123,514 research outputs found
T. S. Epstein, M. N. Panini, M. N. Srinivas, V. S. Parthasarathy, Besoins essentiels dans l'État du Karnataka, Inde
No full textÉtienne Gilbert. T. S. Epstein, M. N. Panini, M. N. Srinivas, V. S. Parthasarathy, Besoins essentiels dans l'État du Karnataka, Inde. In: Tiers-Monde, tome 25, n°100, 1984. Le développement en question, sous la direction de Serge Latouche. p. 947
Radiowave absorption and connected phenomena in the auroral zone, in relation to primary particles and magnetosphere
No full textUAG R-168, Final Report. Preface excerpt: This report presents the results of a program intended to explore the relations between ground-based auroral observations at College and satellite-based observations of the auroral primary particles, the radiation belt and the magnetosphere. The radio wave absorption aspects of the auroral phenomenon were given major emphasis.The investigation was financially supported by the National Science Foundation Grant GP 2779.Preface – Ch.1. Auroral zone electron flux and its relation to broadbeam radiowave absorption by R. Parthasarathy, F. T. Berkey, and D. Venkatesan – Ch.2. State of the magnetosphere during the breakup phase of the auroras by R. Parthasarathy and T. N. Davis – Ch.3. Diurnal variation of energetic trapped electrons and magnetic activity by J. L. Hook and R. Parthasarathy
Fourier algebras on homogeneous spaces
No full textAbstractSpectral synthesis and operator synthesis on a homogeneous space G/K, where K is a compact subgroup of a locally compact group G, are studied. Injection theorem for sets of spectral synthesis for A(G/K) is proved, extending the classical result of Reiter and more recent results of Kaniuth–Lau, Parthasarathy–Prakash and others. A simple direct image theorem for spectral synthesis is proved and an extension of the subgroup theorem and an alternate proof of the injection theorem are obtained as consequences. The relation between synthesis in the Fourier algebra A(G/K) and an appropriate Varopoulos algebra is obtained, subsuming earlier results of Varopoulos, Spronk–Turowska and Parthasarathy–Prakash. Study of relations between spectral synthesis and operator synthesis pioneered by Arveson and carried forward recently by Shulman–Turowska, Parthasarathy–Prakash and Ludwig–Turowska is undertaken on homogeneous spaces. Operator space methods are needed for this study, and more specifically, a characterisation of completely bounded multipliers on A(G/K) as the invariant part of a suitable weak⁎ Haagerup tensor product (or the space of Schur multipliers) is given and is used for this study
From quantum stochastic differential equations to Gisin-Percival state diffusion
No full textStarting from the quantum stochastic differential equations of Hudson and Parthasarathy Commun. Math. Phys. 93, 301 (1984) and exploiting the Wiener-Itô-Segal isomorphism between the boson Fock reservoir space �(L2(�+)�(�n��n)) and the Hilbert space L2(μ), where μ is the Wiener probability measure of a complex n-dimensional vector-valued standard Brownian motion (B(t),t�0), we derive a non-linear stochastic Schrödinger equation describing a classical diffusion of states of a quantum system, driven by the Brownian motion B. Changing this Brownian motion by an appropriate Girsanov transformation, we arrive at the Gisin-Percival state diffusion equation N. Gisin and J. Percival, J. Phys. A 167, 315 (1992). This approach also yields an explicit solution of the Gisin-Percival equation, in terms of the Hudson-Parthasarathy unitary process and a randomized Weyl displacement process. Irreversible dynamics of system density operators described by the well-known Gorini-Kossakowski-Sudarshan-Lindblad master equation is unraveled by coarse-graining over the Gisin-Percival quantum state trajectories. © 2017 Author(s)
Comparison of n-Dodecane/Brij 30/water and n-Decane/Brij 30/water nano-emulsions produced by PIT method
No full textIn this study, nano-emulsions were prepared using 19.2 wt% n-Dodecane (C12H26) and n-Decane (C10H22) oils as the dispersed phases, 4 wt% Brij 30 (C12E4) as surfactant and 76.8 wt% ultrapure water as the aqueous phase by phase inversion temperature (PIT) method. PIT points were determined by measuring the conductivity of the mixture as a function of temperature. The stability of nano-emulsions was determined by measuring the mean size, polydispersity index (PDI) and size distribution of droplets using dynamic light scattering (DLS) technique and monitoring them as a function of time. The nano-emulsions were also characterised using refractive index (RI), surface tension and pH measurements. The efficiency of reversibility test was also investigated on systems aged for various durations (i.e. 3, 4, 5, 9 and 470 days). Experimental results show that n-Dodecane system has higher conductivity values than n-Decane system and as a consequence the PIT values for n-Dodecane system were found to be higher than those for n-Decane system. All freshly produced nanoemulsions were found to be similar in appearance being opaque white with opal shine. But they were found to lose the shine and became duller with ageing. n-Dodecane systems seem to produce less stable nano-emulsions than n-Decane systems. They were also found to have larger droplets and higher RI values but mostly lower pH compared to n-Decane systems. Surface tension values for the reversed n-Decane system were found to be lower when compared to those for fresh one. Both n-Decane and n- Dodecane systems lead to an increase in droplet size over the study period of 3 days. Also, the variations in PDI and size distribution of droplets over the study period are significant in this work.Firoozeh Pourjavaheri-Jad, Rajarathinam Parthasarathy, Nhol Kao and Yung Ngotha
A Multi-Language Comparison of Influences on Author Verification using Character N-Grams
No full textWe create a new multi-language corpus for author verification based on Wikipedia talkpages, and evaluate the influence that differences in topic and time have on character n-gram author profiles. Topic alignment between two texts is found to increase author verification precision, and an authors writing style is found to change over time, but not more significantly after 3 years than after 1 year.Information ArchitectureWISElectrical Engineering, Mathematics and Computer Scienc
Appropriate Similarity Measures for Author Cocitation Analysis
No full textWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Coauthor prediction for junior researchers
No full textResearch collaboration can bring in different perspectives and generate more productive results. However, finding an appropriate collaborator can be difficult due to the lacking of sufficient information. Link prediction is a related technique for collaborator discovery; but its focus has been mostly on the core authors who have relatively more publications. We argue that junior researchers actually need more help in finding collaborators. Thus, in this paper, we focus on coauthor prediction for junior researchers. Most of the previous works on coauthor prediction considered global network feature and local network feature separately, or tried to combine local network feature and content feature. But we found a significant improvement by simply combing local network feature and global network feature. We further developed a regularization based approach to incorporate multiple features simultaneously. Experimental results demonstrated that this approach outperformed the simple linear combination of multiple features. We further showed that content features, which were proved to be useful in link prediction, can be easily integrated into our regularization approach. © 2013 Springer-Verlag
The vanishing author in computer-generated works: a critical analysis of recent Australian case law
No full textAbstract
The use of software is ubiquitous in the creation of many copyright works, yet the requirement in copyright law that every work have a human author who engages in independent intellectual effort means that its use may prevent copyright subsistence. Several recent Australian cases have refocused attention on authorship as an essential criterion of copyright subsistence, and these cases suggest that much computer-produced output may be authorless and thus lack copyright protection. This article, the first in a two-part series, analyses how each case deals with the question of authorship of computer-produced works and why the use of software diminishes copyright protection for a significant number of computer-generated works. The article critiques the application of conventional notions of human authorship developed in the pre-computer age to modern productions and suggests alternative approaches to authorship that satisfy both the major objectives of copyright policy and the need to adapt to the computer age. The article argues that, without a broader judicial approach to authorship of computer-generated works, Parliament must remedy the lacuna in protection for these ‘authorless’ works. Possible solutions for reform are suggested. In a forthcoming article, the author comprehensively examines those reform proposals
Diffusive author(s), cohesive author: Analysis of S/N (1994)
No full textThis study indicates the ways in which various aspects of the author(s) are brought forth in Dumb type’s performance art, the S/N production. Previous research has suggested a non-hierarchical organization of Dumb type and the absence of a “privileged author” in Dumb type’s collaborative work, S/N. However, the results that I have investigated from member’s interviews on the creative process of S/N along with my analysis of the recorded images of S/N, indicate a different aspect of the author(s). First, S/N was created through, so to speak, the collective ideas of the members of Dumb type. Further, S/N has at least nine quotations from previous performances, installations, and printed writings, besides the work-in-progress technique. Explicating one of the “author functions” as given by Michel Foucault, each text has plural subjects of the author. However, it has been revealed from members’ interviews that Teiji Furuhashi had a decision-making role in selecting the members’ ideas within the performance. Since then, S/N has had plural subjects of creation; however, Furuhashi is one of the subjects of creation along with the “privileged author.” S/N has plural authors (diffusive authors) yet at the same time, it has a “privileged author,” Teiji Furuhashi (cohesive author)
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