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Education and self-improvement are key features of human behavior. However, learning in the physical world is not always desirable or achievable. That is how simulators came to be. There are domains where purely virtual simulators can be created in contrast to physical ones. In this research we present a novel environment for learning, using a natural user interface. We, humans, are not designed to...
The author analyzes the images of Paisii Hilendarski, printed on Bulgarian postage stamps. It is shown that in Bulgaria for a period of 92 years (1920–2012) a total of 10 postage stamps have been validated. They reflect the memory of the Bulgarians: both for Paisii and for Slavo-Bulgarian History. It is suggested that every Bulgarian cultural and historical age imposes its own rules on how to display...
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