764 research outputs found

    India's collaboration in science and technology with Southeast Asian countries

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    The collaboration in science and technology (S&T) is fast emerging in the scientific world. India recognized the importance of international scientific collaboration in S&T quite early and has signed a number of S&T agreements with South East Asian countries. In this paper, the collaboration is presented through the analysis of co-authored research papers published during the period 1996 to 2000 in the journals covered by the Science Citation Index. The study covers the nature and the areas of S&T collaborations, institutions involved, and the impact of these collaborations on their individual fields. It is revealed that a total of 329 co-authored papers were published during the period. Out of these, 214 were published through bilateral and 115 through multilateral efforts. The priority areas vary with the nature of collaboration as well as with the collaborating country. The institutions involved in these collaborations are also indicated. The research papers analyzed reflect the present status of India’s collaboration in S&T with the South East Asian countries. Such a study will help decision-makers to identify the potential S&T areas for future international cooperation

    A bibliometric analysis of malaria research in India during 1998–2009

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    Objective: This study analyses the research output of India in malaria research in national and global context, asreflected in its publications output during 1998–2009.Methods: SCOPUS Citation database has been used to retrieve the publication data, which has been furtheranalysed on several parameters including its growth, rank and global publications share, citation impact, overallshare of international collaborative papers and share of major collaborative partners and patterns of researchcommunication in most productive journals. The publications output, impact and collaborative publication shareof India is also compared with South Africa, Brazil and China.Results: Indian scientists together have published 2786 papers in malaria research during 1998–2009 and registeredan average citation per paper of 3.49. The country ranks 4th among the top 20 most productive countries inmalaria research with its global publications share of 6.47% during 1998–2009.Conclusion: Quantum of Indian research output in malaria research is high but its citations per paper is lowcompared to select developing countries, which can be improved by investing more funds in international andnational collaborative research projects, as well as increasing the participation of researchers in such projects

    A scientometric research of high-cited publications in Obsessive-Compulsive Disorders during 2012-2021

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    Objective. To examine the bibliometric characteristics of high-cited publications (HCPs) on Obsessive-Compulsive Disorder (OCD). Design/Methodology/Approach. The Scopus database was searched to identify HCPs on OCD published from 2002 to 2021. Three-hundred and ninety-five (n=395) articles having at least 100 citations were included in the analysis. Quantitative and qualitative indicators were applied to measure and evaluate the research productivity and citation impact of authors from the most productive countries, organizations, and authors. The VOSviewer was used to visualize the collaborative interaction among the most productive countries, organizations, authors, and keywords. Results/Discussion. The 395 HCPs published on OCD during 2012-2021 were cited 75197 times. The authors from the United States (n = 216), United Kingdom (n = 59), Netherlands (n =37), and Canada (n=30) were the most productive. Clinical studies accounted for the largest publications share among publication types, followed by studies focusing on treatment, epidemiology, genetics, risk factors, pathophysiology, and complications. Among important keywords besides OCD, other most common keywords were anxiety (n=89), Cognitive Behavioural Therapy (n=87), Clomipramine (n=68), Fluoxetine (n=65), and Behavioural Therapy (n=53). The topmost productive organizations were the Harvard Medical School, USA (n=37), Massachusetts General Hospital, USA (n=36), Columbus University, USA (n-28), and New York State Psychiatric Institute, USA (n=27). The most productive authors were D. Mataix-Cols (Sweden)(n=21), followed by B.D. Greenberg (USA)(n=18), S.L. Rauch (USA)(n=17) and D.J. Stein (South Africa)(n=17). These 395 HCPs were published in 135 journals, with The American Journal of Psychiatry publishing many papers. Papers published in Neuroscience and Bio-Behavioral Reviews had the highest number of citations per paper (n=509.0). Conclusion. The present study suggests that most HCPs have emerged from the United States, are based on funded research, and have involved authors from more than one country. Originality/Value. This study presents significant results, in a more comprehensive manner, related to the high-cited publications (HCPs) on Obsessive-Compulsive Disorder (OCD)

    Changing Bases: Multistage Optimization for Matroids and Matchings

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    This paper is motivated by the fact that many systems need to be maintained continually while the underlying costs change over time. The challenge is to continually maintain near-optimal solutions to the underlying optimization problems, without creating too much churn in the solution itself. We model this as a multistage combinatorial optimization problem where the input is a sequence of cost functions (one for each time step); while we can change the solution from step to step, we incur an additional cost for every such change. We study the multistage matroid maintenance problem, where we need to maintain a base of a matroid in each time step under the changing cost functions and acquisition costs for adding new elements. The online version of this problem generalizes online paging. E.g., given a graph, we need to maintain a spanning tree TtT_t at each step: we pay ct(Tt)c_t(T_t) for the cost of the tree at time tt, and also TtTt1| T_t\setminus T_{t-1} | for the number of edges changed at this step. Our main result is an O(logmlogr)O(\log m \log r)-approximation, where mm is the number of elements/edges and rr is the rank of the matroid. We also give an O(logm)O(\log m) approximation for the offline version of the problem. These bounds hold when the acquisition costs are non-uniform, in which caseboth these results are the best possible unless P=NP. We also study the perfect matching version of the problem, where we must maintain a perfect matching at each step under changing cost functions and costs for adding new elements. Surprisingly, the hardness drastically increases: for any constant ϵ>0\epsilon>0, there is no O(n1ϵ)O(n^{1-\epsilon})-approximation to the multistage matching maintenance problem, even in the offline case

    Quantum Gravitational Corrections to the Nonrelativistic Scattering Potential of Two Masses

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    We treat general relativity as an effective field theory, obtaining the full nonanalytic component of the scattering matrix potential to one-loop order. The lowest order vertex rules for the resulting effective field theory are presented and the one-loop diagrams which yield the leading nonrelativistic post-Newtonian and quantum corrections to the gravitational scattering amplitude to second order in G are calculated in detail. The Fourier transformed amplitudes yield a nonrelativistic potential and our result is discussed in relation to previous calculations. The definition of a potential is discussed as well and we show how the ambiguity of the potential under coordinate changes is resolved.Comment: 27 pages, 17 figure

    Iron Deficiency Anemia: A Scientometric Analysis of Indian Research Output during 2006-15

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    The study examines the Indian research output consisting of 717 publications on “iron deficiency anemia” as covered in Scopus database during 2006-15. Different parameters including publication growth, citation impact, share of international collaborative papers and identification of major international collaborative partners, global rank and share of India amongst the top 20 most productive countries, productivity and citation impact of leading Indian institutes and authors, medium of communication in most productive journals. The Indian publications output in the iron deficiency anemia research consisted of 717 articles during 2006-15 and witnessed an annual average growth rate of 18.77%. The average citation impact per article registered by the Indian publications for iron deficiency anemia research was 6.45 during 2006-15 which decreased from 10.63 during 2006-10 to 4.46 during 2011-15. The international collaborative share of India in the iron deficiency anemia research was 12.27% during 2006-15 which decreased from 12.99% during 2006-10 to 11.93% during 2011-15

    Global Publications Output in Quantum Computing Research: A Scientometric Assessment during 2007-16

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    The paper maps quantum computing research on various publication and citation indicators, using data from Scopus database covering 10-year period 2007-16. Quantum computing research cumulated 4703 publications in 10 years, registered a slow 3.39% growth per annum, and averaged 14.30 citations per paper during the period. Top 10 countries dominate the field with 93.15% global publications share. The USA accounted for the highest 29.98% during the period. Australia tops in relative citation index (2.0).  International collaboration has been a major driver of research in the subject; 14.10% to 62.64% of national level output of top 10 countries appeared as international collaborative publications. Computer Science is one of the most popular areas of research in quantum computing research. The study identifies top 30 most productive organizations and authors, top 20 journals reporting quantum computing research, and 124 highly cited papers with 100+ citations per paper
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