New Releases by J. Graham

Mathematicians have known the theory of mathematical transformations for several centuries. Electrical engineers and other related performers have applied versions of this theory extensively. Numerical analysts who want to know the truth about numerical smoothing find it necessary to get involved in mathematical transformations. Numerical smoothing weights and other weight functions that manipulate numerical data are now being derived through the use of mathematical transformations. In this paper Fourier transformations are used to derive and analyze sets of numerical smoothing weights.

The major study in this investigation was one of growth and form, carried out to evaluate differences in growth rates and body proportions between landlocked Lake Ontario and the anadromous Atlantic alewives. Particular attention was also given to the nature of the annual mortality that is characteristic of P. pseudoharengus in Lake Ontario.

The effects of variation of trailing-edge angle and trailing-edge thickness on the lift characteristics of a 10-percent-chord thick symmetrical NACA airfoil section with a 25-percent-chord plain flap are appraised from wind-tunnel tests at Mach numbers from 0.3 to 0.9 and Reynolds numbers varying correspondingly from 1 to 2 million. The airfoil trailing-edge angle was varied from approximately 18 to 6 degrees, and the trailing-edge thickness from zero to the thickness at the flap hinge line.