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The rapid development of information technology and telecommunications has radically changed the two most important social processes: access to information and communication, allowing the globalization of the economy, culture, education and other areas of society. Priority, undoubtedly, is education, which determines the pace of development in particular countries and the quality of life of individuals...
The article describes courses organized for foresters in Poland in 1918−1939. It demonstrates the importance of such trainings as a supplementary education of forest rangers, timber sorters and resin extractors.
Gallium nitride (GaN) is very attractive semiconductor material because of its unique properties. The serious matter is a lack of easy access to bulk crystals of GaN. Synthesized crystals are precious and rather small. For these reasons almost all device manufacturers and researchers apply alternative substrates for gallium nitride devices epitaxy and it causes that the technology is intricate. Alternative...
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