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"spearheads" - 2 õppematerjali

Uluru
2
doc

Uluru

Fauna and flora Historically, 46 species of native mammals are known to have been living in the Uluru region; according to recent surveys there are currently 21. The park has a very rich reptile fauna,about 73 species have been recorded. Uluru - Kata Tjuta National Park flora represents a large portion of plants found in Central Australia. There are several rare and endangered species in the park. Trees such as the Mulga and Cenralian Bloodwood are used to make tools such as spearheads, boomerangs and bowls. The red sap of the bloodwood is used as a disinfectant and an inhalant for coughs and colds. Climate and seasons The park receives an average rainfall of 307.7 mm per year, and average temperatures are 37.8 °C in the summer and 4.7 °C in the winter. Temperature extremes in the park have been recorded at 45 °C during the summer and -5 °C during winter nights. Local Aboriginal people recognise five seasons: 1. Piriyakutu (August/September) - Animals breed and

Geograafia → Inglisekeelne geograafia
5 allalaadimist
TheCodeBreakers
946
pdf

TheCodeBreakers

the two most noteworthy cryptologic developments of the war. One was internal, in which the changes were so great as to be qualitative: the evolution in the operations of cryptography and the techniques of cryptanalysis, and one external: the elevation of cryptanalysis from just one among many sources of intelligence to the principal one. All this resulted, of course, from the immense increase in the use of radio. Blitzkrieg required the closest coordination between motorized spearheads, air support, and consolidating infantry. Global conflict demanded global communications. Unprecedented volumes of traffic streamed through radio channels. To handle it, huge agencies sprang into being. In World War I, the U.S. Army and Navy had about 400 persons in cryptology (excluding cipher clerks), or about one person in every 10,000 under arms. In World War II, there were 16,000 in cryptology—40 times as many —and the ratio was one person in every 800. In World War I, a

Informaatika → krüptograafia
15 allalaadimist


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