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In celestial mechanics, the Stumpff functions , were developed by Karl Stumpff for analyzing trajectories and orbits using the universal variable formulation. [1] [2] [3] They are defined by the alternating series:
H s is the design significant wave height at the toe of the structure (m) Δ is the dimensionless relative buoyant density of rock, i.e. (ρ r / ρ w - 1) = around 1.58 for granite in sea water; ρ r and ρ w are the densities of rock and (sea)water (kg/m 3) D n50 is the nominal median diameter of armor blocks = (W 50 /ρ r) 1/3 (m)
William Eugene Stumpf (March 1, 1936 – August 30, 2006) was an American furniture designer who helped design the Aeron, Embody and Ergon chairs for Herman Miller.. It was at the University of Wisconsin-Madison where Stumpf, working with specialists in orthopedic and vascular medicine, conducted extensive research into ergonomics, specifically in the way people sit.
Nevil Shute Norway (17 January 1899 – 12 January 1960) was an English novelist and aeronautical engineer who spent his later years in Australia. He used his full name in his engineering career and Nevil Shute as his pen name to protect his engineering career from inferences by his employers (Vickers) or from fellow engineers that he was "not a serious person" [1] or from potentially adverse ...
The calculations involve some basic trigonometry but these calculations can easily be done on any inexpensive scientific calculator. Sine height measurement. Situations where the top of the tree being measured is above eye level and the base of the tree being measured is below eye level is the most common situation encountered in the field.
The stump is the base of the trunk and the attached woody roots. Tree stumps and roots are extracted using a hydraulic head on a tracked excavator or with a mechanical head equipped by a special tool for tractors. Stump harvesting is expected to provide an increasing component of the woody material required by the woody biomass power sector in ...
In the southern hemisphere, so-called giant discs are a specialised kind of disc harrows that can stand in for a plough in rough country where a mouldboard plough cannot handle tree stumps and rocks, and a disc-plough is too slow (because of its limited number of discs). Giant scalloped-edged discs operate in a set, or frame, that is often ...
A decision stump is a machine learning model consisting of a one-level decision tree. [1] That is, it is a decision tree with one internal node (the root) which is immediately connected to the terminal nodes (its leaves). A decision stump makes a prediction based on the value of just a single input feature. Sometimes they are also called 1 ...