A CORRELATION COMPARISON ANALYSIS OF TOP ARTICLES IN LIBRARY AND INFORMATION SCIENCE USING CITATION AND ALTMETRIC ATTENTION SCORES

The paper is a comparative analysis of the papers published in library and information science journals. Correlation comparison between the traditional citations v/s modern score is derived through altmetrics score. Aspects compared are social media attention; and correlation comparison of citation and altmetric attention scores. Top 10 LIS journals with the highest Google scholar metrics in terms of h5-index were selected for the study on the basis of highly cited articles, altmetrics attention score, country-wise twitting etc. Top ranking one got the highest citations and AAS with 1528 and 1972 respectively and also got highest online attentions from Mendeley with 1930 readers and featured in 31 tweets. USA topped the list in the tweeting high ranking articles with 73, and UK second with 51. The results found that a significant difference with a negative correlation at r (9) =-.106, p=.770. The study opines that Indian scholars need to use social media sites to enable the scholarly literature to reach the wider audience

Accelerated Modeling of Near and Far-Field Diffraction for Coronagraphic Optical Systems

Accurately predicting the performance of coronagraphs and tolerancing optical surfaces for high-contrast imaging requires a detailed accounting of diffraction effects. Unlike simple Fraunhofer diffraction modeling, near and far-field diffraction effects, such as the Talbot effect, are captured by plane-to-plane propagation using Fresnel and angular spectrum propagation. This approach requires a sequence of computationally intensive Fourier transforms and quadratic phase functions, which limit the design and aberration sensitivity parameter space which can be explored at high-fidelity in the course of coronagraph design. This study presents the results of optimizing the multi-surface propagation module of the open source Physical Optics Propagation in PYthon (POPPY) package. This optimization was performed by implementing and benchmarking Fourier transforms and array operations on graphics processing units, as well as optimizing multithreaded numerical calculations using the NumExpr python library where appropriate, to speed the end-to-end simulation of observatory and coronagraph optical systems. Using realistic systems, this study demonstrates a greater than five-fold decrease in wall-clock runtime over POPPY's previous implementation and describes opportunities for further improvements in diffraction modeling performance.Comment: Presented at SPIE ASTI 2018, Austin Texas. 11 pages, 6 figure

Spartan Daily, March 1, 1948

Volume 36, Issue 94https://scholarworks.sjsu.edu/spartandaily/11054/thumbnail.jp

Spartan Daily, March 1, 1948

Volume 36, Issue 94https://scholarworks.sjsu.edu/spartandaily/11054/thumbnail.jp

Co-saved, co-tweeted, and co-cited networks

This is an accepted manuscript of an article published by Wiley-Blackwell in Journal of the Association for Information Science and Technology on 14/05/2018, available online: https://doi.org/10.1002/asi.24028 The accepted version of the publication may differ from the final published version.Counts of tweets and Mendeley user libraries have been proposed as altmetric alternatives to citation counts for the impact assessment of articles. Although both have been investigated to discover whether they correlate with article citations, it is not known whether users tend to tweet or save (in Mendeley) the same kinds of articles that they cite. In response, this article compares pairs of articles that are tweeted, saved to a Mendeley library, or cited by the same user, but possibly a different user for each source. The study analyzes 1,131,318 articles published in 2012, with minimum tweeted (10), saved to Mendeley (100), and cited (10) thresholds. The results show surprisingly minor overall overlaps between the three phenomena. The importance of journals for Twitter and the presence of many bots at different levels of activity suggest that this site has little value for impact altmetrics. The moderate differences between patterns of saving and citation suggest that Mendeley can be used for some types of impact assessments, but sensitivity is needed for underlying differences

Bee Gee News July 1, 1936

The BGSU campus student newspaper July 1, 1936. Volume 20 - Issue 39https://scholarworks.bgsu.edu/bg-news/1342/thumbnail.jp