ï¼For a roughness profileï¼. This expresses the biquadratic mean of Z(x) in a sampling length rendered dimensionless as the biquadratic of the root mean squared height Rq. This means the kurtosis which is a yardstick for the sharpness of a surface, and expresses the pointing (sharpness) of the height distribution.
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The African National Congress (ANC) is the Republic of South Africa's governing social democratic political party.It has been the ruling party of post-apartheid South Africa on the national level since 1994, including the election of Nelson Mandela as president from 1994-1999.In the 2004 general election the ANC won 69.7% of the votes, in the 2009 general election it won 65.9% of the votes, and in 2014 it won 62.15% of the votes.he African National Congress (ANC) is the Republic of South Africa's governing social democratic political party.