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3. Symmetric Signcryption and E2EE Group Messaging in Keybase

Author

Jaeger, Joseph, Kumar, Akshaya, Stepanovs, Igors, 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, Joye, Marc, editor, and Leander, Gregor, editor

Published
2024
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4. Cobbler’s Son

Author

Phillauria, Mohan Lal, Kumar, Akshaya, and Singh, Navdeep

Published
2023

7. Memory-Tight Multi-challenge Security of Public-Key Encryption

Author

Jaeger, Joseph, Kumar, Akshaya, 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, Agrawal, Shweta, editor, and Lin, Dongdai, editor

Published
2022
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9. Optical and Electrical Simulation of Single GaAs Nanowire/Ge Solar Cells

Author

Kumar, Akshaya, Samajdar, Dip Prakash, Sachchidanand, V, 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, 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, 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, Zhang, Junjie James, Series Editor, Sikander, Afzal, editor, Acharjee, Dulal, editor, Chanda, Chandan Kumar, editor, Mondal, Pranab Kumar, editor, and Verma, Piyush, editor

Published
2020
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19. Provincialising Bollywood : Bhojpuri cinema and the vernacularisation of North Indian media

Author

Kumar, Akshaya

Subjects
791.43, PN1993 Motion Pictures
Abstract

This thesis is an investigation of the explosive growth of Bhojpuri cinema alongside the vernacularisation of north Indian media in the last decade. As these developments take place under the shadow of Bollywood, the thesis also studies the aesthetic, political, and infrastructural nature of the relationship between vernacular media industries – Bhojpuri in particular – and Bollywood. The thesis then argues that Bhojpuri cinema, even as it provincialises Bollywood, aspires to sit beside it instead of displacing it. The outrightly confrontational readings notwithstanding, the thesis grapples with the ways in which the vernacular departs from its corresponding cosmopolitan form and how it negotiates cultural representation as an industry. The two chapters in Part I provide a narrative account of the discourses and media-texts that saturate the Bhojpuri public sphere. The prevailing discourses and the dominant texts, the thesis argues, resonate with each other, but also delimit the destiny of Bhojpuri film and media. The tug of war between the cultural and economic valuations of the Bhojpuri commodity, as between enchantment and discontent with its representative prowess, as also between ‘traditional’ values and reformist ‘modernity’, leaves us within an uncomfortable zone. The thesis shows how aspirations to male stardom consolidate this territory and become the logic by which the industry output keeps growing, in spite of a failing media economy. Each of the three chapters in Part II traces the historical trajectory of language, gendered use of public space, and piracy, respectively. In this part, the thesis establishes the analytical provenance for the emergence of Bhojpuri cinema in particular, and vernacular media in general. While Bhojpuri media allows Bhojpuri to seek its autonomy from state-supported Hindi, it also occupied the fringe economy of rundown theatres as Bollywood sought to move towards the multiplexes. If the advent of audiocassettes led to the emergence of Bhojpuri media sanskar, the availability of the single-screen economy after the arrival of multiplexes cleared the space for the theatrical exhibition of Bhojpuri cinema. The suboptimal transactions of counterfeit media commodities, on the other hand, regulate the legal counterpart and widen the net of distribution beyond the film theatre. I argue that the suboptimal practices are embedded within the unstable meanwhile. As an occupant of this meanwhile temporality, Bhojpuri film and media, whether in rundown theatres or on cheap mobile phones, grow via contingent and strategic coalitions. This thesis, then, argues that cinema as a form makes it possible for Bhojpuri speaking society to confront, and reconcile with, its own corporeality – the aural and visual footprints, the discursive and ideological blind spots, and the aspiration to break free. On account of the media economy and its power to ratify a new order of hierarchy via celebrity, Bhojpuri media threatens to transform the social order, yet remains open to the possibility of manipulation by which the old order could rechristen itself as new.

Published
2015

37. Laser-induced breakdown spectroscopy of europium ions doped in silicate glass

Author

Carter, Michael K., Kumar, Akshaya, and Sharma, Prakash C.

Subjects
Silicates -- Properties, Laser spectroscopy -- Usage, Science and technology
Abstract

ABSTRACT The present study involves the development of [Eu.sup.3+] ion doped glasses via sol gel method, and recording their laser-induced breakdown (LIBS) spectrum. By making glasses of various molar concentrations [...]

Published
2014

40. Detection sensitivity of laser-induced breakdown spectroscopy for Cr II in liquid samples

Author

Rai, Nilesh K., Rai, Awadhesh K., Kumar, Akshaya, and Thakur, Surya N.

Subjects
Trace analysis -- Methods, Liquids -- Properties, Laser spectroscopy -- Methods, Chromium -- Properties, Astronomy, Physics
Abstract

The performance of laser-induced breakdown spectroscopy (LIBS) has been evaluated for detection of toxic metals such as Cr in water. Pure aqueous solutions (unitary matrix) with variable Cr concentration were used to construct calibration curves and to estimate the LIBS limit of detection (LOD). The calibration curves for Cr in a binary matrix (Cr plus Cd) and a tertiary matrix (Cr plus Cd and Co) were used to evaluate the matrix effect on the LOD. The LOD for Cr was found to be 1.1, 1.5, and 2.0ppm (parts in [10.sup.6]) in a unitary, binary, and tertiary matrix, respectively. Once calibrated, the system was utilized for the detection and quantification of the Cr in tannery wastewater collected from different locations in the industrial area of Kanpur, India, where Cr concentrations were determined to be far higher than the U.S. Environmental Protection Agency safe drinking water limit of 0.05 ppm. OCIS codes: 140.3440, 350.5400, 120.6200, 300.6360, 300.2140.

Published
2008

41. A midlife crisis for the treaty-based Human Rights system?

Author

Kumar, Akshaya

Subjects
Human rights, International relations, Political science, United Nations. General Assembly -- International relations, World Bank Group. International Finance Corporation -- International relations
Abstract

A single short document of 30 articles'--the 1948 Universal Declaration of Human Rights--'has probably had more impact on mankind than any other document in modern history,' said Navi Pillay, then [...]

Published
2017

42. Applications of laser induced breakdown spectroscopy

Author

Kumar, Akshaya and Sharma, Prakash C.

Subjects
Laser spectroscopy -- Methods -- Usage, Science and technology, Usage, Methods
Abstract

ABSTRACT Applications of laser induced breakdown spectroscopy (LIBS) in solid and liquid phases have been presented. Use of single pulse and double pulse LIBS to enhance the detection limit of [...]

Published
2006

44. Characterization of malignant tissue cells by laser-induced breakdown spectroscopy

Author

Kumar, Akshaya, Yueh, Fang-Yu, Singh, Jagdish P., and Burgess, Shane

Subjects
Optics -- Research, Cancer -- Diagnosis, Lasers -- Research, Laser, Astronomy, Physics
Abstract

Cancer diagnosis and classification is extremely complicated and, for the most part, relies on subjective interpretation of biopsy material. Such methods are laborious and in some cases might result in different results depending on the histopathologist doing the examination. Automated, real-time diagnostic procedures would greatly facilitate cancer diagnosis and classification. Laser-induced breakdown spectroscopy (LIBS) is used for the first time to our knowledge to distinguish normal and malignant tumor cells from histological sections. We found that the concentration of trace elements in normal and tumor cells was significantly different. For comparison, the tissue samples were also analyzed by an inductively coupled plasma emission spectroscopy (ICPES) system. The results from the LIBS measurement and ICPES analysis were in good agreement. OCIS codes: 140.3440, 170.6930, 300.2140, 300.6210, 300.6360.

Published
2004

45. Detection of trace elements in liquids by laser-induced breakdown spectroscopy with a Meinhard nebulizer

Author

Kumar, Akshaya, Yueh, Fang Y., Miller, Tracy, and Singh, Jagdish P.

Subjects
Spectrum analysis -- Research, Astronomy, Physics
Abstract

The laser-induced breakdown spectroscopy of magnesium, manganese, and chromium atoms by use of a commercial Meinhard nebulizer originally designed for inductively coupled plasma measurements is described. This is the first time, to our knowledge, that this nebulizer has been used for laser-induced breakdown spectroscopy measurements. The limit of detection is slightly lower when the nebulizer rather than a liquid jet is used in single-pulse laser excitation. In addition we present the response characteristics of the nebulizer, such as effects of variations in purge gas and liquid flow rate, that are different from normal operating specifications. The effects of gate delay, gate width, and laser power variations were also studied. The objective of the present research has been to consider a new operating mode and conditions in which a better limit of detection of trace elements in water can be obtained. OCIS codes: 140.3440, 300.2140, 300.6210, 300.6360, 120.6200.

Published
2003

46. Double-pulse laser-induced breakdown spectroscopy with liquid jets of different thicknesses

Author

Kumar, Akshaya, Yueh, Fang Y., and Singh, Jagdish P.

Subjects
Spectrum analysis -- Research, Astronomy, Physics
Abstract

Double-pulse laser-induced breakdown spectroscopy of magnesium in water has been performed with different jet thicknesses. A Meinhard nebulizer has been used to create a jet of 0.3-mm diameter, whereas a homemade liquid jet injector produced a thicker jet of 1.0-mm diameter. The relationship of line intensity to delay time between the two laser pulses for these two jets is compared and discussed. The limits of detection in these two jets are also determined and compared. The line intensity observed from the double-pulse measurement is correlated with the measured electron density calculated with the [H.sub.[alpha]] line. Also, the behavior of plasma density relative to time delay between the lasers is described. OCIS codes: 140.3440, 300.2140, 300.6210, 300.6360, 120.6200.

Published
2003

47. Effect of steady magnetic field on laser-induced breakdown spectroscopy

Author

Rai, Virendra N., Zhang, Hansheng, Yueh, Fang Y., Singh, Jagdish P., and Kumar, Akshaya

Subjects
Spectrum analysis -- Research, Astronomy, Physics
Abstract

Effects of a steady magnetic field on the laser-induced breakdown spectroscopy of certain elements (Mn, Mg, Cr, and Ti) in aqueous solution were studied, in which the plasma plume expanded across an external steady magnetic field (~5 kilogauss). Nearly 1.5 times enhancement in the line emission intensity was observed in the presence of the magnetic field. The temporal evolution of the line emission showed a significant enhancement in plasma emission between 2- and 7-[micro]s gate delays for Mg in the presence of the magnetic field (5-30 [micro]s for Mn). This enhancement in the emission is attributed to an increase in the rate of recombination because of an increase in plasma density due to a magnetic confinement after cooling the plasma. The increase in the optical line emission due to magnetic confinement was absent when the plasma was hot with a dominant background (continuum) emission. The limits of detection of Mg and Mn were reduced by a factor of two in the presence of a steady magnetic field of 5 kilogauss. OCIS codes: 140.3440, 300.2140, 300.6210, 300.6360, 120.6200.

Published
2003

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