scholarly journals Re-appraisal and extension of the Gratton-Vargas two-dimensional analytical snowplow model of plasma focus evolution in the context of contemporary research

2013 ◽  
Vol 20 (11) ◽  
pp. 112501 ◽  
Author(s):  
S. K. H. Auluck
Keyword(s):  
Plasma Focus ◽  
Two Dimensional ◽  
Contemporary Research

Two-dimensional magnetohydrodynamic calculations of the plasma focus

1978 ◽  
Vol 21 (10) ◽  
pp. 1856 ◽  
Author(s):  
Stephen Maxon ◽  
James Eddleman
Keyword(s):  
Plasma Focus ◽  
Two Dimensional

scholarly journals Constructing a Concept of Number

2021 ◽  
Author(s):  
Karenleigh A. Overmann
Keyword(s):  
Numerical Cognition ◽  
Explanatory Power ◽  
Two Dimensional ◽  
Multiple Forms ◽  
Distributed Objects ◽  
Content Structure ◽  
Contemporary Research ◽  
Number Systems ◽  
And Behaviors

Numbers are concepts whose content, structure, and organization are influenced by the material forms used to represent and manipulate them. Indeed, as argued here, it is the inclusion of multiple forms (distributed objects, fingers, single- and two-dimensional forms like pebbles and abaci, and written notations) that is the mechanism of numerical elaboration. Further, variety in employed forms explains at least part of the synchronic and diachronic variability that exists between and within cultural number systems. Material forms also impart characteristics like linearity that may persist in the form of knowledge and behaviors, ultimately yielding numerical concepts that are irreducible to and functionally independent of any particular form. Material devices used to represent and manipulate numbers also interact with language in ways that reinforce or contrast different aspects of numerical cognition. Not only does this interaction potentially explain some of the unique aspects of numerical language, it suggests that the two are complementary but ultimately distinct means of accessing numerical intuitions and insights. The potential inclusion of materiality in contemporary research in numerical cognition is advocated, both for its explanatory power, as well as its influence on psychological, behavioral, and linguistic aspects of numerical cognition.

scholarly journals Constructing a concept of number

2018 ◽  
Vol 4 (2) ◽  
pp. 464-493 ◽  
Author(s):  
Karenleigh A. Overmann
Keyword(s):  
Numerical Cognition ◽  
Explanatory Power ◽  
Two Dimensional ◽  
Multiple Forms ◽  
Distributed Objects ◽  
Content Structure ◽  
Contemporary Research ◽  
Number Systems ◽  
And Behaviors

Numbers are concepts whose content, structure, and organization are influenced by the material forms used to represent and manipulate them. Indeed, as argued here, it is the inclusion of multiple forms (distributed objects, fingers, single- and two-dimensional forms like pebbles and abaci, and written notations) that is the mechanism of numerical elaboration. Further, variety in employed forms explains at least part of the synchronic and diachronic variability that exists between and within cultural number systems. Material forms also impart characteristics like linearity that may persist in the form of knowledge and behaviors, ultimately yielding numerical concepts that are irreducible to and functionally independent of any particular form. Material devices used to represent and manipulate numbers also interact with language in ways that reinforce or contrast different aspects of numerical cognition. Not only does this interaction potentially explain some of the unique aspects of numerical language, it suggests that the two are complementary but ultimately distinct means of accessing numerical intuitions and insights. The potential inclusion of materiality in contemporary research in numerical cognition is advocated, both for its explanatory power, as well as its influence on psychological, behavioral, and linguistic aspects of numerical cognition.

Spectrophotometric measurements of objective-prism spectra

1966 ◽  
Vol 24 ◽  
pp. 118-119
Author(s):  
Th. Schmidt-Kaler
Keyword(s):  
Progress Report ◽  
Two Dimensional ◽  
Objective Prism ◽  
Made In

I should like to give you a very condensed progress report on some spectrophotometric measurements of objective-prism spectra made in collaboration with H. Leicher at Bonn. The procedure used is almost completely automatic. The measurements are made with the help of a semi-automatic fully digitized registering microphotometer constructed by Hög-Hamburg. The reductions are carried out with the aid of a number of interconnected programmes written for the computer IBM 7090, beginning with the output of the photometer in the form of punched cards and ending with the printing-out of the final two-dimensional classifications.

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