Topic
Representation (systemics)
About: Representation (systemics) is a research topic. Over the lifetime, 33821 publications have been published within this topic receiving 475461 citations.
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TL;DR: On etudie systematiquement les Z-formes des representations rationnelles du groupe lineaire generale as discussed by the authors, a group of companies based in France.
91 citations
Patent•
06 Jan 1999TL;DR: In this article, an original image is sharpened by obtaining a first frequency-domain representation of the original image, selecting one or more elements from this first representation based on one more criteria such as element magnitude and frequency, scaling the selected elements according to one or multiple scale factors, and combining the scaled selected elements with the unselected elements of the first representation.
Abstract: An original image is sharpened by obtaining a first frequency-domain representation of the original image, selecting one or more elements from this first representation based on one more criteria such as element magnitude and frequency, scaling the selected elements according to one or more scale factors, and forming a second frequency-domain representation by combining the scaled selected elements with the unselected elements of the first representation. A sharpened reproduction of the original image may be generated by applying an inverse transform to the second frequency-domain representation. A technique for deriving the value of the one or more scale factors is also discussed.
91 citations
01 Jan 2009
TL;DR: The chapter argues that this approach to learning design, which centres on the concept of mediating artefacts and their role in the design process, can be used as a descriptive framework for describing the dynamics, processes, and different aspects involved in learning design.
Abstract: ion Learning activity Pattern Iconic representation Model Case study Vocabs Mediating artefacts
91 citations