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Library & information science

Research Cited Together Is Close: Co-citation Analysis

Co-citation analysis judges two documents to be closer in subject the more often other documents cite them together. Learn how it emerged, how co-citation strength is counted, how

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Library & information science

Catalog Concepts and Structure for Library MARC Work

This time, we will examine catalogs, one of the concepts frequently used in libraries. Catalogs are intended to ensure that the same book can be registered according to the same s

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Physics

Proof That the Earth Turns: The Foucault Pendulum

The Foucault Pendulum is a device that shows the Earth's rotation with your own eyes: a heavy bob on a very long wire whose plane of swing slowly turns relative to the ground. We l