Stellar Astrophysics
Abstract

Obtaining observational constraints on the role of turbulent effects for the solar dynamo is a difficult, yet crucial, task. Without such knowledge, the full picture of the operation mechanism of the solar dynamo cannot be formed. The magnetic helicity spectrum provides important information about the $\alpha$ effect. Here we demonstrate a formalism in spherical geometry to infer magnetic helicity spectra directly from observations of the magnetic field, taking into account the sign change of magnetic helicity across the Sun's equator. Using an angular correlation function of the magnetic field, we develop a method to infer spectra for magnetic energy and helicity. The retrieval of the latter relies on a fundamental definition of helicity in terms of linkage of magnetic flux. We apply the two-scale approach, previously used in Cartesian geometry, to spherical geometry for systems where a sign reversal of helicity is expected across the equator at both small and large scales. We test the method by applying it to an analytical model of a fully helical field, and to magneto-hydrodynamic simulations of a turbulent dynamo. The helicity spectra computed from the vector potential available in the models are in excellent agreement to the spectra computed solely from the magnetic field using our method. In a next test, we use our method to obtain the helicity spectrum from a synoptic magnetic field map corresponding to a Carrington rotation. We observe clear signs of a bihelical spectrum of magnetic helicity. Our formalism makes it possible to infer magnetic helicity in spherical geometry, without the necessity of computing the magnetic vector potential. This has the advantage of being gauge invariant. It has many applications in solar and stellar observations, but can also be used to analyze global magnetoconvection models of stars and compare them with observations., Comment: 10 pages, 6 figures, 3 appendices, submitted to Astronomy and Astrophysics

Published
2021
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35. Employing Soft Computing-Based GGA-MLP for Hyperparameter Optimization in COVID-19-Infected Lung Image Data Classification

Author

Sinha, Anurag, Singh, N. K., Garg, Namit, Verma, Amritansh, Anum, Alisha, Desai, Jay D., Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Ray, K. P., editor, Dixit, Arati, editor, Adhikari, Debashis, editor, and Mathew, Ribu, editor

Published
2023
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36. Formalising Liveness Properties in Event-B with the Reflexive EB4EB Framework

Author

Rivière, P., Singh, N. K., Aït-Ameur, Y., Dupont, G., Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Rozier, Kristin Yvonne, editor, and Chaudhuri, Swarat, editor

Published
2023
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38. Consumer Buying Behavior Analysis During COVID-19 Phase Using Statistical Data Mining and Multi-verse Stochastic Algorithm

Author

Sinha, Anurag, Bhargavi, Mopuru, Singh, N. K., Narayan, Devendra, Garg, Namit, Pal, Siddhartha, Angrisani, Leopoldo, Series Editor, Arteaga, Marco, Series Editor, Panigrahi, Bijaya Ketan, Series Editor, Chakraborty, Samarjit, Series Editor, Chen, Jiming, Series Editor, Chen, Shanben, Series Editor, Chen, Tan Kay, Series Editor, Dillmann, Rüdiger, Series Editor, Duan, Haibin, Series Editor, Ferrari, Gianluigi, Series Editor, Ferre, Manuel, Series Editor, Hirche, Sandra, Series Editor, Jabbari, Faryar, Series Editor, Jia, Limin, Series Editor, Kacprzyk, Janusz, Series Editor, Khamis, Alaa, Series Editor, Kroeger, Torsten, Series Editor, Li, Yong, Series Editor, Liang, Qilian, Series Editor, Martín, Ferran, Series Editor, Ming, Tan Cher, Series Editor, Minker, Wolfgang, Series Editor, Misra, Pradeep, Series Editor, Möller, Sebastian, Series Editor, Mukhopadhyay, Subhas, Series Editor, Ning, Cun-Zheng, Series Editor, Nishida, Toyoaki, Series Editor, Oneto, Luca, Series Editor, Pascucci, Federica, Series Editor, Qin, Yong, Series Editor, Seng, Gan Woon, Series Editor, Speidel, Joachim, Series Editor, Veiga, Germano, Series Editor, Wu, Haitao, Series Editor, Zamboni, Walter, Series Editor, Zhang, Junjie James, Series Editor, Singh, Yashwant, editor, Verma, Chaman, editor, Zoltán, Illés, editor, Chhabra, Jitender Kumar, editor, and Singh, Pradeep Kumar, editor

Published
2023
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39. Standalone Event-B Models Analysis Relying on the EB4EB Meta-theory

Author

Rivière, P., Singh, N. K., Aït-Ameur, Y., Dupont, G., Goos, Gerhard, Founding Editor, Hartmanis, Juris, Founding Editor, Bertino, Elisa, Editorial Board Member, Gao, Wen, Editorial Board Member, Steffen, Bernhard, Editorial Board Member, Yung, Moti, Editorial Board Member, Glässer, Uwe, editor, Creissac Campos, Jose, editor, Méry, Dominique, editor, and Palanque, Philippe, editor

Published
2023
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44. Accelerometer Mass Effects on Vibration Frequencies of Magnesium Alloy Fixed–Fixed Beam

Author

Yadav, Anuj, Singh, N. K., Cavas-Martínez, Francisco, Series Editor, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Series Editor, Ivanov, Vitalii, Series Editor, Kwon, Young W., Series Editor, Trojanowska, Justyna, Series Editor, di Mare, Francesca, Series Editor, Govindan, Kannan, editor, Kumar, Harish, editor, and Yadav, Sanjay, editor

Published
2022
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45. Modelling and Simulation on Behaviours of Aluminium Alloys

Author

Kumar, Ravi, Singh, N. K., Cavas-Martínez, Francisco, Series Editor, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Series Editor, Ivanov, Vitalii, Series Editor, Kwon, Young W., Series Editor, Trojanowska, Justyna, Series Editor, di Mare, Francesca, Series Editor, Govindan, Kannan, editor, Kumar, Harish, editor, and Yadav, Sanjay, editor

Published
2022
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46. Deformation Behaviours of Magnesium Alloy AZ41 Beyond Necking Using Extrapolation Method

Author

Gupta, Manish Kumar, Singh, N. K., Cavas-Martínez, Francisco, Series Editor, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Series Editor, Ivanov, Vitalii, Series Editor, Kwon, Young W., Series Editor, Trojanowska, Justyna, Series Editor, di Mare, Francesca, Series Editor, Govindan, Kannan, editor, Kumar, Harish, editor, and Yadav, Sanjay, editor

Published
2022
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47. Sensitivity of Al/Mg/Ti/Cu/SiC Hybrid Composite to Static Loads

Author

Prakash, Kumar, Singh, N. K., Cavas-Martínez, Francisco, Series Editor, Chaari, Fakher, Series Editor, Gherardini, Francesco, Series Editor, Haddar, Mohamed, Series Editor, Ivanov, Vitalii, Series Editor, Kwon, Young W., Series Editor, Trojanowska, Justyna, Series Editor, di Mare, Francesca, Series Editor, Govindan, Kannan, editor, Kumar, Harish, editor, and Yadav, Sanjay, editor

Published
2022
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