THE CIRCLE DIAGRAM

2018 ◽  
pp. 165-200
Keyword(s):  
Circle Diagram

Questions to the Article of research output and international cooperation among countries during the COVID-19 pandemic (Preprint)

2020 ◽  
Author(s):  
Shu-Chun Kuo ◽  
Tsair-Wei Chien ◽  
Willy Chou
Keyword(s):  
Citation Analysis ◽  
International Cooperation ◽  
Web Of Science ◽  
Research Output ◽  
Visual Representations ◽  
Scientometric Analysis ◽  
Medical Subject Headings ◽  
Pubmed Central ◽  
The Us ◽  
Circle Diagram

UNSTRUCTURED We read with great interest the study by Grammes et al. on research output and international cooperation among countries during the COVID-19 pandemic. The paper is a quantitative study using scientometric analysis instead of a qualitative research using citation analysis. A total of 7,185 publications were extracted from Web of Science Core Collection (WoS) with keywords of “covid19 OR covid-19 OR sarscov2 OR sars-cov-2” as of July 4, 2020. We replicated a citation analysis study to extract abstracts from Pubmed Central(PMC) with similar keywords mentioned above and obtained 35,421 articles relevant to COVID-10 matching their corresponding number of citation in PMC. one hundred top-cited atricles were selected and compared on diagrams. Social network analysis combined with citation numbers in articles was performed to analyze international cooperation among countries. The results were shown on a world map instead of the circle diagram in the previous study. A Sankey diagram was applied to highlight entities(e.g., countries, article types, medical subject headings, and journals) with the most citations. Authors from Chian dominated citations in these 100 top-cited articles rather than the US in publications addressed in the previous study. Both visual representations of the world map and Sankey diagram were provided to readers with a better understanding of the research output and international cooperation among countries during the COVID-19 pandemic

Power Limits in Stepping and other Small Brushless Motors — A Simple Approach Using the Blondel Circle Diagram

1988 ◽  
Vol 25 (3) ◽  
pp. 251-264
Author(s):  
A. Hughes ◽  
D. W. J. Pulle
Keyword(s):  
Steady State ◽  
Simple Approach ◽  
Brushless Motors ◽  
Undergraduate Level ◽  
State Behaviour ◽  
Power Limits ◽  
Circle Diagram ◽  
Steady State Behaviour

Brushless drives are important, but are often thought to be difficult to treat quantitatively at the undergraduate level. The Blondel circle diagram is shown to be ideal for illuminating the steady-state behaviour and limitations of small brushless system, at a level suitable for undergraduate courses.

Power Fluidics—Amplifying Properties of Specially Designed Junctions

1977 ◽  
Vol 10 (4) ◽  
pp. 147-154 ◽  
Author(s):  
J. R. Tippetts
Keyword(s):  
Equivalent Circuit ◽  
Reverse Flow ◽  
Signal Power ◽  
Impedance Matrix ◽  
Power Gain ◽  
Large Signal ◽  
Circle Diagram ◽  
Flow Diverters

Specially designed 3-terminal elements called flow-junctions (FJs) and ‘reverse flow diverters' (RFDs) are shown to have useful amplifying properties which are often unrecognised. These are described by relating the devices to ideal network elements using an indefinite circle diagram. The FJ is useful between two transformer-like states and at the mid-point of this range its utility is described by its impedance matrix. A circuit using an RFD is shown to give a large-signal power gain which compares favourably with an equivalent circuit using a vortex device.

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