8,280 research outputs found
Alternatives to Author-Centric Knowledge Organization
This article explores the differences between collaborative and collective authorship, focusing on the most obvious example of the latter, the Internet, and the challenges it poses for knowledge organization. An alternative to current author-centric knowledge systems is presented in the experimental Quanta system
10 + 1 to 3 + 1 in an Early Universe with mutually BPS Intersecting Branes
We assume that the early universe is homogeneous, anisotropic, and is
dominated by the mutually BPS 22'55' intersecting branes of M theory. The
spatial directions are all taken to be toroidal. Using analytical and numerical
methods, we study the evolution of such an universe. We find that,
asymptotically, three spatial directions expand to infinity and the remaining
spatial directions reach stabilised values. Any stabilised values can be
obtained by a fine tuning of initial brane densities. We give a physical
description of the stabilisation mechanism. Also, from the perspective of four
dimensional spacetime, the effective four dimensional Newton's constant G_4 is
now time varying. Its time dependence will follow from explicit solutions. We
find in the present case that, asymptotically, G_4 exhibits characteristic log
periodic oscillations.Comment: Latex file, 59 pages, 7 figures. Version 2: A minor correction and a
reference added. Version 3: Critical discussion of the main assumptions is
added in sections I and VIII; two references added. To appear in Physical
Review
Research Performance of Top Universities in Karnataka: Based on Scopus Citation Index
Paper furnishes the results of the analysis of citations of research papers covered by Scopus database of Elsevier, USA. The coverage of the database is complete; citations depicted by Scopus upto June 2019 are considered. Study projects the research performance of six well established top universities in the state of Karnataka with regard the number of research papers covered by scholarly journals and number of scholars who have cited these research papers. Also projected is the average citations per research paper and h-Index of authors. Paper also projects the performance of top faculty members who are involved in contributing research papers. Collaboration with authors of foreign countries in doing research work and publishing papers are also comprehended in the study, including the trends in publishing research papers which depict the decreasing and increasing trends of research wor
Research Performance of Top Universities in Karnataka: Based on Scopus Citation Index
Paper furnishes the results of the analysis of citations of research papers covered by Scopus database of Elsevier, USA. The coverage of the database is complete; citations depicted by Scopus upto June 2019 are considered. Study projects the research performance of six well established top universities in the state of Karnataka with regard the number of research papers covered by scholarly journals and number of scholars who have cited these research papers. Also projected is the average citations per research paper and h-Index of authors. Paper also projects the performance of top faculty members who are involved in contributing research papers. Collaboration with authors of foreign countries in doing research work and publishing papers are also comprehended in the study, including the trends in publishing research papers which depict the decreasing and increasing trends of research wor
Singularity Free (Homogeneous Isotropic) Universe in Graviton-Dilaton Models
We present a class of graviton-dilaton models in which a homogeneous
isotropic universe, such as our observed one, evolves with no singularity at
any time. Such models may stand on their own as interesting models for
singularity free cosmology, and may be studied further accordingly. They may
also arise from string theory. We discuss critically a few such possibilities.Comment: 11 pages. Latex file. Revised in response to referees' Comments.
Results remain same. To appear in Phys. Rev. Let
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